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Ngoua, Ella Cyrrus. "Connaissances mobilisées par les élèves du secondaire dans le domaine des fonctions, approche comparative entre la France et l'Afrique francophone". Electronic Thesis or Diss., Bourgogne Franche-Comté, 2023. http://www.theses.fr/2023UBFCD066.
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Cette thèse en mathématiques porte sur la notion de fonction. En effet, nous nous intéressons aux connaissances mobilisées, savoirs utilisés, par les élèves du secondaire, en France et en Afrique francophone, devant des tâches liées aux fonctions selon trois points de vue : didactique, épistémologique et cognitif. Dans une première partie, la thèse étudie la façon dont les fonctions nous sont données à travers L'histoire de ce concept en s’appuyant sur l’article The Concept of Function up to the Middle of the 19th Century du professeur A.P YOUSCHKEVITCH.La logique mathématique moderne a découvert des difficultés pour une définition universelle, non-algorithmique, d'une fonction.Dans une seconde partie, nous nous posons la question de savoir ce que savent faire les élèves avec les fonctions ? Pourquoi cette question ? En effet, la notion de fonction occupe une place importante dans les programmes scolaires ainsi que dans chacune des épreuves de mathématiques surtout au baccalauréat En notre qualité d’enseignant, nous avons voulu comprendre ce qui peut expliquer l’échec des élèves à l’épreuve de mathématiques au secondaire. Afin de mieux cerner ce qui peut expliquer les phénomènes observés chez les élèves du secondaire lors de la résolution des tâches liées à la notion de fonction, nous avons décidé de partir d'un corpus construit selon la formulation d'Elena Tognini-Bonelli. De l’analyse de ce corpus de tâches et d’activités élèves côté élèves, côté enseignants et côté institution, il en ressort que : la définition de la notion de fonction n'est pas assimilée par les élèves du secondaire ; ils sont arrivés à un niveau algorithme de l'utilisation des fonctions ; L'entrée par les tâches est mieux indiquée pour enseigner les fonctions ; la conformité de voir f ou f(x) dans un tableau, etc. Nous avons en amont rappelé les résultats des travaux antérieurs au notre en rapport avec l’enseignement de la notion de fonctionThis thesis in mathematics deals with the notion of function. Indeed, we are interested in the knowledge mobilized, knowledge used, by secondary school students, in France and in French-speaking Africa, in front of tasks related to functions according to three points of view: didactic, epistemological and cognitive. In the first part, the thesis studies the way functions are given to us through The history of this concept based on the article The Concept of Function up to the Middle of the 19th Century by Professor A.P YOUSCHKEVITCH:logic modern mathematics has discovered difficulties for a universal, non-algorithmic definition of a function. In a second part, we ask ourselves the question of what can students do with functions? Why this question ? Indeed, the concept of function occupies an important place in the school programs as well as in each of the mathematics tests, especially in the baccalaureate. In our capacity as teachers, we wanted to understand what can explain the failure of students in the mathematics test in secondary school. In order to better understand what can explain the phenomena observed in secondary school students when solving tasks related to the notion of function, we decided to start from a corpus built according to the formulation of Elena Tognini-Bonelli. From the analysis of this corpus of student tasks and activities on the student side, on the teacher side and on the institution side, it emerges that: the definition of the concept of function is not assimilated by secondary school students; they have arrived at an algorithmic level of the use of functions; Entry by tasks is best suited for teaching functions; the conformity of seeing f or f(x) in a table, etc. We have recalled beforehand the results of work prior to ours in relation to the teaching of the notion of function
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Casanueva, Antonio. "Management control systems and their use in aligning managerial values : the case of a Mexican microfinance bank". Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/97360/.
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Management control (MC) is a behavioural issue. Senior managers seek to align managerial endeavours with the organisation’s objectives. Traditionally, alignment has focused on seeking to ensure that managers support organisational aims by motivating, rewarding, and even monitoring, the achievement of assigned targets. MC was originally mainly about financial targets, before broadening to include nonfinancial performance measures. However, there is evidence to suggest that organisations may also seek to align managerial “values” with those of the organisation. Organisational attempts to influence managerial mindsets through the MC process raise non-trivial questions regarding the procedures and systems involved, the reasons for apparently expanding into attempts to influence thinking, and the possible consequences of such attempts. These questions form the basis of the present study. This thesis reports on a case study of Compartamos Bank, a Mexican organisation with a religious ethos, selected through theoretical sampling. Compartamos claims to have the “person” at the centre of its philosophy. The thesis contributes to the MC literature by broadening the scope of value systems. The findings suggest that value systems are not just a means of boosting performance and accomplishing organisational aims; they may also be used to foster managers’ development on various personal dimensions. Evidence from the case study suggests that frequent reinforcement of the organisation’s philosophy through its value system, along with a boundary system, may enhance “value congruence”. However, using these MC mechanisms may also cause various unintended side-effects. In detailing the implementation process of a value system, the study fills a gap identified in the MC literature regarding whether and, if so, why organisations may implement “softer” approaches involving the encouragement of shared values, and what may be the possible consequences of doing so.
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Guidi, Manuel. "Analisi e ottimizzazione delle prestazioni e dell'affidabilità di una macchina per il packaging di prodotti igienico-sanitari". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/9760/.
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L’oggetto di studio di questo lavoro, svolto presso l’azienda Vire Automation del gruppo Bucci Industries di Faenza, è una macchina per il packaging di prodotti igienico-sanitari, più precisamente pannolini baby. Dopo una prima indagine di mercato svolta con l’aiuto dei commerciali dell’azienda, si sono ipotizzate una serie di soluzioni tecniche per migliorare il funzionamento e le prestazioni della macchina. Tramite uno strumento detto Casa della qualità si sono evidenziate le soluzioni tecniche che risultano più apprezzate dal mercato e per questo posseggono una maggior priorità di realizzazione. Si è intervenuti su di un gruppo funzionale per lo spostamento orizzontale del prodotto che agisce superiormente rispetto al pianale di processo e sul trasporto pioli che invece agisce per ostacolo tra cilindri di acciaio ed i prodotti. In particolare per il primo si è realizzato un apposito studio delle grandezze cinematiche in gioco e, dopo una progettazione 3D, si sono stimate le coppie motrici richieste dal nuovo asse che è risultato vantaggioso rispetto al precedente. Per il secondo invece, vista l’esigenza di ottenere un gruppo rifasatore che permettesse alla macchina di funzionare correttamente nonostante i ritardi di arrivo dei prodotti dalla linea di produzione, si è realizzata una nuova gestione logica del gruppo per sopperire alla peggior condizione di funzionamento verificabile e si è riprogettato il gruppo per dotarlo delle nuove necessarie caratteristiche.
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Barton, Barry Anthony. "Effectiveness and cost-effectiveness of pre-registration nursing and physiotherapy education in an education consortium in England". Thesis, University of York, 2002. http://etheses.whiterose.ac.uk/9760/.
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Adams, Luke Richard. "The polymerization of lactic acid anhydrosulphite by anionic initiators". Thesis, Aston University, 1994. http://publications.aston.ac.uk/9760/.
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This thesis is primarily concerned with the synthesis and polymerization of 5-methyl-1;3, 2-dioxathiolan-4-one-2-oxide (lactic acid anhydrosulphite (LAAS)) using anionic initiators under various conditions. Poly(lactic acid) is a biodegradable polymer which finds many uses in biomedical applications such as drug-delivery and wound-support systems. For such applications it is desirable to produce polymers having predictable molecular weight distributions and crystallinity, The use of anionic initiators offers a potential route to the creation of living polymers. The synthesis of LAAS was achieved by means of an established route though the procedure was modified to some extent and a new method of purification of the monomer using copper oxides was introduced, Chromatographic purification methods were also examined but found to be ineffective. An unusual impurity was discovered in some syntheses and this was identified by means of 1H and 13C NMR, elemental analysis and GC-MS. Since poly-α-esters having hydroxyl-bearing substituents might be expected to have high equilibrium water contents and hence low surface tension characteristics which might aid bio-compatibility, synthesis of gluconic acid anhydrosulphite was also attempted and the product characterised by 1H and 13C NMR. The kinetics of the decomposition of lactic acid anhydrosulphite by lithium tert-butoxide in nitrobenzene has been examined by means of gas evolution measurements. The kinetics of the reaction with potassium tert-butoxide (and also sec-butyl lithium) in tetrahydrofuran has been studied using calorimetric techniques. LAAS was block co-polymerized with styrene and also with 1,3-butadiene in tetrahydrofuran (in the latter case a statistical co-polymer was also produced).
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Suenaga, Portuguès Kay. "Guerra i Pau a l'Edat Mitjana (la Corona d'Aragó en la Baixa Edat Mitjana)". Doctoral thesis, Universitat de les Illes Balears, 2012. http://hdl.handle.net/10803/97360.
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Quiroga, Quiroga Oscar Arnulfo. "Discovering frequent and significant episodes. Application to sequences of events recorded in power distribution networks". Doctoral thesis, Universitat de Girona, 2012. http://hdl.handle.net/10803/97160.
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This thesis proposes a formalism to analyse and automatically exploit sequences of events, which are related with faults occurred in power distribution networks and are recorded by power quality monitors at substations. This formalism allows to find dependencies or relationships among events, looking for meaningful patterns. Once those patterns are found, they can be used to better describe fault situations and their temporal evolution or can be also useful to predict future failures by recognising the events that match the early stages of a pattern.En aquesta tesi es proposa un formalisme per analitzar conjunts de dades d'esdeveniments relacionats amb les fallades que es produeixen en les xarxes de distribució elèctrica, i explotar automàticament seqüències d'esdeveniments registrats pels monitors de qualitat d'ona instal•lats en substacions. Aquest formalisme permet cercar dependencies o relacions entre esdeveniments per trobar patrons significatius. Quan els patrons es troben, es poden utilitzar per descriure millor les situacions de fallada i la seva evolució. Els patrons també poden ser útils per a predir fallades futures mitjançant el reconeixement dels successos que coincideixin amb les primeres etapes d'un patró.
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Silva, Neto Aurelio Moreira da [UNESP]. "Modelagem e simulação das juntas de um manipulador robótico cilíndrico". Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/97060.
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O estudo de um modelo matemático completo, incluindo os servos atuadores, a dinâmica do corpo rígido e o planejamento e geração de trajetórias do manipulador robótico cilíndrico, é um indispensável ponto de partida para aplicações de simulação das juntas e controle de movimentos. As equações cinemáticas obtidas pelas técnicas da Matriz de Transformação Homogênea e Matriz de Transformação Inversa são a solução para a geração de trajetórias, as quais podem ser feitas no espaço cartesiano ou no espaço das juntas e também possibilitam gerar o volume de trabalho do manipulador, que é de grande interesse para a especificação de determinada configuração em aplicações ou tarefas específicas. As equações de movimento foram derivadas usando a formulação Lagrangiana para predizer o comportamento do manipulador quanto à influência da geometria e os parâmetros de massa do manipulador.
The study of a complete mathematical model including the servos actuators, the dynamics of the body rigid and the planning and generation of the manipulator's cylindrical robotic trajectories is an indispensable starting point for applications of simulation of the joints and control of movements. The Kinematic equations obtained by the techniques Homogeneous Transformation Matrix and Inverse Transformation Matrix make is the solution for generation of trajectories that can be done in the cartesian space or in the space of the joints and they also make possible to generate the volume of the manipulator's work that is of great interest for specification certain configuration in applications or specific tasks. The movement equations were derived using the formulation Lagrangiana to predict the manipulator's behavior as for the influence of the geometry and the parameters of the manipulator's mass.
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Sartori, Juliana Elisa [UNESP]. "Avaliação da sensibilidade in vitro de isolados de Colletotrichum lindemuthianum a fungicidas". Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/97160.
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Colletotrichum lindemuthianum (Sacc. & Magn.) Scrib. e o agente causal da antracnose do feijoeiro (Phaseolus vulgaris L.), doenca fungica de grande importancia para a cultura, pois pode causar perdas de ate 100% na producao, quando sao utilizadas cultivares suscetiveis e sementes infectadas, sob condicoes ambientais favoraveis ao desenvolvimento de epidemias. O presente trabalho objetivou avaliar a sensibilidade in vitro de 20 isolados de Colletotrichum lindemuthianum, provenientes de diferentes regioes do pais, a cinco fungicidas de diferentes principios ativos e algumas misturas (carbendazin, chlorothalonil, tiofanato metilico, chlorothalonil + tiofanato metilico, trifloxystrobin, propiconazol, trifloxystrobin + propiconazol), em cinco diferentes concentracoes (0, 1, 10, 100 e 1000 -Êg.mL-1) adicionados em meio de cultura batata-dextrose-agar (BDA). Os isolados cresceram por sete dias a 25 -C no meio de cultura BDA e apos esse periodo, discos de 0,5 cm de micelio do fungo, foram transferidos para placas de Petri com o meio BDA contendo as diferentes concentracoes de fungicidas. As placas foram incubadas por sete dias a 25 -C, avaliado o crescimento medio do diametro das colonias (em cm) e calculado os valores de porcentagem de inibicao do crescimento micelial dos isolados em relacao ao tratamento testemunha. Os resultados mostraram que para os fungicidas carbendazin e tiofanato metilico, 11 isolados fungicos foram totalmente ou parcialmente inibidos na concentracao de 1 ou 10 -Êg.mL-1. Chlorothalonil mostrou-se menos eficiente que os demais produtos pelo fato de inibir o crescimento micelial de apenas tres isolados na concentracao de 1000 -Êg.mL-1. A mistura de chlorothalonil e tiofanato metilico mostrou a inibicao total do crescimento micelial de quatro isolados a 1 -Êg.mL-1, e, a 1000 -Êg.mL-1, oito isolados mostraram-se sensiveis a mistura desses produtos...
Colletotrichum lindemuthianum (Sacc. & Magn.) Scrib. is the causal agent of anthracnose in bean (Phaseolus vulgaris L.). This fungal disease has great importance in the crop, since it may cause yield losses of up to 100% when susceptible cultivars and infected seeds are used under environmental conditions that favor the development of epidemics. The aim of this work was to evaluate the in vitro sensitivity of 20 isolates of Colletotrichum lindemuthianum from different regions of the country, to five fungicides with different active principles and some mixtures (carbendazim, chlorothalonil, methyl thyophanate, chlorothalonil + methyl thyophanate, trifloxystrobin, propiconazole, trifloxystrobin + propiconazole), at five different concentrations (0, 1, 10, 100, and 1000 ìg.mL-1), added to potato-dextrose-agar (PDA) culture medium. The isolates were cultured for seven days at 25 °C in PDA medium, after which 0.5 cm disks of fungal mycelium were transferred to Petri dishes containing PDA medium and the various concentrations of fungicides. The Petri dishes were incubated for seven days at 25 °C. We evaluated the mean growth in diameter of the colonies (in cm) and calculated percentage values for mycelial growth inhibition of the isolates in relation to the control treatment. The results showed that 11 fungal isolates were completely or partially inhibited by the fungicides carbendazim and methyl thyophanate at concentrations of 1 or 10 ìg.mL-1. Chlorothalonil proved less effective than the other products, as it inhibited mycelial growth in only three isolates, at the concentration of 1000 ìg.mL-1. The chlorothalonil and methyl thyophanate mixture showed complete mycelial growth inhibition in four isolates at 1 ìg.mL-1, while eight isolates were sensitive to the mixture of these products at 1000 ìg.mL-1. The propiconazole and trifloxystrobin mixture was the most effective and inhibited growth... (Complete abstract click electronic access below)
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Leitão-Lima, Patrícia da Silva [UNESP]. "Levantamento da entomofauna em sítios florestais em recuperação e em um fragmento de floresta natural em Botucatu, SP". Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/97260.
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leitaolima_psl_me_botfca.pdf: 278109 bytes, checksum: 27548222218389449ab80c8ec050f943 (MD5)O trabalho teve por objetivo avaliar a comunidade de insetos em três sítios degradados sob processo de recuperação (sítios 1, 2 e 3) e um fragmento de floresta nativa na região de Botucatu, SP. O levantamento das espécies de insetos foi realizado quinzenalmente no período de maio de 2000 a maio de 2001, utilizando-se uma armadilha luminosa por área estudada. As espécies de insetos coletadas com maior freqüência tiveram sua flutuação populacional representada graficamente e a caracterização da comunidade encontrada foi feita pelos seguintes índices faunísticos: freqüência, abundância, diversidade, equitatividade e similaridade para Lepidoptera, Coleoptera, Hemiptera-Heteroptera, Hymenoptera e demais ordens encontradas. Foi observada baixa densidade de indivíduos de insetos coletados no fragmento de mata em relação aos demais sítios. O sítio com menor desenvolvimento das árvores foi o que mais se distanciou em número de indivíduos do fragmento de mata. Foi coletado um total de 876 espécies e 15.332 indivíduos de insetos, sendo a ordem Lepidoptera responsável por 44,03% do total de indivíduos e de 80,25% das espécies coletadas, com maior número para as famílias Noctuidae e Arctiidae, principalmente nas áreas com recuperação mais lenta. As densidades de espécies de Geometridae e Saturniidae foram superiores no fragmento de mata. Pelo índice de diversidade de Shannon-Weaver foi verificada maior diversidade de lepidópteros no fragmento de mata e menor diversidade no sítio 2. O mesmo resultado foi verificado para Coleoptera e Hymenoptera. Hemiptera-Heteroptera e demais ordens de insetos apresentaram maior diversidade no fragmento de mata e o sítio 1 foi a área alterada com menor diversidade...
The work aimed to evaluate the insect community in three degraded sites under recovery process (sites 1, 2 and 3) and the native forest fragment in region of Botucatu, SP, Brazil The insects monitoring was accomplished bi-weekly during May, 2000 to May 2001, using a light trap for each studied area. The insect species collected with higher frequency had its populational dynamic represented graphically and community was characterizated using the following faunistic indexes: frequency, abundance, diversity, equitability and similarity for Lepidoptera, Coleoptera, Hemiptera-Heteroptera, Hymenoptera and other orders. It was observed individuals of insects with low density collected in the native fragment regarding the other sites. The sites with smaller development trees showed reduced number of individuals in comparision with native fragment. It was collected 876 species of insects and 15332 individuals, with order Lepidoptera representing 44,03% from the individuals total and of 80,25% of the collected species, with larger number for the families Noctuidae and Arctiidae, mostly in the areas with slower recovery. The species densities of Geometridae and Saturniidae were superior in native forest fragment. By the Shannon-Weaver diversity index was verified larger lepidopterous diversity in the native forest and smaller diversity in the site 2. The same result was verified for Coleoptera and Hymenoptera. Hemiptera-Heteroptera and insects of other orders presented larger diversity in the native forest fragment and the site 1 was the area changed with smaller diversity. The degraded sites in recovery process had very low similarity with the native forest fragment for Lepidoptera and for the other insect orders...(Complete abstract, click electronic access below)
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Martini, Ana Paula [UNESP]. "Influência da espessura da camada de cimento e da variação da temperatura no comportamento mecânico de fragmentos cerâmicos utilizados em restaurações estéticas". Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/97360.
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Introdução: Fragmentos cerâmicos têm sido utilizados como opção restauradora em dentes anteriores com necessidade de pequenas correções de contorno e forma. A espessura da camada de cimento resinoso e a variação da temperatura intra-bucal são fatores influentes no sucesso das restaurações cerâmicas convencionais como inlays, onlays, coroas e laminados. Entretanto, a literatura não apresenta dados sobre a influência destes dois fatores no comportamento mecânico do fragmento cerâmico que geralmente apresenta dimensões não uniformes, principalmente nos limites da restauração. Proposição: O objetivo do presente estudo é analisar, através do método dos elementos finitos tridimensional (EF 3-D), o comportamento da camada de cimento resinoso e da cerâmica, variando a espessura da camada de cimento e a temperatura intra-bucal. Materiais e Métodos: Após a obtenção do conjunto de imagens microtomográficas de um incisivo central maxilar, o modelo sólido do dente será elaborado no programa Mimics. A partir deste modelo inicial (M), 5 modelos serão elaborados no programa SolidWorks, simulando a restauração do ângulo disto-incisal com o uso de um fragmento cerâmico colado ao substrato dental, variando a espessura da camada de cimento resinoso: M1 – 0 μm de espessura; M2 – 50 μm em toda...
Introduction: Ceramics fragments have been used for dental/aesthetic restorative purposes in the anterior dentition. The cement layer thickness and temperature variation play an important role for the adequate biomechanical behavior of the ceramics in case of inlays, onlays, total crown and laminate veneers. However, those aspects has not been evaluated in case of ceramics fragments that usually shows non-uniform dimension and shape which might have negative influence in the behavior of dental ceramics fragments. Purpose: The aim of this study was evaluated by 3-D finite element analysis the mechanical behavior of the cement layer and ceramic fragment varying the cement layer thickness and the temperature. Materials and Methods: After obtaining the microtomography data set of a maxillary central incisor, the solid model was rebuild using Mimics program. The model was exported to the Solidworks program for the simulation of a defect at the distal/incisal edge. This defect was restored with a ceramic fragment bonded to the enamel surface. From this restored model (M), 5 different models were tested: M1 – cement layer (CL) showing 0 μm of thickness; M2 – CL with an uniform thickness of 50 μm; M3 – CL with 50 μm at the margin of ceramics and 100 μm in the inner area; M4 – CL with 50 μm at the margin of ceramics and 200 μm in the inner area; and M5 – CL with 100 μm at the margin of ceramics and 200 μm in the inner area. In all models, the environment temperature changed from 5ºC to 50ºC in 4 increments. The finite element (FE) mesh was refined drove by convergence of analysis. The numerical approach was performed using Ansys Workbench FE program. Results: The maximum principal stress... (Complete abstract click electronic access below)
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Cabral, Cibele Zanirato [UNESP]. "Descrição e análise das contingências presentes na proposta de Estatuto da Pessoa com Deficiência". Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/97460.
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cabral_cz_me_bauru.pdf: 488674 bytes, checksum: e5f84e3f76b69eaddb0b92b915b969e8 (MD5)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Políticas públicas têm estabelecido diretrizes para que seja garantida igualdade de oportunidade de acesso aos diversos ambientes a despeito diferenças presentes na população, visando a promoção de uma sociedade menos segregatória e mais inclusiva. Enquanto prática, para que a igualdade de acesso seja garantida, requer que o foco das ações seja deslocado da diferença individual para a adaptação do ambiente físico e social. A inclusão pode ser descrita enquanto um fenômeno social complexo, resultado de ações que são estabelecidas e mantidas por diferentes agências como governo, instituições formadoras de educadores, escolas, pessoas com necessidades educativas especiais, suas famílias e a mídia. Uma das ações que pode oferecer condições para que práticas inclusivas sejam apresentadas é o estabelecimento de leis. Leis, no âmbito deste trabalho, são compreendidas enquanto formulações verbais que descrevem comportamentos e que, para melhor compreensão e governo do comportamento dos indivíduos de um grupo deve especificar as ações a serem realizadas, sob quais circunstâncias e prever consequências para seu cumprimento ou não. Este trabalho teve como objetivo analisar o Projeto de Lei do Senado nº 6, de 2003, que Institui o Estatuto da Pessoa com Deficiência e dá outras providências, que está em processo de reformulação com possibilidades de votação ainda para o presente ano e identificar e descrever enunciados de contingências e caracterizá-las em relação à: presença dos termos em completas ou incompletas...
Public politics established lines to ensure the equality of access opportunity to several environments in spite of the population differences, aiming at promoting of a less segregated and more inclusive society. In practice, so that the equality of access be guaranteed, requires that the focus of the actions be dislocated from the individual difference to the physical and social environment adjustment. The inclusion can be described as a complex social phenomenon, a result of actions established and kept for different agencies such as the government, formative educators institutions, schools, people with educative special necessities, their families and the media. One of the actions which can provide conditions so that the inclusive practices be adopet is the establishment of laws. Laws, inside his project, are understoods as verbal formulations which describe behavior, and for a better understanding and the behavior contol of the individual from a group, must specify the actions to be done, under such circumstances and predict consequences for its accomplishment or not. This project had as objective to analyse The Senate Law Project nº 6, from 2003, which Institutes The Statute of the Person with Disability and provides other measures, which is in process of reformation with the possibility of being voted in the current year and identify and describe uncertain propositions and characterize them according to: a presence of the terms in complete and incomplete; at the presence of the orders of governmental consequences; whether... (Complete abstract click electronic access below)
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Ballalai, Rodrigo Clemente [UNESP]. "O jovem no movimento hip hop: espaço potencial de criatividade e identificação?" Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/97560.
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ballalai_rc_me_assis.pdf: 488510 bytes, checksum: 0f5cd2f861ddf680adab3dd5756129d7 (MD5)A partir de experiência de estágios da graduação em Psicologia, particularmente no trabalho desenvolvido junto ao “Programa de Liberdade Assistida” da FEBEM, unidade Bauru, quando oferecemos um pronto atendimento psicológico a seus participantes, iniciamos o contato com o movimento hip hop. Entrevistamos jovens que se identificam com o movimento hip hop, analisando sua trajetória ao ingressarem nos grupos organizados de hip hop do município de Bauru. Analisamos suas biografias e percepções que estes jovens têm de si e de sua realidade social. O instrumento utilizado foi a entrevista semi dirigida, cuja aplicação ocorreu individualmente O procedimento para a análise das informações se apoiou no método psicanalítico. Analisamos o que leva os jovens a participarem do referido movimento, por meio do conceito psicanalítico de identificação. Verificamos que a significação que os jovens atribuem ao hip hop pode ser entendido como um espaço potencial de criatividade, de acordo com a teoria do psicanalista inglês Donald Winnicott. Encontramos diferentes usos desse movimento cultural, de acordo com a singularidade de cada participante, inclusive manifestado pelos diversos meios de participação artística e ideológica de seus componentes. No campo identificatório consideramos o movimento hip hop como modelo identificatório contemporâneo e significativo para grande parcela da população jovem. Como apresenta Maria Rita Kehl, o tratamento de irmãos (“manos”) indica um campo de identificação horizontal com um grupo de pessoas iguais, oriundas de uma mesma realidade dolorosa; distinto de uma identificação vertical, tal como ocorre na grande massa em relação ao líder ou ídolo.
During the course of training in psychology, especially in a work with the Program of Freedom Febem Assisted in the unit of Bauru, offering psychological care ready to participants, initiated the contact with the hip hop movement. In this study, we analyzed the motivation of some young people to join this movement, to perform such analysis, we used the psychoanalytic concept of identification. We want to check the meaning given by these young people to the hip hop movement, and if this can be seen as a potential space for creativity. Young people interviewed are identified with the hip hop movement, and why we are looking at their life stories the moment they began to join the hip hop movement organized in the city of Bauru. I reviewed their biographies and their perceptions about themselves and about social reality in which they live. We conducted semi-directed interviews with each couple in particular. We use the psychoanalytic method to analyze the content of the interviews, especially the theory developed by psychoanalyst Donald Winnicot.
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Gomes, Roger Marcelo Martins [UNESP]. "Angústia e prazer nas relações de poder das organizações escolares". Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/97660.
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gomes_rmm_me_assis.pdf: 293612 bytes, checksum: 59ecf70dbd3c8c81fff536834e3bd4a6 (MD5)As organizações escolares de ensino privado, voltadas para educação de mercado, são responsáveis por uma relação paradoxal vivida por seus professores. Apesar da exploração, dominação e controle exercidos pela organização, que geram angústia e sofrimento, esses profissionais, enquanto indivíduos, manifestam uma relação prazerosa com o seu trabalho. Para investigarmos esta questão, buscamos definições teóricas de três categorias fundamentais: a organização como sistema de mediações, o poder como relação de forças e o indivíduo como sujeito sofrente. A partir dessas definições, buscamos analisar as formas de poder exercidas pelas organizações escolares sobre seus professores, a fim de demonstrar como se dá a construção da subjetividade destes indivíduos nessas relações. Utilizamos oito entrevistas semi-diretivas de professores de Ensino Médio de escola particular, adotando como técnica a entrevista psicológica para obtenção de dados e a abordagem sociomental de perspectiva dialética para análise de dados. A aplicação desta metodologia trouxe como resultado dois apontamentos marcantes das vidas dos entrevistados durante a formação escolar: a evocação e reedição do conflito angústia e prazer que será operado pela organização e a descoberta da afinidade com a área do conhecimento, que interferirá no percurso de sua vida. No trabalho, o professor se depara com o poder das organizações escolares que opera de duas formas: por mecanismos coercitivos, repressivos e castradores como o cumprimento rigoroso às regras e a ameaça de demissão e, por um sistema de mediação das contradições...
Private school institutions with a free market education perspective are responsible for a paradoxal relation experienced by their teachers. Despite the feeling of exploitation, control and domination present in the administration of this kind of school, which generate anguish and suffering, these professionals demonstrate a pleasurable relation with their working environment. In order to investigate this issue we select theoretical definitions for three fundamental categories: the organization as a system of mediations, the power relation perceptions and the individual as a suffering subject. Based on these definitions we tried to analyze the patterns of power exerted over the teachers by the school organizations and to demonstrate the subjectivity construction process of these individuals within this relation. We carried out eight semi directed interviews with secondary private school teachers, using as technique the psychological interviews for obtaining data and the sociomental approach of dialectical perspective for analyzing these data. The use of this methodology yielded two significant life dimensions of these interviewees during their school years formation: the evocation and reenactment of the aguish and pleasure conflict which will be operated by the organization and the discovering of affinity with an area of knowledge which will interfere in his/her course of life. In the working environment the teacher faces the power of the school organizations in two dimensions: on one hand, coercive, repressive and castrating mechanisms for a rigorous commitment to the rules and the threat of dismissal, on the other hand, a system for the mediation of these contradictions ...(Complete abstract, click electronic address below)
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Magalhães, Ticiane da Silva [UNESP]. "Estudo de pré-tratamentos de bagaço de cana para produção de etanol celulósico por hidrólise enzimática". Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/97760.
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magalhaes_ts_me_sjrp.pdf: 702611 bytes, checksum: 13fc3a06f187539258af5a2b0088eb89 (MD5)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Utilizando o bagaço de cana como matéria prima para a produção do etanol brasileiro pode-se aumentar a produção em 50% deste combustível sem o aumento de área cultivada com a cana de açúcar. A hidrólise química deste material demonstrou ser ineficiente à medida que gera um grande número de substâncias inibidoras do processo fermentativo alcoólico, como aldeídos furânicos e fenóis. A hidrólise enzimática vem se destacando como a forma mais viável de sacarificação do bagaço, em função de não gerar tais inibidores, mas a recalcitrância da fibra vegetal impede tal processo. A ação das enzimas hidrolíticas é muito dificultada pela forma como se encontra naturalmente a fibra vegetal: regiões de alta cristalinidade e a presença de lignina revestindo as fibras. O preparo do bagaço para a ação enzimática, normalmente denominado de pré-tratamento, utiliza condições extremas de temperatura e pressão que podem formar produtos tóxicos para a fermentação alcoólica e apresentam sérios riscos operacionais. O objetivo deste trabalho é avaliar o grau de desestruturação do bagaço após pré-tratamentos em soluções ácidas e alcalinas em glicerol e irradiadas com micro-ondas (MO) em dois modos: estático e rotativo. A melhor condição para a ação hidrolítica do complexo enzimático empregado foi obtida em meio não tamponado (água destilada) durante 24 horas. As maiores liberações de açúcares redutores totais (ART) após a hidrólise enzimática foram alcançadas quando o bagaço foi pré-tratado com irradiação de MO por dois minutos em modo rotativo em meio ácido (0,07 mol/L H2SO4) em 100% glicerol (617 ± 24 mg de ART/g de bagaço) e em meio alcalino (0,05 mol/L NaOH) em 100% glicerol...
The production of the Brazilian bioethanol can be increased in 50% without expanding the area cultivated with sugarcane by using sugarcane bagasse as raw material. Its recalcitrance is an obstacle to enzymatic hydrolysis, which can be overcome by physical-chemical treatments. Common pre-treatments using extreme conditions of temperature and pressure are dangerous, promote the generation of toxic compounds (phenols and aldehydes) besides being potentially inhibitory for yeast. The aim of this work is to assess the degree of disruption of the bagasse after pre-treatment in acidic and alkaline glycerol, irradiated with microwaves both in the static and rotational modes. The enzyme complex showed the best results with the reactions promoted in a non-buffered (distilled water) at 24 hours. The best results for the pre-treatment were found after inserting a rotation system in the microwave oven inasmuch as the samples were subjected to irradiation in a more homogeneous way. The best pre-treatment was obtained after enzymatic hydrolysis in sulfuric acid (0.07 mol/L), in pure glycerol, with the rotation of the balloon inside the microwave oven (617 ± 24 mg of ART/g bagasse). In alkaline medium, the best result was found in the absence of water in the reaction medium (0.05 mol/L NaOH) with the rotation of the balloon inside the microwave oven (601 ± 58 mg of ART/g of bagasse). Differential Scanning Calorimetry (DSC) allows to evaluate the degree of disruption of bagasse comparing the enthalpy change, which can be associated with disruption of bounds in pre-treated bagasse. Among the pre-treated bagasse, it is observed that the bagasse treated with NaOH 0.05 mol/L and 5% of water in glycerol had the lowest ΔH, suggesting greater breakdown of carbohydrates after pre-treatment
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Lemos, Sahra Cavalcante [UNESP]. "Desenvolvimento de metodologia alternativa limpa para análise de nitrito". Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/97860.
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lemos_sc_me_araiq.pdf: 395464 bytes, checksum: 23acac48929d9e7d20cb1a7e40d2a3ea (MD5)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O presente trabalho propõe um novo método para análise de nitrito em amostras de águas naturais e alimentos, por espectroscopia de reflectância difusa combinada com spot test. Neste método, a reação de interesse é procedida em papel de filtro, por meio da adição de 30 μL da solução do reagente cromogênico, seguida da adição de 30 μL da solução de analito. A intensidade da coloração do produto é medida por reflectância difusa, em 532 nm. O desenvolvimento do método passou por uma etapa de planejamento experimental, que permitiu encontrar as concentrações ótimas dos reagentes, para as quais a sensibilidade do método é maior (9,60 × 10-3 mol L-1 para o dicloridrato de naftiletilenodiamina e 5,90 × 10-2 mol L-1 para o ácido sulfanílico). O reagente cromogênico foi preparado misturando-se os dois compostos em uma mesma solução, juntamente com ácido clorídrico, na concentração de 6,00 x 10-2 mol L-1. Uma relação linear (r = 0,997) foi observada na faixa entre 2,90 × 10-4 e 1,74 × 10-3 mol L-1 de ânions nitrito, representando os valores de reflectância obtidos versus o logaritmo da concentração de nitrito. Com o objetivo de trabalhar com quantidades ainda menores do analito, as concentrações dos reagentes cromogênicos foram reduzidas pela metade, exceto a do ácido clorídrico, que permaneceu constante, e uma segunda curva analítica (r = 0,997) foi construída na faixa entre 7,17 x 10-6 e 4,35 x 10-4 mol L-1 de íons nitrito, representando-se graficamente os valores de reflectância obtidos versus a concentração de analito presente nas soluções. O produto colorido mostrou uma estabilidade óptica de pelo menos 50 minutos em atmosfera ambiente e de três dias, se mantido em dessecador com atmosfera de nitrogênio. O método apresentou bons valores de precisão intradia e interdia, com RSD iguais...
This work proposes a new method for nitrite determination in natural waters and foodstuff samples by diffuse reflectance spectroscopy combined with spot tests. In this method, the reaction occurs on the surface of a filter paper. Firstly 30 μL of the cromogenic reagent solution were added to the paper, followed by 30 μL of sample solution. The intensity of the color of the reaction product is measured by diffuse reflectance, at 532 nm. Experimental design was employed for the development of this method and the optimized reagent concentrations found were 9.60 × 10-3 mol L-1 for N-(1-naphtil)ethylenediamine hydrochloride and 5.90 × 10-2 mol L-1 for sulfanilic acid. The cromogenic solution was composed by the mixture of both reagents with HCl 6.00 x 10-2 mol L-1, in deionized water. A linear relationship (r = 0.997) was observed in the concentration range of 2.90 × 10-4 to 1.74 × 10-3 mol L-1 of nitrite, by plotting reflectance values versus the logarithm of nitrite concentration in the standard solutions. In order to work with lower quantities of nitrite, the concentrations of sulfanilic acid and N-(1-naphtil)ethylenediamine hydrochloride were diluted to a half of the concentrations proposed by the experimental design. The calibration curve constructed under these conditions showed a linear relationship (r = 0.997) ranging from 7.17 x 10-6 to 4.35 x 10-4 mol L-1 of nitrite ions, by plotting reflectance values versus the concentration of nitrite standard solutions. The colored product had an optical stability of at least 50 minutes in ambient conditions and of three days when kept under nitrogen atmosphere. In the investigation of intraday and iterday precision, the RSD values obtained were 1.51% and 2.01%, respectively. The new method was applied to the analysis of two samples of natural waters and one sausage sample. The results obtained 9 by the proposed method were compared with... (Complete abstract click electronic access below)
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Gasparini, Fabrícia [UNESP]. "Avaliação e adaptação das condições da EN 14103 para quantificação de ésteres em biodieseis etílicos puros de soja, babaçu, palma e sebo bovino e em suas misturas". Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/97960.
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gasparini_f_me_araiq.pdf: 836513 bytes, checksum: 7fffedd795ac8077c7df0d4a0be84269 (MD5)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Nos últimos anos o biodiesel foi agregado à matriz energética brasileira como um componente de grande importância, sobretudo do ponto de vista estratégico e ambiental. O biodiesel, obtido a partir de óleos/gorduras, apresenta várias vantagens enquanto pretenso substituto do diesel. A grande diversidade de óleos e gorduras possibilita encontrar uma gama de matérias primas dispersas em todo o território brasileiro com grande potencial para produção de biodiesel. Porém, biodieseis produzidos a partir de diferentes matérias primas podem apresentar restrições relacionadas às metodologias utilizadas no controle de sua qualidade. Os métodos normalizados estabelecidos pela ANP às vezes não se aplicam a biodieseis obtidos a partir de certas fontes de triacilglicerídeos. A EN 14103, norma que estabelece o método para determinação do teor de éster em biodieseis, foi elaborada para a análise de biodieseis exclusivamente metílicos obtidos de óleos/gorduras que possuem ésteres de cadeias carbônicas predominantes na faixa de C14:0 a C24:1. A norma estabelece o C17:0 (heptadecanoato de metila) como padrão interno. Considerando o cenário nacional, a EN 14103 torna-se inadequada para a quantificação de biodieseis etílicos e metílicos que apresentam quantidades relevantes de ésteres de cadeias carbônicas curtas (C8:0 a C12:0), além disso, a utilização do C17:0 como padrão interno inviabiliza também a quantificação de biodieseis que o contém em sua composição. Através de uma avaliação e adaptação das condições da EN 14103, foi possível quantificar biodieseis etílicos provenientes de matérias primas e/ou “blends” que possuem cadeias carbônicas na faixa C8:0 a C24:1, utilizando padrões tanto metílicos quanto etílicos. O estudo viabilizou ainda a quantificação de biodieseis etílicos que possuem o C17:0 em sua...
In the last years the biodiesel was added to the Brazilian energetic matrix as a great important component, mainly under the strategic and environmental aspects. The biodiesel, obtained from oil/fat, presents several advantages as substitute of the diesel. The great variety of oils and fats allow finding a range of raw materials dispersed throughout the Brazilian territory with huge potential for producing biodiesel. However, restriction related to the methodology employed in the biodiesel quality control can be related by the variety of raw materials. Nor all the standardized methods established by the ANP are applied to the biodiesel obtained from any oleaginous. EN 14103, method applied to quantify the biodiesel ester content, was elaborated to analysis exclusively methylic biodiesel produced from oil/fat, which contains carbonic chain esters between C14:0 and C24:1. This method employs C17:0 (methyl heptadecanoate) like internal standard. Considering the national scene, this method becomes inadequate for the ethylic biodiesel quantification that presents relevant quantities of short carbon chains esters (C8:0 and C12:0). Furthermore, the use of C17:0 as internal standard also affect the biodiesel quantification containing this ester in his composition. Through an evaluation and adaptation of the EN 14103 conditions, was possible to quantify ethylic biodiesel obtained from raw materials and/or blends that have carbon chains between C8:0 and C24:1, using both methylic and ethylic standards. This study also enabled the quantification of ethyl biodiesel having the C17:0 in his composition, using the methylic C17:0 (methyl heptadecanoate) as internal standard
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Alemohammad, Seyed Hamed. "Characterization of uncertainty in remotely-sensed precipitation estimates". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97260.
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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2015.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 141-156).
Satellite-derived retrievals of precipitation have increased in availability and improved in quality over the last decade. There are now several satellites in orbit with instruments capable of precipitation retrieval with various degrees of accuracy, spatial resolution and temporal sampling. These retrievals have the advantage of almost full global coverage when compared to surface gauges and ground-based radars. However, there are uncertainties associated with each of these retrievals. This thesis focuses on developing a new framework for characterizing uncertainties in remotely-sensed precipitation estimates. This characterization is a prerequisite if these estimates are to be used in hydrological models. Precipitation forcing is the primary source of uncertainty in surface hydrological models used for forecasting and data assimilation. In the first part of the thesis, a new metric of error is applied to evaluate precipitation products from Special Sensor Microwave/Imager (SSM/I) instrument. The SSM/I microwave measurements are used for quantitative precipitation rate retrievals and they are key to the development of precipitation data products with high temporal sampling. Results show marked seasonality and precipitation intensity dependence as well as a lower bias at higher intensities and in geographic locations where precipitation rates are generally higher. Next, a new stochastic method is developed to generate spatially intermittent precipitation replicates. These replicates constitute a prior population that can be updated in a Bayesian framework using observations. Bayesian approach allows us to both merge different measurements and investigate the associated uncertainties. Finally, a new ensemble-based approach to the characterization of uncertainties (in both magnitude (intensity) and phase (location)) associated with precipitation retrieval from space-born instruments is introduced. Unlike previous studies, this method derives the error likelihood using an archive of historical measurements and provides an ensemble characterization of measurement error. The ensemble replicates are generated using the proposed stochastic method, and they are intermittent in space and time. The replicates are first projected in a low-dimensional subspace using a problem-specific set of attributes. The attributes are derived using a dimensionality-reduction approach that takes advantage of singular value decomposition. A non-parametric importance sampling technique is formulated in terms of the attribute vectors to solve the Bayesian sampling problem. Results indicate that this ensemble estimation approach provides a useful description of precipitation uncertainties with posterior ensemble that is narrower in distribution than its prior.
by Seyed Hamed Alemohammad.
Ph. D.
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Merriman, Lauren A. (Lauren Amanda). "Examination of the United States domestic fusion program". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97860.
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Thesis: S.B., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, February 2015.Cataloged from PDF version of thesis. "February 2015."
Includes bibliographical references (pages 46-47).
Fusion has been "forty years away", that is, forty years to implementation, ever since the idea of harnessing energy from a fusion reactor was conceived in the 1950s. In reality, however, it has yet to become a viable energy source. Fusion's promise and failure are both investigated by reviewing the history of the United States domestic fusion program and comparing technological forecasting by fusion scientists, fusion program budget plans, and fusion program budget history. It is evident that delays in progress were due to both technologic and economic setbacks. In order for the US to become a leader in fusion energy, it must continue supporting domestic fusion experiments while maintaining involvement in ITER.
by Lauren A. Merriman.
S.B.
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Mejias, Luis (Luis Eric). "Solving the housing crisis in San Francisco with factory-built housing technology and regulatory reform". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97960.
Texto completo da fonteResumo:
Thesis: S.M. in Real Estate Development, Massachusetts Institute of Technology, Program in Real Estate Development in conjunction with the Center for Real Estate, 2015.Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 145-150).
The San Francisco Bay Area is in the midst of a housing crisis as population and economic growth outstrip the ability of developers to build enough housing, resulting in a significant supply-demand imbalance that is expected to last well into the foreseeable future. San Francisco, in particular, faces the most severe housing crunch as demographic trends favor increasing demand in already dense, transit-rich cities. Developers are unable to supply the necessary housing due to significant barriers to development including a lengthy and convoluted planning and entitlement process, zoning restrictions on density and height, neighborhood opposition, and a high cost of land. Supply needs to outpace demand if housing is to become affordable, and this requires regulatory reform and cost reduction. Based on case studies, interviews and development analysis, this thesis will demonstrate how developers and municipal leaders can address the crisis by embracing factory-built housing while reforming regulations.
by Luis Mejias.
S.M. in Real Estate Development
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Mahmood, Zohaib. "Algorithms for passive dynamical modeling and passive circuit realizations". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97760.
Texto completo da fonteResumo:
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 163-174).
The design of modern electronic systems is based on extensive numerical simulations, aimed at predicting the overall system performance and compliance since early design stages. Such simulations rely on accurate dynamical models. Linear passive components are described by their frequency response in the form of admittance, impedance or scattering parameters which are obtained by physical measurements or electromagnetic field simulations. Numerical dynamical models for these components are constructed by a fitting to frequency response samples. In order to guarantee stable system level simulations, the dynamical models of the passive components need to preserve the passivity property (or inability to generate power), in addition to being causal and stable. A direct formulation results into a non-convex nonlinear optimization problem which is difficult to solve. In this thesis, we propose multiple algorithms that fit linear passive multiport dynamical models to given frequency response samples. The algorithms are based on convex relaxations of the original non-convex problem. The proposed techniques improve accuracy and computational complexity compared to the existing approaches. Compared to sub-optimal schemes based on singular value or Hamiltonian eigenvalue perturbation, we are able to guarantee convergence to the optimal solution within the given relaxation. Compared to convex formulations based on direct Bounded-Real (or Positive-Real) Lemma constraints, we are able to reduce both memory and time requirements by orders of magnitude. We show how these models can be extended to include geometrical and design parameters. We have applied our passive modeling algorithms and developed new strategies to realize passive multiport circuits to decouple multichannel radio frequency (RF) arrays, specifically for magnetic resonance imaging (MRI) applications. In a coupled parallel transmit array, because of the coupling, the power delivered to a channel is partially distributed to other channels and is dissipated in the circulators. This dissipated power causes a significant reduction in the power efficiency of the overall system. In this work, we propose an automated eigen-decomposition based approach to designing a passive decoupling matrix interfaced between the RF amplifiers and the coils. The decoupling matrix, implemented via hybrid couplers and reactive elements, is optimized to ensure that all forward power is delivered to the load. The results show that our decoupling matrix achieves nearly ideal decoupling. The methods presented in this work scale to any arbitrary number of channels and can be readily applied to other coupled systems such as antenna arrays.
by Zohaib Mahmood.
Ph. D.
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Lovegren, Jonathan A. (Jonathan Anders). "Estimation of potential aircraft fuel burn reduction in cruise via speed and altitude optimization strategies". Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/97360.
Texto completo da fonteResumo:
Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (page 96).
Environmental performance has become a dominant theme in all transportation sectors. As scientific evidence for global climate change mounts, social and political pressure to reduce fuel burn and C0 2 emissions has increased accordingly, especially in the rapidly growing aviation industry. Operational improvements offer the ability to increase the performance of any aircraft immediately, by simply changing how the aircraft is flown. Cruise phase represents the largest portion of flight, and correspondingly the largest opportunity for fuel burn reduction. This research focuses on the potential efficiency benefits that can be achieved by improving the cruise speed and altitude profiles operated by flights today. Speed and altitude are closely linked with aircraft performance, so optimizing these profiles offers significant fuel burn savings. Unlike lateral route optimization, which simply attempts to minimize the distance flown, speed and altitude changes promise to increase the efficiency of aircraft throughout the entire flight. Flight data was collected for 257 flights during one day of domestic US operations. A process was developed to calculate the cruise fuel burn of each selected flight, based on aircraft performance data obtained from Piano-X and atmospheric data from. NOAA. Improved speed and altitude profiles were then generated for each flight, representing various levels of optimization. Optimal cruise climbs and step climbs of 1,000 and 2,000 ft were analyzed, along with optimal and LRC speed profiles. Results showed that a maximum fuel burn reduction of 3.5% is possible in cruise given complete altitude and speed optimization; this represents 2.6% fuel reduction system-wide, corresponding to 300 billion gallons of jet fuel and 3.2 million tons of CO₂ saved annually. Flights showed a larger potential to improve speed performance, with nearly 2.4% savings possible from speed optimization compared to 1.5% for altitude optimization. Few barriers exist to some of the strategies such as step climbs and lower speeds, making them attractive in the near term. As barriers are minimized, speed and altitude trajectory enhancements promise to improve the environmental performance of the aviation industry with relative ease.
by Jonathan A. Lovegren.
S.M.
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Dantile, Andiswa Mesatywa. "Language in public spaces : language choice in two IsiXhosa speaking communities (Langa and Khayelitsha)". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97060.
Texto completo da fonteResumo:
Thesis (MPhil)--Stellenbosch University, 2015.ENGLISH ABSTRACT: The purpose of this thesis was to investigate language in public spaces, specifically looking at language choices in two IsiXhosa speaking communities, namely Langa and Khayelitsha. The thesis, therefore, sought to determine why the two communities, which are inhabited largely by L1 IsiXhosa speakers, appear to be dominated by English and Afrikaans in public areas, with minimal presence of IsiXhosa. Possible contributors to the perceived language shift in public spaces include local entrepreneurs, the media (two community newspapers), the government (in their offices and advertisements) and the linguistic landscape itself (formal and informal language usage). The communities of Langa and Khayelitsha are both identified as previously disadvantaged communities with large parts of its population being less affluent due to limited educational opportunities, unemployment and a general lack of skills. A questionnaire, administered to 100 inhabitants of Langa and Khayelitsha, provided data on the perceptions of language use in public spaces in these communities as well as participants’ preferences with regard to language use in public spaces. This study provides evidence that the language use in public spaces in these two communities is not fully diverse and inclusive as it only targets individuals who either have advance formal education or are at least reasonably comfortable with English and Afrikaans. Examples of formal and informal signage examined, such as advertisements, government notices and community-related notices, show that the language used is that of the advertisers or officials, who are typically non-speakers of IsiXhosa, and not that of the target market for which the content is intended. The language preferences of the designers of the signage in public spaces are thus foregrounded at the cost of, and in spite of, the language preferences of those who live within the communities of Langa and Khayelitsha.
AFRIKAANSE OPSOMMING: Hierdie tesis het beoog om taal in publieke ruimtes te ondersoek deur spesifiek te kyk na taalkeuse in twee Xhosa-sprekende gemeenskappe, naamlik Langa en Khayelitsha. Die tesis het dus gepoog om vas te stel waarom hierdie twee gemeenskappe wat grootendeels Xhosaeerstetaalsprekend is, grootliks deur Engels en Afrikaans in publieke ruimtes bedien word met minimale isiXhosa teenwoordigheid. Van die rolspelers wat tot hierdie tipe taalverskuiwing in openbare ruimtes kon bygedra het, sluit in plaaslike entrepeneurs, die media (twee gemeenskapnuusblaaie), die regering (in hulle kantore en advertensies) asook die taallandskap self (formele en informele taalgebruik). Die gemeenskappe van Langa en Khayelitsha word albei geïdentifiseer asvoorheenbenadeelde gemeenskappe met die meerderheid van die inwoners minder gegoed as gevolg van beperkte opvoedkundige geleenthede, werkloosheid en 'n algemene gebrek aan vaardighede. ‘n Vraelys wat deur 100 inwoners van Langa en Khayelitsha ingevul is, het data voorsien oor die persepsies van taalgebruik in openbare ruimtes in hierdie gemeenskappe, sowel as oor deelnemrs se voorkeure met betrekking tot taalgebruik in openbare ruimtes. Hierdie studie bied getuienis dat die taalgebruik in hierdie twee gemeenskappe nie ten volle divers en inklusief is nie, aangesien dit slegs taalgebruikers teiken wat beduidende formele opleiding het en wat ten minste redelik met Afrikaans en Engels bekend is. Voorbeelde van formele en informele kennisgewings, soos advertensies, regeringsinligting en gemeenskapsaketoon aan dat die taalgebruik eerder die adverteerders of amptenare wat nié Xhosa-sprekend is nie, in ag neem, as die teikenmark op wie die inhoud eintlik gemik is. Die taalvoorkeure van die ontwerpers van openbare kennisgewings kry dus voorkeur bo, en ten spyte van die taalvoorkeure van diegene wat binne die gemeenskappe van Langa en Khayelitsha leef.
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Smit, Shaun Gareth. "The success factors for employee ownership implementation". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97360.
Texto completo da fonteResumo:
Thesis (MBA)--Stellenbosch University, 2015.ENGLISH ABSTRACT: Today’s business world is characterised by technological advance, globalisation, and concentrated ownership of productive assets. The result is a dysfunctional economy with income being concentrated with capital owners, and related economic insecurity for a majority of the population. Employee ownership offers a more balanced economy with more distributed capital ownership. This is particularly relevant in South Africa, which faces numerous socio-economic challenges. The South African government has specifically identified employee ownership as a means to facilitate broad-based economic empowerment of previously disadvantaged persons. Employee ownership not only offers benefit at societal level, it also offers a vehicle to provide benefit at personal and organisational levels. Given the benefits of employee ownership, the objectives of this research are to identify the success factors of employee ownership implementation, and assess whether such success factors have been addressed in implementation of employee ownership in South Africa. The research methodology involved performance of a literature review of success factors of employee ownership implementation and a qualitative study involving a discussion framework and semi-structured interviews regarding implementation of employee ownership in South Africa. Interviewees included management of South African companies that have implemented employee ownership, trade union representatives involved with employee ownership, employee ownership scheme fiduciaries, socio-economic development specialists, and employee ownership advisors. The literature review provided the international context to employee ownership and related success factors, and the interviews provided a South African analysis thereof. The research findings identified success factors which relate to education and training of employees; ensuring the initiative is perceived as being fair; delivering meaningful financial benefit to employee participants; establishing an ownership-oriented culture in the business; instilling a commitment to pursuing key business disciplines; implementing sound employee ownership governance; engaging with unions; and employing specialist advisors. The identified success factors were used to develop a success factor framework, which was used in guiding discussions with interviewees, and which was compared to Employee Share Ownership Scheme requirements as set out in the Codes of Good Practice on Broad-based Black Economic Empowerment. The findings included that implementation in South Africa has predominantly been compliance driven, in an attempt to address transformation – specifically ownership by historically disadvantaged South Africans. Management has typically not been focussed on changing business culture or operations, and no success factors in this regard have been addressed. Employee ownership in South Africa has, in general, been considered a failure as few schemes have delivered meaningful financial benefit to participants. The recommendations for businesses implementing employee ownership are regarding awareness of primary objectives, understanding the potential benefits of employee ownership, understanding related success factors, and managing employee expectations. The recommendations for government organisations that wish to promote employee ownership implementation as well as obtain maximum benefit for employees, businesses, and society as a whole are regarding understanding the potential benefits of employee ownership, understanding related success factors, considering past employee ownership successes and/or failures, and consideration of appropriateness of policies and legislation. Further employee ownership research includes study of best practice structuring; challenges faced by businesses; the employee perspective; South African policies and legislation and assessment against recognised success factors; and study of international tax treatment in order to drive South African implementation.
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Khambule, Nhlanhla. "The impact of co-operative finance on household income : a case study of co-operatives in KwaZulu-Natal". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97460.
Texto completo da fonteResumo:
Thesis (MDF)--Stellenbosch University, 2015.ENGLISH ABSTRACT: This study is on the impact of cooperative societies on capital formation using a case study of selected cooperatives in Kwazulu Natal province of South Africa. The study is a novel empirical investigation in that focuses on impact of cooperative societies financing on members and how that may translate into significant increase in household incomes. The study assess and evaluates the roles played by cooperative societies’ financing and loans services on members’ economic condition particular their business expansion, profitability and later on improvements in household incomes. Using focus group discussion and questionnaire, the study uncovers the activities of cooperative societies located in both urban and rural communities within KZN Province. The study provides some evidence on the importance of leaving conditions after member access to cheap and affordable loans and provides some insights into the development of rural businesses, how complex they are, and how they require more input than just the financing received through cooperative loans as a final end. It also breaks new ground in informal cooperative operations, community improvement and rural finance research by providing a peculiarity between standard of living and quality of life variables in measuring and determining the economic condition of rural livelihoods and the production of circle of New Institutional Economics theory that the role of cooperatives to the members involve financial capital, physical capital and social capital which are interrelated. This serves to properly distinguish and appropriately identify the roles of cooperative societies in rural finance to increase in household income, ownership of assets and acquisition of enterprise assets. However, the study reveals that access to funds and participation in the cooperative does not lead to enterprise profitability, thus less capital accumulation while rural financial needs are more accessible from cooperatives than other sources. From its findings, this study identified and discussed potential areas for the improvement of cooperative societies that could be of benefit to any urban and rural finance providers and the cooperative members.
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Gomes, Roger Marcelo Martins. "Angústia e prazer nas relações de poder das organizações escolares /". Assis : [s.n.], 2005. http://hdl.handle.net/11449/97660.
Texto completo da fonteResumo:
Orientador: Francisco HashimotoBanca: Inês Amosso Dolci
Banca: Marlene Castro Waideman
Resumo: As organizações escolares de ensino privado, voltadas para educação de mercado, são responsáveis por uma relação paradoxal vivida por seus professores. Apesar da exploração, dominação e controle exercidos pela organização, que geram angústia e sofrimento, esses profissionais, enquanto indivíduos, manifestam uma relação prazerosa com o seu trabalho. Para investigarmos esta questão, buscamos definições teóricas de três categorias fundamentais: a organização como sistema de mediações, o poder como relação de forças e o indivíduo como sujeito sofrente. A partir dessas definições, buscamos analisar as formas de poder exercidas pelas organizações escolares sobre seus professores, a fim de demonstrar como se dá a construção da subjetividade destes indivíduos nessas relações. Utilizamos oito entrevistas semi-diretivas de professores de Ensino Médio de escola particular, adotando como técnica a entrevista psicológica para obtenção de dados e a abordagem sociomental de perspectiva dialética para análise de dados. A aplicação desta metodologia trouxe como resultado dois apontamentos marcantes das vidas dos entrevistados durante a formação escolar: a evocação e reedição do conflito angústia e prazer que será operado pela organização e a descoberta da afinidade com a área do conhecimento, que interferirá no percurso de sua vida. No trabalho, o professor se depara com o poder das organizações escolares que opera de duas formas: por mecanismos coercitivos, repressivos e castradores como o cumprimento rigoroso às regras e a ameaça de demissão e, por um sistema de mediação das contradições ...(Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Private school institutions with a free market education perspective are responsible for a paradoxal relation experienced by their teachers. Despite the feeling of exploitation, control and domination present in the administration of this kind of school, which generate anguish and suffering, these professionals demonstrate a pleasurable relation with their working environment. In order to investigate this issue we select theoretical definitions for three fundamental categories: the organization as a system of mediations, the power relation perceptions and the individual as a suffering subject. Based on these definitions we tried to analyze the patterns of power exerted over the teachers by the school organizations and to demonstrate the subjectivity construction process of these individuals within this relation. We carried out eight semi directed interviews with secondary private school teachers, using as technique the psychological interviews for obtaining data and the sociomental approach of dialectical perspective for analyzing these data. The use of this methodology yielded two significant life dimensions of these interviewees during their school years formation: the evocation and reenactment of the aguish and pleasure conflict which will be operated by the organization and the discovering of affinity with an area of knowledge which will interfere in his/her course of life. In the working environment the teacher faces the power of the school organizations in two dimensions: on one hand, coercive, repressive and castrating mechanisms for a rigorous commitment to the rules and the threat of dismissal, on the other hand, a system for the mediation of these contradictions ...(Complete abstract, click electronic address below)
Mestre
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Sartori, Juliana Elisa 1978. "Avaliação da sensibilidade in vitro de isolados de Colletotrichum lindemuthianum a fungicidas /". Botucatu : [s.n.], 2007. http://hdl.handle.net/11449/97160.
Texto completo da fonteResumo:
Orientador: Antonio Carlos MaringoniBanca: Silvania Helena Furlan de Oliveira
Banca: Marta Helena Vechiato
Resumo: Colletotrichum lindemuthianum (Sacc. & Magn.) Scrib. e o agente causal da antracnose do feijoeiro (Phaseolus vulgaris L.), doenca fungica de grande importancia para a cultura, pois pode causar perdas de ate 100% na producao, quando sao utilizadas cultivares suscetiveis e sementes infectadas, sob condicoes ambientais favoraveis ao desenvolvimento de epidemias. O presente trabalho objetivou avaliar a sensibilidade in vitro de 20 isolados de Colletotrichum lindemuthianum, provenientes de diferentes regioes do pais, a cinco fungicidas de diferentes principios ativos e algumas misturas (carbendazin, chlorothalonil, tiofanato metilico, chlorothalonil + tiofanato metilico, trifloxystrobin, propiconazol, trifloxystrobin + propiconazol), em cinco diferentes concentracoes (0, 1, 10, 100 e 1000 -Êg.mL-1) adicionados em meio de cultura batata-dextrose-agar (BDA). Os isolados cresceram por sete dias a 25 -C no meio de cultura BDA e apos esse periodo, discos de 0,5 cm de micelio do fungo, foram transferidos para placas de Petri com o meio BDA contendo as diferentes concentracoes de fungicidas. As placas foram incubadas por sete dias a 25 -C, avaliado o crescimento medio do diametro das colonias (em cm) e calculado os valores de porcentagem de inibicao do crescimento micelial dos isolados em relacao ao tratamento testemunha. Os resultados mostraram que para os fungicidas carbendazin e tiofanato metilico, 11 isolados fungicos foram totalmente ou parcialmente inibidos na concentracao de 1 ou 10 -Êg.mL-1. Chlorothalonil mostrou-se menos eficiente que os demais produtos pelo fato de inibir o crescimento micelial de apenas tres isolados na concentracao de 1000 -Êg.mL-1. A mistura de chlorothalonil e tiofanato metilico mostrou a inibicao total do crescimento micelial de quatro isolados a 1 -Êg.mL-1, e, a 1000 -Êg.mL-1, oito isolados mostraram-se sensiveis a mistura desses produtos... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Colletotrichum lindemuthianum (Sacc. & Magn.) Scrib. is the causal agent of anthracnose in bean (Phaseolus vulgaris L.). This fungal disease has great importance in the crop, since it may cause yield losses of up to 100% when susceptible cultivars and infected seeds are used under environmental conditions that favor the development of epidemics. The aim of this work was to evaluate the in vitro sensitivity of 20 isolates of Colletotrichum lindemuthianum from different regions of the country, to five fungicides with different active principles and some mixtures (carbendazim, chlorothalonil, methyl thyophanate, chlorothalonil + methyl thyophanate, trifloxystrobin, propiconazole, trifloxystrobin + propiconazole), at five different concentrations (0, 1, 10, 100, and 1000 ìg.mL-1), added to potato-dextrose-agar (PDA) culture medium. The isolates were cultured for seven days at 25 °C in PDA medium, after which 0.5 cm disks of fungal mycelium were transferred to Petri dishes containing PDA medium and the various concentrations of fungicides. The Petri dishes were incubated for seven days at 25 °C. We evaluated the mean growth in diameter of the colonies (in cm) and calculated percentage values for mycelial growth inhibition of the isolates in relation to the control treatment. The results showed that 11 fungal isolates were completely or partially inhibited by the fungicides carbendazim and methyl thyophanate at concentrations of 1 or 10 ìg.mL-1. Chlorothalonil proved less effective than the other products, as it inhibited mycelial growth in only three isolates, at the concentration of 1000 ìg.mL-1. The chlorothalonil and methyl thyophanate mixture showed complete mycelial growth inhibition in four isolates at 1 ìg.mL-1, while eight isolates were sensitive to the mixture of these products at 1000 ìg.mL-1. The propiconazole and trifloxystrobin mixture was the most effective and inhibited growth... (Complete abstract click electronic access below)
Mestre
28
Leitão-Lima, Patrícia da Silva 1973. "Levantamento da entomofauna em sítios florestais em recuperação e em um fragmento de floresta natural em Botucatu, SP /". Botucatu, 2002. http://hdl.handle.net/11449/97260.
Texto completo da fonteResumo:
Orientador: Carlos Frederico WilckenResumo: O trabalho teve por objetivo avaliar a comunidade de insetos em três sítios degradados sob processo de recuperação (sítios 1, 2 e 3) e um fragmento de floresta nativa na região de Botucatu, SP. O levantamento das espécies de insetos foi realizado quinzenalmente no período de maio de 2000 a maio de 2001, utilizando-se uma armadilha luminosa por área estudada. As espécies de insetos coletadas com maior freqüência tiveram sua flutuação populacional representada graficamente e a caracterização da comunidade encontrada foi feita pelos seguintes índices faunísticos: freqüência, abundância, diversidade, equitatividade e similaridade para Lepidoptera, Coleoptera, Hemiptera-Heteroptera, Hymenoptera e demais ordens encontradas. Foi observada baixa densidade de indivíduos de insetos coletados no fragmento de mata em relação aos demais sítios. O sítio com menor desenvolvimento das árvores foi o que mais se distanciou em número de indivíduos do fragmento de mata. Foi coletado um total de 876 espécies e 15.332 indivíduos de insetos, sendo a ordem Lepidoptera responsável por 44,03% do total de indivíduos e de 80,25% das espécies coletadas, com maior número para as famílias Noctuidae e Arctiidae, principalmente nas áreas com recuperação mais lenta. As densidades de espécies de Geometridae e Saturniidae foram superiores no fragmento de mata. Pelo índice de diversidade de Shannon-Weaver foi verificada maior diversidade de lepidópteros no fragmento de mata e menor diversidade no sítio 2. O mesmo resultado foi verificado para Coleoptera e Hymenoptera. Hemiptera-Heteroptera e demais ordens de insetos apresentaram maior diversidade no fragmento de mata e o sítio 1 foi a área alterada com menor diversidade...(Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The work aimed to evaluate the insect community in three degraded sites under recovery process (sites 1, 2 and 3) and the native forest fragment in region of Botucatu, SP, Brazil The insects monitoring was accomplished bi-weekly during May, 2000 to May 2001, using a light trap for each studied area. The insect species collected with higher frequency had its populational dynamic represented graphically and community was characterizated using the following faunistic indexes: frequency, abundance, diversity, equitability and similarity for Lepidoptera, Coleoptera, Hemiptera-Heteroptera, Hymenoptera and other orders. It was observed individuals of insects with low density collected in the native fragment regarding the other sites. The sites with smaller development trees showed reduced number of individuals in comparision with native fragment. It was collected 876 species of insects and 15332 individuals, with order Lepidoptera representing 44,03% from the individuals total and of 80,25% of the collected species, with larger number for the families Noctuidae and Arctiidae, mostly in the areas with slower recovery. The species densities of Geometridae and Saturniidae were superior in native forest fragment. By the Shannon-Weaver diversity index was verified larger lepidopterous diversity in the native forest and smaller diversity in the site 2. The same result was verified for Coleoptera and Hymenoptera. Hemiptera-Heteroptera and insects of other orders presented larger diversity in the native forest fragment and the site 1 was the area changed with smaller diversity. The degraded sites in recovery process had very low similarity with the native forest fragment for Lepidoptera and for the other insect orders...(Complete abstract, click electronic access below)
Mestre
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Magalhães, Ticiane da Silva. "Estudo de pré-tratamentos de bagaço de cana para produção de etanol celulósico por hidrólise enzimática /". São José do Rio Preto : [s.n.], 2011. http://hdl.handle.net/11449/97760.
Texto completo da fonteResumo:
Orientador: Mauricio BoscoloBanca: Vanildo Luiz Del Bianchi
Banca: George Jackson de Moraes Rocha
Resumo: Utilizando o bagaço de cana como matéria prima para a produção do etanol brasileiro pode-se aumentar a produção em 50% deste combustível sem o aumento de área cultivada com a cana de açúcar. A hidrólise química deste material demonstrou ser ineficiente à medida que gera um grande número de substâncias inibidoras do processo fermentativo alcoólico, como aldeídos furânicos e fenóis. A hidrólise enzimática vem se destacando como a forma mais viável de sacarificação do bagaço, em função de não gerar tais inibidores, mas a recalcitrância da fibra vegetal impede tal processo. A ação das enzimas hidrolíticas é muito dificultada pela forma como se encontra naturalmente a fibra vegetal: regiões de alta cristalinidade e a presença de lignina revestindo as fibras. O preparo do bagaço para a ação enzimática, normalmente denominado de pré-tratamento, utiliza condições extremas de temperatura e pressão que podem formar produtos tóxicos para a fermentação alcoólica e apresentam sérios riscos operacionais. O objetivo deste trabalho é avaliar o grau de desestruturação do bagaço após pré-tratamentos em soluções ácidas e alcalinas em glicerol e irradiadas com micro-ondas (MO) em dois modos: estático e rotativo. A melhor condição para a ação hidrolítica do complexo enzimático empregado foi obtida em meio não tamponado (água destilada) durante 24 horas. As maiores liberações de açúcares redutores totais (ART) após a hidrólise enzimática foram alcançadas quando o bagaço foi pré-tratado com irradiação de MO por dois minutos em modo rotativo em meio ácido (0,07 mol/L H2SO4) em 100% glicerol (617 ± 24 mg de ART/g de bagaço) e em meio alcalino (0,05 mol/L NaOH) em 100% glicerol... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The production of the Brazilian bioethanol can be increased in 50% without expanding the area cultivated with sugarcane by using sugarcane bagasse as raw material. Its recalcitrance is an obstacle to enzymatic hydrolysis, which can be overcome by physical-chemical treatments. Common pre-treatments using extreme conditions of temperature and pressure are dangerous, promote the generation of toxic compounds (phenols and aldehydes) besides being potentially inhibitory for yeast. The aim of this work is to assess the degree of disruption of the bagasse after pre-treatment in acidic and alkaline glycerol, irradiated with microwaves both in the static and rotational modes. The enzyme complex showed the best results with the reactions promoted in a non-buffered (distilled water) at 24 hours. The best results for the pre-treatment were found after inserting a rotation system in the microwave oven inasmuch as the samples were subjected to irradiation in a more homogeneous way. The best pre-treatment was obtained after enzymatic hydrolysis in sulfuric acid (0.07 mol/L), in pure glycerol, with the rotation of the balloon inside the microwave oven (617 ± 24 mg of ART/g bagasse). In alkaline medium, the best result was found in the absence of water in the reaction medium (0.05 mol/L NaOH) with the rotation of the balloon inside the microwave oven (601 ± 58 mg of ART/g of bagasse). Differential Scanning Calorimetry (DSC) allows to evaluate the degree of disruption of bagasse comparing the enthalpy change, which can be associated with disruption of bounds in pre-treated bagasse. Among the pre-treated bagasse, it is observed that the bagasse treated with NaOH 0.05 mol/L and 5% of water in glycerol had the lowest ΔH, suggesting greater breakdown of carbohydrates after pre-treatment
Mestre
30
Gasparini, Fabrícia. "Avaliação e adaptação das condições da EN 14103 para quantificação de ésteres em biodieseis etílicos puros de soja, babaçu, palma e sebo bovino e em suas misturas /". Araraquara : [s.n.], 2010. http://hdl.handle.net/11449/97960.
Texto completo da fonteResumo:
Orientador: José Eduardo de OliveiraBanca: Luciana Polese
Banca: Vitor Hugo Polisel Pacces
Resumo: Nos últimos anos o biodiesel foi agregado à matriz energética brasileira como um componente de grande importância, sobretudo do ponto de vista estratégico e ambiental. O biodiesel, obtido a partir de óleos/gorduras, apresenta várias vantagens enquanto pretenso substituto do diesel. A grande diversidade de óleos e gorduras possibilita encontrar uma gama de matérias primas dispersas em todo o território brasileiro com grande potencial para produção de biodiesel. Porém, biodieseis produzidos a partir de diferentes matérias primas podem apresentar restrições relacionadas às metodologias utilizadas no controle de sua qualidade. Os métodos normalizados estabelecidos pela ANP às vezes não se aplicam a biodieseis obtidos a partir de certas fontes de triacilglicerídeos. A EN 14103, norma que estabelece o método para determinação do teor de éster em biodieseis, foi elaborada para a análise de biodieseis exclusivamente metílicos obtidos de óleos/gorduras que possuem ésteres de cadeias carbônicas predominantes na faixa de C14:0 a C24:1. A norma estabelece o C17:0 (heptadecanoato de metila) como padrão interno. Considerando o cenário nacional, a EN 14103 torna-se inadequada para a quantificação de biodieseis etílicos e metílicos que apresentam quantidades relevantes de ésteres de cadeias carbônicas curtas (C8:0 a C12:0), além disso, a utilização do C17:0 como padrão interno inviabiliza também a quantificação de biodieseis que o contém em sua composição. Através de uma avaliação e adaptação das condições da EN 14103, foi possível quantificar biodieseis etílicos provenientes de matérias primas e/ou "blends" que possuem cadeias carbônicas na faixa C8:0 a C24:1, utilizando padrões tanto metílicos quanto etílicos. O estudo viabilizou ainda a quantificação de biodieseis etílicos que possuem o C17:0 em sua... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: In the last years the biodiesel was added to the Brazilian energetic matrix as a great important component, mainly under the strategic and environmental aspects. The biodiesel, obtained from oil/fat, presents several advantages as substitute of the diesel. The great variety of oils and fats allow finding a range of raw materials dispersed throughout the Brazilian territory with huge potential for producing biodiesel. However, restriction related to the methodology employed in the biodiesel quality control can be related by the variety of raw materials. Nor all the standardized methods established by the ANP are applied to the biodiesel obtained from any oleaginous. EN 14103, method applied to quantify the biodiesel ester content, was elaborated to analysis exclusively methylic biodiesel produced from oil/fat, which contains carbonic chain esters between C14:0 and C24:1. This method employs C17:0 (methyl heptadecanoate) like internal standard. Considering the national scene, this method becomes inadequate for the ethylic biodiesel quantification that presents relevant quantities of short carbon chains esters (C8:0 and C12:0). Furthermore, the use of C17:0 as internal standard also affect the biodiesel quantification containing this ester in his composition. Through an evaluation and adaptation of the EN 14103 conditions, was possible to quantify ethylic biodiesel obtained from raw materials and/or "blends" that have carbon chains between C8:0 and C24:1, using both methylic and ethylic standards. This study also enabled the quantification of ethyl biodiesel having the C17:0 in his composition, using the methylic C17:0 (methyl heptadecanoate) as internal standard
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Martini, Ana Paula. "Influência da espessura da camada de cimento e da variação da temperatura no comportamento mecânico de fragmentos cerâmicos utilizados em restaurações estéticas /". Araçatuba : [s.n.], 2012. http://hdl.handle.net/11449/97360.
Texto completo da fonteResumo:
Orientador: Eduardo Passos RochaBanca: Paulo Francisco Cesar
Banca: Paulo Henrique dos Santos.
Resumo: Introdução: Fragmentos cerâmicos têm sido utilizados como opção restauradora em dentes anteriores com necessidade de pequenas correções de contorno e forma. A espessura da camada de cimento resinoso e a variação da temperatura intra-bucal são fatores influentes no sucesso das restaurações cerâmicas convencionais como inlays, onlays, coroas e laminados. Entretanto, a literatura não apresenta dados sobre a influência destes dois fatores no comportamento mecânico do fragmento cerâmico que geralmente apresenta dimensões não uniformes, principalmente nos limites da restauração. Proposição: O objetivo do presente estudo é analisar, através do método dos elementos finitos tridimensional (EF 3-D), o comportamento da camada de cimento resinoso e da cerâmica, variando a espessura da camada de cimento e a temperatura intra-bucal. Materiais e Métodos: Após a obtenção do conjunto de imagens microtomográficas de um incisivo central maxilar, o modelo sólido do dente será elaborado no programa Mimics. A partir deste modelo inicial (M), 5 modelos serão elaborados no programa SolidWorks, simulando a restauração do ângulo disto-incisal com o uso de um fragmento cerâmico colado ao substrato dental, variando a espessura da camada de cimento resinoso: M1 - 0 μm de espessura; M2 - 50 μm em toda... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Introduction: Ceramics fragments have been used for dental/aesthetic restorative purposes in the anterior dentition. The cement layer thickness and temperature variation play an important role for the adequate biomechanical behavior of the ceramics in case of inlays, onlays, total crown and laminate veneers. However, those aspects has not been evaluated in case of ceramics fragments that usually shows non-uniform dimension and shape which might have negative influence in the behavior of dental ceramics fragments. Purpose: The aim of this study was evaluated by 3-D finite element analysis the mechanical behavior of the cement layer and ceramic fragment varying the cement layer thickness and the temperature. Materials and Methods: After obtaining the microtomography data set of a maxillary central incisor, the solid model was rebuild using Mimics program. The model was exported to the Solidworks program for the simulation of a defect at the distal/incisal edge. This defect was restored with a ceramic fragment bonded to the enamel surface. From this restored model (M), 5 different models were tested: M1 - cement layer (CL) showing 0 μm of thickness; M2 - CL with an uniform thickness of 50 μm; M3 - CL with 50 μm at the margin of ceramics and 100 μm in the inner area; M4 - CL with 50 μm at the margin of ceramics and 200 μm in the inner area; and M5 - CL with 100 μm at the margin of ceramics and 200 μm in the inner area. In all models, the environment temperature changed from 5ºC to 50ºC in 4 increments. The finite element (FE) mesh was refined drove by convergence of analysis. The numerical approach was performed using Ansys Workbench FE program. Results: The maximum principal stress... (Complete abstract click electronic access below)
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Cabral, Cibele Zanirato. "Descrição e análise das contingências presentes na proposta de Estatuto da Pessoa com Deficiência /". Bauru : [s.l.], 2007. http://hdl.handle.net/11449/97460.
Texto completo da fonteResumo:
Orientador: Ana Cláudia Moreira Almeida VerduBanca: Maria Amália Pie Abib Andery
Banca: Kester Carrara
Resumo: Políticas públicas têm estabelecido diretrizes para que seja garantida igualdade de oportunidade de acesso aos diversos ambientes a despeito diferenças presentes na população, visando a promoção de uma sociedade menos segregatória e mais inclusiva. Enquanto prática, para que a igualdade de acesso seja garantida, requer que o foco das ações seja deslocado da diferença individual para a adaptação do ambiente físico e social. A inclusão pode ser descrita enquanto um fenômeno social complexo, resultado de ações que são estabelecidas e mantidas por diferentes agências como governo, instituições formadoras de educadores, escolas, pessoas com necessidades educativas especiais, suas famílias e a mídia. Uma das ações que pode oferecer condições para que práticas inclusivas sejam apresentadas é o estabelecimento de leis. Leis, no âmbito deste trabalho, são compreendidas enquanto formulações verbais que descrevem comportamentos e que, para melhor compreensão e governo do comportamento dos indivíduos de um grupo deve especificar as ações a serem realizadas, sob quais circunstâncias e prever consequências para seu cumprimento ou não. Este trabalho teve como objetivo analisar o Projeto de Lei do Senado nº 6, de 2003, que "Institui o Estatuto da Pessoa com Deficiência e dá outras providências", que está em processo de reformulação com possibilidades de votação ainda para o presente ano e identificar e descrever enunciados de contingências e caracterizá-las em relação à: presença dos termos em completas ou incompletas... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Public politics established lines to ensure the equality of access opportunity to several environments in spite of the population differences, aiming at promoting of a less segregated and more inclusive society. In practice, so that the equality of access be guaranteed, requires that the focus of the actions be dislocated from the individual difference to the physical and social environment adjustment. The inclusion can be described as a complex social phenomenon, a result of actions established and kept for different agencies such as the government, formative educators institutions, schools, people with educative special necessities, their families and the media. One of the actions which can provide conditions so that the inclusive practices be adopet is the establishment of laws. Laws, inside his project, are understoods as verbal formulations which describe behavior, and for a better understanding and the behavior contol of the individual from a group, must specify the actions to be done, under such circumstances and predict consequences for its accomplishment or not. This project had as objective to analyse The Senate Law Project nº 6, from 2003, which "Institutes The Statute of the Person with Disability and provides other measures", which is in process of reformation with the possibility of being voted in the current year and identify and describe uncertain propositions and characterize them according to: a presence of the terms in complete and incomplete; at the presence of the orders of governmental consequences; whether... (Complete abstract click electronic access below)
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Menegazzi, Marlene. "Potencialidades e limitações de um trabalho colaborativo sobre frações na formação inicial de professores que ensinam matemática". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/97860.
Texto completo da fonteResumo:
A presente dissertação é relativa a uma investigação sobre as potencialidades e limitações do trabalho de um grupo colaborativo durante a formação inicial de professores que ensinam frações. Participaram da pesquisa alunos de um curso de Pedagogia. O objetivo principal da pesquisa foi identificar as concepções de frações que os estudantes apresentam e analisar de que modo a participação nas atividades de um grupo colaborativo podem contribuir para o processo de ressignificação de tais concepções. Para tanto, constituiu-se um grupo de oito alunas de um curso de Pedagogia, que interagiram durante um total de oito encontros, nos quais foram produzidos os dados para a análise. Como referencial teórico nos aproximamos da teoria sócio-histórica de Vygostky, da educação matemática crítica de Skovsmose e dos estudos sobre grupos colaborativos e das comunidades de prática, dentre outros que tomam por objeto a formação de professores que ensinam matemática, em especial nos cursos de Pedagogia. A abordagem metodológica adotada foi a qualitativa com a utilização de diferentes tipos de registros, permitindo a triangulação dos dados. Identificamos alguns limitadores durante o percurso: o período curto de realização do trabalho, a postura dos participantes internalizada e apropriada através do ambiente acadêmico que reproduz crenças e discursos sem uma adequada construção conceitual e, principalmente, significativas dificuldades com relação ao conteúdo matemático de frações. Em contrapartida, algumas características ou dimensões de um grupo colaborativo foram evidenciadas. Os participantes demonstraram diferentes identidades de participação, compartilharam um objetivo comum, um empreendimento mútuo e as tarefas foram compartilhadas. A pesquisadora, como sendo também uma integrante do grupo, foi provocada a desenvolver as diferentes dimensões de sua participação. Nesse sentido, a pesquisa mostrou ser viável o trabalho com grupos colaborativos na formação inicial considerando o contexto, particularidades dos participantes da pesquisa e as atividades desenvolvidas.This thesis reports a research about the potentialities and restrictions of collaborative group work during initial training of teachers who teach fractions. Teaching academics took part in this research. The main objective was to identify the notion of fractions held by the students and to analyze the way in which participation in the activities of a collaborative group may contribute to the process of re-establishing the meaning in those conceptions. In order to do so, a total of eight students of the teaching course interacted in eight meetings through which data was produced for the analysis. As a theoretical basis we used Vykotsky’s Socio-historical Approach, Critical Mathematics Education by Skovsmose and studies about collaborative work, communities of practice, among others whose object is vocational training of Math teachers, especially in teaching courses. The methodological approach chosen was qualitative and interpretative with the use of different types of register, allowing triangulation of data. Some limitations were identified in the process: the short duration of the project, participants’ attitudes internalized and borrowed from the academic environment, which reproduces beliefs and discourses without an appropriate conceptual construction, and, mainly, important difficulties related to the mathematical subject: fractions. On the other hand, some characteristics or dimensions of a collaborative group were evidenced. The participants demonstrated different identities of participation, shared a common objective, a mutual undertaking and the tasks were shared. The researcher, as part of the group, was provoked to develop different dimensions of participation. The group knew how to determine priorities, drawing its paths and building its history of participation. This way, the research showed that working with collaborative groups in teachers’ education is practicable, taking into account the context and particularities of the participants and the activities developed.
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Bach, Mariana Ferrari. "Síntese de copolímeros enxertados polibutadieno-poli(l-ácido lático) e poli(etileno-1-buteno)-poli(ácido lático)". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/97960.
Texto completo da fonteResumo:
Neste estudo, foram utilizadas três estratégias para a síntese de copolímeros enxertados de polibutadieno hidroxilado (PBLH) e poli(etileno-1-buteno) hidroxilado (PE-OH) com poli(ácido lático) (PLA). Primeiramente, foi realizada a síntese do PE-OH pela hidrogenação via diimida do PBLH, e então foram realizadas as reações de copolimerização. A primeira estratégia de copolimerização utilizada foi a policondensação de L-ácido lático in situ, que consiste na policondensação de ácido lático em presença de PBLH e PE-OH. Esta estratégia levou obtenção de produtos baixa incorporação de ácido lático (< 32% molar). A segunda estratégia utilizada foi a de acoplamento de PBLH e PE-OH com PLA sintetizado previamente. Para isso, foram utilizadas duas metodologias de esterificação, uma empregando o catalisador SnCl2.2H2O e outra empregando DCC e DMAP. Nas condições estudadas, não foi possível a formação somente de copolímeros, pois, além do acoplamento de PBLH e PE-OH com PLA, ocorreu acoplamento entre cadeias de PLA e outras cadeias não acoplaram. A terceira estratégia empregou PBLH e PE-OH como macroiniciadores para a polimerização por abertura de anel de lactídeo (ROP) e mostrou-se a mais promissora, pois existe a certeza de que todas as cadeias de PLA estão acopladas ao PBLH e PE-OH, já que estes são os macroiniciadores para a polimerização. Foi realizada a caracterização dos produtos por RMN 1H, GPC, TGA, DSC, DOSY, MEV e reometria. Por ROP, foram obtidos copolímeros com massa molar entre 9000 e 21000 gmol-1 (GPC), com massa molar dos blocos de PLA entre 1200 e 2200 gmol-1 (RMN 1H), contendo de 30 a 55% molar de PLA em rendimentos de 64 a 96%.In this study, three strategies were used for synthesis of grafted copolymers of hydroxy terminated polybutadiene (HTPB) and poly(ethylene-butene-1) hydroxylated (PE-OH) with poly(lactic acid) (PLA). Firstly, PE-OH was synthesized via the diimide hydrogenation of HTPB, and then were performed copolymerization reactions. The first copolymerization strategy employed the polycondensation of L-lactic acid in the presence of HTPB and PE-OH. This strategy led to products with low incorporation of lactic acid (< 32 % molar). The second strategy was the coupling of HTPB and PE-OH with previously synthesized PLA. In this case, two esterification methods were performed, using SnCl2.2H2O as catalyst and DCC/DMAP. This strategy was no efficient since a mixture of products was obtained consisting in coupled HTPB and PE-OH with PLA chains, coupled PLA-PLA chains and uncoupled chains. The third strategy employed HTPB and PE-OH macroinitiator for ring-opening polymerization of (L and D) lactide and was found to be the most promising because there is the certainty that all the chains of PLA are coupled to HTPB and PE-OH. We performed the characterization of the products by 1H NMR, GPC, TGA, DSC, DOSY, SEM and rheometer. By ring-opening copolymerization were obtained copolymers with molecular weight between 9000 and 21000 gmol-1 (GPC), with molecular weight of PLA blocks from 1200 to 2200 gmol-1 (1H NMR), containing from 30 to 55% PLA, with molar yields 64-96%.
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勝盛, 典子. "近世異国趣味美術の史的研究". 京都大学, 2010. http://hdl.handle.net/2433/97960.
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Kyoto University (京都大学)0048
新制・論文博士
博士(人間・環境学)
乙第12426号
論人博第32号
新制||人||118(附属図書館)
21||論人博||32(吉田南総合図書館)
27522
(主査)教授 松田 清, 教授 稲垣 直樹, 教授 岡田 温司, 教授 江田 憲治, 教授 西垣 安比古, 教授 篠原 資明
学位規則第4条第2項該当
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Ballalai, Rodrigo Clemente. "O jovem no movimento hip hop : espaço potencial de criatividade e identificação? /". Assis : [s.n.], 2009. http://hdl.handle.net/11449/97560.
Texto completo da fonteResumo:
Orientador: Olga Ceciliato MattioliBanca: Diana Pancini de Sá Antunes Ribeiro
Banca: Leila Rute Oliveira Gurgel do Amaral
Resumo: A partir de experiência de estágios da graduação em Psicologia, particularmente no trabalho desenvolvido junto ao "Programa de Liberdade Assistida" da FEBEM, unidade Bauru, quando oferecemos um pronto atendimento psicológico a seus participantes, iniciamos o contato com o movimento hip hop. Entrevistamos jovens que se identificam com o movimento hip hop, analisando sua trajetória ao ingressarem nos grupos organizados de hip hop do município de Bauru. Analisamos suas biografias e percepções que estes jovens têm de si e de sua realidade social. O instrumento utilizado foi a entrevista semi dirigida, cuja aplicação ocorreu individualmente O procedimento para a análise das informações se apoiou no método psicanalítico. Analisamos o que leva os jovens a participarem do referido movimento, por meio do conceito psicanalítico de identificação. Verificamos que a significação que os jovens atribuem ao hip hop pode ser entendido como um espaço potencial de criatividade, de acordo com a teoria do psicanalista inglês Donald Winnicott. Encontramos diferentes usos desse movimento cultural, de acordo com a singularidade de cada participante, inclusive manifestado pelos diversos meios de participação artística e ideológica de seus componentes. No campo identificatório consideramos o movimento hip hop como modelo identificatório contemporâneo e significativo para grande parcela da população jovem. Como apresenta Maria Rita Kehl, o tratamento de irmãos ("manos") indica um campo de identificação horizontal com um grupo de pessoas iguais, oriundas de uma mesma realidade dolorosa; distinto de uma identificação vertical, tal como ocorre na grande massa em relação ao líder ou ídolo.
Abstract: During the course of training in psychology, especially in a work with the Program of Freedom Febem Assisted in the unit of Bauru, offering psychological care ready to participants, initiated the contact with the hip hop movement. In this study, we analyzed the motivation of some young people to join this movement, to perform such analysis, we used the psychoanalytic concept of identification. We want to check the meaning given by these young people to the hip hop movement, and if this can be seen as a potential space for creativity. Young people interviewed are identified with the hip hop movement, and why we are looking at their life stories the moment they began to join the hip hop movement organized in the city of Bauru. I reviewed their biographies and their perceptions about themselves and about social reality in which they live. We conducted semi-directed interviews with each couple in particular. We use the psychoanalytic method to analyze the content of the interviews, especially the theory developed by psychoanalyst Donald Winnicot.
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Lemos, Sahra Cavalcante. "Desenvolvimento de metodologia alternativa limpa para análise de nitrito /". Araraquara : [s.n.], 2008. http://hdl.handle.net/11449/97860.
Texto completo da fonteResumo:
Orientador: Helena Redigolo PezzaBanca: Adelino Vieira de Godoy Netto
Banca: Matthieu Tubino
Resumo: O presente trabalho propõe um novo método para análise de nitrito em amostras de águas naturais e alimentos, por espectroscopia de reflectância difusa combinada com spot test. Neste método, a reação de interesse é procedida em papel de filtro, por meio da adição de 30 μL da solução do reagente cromogênico, seguida da adição de 30 μL da solução de analito. A intensidade da coloração do produto é medida por reflectância difusa, em 532 nm. O desenvolvimento do método passou por uma etapa de planejamento experimental, que permitiu encontrar as concentrações ótimas dos reagentes, para as quais a sensibilidade do método é maior (9,60 × 10-3 mol L-1 para o dicloridrato de naftiletilenodiamina e 5,90 × 10-2 mol L-1 para o ácido sulfanílico). O reagente cromogênico foi preparado misturando-se os dois compostos em uma mesma solução, juntamente com ácido clorídrico, na concentração de 6,00 x 10-2 mol L-1. Uma relação linear (r = 0,997) foi observada na faixa entre 2,90 × 10-4 e 1,74 × 10-3 mol L-1 de ânions nitrito, representando os valores de reflectância obtidos versus o logaritmo da concentração de nitrito. Com o objetivo de trabalhar com quantidades ainda menores do analito, as concentrações dos reagentes cromogênicos foram reduzidas pela metade, exceto a do ácido clorídrico, que permaneceu constante, e uma segunda curva analítica (r = 0,997) foi construída na faixa entre 7,17 x 10-6 e 4,35 x 10-4 mol L-1 de íons nitrito, representando-se graficamente os valores de reflectância obtidos versus a concentração de analito presente nas soluções. O produto colorido mostrou uma estabilidade óptica de pelo menos 50 minutos em atmosfera ambiente e de três dias, se mantido em dessecador com atmosfera de nitrogênio. O método apresentou bons valores de precisão intradia e interdia, com RSD iguais... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: This work proposes a new method for nitrite determination in natural waters and foodstuff samples by diffuse reflectance spectroscopy combined with spot tests. In this method, the reaction occurs on the surface of a filter paper. Firstly 30 μL of the cromogenic reagent solution were added to the paper, followed by 30 μL of sample solution. The intensity of the color of the reaction product is measured by diffuse reflectance, at 532 nm. Experimental design was employed for the development of this method and the optimized reagent concentrations found were 9.60 × 10-3 mol L-1 for N-(1-naphtil)ethylenediamine hydrochloride and 5.90 × 10-2 mol L-1 for sulfanilic acid. The cromogenic solution was composed by the mixture of both reagents with HCl 6.00 x 10-2 mol L-1, in deionized water. A linear relationship (r = 0.997) was observed in the concentration range of 2.90 × 10-4 to 1.74 × 10-3 mol L-1 of nitrite, by plotting reflectance values versus the logarithm of nitrite concentration in the standard solutions. In order to work with lower quantities of nitrite, the concentrations of sulfanilic acid and N-(1-naphtil)ethylenediamine hydrochloride were diluted to a half of the concentrations proposed by the experimental design. The calibration curve constructed under these conditions showed a linear relationship (r = 0.997) ranging from 7.17 x 10-6 to 4.35 x 10-4 mol L-1 of nitrite ions, by plotting reflectance values versus the concentration of nitrite standard solutions. The colored product had an optical stability of at least 50 minutes in ambient conditions and of three days when kept under nitrogen atmosphere. In the investigation of intraday and iterday precision, the RSD values obtained were 1.51% and 2.01%, respectively. The new method was applied to the analysis of two samples of natural waters and one sausage sample. The results obtained 9 by the proposed method were compared with... (Complete abstract click electronic access below)
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Silva, Neto Aurelio Moreira da. "Modelagem e simulação das juntas de um manipulador robótico cilíndrico /". Guaratinguetá, 2008. http://hdl.handle.net/11449/97060.
Texto completo da fonteResumo:
Orientador: José Geraldo Trani BrandãoBanca: Francisco José Grandinetti
Banca: Anselmo Monteiro Ilkiu
Resumo: O estudo de um modelo matemático completo, incluindo os servos atuadores, a dinâmica do corpo rígido e o planejamento e geração de trajetórias do manipulador robótico cilíndrico, é um indispensável ponto de partida para aplicações de simulação das juntas e controle de movimentos. As equações cinemáticas obtidas pelas técnicas da Matriz de Transformação Homogênea e Matriz de Transformação Inversa são a solução para a geração de trajetórias, as quais podem ser feitas no espaço cartesiano ou no espaço das juntas e também possibilitam gerar o volume de trabalho do manipulador, que é de grande interesse para a especificação de determinada configuração em aplicações ou tarefas específicas. As equações de movimento foram derivadas usando a formulação Lagrangiana para predizer o comportamento do manipulador quanto à influência da geometria e os parâmetros de massa do manipulador.
Abstract: The study of a complete mathematical model including the servos actuators, the dynamics of the body rigid and the planning and generation of the manipulator's cylindrical robotic trajectories is an indispensable starting point for applications of simulation of the joints and control of movements. The Kinematic equations obtained by the techniques Homogeneous Transformation Matrix and Inverse Transformation Matrix make is the solution for generation of trajectories that can be done in the cartesian space or in the space of the joints and they also make possible to generate the volume of the manipulator's work that is of great interest for specification certain configuration in applications or specific tasks. The movement equations were derived using the formulation Lagrangiana to predict the manipulator's behavior as for the influence of the geometry and the parameters of the manipulator's mass.
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Griffith, William Clark. "Limiting CP violation through a search for a permanent electric dipole moment of mercury 199 atoms /". Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/9760.
Texto completo da fonte
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森, 祐司, e Yuji MORI. "メルヴィルの『タイピー』試論 ―「文明」か、「野生」か―". 名古屋大学文学部, 1987. http://hdl.handle.net/2237/9760.
Texto completo da fonte
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Zhao, Ensheng. "Equations of state for nonelectrolyte and electrolyte solutions". Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/9760.
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A modification of the Adachi-Sugie-Lu (ALS) (1983) equation of state for better simultaneous representation of vapor-liquid equilibria, saturated liquid and vapor volumes, and vaporization enthalpies was presented. The Wong-Sandler mixing rule (1992) was extended for a general cubic equation of state, and its application was further extended to electrolyte solutions. A critical review of equations of state was made in order to identify important consideration in equation of state design. Mixing rules were briefly reviewed for the purpose of selecting a suitable mixing rule for the modified ALS equation. The models for electrolyte solutions were briefly reviewed for selecting a suitable model for calculating thermodynamic properties of electrolyte solutions by using the modified ALS equation. Monte Carlo computer simulation methods were reviewed as well since they were used in this work for the determination of equation parameters for ionic species. The modification of the ALS equation was based on an analysis of the Clapeyron equation, which describes the relationship between the vaporization volume change $\rm\Delta V\sb{vap}$ and enthalpy change $\rm\Delta H\sb{vp}.$ A new characteristic parameter, T$\rm\sb{r}(\Delta$Z = 0.5), was introduced for improving the performance of the equation on the simultaneous representation of volumetric and energy properties. Analysis of pure component data for 86 polar and non-polar fluids shows that a balanced and better representation of saturated vapor and liquid volumes is achieved. A new exponential form for $\alpha$(T) was proposed. The first derivative of this new $\alpha$(T) function is zero at the critical point, making the extension of $\alpha$ to the super-critical region easier and in a smooth manner. An extended Wong-Sandler mixing rule was proposed for its application to the modified ALS equation, which can represent most of cubic equations of state. The extended Wong-Sandler mixing rule with the modified ALS equation was evaluated using vapor-liquid equilibrium, volumetric and excess enthalpy data. Comparisons of several cubic equations of state with several mixing rules were made. This work gives better results for the simultaneous representation of vapor-liquid equilibrium and volumetric properties. For the simultaneous representation of VLE and excess enthalpy data, the results from this work are comparable with those obtained by using the PRSV equation (Stryjek and Vera, 1986) with the original Wang-Sandler mixing rule and better than those obtained by using other equations and mixing rules. The application of the extended Wong-Sandler mixing rule was further extended to electrolyte solutions by combining an activity coefficient model proposed by Chen et al (1982, 1986). The results obtained from the new approach for the calculated osmotic coefficients of aqueous electrolyte solutions are comparable with the original Chen's model (1986) but better than those reported by Zuo and Guo (1991), who obtained the values by means of a different cubic equation of state. The new approach was also applied to represent VLE values of ethanol-water-salt systems. The results show that the extension work is successful.
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Hernández, López Mª José. "Torulaspora delbrueckii: aplicaciones tecnológicas y aislamiento de genes de respuesta a estrés". Doctoral thesis, Universitat de València, 2005. http://hdl.handle.net/10803/9760.
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Durante los últimos años la producción de masas congeladas para bollería ha experimentado un notable incremento. La calidad de estos productos está lejos de la que se obtiene a partir de masas frescas Esto es debido a la sensibilidad al proceso de congelación y descongelación de S. cerevisiae y a la reducción de su capacidad fermentativa durante el almacenamiento. Si las masas congeladas son azucaradas el problema es todavía mayor. En la elaboración de masas dulces se utiliza hasta un 30% de azúcar provoca una fuerte reducción de la actividad de agua generando ambientes de alta presiones osmóticas. Como consecuencia de todo esto el tiempo de fermentación de estas masas se prolonga y el volumen del producto se reduce. Para resolver este problema es habitual que los industriales añadan cantidades adicionales de levadura de entre un 8-12% lo cual incrementa el coste del producto final y modifica sus características organolépticas. Todo esto ha generado la demanda de nuevas cepas de levadura de panadería con características de osmotolerancia y crioresistencia. Sin embargo pese a los numerosos esfuerzos realizados para la construcción, mediante técnicas de genética clásica o de ADN-recombinante, de cepas industriales más osmotolerantes y crioresistentes, no se dispone en la actualidad de ninguna cepa comercial que cumpla estos requisitos. Frente a esta alternativa, en este trabajo nos planteamos el estudio y la utilización en el proceso de panificación de levaduras silvestres de panaderia con características intrínsecas de crioresistencia y osmotolerancia Concretamente, hemos centrado nuestro interés en el estudio de T. delbrueckii. Dos cepas de esta especie, las cepas PYCC5321 e IPYCC5323, muestran una elevada viabilidad y capacidad fermentativa en masas congeladas. Esta característica junto con el hecho de que son levaduras que se encuentran frecuentemente en alimentos y bebidas con altas concentraciones de azúcares nos lleva a pensar en la posibilidad de utilizar esta especie como modelo de estudio de tolerancia a estrés en levadura de panadería. Esta tesis esta estructurada en forma de publicaciones. En la primera de ellas se estudia la potencial utilización industrial de las cepas de T. delbrueckii PYCC5321 y PYCC5323 para la producción de masas dulces congeladas, analizando además parámetros fisiológicos relacionados con osmotolerancia y crioresistencia como son la síntesis y acumulación de glicerol y trehalosa. El segundo Capítulo de este trabajo comprende dos publicaciones centradas en la obtención de herramientas moleculares para poder utilizar a T. delbrueckki como modelo de levadura de panadería de tolerancia a estrés. En la primera de ellas se describe como la obtención de una genoteca de la cepa PYCC5321 nos ha permitido clonar y caracterizar el gen TdURA3 de T. delbrueckki. En la segunda publicación se muestra la obtención de cepas auxótrofas para uracilo en esta levadura con las cuales hemos analizado la potencialidad T. delbrueckii para expresar y secretar proteínas heterólogas. En el tercer Capítulo se estudian en T. delbrueckii las dos rutas mas importantes implicadas en la respuesta a estrés osmótico y salino en levadura, la ruta HOG y la ruta de la calcineurina-Crz1p. Para este fin, hemos aislado el gen TdHOG1 , que codifica un proteína altamente homóloga a la MAP quinasa Hog1p , así como los genes TdENA1 y TdCRZ1 los cuales codifican respectivamente para una proteína homologa a la ATPasa ENA1, implicada en la detoxificación celular de sodio y litio, y para un factor trancripcional con una cierta homología al factor Crz1p de S. cerevisiae.This work is organized as a compound of five publications. On the first one we confirm that T. delbrueckii strains PYCC5321 and PYCC5323, fulfil the most important requisites of modern baking in sweet and frozen sweet doughs. We also observed that the strain PYCC5321 shows a clear phenotype of osmotolerance and Na+ toxicity resistance in synthetic media. Therefore these strain could be a good model to identify co-ordinately expressed genes under those conditions in bakers yeast. On the second part of this work we used a genomic library of the PYCC5321 strain in order to isolated the TdURA3 gene, encoding a orotidine-5'-phosphate decarboxilase, and we used the sequence of these gene to construct a T. delbrueckii Ura- host strain for genetic manipulation, the FRY112 strain. Due to the potential biotechnological application of Torulaspora, we used these strain to confirm its use as a host of heterologous genes. In the last part of this work, we studied in T. delbrueckii two of the most important pathways implied in osmotolerance and ionic resistance in S. cerevisiae, the HOG pathway and the Calcineurin-Crz1p pathway. For this purpose, we have cloned the TdHOG1 gene, encoding a putative 427-amino acids protein which displayed a high degree of identity with the MAPK Hog1p of S. cerevisiae. We also cloned the TdENA1 and TdCRZ1 genes , which a putative Na+/Li+ P-Type ATPase and a zinc finger protein homologous to S. cerevisiae Crz1p. We concluded that in T. delbrueckii exists a HOG and Calcineurin-Crz1p pathways with different functional roles of S. cerevisiae.
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Ydgren, Andrew James. "Post-Conflict Policing: The Experience of New Zealand Police in Solomon Islands". Thesis, University of Canterbury. School of Language, Social and Political Sciences, 2014. http://hdl.handle.net/10092/9760.
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The thesis explores the roles and reponsibilities of New Zealand Police deployed under the Regional Assistance Mission to Solomon Islands, established in 2003. Their work under this banner continues a growing trend that sees the deployment of constabulary police officers to post-conflict societies to re-establish order and build a framework for sustainable peace. Where the existing literature considers the normative dimensions of this trend, this thesis looks more closely at the micro-level interaction between international police officers and citizens of post-conflict societies. In particular, it asks questions about the suitability and sustainability of the community policing model; a model that has developed over several decades in an internal law-enforcement context but is relatively new to the peace-building sphere.
The research focus is drawn from the extensive literature on the use of community policing in domestic contexts but is adapted in order to speak back to the literature on peace-bulding and international policing.
The everyday experiences of New Zealand Police were deployed to Solomon Islands were explored through semi-structured interviews. In particular, the thesis found that officers experiences little of the ethnic conflict that had, according to international media, been the hallmark of the Tension period and that they showed a nuanced understanding of the social and political climate of the communities they operated in. It further found that, while officers were often keen to show respect for local tradition and local power structures, they also saw that in some cases these structures needed to be broken down for the safety and well-being of local people, particularly women and children. The New Zealand style of community policing sometimes clashed with that other contingents but overall the strength of the personal and professional relationships they had with those they worked with was the most decisive factor influencing their experience.
While much of the discussion centres on the community model, the findings highlight the importance of people in the peace-building process. The model played an important role in facilititating a broad-based policing initiative in Solomon Islands but it was the personal investment by individual officers going about their everyday work that was often crucial in breaking down the barriers to peace. The finding points to the importance of empowering communities in exercising ownership over the peace-building process and the role that police officers from another country can play in encouraging that process.
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Yu, Zhou. "China's Urban Housing Reform---With Specific Emphasis on Property Ownership". Virginia Tech, 1998. http://hdl.handle.net/10919/9760.
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This research paper examines China's urban housing reform with a historical perspective, which provides an insight into current housing policy. In the past two decades, urban housing in China has been under a drastic transformation. As a critical component of the economy, the housing sector has played a very active role in restructuring China's economic system. The housing reform has encountered significant resistance. This research focuses on the property rights issue, which is a major concern in housing reform. With a comparative approach, the study addresses the basic research question, what are the fundamental barriers in urban housing reform. The research also involves a comprehensive review of the concept of the property rights and related issues in Western countries to establish a theoretical framework for furthering China's housing reform in term of property rights. The research also involves an inspection of housing reform in selected post-socialist countries to explore alternative transformation policies. Further housing reform policy is also articulated.Master of Urban and Regional Planning
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Picton, Hannah Kathryn. "Post-stroke depression (PSD) and post-stroke emotional liability (PSEL) : a systematic review of non-pharmacological interventions for PSD, and a qualitative study of specialist professionals' conceptualisation of PSEL". Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/9760.
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Aims: a review of the literature on non-pharmacological interventions for post-stroke depression (PSD) was completed with the aim of examining issues regarding the design and methodology of trials for non-pharmacological interventions for PSD. The empirical research study used a constructivist Grounded Theory approach to explore specialist stroke professionals' conceptualisations of post-stroke emotional lability (PSEL). The author also aimed to examine how staff experienced, understood and identified PSEL in clinical practice, and particularly how they differentiated it from PSD. Method: A systematic review of RCT and non-RCT studies was conducted to address the first aim. In relation to the second aim, a qualitative investigation of specialist professionals' conceptualisations of PSEL was conducted using Charmaz' (2006) version of constructivist Grounded Theory. Results: The systematic review highlighted the importance of appropriate sampling methods, multiple treatment design, rigorous data collection, the implementation and monitoring of interventions, assessment of participant suitability for the intervention, and issues related to long-term sustainability (follow-up) when designing and evaluating non-pharmacological interventions for PSD. The qualitative investigation yielded a conceptual model of how specialist professionals conceptualise and identify PSEL in their clinical practice. Conclusions and implications: The findings from the systematic review and the qualitative investigation highlighted a range of issues for specialist stroke services. The systematic review emphasised the importance of further evaluation and consideration of carefully planned randomised controlled trials for investigating non-pharmacological interventions for PSD. The qualitative study indicated a need for further guidance on the assessment and identification of PSEL, training for staff, and further examination of the caused of PSEL.
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Farmer, Marie. "Caractérisation clinique et par la tomographie d’émission par positrons quantitative du trouble de l’acquisition de la coordination". Thèse, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/9760.
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Résumé : Le trouble de l’acquisition de la coordination (TAC), d’étiologie encore indéterminée, est une anomalie neurologique affectant environ 6% des enfants de l'âge scolaire. Le TAC se manifeste essentiellement par un déficit au niveau des exécutions motrices. Le présent travail de recherche comporte deux volets portant sur le TAC. Premièrement, une étude clinique sur 129 sujets âgés de 4 à 18 ans a permis de classifier les caractéristiques du TAC en sous-groupes cliniques. Trente-trois caractéristiques du TAC, les plus fréquemment rapportées dans la littérature, ont été recensées chez nos sujets. L'application d'évaluations statistiques a permis de faire ressortir trois classes essentielles. Le deuxième volet consistait à identifier les régions cérébrales impliquées dans une tâche motrice à l'aide de l'imagerie par la tomographie d'émission par positrons (TEP). Deux sujets avec TAC et deux sujets normaux ont été étudiés en deux séances d'imagerie TEP dont l'une au repos et l'autre en tapotant du pouce sur les doigts de la main gauche non-dominante. Les analyses du premier volet ont montré, entre autres, que le TAC touchait 3.17 garçons pour une fille, que tous les sujets étaient lents, que 47% des sujets étaient gauchers ou ambidextres alors que seulement 10% sont gauchers dans la population générale, que 26% avaient une dyspraxie verbale, et que 83% avaient été diagnostiqués anxieux. Les sujets ont été classés en trois sous-groupes: 1- maladroits et autres caractéristiques, sans problème de langage; 2- trouble de l’estime de soi et relation avec les pairs; 3- difficulté de langage. En imagerie, les structures cérébrales ont été classées selon leur captation du 18F-fluorodesoxyglucose (FDG) dans les hémisphères droit et gauche, avant et après l'activation, et en comparaison avec les sujets normaux. Trois types de structures cérébrales sont ressortis avec les statistiques: des structures activées, celles relativement non sollicitées et des structures désactivées. Il y avait plus de variations dans la captation du FDG chez les sujets avec TAC que chez les normaux. En conclusion, la caractérisation des sujets avec TAC par le diagnostic clinique et par l'imagerie peut procurer un plan de thérapie adéquat et ciblé étant donné que le TAC a un large spectre et pourrait coexister avec d'autres déficits cérébraux.Abstract : Developmental Coordination Disorder (DCD) is a neurological abnormality affecting approximately 6% of children of school age. DCD is essentially manifested by deficit in motor executions. The present research aims two parts of DCD. First, a clinical study on 129 subjects aged 4 to 18 years old allowed to classify DCD characteristics (subtyping) in three classes. Thirty-three features of DCD, the most frequently reported in literature, have been identified in our subjects. The application of statistical clustering produced three essential classes. The second part was to identify the brain regions involved in a motor task using positron emission tomography (PET) imaging. Subjects with DCD and control subjects were studied in two PET imaging sessions at rest and then by tapping the thumb on each finger of the left non-dominant hand. The results showed, that DCD concerned 3.17 boys for one girl, all subjects were slow, 47% of the subjects were left-handed or ambidextrous while only 10% are left-handed in general population, 26% had a verbal dyspraxia, and 83% had been diagnosed with anxiety. Subjects were classified into three groups: 1- clumsy and other features without language problem; 2- self-esteem and peer relationships concern; 3- difficulty of spoken language. With PET imaging, the brain structures were classified according to their uptake of 18F-fluorodeoxyglucose (FDG) in the right and left hemispheres before and after activation, and compared with normal subjects. Three types of brain structures statistically emerged: activated structures, those relatively unsolicited and those disabled. There was more variation in uptake of FDG in patients with DCD than in control subjects. In conclusion, the characterization of subjects with DCD for clinical diagnostic and imaging can provide adequate and focused treatment plan since DCD has a broad spectrum and could coexist with other brain deficits.
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Bravo, Castagnola Francis Geraldo. "Manejo de alveolos postextracción con implantes inmediatos". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/9760.
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Publicación a texto completo no autorizada por el autorEl documento digital no refiere asesor
Revisa la mejor evidencia disponible en relación al tratamiento con implantes inmediatos así como presentar los resultados de la colocación de un implante inmediato en un paciente masculino de 32 años en remplazo de una pieza fracturada. Luego del período de cicatrización, se observa una oseointegración adecuada de implante, pero se produce una ligera recesión de la mucosa periimplantaria. Esto evidencia la necesidad de colocación de un injerto de tejido conectivo para mejorar los resultados estéticos de la rehabilitación final posterior. Se concluye que los implantes inmediatos presentan un alta tasa de sobrevivencia y oseointegración comparable con implantes convencionales; sin embargo, la aparición de recesiones constituye una complicación frecuente que requiere procedimiento complementarios.
Trabajo académico
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Lacerda, Alexandra Maria Pereira de. "A Influência dos factores ambientais na prática de actividade física em idosos : Estudo em idosos residentes no concelho da Maia". Master's thesis, Universidade do Porto. Reitoria, 2004. http://hdl.handle.net/10216/9760.
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Dissertação de Mestrado Ciência do Desporto, área de especialização em Actividade Física para a Terceira Idade, apresentada à Faculdade de Ciências do Desporto e de Educação Física da Universidade do Porto
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Sohn, Suk Joo. "Strategic Transgressions and Agency in Postcolonial Indian Literature in English: Rohinton Mistry, Arundhati Roy, and Salman Rushdie". Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/9760.
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Transgression as a mode of resistance and transformation is significant yet largely untheorized in postcolonial literature. This dissertation is concerned with theoretical and textual practices by which transgression can be studied as a locus of agency and difference toward the possibility of fostering moments and spaces of transformation. To that end, it explores various enabling counter-hegemonic modes of strategy and tactic with a focus on the body in the texts of Rohinton Mistry, Arundhati Roy, and Salman Rushdie. Transgression does not simply give rise to the capacity of resistance to transform the dominant structure. Rather than dwelling on a mere sequence or repeat of events, this dissertation focuses on critical points of grounding for a new beginning as well as powerful metaphorical effects of practice, which defy essentialist discourses and raise possibilities of an alternative discursive space. Drawing upon a range of textual examples, the study critically examines not only the workings of prevailing norms but also the ways in which transgressive desire and practice enable marginalized characters to become ‘bodies that matter’ rather than being banished to the ‘abject zone.’ This dissertation reflects a complex intertwining of postcolonial, sexuality and gender, feminist, and cultural studies vis-à-vis transgression and agency. Therefore, the arguments made in this study represent an array of ideas drawn from various disciplines and discourses, especially from theorists such as Michel Foucault, Homi Bhabha, Judith Butler, Gayatri Spivak, Edward Said, Bill Ashcroft, Mikhail Bakhtin, and Jacques Lacan. This hybrid approach puts essentialist discourses—mediated by colonial history and postcolonial reality—under scrutiny to rethink the question of power and agency in exploring the possibility of subaltern others’ transformation into subjects of their own history and experience in specific contexts. By arguing the importance of the strategic use of essentialism based on everyday practice, I also emphasize the need to problematize the hegemonic concept of history so as to trace reterritorialization and repossession on the part of the silenced or invisible who live on borrowed time in minimal space. The highlight of this research is to explore how the established boundaries are expanded, redefined and redrawn in the circulatory, recursive structure of transgression and protest, opening the way for transforming oppression or abjection into agency. With this critical lens in mind, I heed the dynamics of similarity and difference in the narrative as a framework of postcolonial critique to provide a new reading of postcolonial texts.
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Van, Buiten Christopher (Christopher Payne) 1966. "Putting your customers to work : the design of Internet environments to facilitate customer participation in the conceptual design of new products". Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9760.
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Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, February 1999.Includes bibliographical references (leaves 135-137).
An architecture for a new customer interface tool is proposed ·which facilitates the customer's participation in the conceptual design of new products. Customer design activities including geometry manipulation, feature selection, allocation of constrained attributes and design comparison .:ire combined to enable customers to explore a defined solution space to identify solutions which maximize their utility. The tool provides a means of communication between a customer with a rich knowledge of need'i but having weak design skills and a new product designer armed with strong design skills but a knowledge of only the most codified of customer needs. When provided with an easy to use design tool based on use relevant language, the customer can perform a large number of the design iterations typical of the multi-attribute, high bandwidth conceptual design phase. Conjoint analysis is proposed to expand understanding of customer needs at design points surrounding the maximum utility solution idemified by customer design activities. The Internet with rapidly expaning bandwidth and new graphical tools is shown to be a very effective medium for customer design. the assitability of customer design across differential product and customer types is explored. Customer design is identified as a tool to support the rapidly growing trend of mass customization.
by Christopher Van Buiten.
S.M.