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Neirac, Lucie. "Learning with a linear loss function : excess risk and estimation bounds for ERM and minimax MOM estimators, with applications". Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAG012.
Pełny tekst źródłaCommunity detection, phase recovery, signed clustering, angular group synchronization, Maxcut, sparse PCA, the single index model, and the list goes on, are all classical topics within the field of machine learning and statistics. At first glance, they are pretty different problems with different types of data and different goals. However, the literature of recent years shows that they do have one thing in common: they all are amenable to Semi-Definite Programming (SDP). And because they are amenable to SDP, we can go further and recast them in the classical machine learning framework of risk minimization, and this with the simplest possible loss function: the linear loss function. This, in turn, opens up the opportunity to leverage the vast literature related to risk minimization to derive excess risk and estimation bounds as well as algorithms to unravel these problems. The aim of this work is to propose a unified methodology to obtain statistical properties of classical machine learning procedures based on the linear loss function, which corresponds, for example, to the case of SDP procedures that we look as ERM procedures. Embracing a machine learning view point allows us to go into greater depth and introduce other estimators which are effective in handling two key challenges within statistical learning: sparsity, and robustness to adversarial contamination and heavy-tailed data. We attack the structural learning problem by proposing a regularized version of the ERM estimator. We then turn to the robustness problem and introduce an estimator based on the median of means (MOM) principle, which we call the minmax MOM estimator. This latter estimator addresses the problem of robustness and can be constructed whatever the loss function, including the linear loss function. We also present a regularized version of the minmax MOM estimator. For each of those estimators we are able to provide excess risk and estimation bounds, which are derived from two key tools: local complexity fixed points and curvature equations of the excess risk function. To illustrate the relevance of our approach, we apply our methodology to five classical problems within the frame of statistical learning, for which we improve the state-of-the-art results
Faghihirad, Shervin. "Modelling of flows through hydraulic structures and interaction with sediment". Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/62107/.
Pełny tekst źródłaMihalyi, Agnes. "Screening for novel inhibitors of phospho-MurNAc-pentapeptide translocase MraY". Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/62707/.
Pełny tekst źródłaIgnasiak, Katarzyna. "Investigating antimicrobial resistance in the gut bacteria of insects feeding on plants". Thesis, University of East Anglia, 2016. https://ueaeprints.uea.ac.uk/62307/.
Pełny tekst źródłaPribadi, Aaron. "Algebraic Methods for Log-Linear Models". Scholarship @ Claremont, 2012. https://scholarship.claremont.edu/hmc_theses/41.
Pełny tekst źródłaDonald, Claire Louisa. "Development of molecular tools to enhance understanding of antiviral RNAi in mosquitoes". Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6207/.
Pełny tekst źródłaKausar, Nighat. "Experimental spectroscopic and theoretical studies of amino acid derivatives". Thesis, University of Greenwich, 2008. http://gala.gre.ac.uk/6207/.
Pełny tekst źródłaScott, Ian Alexander. "Studies on seasonal variation in metabolic rate related to changes in body composition with particular reference to shorebirds (Charadrii)". Thesis, Durham University, 1992. http://etheses.dur.ac.uk/6207/.
Pełny tekst źródłaScarpino, A. L. "Pain body : writing at the intersection of elegy and witness". Thesis, Bath Spa University, 2014. http://researchspace.bathspa.ac.uk/6207/.
Pełny tekst źródłaRizzo, Stefano Giovanni. "Una base dati per il knowledge discovery in genetica medica". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6207/.
Pełny tekst źródłaMiserocchi, Anna <1983>. "Analisi dei meccanismi patogenetici alla base del danno vascolare Hiv-indotto". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6207/.
Pełny tekst źródłaHIV-1 infection remains nowadays a major problem of health worldwide. The introduction of a combined antiretroviral therapy (cART) has greatly improved life expectancy of HIV-infected patients. However, cART cannot eradicate the infection and HIV-infected patients show different comorbidities, like central nervous system lesions, osteoporosis, renal and liver dysfunction and cardiovascular pathologies. Cardiovascular damages come from viral mechanisms and pharmacological interactions and their frequency is enhanced in HIV-positive patients. Mesenchymal stem cells (MSC) are very important for endothelial homeostasis, therefore we decided to analyze the effects of HIV and cART in these cells. Our results show that HIV-1 and its proteins gp120 and Tat increase MSC apoptosis and alter MSC differentiation towards endothelial and adipogenic lineages. Moreover, also antiretroviral molecules, in particular protease inhibitors, disrupt MSC differentiation regulation.
Vincart-Emard, Alexandre. "Numerical investigation of spatial inhomogeneities in gravity and quantum field theory". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62607.
Pełny tekst źródłaScience, Faculty of
Physics and Astronomy, Department of
Graduate
Cheung, Walden A. "Selecting quality indicators for pulmonary rehabilitation programs in Canada : a modified RAND Appropriateness Method study". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62807.
Pełny tekst źródłaMedicine, Faculty of
Graduate
Laver, Christopher R. J. "Ocular tissue engineering : rebuilding the retina with stem cells". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62907.
Pełny tekst źródłaMedicine, Faculty of
Experimental Medicine, Division of
Medicine, Department of
Graduate
Kaya, Firat Ayse. "Early growth technology analysis : case studies in solar energy and geothermal energy". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62107.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 85-87).
Public and private organizations try to forecast the future of technological developments and allocate funds accordingly. Based on our interviews with experts from MIT's Entrepreneurship Center, Sloan School of Management, and IBM, and review of literature, we found out that this important fund allocation process is dominated by reliance on expert opinions, which has important drawbacks alongside its advantages. In this Thesis, we introduce a data-driven approach, called early growth technology analysis, to technology forecasting that utilizes diverse information sources to analyze the evolution of promising new technologies. Our approach is based on bibliometric analysis, consisting of three key steps: extraction of related keywords from online publication databases, determining the occurrence frequencies of these keywords, and identifying those exhibiting rapid growth. Our proposal goes beyond the theoretical level, and is embodied in software that collects the required inputs from the user through a visual interface, extracts data from web sites on the fly, performs an analysis on the collected data, and displays the results. Compared to earlier software within our group, the new interface offers a much improved user experience in performing the analysis. Although these methods are applicable to any domain of study, this Thesis presents results from case studies on the fields of solar and geothermal energy. We identified emerging technologies in these specific fields to test the viability of our results. We believe that data-driven approaches, such as the one proposed in this Thesis, will increasingly be used by policy makers to complement, verify, and validate expert opinions in mapping practical goals into basic/applied research areas and coming up with technology investment decisions.
by Ayse Kaya Firat.
S.M.in Technology and Policy
Lovell, Nathan Gary. "Control of size and charge selectivity in amphiphilic graft copolymer nanofiltration membranes". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62607.
Pełny tekst źródłaThis 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 (p. 99-106).
The throughput and efficiency of membrane separations make polymer filtration membranes an important resource for the pharmaceutical, food and wastewater treatment industries. Nanofiltration (NF) membranes fill an important niche between nonporous reverse osmosis membranes, which have comprehensive solute rejection and low solvent permeability, and porous sieving ultrafiltration membranes. However, challenges in NF membrane design remain outstanding. At the effective pore size of NF membranes (~0.5 nm-2 nm), both electrostatic and steric factors determine membrane selectivity. Most NF membranes are charged under a wide range of environmental conditions and thus preferentially exclude charged solutes. This charge selectivity precludes separation of molecules based solely on size. An additional limitation of NF membranes is the tendency to foul by adsorption of feed components. The purpose of this thesis is to demonstrate control of membrane selectivity in fouling resistant membranes via manipulation of the chemistry of a specific copolymer system, polyacrylonitrile (PAN)-based poly(ethylene oxide) (PEO) graft polymers. Previous work with amphiphilic graft copolymers as membrane materials has included PANg- PEO with an average graft length of 9 (PAN-g-PEO9). PAN-g-PEO9 was shown to have excellent fouling resistance as an antifouling additive in porous ultrafiltration membranes and as a dense selective layer coated onto a support base membrane-a thin-film composite (TFC) NF membrane. The comb morphology of the polymer imposes high interfacial area on the microphase-separated domains, resulting in a bicontinuous structure consisting of a glassy PAN matrix interpenetrated by PEO-filled "nanochannels" that can act as vias for water and small solutes (with a size cutoff of ~0.8 nm). It also presents a PEO brush on the comb surface which acts as a steric barrier to resist irreversible fouling of the membranes. The understanding from previous work on PEO comb NF membranes is that the pore size is determined by the nanochannel's size, i.e. the PEO domain size. Because the graft characteristics (spacing and length) of comb copolymers determine the domain size, it was expected that varying the graft length would allow broad, precise control of the size cutoff of the TFC membranes, a concept demonstrated previously with amphiphilic graft copolymer NF membranes of poly(vinylidene fluoride)-graft-poly(oxyethylene methacrylate) (PVDF-g-POEM). The first aim of this thesis was to tailor the retention properties of PAN-g-PEO TFC NF membranes by modifying the chemistry to tune the electrostatic and steric properties sufficiently to enable complex separations, particularly of solutes with high fouling potential. Comb copolymers incorporating ~40 weight % PEO with side chains varying from 5-40 EO units were synthesized by free radical methods and compared as selective-layer coatings on PAN UF membranes. 3 Membranes incorporating combs with 9 EO units or more were shown to resist irreversible fouling when challenged by a model protein feed solution (bovine serum albumin) for 24 hours. Fouling resistance was found to be compromised, however, upon exposure to acid (pH 2) solution, used to simulate chemical cleaning procedures in industry. Thickness-normalized permeabilities of these PAN-g-PEOn NF membranes exceeded those of commercially available NF membranes by approximately an order of magnitude. A systematic effect of side chain length on permeability was seen when varying temperature, ionic strength, and pressure. Contrary to expectations, the membrane size cutoff (~0.8 nm) for charged rigid molecular probes in deionized water was independent of the comb side chain length. This new finding can be explained by modeling the hydrophilic domains as opposing swollen polymer brushes of uniform density acting as a physical gel. The gel mesh size (distance between chains) is independent of side chain length, and controls the size cutoff in good solvent conditions matching those in which the membrane was equilibrated during fabrication. In poorer solvent conditions, a decrease in the brush height, progressing to complete collapse of the PEO gel, can be expected to create differentiation based on domain size (i.e. side chain length). This is consistent with the finding that retentions of dyes increased with decreasing side chain length in saline solution, as salt is known to reduce PEO-water miscibility. Fluorescently labeled peptides germane to proteomics research were filtered and both chromatographic and size-selective membrane behavior was observed-the first demonstration of size-based nanofiltration of peptides. Based on this finding, two different peptides of molecular weights 1.3kDa and 1.5kDa were fractionated to achieve a six-fold increase in the concentration of the larger peptide relative to the smaller peptide in two filtration steps. The electrostatic selectivity of the PEO comb membranes could also be varied. Terpolymers consisting of PAN-g-PEO with 1-2% charged sulfopropyl acrylate (SPA) or 5% N,Ndimethyl- N-(2-methacryloyloxyethyl-N-(3-sulfopropyl) ammonium betaine (SPE) were synthesized and coated onto PAN base membrane. The divalent salt (Na2SO4) retention of the resulting TFC membranes increased from ~20% for the PAN-g-PEO copolymer to ~45% and 82% for the SPE and SPA terpolymers, respectively. Retention of monovalent NaCl was substantially lower, characteristic of commercial NF membranes. The charged comb membranes did not completely resist fouling by a 1 g/L BSA solution, losing 2% of the initial flux after 24 h exposure. Forming a trilayer TFC, with a layer of PAN-g-PEO coated over a charged terpolymer, reduced membrane fouling compared to the charged layer alone. In summary, the goal of this study was to demonstrate control of membrane selectivity in fouling-resistant PAN-g-PEO NF membranes. An important finding was that the PEO gel created in the hydrophilic domains leads to similar size cutoffs over a wide range of side chain length. To access the desired spectrum of size cutoffs, the quality of solvent for the swollen PEO brush must be reduced. In spite of these limitations, the membrane was shown to have useful fractionating properties as demonstrated with labeled peptides of varying molecular weight. The retention of salts was enhanced by incorporating small amounts of charged monomer into the comb backbone, but at the expense of fouling resistance.
by Nathan Gary Lovell.
Ph.D.
Wongso, Ricolas. "An application of Value Stream Mapping to reduce lead time and WIP in a make-to-order manufacturing line". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62507.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 57).
Significant growth in the sales is expected in the coming years for the product family that is the focus of this research. In order to meet the takt time for the future demand, improvement on the current processes and expansion are needed. In this work, Value Stream Mapping was implemented to identify the bottleneck processes: fit up (oval), full welding, and pressure testing. Assembly cell concept, workload balancing and FIFO lanes were proposed countermeasures or improvements to address the capacity shortfall. A decrease of 27% in manufacturing lead time was projected if these improvements were made. In addition, the capacity analysis suggests that an expansion is required in full welding and heat treatment furnace.
by Ricolas Wongso.
M.Eng.
Dougherty, Tom (Tom J. ). "Help! not just anybody : essays on altruism and conflicts of interest". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62407.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 54-56).
If you can help someone without detriment to your interest, nor anyone else's interest, then it is clear that you ought to do so. But things are not always so easy. When there is a conflict of interest, you have to decide what to do. Whom should you help when you cannot help everyone? How much should you sacrifice to help others? May you expose people to risks when helping them? This dissertation addresses aspects of these questions. You ought to save a larger group of people rather than a distinct smaller group of people, all else equal. Why? Chapter 1, "Rational Numbers," offers an explanation. Its two parts can be roughly summarized as follows. First, you are morally required to want each person's survival for its own sake. Second, you are rationally required to achieve as many of these ends as possible, if you have these ends. Chapter 2, "Ambition and Altruism in the Dynamic Moral Life," poses a puzzle. We would like an account of beneficence to be moderately demanding, and yet still to require you to be ambitious with your altruism. How can these diverging desiderata be simultaneously met? Drawing on empirical work, the chapter defends the following solution: beneficence requires you to develop morally, and increase how much you give over time. Chapter 3, "Chancy Charity and Aggregative Altruism," argues that two initially attractive claims are inconsistent. First, you must save someone's life rather than cure the headaches of many. Second, you may take a small risk of someone's death when curing this person's headache. Since we are unable to hold both these claims, we are in danger of lacking an explanation of some common intuitions about risk and the priority of serious needs. A candidate explanation is considered, but criticized.
by Tom Dougherty.
Ph.D.
Allemann, Frank von Arx. "Swedish institutional investors : potential role in U.S. real estate in the next five years". Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/62907.
Pełny tekst źródłaPrabhat, Naveen. "Critical evaluation of anomalous thermal conductivity and convective heat transfer enhancement in nanofluids". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62707.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 100-111).
While robust progress has been made towards the practical use of nanofluids, uncertainties remain concerning the fundamental effects of nanoparticles on key thermo-physical properties. Nanofluids have higher thermal conductivity and single-phase heat transfer coefficients than their base fluids. The possibility of very large thermal conductivity enhancement in nanofluids and the associated physical mechanisms are a hotly debated topic, in part because the thermal conductivity database is sparse and inconsistent. This thesis reports on the International Nanofluid Property Benchmark Exercise (INPBE) in which the thermal conductivity of identical samples of colloidally stable dispersions of nanoparticles, or 'nanofluids', was measured by over 30 organizations worldwide, using a variety of experimental approaches, including the transient hot wire method, steady-state methods and optical methods. The nanofluids tested were comprised of aqueous and non-aqueous basefluids, metal and metal oxide particles, near-spherical and elongated particles, at low and high particle concentrations. The data analysis reveals that the data from most organizations lie within a relatively narrow band (± 10% or less) about the sample average, with only few outliers. The thermal conductivity of the nanofluids was found to increase with particle concentration and aspect ratio, as expected from classical theory. The effective medium theory developed for dispersed particles by Maxwell in 1881, and recently generalized by Nan et al., was found to be in good agreement with the experimental data. The nanofluid literature contains many claims of anomalous convective heat transfer enhancement in both turbulent and laminar flow. To put such claims to the test, we have performed a critical detailed analysis of the database reported in 12 nanofluid papers (8 on laminar flow and 4 on turbulent flow). The methodology accounted for both modeling and experimental uncertainties in the following way. The heat transfer coefficient for any given data set was calculated according to the established correlations (Dittus-Boelter's for turbulent flow and Shah's for laminar flow). The uncertainty in the correlation input parameters (i.e. nanofluid thermo-physical properties and flow rate) was propagated to get the uncertainty on the predicted heat transfer coefficient. The predicted and measured heat transfer coefficient values were then compared to each other. If they differed by more than their respective uncertainties, we called the deviation anomalous. According to this methodology, it was found that in nanofluid laminar flow in fact there seems to be anomalous heat transfer enhancement in the entrance region, while the data are in agreement (within uncertainties) with the Shah's correlation in the fully developed region. On the other hand, the turbulent flow data could be reconciled (within uncertainties) with the Dittus-Boelter's correlation, once the temperature dependence of viscosity was included in the prediction of the Reynolds number. While this finding is plausible, it could not be directly confirmed, because most papers do not report information about the temperature dependence of the viscosity for their nanofluids.
by Naveen Prabhat.
S.M.
Velázquez, Díaz Tifanny, i Díaz Tifanny Velázquez. "Reforma al Artículo 181 de la Ley Agraria". Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2016. http://hdl.handle.net/20.500.11799/62907.
Pełny tekst źródłaGuimarães, Joana Alexandra Carvalho. "Patogénese da artrite idiopática juvenil sistémica. Papel da imunidade inata". Master's thesis, Instituto de Ciências Biomédicas Abel Salazar, 2010. http://hdl.handle.net/10216/62307.
Pełny tekst źródłaPereira, Cátia Marisa Loureiro. "A simulação como metodologia de aquisição de competências na formação médica pré-graduada". Master's thesis, Instituto de Ciências Biomédicas Abel Salazar, 2010. http://hdl.handle.net/10216/62207.
Pełny tekst źródłaDames, Michael Henri. "Factors influencing estuarine and coastal connectivity of an estuarine-dependent fishery species, Pomadasys commersonnii (Haemulidae)". Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/62307.
Pełny tekst źródłaSpohr, Fúlvia da Silva. "Tecendo imagens : operando experiências no plano do "comum"". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/62107.
Pełny tekst źródłaThe main objective of this study is to report how an experience with video technology changed the way the actions were coordinated, the distinctions and emotions are produced in the group of people who work and use the mental health service, o CAPS II Cais Mental Centro/POA. The Image Workshop is a therapeutic activity, in which there are image productions, and they can be transformed into many films. The research focuses on the effects that are trigged through the problematization, concerned to a serie of video images, produced by the group that participated of the Workshop, that were discarded, as well as on the others that were used in the construction of a film. The group was not sure which images could be used in the film. At the Editing Workshop, it was suggested that the discarded images, the nonsense ones, could be used: the ones that were blurred, blur and did not fit in the construction of a video, so we concluded that it was possible to add what was considered firstly something excluded. Editing was performed by the group in the digital image editing, through the Windows Movie Maker. The process trigged many other networks for dialogue, different from the one that was constructed at the Image Workshop inicially, but we cannot consider the former more or less important than the recently produced, they were just seen as new and an opportunity to share experiencies. So, we invit the reader to follow, through the pachwork effect (a narrative resource), the operative replacement that were produced in the Workshops, in the network dialogues. Thus, through a methodological perspective of an intervention research, we present some of the replacement, produced at Editing Image Workshop. The experience that the participants of the group had with the computer, the editing and discarted images, changed the networks for dialogue, that were performed in the action and while the images were produced, so that they develop social inclusion, authorship and the construction of many other ways to deal with health/mental illness, building a new plan of sharing and also political, when many experiences were operated in a level whose experience were shared by all the participantes.
Nabbosa, Racheal. "Assessing the use of journals and formats preferred by postgraduate students of Makerere University". Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/62107.
Pełny tekst źródłaMini Dissertation (MIT)--University of Pretoria, 2015.
Information Science
MIT
Unrestricted
van, der Walt Rhyno Lambertus Reyneke. "Photovoltaic based distributed generation power system protection". Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/62807.
Pełny tekst źródłaDissertation (MEng)--University of Pretoria, 2017.
Electrical, Electronic and Computer Engineering
MEng
Unrestricted
Sutton, Sindi. "Communicative dispositions of Foundation Phase Afrikaans-speaking teachers using English as medium of instruction". Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/62907.
Pełny tekst źródłaDissertation (MEd)--University of Pretoria, 2017.
Humanities Education
MEd
Unrestricted
Silvestre, Navarro Francisco Miguel. "PENSADO A MANO, FABRICADO EN SERIE. Pioneros del Diseño Industrial. Transformación y adaptabilidad de las profesiones creativas". Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/62207.
Pełny tekst źródła[ES] La consolidación de la figura del diseñador industrial en Estados Unidos durante las décadas centrales del siglo XX es el tema que suscita la presente investigación. Este proceso supone la transición entre artesanía e industria que había comenzado siglos atrás. Los diseñadores americanos se especializaron en una nueva profesión, pusieron en marcha una inteligencia compartida y multidisciplinar. Quizás sin saberlo fueron pioneros en desdibujar los límites entre las disciplinas creativas. Es un valioso modelo de transformación y adaptabilidad del que se pueden extraer conclusiones y paralelismos con la época actual, un ejemplo con el que poder preparar y entender la aceleración producida por la tercera revolución industrial, y los cambios que produce en las profesiones creativas. Siempre han existido, de forma más o menos artesanal, maneras para producir en serie todo lo que nos rodea, desde los objetos más cotidianos hasta las arquitecturas. Pero es la segunda revolución industrial, con la aparición del Taylorismo y la revolución Ford, la que mediante nuevas máquinas y la sistematización de los procesos de fabricación introducen un punto de inflexión en este avance. En Europa se sucedieron instituciones, escuelas y movimientos como las Arts and Crafts, se establecieron colectivos y asociaciones como los Wiener Werkstätte y las Werkbunds y posteriormente se constituyó la Bauhaus, conectados todos ellos y que influyeron en parte en la evolución del diseño en la joven nación norteamericana. En Estados Unidos se dio un contexto excepcional: un mercado unido con unas dimensiones sin precedentes, una sociedad con un confort técnico novedoso en energías, materiales y medios de comunicación dieron lugar a un modo de vida, The american way of life, con sus luces y sus sombras. Fue la distancia justa de la tradición europea uno de los elementos que favoreció la consolidación del Diseño Industrial como profesión en territorio norteamericano. La singularidad histórica radica en que el nivel de especialización técnica había aumentado hasta hacer que los conocimientos para producir un bien excedieran la capacidad de una persona. Los pioneros del diseño americano coordinaban el trabajo de equipos multidisciplinares formados por ingenieros, arquitectos, fabricantes, publicistas¿ a la vez que acompañaban al producto hasta el proceso de comunicación, animados por las necesidades de las grandes compañías. Esto les permitió trabajar en una variedad de proyectos que no sucedía de forma tan amplia desde los notables ejemplos del Renacimiento. Trabajaron en campos como el diseño gráfico, el diseño industrial, diseño de interiores, diseño arquitectónico, diseño urbanístico, diseño automovilístico, diseño de ferrocarriles, diseño naval, diseño aeronáutico¿ incluso diseño aeroespacial, generando nuevos tipos y ampliando el espectro de sus trabajos. Los diseñadores más relevantes de esta época fueron Raymond Loewy, Norman Bel Geddes, Walter Dorwin Teague y Henry Dreyfuss, procedentes del mundo de la escenografía, la ilustración y el escaparatismo. Guiados por la intuición de la belleza ayudaron a la industria a partir de la década de 1920. Hablar del nacimiento del Diseño industrial supone profundizar en las relaciones entre arte e industria, entre el hombre y la máquina. Nos invita a plantearnos preguntas que inventen lo que está por venir.
[CAT] La consolidació de la figura del dissenyador industrial als Estats Units durant les dècades centrals del segle XX és el tema que suscita la present investigació. Aquest procés suposa la transició entre artesania i indùstria que havia començat segles arrere. Els dissenyadors americans es van especialitzar en una nova professió, van posar en funcionament una intel¿ligència compartida i multidisciplinar. Tal vegada, sense saber-ho, van ser pioners en desdibuixar els límits entre les disciplines creatives. És un valuós model de transformació i adaptabilitat del que es poden extraure conclusions i paral¿lelismes amb l'època actual, un exemple amb el què poder preparar i entendre l'acel¿leració produïda per la tercera revolució industrial, i els canvis que produeix amb les professions creatives. Sempre han existit, de forma més o menys artesanal, maneres per a produïr en sèrie tot allò que ens envolta, des de els objectes més quotidians, fins a les arquitectures. Però és la segona revolució industrial, amb el sorgiment del taylorisme i la revolució Ford, la que, mitjançant noves màquines i la sistematització dels processos de fabricació, introdueixen un punt d'inflexió en aquest avançament. A Europa es van succeïr institucions, escoles i moviments com les Arts and Crafts, es van establir col¿lectius i associacions com els Wiener Werkstätte i les Werkbunds, i posteriorment es va constituir la Bauhaus, connectats tots ells i que van influir en part en la evolució del disseny a la jove nació nordamericana. Als Estats Units es va donar un context excepcional: un mercat unit amb unes dimensions sense precedents, una societat amb un comfort tècnic novedós en energies, materials i mitjans de comunicació van donar lloc a un estil de vida, The american way of life, amb les seues llums i les seues ombres. Va ser la distància justa de la tradició europea un dels elements que va afavorir la consolidació del Disseny Industrial com a professió en territori nordamericà. La singularitat històrica radica en què el nivell d'especialització tècnica havia augmentat fins a fer que els coneixements per a produïr un bé excediren la capacitat d'una persona. Els pioners del disseny americà coordinaven el treball d'equips multidisciplinars formats per enginyers, arquitectes, fabricants, publicistes¿ a la vegada què acompanyaven el producte fins al procés de comunicació, recolzats per les necessitats de les grans companyies. Allò els va permetre treballar en una varietat de projectes que no succeïa de forma tan ampla des dels notables exemples del Renaixement. Van treballar en camps com el disseny gràfic, el disseny industrial, disseny d'interiors, disseny arquitectònic, disseny urbanístic, disseny automovilístic, disseny de ferrocarrils, disseny naval, disseny aeronàutic¿ inclús disseny aeroespacial, generant nous tipus i ampliant l'espectre dels seus treballs. Els dissenyadors més destacats d'aquesta època van ser Raymond Loewy, Norman Bel Geddes, Walter Dorwin Teague i Henry Dreyfuss, procedents del món de l'escenografia, la il¿lustració i l'escaparatisme. Guiats per la intuició de la bellessa, van ajudar a la indùstria a partir de la dècada de 1920. Parlar del naixement del Disseny Industrial suposa aprofundir en les relacions entre art i indùstria, entre l'home i la màquina. Ens convida a plantejar-nos preguntes que inventen allò que està per vindre.
Silvestre Navarro, FM. (2016). PENSADO A MANO, FABRICADO EN SERIE. Pioneros del Diseño Industrial. Transformación y adaptabilidad de las profesiones creativas [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/62207
TESIS
Calvo, Lance Marcos. "A Strategy for Multilingual Spoken Language Understanding Based on Graphs of Linguistic Units". Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/62407.
Pełny tekst źródła[ES] En esta tesis se aborda el problema de la comprensión multilingüe del habla utilizando grafos para modelizar y combinar las diversas fuentes de conocimiento que intervienen en el proceso. Como resultado se ha desarrollado un sistema completo de comprensión multilingüe que utiliza modelos estadísticos y grafos de unidades lingüísticas. El punto fuerte de este sistema es su capacidad para combinar y procesar múltiples entradas proporcionadas por una o varias fuentes, como reconocedores de habla o traductores automáticos. Como punto de partida se desarrolló un sistema de comprensión multilingüe basado en grafos. La entrada a este sistema es un conjunto de frases obtenido a partir de uno o varios reconocedores de habla. En primer lugar, se aplica un algoritmo de inferencia gramatical que combina estas frases y obtiene un grafo de palabras. A continuación, se analiza el grafo de palabras mediante un algoritmo de programación dinámica que identifica las estructuras léxicas correspondientes a los distintos conceptos de la tarea, de forma que se construye un grafo de conceptos. Finalmente, se procesa el grafo de conceptos para encontrar la mejo secuencia de conceptos. El caso multilingüe ocurre cuando el usuario habla una lengua distinta a la original del sistema. En este trabajo se ha utilizado una estrategia test-on-source, en la cual las frases de entrada se traducen al lenguaje del sistema y éste las trata de forma monolingüe. Para ello se han propuesto dos sistemas de traducción del habla cuya salida son grafos de palabras, los cuales son procesados por el algoritmo de comprensión basado en grafos. Tanto en la configuración monolingüe como en la multilingüe los resultados muestran que la combinación de varias entradas permite mejorar los resultados obtenidos con una sola entrada. De hecho, esta aproximación consigue en muchos casos mejores resultados que el actual estado del arte cuando se utiliza una combinación de varias entradas.
[CAT] Aquesta tesi tracta el problema de la comprensió multilingüe de la parla utilitzant grafs per a modelitzar i combinar les diverses fonts de coneixement que intervenen en el procés. Com a resultat s'ha desenvolupat un sistema complet de comprensió multilingüe de la parla que utilitza models estadístics i grafs d'unitats lingüístiques. El punt fort d'aquest sistema és la seua capacitat per combinar i processar múltiples entrades proporcionades per una o diverses fonts, com reconeixedors de la parla o traductors automàtics. Com a punt de partida, es va desenvolupar un sistema de comprensió monolingüe basat en grafs. L'entrada d'aquest sistema és un conjunt de frases obtingut a partir d'un o més reconeixedors de la parla. En primer lloc, s'aplica un algorisme d'inferència gramatical que combina aquestes frases i obté un graf de paraules. A continuació, s'analitza el graf de paraules mitjançant un algorisme de programació dinàmica que identifica les estructures lèxiques corresponents als distints conceptes de la tasca, de forma que es construeix un graf de conceptes. Finalment, es processa aquest graf de conceptes per trobar la millor seqüència de conceptes. El cas multilingüe ocorre quan l'usuari parla una llengua diferent a l'original del sistema. En aquest treball s'ha utilitzat una estratègia test-on-source, en la qual les frases d'entrada es tradueixen a la llengua del sistema, i aquest les tracta de forma monolingüe. Per a fer-ho es proposen dos sistemes de traducció de la parla l'eixida dels quals són grafs de paraules. Aquests grafs són posteriorment processats per l'algorisme de comprensió basat en grafs. Tant per la configuració monolingüe com per la multilingüe els resultats mostren que la combinació de diverses entrades és capaç de millorar el resultats obtinguts utilitzant una sola entrada. De fet, aquesta aproximació aconsegueix en molts casos millors resultats que l'actual estat de l'art quan s'utilitza una combinació de diverses entrades.
Calvo Lance, M. (2016). A Strategy for Multilingual Spoken Language Understanding Based on Graphs of Linguistic Units [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/62407
TESIS
Guimarães, Joana Alexandra Carvalho. "Patogénese da artrite idiopática juvenil sistémica. Papel da imunidade inata". Dissertação, Instituto de Ciências Biomédicas Abel Salazar, 2010. http://hdl.handle.net/10216/62307.
Pełny tekst źródłaPereira, Cátia Marisa Loureiro. "A simulação como metodologia de aquisição de competências na formação médica pré-graduada". Dissertação, Instituto de Ciências Biomédicas Abel Salazar, 2010. http://hdl.handle.net/10216/62207.
Pełny tekst źródłaКожихова, К. В. "Синтез новых носителей лекарственных веществ на основе полисахаридов и фосфолипидов : диссертация на соискание ученой степени кандидата химических наук : 02.00.03". Thesis, б. и, 2018. http://hdl.handle.net/10995/62607.
Pełny tekst źródłaSkrataas, Stine Mia Rømmesmo. "Compressible flows in process equipment: Problems, methods and models". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13685.
Pełny tekst źródłaKoch, Martin Andreas. "Development of in vitro and in vivo Bioreactors for Bone Tissue Engineering". Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/6207.
Pełny tekst źródłaEn este trabajo, dos sistemas de bioreactores fueron desarrollados para permitir comprender las propiedades bioactivas de andamios de diferentes materiales y la mecanoregulación del comportamiento de células o tejidos. Un sistema de bioreactor de perfusión in vitro fue desarrollado para el sembrado y cultivo de células incorporadas en cilindros de un biomaterial poroso. Varios estudios para la determinación de los parámetros del sembrado de células aplicable se llevaron a cabo, así como experimentos de cultivo de células bajo flujo de fluido constante con una estimulación mecánica adicional por alternancia del flujo.
Un sistema de cámara ósea fue desarrollado como un bioreactor in vivo. El sistema produjo un defecto óseo grande en tibias de perros y permitió la implantación repetida de grandes andamios porosos de materiales diferentes. El tejido creciendo en los andamios permite extraer conclusiones sobre las propiedades de osteoconductividad u osteinductividad de los andamios. Además, un dispositivo de compresión se ha desarrollado para aplicar cargas cíclicas en los andamios en vivo para estudiar el efecto de la estimulación mecánica en el desarrollo de los tejidos.
Los estudios con el sistema de perfusión desarrollado han demostrado que el sembrado de células en grandes andamios porosos es posible, lo que se considera crucial para el cultivo celular. El largo tiempo de cultivo de células mostró la proliferación de las células madre mesenquimales hasta dos semanas. El patrón de estimulación utilizado en el estudio aumentó la expresión de la osteocalcina, lo que indica una mayor actividad de las células, pero la ausencia de expresión de RunX2 y colágeno I impidió la determinación concluyente de la diferenciación.
El sistema desarrollado de la cámara ósea demostró su funcionalidad en el entorno quirúrgico durante los experimentos in vivo. Complicaciones durante los experimentos no permitieron la aplicación de las cargas cíclicas de los andamios implantados. La formación de hueso retrasada debido al defecto óseo creado y material de andamios restantes no permitieron conclusiones definitivas acerca de las propiedades del material del andamio. Sin embargo, el estudio proporciona datos para el desarrollo futuro del dispositivo y protocolo clínico.
Los estudios realizados constituyen una novedad en respecto a la creación de bioreactores para el estudio de la andamios porosos sintéticos de grandes dimensiones in vitro e in vivo. Los sistemas desarrollados constituyen la base para otros estudios en mecanobiología de las células óseas y los tejidos.
Large bone defects constitute a challenge for the clinical field, because they cannot be repaired by the body itself, but require the implantation of suitable bone grafts. To overcome the drawbacks of grafts from autologous or allogous sources, modern bone tissue engineering aims to replace lost tissue by cultivating cells in vitro on porous biomaterials. The cell culture on large porous scaffolds has shown to be difficult, requiring bioreactors, which are used for tissue culture and the study of cell behaviour in 3D scaffolds. Of special interest is the mechanical conditioning of the cultured tissue for bioreactor-based bone tissue engineering, which is able to enhance the osteogenic potential of the synthetic grafts.
In this work two bioreactor systems were developed to allow insight into bioactive properties of different scaffold materials and the mechanoregulation of cell or tissue behaviour. An in vitro perfusion bioreactor system was developed for the cell seeding and culture on porous biomaterial cylinders. Several studies for the determination of applicable cell seeding parameters were conducted, as well as experiments of cell culture under steady fluid flow with additional mechanical stimulation by alternating fluid flow. A bone chamber system was developed as an in vivo bioreactor. The system produced a large bone defect in dog tibia and allowed the repeated implantation of large porous scaffolds of different material compositions.
The ingrowing tissue was observed to allow conclusions about osteoconductive or osteinductive properties of the scaffolds. Additionally a compression device was developed to apply cyclic loading on the scaffolds in vivo to study the effect of mechanical stimulation on tissue development.
The studies with the developed in vitro perfusion bioreactor system have shown that it is possible to seed cells throughout large porous scaffolds, which is deemed crucial for the further cell culture. The long time cell culture showed the proliferation of mesenchymal stem cells up to two weeks. The stimulation pattern used in the study enhanced the expression of osteocalcin, indicating an enhanced cell activity, but the absence of RunX2 and collagen I expression rendered the determination of differentiation inconclusive.
The developed bone chamber system proved to be functional in the surgical environment during the in vivo experiments. Occurring complications during the experiments did not allow the application of the cyclic loading of implanted scaffolds. Delayed bone formation due to created bone defect and remaining scaffold material did not allow final conclusions about the scaffold material properties. Nevertheless the study provides input for further development of the device and clinical protocol.
The conducted studies constitute a novelty regarding the creation of bioreactors for the study of synthetic porous scaffolds of large dimensions in vitro and in vivo. The developed systems form the basis for further studies in mechanobiology of bone cells and tissue.
Kagaya, Mieko, Nayumi Iwata, Yasushi Toda, Takahiro Mitsui, Yasuyuki Nakae i Takaharu Kondo. "Cold Milk Accelerates Oro-Cecal Transit Time During the Luteal Phasebut not the Follicular Phase in Women". 名古屋大学医学部, 1999. http://hdl.handle.net/2237/6207.
Pełny tekst źródłaCheung, Michael B. "Respiratory Syncytial Virus-infected Mesenchymal Stem Cells Regulate Immunity via Interferon-beta and Indoleamine-2,3-dioxygenase". Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6207.
Pełny tekst źródłaDesjardins, Steven J. "Image analysis in Fourier space". Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6207.
Pełny tekst źródłaFarner, William Robert. "On-chip probe metrology /". Online version of thesis, 2008. http://hdl.handle.net/1850/6207.
Pełny tekst źródłaWang, Chao. "The relationship between traffic congestion and road accidents : an econometric approach using GIS". Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6207.
Pełny tekst źródłaImhof, Ingrid. "Development of an intra- and intergenotypic HCV cell culture method to phenotype and assess antiviral susceptibilities and resistance development of HCV NS3 protease genes from HCV genotypes 1-6". Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/6207.
Pełny tekst źródłaMorton, Amba Jessida. "Invisible Episteme - The Mirrors and String of Modernity". Thesis, University of Canterbury. Social and Political Sciences, 2011. http://hdl.handle.net/10092/6207.
Pełny tekst źródłaRichard, Jean-Philippe. "Fabrication de transistors monoélectroniques pour la détection de charge". Mémoire, Université de Sherbrooke, 2013. http://hdl.handle.net/11143/6207.
Pełny tekst źródłaRibeiro, Ana Margarida de Bastos. "Approach, management and prediction of prognosis in the acute abdomen syndrome in dogs. Study of prognosis predictors in 28 cases". Master's thesis, Universidade de Lisboa. Faculdade de Medicina Veterinária, 2013. http://hdl.handle.net/10400.5/6207.
Pełny tekst źródłaThe acute abdomen syndrome is characterized by an acute onset of abdominal pain, usually associated with general signs such as vomiting, diarrhoea, postural and gait changes, anorexia, lethargy and shock. Success results from a proactive approach to management, including rapid stabilization of major body systems, early identification of the inciting problem(s), attention to comorbid conditions, and timely definitive therapy. Herewith comes decision making, whether to take a patient to surgery or manage the patient medically. A thorough and systematic approach requires the use of diagnostic imaging modalities, including radiology and ultrasonography, performing diagnostic peritoneal lavage or abdominal paracentesis techniques, and blood work evaluation, including complete blood count and biochemistry profiles. In some cases, the results of diagnostic tests may lead to surgical versus medical management, particularly when a patient fails to respond to medical management alone. In other cases, rapid surgical management is necessary for patient survival. Also it must take into account the capabilities and equipment of the clinic, as well as the staff skills. This may be extremely effortful, time-consuming and expensive so the owners must be informed about the prognosis for survival as they frequently face the dilemma of euthanasia. In an attempt to make more valid prognostic assessment in cases of acute abdomen syndrome, many individual predictive factors and univariable analysis where investigated. A retrospective study was carried out on 28 dogs presented with acute abdomen. Medical records were reviewed and information regarding dog signalment, history, clinical and laboratory data, surgical findings and outcome was collected. After analysis, several easily measurable parameters were found to be outcome predictors in dogs with acute abdomen, these being creatinine and alkaline phosphatase values, skin tent evaluation and dehydration.
RESUMO - ABORDAGEM, MANEIO E PREVISÃO DE PROGNÓSTICO NA SÍNDROME DE ABDÓMEN AGUDO EM CÃES. ESTUDO DE PREVISORES DE PROGNÓSTICO EM 28 CASOS - A síndrome de abdómen agudo é caracterizada por dor abdominal de início repentino, normalmente associada a sinais clínicos gerais tais como vómito, diarreia, alterações de postura e equilíbrio, anorexia, letargia e choque. O sucesso na resolução desta síndrome resulta de uma abordagem proactiva ao maneio médico, incluindo estabilização rápida dos sistemas vitais, rápida identificação, atenção a situações concomitantes e terapia definitiva realizada atempadamente. Posto isto, a decisão de submeter o paciente a cirurgia ou de o tratar conservativamente tem de ser tomada. Uma abordagem completa e sistemática passa pela imagiologia, incluindo raio-x e ecografia, lavagem peritoneal diagnóstica ou abdominocentese, e análises sanguíneas, incluindo hemograma e bioquímicas. Por vezes, os resultados dos testes diagnósticos podem levar ao maneio médico versus o cirúrgico, especialmente quando não há resposta à terapêutica conservativa por parte do paciente. Noutros casos, o maneio cirúrgico urgente é necessário para a sobrevivência do doente. É também necessário ter em consideração as capacidades e equipamento do centro de atendimento médico veterinário, bem como as competências dos veterinários responsáveis. Isto pode ser extremamente trabalhoso, demorado e caro para os proprietários, devendo estes ser informados acerca do prognóstico, visto que muitas das vezes deparam-se com o dilema da eutanásia. Na tentativa de tornar a avaliação prognóstica mais eficaz na síndrome de abdómen agudo, foram avaliados previsores individuais de prognóstico e realizada a respetiva análise univariada. Foi realizado um estudo retrospectivo em 28 cães que se apresentaram com abdómen agudo. A anamnese foi feita e a informação sobre os sinais clínicos, os dados do exame físico e laboratoriais, os achados das cirurgias e prognóstico foram colhidos. Após análise, alguns parâmetros facilmente mensuráveis, mostraram contribuir para a previsão do prognóstico em cães com abdómen agudo, sendo estes os valores de creatinina e fosfatase alcalina, a avaliação da prega de pele e a desidratação do animal.
Salomón, Ana Carolina. "Situación socio-demográficas y de salud de niños de 0 a 5 años de muertes maternas ocurridas en el Hosptial Regional "Dr. Ramón Carrillo. Santiago del Estero, año 2008". Doctoral thesis, Salomón AC. Situación socio-demográficas y de salud de niños de 0 a 5 años de muertes maternas ocurridas en el Hosptial Regional "Dr. Ramón Carrillo. Santiago del Estero, año 2008 [Internet]. Universidad Nacional de Córdoba; 2016 [citado el 13 de febrero de 2020]. Disponible en: https://rdu.unc.edu.ar/handle/11086/6207, 2016. http://hdl.handle.net/11086/6207.
Pełny tekst źródła219 h. : il., gráf.; 29 cm.
Foundation: The population Santiago del Estero presented obstacies geographical, economic, social, communicational and cultural that hindered to them women in process reproductive receive attention of health adequate and timely; dying arbitrarily, leaving children orphaned and families caregivers, many times in situations adverse and very unfavorable. Population and sample: Total (16) records included maternal deaths that occurred at the hospital of reference year 2008; 7 surviving orphans under age 5 who are kept in the family. Controls: 14 mothers living; 14 children under 5 years, through stratified random sampling.
Fundamentación: La población santiagueña presentó obstáculos geográficos, económicos, sociales, comunicacionales y culturales que dificultaron a las mujeres en proceso reproductivo recibir atención de salud adecuada y oportuna; muriendo arbitrariamente, dejando hijos huérfanos y familiares cuidadoras, muchas veces en situaciones adversas y muy desfavorables. Diseño: Estudio descriptivo-prospectivo, transversal y observacional. Población y muestra: Se incluyeron los registros del total (16) de las muertes maternas ocurridas en el Hospital de referencia, años 2008: 7 huérfanos sobrevivientes menores de 5 años que se mantenían en el núcleo familiar. Controles 14 madres vivas; 14 menores de 5 años, mediante muestreo aleatorio estratificado
|Fil: De Salomón, Ana Carolina. Universidad Nacional de Córdoba. Facultad de Ciencias Médicas; Argentina.
Schmidt, Urdanivia Johannes. "El sistema de gestión de calidad basado en la norma ISO 9001:2008 y su influencia en el nivel de satisfacción de los psicólogos habilitados del Colegio de Psicólogos del Perú CDR I – Lima". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/6207.
Pełny tekst źródłaTesis
Erckie, Laimi Nelago Koskima. "Impacts and control of alien Proteaceae invasion in the Western Cape Province, South Africa". University of the Western Cape, 2017. http://hdl.handle.net/11394/6207.
Pełny tekst źródłaResearch focused on ecological impacts and control of invasive alien species (IAS) is gaining attention worldwide. The eradication and control of invasive alien plants (IAP) is essential for the restoration of native plant communities. Understanding ecological impacts and potential invasive risks of IAP is important for their effective management, particularly for prioritisation. Most studies concerning impacts on vegetation structure and plant-pollinator interactions have measured few ecological metrics, resulting in a superficial understanding of plant species invasion. Additionally, most studies related to the control of IAP have focused on major invaders which have demonstrated severe impacts, with less focus on emerging invaders. This study assessed ecological impacts, invasive risks and chemical control options for alien Hakea drupacea and Banksia species in the Western Cape Province, South Africa. Multiple ecological metrics data on vegetation, soil and plant-pollinator parameters were measured and compared between invaded and uninvaded sites. The invasion risk of fourteen Banksia species which have been introduced to South Africa was evaluated by conducting a weed risk assessment (WRA). The herbicide efficacy of resprouting Banksia integrifolia and Banksia serrata was determined by rating plants response to different treatments, with percentage, height and resprout vigour as measures. Results revealed significant negative impacts of alien H. drupacea and Banksia speciosa invasion on native plant species richness and diversity and on the abundance of native pollinators. The study demonstrated that 79% of Banksia species have a high risk of invading the Fynbos Biome. Chemical control with triclopyr+picloram mix provided effective means of controlling resprouting Banksia species. The high invasive risk of Banksia species and competitive effects of invasive alien B. speciosa and H. drupacea with native plant species for biotic and abiotic resources represents a major threat to biodiversity conservation in the Fynbos Biome. The removal of both naturalised and invasive alien H. drupacea and Banksia populations is recommended in order to conserve native plant communities in the Fynbos Biome.
2020-08-31
Silva, Muñoz Lydia. "Ontology-based metadata for e-learning content". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/6207.
Pełny tekst źródłaNowadays, the popularity of the Web encourages the development of Hypermedia Systems dedicated to e-learning. Nevertheless, most of the available Web teaching systems apply the traditional paper-based learning resources presented as HTML pages making no use of the new capabilities provided by the Web. There is a challenge to develop educative systems that adapt the educative content to the style of learning, context and background of each student. Another research issue is the capacity to interoperate on the Web reusing learning objects. This work presents an approach to address these two issues by using the technologies of the Semantic Web. The approach presented here models the knowledge of the educative content and the learner’s profile with ontologies whose vocabularies are a refinement of those defined on standards situated on the Web as reference points to provide semantics. Ontologies enable the representation of metadata concerning simple learning objects and the rules that define the way that they can feasibly be assembled to configure more complex ones. These complex learning objects could be created dynamically according to the learners’ profile by intelligent agents that use the ontologies as the source of their beliefs. Interoperability issues were addressed by using an application profile of the IEEE LOM- Learning Object Metadata standard.
Івановський, М. Б., i Назарій Євгенович Бурак. "Особливості динаміки розвитку сфери ІТ в Україні". Thesis, Львівський державний університет безпеки життєдіяльності, 2019. http://hdl.handle.net/123456789/6207.
Pełny tekst źródłaThomas, Theopolina. "Marama bean (Tylosema esculentum), a non-nodulating high protein legume indigenous to the Kalahari sands : studies of its N nutrition". Master's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/6207.
Pełny tekst źródłaMarama bean is a non-nodulating perennial legume native to the nutrient-poor soils of the Kalahari Sands. In Botswana and Namibia, it is the staple food of the Khoisan people. Marama bean, however, still have not been cultivated or established as an agricultural crop in these countries. This study investigated soil factors affecting the distribution and growth of marama bean in the field and how it would respond to additional N and P supply both under field and glasshouse conditions. The study then attempts to explore and understand the mechanisms employed by marama bean to acquire high nutrient concentration in its organs.