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Manninen, I. (Iikka). "Gamified BCSS for healthier food choices:case implicity." Master's thesis, University of Oulu, 2018. http://urn.fi/URN:NBN:fi:oulu-201806022430.
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The main aim of this thesis was to design a persuasive and gamified version of the implicit association test. The goal of the mobile application is to help people adopt healthier eating habits. Poor diet is a major factor in many diseases and contributes negatively to life quality. Additionally, healthcare systems and employers are also affected in the form of production losses and treatment costs. The underlying research aim is to utilize the artefact to investigate whether exposing a user to possible cognitive dissonances in thinking can lead to reflection. Reflection in turn can lead to reduction of dissonances and in turn, behaviour change. Additionally, the application allows the user to rehearse responses towards different types of foods, which is accomplished by associating healthy foods with positive words and unhealthy foods with negative words.
The purpose of Persuasive Systems Design (PSD) model, the main design framework used in this thesis, is to design behaviour change support systems. Behaviour Change Support Systems (BCSSs) are systems that aim to change behaviour and attitude without the use of any unethical means. Implicit association test (IAT) is a tool in the field of social psychology that is used measure implicit attitudes towards different concepts. Gamification can be defined as the use of game elements and mechanics in non-game contexts.
The development process started with an analysis done with PSD model. Following it, mock-ups and a prototype based on the PSD model analysis and the original version of the IAT were created. After that, gamification features were designed by using a gamification framework. The original IAT was a strong influence in determining what types of persuasive and gamification features would be present in the application.
Design science research guidelines were utilized as a checklist throughout research. The artefact and its persuasiveness were evaluated with a perceived persuasiveness questionnaire. The results showed slightly positive responses on the constructs of Primary Task Support (support for carrying out primary task), Dialogue Support (feedback), Perceived Credibility and Design Aesthetics. Perceived Persuasiveness responses were slightly negative. The reward feature that included unlocking different food icons and their health information was especially well received.
This thesis contributed a detailed description of the development process of a BCSS. During the development process it was shown that the PSD model and the gamification framework could be used together without conflicts to design an artefact. The research on the artefact’s effectiveness in causing behaviour change is left for further study.
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Dias, Cleverton Oliveira. "Teoria BCS com efeito Rashba." Universidade Federal do Amazonas, 2015. http://tede.ufam.edu.br/handle/tede/4987.
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CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
This dissertation presents systematically the traditional superconductors, taking into account its discovery, properties that characterize the theory describing and changes taking place in their thermodynamic properties when subject to spin-orbit interaction Rashba. In the rst part are the key topics discussed related to phenomenon of superconductivity. It begins with a chapter 1 approach of the historical evolution of superconductivity and presentation properties that characterize a conventional superconductor, in addition to de ne superconductors Type I (conventional) and type II. The Chapter 2 is intended for an explanation of the microscopic BCS theory whose application is associated with type I superconductors, although this chapter argue about the interaction of electrons with the network, thus forming what is called Cooper pairs. The Chapter 3 is intended to introduce the Rashba model, which can be veri ed in two ways: by spontaneous generation of electric eld the junction interface of two materials or because application of the an external electric eld. In work not take into account the so that will be produced this electric eld. In Chapter 4 it shows the model Hamiltonian that constitutes the junction BCS Hamiltonian with the Hamiltonian of Rashba, from this model it is intended to calculate the e ect of Rashba interaction on the gap energy using the method of canonical transformations, consisting to assess the evolution of the operator concerned by a equation of dynamic evolution, allowing us nd the self energy carriers and their respective eigenvalues and associates them to gaps of energy. As a result of Chapter 4, Chapter 5 determine the gap superconductor function of temperature and the parameter R Rashba and as the thermodynamic properties of the model studied in this chapter also opens a space for comments and discussions. We end with Chapter 6, presenting partial conclusions, Related analytical curve made from certain data numerical, these curves will analyze the variation in thermodynamic properties of superconductors because the e ect Rashba.
A presente dissertação consiste em apresentar de forma sistemática os supercondutores tradicionais, levando em consideração sua descoberta, as propriedades que o caracterizam, a teoria que os descrevem e as mudanças que ocorrem em suas propriedades termodinâmicas quando submetidos a interação spin- orbita de Rashba. Na primeira parte são discutidos os t ópicos fundamentais referentes ao fenômeno da supercondutividade. Inicia-se o capítulo 1 com uma abordagem da evolução hist orica da supercondutividade e a apresentação das propriedades que caracterizam um supercondutor convencional, al em de de nir supercondutores tipo I (convencionais) e tipo II. O cap tulo 2 destina-se a uma explana c~ao da teoria microscópica BCS, cuja aplicação está associada a supercondutores de tipo I, ainda neste capítulo argumenta-se sobre a interação dos elétrons com a rede, formando assim o que chamamos de pares de Cooper. O capiítulo 3 destina-se a apresentar o modelo de Rashba, que pode ser verificado de duas maneiras: por geração espontânea de campo elétrico na interface da junção de dois materiais ou em razão da aplicação de um campo elétrico externo. No trabalho não se levar a em conta a maneira que ser a produzido esse campo elétrico. No capítulo 4 apresenta-se o Hamiltoniano do modelo, que consiste na junção do Hamiltoniano BCS com o Hamiltoniano de Rashba, a partir deste modelo pretende-se calcular o efeito da intera ção de Rashba, sobre os gaps de energia utilizando o m etodo das transforma ções canônicas, que consiste em avaliar a evolu ção temporal do operador em questão por meio de uma equa ção de evolução dinâmica, o que nos permitir a encontrar os autovetores de energia e seus respectivos autovalores e associa-los aos gaps de energia. Como consequência do capítulo 4, no cap tulo 5 determinaremos o gap do supercondutor em fun ção da temperatura e do parâmetro de Rashba R, bem como as propriedades termodinâmicas do modelo estudado, neste cap tulo tamb em abre-se um espa co para comentarios e discussões. Finalizamos com o cap tulo 6, apresentando conclusões parciais, relacionadas a an alise de algumas curvas feitas a partir de dados num ericos, estas curvas permitirão analisar a varia ção nas propriedades termodinâmicas dos supercondutores devido o efeito Rashba.
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Suhada, Robert. "The XMM-BCS galaxy cluster survey." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-132857.
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Cerrito, Stefano. "Thermodynamics of the BCS-BEC crossover." kostenfrei, 2007. http://mediatum2.ub.tum.de/doc/623023/document.pdf.
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Bollmark, Gunnar. "Self-energy effects in BCS superconductors." Thesis, KTH, Fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-238681.
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Ljepavic, Danijela. "Les expressions figées en français et en BCMS : traduction, comparaison." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAC013.
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Cette thèse procède à une comparaison des expressions figées entre les langues BCMS (bosniaque/bosnien, croate, monténégrin, serbe) et le français en vue de la traduction. Dans la première partie, l'étude commence par la définition des expressions figées et des critères de figement. Après avoir fait le point sur la question des langues BCMS, on présente le corpus des expressions figées en BCMS et en français, avec leur répartition dans différents domaines culturels et la distinction de trois types d'expressions : calques, expressions transparentes, expressions opaques. La seconde partie est consacrée à l'analyse comparative des expressions figées en BCMS et en français. Elle commence par un parcours de leurs différentes origines, puis on examine les fondements culturels des expressions figées, en fonction de différents domaines fournisseurs. On développe ensuite une analyse linguistique comparée des expressions figées, en détaillant les noms composés et les différentes locutions (verbales, adjectivales etc.) et en intégrant la dimension rhétorique, notamment les métaphores. Pour finir, après une mise au point générale sur la traduction, on examine les problèmes d'interprétation et les différentes solutions de traduction des expressions figées dans les deux sens, entre français et BCMSThis thesis makes a comparison between the idioms of the BCMS languages (Bosnian, Croatian, Montenegrin, Serbian) on the one side, and the French language on the other, in the domain of translation.In the first segment, the study begins with the definition of idioms and the criteria for fixation. After the explanation of differences among BCMS languages, we present the corpus of idioms in BCMS and in French, with their distribution within different cultural domains, while distinguishing among three types of idiomatic expressions: literal, transparent, and opaque.The second part is devoted to the comparative analysis of idioms in BCMS and French. It begins with a record of their different origins, after which we examine the cultural foundations of expressions, depending on different domains. We develop a comparative linguistic analysis of idioms, giving details on various compound names and phrases (verbal, adjectival, etc.), and integrating the rhetorical dimension, including metaphors. Finally, after an overall focus on translating, we examine issues found in interpretation and translation solutions for different idioms between French and BCMS
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Ware, Doreen. "Identification of host factors involved in symptom development of BCTV /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488203857251075.
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Natale, Louis, and Craig Wierzbicki. "The BCT-302 1553 Test Bus Card." International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579706.
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ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NVThe desire to control an LRU and/or MIL-STD 1760 store via an independent 1553 stream on current weapon platforms created the need for the development of the BCT-302 1553 Test Bus Card. This solution solves the issues of integration without the need to perform an aircraft OFP change. The BCT- 302 is a customized MIL-STD-1553 card for use in Teletronics Technology Corporation, (TTC), Airborne Instrumentation Multiplexer (AIM) and High-Speed Avionics Data Acquisition Unit (HSAVDAU) products. The BCT-302 card consists of two redundant MIL-STD-1553 ports. Each port is independently configurable by the AIM/HSAVDAU host processor to function as a Bus Controller (BC), Remote Terminal (RT) or Bus Monitor (BM). The system is capable of cherry picking parameters from any 1553 bus and retransmitting assembled messages to a weapon and/or an LRU in a 1553 format. This paper describes the design requirements of the BCT card and how those requirements were met during an AIM-9X launch on an F-22.
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Fonseca, Vinicius Borges. "Plano de marketing para a BCS Shop." Master's thesis, Instituto Superior de Economia e Gestão, 2019. http://hdl.handle.net/10400.5/19557.
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Mestrado em MarketingO presente projeto tem como objetivo a elaboração de um plano de marketing para a empresa BCS Shop, que atua no sector de retalho de artigos desportivos e vestuário na Europa, nomeadamente no mercado de surf e moda praia. A empresa é jovem, possui uma gestão não profissionalizada e apresenta dificuldades na articulação dos múltiplos canais de venda e dos pontos de contacto com o cliente. O estudo realizado é de natureza exploratória. Com o objetivo de obter informação acerca da situação atual da empresa foram utilizados dados quantitativos secundários e realizada uma entrevista semiestruturada com o CEO. Já para obter informações acerca da qualidade do serviço e da integração e consistência dos pontos de contacto do cliente com a organização, foram realizadas entrevistas semiestruturadas. A estratégia adotada foi a de action research. A realização do diagnóstico da empresa foi essencial para a melhor compreensão da sua envolvente operacional e estratégica. Dos resultados obtidos foi possível propor um plano de marketing para a empresa onde foi dada especial atenção à optimização dos canais de venda e integração dos pontos de contacto com o cliente tanto na loja física quanto na virtual. Os resultados encontrados auxiliaram o desenvolvimento de estratégias e táticas em um plano de marketing coerente e consistente com os objetivos da empresa.
This project aims to develop a marketing plan for BCS Shop, which operates in the sporting goods and clothing retail sector in Europe, especially in the surf and beachwear market. The company is young, and has a non-professionalized management, therefore difficulties in articulating sales channels and touch points with customers. The study is exploratory in nature. In order to obtain information about the current situation of the company, secondary quantitative data were used and a semi-structured interview with the CEO was conducted. To evaluate and obtain information about the quality of service and the integration and consistency of customer contact points with the organization, semi-structured interviews were conducted. The strategy adopted was action research. Conducting the company's diagnosis was essential for a better understanding of its operational and strategic areas. From the results it was possible to build a maketing plan for the company with a special attention in optimizing sales channels and integrates customer touch points in both the physical store and the online store. The results found supported the development of strategies and tactics in a marketing plan consistent with the company's objectives.
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Santos, Edgar Gonzaga Souza dos. "Supercondutividade BCS na rede tabuleiro de xadrez." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/12171.
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Tendo por motivação as propriedades supercondutoras do óxido metálico Cd2Re207, cuja estrutura cristalina é do tipo pirocloro, propomos um modelo eletrônico em uma rede do tipo tabuleiro de .1:adrez,que pode ser vista como um análogo bidimensional da rede piroclórica. Incluindo somente graus de liberdade de carga, tratamos o modelo através de uma aproximação BCS, realizando o desacoplamento dos termos de interação no espaço real. A passagem ao espaço recíproco dá origem a um modelo BCS de duas bandas acopladas, sendo uma delas não dispersiva. Nosso estudo da fase supercondutora se baseia na minimização numérica da energia livre. Propriedades características, como o quociente entre o parâmetro de ordem e a temperatura crítica ou o salto do calor específico na transição de fase, são obtidas e comparadas com os valores universais previstos pela teoria BCS para um sistema de uma única banda no limite de acoplamento fraco. Também discutimos as propriedades de simetria do gap supercondutor no espaço de vetores de onda.Motivated by the superconducting properties of the metallic oxide Cd2Re207, whose crystal structure is of the pyrochlore type, we propose an electronic modeI on a checkerboard lattice, which can be viewed as a two-dimensional analog of the pyrochlore lattice. lncluding only charge degrees of freedom, we treat the modeI via a BCS approximation, decoupling the interaction terms in real space. Going over to reciprocal space yields a BCS modeI with two coupled bands, one of them being non-dispersive. Our study of the superconducting phase is based on numerical minimization of the free energy. Characteristic properties, like the ratio between order parameter and critical temperature or the specific-heat jump at the phase transition, are obtained and compared with universal values predicted by the BCS theory for a single-band system in the weak-coupling limito We also discuss the symmetry properties of the superconducting gap in wave-vector space.
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Diniz, Ricardo. "Modelo de bósons interagentes e sua relação com o BCS." Universidade de São Paulo, 1990. http://www.teses.usp.br/teses/disponiveis/43/43131/tde-30042014-152410/.
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Através de um hamiltoniano efetivo baseado no tratamento de NAMBU POT.90 para o BCS, no qual incluímos além do emparelhamento monopolar o emparelhamento quadrupolar, discutimos a relação entre esse modelo e o modelo de bósons interagentes. Uma aplicação e feita a cadeia o (6) do IBM, que corresponde ao limite GAMA-instável do modelo de bohr. As dificuldades encontradas e uma possível generalização para o modelo são discutidas.The nambu mechanism for BCS theory is extended with inclusion of quadrupole pairing in adition to the usual monopole pairing. An effective Hamiltonian is constructed and its relation to the IBM is discussed. We discussed the faced difficulties and a possible generalization of the model.
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Négréa, Daniel. "Proton-neutron pairing correlations in atomic nuclei." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00870588.
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The common understanding of proton-neutron pairing, whose fingerprints are currently investigated in N = Z nuclei, relies on Cooper pair mechanism and BCS-type models. In the present thesis we present an alternative approach which, contrary to BCS models, conserves exactly the particle number and the isospin. In this approach the ground state of N=Z nuclei is described as a condensate of alpha-like quartets built by two neutrons and two protons coupled to the total isospin T=0 and total spin J=0. The comparison with exact shell model calculations shows that the quartet condensation model (QCM) gives a very accurate description of pairing correlations in N=Z nuclei, much better than the BCS models. It is also shown that proton-neutron pairing and alpha-type condensation are important not only for N=Z nuclei but also for nuclei with excess neutrons. In the latter case the condensate of alpha-like quartets coexist with the condensate of the neutron pairs in excess relative to the N=Z isotope. Using the framework of QCM we have also studied the competition between the isovector and the isoscalar proton-neutron pairing in nuclei with N=Z. Our results indicate that the contribution of isoscalar pairing to the ground state pairing correlations is very small compared to the isovector pairing.
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Ghosh, Angsula [UNESP]. "Modelo BCS renormalizado e supercondutores de alta temperatura." Universidade Estadual Paulista (UNESP), 1999. http://hdl.handle.net/11449/132796.
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Ghosh, Angsula. "Modelo BCS renormalizado e supercondutores de alta temperatura /." São Paulo : [s.n.], 1999. http://hdl.handle.net/11449/132796.
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Kubbinga, Marlies [Verfasser]. "BCS-based biowaivers : risks and opportunities / Marlies Kubbinga." Mainz : Universitätsbibliothek Mainz, 2017. http://d-nb.info/1122753373/34.
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Kubbinga, Marlies [Verfasser]. "BCS-based biowaivers : risks and opportunities / Marlies Kubbinga." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/1120742323/34.
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Gonzalez, Camelo Sandra Patricia. "BCS superfluid Fermi systems with large scattering lenght." Doctoral thesis, SISSA, 2007. http://hdl.handle.net/20.500.11767/3931.
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Woldemicael, B. (Bereket). "Designing a BCSS for mobile devices:an application to help the chronically tardy." Master's thesis, University of Oulu, 2015. http://urn.fi/URN:NBN:fi:oulu-201511212162.
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The purpose of this thesis is to study the process of developing a behaviour change support system (BCSS) which help users to manage and utilize their time. Proper time management is an important asset for a successful life. However, most of us have difficulties in using our time efficiently due to various reasons. Some of the reasons include procrastination and becoming overoptimistic about completing tasks in short periods of time. On this study, an iOS based application is developed based on BCSS theory. The application can be used by anyone who wants to improve their efficiency in time management. The intention of the system is to help users identify and improve their weaknesses on time management through using the application for a longer period. BCSS is one area of persuasive technology research, and it is defined as information systems designed to form, alter or reinforce attitudes, behaviours or an act of complying without using deception, coercion or inducements. BCSS are applied in various sectors such as health, wellness and environment. It is also important to note that Persuasive System Design model (PSD) is used as the main construct to develop our system. PSD provides a recent and technology oriented persuasion framework that helps to design, develop and evaluate BCSS. This project is based on a Design Science research method through developing an artefact. In the end, the system is evaluated qualitatively.
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Casadei, Matteo. "Analisi critica della superconduttività BCS in relazione all'effetto Meissner." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16781/.
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In questa tesi vengono analizzati i principali argomenti con cui il fisico argentino J.E. Hirsch critica la descrizione dell' effetto Meissner nella teoria della superconduttività BCS. Hirsch afferma che la spiegazione dell' effetto Meissner nel framework tradizionale sia incompatibile con la conservazione del momento angolare e con la reversibilità della transizione superconduttiva,
e propone una teoria alternativa, chiamata hole superconductivity, che sarebbe in grado di fornire una descrizione soddisfacente di questi fenomeni. Nel primo capitolo sono riportati i
principali risultati ottenuti dalla teoria BCS. Nel secondo capitolo si espongono le argomentazioni critiche mosse da Hirsch. In particolare, quando la transizione superconduttiva avviene in
presenza di un campo magnetico costante, Hirsch sostiene che la teoria BCS non contenga al suo interno gli elementi fisici in grado di generare la corrente di Meissner che scherma il campo, e
di giustificare la reversibilità della transizione. Nel terzo capitolo viene proposto il meccanismo della hole superconductivity che, secondo Hirsch, è in grado di spiegare in modo consistente tali
fenomeni. Vengono affrontati solo gli aspetti della hole superconductivity inerenti alla critica mossa da Hirsch, non viene trattata la teoria nella sua interezza.
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Dobrek, Łukasz. "Optical manipulation of ultra cold gases and dipolar BCS." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=970679203.
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Liao, Renyuan. "Fermion Pairing and BEC-BCS Crossover in Novel Systems." Kent State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=kent1220882883.
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Hamann, Fábio André. "Aspectos do controle biológico de Botrytis cinerea Pers. Ex. Fr. em videira." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/5054.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorRio Grande do Sul (RS), the most important state of grape production in Brazil, harvests, approximately, 780 thousand tons annually. One of the biggest constraint factors to the obtainment of higher production numbers is the incidence of late season diseases in vineyards, being botrytis bunch rot, caused by Botrytis cinerea, one of the major contributors for field and post-harvest losses. Red grapes can show more resistance against this fungus, due to higher levels of phenolic compounds. The use of biological control agents (BCAs) emerges as a promising alternative to control botrytis disease. For this reason, the objectives of this study were to test isolates from this fungal pathogen, originated from the two main grape production regions in the state of RS, trough in vitro direct confront test against BCAs fungal isolates (Trichoderma spp. and Gliocladium sp.) and to test the same pathogen isolates on semi in vivo biological control, against the BCAs isolates which obtained the highest biological activity during the in vitro test, on the post-harvest storage of table grapes, on a red and a white cultivar. The B. cinerea isolates used were UFSM SG01, UFSM SG02, from serra (mountain range) region, UFSM CM01, and UFSM CM02, from campanha meridional (meridional pampas) region. The BCAs isolates used in this study were Tricoderma spp., UFSM T20, UFSM T17, UFSM T15.1 (obtained from soil), UFSM TSG, UFSM TCM (obtained from the same grape bunches where B. cinerea was isolated, representing each region), and Gliocladium sp., UFSM G4DB (obtained from soil). UFSM TSG, UFSM TCM and UFSM T15.1 showed the highest biocontrol activity (B. A.) in vitro, in general over 50% against all B. cinerea isolates. The same BCAs were selected to be used at the semi in vivo test with detached berries for three inoculation periods: B+T, pathogen and BCA inoculated at the same time; B+24hT, pathogen inoculated first and BCA 24 h later, T+24hB, BCA inoculated first and pathogen 24 h later. A higher control, considered as the lower damage level, on T+24hB period, showed the importance of preventive treatment. Cracks on berries played a more important role than the color of the skin for botrytis infection.
O Rio Grande do Sul, o estado produtor de uvas mais importante no Brasil, colhe em média 780 mil toneladas por ano. Um dos maiores entraves para a obtenção de maiores médias de produção é a incidência de doenças de final de ciclo (DFC), sendo Botrytis cinerea, agente causador da podridão-cinzenta, um dos maiores responsáveis por perdas de produção no campo e na pós-colheita. Uvas tintas podem apresentar maior resistência à podridão-cinzenta, devido à maior concentração de compostos fenólicos. O uso de agentes de controle biológico (BCAs) é uma alternativa promissora no controle da podridão de botrytis. Dessa maneira, os objetivos deste estudo foram testar isolados do patógeno coletados das duas principais regiões vitivinícolas do RS em confronto direto in vitro com isolados de agentes antagonistas (Trichoderma spp e Gliocladium sp.) e testar os mesmos isolados do patógeno em controle biológico semi in vivo com os isolados antagonistas que obtiveram as maiores médias de atividade de biocontrole no teste in vitro, na pós-colheita de uvas de mesa, em cultivares branca e tinta. Os isolados de B. cinerea empregados foram UFSM SG01, UFSM SG02, UFSM SG 03, oriundos da serra, e UFSM CM01 e UFSM CM02, oriundos da campanha meridional. Os isolados antagonistas empregados no teste in vitro foram UFSM T20, UFSM T17, UFSM T15.1 (oriundos de solo), UFSM TSG, UFSM TCM (oriundos de cachos de uva coletados nas mesmas regiões de coleta do patógeno), de Trichoderma spp., e UFSM G4DB, de Gliocladium sp.. Os isolados UFSM TSG, UFSM TCM e UFSM T15.1 foram os três que obtiveram as maiores médias de atividade de biocontrole, em geral acima de 50%, para todos os isolados de B. cinerea, testados em confronto direto in vitro. Esses isolados BCAs foram selecionados para o teste de controle biológico semi in vivo em bagas destacadas, em três períodos de inoculação: B+T, antagonista e patógeno aplicados ao mesmo tempo; B+24hT, patógeno inoculado primeiro e antagonista 24h após, T+24hB, antagonista aplicado primeiro e patógeno 24h após. O maior controle, assumido a partir do menor grau de dano, no período T+24hB, evidenciou a importância do tratamento preventivo. Rachaduras em bagas tiveram maior influência do que a coloração da casca na ocorrência da podridãocinzenta.
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Geaney, Jacqueline N. "The Attitude-Behavior Disconnect: Identifying factors that moderate behavior in BC's environmental movement." Thesis, Boston College, 2010. http://hdl.handle.net/2345/1320.
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Thesis advisor: Brian GareauThis study examines how attitudes of environmental concern affect the behavior of students on the Boston College (BC) campus. Conventional wisdom suggests that attitude would determine behavior, but past studies have been unable to find a connection between environmental attitude and behavior. This suggests that there are other factors at play, in addition to environmental concern. Using survey and in-depth interview data, this study focuses on the influence of the following factors: monetary cost, convenience, habit and visibility of consequences. The findings suggest that attitude itself does influence environmental behavior, but that the aforementioned factors play an important role in either increasing or decreasing the rate of behavior. I conclude by suggesting that the impact of cost as a barrier to behavior speaks to the importance of structural change in order to increase the rate of green behavior
Thesis (BA) — Boston College, 2010
Submitted to: Boston College. College of Arts and Sciences
Discipline: Sociology Honors Program
Discipline: Sociology
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Eneias, Ronivon Louren?o. "Pareamento BCS em um L?quido de Luttinger em 1D." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16575.
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Previous issue date: 2010-12-20Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
In this work we investigate the effect of a BCS-type pairing term for free spinless fermions, with a propensity to form a condensate of pairs in a 1+1 dimension. Using the of bosonization technique we explore the possible condition of existence of quasiparticles in a superconducting state. Although there is no spontaneous breaking of chiral symmetry the propagator of one-particle fermion is massive and, in fact, resembles the one-particle Green s function of conventional quasiparticles
Neste trabalho investigamos o efeito de um termo de emparelhamento do tipo BCS para f?rmions livres sem spins, com propens?o a formar um condensado de pares em uma dimens?o 1+1. Utilizando a t?cnica de bosoniza??o vamos explorar a poss?vel condi??o de exist?ncia de quasipart?culas em um estado supercondutor. Embora n?o haja nenhuma quebra espont?nea de simetria quiral o propagador de 1-part?cula fermi?nica ? massivo e de fato assemelha-se a fun??o de Green de 1-part?cula de uma quasipart?cula convencional
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Ciavatta, Alessandro. "Teoria della superconduttività e soluzione numerica dell’equazione della gap BCS." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23633/.
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La superconduttività è uno stato della materia caratterizzato dall'assenza di resistività DC. Durante la transizione di fase il materiale espelle dall'interno il campo magnetico applicato, diventando un perfetto diamagnete; questo è noto come effetto Meissner-Ochsenfeld. La prima teoria presentata in questa tesi è la teoria di London, che spiega l'effetto Meissner all'interno delle due equazioni fenomenologiche di London. In seguito viene presentata la teoria di Ginzburg-Landau, che estende la teoria di Landau sulle transizioni di fase del secondo ordine e ricava una dipendenza della densità dei portatori superconduttivi dai parametri termodinamici. Infine viene descritta la teoria microscopica BCS (Bardeen-Cooper-Schrieffer), che supponendo l'interazione elettrone-elettrone attrattiva riesce a dimostrare l'esistenza di un gap energetico, fornendo una spiegazione microscopica alle teorie fenomenologiche. L'equazione che esplicita la dipendenza dell'energia di gap dalla temperatura è stata risolta numericamente tramite un codice in Python.
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Souza, Leonardo da Fonseca. "Controle avançado aplicado ao sistema bcs operando com escoamento monofásico." Escola Politécnica /Instituto de Matemática, 2014. http://repositorio.ufba.br/ri/handle/ri/23032.
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Existem diversas técnicas de elevação artificial de petróleo. Este trabalho trata especificamente o método do Bombeio Centrífugo Submerso (BCS). Este método possui a vantagem de elevar altas vazões de fluidos em relação às demais técnicas de elevação, além de poder atuar sob diferentes condições dinâmicas de escoamento. O presente trabalho tem como objetivo o uso da técnica de controle Supervisor Fuzzy-PID e Adaptativo para levar o bombeio centrífugo submerso a operar no head desejado, mesmo na presença de incertezas e dinâmicas não modeladas. O Laboratório de Elevação Artificial (LEA), da Escola Politécnica da Universidade Federal da Bahia, dispõe de uma planta BCS com um poço de 32mde altura completamente instrumentado, num ambiente experimental que favorece o desenvolvimento de estudos e pesquisas, entre outros, na área de controle. Para o presente estudo foram realizados experimentos práticos que possibilitaram o desenvolvimento de modelos a partir de dados medidos. Além disso, os resultados obtidos com o método de controle Supervisor Fuzzy-PID e Adaptativo em ambiente simulado mostram que há estabilidade no sinal de controle e na resposta da planta. Assim espera-se contribuir na formulação de novas estratégias de controle aplicáveis ao método de bombeio centrífugo submerso.
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Coleman, Shannon L. "Criterion validation of the Binghamton Childhood Abuse Screen (BCAS) using the modified Stroop procedure." Diss., Online access via UMI:, 2008.
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MARTINS, J. R. "ANÁLISE NUMÉRICA DA DISSIPAÇÃO DE CALOR DO MOTOR ELÉTRICO DO SISTEMA BCSS EM SKID." Universidade Federal do Espírito Santo, 2018. http://repositorio.ufes.br/handle/10/8453.
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Previous issue date: 2018-03-08O desenvolvimento recente do S-BCSS (Bombeio Centrífugo Submerso Submarino em Skid), assentado no leito marinho, é uma alternativa ao sistema convencional, facilitando intervenções em caso de falha. A bomba é acionada por um motor elétrico cujo resfriamento deve ser eficiente para garantir a continuidade do seu funcionamento. A retirada de calor do motor é efetuada pelo fluido produzido. O intuito desta dissertação é compreender o processo de resfriamento do motor elétrico para o escoamento monofásico, turbulento com transferência de calor por convecção em uma geometria anular, que representa o espaço formado entre a cápsula e o motor do sistema S-BCSS. Com este objetivo é utilizado a dinâmica de fluidos computacional (CFD Computational Fluid Dynamics) para resolver esse escoamento, o modelo de turbulência utilizado é o kappa-epsilon padrão com função de parede melhorada (Enhanced Wall Treatment). São consideradas quatro vazões de operação do sistema, três fluidos com diferentes números de Prandtl, três configurações de geometrias anulares diferentes, uma concêntrica e duas excêntricas, juntamente com a condição de temperatura na superfície do motor constante. As simulações são validadas através da comparação do número de Nusselt na região desenvolvida com a correlação de Gnielinski. Observa-se que a simulação desse escoamento possui dependência geométrica, sendo necessário a utilização de uma geometria 3D. Se a condição de fluxo de calor constante fosse utilizada, a temperatura do motor apresentaria menores intensidades no início e maiores no final da geometria. Portanto, quanto maior o número de Nusselt, maior é a transferência de calor, assim intensificando o resfriamento do motor elétrico. Na geometria excêntrica é observada uma transferência de quantidade de movimento da região anular inferior para a superior, fazendo com que o número de Nusselt apresente uma variação angular. Em geometrias excêntricas o escoamento se desenvolve em maiores comprimentos, observando que quanto maior a excentricidade, maior é este comprimento. Por fim, destaca-se que para o sistema S-BCSS a utilização de uma geometria excêntrica não é adequada. Palavras chave: S-BCSS, resfriamento do motor, excentricidade anular, número de Nusselt, CFD.
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Iskin, Menderes. "BCS to BEC Evolution and Quantum Phase Transitions in Superfluid Fermi Gases." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16326.
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This thesis focuses on the analysis of Bardeen-Cooper-Schrieffer (BCS)
to Bose-Einstein condensation (BEC) evolution in ultracold superfluid
Fermi gases when the interaction between atoms is varied. The tuning of
attractive interactions permits the ground state of the system to evolve from a weak
fermion attraction BCS limit of loosely bound and largely overlapping Cooper pairs
to a strong fermion attraction limit of tightly bound small bosonic molecules
which undergo BEC.
This evolution is accompanied by anomalous behavior of many superfluid
properties, and reveals several quantum phase transitions.
This thesis has two parts:
In the first part, I analyze zero and nonzero orbital angular momentum
pairing effects, and show that a quantum phase transition occurs for
nonzero angular momentum pairing, unlike the $s$-wave case where the BCS
to BEC evolution is just a crossover.
In the second part, I analyze two-species fermion mixtures with mass and
population imbalance in continuum, trap and lattice models. In contrast with
the crossover physics found in the mass and population balanced mixtures,
I demonstrate the existence of phase transitions between normal and
superfluid phases, as well as phase separation between superfluid (paired)
and normal (excess) fermions in imbalanced mixtures as a function of scattering
parameter and mass and population imbalance.
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Šuhada, Róbert [Verfasser], and Hans [Akademischer Betreuer] Boehringer. "The XMM-BCS galaxy cluster survey / Róbert Šuhada. Betreuer: Hans Boehringer." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2011. http://d-nb.info/1015169961/34.
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Kipper, Carla Judite. "Vidro de spin e antiferromagnetismo com interacão de pareamento BCS local." Universidade Federal de Santa Maria, 2005. http://repositorio.ufsm.br/handle/1/9183.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorIn this work the competition among spin glass(SG), antiferromagnetism (AF) and BCS pairs formation (PAIR) in real space is investigated. The model consists of an Ising spin glass term and a local BCS term that favors double site occupation. This model is composed by two sublattices, but only spins in diferent sublattices can interact. The Ising coupling is a random variable Jij that follows a gaussian probability distribution with average - J0=N and variance J²=N. The problem is formulated in terms of functional integral formalism, where the spin operators are written as bilinear combination of Grassmann felds. Using the replica method and the static approach for the spin-spin correlation functions, we obtain the grandcanonical potential. The results are presented in phase diagrams which show T=J versus g=J for several values of J0=J (where T is the temperature and g is the pairing strength interaction). The order parameters solution indicate the PAIR phase (double ocupation of sites) when g=J is sufciently high. As the value of g=J decreases, the problem presents antiferromagnetic or spin glass solution, that dependis on the ratio J0=J. For high temperatures and any value of J0, we obtain paramagnetic solution. For values of J0 ≤ 1:5J, the SG solution appears at temperature Tf = 0:96J. In the range 1:5J < J0 ≤ 1:7J, the AF phase appears between the paramagnetic and spin glass solutions. The spin glass solution is not found when J0 > 1:7J.
Neste trabalho investiga-se a competição entre vidro de spin (SG), antiferromagnetismo (AF) e formação de pares do tipo BCS (PARES) no espaço real. O modelo consiste em um acoplamento Ising juntamente com um termo BCS local que favorece a dupla ocupação dos sítios. Neste modelo composto por duas sub-redes, o acoplamento ocorre unicamente entre spins localizados em sub-redes diferentes. O termo que acopla os spins é uma variável aleatória Jij com uma distribuição de probabilidade gaussiana, sendo a média dada por - JO=N e a variância por J²=N. O problema é formulado em termos das integrais funcionais, onde as variáveis de spin são escritas como combinações bilineares dos campos de Grassmann. Utilizando o método das réplicas e a aproximação estática para as funções correlação spinspin, obtemos o potencial grande canônico por sítio. Os resultados são apresentados através de diagramas de fases T=J versus g=J para vários valores de JO. Em todos os diagramas, quando g=J é suficientemente grande, as soluções das equações para os parâmetros de ordem indicam a presença da fase de formação de pares. À medida que diminui o valor de g=J, o problema apresenta como solução antiferromagnetismo e/ou vidro de spin, dependendo da razão JO=J. Para altas temperaturas e qualquer valor de JO, temos solução paramagnética, com m e q nulos. Para valores de JO ≤ 1; 5J, aparece a solução vidro de spin em temperatura Tf = 0; 96J. No intervalo de 1; 5J < JO ≤ 1; 7J surge uma fase antiferromagnética entre as soluções paramagnética e vidro de spin. Quando JO > 1; 7J a solução vidro de spin desaparece.
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Soundararajan, R. "Enhancing the bioavailability of BCS Class IV drugs using polymeric nanoparticles." Thesis, University College London (University of London), 2016. http://discovery.ucl.ac.uk/1479729/.
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Hydrophobic drugs that are P-gp substrates (BCS Class IV) such as paclitaxel, CUDC-101 etc. pose a serious challenge for oral drug delivery. Polymeric amphiphiles such as N-palmitoyl-N-monomethyl-N,N-dimethyl-N,N,N-trimethyl-6-O-glycolchitosan (GCPQ) are capable of enhancing the bioavailability of hydrophobic drugs by forming nanoparticles. The general hypothesis is that the physicochemical properties of the polymer will affect the colloidal stability, encapsulation efficiency and absorption of hydrophobic drugs. The main aims of the project are as follows: a) to examine the feasibility of using GCPQ with different characteristics, for the oral and subcutaneous delivery of CUDC-101 and b) to examine the effect of N-(2-phenoxyacetamide)-6-O-glycolchitosan (GCPh) on the P-gp efflux of paclitaxel. GCPh, a new polymeric amphiphile was synthesized by conjugating glycol chitosan to phenoxy acetic acid. Paclitaxel and CUDC-101 were encapsulated with GCPh and GCPQ of different molecular weights and hydrophobicity. The in vivo oral drug absorption profile for paclitaxel-GCPh nanoparticles and paclitaxel-Taxol® nanoparticles were determined in mice with and without verapamil, a P-gp inhibitor. In another study, the oral and subcutaneous drug absorption profile for CUDC-101 – GCPQ nanoparticles were conducted in mice and rat models respectively. Results indicated that GCPh improved the oral absorption of paclitaxel by improving the dissolution and promoting particle uptake through enterocytes. Experiments with Taxol® suggested that it is possible to saturate the P-gp pumps by improving the drug’s dissolution. Oral absorption of CUDC-101 was poor due to the drug’s extremely poor water solubility. The subcutaneous absorption of CUDC-101 – GCPQ nanoparticles were excellent. The colloidal stability and absorption of these nanoparticles can be improved by increasing polymer concentration and its hydrophobicity. These nanoparticles also prolonged the life span of human A431 tumour bearing mice by 28 days (p < 0.001). To conclude, the new polymeric amphiphile (GCPh), capable of improving the oral absorption of BCS Class IV P-gp substrates was developed. A new strategy to nullify the P-gp efflux was developed. A clinically relevant subcutaneous dosage form for CUDC-101 was also successfully developed.
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Varon, Mauricio Pardo 1984. "Estudo de uma bomba centrífuga submersa (BCS) como medidor de vazão." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265668.
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Orientador: Antonio Carlos BannwartDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica e Instituto de Geociências
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Resumo: O Bombeio Centrífugo Submerso (BCS) é um dos métodos mais importantes de elevação artificial de petróleo, no Brasil e no mundo. A bomba de BCS é acionada por um motor elétrico acoplado diretamente ao eixo da bomba. Comumente, possui também um conjunto de sensores que fazem o monitoramento da operação do motor, além de outras variáveis próprias como, por exemplo, o ganho de pressão gerado pela BCS. Por outro lado, a operação remota do motor na superfície se dá através de um inversor de frequência que fornece, além da rotação, o consumo elétrico da BCS. A medição da vazão de líquido produzida por cada poço é tradicionalmente realizada com instrumentação especializada de alto custo. Dado que o sensor do motor da BCS e o inversor de frequência que a opera já fornecem informações utilizadas para o monitoramento do equipamento e para o gerenciamento do poço, a vazão de líquido local na BCS poderia ser determinada com base em curvas de desempenho previamente levantadas nas condições de operação esperadas. O ganho de pressão gerado pela BCS e a potência elétrica consumida pelo motor que a aciona são as variáveis de desempenho consideradas neste estudo para avaliar a incerteza da vazão de líquido local estimada através da bomba em diversas condições de operação (incluindo escoamento bifásico e viscoso). A avaliação é feita com base na norma API RP 11S2, que estabelece as práticas recomendadas para testes de BCS
Abstract: ESP (Electrical Submersible Pump) is one the most important artificial lift methods for oil in Brazil and worldwide. The centrifugal pump is driven by an electric motor directly coupled to the pump shaft. Commonly, also has a set of sensors that monitor the electric motor operation, and other variables themselves, for example, the pressure gain generated by the ESP. Moreover, the remote operation of the equipment at the surface is performed via a frequency inverter that provides, in addition to the rotation, the power consumption of the ESP. Measurement of liquid flow rate produced by each well is traditionally performed with specialized instrumentation costly. As the motor sensor and the frequency inverter that drives the ESP already provide information used for monitoring equipment and for managing the well, the local liquid flow rate in the ESP could be determined based on correlations with these data. The pressure gain generated by the ESP and electrical power consumed by the motor are the considered variables for this study to correlate with the flow rate of fluid produced and to assess the quality of the results by analyzing uncertainties. To achieve this, a series of performance curves are obtained at different operating conditions (including two-phase flow and viscous) to observe how the uncertainty of the results are affected by correlated variables. The assessment is based on the standard API RP 11S2, which establishes best practices for testing BCS
Mestrado
Explotação
Mestre em Ciências e Engenharia de Petróleo
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Oliveira, Marcos Kelvin Lira de, and 92-99404-7597. "Os efeitos da hibridização no crossover BCS-BEC com interações interbandas." Universidade Federal do Amazonas, 2018. http://tede.ufam.edu.br/handle/tede/6225.
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CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
In this work we discuss the behavior of a superconducting system described by a multiband model, so it is an extension of the BCS theory which describes well the low temperature superconductors. We consider the interbanding interaction, that is, the interaction between fermions that present different properties under the influence of hybridization, evaluating the crossover between the weak coupling (BCS) and the strong coupling (BEC) for symmetry type s Order parameter in T = 0 and in the presence of a hybridization. However, the objective of this work is to study superconductivity without a two-band model, with interband interactions, with the purpose of obtaining as equations for the superconducting Gaps and, concomitantly, to evaluate a development of the systems between the limit of weak couplings (BCS) and strong couplings (BEC) and estimate an influence that is a hybridization on the system. Using Zubarev's Green function method, we calculate interband superconducting order parameters and chemical potential as a function of the interaction 1/kpa, in order to obtain a complete study of the system. We explore the energies of excitation at the two limits of the coupling, considering their characteristics and we see that there is a discontinuity in the amplitude of the interband gap. Our results suggest that hybridization V acts at the expense of superconductivity, suppressing it, agreeing with other works, although this is not general, since some works show that V contributes to superconductivity up to a certain value and to other values, destroys it. We also notice that in interband interaction we have first and second order transitions and a tricritic point, in which We have the encounter of a first order line with a second order line.
Neste trabalho é tratado o comportamento de um sistema supercondutor descrito por um modelo multibandas, sendo isto uma extensão da teoria BCS a qual descreve bem os supercondutores de baixas temperaturas. Uma vez que a mesma se limita ao caso de uma única banda. Será Considerado a interação interbanda, isto é, a interação que se dá entre férmions que apresentam propriedades diferentes, sob a influência da hibridização, avaliando o crossover entre os limites de acoplamento fraco (BCS) até o acoplamento forte (BEC) para simetria tipo s do parâmetro de ordem em T = O. Portanto, o objetivo deste trabalho é estudar a supercondutividade no modelo de duas bandas, com interações interbandas, com o propósito de obter as equações para as amplitudes do gap supercondutor e, concomitantemente, avaliar a evolução dos sistemas entre o limite de acoplamentos fracos (BCS) e acoplamentos fortes (BEC) e estimar a influência que a hibridização tem sobre o sistema. Fazendo uso do método das funções de Green de Zubarev, calculamos os parâmetros de ordem supercondutor interbandas e o potencial químico como função da interação, a qual será descrita em termos do comprimento de espalhamento e do número de onda de Fermi, afim de obtermos um estudo completo do sistema. Exploramos as energias de excitação nos dois limites do acoplamento, considerando suas características e vimos que existe uma descontinuidade na amplitude do gap inter-banda. Nossos resultados sugerem que a hibridização V, atua em detrimento da supercondutividade, suprimindo-a, concor-dando com outros trabalhos, apesar de não ser isso geral, uma vez que alguns trabalhos mostram que V contribui para a supercondutividade até um determinado valor e para outros valores, a destrói. Percebemos também que na interação interbanda temos transições de primeira e segunda ordem e um ponto tricrítico, no qual temos o encontro de uma linha de primeira ordem com uma de segunda ordem. Este trabalho se baseia na tese do Professor Dr. Francisco Dinola.
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Hannan, Mohammad Abdul. "Sparse Processing Methodologies Based on Compressive Sensing for Directions of Arrival Estimation." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/278178.
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In this dissertation, sparse processing of signals for directions-of-arrival (DoAs) estimation is addressed in the framework of Compressive Sensing (CS). In particular, DoAs estimation problem for different types of sources, systems, and applications are formulated in the CS paradigm. In addition, the fundamental conditions related to the ``Sparsity'' and ``Linearity'' are carefully exploited in order to apply confidently the CS-based methodologies. Moreover, innovative strategies for various systems and applications are developed, validated numerically, and analyzed extensively for different scenarios including signal to noise ratio (SNR), mutual coupling, and polarization loss. The more realistic data from electromagnetic (EM) simulators are often considered for various analysis to validate the potentialities of the proposed approaches. The performances of the proposed estimators are analyzed in terms of standard root-mean-square error (RMSE) with respect to different degrees-of-freedom (DoFs) of DoAs estimation problem including number of elements, number of signals, and signal properties. The outcomes reported in this thesis suggest that the proposed estimators are computationally efficient (i.e., appropriate for real time estimations), robust (i.e., appropriate for different heterogeneous scenarios), and versatile (i.e., easily adaptable for different systems).
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Hannan, Mohammad Abdul. "Sparse Processing Methodologies Based on Compressive Sensing for Directions of Arrival Estimation." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/278178.
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In this dissertation, sparse processing of signals for directions-of-arrival (DoAs) estimation is addressed in the framework of Compressive Sensing (CS). In particular, DoAs estimation problem for different types of sources, systems, and applications are formulated in the CS paradigm. In addition, the fundamental conditions related to the ``Sparsity'' and ``Linearity'' are carefully exploited in order to apply confidently the CS-based methodologies. Moreover, innovative strategies for various systems and applications are developed, validated numerically, and analyzed extensively for different scenarios including signal to noise ratio (SNR), mutual coupling, and polarization loss. The more realistic data from electromagnetic (EM) simulators are often considered for various analysis to validate the potentialities of the proposed approaches. The performances of the proposed estimators are analyzed in terms of standard root-mean-square error (RMSE) with respect to different degrees-of-freedom (DoFs) of DoAs estimation problem including number of elements, number of signals, and signal properties. The outcomes reported in this thesis suggest that the proposed estimators are computationally efficient (i.e., appropriate for real time estimations), robust (i.e., appropriate for different heterogeneous scenarios), and versatile (i.e., easily adaptable for different systems).
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Thomson, Thomas Michael. "The death and life of the Little Mountain Housing Project : BC's first public housing community." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/30445.
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Opened in 1954, Vancouver’s Little Mountain Housing Project was the first public housing project in BC and among the oldest in Canada. For more than half a century, Little Mountain provided subsidized rental housing for low and moderate income families and seniors. Throughout its years, Little Mountain was at the forefront of housing policy in BC. Little Mountain’s initial development in the 1950s spelled out how the federal-provincial public housing partnership would operate in BC. In the 1970s Little Mountain was the first public housing project in Canada managed by a committee of tenants. And today Little Mountain continues to be on the leading edge of provincial housing policy as it is the first public housing project to be privatized and redeveloped under a new province-wide policy announced in 2007. Redevelopment and privatization have involved the displacement of 194 Little Mountain households and the demolition of all but one of the buildings at Little Mountain. The displacement of the tenants and the near total clearance of the large site are among some of the disturbing similarities between the redevelopment of Little Mountain and the old urban renewal programs of the mid-twentieth century. But unlike urban renewal, the redevelopment of Little Mountain is connected to neoliberal restructuring and the erosion of the welfare state. When Little Mountain is eventually rebuilt, it will feature a mixed-income community that will combine social housing tenants and market homeowners. Redevelopment has been justified, in part, on the basis that social mixing will create more social capital for the low-income families at Little Mountain. But this thesis shows that Little Mountain was already remarkably rich in social capital. In contrast to the stereotype of the ‘troubled housing project’, Little Mountain offered a very supportive, happy, and beautiful living environment. Ironically, displacement has isolated many of the tenants. Through an analysis of the distribution of benefits and losses of redevelopment to various relevant groups, this thesis shows that the Little Mountain tenants are being squeezed out of the benefits of redevelopment while bearing significant losses.
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Monte, Verde William 1987. "Estudo experimental de bombas de BCS operando com escoamento bifásico gás-líquido." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264613.
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Orientador: Antonio Carlos BannwartDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: A utilização de bombas centrífugas submersas (BCS) operando com a mistura gás-líquido é comum na indústria de petróleo. Para elevadas vazões de líquido e baixas frações de gás o desempenho da bomba é similar ao escoamento monofásico. No entanto, uma degradação severa no desempenho é observada para elevadas frações de gás. A presença de gás livre no escoamento causa instabilidades na curva de ganho de pressão versus vazão. A curva passa a exibir um ponto de máximo, conhecido como ponto de 'surging', sendo que para vazões abaixo desse ponto, ocorre uma acentuada queda no ganho de pressão e, portanto, na capacidade de bombeamento. O aumento da vazão de gás pode causar o bloqueio da área disponível ao escoamento no rotor da bomba, fazendo com que a vazão seja nula, fenômeno conhecido como 'gas locking'. Portanto, o conhecimento das condições operacionais onde ocorre o surging é de fundamental importância para a operação adequada da bomba. O objetivo deste trabalho é obter as curvas de desempenho (elevação, potência e rendimento) de BCS operando com misturas gás-líquido. Com esse propósito as curvas característica de um protótipo de BCS foram determinadas utilizando a mistura água-ar, com frações volumétricas de gás entre 0 e 10% em diferentes rotações, pressões de sucção e vazões de líquido. O protótipo de BCS foi desenvolvido a partir de uma bomba convencional permitindo a visualização do escoamento no interior da bomba. Um manuseador de gás também foi testado buscando determinar suas características operacionais. Os ensaios foram realizados em uma bancada de testes, onde foram medidas os parâmetros do escoamento (vazões de ar e água, pressão e temperatura na entrada e saída da bomba) e parâmetros mecânicos (torque de velocidade de rotação). Uma severa degradação no desempenho, e consequentemente no rendimento da bomba foram observados devido à presença de gás no escoamento. Os fenômenos de surging e gas locking também foram observados durante os testes. A velocidade de rotação e a pressão de sucção influenciaram a fração volumétrica onde o surging ocorre. O aumento da velocidade de rotação e da pressão de sucção desloca a fração volumétrica critica de gás para valores mais elevados, aumentando a faixa operacional da bomba
Abstract: The use of electrical submersible pumps (ESP) under gas-liquid flow is very common in the oil industry. At constant liquid flow rate a dramatic degradation on pump head is observed as gas flow rate increases. Natural instabilities of two-phase flow may cause the centrifugal pump to surge at rather low gas void fraction (GVF), as evidenced by a critical point in the pressure gain x flow rate curve, a phenomenon referenced as 'surging point'. Further increase in GVF may cause the gas to fill most of the pump impeller, making the liquid flow rate to decrease down to zero, a phenomenon known as 'gas locking'. Therefore, knowledge of the conditions for which the pump starts to surge is of utmost importance and can only be understood through experimental investigation. The goal of this work is to present the experimental ESP performance curves (head, brake horsepower and efficiency) when operating with gas-liquid mixtures. For that purpose the characteristic curves were determined for one prototype of ESP, operating with water and two-phase air-water mixtures with GVF ranging from 0 to 10 % at different rotational speed, intake pressure and liquid flow rate. The ESP prototype is designed to make possible the flow visualization inside the pump. The performance of a gas handler was also tested in order to determine their operational characteristics. Tests were carried out on an ESP testing bench, where flow parameters (air and water flow rates, pressure and temperature at the inlet and outlet of the pump) and mechanical parameters (shaft torque and speed) were measured. A significant decrease in pump head, and consequently in pump efficiency, was observed as the air fraction was increased. Phenomena like surging and gas locking were observed during these tests. The rotational speed and intake pressure affect the critical GVF at the surging conditions. Increasing the rotational speed and intake pressure moves de critical GVF to higher values extending the operational range the ESP
Mestrado
Explotação
Mestre em Engenharia de Petróleo
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Eneias, Ronivon Louren?o. "Acoplamento BCS em um l?quido de Luttinger em uma dimens?o." Universidade Federal do Rio Grande do Norte, 2015. http://repositorio.ufrn.br/handle/123456789/20579.
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Neste trabalho nos investigamos o efeito de um emparelhamento do tipo BCS para f?rmions livres sem spin, em 1 + 1 dimens?es. Usando t?cnicas de bosoniza??o testamos a exist?ncia de modos de quasipart?culas no estado supercondutor resultante. N?s calculamos a fun??o de Green de uma part?cula isolada, a fun??o de correla??o de pares e a condutividade ?ptica e mostramos como elas diferem das fun??es an?logas para quasipart?culas convencionais. N?s compararmos os nossos resultados com os resultados experimentais relacionados aos supercondutores de alta temperatura e mostramos que eles se encaixam qualitativamente bem com os modos de quasipart?culas observados nesses materiais.
In this work we investigate the e ect of a BCS-type pairing for free spinless fermions, in 1+1 dimension. Using bosonization techniques we test the existence of quasiparticle modes in the resulting BCS like superconducting state. We calculate the single particle Green's function, the pair correlation function, the spectral function and the optical conductivity and we show how they di er from their conventional quasiparticle analogues. We compare our results with the related experimental ndings for high temperature superconductors and we show that they t qualitatively well the observed quasiparticles modes in those materials.
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Adachi, Kyosuke. "Fluctuation and dimensionality effects on superconductivity in the BCS-BEC crossover regime." Kyoto University, 2019. http://hdl.handle.net/2433/242584.
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Hedden, Lindsay Kathleen. "Beyond full-time equivalents : gender differences in activity and practice patterns for BC's primary care physicians." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55858.
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There is widespread sentiment that British Columbia (BC) is facing a substantial shortage and a maldistribution of primary care physicians (PCPs). The increasing proportion of PCPs who are women has been cited as contributing to this complex problem, based largely on assumptions that female physicians work less, take time off to raise children, and retire earlier compared to their male counterparts. However, Canadian evidence supporting these assertions is lacking.
This thesis uses population-based, administrative data resources to undertake a comprehensive assessment of the potential impact of the increasing feminization of BC’s PCP workforce, focusing on gender differences in career trajectories, billing patterns, activity, patient and service mix, and scopes of practice. It consists of four components: a systematic review of existing literature; a longitudinal analysis of gender-specific remuneration and activity; a comparison of patient populations seen by male and female PCPs; and an examination of gender-driven differences in selected aspects of primary care practice.
The results of these analyses suggest that female PCPs have lower total remuneration, see fewer patients, and deliver fewer services annually compared to male PCPs; however, this gender-related activity gap is narrowing over time as male physicians are reducing their activity levels. Female physicians derive more of their income from direct clinical care delivery (rather than from clinical or non-clinical incentive payments) when compared to male physicians. The proportion of physicians’ total compensation derived from direct care delivery is declining, particularly for male physicians.
Results also show that female physicians have smaller overall practices and disproportionately treat younger, healthier patients. They are less likely to provide off-site and after-hours care, but more likely to include obstetrical care in their practices.
This thesis demonstrates that gender differences in primary care practice go beyond salary and service volumes. More robust measures of physician supply that address the implications of gender differences in patient mix, service mix, and practice style need to be developed as more evidence in these areas becomes available. The gender division of unpaid care work, household responsibilities, and work-life balance, and the implications for health human resource planning all deserve careful attention in future work.Medicine, Faculty of
Population and Public Health (SPPH), School of
Graduate
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Johansson, Joakim, and Fredrik Lauren. "Efficient Computational Procedure for the Analytic Continuation of Eliashberg Equations." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-226315.
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The superconducting order parameter and the mass renormalization function can be solved either at discrete frequencies along the imaginary axis, or as a function of continuous real frequencies. The latter is done with a method called analytic continuation. The analytic continuation can conveniently be done by approximating a power series to the functions, the Padè approximation. Studied in this project is the difference between the Padè approximation, and a formally exact analytic continuation of the functions. As it turns out, the Padè approximant is applicable to calculate the superconducting order parameter at temperatures sufficiently below the critical temperature. However close to the critical temperature the approximation fails, while the solution presented in this report remains reliable.
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Picanço, José Mário Barroso. "Modelo de suporte ao planejamento de manutenção do sistema de bombeio centrífugo submerso de um campo petrolífero de completação seca." Universidade Federal de Pernambuco, 2011. https://repositorio.ufpe.br/handle/123456789/4945.
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Previous issue date: 2011Esta dissertação apresenta uma aplicação do estudo da confiabilidade em dados de tempo de vida de poços produtores de óleo de completação seca equipados com bombeio centrífugo submerso. A variável resposta do estudo é o tempo de funcionamento do poço dentro de sua normalidade até apresentar a primeira falha relacionada ao equipamento de subsuperfície, que cause uma parada total no funcionamento do poço. O principal objetivo do estudo foi, com base em um conjunto de dados reais fornecidos pela companhia petrolífera, mensurar e verificar a viabilidade técnica e econômica de um sistema de manutenção programado baseado na política de substituição por idade. Também foi realizada estratificação dos dados visando a verificar a correlação de alguns fatores como localização do campo, razão água-óleo (RAO), faixa de vazão e motivo da falha no tempo de operações dos poços. Neste trabalho, foi feito um estudo retrospectivo com uma amostra composta por 330 eventos de poços-colunas que estavam em funcionamento no período de 1992 a 2010. A modelagem probabilística dos dados foi feita através do ajuste do modelo de regressão Weibull. Os resultados encontrados na aplicação do modelo foram considerados satisfatórios, gerando economias em relação ao regime antigo entre 8% e 13% e em valores monetários anuais bastante significativos para o campo de petróleo estudado
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Schaffer, Kirsten Nichole. "The Roles of RNA Dependent RNA Polymerase 1, 2, and 6 Against Geminiviruses." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1398944694.
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Vusovic, Olivera. "La langue du droit de l'Union européenne : étude linguistique comparée et traduction en français et en BCMS." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAC002.
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On effectue une analyse de la langue du droit de l’Union européenne (UE), en comparant, dans une visée contrastive, les tournures et structures caractéristiques du français avec celles du BCMS, et on aborde certaines problématiques liées à la traduction des textes juridiques de l’UE dans cette langue autrefois dénommée serbo-croate, et aujourd’hui connue sous un sigle reprenant les initiales des dénominations : bosniaque, croate, monténégrin et serbe. Cette étude se fonde sur une approche analytique d’un corpus parallèle constitué de quatre versions linguistiques (anglaise, française, croate et monténégrine) de l’Accord de stabilisation et d’association entre les Communautés européennes et leurs États membres d’une part, et la République du Monténégro, d’autre part. Ce document se rattache au droit conventionnel de l’UE et constitue le pilier du processus de stabilisation et d’association dans le cadre duquel s’effectue l’intégration des pays des Balkans occidentaux au sein de l’UEWe analyse EU legal language, compare and contrast French characteristic structures with those of BCMS and examine problems related to the translation of EU legal texts into this language, formerly named Serbo-Croatian and today known by the initials of the names: Bosnian, Croatian, Montenegrin and Serbian. This research is based on an analytical approach to a parallel corpus consisting of four language versions (English, French, Croatian and Montenegrin) of the Stabilisation and Association Agreement between the European Communities and their Member States, of the one part, and the Republic of Montenegro, of the other part. This document is part of the EU’s international agreements which is a pillar of the Stabilisation and Association process, the framework for the integration of Western Balkan countries into the EU
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Machando, Debra. "Neurocognitive screening following acquired brain injury: an adaptation of the Birmingham Cognitive Screen for Zimbabwe (Zim-BCoS)." Doctoral thesis, Faculty of Humanities, 2021. http://hdl.handle.net/11427/32763.
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Neuropsychology as a discipline has not taken root in low- and middle-income countries. Most neurocognitive tests used in these countries were developed and normed in high-income, mostly western countries. The psychometric robustness of these tests is often weak when they are used on low to middle-income clinical populations. The objectives of this study were to select, adapt and generate normative data for a suitable neurocognitive screen for use in Zimbabwe. To achieve these objectives, we divided the study into 4 phases. In Phase 1 of the study, we did a systematic review that identified 83 neurocognitive assessment instruments commonly used in low- and middle-income countries on patients who have suffered a stroke. From these instruments, we selected, adapted and normed the Birmingham Cognitive Screen (BCoS; Humphreys al., 2012) through phases 2 to 4 of this study. The screen offers a robust and sufficiently broad but shallow assessment tool for cognitive deficits across key cognitive domains commonly impaired following a stroke. In particular, in Phase 2 of the study, we evaluated the cross-cultural sensitivity of BCoS on healthy participants (N=105). We then performed surveys using the Delphi method on a panel of experts to culturally adapt BCoS for use in Zimbabwe (Zim-BCoS). We evaluated the inter-rater and test-retest reliability of the translated and validated Zim-BCoS and also compared its agreement with the original BCoS version to determine its robustness. In Phase 3, we evaluated the effects of demographic variables on performance on the cognitive domains assessed by Zim-BCoS. To do this, we performed multiple linear regression analyses to calculate regression-based norms using scores from a sample of healthy participants (N=412). From these analyses, participants' age, level of education and sex had significant effects, mainly on subtests in the language cognitive domain (Picture Naming, Sentence/Word Reading/Writing and Instruction Comprehension). In Phase 4 of the study, we performed neurocognitive assessments using Zim-BCoS (and other tests) to assess and determine the frequency of specific neurocognitive deficits in patients who had suffered a stroke and were attending two major hospitals in Harare, Zimbabwe's capital city (N=103). We also compared the performance of these patients to a matched control sample (N=103). To determine the psychometric stability of Zim-BCoS we determined its validity and reliability by comparing scores on its subtests to parallel neurocognitive tests that assess similar cognitive domains. We also assessed the predictive value of Zim-BCoS on patients' neuropsychiatric and functional outcomes. We evaluated the convergence and predictive validity as well as the inclusivity of Zim-BCoS to assess patients with aphasia. We used the Zim-BCoS test scores to establish prevalence rates of cognitive deficits and other post-stroke sequelae in the sample of patients with stroke. We also assessed the predictive value of ZimBCoS subtests on patients' neuropsychiatric and functional outcomes. All comparisons of ZimBCoS against standard cognitive tests and post-stroke sequelae measures had statistically significant convergence, predictive validity and inclusivity. In this study, we demonstrated the utility of Zim-BCoS for assessing cognitive impairment in patients who have suffered a stroke, particularly in resource poor contexts typical of low-income countries. We concluded that ZimBCoS is a robust neuropsychological screen suitable for research and clinical use in Zimbabwe. The screen has the potential to offer a cost effective and easy to use neurocognitive screen for patients with acquired neurological changes in low-income countries in Southern Africa.
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Smith, Timothy D. Tomasini Nathan. "Profiles of Bowl Championship Series (BCS) bowl bound teams from 1998 through 2004." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,122.
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Thesis (M.A.)--University of North Carolina at Chapel Hill, 2006.Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements for the degree of Master of Arts in the Department of Exercise and Sport Science (Sport Administration)." Discipline: Exercise and Sports Science; Department/School: Exercise and Sport Science.
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Regal, Cindy. "Experimental realization of BCS-BEC crossover physics with a Fermi gas of atoms." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3239439.
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Altmeyer, Alexander. "Collective oscillations of an ultracold quantum gas in the BEC-BCS crossover regime." München Verl. Dr. Hut, 2007. http://d-nb.info/987775944/04.
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Böttcher, Igor [Verfasser], and Christof [Akademischer Betreuer] Wetterich. "Dimensional BCS-BEC crossover in ultracold Fermi gases / Igor Böttcher ; Betreuer: Christof Wetterich." Heidelberg : Universitätsbibliothek Heidelberg, 2014. http://d-nb.info/1180301226/34.
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