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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The Limiting Background in a Detector Testing Facility for SuperCDMS at SNOLAB

LIU, SHUO 01 February 2011 (has links)
SuperCDMS is the next generation of the Cryogenic Dark Matter Search experiment (CDMS), aimed at the detection of the Weakly Interacting dark matter Particles (WIMPs) with the use of phonon and ionization signals in germanium detectors operated at about 40 mK. The current experiment is operating in the Soudan underground laboratory in northern Minnesota. However, due to limitation of cosmic ray muons, in the next stage of SuperCDMS, the whole experiment will be moved to a deeper site at SNOLAB. This could reduce the influence of extraterrestrial high energy particles to a negligible level, leaving the natural radioactivity locally existing in the laboratory wall rock as the dominating background source. Along with this relocation, newly designed detectors will be implemented to further increase the sensitivity. The prototype of this kind of detector has been manufactured, but it needs to be carefully tested prior to its formal application. To thoroughly examine its performance, especially in an environment that is less affected by cosmic rays, a new detector testing facility is to be built underground at SNOLAB (STF) surrounded by a water tank serving as the passive shield against the natural radioactivity. A series of Monte Carlo simulations have been performed to investigate the effectiveness of the water tank shield, the background level and also the energy spectra of events in the detectors. The goal of 1 neutron/day and 1 Hz of gammas for external sources can be achieved. / Thesis (Master, Physics, Engineering Physics and Astronomy) -- Queen's University, 2011-02-01 10:31:34.688
2

Utilização de ontologias para busca em base de dados de acórdãos do STF / Using an ontology for searching the decisions of the Brazilian Supreme Court

Oliveira, Rafael Brito de 30 November 2017 (has links)
O Supremo Tribunal Federal (STF) mantém uma base de documentos que relatam suas decisões tomadas em todos os julgamentos passados. Esses documentos são chamados de acórdãos e compõem a jurisprudência do STF, pois abordam assuntos que dizem respeito a constituição. Eles estão disponíveis a todos, porém encontrar uma informação relevante é uma tarefa árdua, que muitas vezes exige um nível de conhecimento da área jurídica. O STF oferece um mecanismo de busca para esses acórdãos, porém o mecanismo atual utiliza uma forma tradicional de busca baseado em formulários com inúmeros campos a serem preenchidos e selecionados, se assemelhando a um questionário, no qual cada pergunta está relacionada a filtragem de certas informações em toda a base persistida em bancos de dados relacional. Esta abordagem do ponto de vista do usuário é pouco intuitiva e em alguns casos imprecisa. Com base nesta dificuldade, neste trabalho é apresentada uma abordagem de um mecanismo de pesquisa que utiliza uma ontologia para a criação de uma representação do conhecimento contido nos acórdãos do STF. Sua construção é feita com o auxílio da tecnologia OBDA (Ontology Based Data Access), que permite a criação de uma camada semântica sobre uma base de dados relacional, o que possibilita a realização de consultas em SPARQL. / The Brazilian Supreme Federal Court (STF) keeps in its database documents describing past judgments decisions. This documents are called acórdãos (decisions) and are part of STF jurisprudence because they deal with matters that concern the Federal Constitution. They are publicly available, but finding relevant information is often requires a high level of knowledge about the juridical area. The STF offers a search mechanism for the acórdãos, but through a form with a lot of fields to be filled, looking like a questionnaire, where each question is related with certain filtered data persisted over the relational database. This approach from users perspective, is unintuitive and in some cases inaccurate. For this reason, this work presents an approach where the search mechanism is based on an ontology that represents the knowledge inside the STF acórdãos. Other technology used here is the OBDA (Ontology Based Data Access), that allows the use of an abstract semantic layer over a relational database, and with it is possible to query the database with SPARQL.
3

Utilização de ontologias para busca em base de dados de acórdãos do STF / Using an ontology for searching the decisions of the Brazilian Supreme Court

Rafael Brito de Oliveira 30 November 2017 (has links)
O Supremo Tribunal Federal (STF) mantém uma base de documentos que relatam suas decisões tomadas em todos os julgamentos passados. Esses documentos são chamados de acórdãos e compõem a jurisprudência do STF, pois abordam assuntos que dizem respeito a constituição. Eles estão disponíveis a todos, porém encontrar uma informação relevante é uma tarefa árdua, que muitas vezes exige um nível de conhecimento da área jurídica. O STF oferece um mecanismo de busca para esses acórdãos, porém o mecanismo atual utiliza uma forma tradicional de busca baseado em formulários com inúmeros campos a serem preenchidos e selecionados, se assemelhando a um questionário, no qual cada pergunta está relacionada a filtragem de certas informações em toda a base persistida em bancos de dados relacional. Esta abordagem do ponto de vista do usuário é pouco intuitiva e em alguns casos imprecisa. Com base nesta dificuldade, neste trabalho é apresentada uma abordagem de um mecanismo de pesquisa que utiliza uma ontologia para a criação de uma representação do conhecimento contido nos acórdãos do STF. Sua construção é feita com o auxílio da tecnologia OBDA (Ontology Based Data Access), que permite a criação de uma camada semântica sobre uma base de dados relacional, o que possibilita a realização de consultas em SPARQL. / The Brazilian Supreme Federal Court (STF) keeps in its database documents describing past judgments decisions. This documents are called acórdãos (decisions) and are part of STF jurisprudence because they deal with matters that concern the Federal Constitution. They are publicly available, but finding relevant information is often requires a high level of knowledge about the juridical area. The STF offers a search mechanism for the acórdãos, but through a form with a lot of fields to be filled, looking like a questionnaire, where each question is related with certain filtered data persisted over the relational database. This approach from users perspective, is unintuitive and in some cases inaccurate. For this reason, this work presents an approach where the search mechanism is based on an ontology that represents the knowledge inside the STF acórdãos. Other technology used here is the OBDA (Ontology Based Data Access), that allows the use of an abstract semantic layer over a relational database, and with it is possible to query the database with SPARQL.
4

Svenska Turistföreningens marknadsföring : Hur man inom STF arbetar med att attrahera utländska gäster

Dickmann, Marga Elisabeth January 2013 (has links)
Hur arbetar den svenska turistföreningen (STF) med att attrahera utländska turister till Sverige? Hur arbetar Kaptenshamn Hotell & Vandrarhem Halmstad som STF-anslutet vandrarhem med marknadsföring på lokal nivå? Lyckas STF att attrahera utländska gäster med hjälp av sin marknadsföring? Uppsatsen innehåller både kvalitativa och kvantitativa metoder. Den kvantitativa enkätundersökningen stödjer de kvalitativa intervjuerna med STFs marknadsföringsansvarig och en vandrarhemsägare. STF håller fokus på den svenska marknaden och ser därför inte utländska gäster som en målgrupp inom sin marknadsföring. På lokal nivå har ägaren av vandrarhemmet insett potentialen, men måste bli bättre att nå ut till sina potentiella gäster.
5

Conferindo legitimidade: a participação democrática no controle concentrado de constitucionalidade no STF

Amaral, Larissa Maciel do January 2014 (has links)
AMARAL, Larissa Maciel do. Conferindo legitimidade: a participação democrática no controle concentrado de constitucionalidade no STF. 2014. 138 f.: Dissertação (mestrado) - Universidade Federal do Ceará, Programa de Pós-Graduação em Direito, Fortaleza-CE, 2014. / Submitted by Natália Maia Sousa (natalia_maia@ufc.br) on 2015-06-16T12:42:06Z No. of bitstreams: 1 2014_dis_lmamaral.pdf: 700474 bytes, checksum: f5eb606fdbb6b2c67fb300ff172da64a (MD5) / Approved for entry into archive by Camila Freitas(camila.morais@ufc.br) on 2015-06-16T16:20:35Z (GMT) No. of bitstreams: 1 2014_dis_lmamaral.pdf: 700474 bytes, checksum: f5eb606fdbb6b2c67fb300ff172da64a (MD5) / Made available in DSpace on 2015-06-16T16:20:35Z (GMT). No. of bitstreams: 1 2014_dis_lmamaral.pdf: 700474 bytes, checksum: f5eb606fdbb6b2c67fb300ff172da64a (MD5) Previous issue date: 2014 / The judicial function in modern democracy it´s not the same than after. Modern democracy evolves a participatory democracy, which besides protecting citizens rights to liberty, equality and solidarity, denotes a more intense participation of citizens and that goes beyond participation through voting. The Legitimacy can not be mean iqual votes, simply. Having two of the Powers constituted, elected, and disbelief in representation by citizens, I´s not correct who that the elective model would be an exit to the legitimacy of the judiciary. Democratics Inflows and pluralism must also be present in the judiciary, especially in Judicial Cases of Concentrate Control of Constitution, which contains true normative purposes. The procedural plurality, combined with a good foundation will be ensure legitimacy to the judiciary in modern democracies. / O papel da função judicial na democracia moderna foi remodelado. A democracia moderna evolui para uma democracia participativa, que além de resguardar aos cidadãos direitos de liberdades, igualdades e solidariedades, denota uma participação mais intensa dos cidadãos e que ultrapassa a participação mediante voto. A Legitimidade não pode ser traduzida em votos, simplesmente. Havendo dois dos Poderes constituídos, eleitos, e repletos de descrença na representatividade pelos cidadãos, não entende-se que o modelo eletivo seria uma saída à legitimidade do Poder Judiciário. Os influxos democráticos e de pluralismo precisam estar presentes também no Judiciário, principalmente nas Ações de Controle de Constitucionalidade Concentrado, que contém verdadeiros efeitos normativos. A pluralidade procedimental, aliada a uma boa fundamentação conferirá maior legitimidade ao Poder Judicial nas democracias modernas.
6

Hypervelocity Impact Experimentation of a Novel Micrometeoroid/Orbital Debris Shielding Concept Imbibed with Rheologically Characterized Shear Thickening Fluids

Warren, Justin Marshall 14 December 2018 (has links)
Spacecraft are vulnerable to hypervelocity impacts (HVIs) from micrometeoroid/orbital debris (MMOD) while in space and must mitigate these using shielding. In this research aluminum honeycomb core sandwich panels filled with a shear thickening fluid (STF) were developed as a novel MMOD shielding concept. STFs display a marked rise in viscosity with increasing shear rate above a critical shear rate. The results of HVI experiments with impact velocities of ~4.8 km/s or ~6.8 km/s at 80oC or 21oC showed that incorporating a STF into shielding, as opposed to the STF’s liquid phase alone, can reduce damage to the core and the likelihood of back-side facesheet perforation in the event of HVI. STFs can be subjected to a significant temperature variation in many applications such as the HVI experiments in this research or when deployed on the surface of a spacecraft. The effect of temperature on the shear-thickening behavior was investigated using four low molecular weight polymeric glycols/fumed-silica suspensions. The dispersed phase volumeraction, its surface chemistry, and the chemical compositions of the suspending media were varied in a series of steady shear rheological characterizations over a range of temperatures. It was thought that hydroclustering mechanism initiated the onset of shear thickening, and this onset was shown to be more closely correlated to a critical shear rate rather than a critical shear stress. Evidence of the hydroclustering mechanism was sought using small angle neutron scattering (SANS) experiments. SANS steady state rheological characterization experiments were carried out on five low molecular weight polymeric glycols/fumed-silica STFs at the NIST Center for Neutron Research. The SANS experiments were conducted at shear rates below the critical shear rates, at the critical shear rates, and during shear thickening. In all the SANS experiments, the results showed an increase in scattering intensity with increasing shear rates indicating an evolution of the suspension microstructure consistent with the formation of hydroclusters.
7

[en] THE JUDICIALIZATION OF MEGAPOLITCS IN BRAZIL: THE PROTAGONIST ROLE OF THE BRAZILIAN SUPREME COURT IN THE IMPEACHMENT OF PRESIDENT ROUSSEFF / [pt] A JUDICIALIZAÇÃO DA MEGAPOLÍTICA NO BRASIL: O PROTAGONISMO DO STF NO IMPEACHMENT DA PRESIDENTE DILMA ROUSSEFF

PEDRO DE ARAUJO FERNANDES 16 August 2017 (has links)
[pt] O Brasil passou, em 2016, por um processo de ruptura institucional. Esta dissertação examina o papel desempenhado pelo Supremo Tribunal Federal no processo que culminou com o impeachment da ex-presidente Dilma Rousseff à luz do conceito de Judicialização da Megapolítica, do cientista político Ran Hirschl. Através da análise das decisões do STF e do contexto político em que elas foram tomadas, busco demonstrar que esta corte adotou uma postura ativista que foi decisiva para a queda da ex-presidente. Esta postura ativista do STF contou com o apoio das elites políticas, econômicas e sociais nacionais, dado que abria caminho para viabilizar, de forma encoberta, uma agenda política que fora seguidamente derrotada ao se apresentar mais abertamente nas disputas eleitorais nacionais. Tal desfecho sugere que as leituras positivas do fenômeno da judicialização da política na literatura nacional - no período em que ele se associava à expansão de direitos nos marcos da democratização do país - podem ter subestimado os riscos que esse processo representava para o próprio regime democrático ao se deslocar para temas da megapolítica. / [en] Brazil faced a major institutional rupture in 2016. This dissertation examines the role played by the Brazilian Supreme Court (STF) in the process that led to the impeachment of President Dilma Rousseff, based on Ran Hirschl s concept of the Judicialization of Megapolitics. I discuss the Court s decisions and the political context in which they were taken. Based on these, I argue that STF s activist stance had a decisive influence on the President s dismissal from office. The Court s activist stance had the support of Brazil s political, economic and social elites, who saw in it an opportunity to forward, in a hidden fashion, a political agenda that had faced successive defeats in the more open terrain of national elections. This outcome suggests that the more favorable initial interpretations of the Judicialization of Politics in Brazilian Social Sciences literature (when the phenomenon was generally associated to the expansion of citizen rights in the context of democratization) might have underestimated the risks it entails for democratic regimes when it penetrates the realm of Megapolitics.
8

Wavelets and short time fourier transforms on ultrasonic doppler signals for pregnancy determination in sheep

Hertzog, P.E., Jordaan, G.D. January 2006 (has links)
Published Article / The reproductive status of animals is of utmost importance to the modern farmer. Decisions concerning the management of the flock are influenced by the knowledge of the percentage of animals that are pregnant at any specific time. The aim of the project was to gain knowledge for the development of an instrument that is affordable and with which a farmer can do pregnancy determination himself/herself, thereby enabling him/her to make the correct management decisions. Experimental data were obtained from pregnant Dorper ewes with the aid of a portable Doppler instrument. Using real data as input, simulations of Wavelet and Short Time Fourier Transforms (STF) were done in MathCAD. In the simulations known levels of noise were added to the Doppler signals. Satisfactory results were obtained from the simulations of Wavelet Transforms. In the simulation of the Wavelet Transforms, signals with a SNR of -6.5 dB were successfully identified. It can thus be concluded that Wavelet Transforms can be used successfully for the detection of the fetal heartbeat in noisy ultrasonic Doppler signals.
9

O princípio jurídico da presunção de inocência ou não culpabilidade penal: um estudo acerca do alcance normativo do artigo 5º, inciso LVII, da Constituição Federal, na aplicação judicial na dinâmica da jurisprudência do Supremo Tribunal Federal, sob as luzes do magistério doutrinário

Rigo, Pablo Borges 31 October 2012 (has links)
Submitted by Haia Cristina Rebouças de Almeida (haia.almeida@uniceub.br) on 2015-02-19T13:26:30Z No. of bitstreams: 1 61000952.pdf: 883151 bytes, checksum: 0e67225e7f64b11954defd9ec3f83a20 (MD5) / Made available in DSpace on 2015-02-19T13:26:30Z (GMT). No. of bitstreams: 1 61000952.pdf: 883151 bytes, checksum: 0e67225e7f64b11954defd9ec3f83a20 (MD5) / O presente estudo aborda a temática: O PRINCÍPIO JURÍDICO DA PRESUNÇÃO DE INOCÊNCIA OU NÃO CULPABILIDADE PENAL: um estudo acerca do alcance normativo do artigo 5º, inciso LVII, da Constituição Federal, na aplicação judicial na dinâmica da jurisprudência do Supremo Tribunal Federal, sob as luzes do magistério doutrinário. A proposta tem como objeto analisar o tema sob seu aspecto doutrinário e jurisprudencial. A justificativa desse trabalho é estabelecer um padrão de interpretação e aplicação do princípio a partir de sua constitucionalização em 1988. Para a confecção da dissertação foi utilizada a metodologia compilativa no primeiro e segundo capítulos. A intenção buscada com essa metodologia é trazer, na visão dos autores estudados, como o direito é criado, interpretado e aplicado, e como o princípio da presunção de inocência é analisado dentro do ordenamento. A partir desse prisma, é que será analisado o tema da presente dissertação. Já no terceiro capítulo foi realizada a análise de alguns julgados expostos no artigo 5º, inciso LVII, da Constituição Federal, comentado pela jurisprudência constitucional da suprema corte, com o objetivo de demonstrar o pensamento da corte sob o tema. Buscou-se com tal metodologia ressaltar, principalmente, os argumentos que conduziram os ministros a alcançarem a fundamentação necessária ao posicionamento adotado nos mesmos. Trazendo, dessa forma, a visão que o Supremo Tribunal Federal tem sobre esse assunto, com a finalidade de buscar segurança jurídica nas decisões futuras sobre o tema.
10

Relationships management in hospitality industry. : STF Svenska Touristförening.

Shalimov, Aleksandr, Godwin, Calistus January 2013 (has links)
Abstract Title: Relationships management in hospitality industry, STF Svenska   Touristförening.   Level: Final assignment for Master Degree in Business Administration   Author: Aleksandr Shalimov , Calistus Godwin   Supervisor: Ernst Hollander   Date: 2013.01   Aim:  The aim of the research is to investigate STF relationships management strategy and networking ability. This research illuminates conceptual understanding of the STF’s network and relationships management strategy.    Method: In order to provide answers to the research question was used case study approach. Qualitative research method was applied, face to face interviews were conducted and in some cases email and telephone interviews was also used. Using cluster sampling, 9 people who have different backgrounds and relations to STF was interviewed. To properly analyze and present this complex relationships phenomenon, narrative approach was used, considered to be the most appropriate to work with, due to the huge amount of qualitative data.   Result & Conclusions: The research showed the existence of complex relationships between STF (Svenska Touristförenengen) and different actors that are involved with STF within its market activities. Companies that are involved in the STF network, at the same time involved in the process of management of relationships, activities and network structure. Development of the network depends on the companies’ abilities to develop mutual relationships (network threads). This requires understanding of the company’s network and abilities to form network. The development of relationships management strategy is the core competence of the STF. In conclusion, looking at all the relationship that STF has built, it could be said that all have being focal to its network building but to a varying degree.  Moreover within applied the study, it was noticed that STF during its 125 years of existence, has facilitated the development of tourism, infrastructure, business, sports, education, and cultural life of the country. It has created and developed social and economic relations, and communication channels. STF plays the role of an initiator, originator, pioneer and cooperator, even as a fellow worker in creating national movements and new trends.   Suggestions for future research: The investigation has been started having in mind Relationships, Outsourcing and Networking theories as anchor theories to be used, but after a while, it turned out that Networking theory and Franchising theory could be used to investigate deeply into the relationships phenomenon with the actors in this case.  But still within the research, it was noticed that some aspects of franchising model was not working properly and sometimes do not meet both STF and Franchisee`s expectations. Therefore suggestion for closer and deeper investigations of relationships pattern between STF and its franchisees is recommended in order to facilitate the development of more viable, functional and effective ways of cooperation. Moreover triangulation is a strategy that increases the validity and reliability of research, so it could be considered for the further research.     Contribution of the thesis: Currently, under the influence of globalization in the social and economic environment, more and more attention is being paid to the study of various relationships and communications theories, for example the development of CRM, Outsourcing and Networking theories. This study involves a closer look on some aspects of the interaction of social and economic environment, particularly the development of social and business networks. The concept of STF could be used to develop other business ideas or even exported to emerging markets, base on a successful strategic implementation of the concept. STF pattern of activities shows that the creation of such organizations as STF and investigative related issues, may contribute to the development of the tourism industry both nationally and internationally. To STF and the Swedish Tourism Board, (tillvexverkert) researches could help in a lot ways by encouraging more research work to improve and better the already existing infrastructures, improve on the services and communications channels.   Key words: STF (Svenska Touristförening), Networking, Relationships, Hospitality Industry, Tourism, Association.

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