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Deveaux, Christina Anna [Verfasser], Fouad [Akademischer Betreuer] Rami und Peter [Akademischer Betreuer] Senger. „Design of the micro vertex detector of the CBM experiment: development of a detector response model and feasibility studies of open charm measurement / Christina Anna Dritsa. Gutachter: Fouad Rami ; Peter Senger. Betreuer: Fouad Rami ; Peter Senger“. Frankfurt am Main : Univ.-Bibliothek Frankfurt am Main, 2014. http://d-nb.info/105346830X/34.
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Junek, Martin. „Metody specifikace kyberfyzikálních systémů“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442854.
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The aim of this diploma thesis is to analyse the advantages and disadvantages of different types of description of cyberphysical systems. It also concerns a description of the selected method that meets most of the current requirements for CPS design. In the practical part, attention is paid to the elaboration of an example for the specification of a selected cyberphysical system.
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Siegl, Thomas. „Development of an on-ramp model for use in microscopic traffic simulation models“. Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-93627.
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Traffic simulation models have become more and more important for the traffic industry over the past few years. This thesis enables the microscopic traffic simulation model of Johan Olstam to include merging areas in its simulation runs and thereby takes the model one step further on its way to realistically simulate vehicles in all kinds of traffic situations. A state-of-the-art literature review as well as an analysis of Olstam’s model are used for identifying possible weaknesses of the current merging behaviour model. Based on this knowledge, an improved merging behaviour model is developed. This model has to perform merging manoeuvres as realistically as possible since the microscopic model’s purpose is to simulate surrounding vehicles in driving simulators. By implementing new concepts in the gap selection, gap acceptance, calculation of the merge acceleration and courtesy deceleration as well as adding new functions allowing cooperative lane changes and merge anticipation, the original merging behaviour model has been improved significantly. The enhanced model is analysed and verified by comparing its results to real world data and data of the original model, respectively, as well as by studying simulated vehicle trajectories.
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Buckley, James E. „Computational mechanics of the full-scale and model-scale roll-on, roll-off (RORO) stern ramp and experimental modal analysis of the model-scale ramp and support“. Thesis, Springfield, Va. : Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA396578.
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Dalakos, Antonios. „A coupled hydrodynamic/structural model for ship/ramp/barge interface“. Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA401389.
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Thesis (M.S. in Mechanical Engineering) Naval Postgraduate School, December 2001.Thesis Advisor(s): Papoulias, Fotis A. "December 2001." Includes bibliographical references (p. 125). Also available in print.
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Lopes, Iury Nunes. „Equação mestra microscópica para o modelo de Rabi“. Universidade Federal de São Carlos, 2013. https://repositorio.ufscar.br/handle/ufscar/5051.
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Previous issue date: 2013-02-27Financiadora de Estudos e Projetos
The Rabi model is the most complete one has to describe the interaction between radiation and matter. However, as it is difficult to obtain the exact solution to this model, many of recent atom-field studies have used the Jaynes-Cummings model, which eliminates the "counter rotating" terms from the Rabi Hamiltonian in an approach known as "rotating wave approximation". This approach was very precise to describe many experiments in quantum optics area in the past two decades, especially in the context of cavity quantum electrodynamics, where the atom-field coupling g is very weak compared to the atomic transition frequency ω0 and the cavity field frequency ωc. However, in recent experiments in the context of circuit quantum electrodynamics, the atom-field coupling can be comparable to the atom and field frequencies so that the rotating wave approximation is no longer valid. A first goal of the present work is to examine the validity of the rotating-wave approximation in the context of circuit quantum electrodynamics. We also take into account the dissipation of the system, and to do that we have analyzed two different models: a phenomenological approach where the master equation is derived by adding the free decay of the atom and the field, regardless of the interaction between them, and another microscope, where the master equation is derived by taking into account the interaction between the atom and the field. We then investigate what happens when one has two atoms interacting with the same field in the cavity, considering, for example, the "spontaneous" generation of correlations between the atoms mediated by the field, that is, assuming initially all subsystems (atoms and field) in their ground states, we study the dynamics of correlations generated between the atoms. To quantify those correlations we employ measures as quantum discord and entanglement of formation.
O modelo de Rabi é o mais completo que se tem para entender a interação entre radiação e matéria. Entretanto, por não se ter uma solução exata para esse modelo, muitos trabalhos recentes têm recorrido ao modelo de Jaynes-Cummings, que elimina do Hamiltoniano do sistema os termos contragirantes , em um processo conhecido como Aproximação de onda girante . Essa aproximação tem sido bastante precisa para descrever os experimentos na área de Óptica Quântica nas últimas duas décadas, especialmente no contexto da Eletrodinâmica Quântica de Cavidades, onde o acoplamento átomo-campo g é muito fraco comparado com a frequência de transição atômica ω0 e a frequência da cavidade ωc. Entretanto, em recentes experimentos no contexto de Eletrodinâmica Quântica de Circuitos, o acoplamento átomo-campo tem atingido valores comparáveis aos das frequências do átomo e do campo, de modo que a aproximação de onda girante deixa de ser válida. É nesse contexto que esse trabalho se encontra, isto é, avalia as situações em que a aproximação de onda girante deixa de ser válida e mostra, através da análise de algumas propriedades do sistema, as diferenças devidas à escolha do modelo. Levamos também em conta a dissipação do sistema, e para isso analisamos dois modelos distintos: um fenomenológico, onde a equação mestra é deduzida adicionando-se os decaimentos do átomo e do campo independentemente da interação entre eles, e outro microscópico, onde a equação mestra é deduzida considerando-se a interação entre o átomo e o campo. Investigamos, então, o que acontece quando se tem dois átomos interagindo com o mesmo campo na cavidade, analisando, por exemplo, a geração "espontânea" de correlações entre os átomos mediada pelo campo, isto é, assumindo que todos os subsis- temas (átomo e campo) estão inicialmente no seus estados fundamentais, nós estudamos a dinâmica das correlações geradas entre os átomos. Para quantificar essas correlações utilizamos medidas de discórdia quântica e emaranhamento de formação.
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Kondyli, Alexandra. „Breakdown probability model at freeway-ramp merges based on driver behavior“. [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024857.
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Fitzgerald, Amanda R. „An Examination of Current and Past Recognized ASCA Model Program (RAMP) Recipients and Their Experiences with Pursuing the Re-ramp Designation“. Thesis, University of Pennsylvania, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10974695.
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To highlight exemplary school counseling programs, in 2003, the American School Counselor Association developed the Recognized ASCA Model Program (RAMP) as an acknowledgement for those schools that have implemented a comprehensive school counseling program based on the ASCA National Model (American School Counselor Association, 2016b). Since the inception of the RAMP program, 668 schools have earned the RAMP designation. Of those, 189 have current RAMP status and 469 have had RAMP status at some point but have let it lapse.
The purpose of this study was to examine the factors that contributed to a school’s decision to continue or discontinue the pursuit of subsequent RAMP designations. This mixed-methods study surveyed 238 schools of various levels (e.g., elementary, middle and high school) located in 36 states. Following the analysis of the questionnaire data, six in-depth interviews were conducted. Two of the interviews were with schools that had earned multiple-consecutive RAMP designations, two were with schools that earned multiple RAMP designations in non-consecutive years, and two were with lapsed RAMP schools.
The findings of this study indicate that current RAMP schools and lapsed RAMP schools that did not have significant turnover within the counseling department from the time of their original RAMP designation, report to be currently implementing comprehensive school counseling programs regardless of their current RAMP status. Additionally, schools that were unwilling to pursue subsequent Re-RAMP designations were likely to cite multiple barriers or challenges that include: time, a lack of support or understanding from school administrators and staffing turnover. Finally, the results indicate that schools are more willing to pursue the Re-RAMP designation if they have a variety of supports in place and perceive the benefits of the designation to be valuable.
Implications of these findings for the association’s management, improvement and support of the Recognized ASCA Model Program are discussed. Further areas for research regarding the various components of comprehensive school counseling programs are suggested.
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Wirstam, Hans. „A probabilistic decision model for ore charcterization and mine planning : Ramp location“. Licentiate thesis, Luleå, 1990. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25663.
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Al-Obaedi, Jalal Taqi Shaker. „Development of traffic micro-simulation model for motorway merges with ramp metering“. Thesis, University of Salford, 2011. http://usir.salford.ac.uk/26540/.
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This thesis focuses on the development of a micro-simulation model for motorway merge sections. The aim is to study the effectiveness of applying some traffic management controls and particularly focuses on applying ramp metering (RM) systems. The new model has been developed based on car-following, lane changing and gap acceptance rules. The model considered the multi-decisions undertaken by merging traffic when a driver, for example, accepts the lead gap and rejects the lag gap. The cooperative nature of drivers is also considered where motorway drivers allow others to merge in front of them either by decelerating or shifting to other lanes (yielding) in the vicinity of motorway merge sections. Video recordings, as well as data from the Motorway Incident Detection and Automatic Signalling (MIDAS) were obtained from a selection of sites. The data was used in the verification, calibration and validation processes of the developed model. Other main sources of information include more than 4 million cases of successive vehicles taken from UK motorway sites. These cases were analysed to study the effect of vehicle types on the following behaviour for drivers. The main finding is that there is no evidence that the average spacing between successive vehicles is significantly affected by the type of leading vehicle. Different RM algorithms have been integrated within the developed model. The results of testing the effectiveness of RM controls using the developed model reveal the benefits of RM in reducing time spent by motorway traffic (TTSM) but it significantly increases the time spent by the merging traffic (TTSM). The overall benefits of implementing RM in reducing total time spent (TTS) is limited to situations where the sum of motorway and merge flows exceeds the capacity of the downstream section. Other issues related to RM design and effectiveness have been tested such as the effects of having different durations for peak periods, finding the optimum parameters for each algorithm, the effect of ramp length (storage area) and the effect of RM signals position. The results suggest that RM is very efficient when implemented for short peak periods (e.g. less than 30 minutes). The effectiveness of RM in decreasing the travel time for motorway traffic is increased with an increasing ramp length but with a significant increase in ramp traffic delay. No significant effect is obtained from altering the ramp signals' position. Other tests include the use of other types of traffic management controls (e.g. applying different speed limits and lane changing restrictions (LCR) at the approach to merge sections). No significant improvements were obtained from testing different speed limit values. The results suggest that LCR could reduce travel time for motorway traffic. However, there are other practical considerations which need to be addressed before this could be recommended.
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Chung, Carl Yuk Kay. „Managing ramp operations at airport : issues, models and solution methods /“. View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?IEEM%202005%20CHUNG.
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Unger, Dana L. „Predictors of Job Satisfaction in Recognized American School Counselor Association National Model Programs“. Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1500285396917536.
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Oliveira, Thiago Werlang de. „Estudo do modelo de Rabi no contexto de sistemas quânticos abertos“. Universidade Federal de São Carlos, 2009. https://repositorio.ufscar.br/handle/ufscar/5010.
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Previous issue date: 2009-01-27Universidade Federal de Sao Carlos
The Rabi Hamiltonian describes the interaction between a two-level atom and a single mode of the quantized electromagnetic field. In this work we study numerically and analytically the dynamics of the Rabi hamiltonian subjected to damping and dephasing reservoirs, included via the usual Lindblad superoperators in the master equation. When the system is subjected to the Markovian atomic dephasing reservoir, the anti-rotating term in the Rabi hamiltonian leads to a linear photon generation from the vacuum. In the case where the dissipation effects are present, the asymptotic mean photon number attains a value higher than the thermal photon number, expected in the absence of the anti-rotating term. We reveal the origins of the phenomenon and estimate its importance in realistic situations. Still, we evaluate approximately the photon creation rate in the pure dephasing case and the asymptotic mean photon number and the atomic population inversion in the general case.
O hamiltoniano de Rabi descreve a interação entre um átomo de dois níveis e um único modo de um campo eletromagnético quantizado. Neste trabalho estudamos numericamente e analiticamente a dinâmica do hamiltoniano de Rabi sujeita aos reservatórios de fase e decaimento, introduzidos na equação mestra através dos operadores de Lindblad usuais. Quando o sistema está sujeito a um reservatório de fase atômico markoviano, os termos contra-girantes no hamiltoniano de Rabi induzem uma criação de fótons a partir do vácuo a uma taxa linear. No caso em que há efeitos dissipativos, o número médio de fótons atinge um valor assint´otico maior que o número médio de fótons térmicos, esperado na ausência dos termos contra-girantes. Revelamos a origem do fenômeno e estimamos a sua importância em situações realistas. Ainda, calculamos aproximadamente a taxa de criação de fótons quando há apenas defasagem e os valores estacionários do número médio de fótons e da inversão atômica no caso geral.
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Casamento, James William. „A model for predicting and managing a production ramp-up of a new product“. Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/12781.
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Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1992 and (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.Includes bibliographical references.
by James William Casamento.
M.S.
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Alkadri, Mohamed Yaser. „Freeway Control Via Ramp Metering: Development of a Basic Building Block for an On-Ramp, Discrete, Stochastic, Mesoscopic, Simulation Model within a Contextual Systems Approach“. PDXScholar, 1991. https://pdxscholar.library.pdx.edu/open_access_etds/1308.
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One of the most effective measures of congestion control on freeways has been ramp metering, where vehicle entry to the freeway is regulated by traffic signals (meters). Meters are run with calibrated influx rates to prevent highway saturation. However, recent observations of some metering sites in San Diego, CA indicate that metering, during peak hour demand, is helping freeway flow while sometimes creating considerable traffic back-ups on local streets, transferring congestion problems from the freeway to intersections. Metering problems stem largely from the difficulty of designing an integrated, dynamic metering scheme that responds not only to changing freeway conditions but also to fluctuating demand throughout the ramp network; a scheme whose objective is to maintain adequate freeway throughput as well as minimize disproportionate ramp delays and queue overspills onto surface streets. Simulation modeling is a versatile, convenient, relatively inexpensive and safe systems analysis tool for evaluating alternative strategies to achieve the above objective. The objective of this research was to establish a basic building block for a discrete system simulation model, ONRAMP, based on a stochastic, mesoscopic, queueing approach. ONRAMP is for modeling entrance ramp geometry, vehicular generation, platooning and arrivals, queueing activities, meters and metering rates. The architecture of ONRAMP's molecular unit is designed in a fashion so that it can be, with some model calibration, duplicated for a number of ramps and, if necessary, integrated into some other larger freeway network models. SLAM.II simulation language is used for computer implementation. ONRAMP has been developed and partly validated using data from eight ramps at Interstate-B in San Diego. From a systems perspective, simulation will be short-sided and problem analysis is incomplete unless the other non-technical metering problems are explored and considered. These problems include the impacts of signalizing entrance ramps on the vitality of adjacent intersections, land use and development, "fair" geographic distribution of meters and metering rates throughout the freeway corridor, public acceptance and enforcement, and the role and influence of organizations in charge of decision making in this regard. Therefore, an outline of a contextual systems approach for problem analysis is suggested. Benefits and problems of freeway control via ramp metering, both operational short-term and strategic long-term, are discussed in two dimensions: global (freeway) and local (intersection). The results of a pilot study which includes interviews with field experts and law enforcement officials and a small motorist survey are presented.
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Patra, Ambika Prasad. „Maintenance decision support models for railway infrastructure using RAMS & LCC analyses“. Luleå : Division of Operation and Maintenane Engineering, Luleå University of Technology, 2009. http://pure.ltu.se/ws/fbspretrieve/3340192.
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Chen, Hongyun. „Safety evaluation of freeway exit ramps“. [Tampa, Fla.] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002338.
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Santos, Lucas Almeida dos. „INTEGRAÇÃO DO BALANCED SCORECARD E MODELO DE SLACK COM ÊNFASE NA GESTÃO DO DESEMPENHO ORGANIZACIONAL PARA O RAMO DE TELECOMUNICAÇÕES“. Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/8375.
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Fundação de Amparo a Pesquisa no Estado do Rio Grande do SulIn the current climate of economic environment, organizations need to direct their efforts to maximize the effectiveness of your Organizational Management. Thus, the use of tools and performance indicators, such as the Balanced Scorecard (BSC) and Slack model guide the organization through perspectives that align the company's shares to their strategies, allowing thus the performance evaluation and guiding the Organizational Management. In this context, the present study is guided by the integration of the BSC and Slack model. Because in the age of technology and information, a battle is fought in the consumer market, forcing companies to deliver their products and more quickly and with quality services. The weather this sector dictate rules for how Authorized Agents (representatives) should behave on the market, making complex management process when it comes to expanding their business and strategize long term. In this sense, the research is presented as a case study with a qualitative and quantitative approach than the use of Fuzzy Delphi method as a way of indicators panel validation, developed from the variables of the models with the mirror reality by branch Telecommunications. As a result of this integration, will offer one-Performance Indicators Panel for the Telecommunications industry, with the emphasis on Organizational Management. As result of this integration, there is the creation of a Performance Indicator Panel for the Telecommunications branch, with the emphasis on Organizational Management. The transformation of the responses obtained in NTFs possible to reduce the inaccuracies and pointed out that the perceptions of managers regarding the level of importance on indicators approached the membership function (3.0, 4.0, 5.0), so, for term 4 Very Important. The elimination of the indicators with Gi <3.35 did not influence the proposed panel, as due to its Gi (sum), belonged to the degrees of No Importance (SI) Somewhat Important (PI) and indifferent (I). Finally, it highlights the relevance of this study for the academic community and for the participating organization and the Telecommunications branch
Na atual conjuntura do cenário econômico, as organizações necessitam direcionar seus esforços para maximizar a eficácia de sua Gestão Organizacional. Assim, o uso de ferramentas e indicadores de desempenho, como o Balanced Scorecard (BSC) e o Modelo de Slack direcionam a organização por meio de perspectivas que alinham ações da empresa com suas estratégias, permitindo, dessa forma, a avaliação de desempenho e norteando a Gestão Organizacional. Neste contexto, o presente estudo está pautado na integração do BSC e Modelo de Slack. Pois na era da tecnologia e informação, uma batalha é travada no mercado consumidor, obrigando as empresas a entregarem seus produtos e serviços de forma mais rápida e com qualidade. As intempéries deste setor ditam regras de como os Agentes Autorizados (representantes) devem se portar diante do mercado, tornando complexo o processo de gestão, quando se trata de expandir seus negócios e traçar estratégias em longo prazo. Neste sentido, a pesquisa apresenta-se como um estudo de caso, com abordagem qualitativa e quantitativa, além da utilização do Método Fuzzy Delphi como forma de validação do painel de indicadores, desenvolvido a partir das variáveis dos modelos com a realidade espelhada pelo ramo de Telecomunicações. Como resultado dessa integração, tem-se a criação de um Painel de Indicadores de Desempenho para o ramo de Telecomunicações, tendo como ênfase a Gestão Organizacional. A transformação das respostas obtidas em NTFs permitiu diminuir as imprecisões e apontou que as percepções dos gestores quanto ao grau de importância acerca dos indicadores aproximou da função de pertinência (3,0; 4,0; 5,0), ou seja, para o termo 4 de Muito Importante. A eliminação dos indicadores com Gi < 3,35 não influenciaram no painel proposto, pois devido ao seu Gi (soma), pertenciam aos graus de Sem Importância (SI), Pouco Importante (PI) e Indiferente (I). Por fim, destaca-se a relevância deste estudo para a comunidade acadêmica quanto para a organização participante e o ramo de Telecomunicações.
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Santos, Antônio Carlos Santana dos. „Caracterização da Microfísica das Nuvens sobre a Amazônia Brasileira em Regiões de Pasto e Floresta Medida em Situ por Avião Instrumentado e sua Aplicação Direta no Modelo Regional Rams“. reponame:Repositório Institucional da UFC, 2005. http://www.repositorio.ufc.br/handle/riufc/12895.
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SANTOS, Antônio Carlos Santana dos. Caracterização da Microfísica das Nuvens sobre a Amazônia Brasileira em Regiões de Pasto e Floresta Medida em Situ por Avião Instrumentado e sua Aplicação Direta no Modelo Regional Rams. 2005. 159 f. Tese (Doutorado em Física) - Programa de Pós-Graduação em Física, Departamento de Física, Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2005.Submitted by Edvander Pires (edvanderpires@gmail.com) on 2015-06-18T19:38:31Z No. of bitstreams: 1 2005_tese_acssantos.PDF: 6584804 bytes, checksum: 032023b09866b8ef3557c3accca46784 (MD5)
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Improving or knowledge on cloud microphysics is fundamental to understand the clouds dynamics, its role in the atmospheric general circulation and energy balance, as well as in weather and climate prediction applications using large-scale and mesoscale models. This work aims to verify the dynamic and microphysical behavior of clouds over the Amazon basin and, in particular, to compare those behaviors over pasture and forest areas in Rondônia State. Several thermodynamic and microphysics measurements obtained in situ with the University of North Dakota instrumented aircraft (Citation II) were analyzed, allowing us to reach some conclusions about the microphysical and dynamical characteristics of clouds over pasture and forest areas. Cloud-resolving simulations using RAMS model (Regional Atmospheric Model System) were performed in order to assess sensitivities regarding vegetation cover (pasture or forest). The simulations did not show significant differences in the average vertical profiles of cloud microphysics variables (such as mixing rations for the different hydrometeor species). On the other hand, simulations using different model setups (changes in initialization or average diameter or droplets concentration), produced significant differences in precipitation and hydrometeor concentration, per exempe. Finally, simulations in which the droplets concentrations were specified showed better agreement with observations obtained during ABRACOS experiment (Anglo-Brazilian Amazonian Climate Observation Study), than simulations in which average diameter were specified.
Conhecer a microfísica de nuvens é fundamental para o entendimento da dinâmica, bem como a sua aplicação direta em modelos regionais de tempo e clima. O trabalho proposto nesta tese tem o objetivo de verificar o comportamento dinâmico e microfísico de nuvens amazônicas e, em particular, comparar esse comportamento para nuvens sobre as regiões de pasto e floresta no Estado de Rondônia. Diversas medidas termodinâmicas e microfisicas obtidas in situ com o avião laboratório Citation II foram analisadas, sendo possível extrair algumas conclusões relativas ao comportamento microfísico das nuvens formadas sobre pasto e floresta. Também foram feitas diversas simulações com o modelo RAMS (Regional Atmospheric Model System): testes de sensibilidade em relação à cobertura vegetal (pasto ou floresta), que não apresentaram diferenças significativas no perfil vertical da microfísica das nuvens; simulações feitas inicializando o modelo com o diâmetro médio ou com a concentração de gotículas, cujos resultados apresentaram diferenças significativas. Os resultados obtidos nas simulações inicializadas com a concentração de partículas mostraram-se bastante próximos daqueles observados durante o experimento ABRACOS (Anglo-Brazilian Amazonian Climate Observation Study).
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Mahmood, Farrukh, und Waqas Rasheed. „Quality Requirement Abstraction Model (QRAM)“. Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3397.
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Requirement engineering (RE) is an important phase in any project. Both functional and non-functional requirements are required to be elicited. Quality requirements (QRs) are usually catered at the end of software development process. Along with functional requirements, non-functional (QRs) also need to be handled and implemented through a structural way. It is observed that most organizations do not have proper management for quality requirements in their project life cycles. Especially if we consider the case of market driven requirement engineering (MDRE), it is a dire need to handle those QRs along with the functional requirement using a structural way. In this study we investigate Requirements Abstraction Model (RAM), which is basically designed for MDRE and is the case of continuous RE. The purpose was to analyze RAM specifications, which could be able to provide an effective way of manage QRs. RAM also deals with the specification of QRs, so it was required to investigate that how effective RAM can handle the creation of QRs.
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Akehurst, Colleen Beth 1976. „The benefits of structured training on manufacturing process ramp-up : a process based cost model approach“. Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17912.
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Thesis (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2004.Includes bibliographical references (p. 79-81).
Manufacturing facilities ramping up a new production process are faced with critical decisions, which determine the ability of that process to be cost efficient. Without quantitative analyses, these decisions are made with limited data and may cause manufacturing problems. Two critical decisions are examined in this research: what level of structured training to provide to employees and what cycle time to run when compared with the long-term optimal cycle time. By examining these decisions and their impact on two production metrics, unplanned equipment downtime and reject rate, a series of analyses are presented. A framework for conducting analyses is developed using Process Based Cost Modeling. This framework is applied to various automobile part manufacturing processes. The results indicate that production experience is critical for reducing the two performance metrics of unplanned downtime and reject rate. Additional analyses indicate that to achieve the best cycle times, a significant investment in structured training should be provided. Analytically determining the optimal cycle time is critical to improving production ramp-up because costs increase when running other cycle times. Future work would apply this framework to other manufacturing processes and gather additional data on the processes examined here.
by Colleen Beth Akehurst.
S.M.
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Thurtell, Tyler. „Slow and Stopped Light with Many Atoms, the Anisotropic Rabi Model and Photon Counting Experiment on a Dissipative Optical Lattice“. Miami University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami1533592687000267.
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Wolff, Paulo Roberto. „Construção de um modelo de avaliação de um restaurante no ramo de fast-food“. Florianópolis, SC, 2005. http://repositorio.ufsc.br/handle/123456789/102127.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.Made available in DSpace on 2013-07-16T00:06:33Z (GMT). No. of bitstreams: 1 214116.pdf: 1325454 bytes, checksum: b6e023ccc577d9035054f66ffc52abb0 (MD5)
A maioria das empresas de franchising do ramo de Fast-Food é submetida a um processo de avaliação, porém, dependendo do tipo de processo, ele pouco acrescenta no aperfeiçoamento do estabelecimento por considerar só os aspectos importantes para o franqueador, tornando-se uma formalidade comercial. Diante disso, o trabalho objetiva construir um modelo de avaliação de um restaurante segundo a percepção do cliente, além de auxiliar o decisor na construção do mesmo com a utilização de uma Metodologia Multicritério Apoio à Decisão-Construtivista (MCDA-C). Desse modo, busca-se evidenciar a aplicabilidade do modelo, sua eficiência e robustez, bem como, maior compreensão sobre o contexto decisório ao qual o decisor está inserido. Ao dispor dessa ferramenta que possibilita a geração de conhecimento, as empresas do ramo de Fast-Food passam a ter um diferencial altamente competitivo na avaliação de desempenho.
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Perasso, Fabio Luciano. „Um modelo de analise e predição de reparos e custos de garantia desenvolvido no ramo automobilistico“. [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/305794.
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Orientador: Ademir Jose PetenateDissertação (mestrado profissional) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica
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Resumo: Foram avaliados os modelos de análise de Reparos e Custos de Garantia de indústrias automobilísticas localizadas no Brasil, e a forma de interpretação dos resultados pelas diversas áreas internas das empresas, tais como Finanças, Assistência Técnica, Engenharia do Produto e Processo, Qualidade Assegurada e Manufatura. Notou-se que as áreas internas tinham dificuldades de definir um modelo único e abrangente de interpretação dos resultados de garantia, pois algumas áreas necessitavam avaliar os resultados com referência ao período de produção dos produtos, e outras áreas com referência ao período de pagamento. Outra divergência encontrada era quanto a forma de priorizar os problemas relacionados à freqüência e aos custos envolvidos. Através da análise dos bancos de dados de diversos produtos durante o período de 3 anos foi desenvolvida a proposta de um Modelo de Análise e Predição de Reparos e Custos de Garantia, que atendesse aos interesses das diversas áreas internas das empresas. Esse modelo foi desenvolvido utilizando técnicas estatísticas, principalmente Correlação/Regressão e Controle Estatístico do Processo, possibilitando a avaliação com base no período de produção e de pagamento. Este modelo permite a previsão de gastos futuros através da simulação de diferentes cenários(aumento ou diminuição da demanda de produtos, aumento ou diminuição no volume de reparos e variação nos gastos por produto), e também apresenta técnicas que permitem identificar se as causas das falhas são provenientes de deficiências de processo ou de projeto, melhorando a eficácia das Ações Corretivas (PDCA). Por questões de confidencialidade não foram indicados os produtos e as montadoras analisadas. Os números apresentados sofreram uma alteração de escala, mas foram mantidas as proporções, o que não influencia nos resultados do modelo
Abstract: It was evaluated the Warranty Repairs and Costs Analysis Models from automotive industries in Brazil, and the way that many internal areas of those companies, such as Finance, Service, Product and Process Engineering, Quality Assurance and Manufacturing use all the data. It was noticed that those departments have many difficulties to define an only one comprehensive model to analyse warranty results, because some areas need to evaluate the results related to the production period, and others related to payment period. Another divergence founded was the way to priorise the problems related to frequency and costs. After analysing databases of several products within the period of 3 years, could be developed the proposal of a Model of Analysis and Prediction of Warranty Repairs and Costs, which assisted the interests of those companies departments. This model was developed using statistical techniques, mainly Correlation/Regression and Statistical Process Control, becoming possible the evaluation in both production and payment periods. This model allows to do the forecast of future expenses through the simulation of different sceneries (increase or decrease of products demand, increase or decrease in the volume of repairs and expenses per product), and it also presents techniques that identify if the causes of failures come from process or project deficiencies, improving Corrective Actions effectiveness (PDCA:Plan-Do-Check-Act). Due to confidenciality the models and industries evaluated were not identified in this work. The numbers were changed in scale, but the proportions were maintained, what doesn't influence in the model results
Mestrado
Mestre em Qualidade
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Diniz, Emanuel Cardozo. „Termalização de qubits sujeitos à ação de reservatórios coletivos markovianos“. Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/5068.
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Previous issue date: 2014-08-26Universidade Federal de Sao Carlos
We are interested in understanding the process of Markovian thermalization in quantum systems when we have one or two qubits interacting with a quantum electromagnetic field mode, using the Rabi model, in situations where there is interaction with a reservoir modeling the environment surrounding the system. This analysis of the thermalization is based on the calculation of the eigenvalues of the Liouvillian of the Markovian master equation. We will focus mainly on situations where there is interaction with independent and collective reservoirs, for cases where the subsystems interact with reservoirs at T=0K and T >0K. We investigate situations where there is no thermalization of the system and how this may influence interesting physical properties, such as the statistical properties of the field in the ultra strong scheme using the theory of input-output and quantum correlations between qubits collectively interacting with Markovian reservoirs.
Estamos interessados em entender o processo de termalização em sistemas quânticos markovianos, quando temos um ou dois qubits interagindo com um modo quântico do campo eletromagnético, utilizando o modelo de Rabi, em situações onde há interação com estruturas de reservatório que modelam o ambiente que cerca o sistema. Essa análise da termalização é baseada no cálculo dos autovalores do liouvilliano da equação mestra markoviana. Iremos focar principalmente nas situações onde há interação com reservatórios independentes e coletivos, para casos onde o subsistema interage com reservatórios a T=0K e T >0K. Investigamos situações onde há termalização ou não do sistema e como esse fator pode influenciar nas propriedades físicas interessantes, como, por exemplo, a estatística de detecção de fótons no regime ultra forte utilizando a teoria de entrada e saída e correlações quânticas entre os qubits interagindo com reservatórios markovianos.
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Halbert, Gary W. „Evaluation of acute and chronic infection with Chlamydia pstittaci in ewes and a model for venereal infection of rams“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ33303.pdf.
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Chen, Hongyun. „Comparison of Safety Performance by Design Types at Freeway Diverge Areas and Exit Ramp Sections“. Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3470.
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The primary objective of the study is to evaluate the safety performance of different freeway exit types used in current practical designs. More specific, the research objectives include the following two parts: 1) to compare the safety performance of different design types at freeway diverge areas and exit ramp sections; and 2) to identify the impact factors contributing to the crashes happening at these two specific segments.
The study area includes four subjects, the freeway widely-spaced diverge areas; the freeway closely-spaced diverge areas; the left-side off-ramps and the exit ramp sections. For the freeway diverge areas, design types were defined based on the number of lanes used by vehicular traffic to exit freeways and lane-balance theory. Four exit ramp types were considered for the widely-spaced diverge area, including single-lane exit ramps (Type 1), sing-lane exit ramps without a taper (Type 2), two-lane exit ramps with an optional lane (Type 3), and two-lane exit ramps without an optional lane (Type 4).
For the closely-spaced diverge areas, three types, named as Type A, Type B and Type C, are selected to compare the safety performances among the three types. For the left-side off-ramp at the freeway diverge area, this study examined the two most widely used design types at the left-side freeway diverge areas in Florida, which are defined as Type I (one-lane left-side off-ramp), and Type II (two-lane left-side off-ramp). Type I is comparable to Type 1 design type and Type II is comparable to Type 3 design type at widely-spaced freeway diverge area. For the exit ramp sections, four ramp configurations, including diamond, out connection, free-flow loop and parclo loop, were considered.
Cross-sectional comparisons were conducted to compare the crash frequency, the crash rate, the crash severity and target crash types between different design groups. Crash predictive models were also built to quantify the impacts of various contributing factors. The results of this study would expectedly help transportation decision makers develop tailored technical guidelines governing the selection of the optimum design combinations at freeway diverge areas and exit ramp sections.
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Yucel, Ismail. „Assimilation of satellite-derived cloud cover into the Regional Atmospheric Model System (RAMS) and its impacts on modeled surface fields“. Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/279909.
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The goal of this study is to provide an improved, high resolution, regional diagnosis of three important surface variables on the land surface energy and water balance, namely the downward short-wave and downward long-wave surface radiation fluxes, and precipitation. Cloud cover is a key parameter linking and controlling these three terms. An automatic procedure was developed to derive high-resolution (4 km x 4 km) fields of fractional cloud cover from visible band, (GOES series) geostationary satellite data using a novel tracking procedure to determine the clear-sky composite image. In our initial data assimilation studies, the surface short-wave radiation fluxes calculated by RAMS were simply replaced by the equivalent estimated values obtained by applying this high-resolution satellite-derived cloud cover in the UMD GEWEX/SRB model. However, this initial study revealed problems associated with inconsistencies between the revised solar radiation fields and the RAMS-calculated incoming long-wave radiation and precipitation fields, because modeled cloud cover remained unchanged and, consequently, these other surface fields retained their low, clear-sky values. It was recognized that the UMD GEWEX/SRB model provides an important relationship between cloud albedo, cloud optical depth and cloud water/ice. Thus, exploration was made of feasibility of directly assimilating vertically integrated cloud water/ice fields to update modeled cloud cover. This approach will not only enhance the realism of radiation scheme in RAMS, but it may also dramatically increase the model's capability to predict the location of precipitation, thus enhancing the ability of such mesoscale modeling systems to make accurate short-term forecasts of precipitation. This, in turn, would benefit flood forecasting as an associate hydrologic response. In the method adopted, the assimilated image takes the horizontal distribution of cloud from the satellite image but it retains a vertical distribution which is the area-average simulated by RAMS across the modeled domain in the time step immediately prior to cloud assimilation. Cloud assimilation is made every minute, with linear interpolation applied to derive cloud images for each minute between two GOES samples. Comparisons were made between modeled and observed data taken from the AZMET weather station network for model runs with and without cloud assimilation to demonstrate the improvement in RAMS' ability to describe surface radiation and precipitation fields. Cloud assimilation was found to substantially improve the RAMS model's ability to capture both the temporal and spatial variations in surface fields associated with observed cloud cover. The sensitivity of these comparisons to model initiation was explored by making five ensemble runs starting from different initiation. In general, RAMS with cloud assimilation technique is not sensitive to realistic perturbation of initial conditions.
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Schaal, Peter. „Observer-based engine air charge characterisation : rapid, observer-assisted engine air charge characterisation using a dynamic dual-ramp testing method“. Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/33247.
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Characterisation of modern complex powertrains is a time consuming and expensive process. Little effort has been made to improve the efficiency of testing methodologies used to obtain data for this purpose. Steady-state engine testing is still regarded as the golden standard, where approximately 90% of testing time is wasted waiting for the engine to stabilize. Rapid dynamic engine testing, as a replacement for the conventional steady-state method, has the potential to significantly reduce the time required for characterisation. However, even by using state of the art measurement equipment, dynamic engine testing introduces the problem that certain variables are not directly measurable due to the excitation of the system dynamics. Consequently, it is necessary to develop methods that allow the observation of not directly measurable quantities during transient engine testing. Engine testing for the characterisation of the engine air-path is specifically affected by this problem since the air mass flow entering the cylinder is not directly measurable by any sensor during transient operation. This dissertation presents a comprehensive methodology for engine air charge characterisation using dynamic test data. An observer is developed, which allows observation of the actual air mass flow into the engine during transient operation. The observer is integrated into a dual-ramp testing procedure, which allows the elimination of unaccounted dynamic effects by averaging over the resulting hysteresis. A simulation study on a 1-D gas dynamic engine model investigates the accuracy of the developed methodology. The simulation results show a trade-off between time saving and accuracy. Experimental test result confirm a time saving of 95% compared to conventional steady-state testing and at least 65% compared to quasi steady-state testing while maintaining the accuracy and repeatability of conventional steady-state testing.
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Santos, AntÃnio Carlos Santana dos. „CaracterizaÃÃo da MicrofÃsica das Nuvens sobre a AmazÃnia Brasileira em RegiÃes de Pasto e Floresta Medida em Situ por AviÃo Instrumentado e sua AplicaÃÃo Direta no Modelo Regional Rams“. Universidade Federal do CearÃ, 2005. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2899.
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nÃo hÃConhecer a microfÃsica de nuvens à fundamental para o entendimento da dinÃmica, bem como a sua aplicaÃÃo direta em modelos regionais de tempo e clima. O trabalho proposto nesta tese tem o objetivo de verificar o comportamento dinÃmico e microfÃsico de nuvens amazÃnicas e, em particular, comparar esse comportamento para nuvens sobre as regiÃes de pasto e floresta no Estado de RondÃnia. Diversas medidas termodinÃmicas e microfisicas obtidas in situ com o aviÃo laboratÃrio Citation II foram analisadas, sendo possÃvel extrair algumas conclusÃes relativas ao comportamento microfÃsico das nuvens formadas sobre pasto e floresta. TambÃm foram feitas diversas simulaÃÃes com o modelo RAMS (Regional Atmospheric Model System): testes de sensibilidade em relaÃÃo à cobertura vegetal (pasto ou floresta), que nÃo apresentaram diferenÃas significativas no perfil vertical da microfÃsica das nuvens; simulaÃÃes feitas inicializando o modelo com o diÃmetro mÃdio ou com a concentraÃÃo de gotÃculas, cujos resultados apresentaram diferenÃas significativas. Os resultados obtidos nas simulaÃÃes inicializadas com a concentraÃÃo de partÃculas mostraram-se bastante prÃximos daqueles observados durante o experimento ABRACOS (Anglo-Brazilian Amazonian Climate Observation Study).
Improving or knowledge on cloud microphysics is fundamental to understand the clouds dynamics, its role in the atmospheric general circulation and energy balance, as well as in weather and climate prediction applications using large-scale and mesoscale models. This work aims to verify the dynamic and microphysical behavior of clouds over the Amazon basin and, in particular, to compare those behaviors over pasture and forest areas in RondÃnia State. Several thermodynamic and microphysics measurements obtained in situ with the University of North Dakota instrumented aircraft (Citation II) were analyzed, allowing us to reach some conclusions about the microphysical and dynamical characteristics of clouds over pasture and forest areas. Cloud-resolving simulations using RAMS model (Regional Atmospheric Model System) were performed in order to assess sensitivities regarding vegetation cover (pasture or forest). The simulations did not show significant differences in the average vertical profiles of cloud microphysics variables (such as mixing rations for the different hydrometeor species). On the other hand, simulations using different model setups (changes in initialization or average diameter or droplets concentration), produced significant differences in precipitation and hydrometeor concentration, per exempe. Finally, simulations in which the droplets concentrations were specified showed better agreement with observations obtained during ABRACOS experiment (Anglo-Brazilian Amazonian Climate Observation Study), than simulations in which average diameter were specified.
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BARZANTI, MARCO. „Progetti di riforma delle garanzie finanziarie del settore assicurativo: valutazione del rischio finanziario in una compagnia ramo vita“. Doctoral thesis, Università Cattolica del Sacro Cuore, 2007. http://hdl.handle.net/10280/129.
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Il sistema delle garanzie finanziarie del mercato assicurativo è, allo stato attuale, oggetto di processi di riforma comunitari (c.d. progetto Solvency II). Le ipotesi fino ad ora elaborate, nonostante siano lontane dal potersi definire conclusive, prevedono l'apprezzamento del margine di solvibilità relativo al rischio di tasso d'interesse (IRR) assumendo che la struttura per scadenza sia oggetto di shift paralleli della curva. Noti i limiti dell'approccio deterministico ed in forza dei principi fino ad ora consolidati, il presente elaborato si propone l'obiettivo di quantificare il requisito di capitale di una compagnia operante nel ramo vita, a fronte dell'IRR, ipotizzando che la dinamica dei tassi sia governata da un processo stocastico nella forma del modello Cox Ingersoll e Ross (CIR). Le simulazioni sono state sviluppate sugli equilibri patrimoniali di una teorica compagnia, al fine di apprezzare in maniera asettica il contributo dell'impostazione promossa.Nowadays, the financial guarantees system of insurance market is being interested by a Community reform process (Solvency II project). Even if the current hypothesis are far to be definitive, the present guidelines state that the Solvency Capital Requirement (SCR) related to Interest Rate Risk (IRR) has to be quantified assuming deterministic shocks to the yield curve. The aim of the thesis is to improve the assessment of SCR connected to IRR, calculating interest rates according to Cox, Ingersoll and Ross (cir) stochastic model. Simulations are developed on the asset liability equilibria of a theoretical life insurance company, in order to better appreciate the SCR algebra sensitivity to changes in CIR model parameters.
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Rahim, Nadir, und Karl Erik Wall. „Framtagning av modulbaserad bärande ram till kabinhissar : tillhörande Cibes Lift skruvhissar“. Thesis, Högskolan i Gävle, Maskinteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-26079.
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Cibes Lift är en tillverkare av skruvdrivna plattforms-, -kabin och trapphissar. Då intresset har ökat för hissar i privata bostäder vill företaget sänka tillverkningskostnaderna och utöka utbudet av storlekar på deras kabinhissar för att vara konkurrenskraftiga. Syftet med arbetet är att ta fram en ramkonstruktion som ger högre flexibilitet och lättare kan anpassas till flera olika storlekar av kabinhissar. Målet är att konstruera en moduluppbyggd ram med ett maximalt inköpspris på 5500 kronor och uppfylla maskindirektivets säkerhetskrav. För att uppnå arbetets mål analyserades de befintliga hissramarna genom observationer, praktiska lastprov och Finita elementmetoden (FEM). Intervjuer och observationer gjordes hos tillverkarna av ramarna för att ge information om vilka tillverkningsresurser som fanns att tillgå för den nya ramens konstruktion. Med hjälp av idégenereringsmetod skapades därefter två konceptmodeller som utvärderades med utvärderingsmetoden VDI 2225. Utvärderingsmetoden genererade det mest funktionella konceptet som modulerades med CAD-programmet Autodesk Inventor. Optimering utfördes därefter med hjälp av beräkningar för att erhålla en låg tillverkningskostnad samt uppfylla maskindirektivens säkerhetskrav. Resultatet av slutprodukten består av en ram som är uppbyggd av en basmodul och fem stycken variantmoduler som uppfyller samtliga maskindirektivets säkerhetskrav. Ramen är nästintill uteslutande konstruerad av kallvalsade stålprofiler som tillåts att tillverkas i underleverantörens maskinpark. Priset på ramen uppskattas till 4800 kronor vilket avser en basmodul och den största variantmodulen. Priset är baserat på en inköpskvantitet på 500 stycken basmoduler och 100 stycken variantmoduler av vardera storlek per år. I jämförelse med den största befintliga ramen till kabinhissar har vi lyckats sänka priset med 280 %. Slutsatserna av arbetet är att vi har lyckats konstruera en ram som är uppbyggd av moduler och genom användande av standardiserade artiklar har antalet artiklar kunnat sänkas med 58 % i jämförelse med den största befintliga kabinhissen.Cibes Lift manufacture screw driven stair, platform and cabin Lifts. Among the company´s ambition is to lower their manufacturing costs and expand their cabin model range following a high demand; particularly from the private sector. The purpose of this work is to design a frame easily adaptable to several cabin sizes. The objective is to design a modular frame in accordance with the EU Machinery Directive and with a maximum cost of 5500 SEK. The redesign began with an analysis of the cabin frames, currently in use by the company; in the form of observations, practical load tests and the application of the Finite Element Method (FEM). Interviews and observations were performed at the subcontractor´s facilities, in order to identify production resources availability. Two frame concepts were designed by using a creativity technique and evaluated through the evaluation method VDI2225. Thereafter, using CAD began the creation of the Best Functional Concept; where components were dimensioned using Finite Element Analysis and Strength calculation to meet the objectives; (namely a frame in accordance with the EU Machinery Directive with a maximum cost of 5500 SEK). The result is a modular frame built from one standardized back piece module and five different floor modules; featuring different floor areas. The frame complies with the associated EU Machinery Directives and is almost entirely constructed of cold-formed steel profiles, so manufacturing can be performed using the current subconttor resources. The frame expected cost is of SEK 4800; calculated based on one back piece module plus the largest size floor module. The cost is based upon a purchase quantity of 500 back piece modules and 100 floor modules per year. When comparing this calculated cost to the current frame cost, the estimated price reduction is of 280%. As a conclusion, we have managed to design a modularized frame using standardized parts reducing the number of single pieces by approximately 58% when compared to the company current cabin Lift construction.
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Paudel, Abinash. „Application of One Dimensional Turbulence (ODT) to Model Fire Spread Through Biomass Fuel Bed“. BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3988.
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Each year fires destroy millions of acres of woodland, lives, and property, and significantly contribute to air pollution. Increased knowledge of the physics and properties of the flame propagation is necessary to broaden the fundamental understanding and modeling capabilities of fires. Modeling flame propagation in fires is challenging because of the various modes of heat transfer with diverse fuels, multi-scale turbulence, and complex chemical kinetics. Standard physical models of turbulence like RANS and LES have been used to understand the flame behavior, but these models are limited by computational cost and their inability to resolve sub-grid scales. Application of several other models and empirical studies in fire modeling are usually limited to fire spread rate only. In some fires, flame propagation often occurs through convective heating by direct flame contact as opposed to radiative preheating alone. Under these conditions, resolution of the flame front can provide the detailed physics and insights into the flame propagation. The One Dimensional Turbulence (ODT) model is extended to turbulent flame propagation in biomass fuel beds representative of those in wild land fires. ODT is a stochastic model that is computationally affordable and can resolve both large and fine scales. ODT has been widely applied to many reacting and non-reacting flows like jet flames and pool fires. A detailed particle combustion model has been developed and implemented in the ODT model to investigate the fluctuating flame-fuel interface and to study flame propagation properties. The particle reaction is modeled as a single global decomposition reaction model. Radiative, convective, and internal particle conductive heat transfer are included. Gaseous combustion is modeled with a lookup table parameterized by mixture fraction and fractional heat loss using steady laminar flame let solutions. Results are presented from simulations of flame propagation in buoyantly driven flows. Particle size and loading are varied to study their effects in flame spread. A timescale analysis is performed to compare radiative, convective, conductive, and reactive particle time scales to the turbulent fluctuations. The flame propagation in homogeneous turbulence is also studied which better represents the wildland fire. The time scales involved in the wildland fire are overlapped using LEM model to study their effects on the flame properties and flame spread.
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Farias, Silvia Joaquina Soria de. „Aplicação do modelo de RAMS para o estudo de um vórtice ciclônico que atingiu o município de Viamão“. reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2002. http://hdl.handle.net/10183/5109.
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A partir de dados do CPTEC, utilizou-se o modelo numérico Regional Atmospheric Modeling System (RAMS) para simular as condições ambientais que originaram a formação e evolução de um ciclone no dia 11 de outubro de 2000, no município de Viamão, no estado do Rio Grande do Sul. Utilizou-se três grades aninhadas, com resolução progressivamente mais refinada e de forma simultânea. O modelo simulou com bastante precisão os campos de vento, pressão, umidade relativa e temperatura potencial. As simulações foram analisadas e comparadas à dados de superfície, imagens de satélite, cartas sinóticas e radiossondagens. A topografia e a brisa marítima exerceram forte influencia no sentido de intensificar o sistema convectivo que se formou sobre o Estado do Rio grande do Sul, bem como os altos valores de umidade relativa e o intenso cisalhamento vertical. Com estes procedimentos foi possível analisar e caracterizar o perfil atmosférico do sistema estudado e definir parâmetros meteorológicos que justificaram a formação de um tornado.
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BOUTAROUK, KHALED. „Elaboration d'un modele mathematique simulant le comportement vibratoire d'une rame a grande vitesse. (cas du t. G. V. )“. Paris, ENSAM, 1989. http://www.theses.fr/1989ENAMA009.
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L'etude se compose de deux parties principales: i: 1) etude du comportement vibratoire d'un vehicule ferroviaire a l'aide du modele classique a deux etages. 2) etude du comportement d'une rame articulee a l'aide d'un modele compose de deux demi-caisses reliees par une articulation et reposant sur un bogie. Ii: * modelisation de la caisse deformable en flexion. * modelisation de la voie deformable. A) etude du systeme compose d'une seule caisse deformable reposant sur deux bogies et circulant sur une voie deformable a une vitesse v. B) etude du systeme compose d'une seule caisse rigide reposant sur deux bogies et circulant sur une voie deformable a une vitesse v. C) etude du comportement vibratoire d'une rame articulee a l'aide d'un modele compose de trois caisses deformables reliees entre elles par des liaisons inter-caisse, reposant sur quatre bogies et circulant a une vitesse v sur une voie deformable.
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Melo, Rafael Sobral. „Aplicação da lei de mortalidade de PERKS à experiência brasileira no ramo vida“. Master's thesis, Instituto Superior de Economia e Gestão, 2009. http://hdl.handle.net/10400.5/1701.
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Mestrado em Ciências ActuariaisO objectivo deste trabalho é trazer alguns conceitos e elementos utilizados na Matemática Actuarial sob uma óptica contínua, discorrendo pela análise populacional, pelos arranjos securitários - anuidades e seguros - e culminando em um plano de aposentadoria. Para isso, utilizou-se da Lei de Mortalidade de Perks em modelos embasados no mercado brasileiro de fundos de pensão e seguradoras.
The objective of this work is to bring some concepts and elements used in the Actuarial Mathematics on the continuous focus, beginning in population analysis, the security nets -annuities and life insurance - and culminating in a retirement plan. For that, we used the Mortality Law of Perks in models based in the Brazilian market of pension funds and insurance companies.
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Tománek, Michal. „Posouzení informačního systému firmy a návrh změn“. Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2019. http://www.nusl.cz/ntk/nusl-402027.
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Topic of this Diploma thesis is assessment of information system in selected company Ryba Žilina s.r.o.. This phase of assessment comes out from extensive analysis and findings. After evaluation of analytical methods used, suggestions for improvement of current information system, will be created. This proposals should bring positive asset for company itself and improve some of the processes in company.
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Garcia, Editinete André da Rocha. „Modelo de controladoria para as empresas do ramo de construção civil, subsetor edificações sob a ótica da gestão econômica“. Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/12/12136/tde-01052003-114153/.
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Este estudo, desenvolvido a partir da premissa de que o modelo de gestão econômica - Gecon é o modelo de atuação empresarial mais apropriado para desenvolvimento e implantação de uma Controladoria voltada à otimização do resultado econômico da organização, objetiva identificar através da utilização do conhecimento da teoria geral de sistemas, o modelo de Controladoria para as empresas de construção civil, subsetor edificações. Para tanto, é apresentada a fundamentação teórica necessária para o suporte ao modelo. São discutidos aspectos tais como; o modelo Gecon, a eficácia empresarial, o resultado como medida de eficácia e a Controladoria considerada sob dois vértices: ramo de conhecimento e área de responsabilidade. Através do estudo da empresa de construção civil, subsetor edificações, são apresentados aspectos em relação a sua evolução e antecedentes histórico, caracterizando e identificando suas particularidades, bem como, suas principais transações. O modelo proposto considera a Controladoria como uma área de responsabilidade, com missão definida e composta por todos os subsistemas do sistema empresa, que interagem para consecução de seus objetivos. Neste aspecto, é responsável por desenvolver ações visando a otimização do resultado econômico da organização, a minimização de riscos e incertezas e salvaguarda patrimonial. O estudo apresenta, portanto, a visão de cada subsistema que compõe a Controladoria de forma que a empresa, ao identificar a necessidade de implantação desta área, identifique suas características primordiais.This study was undertaken according to the premise that the economic management model GECON is the most appropriate business practice model for development and implementation of Controllership geared towards optimization of economic results in an organization. The research seeks to identify, by using knowledge of the General Systems Theory, the model for Controllership in construction companies, specifically the buildings sub-sector. For that purpose, the necessary theoretical background is presented in support of the model. Aspects such as the GECON model, business effectiveness, results as a measure of effectiveness and Controllership are seen from two angles: knowledge and responsibility area. By studying the construction company, buildings sub-sector, aspects related to evolution and historical background of these companies are explored, characterizing and identifying their peculiarities, as well as their main transactions. The model considers Controllership as an area of responsibility, with a clearly-defined mission, composed of all the subsystems of the business system, which interact in order to attain their objectives. In this regard, it is responsible for developing actions seeking optimization of the organizations economic results, minimization of risks and uncertainties and preservation of assets. The study therefore presents the view of each subsystem comprising Controllership in order that the company may identify its basic characteristics and the need for its implementation.
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Silva, Luciana Carcuchinski da. „Avaliação de um modelo de atendimento à saúde do trabalhador em uma empresa do ramo moveleiro pós-afastamentos temporários“. reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/5276.
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Esta pesquisa trata da análise de um modelo de atendimento à saúde do trabalhador realizado em uma empresa produtora de móveis de madeira, para trabalhadores que sofreram acidentes ou Distúrbios Osteomusculares Relacionados ao Trabalho. O atendimento visa a manutenção ou retorno precoce do funcionário ao ambiente produtivo, colaborando para a sua recuperação funcional e minimizando custos para o próprio funcionário e a empresa. As avaliações foram feitas com base em entrevistas semi-estruturadas, realizadas com profissionais responsáveis pela promoção da saúde e segurança na empresa e em visita a dois setores com o maior número de afastamento ao trabalho. Os dados coletados foram comparados com os modelos propostos na literatura. Com base no modelo resultante foram propostas sugestões para aumentar a eficiência do modelo, entre elas: formalização do programa de retorno ao trabalho, aumento do envolvimento da equipe de saúde e segurança do trabalho com o programa, realizar pré-identificação de processos e postos de trabalho, registrar o acompanhamento do funcionário e divulgar o programa dentro da empresa.
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Nie, Juhe. „Civil Think Tank's Business Model and Management Framework : A case study at Youthink Center“. Thesis, KTH, Maskinkonstruktion (Inst.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298792.
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Think tanks are identified as policy research institutions that conduct interdisciplinary research on social or policy issues and provide consultation with the government, enterprises and the general public. Civil think tanks place social value prior to profits and uphold research independence. Through producing research content on social issues, civil think tanks make contribution with publications, advocacy, and action promotion. Civil think tanks are facing challenging complexity and obstacles in development due to their independence from governments and universities. To resolve these difficulties, civil think tanks require an innovative business model and a matching management mechanism. This thesis aims to understand the business model performed by civil think tanks and explore a practical management model to support this business. Specific recommendations will be made to the case organization. The case study was performed in collaboration with Youthink Center, one of China’s leading civil think tanks which provides young people with a platform to learn, take advocacy, and action on global frontier issues about sustainable development. A systematic literature review was conducted to elaborate concepts connected to think tanks and understand existing management frameworks. Data regarding this research project was collected through internal and external interviews and documentations.The case-study resulted in an evaluation on the business model of Youthink Center and a proposed management framework in accordance with the business. Key aspects of succeeding in a think tank are to insist on the value proposition of social responsibility and to enhance content creation and influence expansion ability with digital tools. To make this business model operate effectively, think tanks are expected to focus on project management processes, talent gathering, evaluation mechanism, and deeper collaborations on knowledge and technology. Understanding these areas will guide the social think tanks to increase working efficiency and enhance social influence.Tankesmedjor (think tanks) identifieras som politiska forskningsinstitutioner som bedriver tvärvetenskaplig forskning om sociala eller politiska frågor och erbjuder samråd med regeringen, företag och allmänheten. Civila tankesmedjor lägger socialt värde före vinst och upprätthåller forskningsoberoende. Genom att producera forskningsinnehåll om sociala frågor bidrar civila tankesmedjor med publikationer, förespråkande och handlingsfrämjande. Civila tankesmedjor står inför utmanande komplexitet och hinder i utvecklingen på grund av deras oberoende från regeringar och universitet. För att lösa dessa svårigheter kräver civila tankesmedjor en innovativ affärsmodell och en matchande hanteringsmekanism. Denna uppsats syftar till att förstå den affärsmodell som utförs av civila tankesmedjor och utforska en praktisk ledningsmodell för att stödja denna verksamhet. Specifika rekommendationer kommer att ges till fallorganisationen. Fallstudien utfördes i samarbete med Youthink Center, en av Kinas ledande civila tankesmedjor som ger ungdomar en plattform för att lära sig, ta förtal och agera i globala gränsfrågor om hållbar utveckling. En systematisk litteraturgranskning genomfördes för att utarbeta begrepp kopplade till tankesmedjor och förstå befintliga ledningsramar. Data om detta forskningsprojekt samlades in genom interna och externa intervjuer och dokument. Fallstudien resulterade i en utvärdering av affärsmodellen för Youthink Center och en föreslagen ledningsram i enlighet med verksamheten. Nyckelaspekter för att lyckas med en tankesmedja är att insistera på värdet av socialt ansvar och att förbättra innehållsskapandet och påverka expansionsförmågan med digitala verktyg. För att få denna affärsmodell att fungera effektivt förväntas tankesmedjor att fokusera på projektledningsprocesser, talangsamling, utvärderingsmekanismer och djupare samarbete om kunskap och teknik. Att förstå dessa områden kommer att vägleda de sociala tankesmedjorna för att öka arbetseffektiviteten och förbättra det sociala inflytandet.
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Majid, Hirsh. „Contribution à l'estimation et à la commande des systèmes de transport intelligents“. Thesis, Artois, 2014. http://www.theses.fr/2014ARTO0203/document.
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Les travaux présentés dans ce mémoire de thèse s’inscrivent dans le cadre des Systèmes de TransportIntelligents (STI). Bien que les premières études sur ces systèmes ont commencé dans les années 60, leurdéveloppement reposant sur les techniques de l’information et de la communication, a atteint sa maturitédans le début des années 80. Les STI, sont composés de différents systèmes et intègrent différents concepts(systèmes embarqués, capteurs intelligents, autoroutes intelligentes, . . .) afin d’optimiser le rendementdes infrastructures routières et répondre aux problèmes quotidiens des congestions. Ce mémoire présentequatre contributions dans le cadre du trafic routier et aborde les problèmes de l’estimation et de lacommande afin d’éliminer les problèmes de congestions « récurrentes ». Le premier point traite unproblème crucial dans le domaine des STI qui est celui de l’estimation. En effet, la mise en oeuvre delois de commande pour réguler le trafic impose de disposer de l’ensemble des informations concernantl’évolution de l’état du trafic. Dans ce contexte, deux algorithmes d’estimation sont proposés. Le premierrepose sur l’emploi du modèle METANET et les techniques de modes de glissement d’ordre supérieur. Lesecond est basé sur les CTM (Cell Transmission Models). Plusieurs études comparatives avec les filtresde Kalman sont proposées. La seconde contribution concerne la régulation du trafic. L’accent est mis surle contrôle d’accès isolé en utilisant les algorithmes issus du mode de glissement d’ordre supérieur. Cettecommande est enrichie en introduisant une commande intégrée combinant le contrôle d’accès et le routagedynamique. L’ensemble des résultats, validé par simulation, est ensuite comparé aux stratégies classiquesnotamment le contrôle d’accès avec l’algorithme ALINEA. La troisième contribution traite des problèmesde coordination. En effet, l’objectif est d’appliquer le principe de la commande prédictive pour contrôlerplusieurs rampes d’accès simultanément. L’ensemble des contributions ont été validées en utilisant desdonnées réelles issues en grande partie de mesures effectuées sur des autoroutes françaises. Les résultatsobtenus ont montré un gain substantiel en termes de performances tels que la diminution du trajet, dutemps d’attente, de la consommation énergétique, ainsi que l’augmentation de la vitesse moyenne. Cesrésultats permettent d’envisager plusieurs perspectives nouvelles de développement des recherches dansce domaine susceptibles d’apporter des solutions intéressantesThe works presented in this PhD dissertation fit into the framework of Intelligent TransportationSystems. Although the beginnings of these systems have started since the 60s, their development, basedon information and communication technologies, has reached maturity during the early 80s. The ITS usesthe intelligence of different systems (embedded systems, intelligents sensors, intelligents highways, etc.)in order to optimize road infrastructures performances and respond to the daily problems of congestions.The dissertation presents four contributions into the framework of road traffic flow and tackles theestimation and control problems in order to eliminate or at least reduce the “recurrent" congestionsphenomena. The first point treats the problem of traffic state estimation which is of most importance inthe field of ITS. Indeed, the implementation and performance of any control strategy is closely relatedto the ability to have all needed information about the traffic state describing the dynamic behavior ofthe studied system. Two estimation algorithms are then proposed. The first one uses the “metanet"model and high order sliding mode techniques. The second is based on the so-called Cell TransmissionModels. Several comparative studies with the Kalman filters, which are the most used in road traffic flowengineering, are established in order to demonstrate the effectiveness of the proposed approaches. Thethree other contributions concern the problem of traffic flow control. At first, the focus is on the isolatedramp metering using an algorithm based on the high order sliding mode control. The second contributiondeals with the dynamic traffic routing problem based on the high order sliding mode control. Such controlstrategy is enriched by introducing the concept of integration, in the third contribution. Indeed, integratedcontrol consists of a combination of several traffic control algorithms. In this thesis the proposed approachcombines an algorithm of on-ramp control with a dynamic traffic routing control. The obtained results arevalidated via numerical simulations. The validated results of the proposed isolated ramp metering controlare compared with the most used ramp metering strategy : ALINEA. Finally, the last contributiontreats the coordination problems. The objective is to coordinate several ramps which cooperate andchange information in order to optimize the highway traffic flow and reduce the total travel time in theapplied area. All these contributions were validated using real data mostly from French freeways. Theobtained results show substantial gains in term of performances such as travel time, energetic consumptiondecreasing, as well as the increasing in the mean speed. These results allow to consider several furtherworks in order to provide more interesting and efficient solutions in the ITS field
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Vásquez, Baca Urphy. „Modelo de incubación en tecnologías para el desarrollo humano, bajo un enfoque territorial : caso de estudio del proyecto RAMP Perú“. Master's thesis, Pontificia Universidad Católica del Perú, 2012. http://tesis.pucp.edu.pe/repositorio/handle/123456789/1455.
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Por iniciativa de la Fundación Lemelson, en el Perú se desarrolló el proyecto
“Recognition and Mentoring Program” - en siglas RAMP PERU - ejecutado por un
consorcio de instituciones y socios regionales. RAMP PERU opera en las regiones
de Puno, Cusco, Cajamarca y Lima. El proyecto está orientado al cumplimiento de
dos objetivos principales:Promover la creación de innovaciones tecnológicas
tangibles a través de la formación de empresas de base tecnológica, que
contribuyan a mejorar la calidad de vida de la población vulnerable en el interior del
país yFortalecer el Sistema de Innovación Nacional y Regional, a través de la
articulación y promoción de iniciativas de estímulo a la innovación tecnológica por
medio de los Consejos Regionales de Ciencia, Tecnología e Innovación. El
presente trabajo se desarrolla dentro del marco del primer objetivo, comprendido en
los Programas de Fortalecimiento y Acompañamiento a Innovadores de Tecnología
para el Desarrollo - basado en un modelo de Incubación Tecnológica - que busca
tener como resultado la creación de empresas o negocios con potencial innovador.
El modelo de negocio está enfocado en la venta del producto, equipo o la
prestación del servicio de base tecnológica; para la satisfacción de necesidades y
demandas de la población vulnerable en las regiones de intervención. La
investigación consiste en estudiar el modelo de incubación tecnológica
implementado en los Programas, identificando las potencialidades y limitaciones del
proceso de incubación, con el objetivo de definir qué aspectos del modelo actual
son susceptibles de ser mejorados. Para ello se tomará como muestra los
programas implementados en el año 2008 y 2010, abordando la conceptualización
y caracterización del modelo de incubación tecnológica bajo un enfoque de
tecnología para el desarrollo humano y los resultados cualitativos y cuantitativos
obtenidos. A partir de estos resultados se identifican los aciertos y desaciertos del
modelo de incubación en tecnologías intermedias.Tesis
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Crespo, Nuno Miguel Pascoal. „Medição e factores determinantes do comércio intra-ramo : uma aplicação ao caso português“. Master's thesis, Instituto Superior de Economia e Gestão, 2001. http://hdl.handle.net/10400.5/15977.
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Mestrado em Economia InternacionalA existência de comércio de produtos pertencentes à mesma indústria (comércio intraramo -CIR) tem sido objecto de ampla investigação teórica e empírica ao longo, sobretudo, dos últimos 25 anos. A magnitude deste tipo de comércio e os menores custos de ajustamento que, normalmente, lhe são associados justificam este estudo detalhado. Nos últimos anos, graças ao surgimento de novas linhas de investigação que visam colmatar algumas das lacunas existentes na análise anterior, o estudo do CIR ganhou um renovado interesse. Neste contexto, um dos mais importantes contributos consiste na aplicação, em termos empíricos, da desagregação do CIR em CIR vertical (de produtos diferenciados pela qualidade) e CIR horizontal (de produtos diferenciados pelas características). No presente trabalho, após apresentarmos os principais quadros teóricos que servem de suporte explicativo à existência de CIR, concentramo-nos na sua avaliação empírica em Portugal. Assim, procedemos à avaliação quantitativa dos diferentes tipos de CIR no caso português (em termos globais e numa perspectiva bilateral) na década de 90. Para tal, utilizamos, preferencialmente, a metodologia de análise usualmente designada "metodologia do CEPII". Complementarmente, utilizamos o clássico indicador de Grubel-Lloyd. Os resultados permitem concluir que o CIR é um fenómeno significativo e de importância crescente em Portugal. Concluímos, igualmente, que o CIR vertical é claramente dominante. Para além da medição do fenómeno em Portugal, procedemos, ainda, à avaliação econométrica da importância dos factores determinantes avançados pela teoria, no caso português. Os resultados desta análise permitem confirmar a grande vantagem em proceder ao estudo do CIR em termos desagregados dado que os factores determinantes de cada tipo de CIR são distintos.
The existence of trade of products belonging to the same industry (intra-industry trade- IIT) has been object of ample theoretical and empirical research mainly along the last 25 years. The magnitude of this trade type and the minor adjustment costs which are, normally, associated to it, justify this detailed study. In recent years, thanks to the appearance of new lines of research aiming at overcoming some of the problems present in the previous analysis, IIT gained a renewed interest. In this context, one of the most important contributions consists in the application, in empirical terms, of the desegregation, for a long time established in theory, of IIT into vertical IIT (of products differentiated by quality) and horizontal IIT (of products differentiated by characteristics). In the present work, after presenting the main theoretical aspects which are used as explanatory support to the existence of IIT, we concentrate on its empirical measurement in Portugal. Thus, we conduct the quantitative evaluation of the differentIIT types in the Portuguese case (in global terms and in a bilateral perspective) in the
info:eu-repo/semantics/publishedVersion
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Yi, Han. „Assimilation of satellite-derived precipitation into the regional atmospheric model system (RAMS) and its impacts on the weather and hydrology in the southwest United States“. Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/280227.
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This dissertation examines the improvement in predicting weather and hydrology in the southwestern United States by assimilating satellite-derived precipitation estimates into a numerical mesoscale model. For this investigation the Regional Atmospheric Model System (RAMS) was used and Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN) were assimilated into the RAMS' own land surface scheme; Land Ecosystem Atmosphere Feedback model version 2 (LEAF-2). The simulations were conducted for periods of 36 hours--12 hours of initialization and 24 hours of prediction (from July 8th 0000 UTC to 9th 1200 UTC 1999). The control run underpredicted precipitation over southwestern Arizona and showed an excessive precipitation pattern over northeastern Arizona. This precipitation bias was also responsible for biases in surface fluxes such as soil moisture and evapotranspiration. With a realistic surface shortwave radiation adjustment and the improvement of atmospheric state variables within the central model domains during the assimilation period, there was a slight enhancement for near surface temperature and moisture. However, RAMS still performed poorly and improved only marginally for precipitation prediction. The impact of the assimilation of PERSIANN precipitation estimates on soil moisture was significant however, and this accordingly improved the 2m-high temperature and relative humidity. The general pattern of precipitation showed improvement but was still inaccurate the location and intensity of precipitation. To investigate the soil moisture-precipitation feedback mechanism, RAMS simulations were performed with varying initial soil moisture saturation rates starting from a completely dry condition of 0% to a fully saturated condition of 100%. Analysis showed that with less than 20% of initial soil moisture saturation, more than 70% of the water that precipitated into the analysis domain was due to the indirect effect of soil moisture. This explains in part why initial soil moisture improvements for the southwestern United States during the summer had a limited impact on the prediction of precipitation. Finally, model simulations were performed and analyzed to demonstrate the sensitivity of vegetation parameters in RAMS on land surface and near-surface atmospheric variables in the southwestern United States.
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Indira, Rani S. [Verfasser], Radhika [Verfasser] Ramachandran und Subrahamanyam D. [Verfasser] Bala. „Studies on Lower Atmospheric Processes over South India using Numerical Atmospheric Models and Experiments / S. Indira Rani, Radhika Ramachandran, D. Bala Subrahamanyam“. München : GRIN Verlag, 2011. http://d-nb.info/1190002655/34.
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Simões, Débora de Souza. „Análise de eventos tornádicos ocorridos no Rio Grande do Sul utilizando imagens dos satélites GOES e METEOSAT e o modelo regional RAMS“. reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/8476.
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A ocorrência de tornados sobre o Rio Grande do Sul é mais frequente do que imagina a maioria de seus habitantes. Em 08 de julho de 2003 em São Francisco de Paula, 11 de dezembro de 2003 em Antônio Prado e 11 de janeiro de 2004 em Palmares do Sul, houve a formação de um tornado que causou destruição e até mortes nestas cidades. Neste trabalho foram estudados tais eventos através da análise de imagens dos satélites GOES-12 e METEOSAT-7 nos canais do visível, do vapor d'água e do infravermelho termal, e também através de simulações obtidas com o modelo de mesoescala RAMS. Com esta finalidade efetuou-se um profundo estudo sobre o ambiente convectivo gerador de tornados. Os resultados da análise das imagens de satélite mostraram que todos os casos foram gerados em complexos convectivos associados com áreas de instabilidade. Nos casos São Francisco de Paula e Antônio Prado havia a presença de um jato de baixos níveis que transportava umidade da Bacia Amazônica alimentando os complexos convectivos. No caso Palmares do Sul a umidade foi fornecida pelo Oceano Atlântico devido ao intenso escoamento de leste do vento horizontal e ficou caracterizada a formação de nuvem do tipo vírgula invertida. A interpretação das simulações com o RAMS mostram a eficiência deste modelo em identificar áreas de convergência , divergência e vorticidade horizontal, capazes de gerar tornados. No entanto o modelo subestimou em até quatro vezes os dados de velocidade do vento horizontal e concluiu-se que o mesmo aconteceu para a velocidade vertical. Dos casos estudados, o de São Francisco de Paula foi o que apresentou o comportamento atmosférico mais compatível com o comportamento de ambiente tornádico descrito por outros autores.The occurrence of twisters in Rio Grande do Sul is more frequent than most of its citzens can imagine. In July 08, 2003 in São Francisco de Paula, December 11, 2003 in Antônio Prado and January 11, 2004 in Palmares do Sul, was registered the formation of twisters that cause destruction and even deaths in these cities. This work analises such events through the images of satellites GOES-12 and METEOSAT-7 in the visible channel, in the water vapour and in the infra-red ray, and also through simulations with the RAMS mesoscale model. With this purpose a deep study was made on the convective environment wich produces the twister. The results of the satellite images analisis shown that all the cases had been generated in convective complexes associates with instability areas. In the São Francisco de Paula and Antônio Prado cases it had the presence of a jet of low levels that carried humidity from the Amazonian Basin feeding the convective complexes. In the Palmares do Sul case the humidity was supplied by the Atlantic Ocean due to the intense draining from east of the horizontal wind and ocurrs the formation of cloud system inverted comma. The interpretation of the RAMS simulations shows the efficiency of this model in identifying horizontal convergence, divergence and vorticity areas, able to generate twisters. However, the model under estimate in up to four times the data of the wind' s horizontal speed and we concluded that the same happenes with the vertical one. From the studied cases, the São Francisco de Paula presentes the more compatible atmospheric behavior with the one wich describes the twister like environment behavior for other authors.
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Chilukoti, Ravi Kumar [Verfasser]. „Effects of irbesartan and dronedarone on in vivo gene expression signatures of left atrial tissue in a porcine model of acute rapid pacing / Ravi Kumar Chilukoti“. Greifswald : Universitätsbibliothek Greifswald, 2014. http://d-nb.info/1063986087/34.
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Barbosa, Filho Francisco. „Estudo de caso de uma empresa brasileira de grande porte do ramo de alimentos, para analisar sua tend??ncia ao modelo Beyond Budgeting“. FECAP - Faculdade Escola de Com??rcio ??lvares Penteado, 2004. http://132.0.0.61:8080/tede/handle/tede/613.
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Previous issue date: 2004-03-08This study is based on researches developed by Beyond Budgeting Round Table - BBRT, which states budgets rely on proposals anticipating contracts with fixed performances and targets, command and control, and whose benefit is delusive in a centralized management. Therefore, BBRT considers organizations are searching for a new easily elaborated tool able to provide the enterprises with aggregated value. Replacing a management model that makes use of budgets, BBRT, a budgeting evolution originated in the beginning of the 20th century, introduces a new way to manage organizations. Thus, this study analyzes Beyond Budgeting, a new management model examining the behavioral aspect. As reported by its researches, this new model assures substantial profits and has advantage over the competition due to innovative management techniques. Beyond Budgeting focuses on the fact that enterprises are to start applying flexible processes and to go through radical decentralization, also called radical devolution or empowerment. Accordingly, this study focuses on showing the principles of Beyond Budgeting, which is a model for the present times as stated by its researchers once enterprises currently need a management model providing speed, agility and adaptability to the decision-making process. The Beyond Budgeting conception is originated with this approach and it aims at discontinuing the centralized budgeting management model and adopting a new model offering potential benefits, introducing new processes which support the strategy, and increasing the values of both clients and shareholders by means of coherent decisions as well as to management improving competitiveness. This new model is neither thoroughly known nor integrated to the everyday activities or enterprises in Brazil yet applied by many companies in various countries throughout Europe, North America and a part of Oceania. Due to the approach adopted for the subject, a bibliographic study providing theoretical support and an empirical research on the study case of Sadia S/A, a worldwide-renowned Brazilian enterprise applying the budgeting management model, have been elaborated. Therefore, this study comprises a research seeking evidence among Sadia S/A's businessmen with the intention to consider whether it is inclined and able to adopt the principles of the new management model being studied. The BBRT research tool, including the analysis criteria to validate the hypothesis, was used in and wholly applied to the enterprise.
Este estudo baseia-se nas pesquisas do Beyond Budgeting Round Table - BBRT, que afirma que os or??amentos ap??iam propostas que predizem contratos de desempenhos e objetivos fixados, comando e controle, cujo benef??cio ?? ilus??rio em uma gest??o centralizada. Logo, o BBRT tem o entendimento que as organiza????es est??o em busca de uma nova ferramenta que possa ser de f??cil elabora????o e fornecer valor agregado ??s empresas. Em substitui????o ao modelo de gest??o que utiliza or??amento, o BBRT sugere uma nova maneira de gerir as organiza????es. Portanto, este trabalho estuda o Beyond Budgeting um novo modelo de gest??o, que discute o lado comportamental, al??m de ser uma evolu????o do or??amento que nasceu no princ??pio do s??culo XX. Conforme os seus pesquisadores, este novo modelo promete ganho substancial, com avan??o sobre a concorr??ncia, por meio de t??cnicas inovadoras de gest??o. O foco do Beyond Budgeting ?? que as empresas devem partir para processos flex??veis e uma descentraliza????o radical, tamb??m chamada de devolu????o radical, ou empowerment. Nesse sentido, o enfoque deste trabalho ?? apresentar os princ??pios do Beyond Budgeting, que segundo os seus pesquisadores, ?? um modelo para o momento atual, pois, nos dias de hoje, as empresas precisam de uma gest??o que proporcione velocidade, agilidade e adaptabilidade do processo decis??rio. Sob essa abordagem, origina-se a concep????o do Beyond Budgeting em abandonar o modelo de gest??o centralizado com or??amento e os benef??cios potenciais em adotar o novo modelo, apresentando os processos que ap??iam a estrat??gia, organiza????es que aumentam os valores dos clientes e acionistas, por meio de decis??es coerentes, e uma gest??o que melhora o desempenho competitivo. Este novo modelo n??o ?? suficientemente conhecido e integrado ao cotidiano das organiza????es no Brasil, mas, j?? ?? utilizado em v??rias empresas, em diversos pa??ses da Europa, Am??rica do Norte e parte da Oceania. Diante da abordagem dada ao tema, foi elaborado um estudo bibliogr??fico para dar suporte te??rico e uma pesquisa emp??rica, na qual se faz um estudo de caso junto a Sadia S/A, empresa brasileira do ramo de alimentos, de proje????o nacional e internacional, cujo modelo de gest??o utiliza o or??amento. Dessa forma, nesse trabalho tem-se uma pesquisa que busca evid??ncias entre os executivos da Sadia S/A com o intuito de examinar se ela tem tend??ncia e est?? apta aos princ??pios do novo modelo de gest??o em estudo. Foi utilizado o mesmo instrumento de pesquisa do BBRT, o qual foi aplicado na empresa em sua integra, incluindo os crit??rios de an??lise para validar ou n??o a hip??tese.
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MELO, Ewerton Cleudson de Sousa. „Simulação numérica das interações biosfera-atmosfera em área de caatinga: uma análise da expansão agrícola em ambiente semiárido“. Universidade Federal de Campina Grande, 2011. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1437.
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EWERTON CLEUDSON DE SOUSA MELO - TESE (PPGMet) 2016.pdf: 4714414 bytes, checksum: 399def91bcd71b3e8a00a6b001dcfd4b (MD5)Made available in DSpace on 2018-08-14T10:58:52Z (GMT). No. of bitstreams: 1 EWERTON CLEUDSON DE SOUSA MELO - TESE (PPGMet) 2016.pdf: 4714414 bytes, checksum: 399def91bcd71b3e8a00a6b001dcfd4b (MD5) Previous issue date: 2011-06-30
CNPq
Neste trabalho a versão 6.0 do modelo numérico RAMS (Regional Atmospheric Modeling System) é usada com o objetivo principal de simular a influência da expansão agrícola nas trocas de água e energia em áreas de Caatinga, e quantificar os efeitos das mudanças na cobertura e uso da terra na geração de circulações termicamente induzidas e na atividade convectiva. Os cenários de uso da terra investigados neste estudo foram construídos para representar condições ambientais nativas (sem influências antrópicas), e com alterações decorrentes da construção da represa de Sobradinho, e da expansão de atividades agrícolas e irrigação em região de clima semiárido. O ambiente atmosférico de grande escala é caracterizado pela estrutura dinâmica e termodinâmica típica da área central de um vórtice ciclônico de altos níveis (VCAN). A escolha do período de estudo teve como objetivo garantir condições ambientais com ampla diversidade agrícola em áreas de Caatinga (culturas de sequeiro e agricultura irrigada), e pouca nebulosidade. A evolução temporal da precipitação convectiva acumulada nas simulações da expansão agrícola mostra diferenças marcantes nos efeitos da agricultura de sequeiro e vegetação irrigada. O aumento na taxa da evapotranspiração nas áreas irrigadas eleva consideravelmente o teor de umidade nos baixos níveis da troposfera, reduz a temperatura do ar e diminui a precipitação convectiva. A descontinuidade na umidade e tipo de cobertura vegetal modifica a intensidade e distribuição dos fluxos turbulentos que são importantes na formação dos gradientes de pressão que geram circulações de brisa (brisa lacustre e de vegetação), de forma que o domínio nos transportes verticais de calor e água passa a ser da mesoescala. Verificou-se que as principais forçantes locais na determinação da distribuição espacial dos fluxos turbulentos e da chuva convectiva foram a topografia e a descontinuidade no teor de umidade do solo. Com relação a estabilidade atmosférica percebeu-se a existência de uma relação quase linear entre a Energia Potencial Convectiva Disponível (CAPE) e a temperatura potencial equivalente.
In this work the version 6.0 of the numerical model RAMS (Regional Atmospheric Modeling System) is used with the main objective of simulating the influence of agricultural expansion on the water and energy exchange in Caatinga vegetation areas, and to quantify the effects that changes on soil use and coverage have on the generation of thermally induced circulations and convective activity. The scenarios of soil use investigated are designed to represent native environmental conditions (without anthropogenic influences) and with alterations due to the implementation of the Sobradinho reservoir, and the expansion of agricultural activities and irrigation in a semiarid climate area. The large scale atmospheric ambient is characterized by the dynamic and thermodynamic structure typical of the central area of an upper level cyclonic vortex. The period of study was chosen aiming at environmental conditions with largely diversified agricultural use in Caatinga vegetation areas (agriculture with and without irrigation), and almost cloudless skies. The temporal evolution of the accumulated convective precipitation in the numerical simulations of the agricultural expansion shows large differences in the effects of agriculture with and without irrigation. The irrigated areas higher evapotranspiration rate causes a substantial increase in the moisture content in the lower troposphere, and lower the air temperature and convective precipitation.
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Chabaud, François. „La fonction analytique. Freud, Jung, Lacan : Approche transdisciplinaire“. Phd thesis, Université Paul Valéry - Montpellier III, 2012. http://tel.archives-ouvertes.fr/tel-00823278.
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Cette thèse propose un éclairage sur la réalité de la Fonction analytique, sa physiologie, et les pathologies comportementales qui résultent de son dysfonctionnement. Nous y visitons les travaux de Freud, Jung et Lacan. Par une approche de comparatisme de leurs " écritures respectives ", nous découvrons les fondements de la Fonction analytique. Tous trois tiennent leur savoir d'une approche transdisciplinaire (mythologie, alchimie, Taoïsme, linguistique, mathématiques, etc.) Freud précise le rôle indispensable de la pulsion en décrivant ses quatre caractéristiques. Avec son travail sur le "Bloc-notes magique ", il énonce les modalités de la gravure psychique. La physiologie analytique comprend deux stades distincts : le premier ou " tronc commun " correspond à la gravure de la trace mnésique (Freud). Ce stade se déroule selon le mode binaire : ça pour Freud, persona pour Jung, imaginaire pour Lacan. Le second, se développe à partir du tronc commun, selon la modalité ternaire : la structure arborescente. C'est le stade du moi de Freud, du moi de Jung, du réel de Lacan. Cette phase, comme celle du brassage inter-chromosomique de la méiose biologique, produit une infinité de combinaisons. Modes binaire et ternaire représentent les phases principales de la Fonction analytique. Mais le mode binaire ne doit pas faire barrage au mode ternaire, en enfermant la psyché dans l'imaginaire (Lacan). La psyché doit se dépasser et faire oeuvre d'artiste. Nous montrons que le déséquilibre de l'archétype anima/animus (Jung) est cause de ces pathologies. Nous y voyons également que " la pensée judéo-chrétienne " joue un rôle de censeur, et fait obstacle à la modélisation ternaire.