Дисертації з теми "Under pressure decision model"
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Savage, David A. "Decision making under pressure : a behavioural economics perspective." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/64106/1/David_Savage_Thesis.pdf.
Smith, Charles Adams Plater. "Decision-making under time pressure: The effects of time pressure on information search strategy, decision strategy, consistency, and outcome quality." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185066.
Brooks, Scott M. "Decision making under time pressure : examination within a job interview context /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487775034177871.
Dickter, David Nathan. "The role of time orientation in decision-making under time pressure /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487946103565876.
Dickter, David N. "The role of time orientation in decision making under time pressure." Connect to resource, 1997. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1250528229.
Marshall, Alyssa. "Toward a Model of Team Decision Making Under Stress." Honors in the Major Thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1621.
B.S.
Bachelors
Psychology
Sciences
Stone, Thomas M. "Model development decisions under uncertainty in conceptual design." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44835.
Lundström, Anton, and Hugo Andersson. "Nyckeln till self-efficacy : Beslutsfrihet, stress från föräldrar och optimism under sena tonåren." Thesis, Mälardalens högskola, Akademin för hälsa, vård och välfärd, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-28395.
Hunt, Laurence T. "Modelling human decision under risk and uncertainty." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:244ce799-7397-4698-8dac-c8ca5d0b3e28.
Haddad, Marcel Adonis. "Nouveaux modèles robustes et probabilistes pour la localisation d'abris dans un contexte de feux de forêt." Electronic Thesis or Diss., Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLD021.
The location of shelters in different areas threatened by wildfires is one of the possible ways to reduce fatalities in acontext of an increasing number of catastrophic and severe forest fires. The problem is basically to locate p sheltersminimizing the maximum distance people will have to cover to reach the closest accessible shelter in case of fire. Thelandscape is divided in zones and is modeled as an edge-weighted graph with vertices corresponding to zones andedges corresponding to direct connections between two adjacent zones. Each scenario corresponds to a fire outbreak ona single zone (i.e., on a vertex) with the main consequence of modifying evacuation paths in two ways. First, an evacuationpath cannot pass through the vertex on fire. Second, the fact that someone close to the fire may have limited choice, ormay not take rational decisions, when selecting a direction to escape is modeled using a new kind of evacuation strategy.This evacuation strategy, called Under Pressure, induces particular evacuation distances which render our model specific.We propose two problems with this model: the Robust p-Center Under Pressure problem and the Probabilistic p-CenterUnder Pressure problem. First we prove hardness results for both problems on relevant classes of graphs for our context.In addition, we propose polynomial exact algorithms on simple classes of graphs and we develop mathematical algorithmsbased on integer linear programming
Junior, Etienne Américo Cartolano. "A model for trust under a suitcase word perspective." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-16082017-151433/.
Trust, que em português não possui uma tradução que reflita a sua complexidade, é um fenômeno fundamental para os relacionamentos e uma peça fundamental da nossa sociedade. Trust é vivenciada diariamente pelas pessoas, seja em um empréstimo entre amigos, em uma transação de comércio eletrônico, na relação entra uma mãe e um filho, na conexão entre agentes autônomos, ou para demonstrar a nossa fé. No caso específico da ciência da Biodiversidade, trust é um dos pilares dos projetos de Ciência Cidadã, que ajudam a resolver a falta de dados de biodiversidade engajando cidadãos para trabalhar como voluntários para solucionar o problema. Medir e simular trust nestes projetos pode revelar ou antecipar perdas, por exemplo, o descarte de dados devido à falta de trust na capacidade técnica dos voluntários, abrindo oportunidades para sua gestão e incentivo. Contudo, trust é um conceito difícil de definir. A palavra pode carregar muitos significados, tais como honestidade, segurança, integridade, competência, etc., e esta é uma característica das suitcase words (palavras-mala). Adotar uma perspectiva de suitcase pode mudar a maneira como definimos, modelamos e simulamos trust, pois as pessoas poderiam identificar, decodificar, e simular vários significados de trust com uma única abordagem. Neste cenário, o objetivo principal desta pesquisa foi verificar as hipóteses de que 1) trust é uma suitcase word e de que 2) trust pode ser modelada e simulada em uma perspectiva de suitcase com potencial para manipulação de diferentes significados. Uma análise de distribuição utilizando o banco de dados Web of Science foi suficiente para confirmar a primeira hipótese de que trust é uma suitcase word, pois uma análise dos seus registros de citações mostrou que trust é estudado por muitas disciplinas da ciência, e além disso, mapas de co-ocorrência de palavraschaves mostraram que os significados de trust nas disciplinas podem ser diferentes. Para verificar a segunda hipótese, nós propusemos um framework com três componentes: 1) um \'modelo suitcase\' para identificar diferentes significados de trust, que é o objetivo principal deste trabalho, 2) um procedimento para detalhar as situações de trust em componentes do modelo suitcase, e 3) um modelo de decisão comportamental sobre confiança, que foi necessário para nossa simulação, uma vez que trust e controle tem papéis complementares no desenvolvimento da confiança, e consequentemente, na exibição de um comportamento de confiança que pode levar à cooperação. No nosso modelo, a decisão de trust o trustee (aquele a quem trust é direcionada) depende da capacidade do trustor (aquele que direciona trust) em aceitar riscos (= trustfulness), e da avaliação do interesse e da capacidade do trustee em agir como o esperado (= trustworthiness). De uma maneira prática, trustworthiness foi considerada como uma função das evidências esperadas e coletadas em cada situação. Nós propusemos um formalismo para o novo modelo, e depois replicamos um simulador chamado PlayGround para depois modificá-lo e incorporar o modelo suitcase. O novo simulador, o PlayGround 2.0, foi utilizado para rodar um estudo de caso utilizando situações comuns em projetos de Citizen Science. Nosso maior objetivo foi testar a hipótese de que trust poderia ser simulada em uma perspectiva de suitcase. Uma simulação bem-sucedida plotaria os agentes em campo reagindo diferentemente de acordo com as situações apresentadas. Os resultados foram como esperados, o que demonstrou a utilidade abrangente do nosso modelo, com potencial para lidar com diferentes significados de trust no contexto dos projetos de Ciência Cidadã para Biodiversidade, ou em outros contextos.
Burke, Kelly Ann. "FRIEND/FOE IDENTIFICATION ACCURACY AND SHOOTING PERFORMANCE: EFFECTS OF PRIOR TASK LOADING AND TIME PRESSURE." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3154.
Ph.D.
Department of Psychology
Sciences
Psychology PhD
Cecchini, Lee-Anne. "Robben Island penguin pressure model: a decision support tool for an ecosystems approach to fisheries management." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/10212.
The African penguin (Spheniscus demersus) population in southern Africa has declined from approximately 575 000 adults at the start of the 20th century to 180 000 adults in the early 1990s. The population is still declining, leading to the International Union for the Conservation of Nature upgrading the status of African penguins to Endangered on the Red List of Threatened Species. This dissertation uses a systems dynamics approach to produce a model incorporating all important pressures. The model is stochastic and spatially explicit, and uses expert opinion where data are not available. The model has been produced and revised with the help of the Penguin Modelling Group, based at the University of Cape Town. The modelling process culminated in a workshop where participants experimented with the model themselves. The model in this dissertation is only applicable to the penguin population on Robben Island and, as such, conclusions drawn cannot necessarily be applied to other penguin colonies.
Ibrahim, Mohamed El Hady M. "An Examination of an Integrative Expectancy Model for Auditors' Performance Behaviors Under Time Budget Pressure." Thesis, North Texas State University, 1985. https://digital.library.unt.edu/ark:/67531/metadc331382/.
Main, Daphne. "Auditor decision making under ambiguity : a test of the Einhorn and Hogarth ambiguity model." Connect to resource, 1990. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1265296896.
Deakin, Amanda Irene. "Decision-making under ambiguity : cognitive judgement bias in a bird and an insect model." Thesis, University of Bristol, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761201.
Staats, Raymond William. "An Airspace Planning and Collaborative Decision Making Model Under Safety, Workload, and Equity Considerations." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/26844.
Ph. D.
Kantanantha, Nantachai. "Crop decision planning under yield and price uncertainties." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/24676.
Committee Co-Chair: Griffin, Paul; Committee Co-Chair: Serban, Nicoleta; Committee Member: Liang, Steven; Committee Member: Sharp, Gunter; Committee Member: Tsui, Kwok-Leung
Horvath, Lilla [Verfasser]. "Computational characterization of human sequential decision making under uncertainty : Model-free, model-based, exploitative and explorative strategies / Lilla Horvath." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/1237685915/34.
Kinrade, Noel Peter. "The role of dispositional reinvestment in choking during decision-making tasks in sport." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/5512.
Höllermann, Britta [Verfasser]. "Decision-making under uncertainty in model-based water management : The science-practice interface / Britta Höllermann." Bonn : Universitäts- und Landesbibliothek Bonn, 2018. http://d-nb.info/1167857070/34.
Sabet, E. "A strategic decision making model on global capacity management for the manufacturing industry under market uncertainty." Thesis, Nottingham Trent University, 2012. http://irep.ntu.ac.uk/id/eprint/113/.
Lee, Keejoo. "A ceramic damage model for analyses of multi-layered ceramic-core sandwich panels under blast wave pressure loading." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2589.
Thesis research directed by: Aerospace Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Karlíková, Adéla. "Modelling of flow and pressure characteristics in the model of the human upper respiratory tract under varying conditions." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413820.
Shen, Gang. "Bayesian predictive inference under informative sampling and transformation." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0429104-142754/.
Keywords: Ignorable Model; Transformation; Poisson Sampling; PPS Sampling; Gibber Sampler; Inclusion Probabilities; Selection Bias; Nonignorable Model; Bayesian Inference. Includes bibliographical references (p.34-35).
Jagelka, Tomáš. "Preferences, Ability, and Personality : Understanding Decision-making Under Risk and Delay." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX028/document.
Preferences, ability, and personality predict a wide range of economic outcomes. I establish a mapping between them in a structural framework of decision-making under risk and delay using unique experimental data with information on over 100 incentivized choice tasks for each of more than 1,200 individuals.I jointly estimate population distributions of risk and time preferences complete with their individual-level stability and of people’s propensity to make mistakes. I am the first to do so using the Random Preference Model (RPM) which has been recently shown to have desirable theoretical properties over previously used frameworks. I show that the RPM has high internal validity. The five estimated structural parameters largely dominate a wide range of demographic and socio-economic variables when it comes to explaining observed individual choices between risky lotteries and time-separated payments.I demonstrate the economic and econometric significance of appending shocks directly to preferences and of incorporating the trembling hand parameter - their necessary complement in this framework. Mistakes and preference instability are not only separately identified but they are also linked to different cognitive and non-cognitive skills. I propose a Rationality Index which condenses them into a single indicator predictive of welfare loss.I use a factor model to extract cognitive ability and Big Five personality traits from noisy measures. They explain up to 50% of the variation in both average preferences and in individuals’ capacity to make consistent rational choices. Conscientiousness explains 45% and 10% respectively of the cross-sectional variation discount rates and risk aversion respectively as well as 20% of the variation in their individual-level stability. Furthermore, risk aversion is related to extraversion and mistakes are a function of cognitive ability, task design, and of effort. Preferences are stable for the median individual. Nevertheless, a part of the population exhibits some degree of preference instability consistent with imperfect self-knowledge.These results have implications both for specifying reduced form and structural economic models, and for explaining inequality and the inter-generational transmission of socioeconomic status
Grau, Moya Jordi [Verfasser], and Daniel A. [Akademischer Betreuer] Braun. "Decision-Making under Bounded Rationality and Model Uncertainty : an Information-Theoretic Approach / Jordi Grau Moya ; Betreuer: Daniel A. Braun." Tübingen : Universitätsbibliothek Tübingen, 2017. http://d-nb.info/1165578204/34.
Chinsomboon, Garrett. "New model for the 5-20 cm wavelength opacity of ammonia pressure-broadened by methane under jovian conditions based on laboratory measurements." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45858.
Biggs, Timothy James. "Studies of crystalline organic molecular materials under extreme conditions." Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:51dae806-2954-4ea7-a3cb-1980ecb53e98.
Li, Xiaogai. "Finite Element and Neuroimaging Techniques toImprove Decision-Making in Clinical Neuroscience." Doctoral thesis, KTH, Neuronik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-72345.
QC 20120201
Freitas, Taís Aparecida Vale. "O processo decisório frente à pressão do tempo: satisfação e variação dos estilos individuais de decisão." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/12570.
A instigante busca pela compreensão do comportamento humano, mais precisamente sobre os mecanismos envolvidos no processo decisório dos indivíduos, consistiu na premissa básica para a realização deste estudo. As decisões estão presentes em todos os âmbitos da vida dos indivíduos sendo de grande importância a identificação e compreensão dos fatores que podem influenciá-las. Assim, este estudo teve por objetivo verificar como os indivíduos modificam o processo decisório frente à pressão do tempo. O alcance desse objetivo ocorreu por meio de um quase experimento em laboratório utilizando três diferentes instrumentos de coleta de dados. A primeira etapa do quase experimento consistiu na escolha de um notebook utilizando o sistema de apoio à decisão Decisor (LÖBLER, 2005), a segunda etapa consistiu no preenchimento do Questionário de Sentimentos em Relação à Compra (LUCIAN, 2008) e a terceira no preenchimento do Decision Style Inventory (ROWE, 1998). A amostra foi composta por 178 alunos de graduação, divididos em 2 grupos: o grupo controle e o grupo submetido à pressão do tempo. O notebook mais escolhido pelos dois grupos foi o da marca Sony, observou-se a existência de conhecimento prévio da marca quanto à decisão de compra e também o uso da Teoria da Imagem para explicar a escolha. Os estilos individuais de decisão mais encontrados nos indivíduos submetidos à tarefa foram o analítico e o conceitual. As hipóteses foram testadas através do Teste U de Mann Whitney e do teste Qui-quadrado, contudo, as respostas obtidas nos testes não permitiram comprovar as três hipóteses estatisticamente. Sugere-se a realização de estudos mais aprofundados a fim de comprovar a existência de baixa satisfação com a escolha em decisões realizadas sob pressão do tempo.
Romanova, Mariya. "Theoretical study of the many-body electronic states of defects in diamond : the case of the NV center under high pressure." Thesis, Institut polytechnique de Paris, 2019. http://www.theses.fr/2019IPPAX013.
The aim of this thesis is to study the influence of the pressure on the optical transitions between multi-determinant ground state and excited states of the NV center from the first-principles.In this work, I study both the neutral NV0 and negatively charged NV- centers.Long-range interactions have a crucial effect in such defects: first, elastic deformations have a long range and need to be accounted for; second, when the defect has a charge, it is important to avoid spurious charge-charge interactions between neighboring supercells caused by the use of periodic boundary conditions. Thus, I study the atomic structure of defect with large supercells by the density functional theory (DFT).The NV center is a deep-center defect, its optical and magnetic properties are related with localized levels in the electronic band-gap. These levels are believed to be built out of the localized orbitals of dangling bonds pointing towards the vacancy, providing strongly correlated electronic states. Thus, an accurate quantum mechanical treatment is needed.DFT is a powerful approach for the calculation of the ground state properties of defects. However, the single Slater determinant nature of the DFT wave function lacks the non-dynamical correlations, that characterize such defects, and does not allow for the calculation of many-body levels. Moreover, exchange and correlation (XC) functionals used in DFT add have a limited accuracy.Therefore, in this PhD work, I first develop a combined DFT + Hubbard model technique. I study the triplet-triplet transition both with the PBE XC functional and the HSE06 one. I confirm that the use of the hybrid XC functional HSE06 improves the description of correlations beyond DFT-PBE and allows for more accurate prediction of optical transitions.An exact diagonalization (or in quantum chemistry language full Configuration Interaction calculations) of the Hubbard Hamiltonian in the many-electron basis constructed of in-gap localized levels, allows to get access to multi-determinant ground and excited states. I benchmark this technique comparing it to the recent state of the art methods.Finally, I apply the developed technique in order to study the effect of the hydrostatic pressure on NV- and NV0 centers. Among many results of my work, I discovered a very interesting effect related to the singlet-singlet transition in the NV-center under hydrostatic pressure. The results I have obtained during my PhD have never been calculated nor observed experimentally. In order to validate the theoretical model, I have compared our results with the measurements that have been obtained by our experimental collaborators for the optical transition in the NV- and NV0. Last but not least, the effect of the electron-phonon interaction was discussed.As a perspective, I developed a new code that can be applied to study other defect systems of interest in the quantum technologies
Marques, Sérgio Filipe Veloso. "Comportamento de uma areia artificialmente cimentada até altas tensões de confinamento." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/148695.
The search for new technical solutions to reduce construction time of engineering works and to make them more cost-effective has been object of the research lines of the group of Geotechnical Engineering of Federal University do Rio Grande do Sul. Numerous studies have been conducted to analyse and understand the behaviour of artificially cemented. Portland cement is widely used for improving strength and deformability characteristics of soils. To study the contribution of cementation under high pressures, a 10 MPa confining pressure triaxial apparatus was built to study the stress-strain-dilatancy behaviour of artificially cemented soils cured under stress. In parallel a study was conducted on a artificially cemented uniform sand at three curing times (3, 7 and 28 days) to determine the unconfined compressive strength (qu) and splitting tensile strength (qt) according to voids/cement ratio (η/Civ) dosage methodology. The results showed that strength increases with the reduction of voids/cement ratio (η/Civ) and with the increasing of cure time (t). The tensile/compression ratio (qt/qu) is independent of curing time and presents a mean value of 0.15. In addition to these results, other granular soils mixtures with distinct types of cement and different curing times were analysed. A unique normalized curve was fit to unconfined compressive strength (qu) and splitting tensile strength (qt) against voids/cement ratio (η/Civ). At the same time, the effect of the curing type (under stress or atmospheric) was verified through triaxial compression tests with mean effective stresses ranging from 250 kPa to 4000 kPa. In addition, the variation of η/Civ and cure time was evaluated for samples cured under stress. The results show that, in general, by increasing the mean effective stress, the type of cure does not affect the values of the maximum deviatoric stress. The frictional portion is predominant in the stress-strain behavior. The type of cure affects the yielding surface and the stiffness of the samples. It was observed the increase in this properties for samples cured under stress compared to samples cured with atmospheric stress. Based on the outcomes of this study, with satisfactory results, an elastoplastic model with stiffness degradation (using unconfined compressive strength (qu), friction angle (’) and an equivalent strain ( s0.7)) was proposed to simulate the stress-strain behaviour of artificially cemented sands in triaxial tests.
Kowalczyk, Piotr Jozef. "Validation and application of advanced soil constitutive models in numerical modelling of soil and soil-structure interaction under seismic loading." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/275675.
Kowalczyk, Piotr Jozef. "Validation and application of advanced soil constitutive models in numerical modelling of soil and soil-structure interaction under seismic loading." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/275675.
Savage, David A. "Economics of maritime disasters : essays on the Titanic and Lusitania." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/35730/1/David_Savage_Thesis.pdf.
Oesterle, Jonathan. "Holistic approach to designing hybrid assembly lines A comparative study of Multi-Objective Algorithms for the Assembly Line Balancing and Equipment Selection Problem under consideration of Product Design Alternatives Evaluation of the influence of dominance rules for the assembly line design problem under consideration of product design alternatives Hybrid Multi-objective Optimization Method for Solving Simultaneously the line Balancing, Equipment and Buffer Sizing Problems for Hybrid Assembly Systems Comparison of Multiobjective Algorithms for the Assembly Line Balancing Design Problem Efficient multi-objective optimization method for the mixed-model-line assembly line design problem Detaillierungsgrad von Simulationsmodellen Rechnergestützte Austaktung einer Mixed-Model Line. Der Weg zur optimalen Austaktung." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0012.
The work presented in this thesis concerns the formulation and the resolution of two holistic multi-objective optimization problems associated with the selection of the best product and hybrid assembly line configuration out of a set of products, processes and resources alternatives. Regarding the first problem, a cost model was developed in order to translate the complex interdependencies between the selection of specific product designs, processes and resources characteristics. An empirical study is proposed, which aimed at comparing, according to several multi-objective quality indicators, various resolution methods – including variants of evolutionary algorithms, ant colony optimization, particle swarm optimization, bat algorithms, cuckoo search algorithms, and flower-pollination algorithms. Several dominance rules and a problem-specific local search were applied to the most promising resolution methods. Regarding the second problem, which also considers the buffer sizing, the developed algorithms were enhanced with a genetic discrete-event simulation model, whose primary function is to evaluate the value of the various objective functions. The demonstration of the associated resolution frameworks for both problems was validated through two industrial-cases
Amawatana, Chonchinee. "Environmental performance indicators for the lower Mekong subregion development." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/16684/1/Chonchinee_Amawatana_Thesis.pdf.
Amawatana, Chonchinee. "Environmental performance indicators for the lower Mekong subregion development." Queensland University of Technology, 2008. http://eprints.qut.edu.au/16684/.
Vilchis, Medina José Luis. "Modeling of resilient systems in non-monotonic logic : application to solar power UAV." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0567/document.
This thesis presents a resilient model to pilot an aircraft based on a non-monotonic logic. This model is capable of handling solutions from incomplete, contradictory information and exceptions. This is a very well known problem in Artificial Intelligence, which has been studied for more than 40 years. To do this, we use default logic to formalise the situation and find possible conclusions. Thanks to this logic we can transform the piloting rules to defaults. Then, when we calculate the solutions, several options could result. At this point an opportunistic decision criteria takes place to choose the better solution. The control of the system is done via the property of resilence, we redefine this property as the integration of the non-monotonic logic in the Minsky’s model. As a result, it is shown that the proposed resilient model could be generalised to systems that incorporate a knowledge of the world that contains situations, objectives and actions. Finally, we present the experimental results and conclusion of the thesis discussing the prospects and challenges that exist for future directions. Different applications in other fields are taken into account for the interest of the model’s behavior
Gai, Guodong. "Modeling of water sprays effects on premixed hydrogen-air explosion, turbulence and shock waves Modeling pressure loads during a premixed hydrogen combustion in the presence of water spray Numerical study on laminar flame velocity of hydrogen-air combustion under water spray effects Modeling of particle cloud dispersion in compressible gas flows with shock waves A new formulation of a spray dispersion model for particle/droplet-laden flows subjected to shock waves Particles-induced turbulence: a critical review of physical concepts, numerical modelings and experimental investigation A new methodology for modeling turbulence induced 1 by a particle-laden flow using a mechanistic model." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMIR14.
This PhD dissertation is dedicated to develop simple models to investigate the effect of water spray system on the premixed hydrogen-air combustion in the nuclear power plants. Specific simple models are developed to describe the water droplet evaporation in the flame, particle cloud dispersion after the shock wave passage, and turbulence length scale evolution with the presence of a water spray. A methodology is proposed to evaluate the spray evaporation effects on the propagation of the turbulent hydrogen flame inside a closed volume and a simple model is developed for the quantification of the laminar velocity deceleration with the droplets evaporation inside the flame. An analytical model is proposed for the prediction of particle cloud dispersion after the shock passage in the one-way formalism and another analytical model is dedicated to describe the spray-shock interaction mechanism and predict the appearance of a particle number density peak using the two-way formalism. A review of the important criteria and physical modelings related to the particle-induced turbulence modulation is given and a mechanistic model is used for the estimation of the turbulent integral length scales induced by the injection of particle clouds. These developed numerical models can be coupled to implement in the large-scale numerical simulations of the spray system effects on the accidental hydrogen explosions in the nuclear power plants
Vilchis, Medina José Luis. "Modeling of resilient systems in non-monotonic logic : application to solar power UAV." Electronic Thesis or Diss., Aix-Marseille, 2018. http://theses.univ-amu.fr.lama.univ-amu.fr/181212_VILCHISMEDINA_706br796xrxee121bcfd495dmdd_TH.pdf.
This thesis presents a resilient model to pilot an aircraft based on a non-monotonic logic. This model is capable of handling solutions from incomplete, contradictory information and exceptions. This is a very well known problem in Artificial Intelligence, which has been studied for more than 40 years. To do this, we use default logic to formalise the situation and find possible conclusions. Thanks to this logic we can transform the piloting rules to defaults. Then, when we calculate the solutions, several options could result. At this point an opportunistic decision criteria takes place to choose the better solution. The control of the system is done via the property of resilence, we redefine this property as the integration of the non-monotonic logic in the Minsky’s model. As a result, it is shown that the proposed resilient model could be generalised to systems that incorporate a knowledge of the world that contains situations, objectives and actions. Finally, we present the experimental results and conclusion of the thesis discussing the prospects and challenges that exist for future directions. Different applications in other fields are taken into account for the interest of the model’s behavior
LUINI, LORENZO PAOLO. "Deciding Under Pressure." Doctoral thesis, 2012. http://hdl.handle.net/11573/917182.
Lin, Dyi-Yih, and 林迪意. "Decision Training for Human Rule-Based Reasoning under Time Pressure." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/66325927596114972189.
國立交通大學
工業工程與管理學系
85
In many emergency situations, human operators need to derive countermeasures based on contingency rules whilst under time pressure. Since it has been found that people tend to process information intuitively and to be overconfident regarding their performance level, it is necessary that operators be well trained in decision making for the safety-related domain. In order to contribute to the human success in playing such a role, the present study intends to examine the effectiveness of using expert systems, an excellent rule-based reasoner, to train for the desired decision performance. Emergency management of chemical spills was selected to exemplify the rule-based decision task. An expert system in this domain was developed to serve as the training tool. Forty subjects participated in an experiment in which a computerized information board was used to capture subjects'' rule-based performance under the manipulation of time pressure and training The experiment results indicate that people adapt to time pressure by accelerating their processing of rules where the heuristic of cognitive availability was employed. The simplifying strategy was found to be the source of human error in rule-based reasoning, and also the root resulting in confirmation bias that led to overconfidence. The results also show that the decision behavior of individuals who undergo the expert system training is directed to a normative and expeditious pattern, which leads to an improved level of decision accuracy and appropriate realism of confidence judgment. Implications of these findings for human decision behavior, computer-aided training, interface design, and industrial safety are examined in the present study.
Liu, Chi-Pei, and 劉季蓓. "The bid price decision model under market competition." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/00048994131620374237.
國立高雄第一科技大學
營建工程所
91
In a recession of the construction market, there are reduced work opportunities for contractors. Confronted with the austerity in the business environment, contractors would cut their bid prices to compete for a job with contract winning as a high priority. However, a price-cutting decision in the face of loss risk to get a job should not be made like gambling with results depending entirely on luck, but rather a rational choice made after careful calculations. The existing bidding models can be categorized as the probability-based model, the utility theory model, or the present worth model. The probability-based model produces a recommended optimal markup based on maximum expected profit, but the problem of the model is that in intense competition the chance of being low bid with such a markup is too low. The utility theory model produces a recommended markup based on the utility value of the job being tendered and the relation between job utility and markup from experience. The present worth model is based on cash flows analysis and required minimum rate of return without regard to how competitive a bid thus suggested will be. All these three types are non-survival-oriented models. The objective of this research is to develop an improved bidding model more suitable for use in intense competition while guiding contractors through a bid decision without taking unnecessary financial risk. Based on a study in the literature of the factors influencing bid decisions, three criteria are included in the proposed bidding model: the probability of winning, the probability of making a loss, and the need for the job. For varying bid prices being considered for a job, the estimated probabilities of winning are calculated using an existing model from historical data, whereas the probabilities of making a loss are evaluated with the probability distribution of project cost. The obtained probabilities are used along with the need for the job as inputs to a fuzzy logic system that incorporates the priorities of the decision maker in the three criteria for producing a score for each possible bid amount. The amount with the highest score is the recommended bid price. A case study involving a highway construction project is used in this research to illustrate the model. The contractor’s possible attitudes to risk, i.e. risk-taking, risk-neutral, and risk-averse, are simulated by three sets of fuzzy rules for a comparison of their effects. The results show that the model is sensitive enough to recommend bid prices in accordance with the differences in risk attitudes, thereby addressing one shortcoming of the existing models.
Chou, Pai-Ying, and 周百瑩. "A Bank Asset-Liability Model under Fuzzy Decision." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/58647656394686241336.
Yeh, Su-Fang, and 葉書芳. "The Consumer Preference Analysis under Multiattribute Decision Making Model." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/17818986168446837272.
國立臺灣大學
國際企業學研究所
93
Generally when consumers buy a product, their decision model is one kind of multiple attribute decision making model. Moreover, conjoint analysis is the most popular analysis method applied in consumer preference research under multiple attribute decision making model. However, conjoint analysis has some limits. When there are a large number of product attributes or levels within attributes, it is difficult for respondent to evalluate the stimulus, which influence the difficulty of data collection and accuracy of analysis. Base on consumer behavior theory, each consumer has different perception. Therefore, different consumer has different involvement which lead the difference of decision making. This study is intended to combine involvement concept with conjoint analysis to explore whether involvement can explain the consumer behavior under multiple attribute decision making model and whether there are preference difference between consumers having different involvement. In this study notebook and instant noodles are used to be the research products. The empirical results show: 1.There are some significant differences in preference and attributes between low-involvement and high-involvement consumers. The most important attribute for high-involvement notebook consumer is price but for low-involvement notebook consumer is brand; the most important attribute for high-involvement instant noodles consumer is flavor but for low-involvement instant noodles consumer is enclosed condiment. 2.There are some significant differences in the number of considerated attributes between low-involvement and high-involvement consumers. Generally speaking, the number of attributes that high-involvement consumer consider with is more than he number of attributes that low-involvement consumer consider with.
Yung-chang, Huang, and 黃永昌. "The Model of Local Competition Pressure under Fewer Children Impact." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/31499980590881918301.
育達科技大學
資訊管理所
103
The tendency of fewer children impacts the development of Taiwan’s education because the structure of population has been changed in Taiwan. Thus, the investigation of the phenomenon of fewer children has its urgent conditions and its important significance. This study mainly tries to discuss the affections of fewer children for local junior high and elementary schools, and investigates the influences for operating schools under the competition pressures. In addition, this work tries to find out that the disbursement policy would provide the characteristics and images of school to cope with the competition under the tendency of fewer children. Such a phenomenon would discuss through the simulation behaviors. Actually, the simulated results could provide some concrete suggestions for a school under the local competition pressures. The relevant variables of operating schools are complicate, especially in discussing the local competition pressures. In social sciences, the investigations of operating schools under competition pressure always adopt the static qualitative approach, but lacking the dynamic discussions. However, the dynamic discussions are more nearly practice. Based upon this, this paper is to construct a systems dynamic model to explore the complicate influences of operating school under the tendency of fewer children and the pressure of local competitions. Most studies of school operations are limited in static investigations, but this work is going to conduct dynamic discussions through the development of system dynamic model. The systems dynamic model not only improves the study from static level to dynamic level, but makes the discussing topics more practice. Simulated results reveal that more equipment cost input won’t make the amount of students increase linearly, it would be the referenced suggestion while policy making. In addition, the percentage policy of budget balance would adopt staged policy, the higher policy is applied in the front stage and the lower policy is adopted in the rest stage. Moreover, the higher marketing percentage policy is applied through the whole simulated period because the higher marketing percentage would result the more amount of students and the stronger competitiveness. In summary, this study can be regarded as a valuable tool because it can easily duplicate to solve other cases by changing its input parameters only. Keyword: tendency of fewer children, systems dynamic, competition pressure
Chen, Ying-Chih, and 陳英治. "Research on the Decision Making Behavior of Human Factors under Different Pressure Situations." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/7q8e26.
國立臺北科技大學
土木工程系土木與防災碩士班
105
The current domestic regulations and evacuation verification only consider the shortest-way principles to choose escape exports, making the simulation results too optimistic and ideal. When in the fire place, you have option to choose another exports when you face crowded exports. In other words, in the case of other escape exports, people have opportunity to change the route when they face stuck exports. However, in the past, simulations and researches both ignored this phenomenon. Therefore, this study hopes to explore the decision-making mode, when people face a stuck export in the fire place, and the total impacts of evacuation. This research, first, investigates the decision-making behavior of people facing blocked exports, and calculates ratios in each different situations. Furthermore, this research analysis decision trees between different pressure and every human factors, and discuss relationships between them. This study hopes to provide basis for fire place simulations and recommendations of evacuation design and planning in the future. ii According to the above experiments and data analysis, the conclusion is that even if the situation II, which is that in the first floor and no fire source, is closest to the simulation of the escape software, 70.85% of the people facing blocked exports will change to another export. This is different from the previous studies.
Lin, Ro-Sen, and 林若森. "Project risk decision model under risk preference and limited resources." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/70334134153652023262.
國立臺灣大學
工業工程學研究所
95
During the execution of a project, unexpected events usually cause delay and financial loss, these are termed project risks. As a result, in order to reduce the impact of project risk, effective risk management model becomes an important issue. This study integrates project risk analysis models proposed by scholars and introduces the concept of risk preference to establish a project risk decision model. Decision makers can evaluate each risk treatment strategy according to their own risk preference. This study establishes a project risk decision model and uses “risk decrease” to replace “effect” as the evaluating index. Furthermore, the utility based-selection decision support problem model (u-sDSP) is employed to evaluate the utility of risk treatment strategies for decision makers. Finally, the principle of integer programming is adopted to determine the optimal set of risk treatment strategies which maximizes effects with limited resources. Taking a case of Torpedo Development Project as an example, the proposed combined model is employed in the analysis, and the result is compared with those obtained form other models. In conclusion, results obtained from the proposed model of this study is better. The reason is attributed to that the project risk decision model established by this study has taken risk preference into consideration. Thus, in practical application, the proposed model can provide better decision making solutions for decision makers.