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Dissertations / Theses on the topic 'Interval uncertainty'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Rekuc, Steven Joseph. "Eliminating Design Alternatives under Interval-Based Uncertainty." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7218.

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Typically, design is approached as a sequence of decisions in which designers select what they believe to be the best alternative in each decision. While this approach can be used to arrive at a final solution quickly, it is unlikely to result in the most-preferred solution. The reason for this is that all the decisions in the design process are coupled. To determine the most preferred alternative in the current decision, the designer would need to know the outcomes of all future decisions, information that is currently unavailable or indeterminate. Since the designer cannot select a single a

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2

Pawlik, Amadeusz, and Henry Andersson. "Visualising Interval-Based Simulations." Thesis, Högskolan i Halmstad, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28592.

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Acumen is a language and tool for modeling and simulating cyber-physical systems. It allows the user to conduct simulations using a technique called rigorous simulation that produces results with explicit error bounds, expressed as intervals. This feature can be useful when designing and testing systems where the reliability of results or taking uncertainty into account is important. Unfortunately, analyzing these simulation results can be difficult, as Acumen supports only two ways of presenting them: raw data tables and 2D-plots. These views of the data make certain kinds of analysis cumbers

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3

Xiao, Naijia. "Interval finite element approach for inverse problems under uncertainty." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54336.

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Inverse problems aim at estimating the unknown excitations or properties of a physical system based on available measurements of the system response. For example, wave tomography is used in geophysics for seismic waveform inversion; in biomedical engineering, optical tomography is used to detect breast cancer tissue; in structural engineering, inversion techniques are used for health monitoring and damage detection in structural safety evaluation. Inverse solvers depend on the type of measurement data the unknown parameters to be estimated. The work in this thesis focuses on structural paramet

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4

Rocco, Claudio. "Techniques to analyse system performance under uncertainty." Thesis, Robert Gordon University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313442.

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5

Hall, James William. "Uncertainty management for coastal defence systems." Thesis, University of Bristol, 1999. http://hdl.handle.net/1983/9b1c8d07-24f0-48b9-bb7f-73d8d7c40ae6.

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6

Shinde, Krushna. "Interval uncertainty method to treat inconsistent measurements in inverse problems." Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2594.

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Le problème inverse consiste à trouver les valeurs des paramètres d’un modèle physique à partir d’un ensemble de mesures. Dans les problèmes de génie mécanique, la caractérisation du comportement des matériaux nécessite une méthode inverse pour identifier les paramètres des matériaux. Le problème d’identification déterministe est généralement sensible aux données, et une façon de résoudre ce problème est de prendre en compte les incertitudes dans les données. Bien que plusieurs de ces méthodes existent dans la littérature, la plupart d’entre elles utilisent la minimisation des moindres carrés

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7

Gyekye, Kwame Boakye. "Interval-valued Uncertainty Capability Indices with South African Industrial Applications." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/12947.

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Includes bibliographical references.<br>Since the advent of statistical quality control and process capability analysis, its study and application has gained tremendous attention both in academia and industry. This attention is due to its ability to describe the capability of a complex process adequately, simply (i.e. using a unitless index) and also in some instances to compare different manufacturing processes. However, the application of statistical quality control has come under intense criticism, notably in one car manufacturing industry where the actual number of non-conforming units con

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Eyoh, Imo. "Interval type-2 Atanassov-intuitionistic fuzzy logic for uncertainty modelling." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51441/.

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This thesis investigates a new paradigm for uncertainty modelling by employing a new class of type-2 fuzzy logic system that utilises fuzzy sets with membership and non-membership functions that are intervals. Fuzzy logic systems, employing type-1 fuzzy sets, that mark a shift from computing with numbers towards computing with words have made remarkable impacts in the field of artificial intelligence. Fuzzy logic systems of type-2, a generalisation of type-1 fuzzy logic systems that utilise type-2 fuzzy sets, have created tremendous advances in uncertainty modelling. The key feature of the typ

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9

Saad, Aya Hassan [Verfasser]. "CDF-intervals: a probabilistic interval constraint framework to reason about data with uncertainty / Aya Hassan Saad." Ulm : Universität Ulm, 2016. http://d-nb.info/1101578289/34.

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10

Zhang, Hao. "Nondeterministic Linear Static Finite Element Analysis: An Interval Approach." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-08232005-020145/.

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Thesis (Ph. D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2006.<br>White, Donald, Committee Member ; Will, Kenneth, Committee Member ; Zureick, Abdul Hamid, Committee Member ; Hodges, Dewey, Committee Member ; Muhanna, Rafi, Committee Chair ; Haj-Ali, Rami, Committee Member.

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11

Batarseh, Ola. "AN INTERVAL BASED APPROACH TO MODEL INPUT UNCERTAINTY IN DISCRETE-EVENT SIMULATION." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2540.

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The objective of this research is to increase the robustness of discrete-event simulation (DES) when input uncertainties associated models and parameters are present. Input uncertainties in simulation have different sources, including lack of data, conflicting information and beliefs, lack of introspection, measurement errors, and lack of information about dependency. A reliable solution is obtained from a simulation mechanism that accounts for these uncertainty components in simulation. An interval-based simulation (IBS) mechanism based on imprecise probabilities is proposed, where the statis

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12

Alparslan, Gok Sirma Zeynep. "Cooperative Interval Games." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610337/index.pdf.

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Interval uncertainty affects our decision making activities on a daily basis making the data structure of intervals of real numbers more and more popular in theoretical models and related software applications. Natural questions for people or businesses that face interval uncertainty in their data when dealing with cooperation are how to form the coalitions and how to distribute the collective gains or costs. The theory of cooperative interval games is a suitable tool for answering these questions. In this thesis, the classical theory of cooperative games is extended to cooperative interval ga

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13

Aladi, Jabran. "Handling uncertainty : from type-1 to interval type-2 fuzzy sets and systems." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/31281/.

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Fuzzy logic systems (FLSs) are widely accepted for their ability to model and handle uncertainty. Type-2 fuzzy sets (T2 FSs) were introduced as an extension of type-1 fuzzy sets (T1 FSs). They are characterised by membership functions (MFs) that are themselves fuzzy for which the membership degrees are expressed as FSs on [0,1], and have been widely accepted as capable of modelling uncertainty with more detail than T1 FSs. Interval type-2 fuzzy sets (IT2 FSs) are a special type of (general) T2 FSs and currently the most widely used, due to their reduction in computational cost. The study of T2

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14

Schenk, Jason Robert. "Meta-uncertainty and resilience with applications in intelligence analysis." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1199129269.

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15

Кузовик, Вячеслав Данилович, Vyacheslav Kuzovyk, Олена Вячеславівна Булигіна, Каріна Олексіївна Безвершнюк, Olena Bulygina, and Karyna Bezvershniuk. "Establishment of reference intervals blood parameters wintering operators based measurement uncertainty." Thesis, Technical University of Sofia, 2019. https://er.nau.edu.ua/handle/NAU/44351.

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The research of the psychophysiological state of winterers of the Antarctic station "Academician Vernadsky" was carried out in order to establish the feasibility of their subsequent stay at the station and fulfill their service tasks. Short-term stay of polar explorers under difficult conditions causes stressful effects and nonspecific adaptive reactions. Their organisms must adapt to the exposure of various extreme factors and, in the first turn, natural ones. Considering that hematopoiesis is an important mechanism on which the ultimate adaptive result depends, a study of blood parameters wa

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Majba, Christopher. "A Review of Uncertainty Quanitification of Estimation of Frequency Response Functions." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1346171022.

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17

Yuan, Miao. "Corporate Default Predictions and Methods for Uncertainty Quantifications." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/81905.

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Regarding quantifying uncertainties in prediction, two projects with different perspectives and application backgrounds are presented in this dissertation. The goal of the first project is to predict the corporate default risks based on large-scale time-to-event and covariate data in the context of controlling credit risks. Specifically, we propose a competing risks model to incorporate exits of companies due to default and other reasons. Because of the stochastic and dynamic nature of the corporate risks, we incorporate both company-level and market-level covariate processes into the event in

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18

Laguna, Sanz Alejandro José. "Uncertainty in Postprandial Model Identification in type 1 Diabetes." Doctoral thesis, Editorial Universitat Politècnica de València, 2014. http://hdl.handle.net/10251/37191.

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Postprandial characterization of patients with type 1 diabetes is crucial for the development of an automatic glucose control system (Artificial Pancreas). Uncertainty sources within the patient, and variability of the glucose response between patients, are a challenge for individual patients model identification leading to poor predictability with current methods. Also, continuous glucose monitors, which have been the springboard for research towards a domiciliary artificial pancreas, still introduce large measurement errors, greatly complicating the characterization of the patient. In this

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19

Li, Kehan. "Stress, uncertainty and multimodality of risk measures." Thesis, Paris 1, 2017. http://www.theses.fr/2017PA01E068.

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Dans cette thèse, nous discutons du stress, de l'incertitude et de la multimodalité des mesures de risque en accordant une attention particulière à deux parties. Les résultats ont une influence directe sur le calcul du capital économique et réglementaire des banques. Tout d'abord, nous fournissons une nouvelle mesure de risque - la VaR du stress du spectre (SSVaR) - pour quantifier et intégrer l'incertitude de la valeur à risque. C'est un modèle de mise en œuvre de la VaR stressée proposée par Bâle III. La SSVaR est basée sur l'intervalle de confiance de la VaR. Nous étudions la distribution a

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20

Ferrer, Mallorquí Inès. "Modal interval based package for robust control." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/392159.

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Complex systems are often subjected to uncertainties that make its model difficult, if not impossible to obtain. A quantitative model may be inadequate to represent the behavior of systems which require an explicit representation of imprecision and uncertainty. Assuming that the uncertainties are structured, these models can be handled with interval models in which the values of the parameters are allowed to vary within numeric intervals. Robust control uses such mathematical models to explicitly have uncertainty into account. Solving robust control problems, like finding the robust s

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21

Innes, Neil J. "The effect of an information-limited environment on personal processing with respect to an interval of uncertainty /." Title page, contents and abstract only, 1987. http://web4.library.adelaide.edu.au/theses/09SPS/09spsi58.pdf.

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22

Xiang, Gang. "Fast algorithms for computing statistics under interval uncertainty with applications to computer science and to electrical and computer engineering /." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2007. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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23

Llaneras, Estrada Francisco. "Interval and Possibilistic Methods for Constraint-Based Metabolic Models." Doctoral thesis, Universitat Politècnica de València, 2011. http://hdl.handle.net/10251/10528.

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This thesis is devoted to the study and application of constraint-based metabolic models. The objective was to find simple ways to handle the difficulties that arise in practice due to uncertainty (knowledge is incomplete, there is a lack of measurable variables, and those available are imprecise). With this purpose, tools have been developed to model, analyse, estimate and predict the metabolic behaviour of cells. The document is structured in three parts. First, related literature is revised and summarised. This results in a unified perspective of several methodologies that use constraint-b

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24

Marko, Obrenić. "Proračun kratkih spojeva sa uvaženim neizvesnostima proizvodnje i potrošnje." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2020. https://www.cris.uns.ac.rs/record.jsf?recordId=114862&source=NDLTD&language=en.

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U disertaciji je predložen algoritam za proračun kratkih spojeva zasnovan na korelisanim intervalima. U savremenim distributivnim mrežama postoje različiti tipovi generatora koji proizvode električnu energiju iz energije obnovljivih izvora. Za takve generatore, kao i za potrošače, karakteristično je to što je njihova proizvodnja i potrošnja neizvesna. Predloženi algoritam u disertaciji uvažava te neizvesnosti, kao i korelacije između navedenih elemenata. Neizvesnosti su modelovane intervalima i direktno su uvažene u predloženom algoritmu za proračun kratkih spojeva. Algoritam je prvenstveno ra

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Gelso, Esteban Reinaldo. "A proposal for the diagnosis of uncertain dynamic systems based on interval models." Doctoral thesis, Universitat de Girona, 2009. http://hdl.handle.net/10803/7750.

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The performance of a model-based diagnosis system could be affected by several uncertainty sources, such as,model errors,uncertainty in measurements, and disturbances. This uncertainty can be handled by mean of interval models.The aim of this thesis is to propose a methodology for fault detection, isolation and identification based on interval models. The methodology includes some algorithms to obtain in an automatic way the symbolic expression of the residual generators enhancing the structural isolability of the faults, in order to design the fault detection tests. These algorithms are based

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Alsarhan, Ala'a Mohammad. "Alternative Methods of Estimating the Degree of Uncertainty in Student Ratings of Teaching." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6939.

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This study used simulated results to evaluate four alternative methods of computing confidence intervals for class means in the context of student evaluations of teaching in a university setting. Because of the skewed and bounded nature of the ratings, the goal was to identify a procedure for constructing confidence intervals that would be asymmetric and not dependent upon normal curve theory. The four methods included (a) a logit transformation, (b) a resampling procedure, (c) a nonparametric, bias corrected accelerated Bootstrapping procedure, and (d) a Bayesian bootstrap procedure. The meth

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Assavapokee, Tiravat. "Semi-Continuous Robust Approach for Strategic Infrastructure Planning of Reverse Production Systems." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7945.

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Growing attention is being paid to the problem of efficiently designing and operating reverse supply chain systems to handle the return flows of production wastes, packaging, and end-of-life products. Because uncertainty plays a significant role in all fields of decision-making, solution methodologies for determining the strategic infrastructure of reverse production systems under uncertainty are required. This dissertation presents innovative optimization algorithms for designing a robust network infrastructure when uncertainty affects the outcomes of the decisions. In our context, robustness

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Hamrawi, Hussam. "Type-2 fuzzy alpha-cuts." Thesis, De Montfort University, 2011. http://hdl.handle.net/2086/5137.

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Systems that utilise type-2 fuzzy sets to handle uncertainty have not been implemented in real world applications unlike the astonishing number of applications involving standard fuzzy sets. The main reason behind this is the complex mathematical nature of type-2 fuzzy sets which is the source of two major problems. On one hand, it is difficult to mathematically manipulate type-2 fuzzy sets, and on the other, the computational cost of processing and performing operations using these sets is very high. Most of the current research carried out on type-2 fuzzy logic concentrates on finding mathem

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García, Jaramillo Maira Alejandra. "Prediction of postprandial blood glucose under intra-patient variability and uncertainty and its use in the design of insulin dosing strategies for type 1 diabetic patients." Doctoral thesis, Universitat de Girona, 2011. http://hdl.handle.net/10803/52564.

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In this thesis I propose a novel method to estimate the dose and injection-to-meal time for low-risk intensive insulin therapy. This dosage-aid system uses an optimization algorithm to determine the insulin dose and injection-to-meal time that minimizes the risk of postprandial hyper- and hypoglycaemia in type 1 diabetic patients. To this end, the algorithm applies a methodology that quantifies the risk of experiencing different grades of hypo- or hyperglycaemia in the postprandial state induced by insulin therapy according to an individual patient’s parameters. This methodology is based on mo

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Campos, José Renato. "Problemas de controle ótimo intervalar e intervalar fuzzy /." Ilha Solteira, 2018. http://hdl.handle.net/11449/157499.

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Orientador: Edvaldo Assunção<br>Resumo: Neste trabalho estudamos problemas de controle ótimo intervalar e intervalar fuzzy. Em particular, propomos problemas de controle ótimo via teoria de incerteza generalizada e teoria dos conjuntos fuzzy. Dentre os vários tipos de incerteza generalizada utilizamos apenas a intervalar. Embora as abordagens do processo de solução dos problemas de controle ótimo intervalar e intervalar fuzzy sejam similares, as premissas iniciais para o uso e identificação de aplicação delas em problemas práticos são distintas assim como é distinto o processo de tomada de dec

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Wang, Jian. "Interval-based uncertain reasoning." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0014/MQ33462.pdf.

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Iqbal, Muhammad Sohail. "Continuum robot modeling with guaranteed approach." Thesis, Paris Est, 2010. http://www.theses.fr/2010PEST1027.

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Contrairement aux robots conventionnels, les robots continuums ne possèdent ni de liaisons discrètes, ni de corps rigides. Leur courbure est continue, similaire à celle des trompes ou des tentacules animales. Le développement de ce type de robots pour les applications médicales soulève plusieurs problèmes : optimisation de la conception, modélisation cinématique, choix des capteurs et commande en temps réel. Les techniques actuelles pour la modélisation des robots continuums ne tiennent pas compte les incertitudes inhérentes au système. La prise en compte de ces incertitudes est d'une importan

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Banal, Estañol Albert. "Horizontal Mergers: Uncertainty and Internal Organisation." Doctoral thesis, Universitat Autònoma de Barcelona, 2003. http://hdl.handle.net/10803/4037.

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Aquesta tesi amplia l'anàlisi teòric de les fusions entre empreses del mateix sector, les anomenades fusions horitzontals. El primer objectiu és d'identificar causes que porten a l'enorme tendència de les indústires a consolidar-se. El segon és estudiar l'impacte de les fusions tan en el nivell de preus com en el benestar de la societat. Més precisament, s'analitzen els guanys en eficiència i si aquests poden compensar els efectes anticompetitius. Així, l'anàlisi és rellevant per millorar el disseny dels sistemes de control de fusions dels serveis de defensa de la competència. <br/>El primer c

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Beisler, Matthias Werner. "Modelling of input data uncertainty based on random set theory for evaluation of the financial feasibility for hydropower projects." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-71564.

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The design of hydropower projects requires a comprehensive planning process in order to achieve the objective to maximise exploitation of the existing hydropower potential as well as future revenues of the plant. For this purpose and to satisfy approval requirements for a complex hydropower development, it is imperative at planning stage, that the conceptual development contemplates a wide range of influencing design factors and ensures appropriate consideration of all related aspects. Since the majority of technical and economical parameters that are required for detailed and final design can

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Vasireddy, Sashank. "Decision-based design under uncertainty with intervals." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Vasireddy_09007dcc80642f0b.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2009.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed April 21, 2009) Includes bibliographical references (p. 66-69).

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Drehmer, Luis Roberto Centeno. "Otimização robusta multiobjetivo por análise de intervalo não probabilística : uma aplicação em conforto e segurança veicular sob dinâmica lateral e vertical acoplada." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/169336.

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Esta Tese propõe uma nova ferramenta para Otimização Robusta Multiobjetivo por Análise de Intervalo Não Probabilística (Non-probabilistic Interval Analysis for Multiobjective Robust Design Optimization ou NPIA-MORDO). A ferramenta desenvolvida visa à otimização dos parâmetros concentrados de suspensão em um modelo veicular completo, submetido a uma manobra direcional percorrendo diferentes perfis de pista, a fim de garantir maior conforto e segurança ao motorista. O modelo multicorpo possui 15 graus de liberdade (15-GDL), dentre os quais onze pertencem ao veículo e assento, e quatro, ao modelo

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Genbäck, Minna. "Uncertainty intervals and sensitivity analysis for missing data." Doctoral thesis, Umeå universitet, Statistik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-127121.

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In this thesis we develop methods for dealing with missing data in a univariate response variable when estimating regression parameters. Missing outcome data is a problem in a number of applications, one of which is follow-up studies. In follow-up studies data is collected at two (or more) occasions, and it is common that only some of the initial participants return at the second occasion. This is the case in Paper II, where we investigate predictors of decline in self reported health in older populations in Sweden, the Netherlands and Italy. In that study, around 50% of the study participants

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Smidi, Ali Ahmad. "Abordagem analítica e numérica de técnicas de otimização baseadas na redução de intervalos de incerteza." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/4654.

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Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-10-16T14:58:29Z No. of bitstreams: 2 Dissertação - Ali Ahmad Smidi - 2015.pdf: 3816502 bytes, checksum: 2de9ac5a926f797906194c9463dfaeec (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-10-16T15:01:13Z (GMT) No. of bitstreams: 2 Dissertação - Ali Ahmad Smidi - 2015.pdf: 3816502 bytes, checksum: 2de9ac5a926f797906194c9463dfaeec (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Made availab

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Blumer, Joel David. "Cross-scale model validation with aleatory and epistemic uncertainty." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53571.

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Nearly every decision must be made with a degree of uncertainty regarding the outcome. Decision making based on modeling and simulation predictions needs to incorporate and aggregate uncertain evidence. To validate multiscale simulation models, it may be necessary to consider evidence collected at a length scale that is different from the one at which a model predicts. In addition, traditional methods of uncertainty analysis do not distinguish between two types of uncertainty: uncertainty due to inherently random inputs, and uncertainty due to lack of information about the inputs. This thesis

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Meehan, Ashley Anne. "The role of internal communication in the management of organisational uncertainty." Thesis, University of Ulster, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.593633.

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In light of the challenging environment within which businesses currently operate, it is increasingly important that organisational leaders recognise the value of communication. Guided by Organisational Communication Theory and Uncertainty Management Theory, this research explores the role of internal communication in the management of organisational uncertainty. Although previous studies have acknowledged the value of internal communication in the management of uncertainty, to date, there is a dearth of research into the relationship between the concepts in any significant depth. Additionally

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Vijayvargiya, Abhishek. "Multiobjective Optimization of Uncertain Mechanical Systems." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_theses/224.

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This thesis is aimed at the optimum design of uncertain mechanical components and systems involving multiple objectives and constraints. There are various mechanical and design problems that are encountered every now and then which require the output that equalize several conflicting objectives. In recent years several methods have been developed to find a solution to multiobjective problems. The most efficient method for obtaining a compromise solution is the game theory method, which is based on the Pareto minimum or optimum solution. A thorough methodology is developed, and subsequently app

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Sanchez, Maria Cristina. "Uncertainty and Confidence Intervals of the Monte Carlo Ray-Trace Method in Radiation Heat Transfer." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/29956.

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The primary objective of the work reported here is to develop a methodology to predict the uncertainty associated with radiation heat transfer problems solved using the Monte Carlo ray-trace method (MCRT). Four equations are developed to predict the uncertainty of the distribution factor from one surface to another, the global uncertainty of all the distribution factors in an enclosure, the uncertainty of the net heat flux from a surface, and the global uncertainty of the net heat flux from all the surfaces in an enclosure, respectively. Numerical experiments are performed to successfully vali

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Glundberg, Stian Borge. "Collective hunt means bigger prey : A study of internal communication challengesmicro-enterprises face in everyday work." Thesis, Uppsala universitet, Medier och kommunikation, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-209612.

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The aim of this thesis is to identify communication challenges in micro-organizations. Thisthesis defines theoretical areas such as organizational communication and internalcommunication, with a focus on competence, uncertainty, and work disruptions. The methodsused in the collection of empirical material were participant observation, semi-structuredinterviews, and an e-mail survey. This material in combination with the theoretical backgroundhas showed the importance of technical competence in order for employees to be ableto communicate effectively. The technological solutions available today

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Merheb, Rania. "Fiabilité des outils de prévision du comportement des systèmes thermiques complexes." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00969036.

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La conception des bâtiments à faible consommation d'énergie est devenue un enjeu très important dans le but de réduire au maximum la consommation d'énergie et les émissions de gaz à effet de serre associées. Pour y arriver, il est indispensable de connaître les sources potentielles de biais et d'incertitude dans le domaine de la modélisation thermique des bâtiments d'un part, et de les caractériser et les évaluer d'autre part.Pour répondre aux exigences courantes en termes de fiabilité des prévisions du comportement thermique des bâtiments, nous avons essayé dans le cadre de cette thèse de qua

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Solanki, Kiran Nainmal. "PHYSICALLY MOTIVATED INTERNAL STATE VARIABLE FORM OF A HIGHER ORDER DAMAGE MODEL FOR ENGINEERING MATERIALS WITH UNCERTAINTY." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11062008-200935/.

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Many experiments demonstrate that isotropic ductile materials used in engineering applications develop anisotropic damage and shows significant variation in elongation to failure. This anisotropic damage is manifest by material microstructural heterogeneities and morphological changes during deformation. The variation in elongation to the failure could be attributed to the uncertainties in the material microstructure and loading conditions. To study this deformation induced anisotropy arising from the initial material heterogeneities, we first performed uncertainty analysis using current form

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Marsh, Jan H. "An uncertainty quantification of the variation of internal heat transfer coefficients and the effect on airfoil life." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4529.

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Investigated values include 5%, 10% and 20% for the straight ribbed passages and 10%, 20%, and 40% for both the tip and hub turns. As expected there is a significant dependence of low cycle fatigue life to the variation in internal heat transfer coefficients. For the 20/40% case, variations in life as high as 50-60% are recorded, furthermore a trend is observed showing that as the magnitude of the uncertainty range of internal heat transfer coefficients narrows so does the range of the low cycle fatigue life uncertainty.; Uncertainty in accurately knowing applied internal heat transfer coeffic

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Hernandez-Sabio, Sylvain. "Contribution à la métrologie des faibles forces : traçabilité des mesures dynamiques par inversion ensembliste." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCD058.

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Cette thèse est une contribution à la métrologie des faibles forces qui s'inscrit dans la continuité des activités de recherche menées au département AS2M de l'institut FEMTO-ST. Ce manuscrit présente la conception et la mise en œuvre expérimentale d'un accéléromètre pendulaire triaxial qui mesure les composantes non filtrées du régime sismique, puisque ces dernières sont susceptibles de perturber le fonctionnement d'une balance de micro-nanoforce électromagnétique actuellement en développement. Une méthodologie alternative de calcul est également proposée dans ce manuscrit afin d'estimer spéc

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SCHEPP, KAREN GULSETH. "FACTORS INFLUENCING THE COPING EFFORT OF PARENTS OF HOSPITALIZED CHILDREN (UNCERTAINTY, SITUATIONAL CONTROL, ANXIETY, ADAPTATION, PREDICTABILITY)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187917.

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The purpose of this study was to investigate the impact of three factors, the expectation of events, situational control and situational anxiety, on the coping effort of parents of acutely ill hospitalized children. A secondary purpose was to determine the influence of the parents' locus of control orientation on the parents' coping effort. Coping effort was defined as the amount of behavior, both action oriented and intrapsychic, employed by parents to master, tolerate, reduce or minimize stressful events encountered during their child's hospitalization. The study utilized a mathematical corr

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Pereda, Sebastián Diego de. "Methods for the treatment of uncertainty in dynamical systems: Application to diabetes." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/54121.

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[EN] Patients suffering from Type 1 Diabetes are not able to secrete insulin, thus, they have to get it administered externally. Current research is focused on developing an artificial pancreas, a control system that automatically administers insulin according to patient's needs. The work presented here aims to improve the efficiency and safety of control algorithms for artificial pancreas. Glucose-insulin models try to mimic the administration of external insulin, the absorption of carbohydrates, and the influence of both of them in blood glucose concentration. However, these processes are i

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Rangoni, Bernardo. "Uncertainty and experimentalist policymaking in internal market regulation by the European Commission : cases on electricity and gas policy." Thesis, London School of Economics and Political Science (University of London), 2016. http://etheses.lse.ac.uk/3586/.

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Although the new architecture of experimentalist governance has been influential in academic scholarship as well as in policy debates over the last two decades, its actual impact on policymaking is still largely unclear. Specifically, questions about whether, under what conditions and how it influences policymaking processes remain largely unsolved. Without an adequate analysis of experimentalist policymaking, the current scholarship confines our understanding to the diffusion of experimentalist architectures, ultimately resulting in a poor understanding of their effects on policymaking proces

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