Дисертації з теми "Sensitivity to Uncertain Threat"
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Moradi, Shahrzad. "Convergent-Methods Examination of Acute Threat and Potential Threat in the Context of Anxiety Sensitivity and Intolerance of Uncertainty." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1597152577986068.
Повний текст джерелаBorger, Sharon C. "Attentional bias for threat information and anxiety sensitivity in a nonclinical sample." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ56112.pdf.
Повний текст джерелаJacob, Filho Jorge Rodrigues. "The price of threat: the role of identity-safe marketplaces in predicting intergroup price sensitivity." reponame:Repositório Institucional do FGV, 2016. http://hdl.handle.net/10438/16579.
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In field experiments with subjects living either inside or outside Brazilian slums (n=955), we show that consumers living in slums are less price sensitive, in opposition with recent price sensitivity research. Comparing slum and non-slum dwellers, we found that negatively stereotyped consumers (e.g. slum dwellers) were more likely to pay higher amounts for friendlier customer service when facing social identity threats (SITs) in marketplaces such as banks. The mechanism which makes them less price sensitive is related to the perception of how other people evaluate their social groups, and we argue that they pay more because they are seeking identity-safe commercial relationships. This work, besides extending the literature in SITs, presents a perspective for the exchange between economics and psychology on price sensitivity, showing that consumers living in slums are willing to pay more to avoid possibly social identity threating experiences.
Ahmad, Sara, and Vanessa Sved. "COVID-19-related anxiety predicted by three different psychological behaviors; Health anxiety, Disgust sensitivity and Intolerance of uncertainty." Thesis, Örebro universitet, Institutionen för juridik, psykologi och socialt arbete, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-88970.
Повний текст джерелаSyftet med studien är att examinera huruvida tre olika psykologiska beteenden; Health anxiety (SHAI), Disgust sensitivity (DS-R) och Intolerance of uncertainty (IUS-12) kan förutse COVID-19-relaterad ångest i studenter på Örebro Universitet. Det hypotiserades att det skulle finnas en signifikant relation baserat på tidigare studier. En online enkät, med både standardiserade och icke-standardiserade frågeformulär, konstruerades. Antal deltagare som kompletterade enkäten genom Limesurvey var 199 studenter mellan åldrarna 19–48 (M = 25.14 och SD = 5.35) från Örebro Universitet. Genom en korrelationsanalys kunde man se att både Health anxiety och Disgust sensitivity var signifikant korrelerade med COVID-19-relaterad Pandemi. Avslutningsvis, en multipel regressionsanalys visade att Health anxiety, Disgust sensitivity och Intolerance of uncertainty var signifikant relaterat med COVID-19-relaterad ångest i studenterna.
Martin, Rebecca. "Sensitivity analysis of offshore wind farm availability and operations & maintenance costs subject to uncertain input factors." Thesis, University of Strathclyde, 2016. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27078.
Повний текст джерелаDande, Ketan Kiran. "Eco-Inspired Robustness Analysis of Linear Uncertain Systems Using Elemental Sensitivities." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1331104551.
Повний текст джерелаNash, Claire-Louise. "The mediational effect of self-regulatory capacity on the relationship between temperament, childhood invalidation and interpersonal functioning : testing a new neuro-regulatory model." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/3721.
Повний текст джерелаBarnsley, Megan Christina. "The social consequences of defensive physiological states." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/4062.
Повний текст джерелаHiebenthal, Claas [Verfasser]. "Sensitivity of A. islandica and M. edulis towards environmental changes : a threat to the bivalves ; an opportunity for palaeo-climatology? = Sensitivität von A. islandica und M. edulis gegenüber Umweltveränderungen / Claas Hiebenthal." Kiel : Universitätsbibliothek Kiel, 2009. http://d-nb.info/101986687X/34.
Повний текст джерелаAbu-Sheikh, Khalil. "Reviewing and Evaluating Techniques for Modeling and Analyzing Security Requirements." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-6203.
Повний текст джерелаGrill, Kalle. "Anti-paternalism." Licentiate thesis, KTH, Philosophy and History of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4065.
Повний текст джерелаThis is a thesis about anti-paternalism – the liberal doctrine that we may not interfere with a person’s liberty for her own good. Empirical circumstances and moral values may certainly give us reason to avoid benevolent interference. Anti-paternalism as a normative doctrine should, however, be rejected.
Essay I concerns the definitions of paternalism and anti-paternalism. It is argued that only a definition of paternalism in terms of compound reason-actions can accommodate its special moral properties. Definitions in terms of actions, common in the literature, cannot. It is argued, furthermore, that in specifying the reason-actions in further detail, the notion of what is self-regarding, as opposed to other-regarding, is irrelevant, contrary to received opinion.
Essay II starts out with the definition of paternalism defended in essay I and claims that however this very general definition is specified, anti-paternalism is unreasonable and should be rejected. Anti-paternalism is the position that certain reasons – referring one way or the other to the good of a person, give no valid normative support to certain actions – some kind of interferences with the same person. Since the reasons in question are normally quite legitimate and important reasons for action, a convincing argument for anti-paternalism must explain why they are invalid in cases of interference. A closer look at the reasons and actions in question provides no basis for such an explanation.
Essay III considers a concrete case of benevolent interference – the withholding of information concerning uncertain threats to public health in the public’s best interest. Such a policy has been suggested in relation to the European Commission’s proposed new system for the Registration, Evaluation, and Authorisation of Chemicals (REACH). Information about uncertain threats to health from chemicals would allegedly spread anxiety and depression and thus do more harm than good. The avoidance of negative health effects is accepted as a legitimate and good reason for withholding of information, thus respecting the conclusion of essay II, that anti-paternalism should be rejected. Other reasons, however, tip the balance in favour of making the information available. These reasons include the net effects on knowledge, psychological effects, effects on private decisions and effects on political decisions.
Pourasghar-Lafmejani, Masoud. "On the fault diagnosis of dynamic systems using set-based approaches." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/670997.
Повний текст джерелаLa detección y el aislamiento de fallos (DAF) basado en modelos es un problema teórico importante que se está convirtiendo cada vez m ás en una de las características clave para aumentar la seguridad y abilidad de los sistemas de control autom ático complejos. Básicamente, la DAF basada en modelos utiliza un modelo m atem ático para describir el comportamiento del sistem a. Sin embargo, la incertidumbre permanece siempre presente cuando se modela un sistema, ya que su efecto no es despreciable, incluso si no hay fallos que afecten al sistema. Una form a de tener en cuenta la incertidumbre es asumir una descripción desconocida pero acotada. En términos generales, la incertidumbre en los llamados enfoques basados en conjuntos se representa mediante un conjunto que es desconocido pero acotado en cada instante de tiempo. Los enfoques basados en conjuntos se pueden clasicar en tres paradigmas principales: enfoque basado en observadores intervalares, enfoque de pertenencia al conjunto y enfoque basados en conjuntos invariante. En esta tesis, la inuencia de la incertidumbre se aborda utilizando los enfoques basados en conjuntos y representaciones zonotópicas de los mismos. Adem ás, esta tesis presenta tanto el análisis como la comparación de los enfoques basados en conjuntos para la estimación de estado con el objetivo de establecer las ventajas y desventajas de cada enfoque, y también, para descubrir su relación en un m arco matemático formal. Sin embargo, los mencionados enfoques basados en conjuntos suponen implícitamente una incertidumbre variante en el tiempo. En el enfoque basado en pertenencia a conjuntos, la propagación del conjunto de estados se ve afectada por varios problemas, como el efecto de del aum ento de incertidumbre, la varianza temporal de los parámetros inciertos (o la dependencia temporal de los parámetros inciertos) y la evaluación de rango de una función de intervalo, especialm ente cundo se usa el "lnterval Hull" en cada iteración. Por lo tanto, se pueden obtener resultados conservadores (incluso para un sistema estable) en la simulación del sistema con incertidumbres param étricas invariantes en el tiempo con el uso del enfoque basado en pertenencia a conjuntos. Por otro lado, el conjunto de estados aproximados se puede calcular con base en un conjunto de trayectorias puntuales. Este tipo de enfoque se denomina enfoque basado en trayectorias. Por lo tanto, la dependencia temporal del parámetro incierto se conserva si el conjunto de trayectorias puntuales se genera utilizando el mencionado enfoque basado en trayectorias
La detecció i aïllament de fallades basada en models (DAF) és un problema teòric important que està esdevenint cada cop més una de les característiques clau per augmentar la seguretat i la fiabilitat dels sistemes de control automàtic complexos. Bàsicament, la DAF basada en models es basa en l’ús d'un model matemàtic per descriure el comportament del sistema. Tanmateix, la incertesa roman sempre present quan es modelitza un sistema ja que el seu efecte no és insignificant, fins i tot si no hi ha fallades en el procés. Una forma de fer front a la incertesa és assumir una descripció desconeguda però acotada. En termes generals, la incertesa en els anomenats enfocaments basats en conjunts està representada per un conjunt desconegut però acotat en cada instant. Els enfocaments basats en conjunts es poden classificar en tres paradigmes principals: l'enfocament d'observadors d'intervals, l'enfocament de pertinença a conjunts i l'enfocament d’invariància. En aquesta tesi, s'aborda la influència de la incertesa mitjançant els enfocaments basats en conjunts fent servir una representació zonotòpica. A més, aquesta tesi presenta tant l’anàlisi com la comparació dels enfocaments basats en conjunts per a l’estimació de l'estat i la seva aplicació a DAF amb l'objectiu d'establir els avantatges i desavantatges de cada enfocament i, a més, conèixer la seva relació en un marc matemàtic formal. Tanmateix, els esmentats enfocaments basats en conjunts assumeixen implícitament una incertesa variable en el temps. En l'enfocament basat en conjunts, la propagació del conjunt d'estats es veu afectada per diversos problemes com l'efecte d'embolcall, la variació temporal dels paràmetres incerts (o la dependència en el temps dels paràmetres incerts) i l’avaluació del rang d'una funció intervalar, especialment en el cas d'utilitzar el "Interval Hull" del conjunt a cada iteració. Per tant, es poden obtenir resultats conservadors i inestables (fins i tot per a un sistema estable) en la simulació del sistema amb incerteses temporals invariants paramètriques amb l’ús del mètode basat en conjunts. D'altra banda, el conjunt d'estats aproximat es pot calcular a partir d'un conjunt de trajectòries puntuals. Aquest tipus d'enfocament s'anomena enfocament basat en trajectòries. Per tant, la dependència en el temps del paràmetres es conserva si el conjunt de trajectòries puntuals es generen utilitzant l'enfocament basat en trajectòries esmentat. Aquesta tesi inclou sis parts. La primera part, presenta l'estat de la tècnica i fa una introducció de les eines de recerca. La segona part proposa la relació matemàtica entre l'observador intervalar i els enfocaments de pertinença. La tercera part se centra en la integració dels enfocaments basats en observadors i d’invariància de conjunts en la seva aplicació a DAF caracteritzant la mínima fallada detectable i aïllable. La quarta part presenta el disseny d'un observador intervalar que millora la sensibilitat a les fallades respecte les pertorbacions. La cinquena part proposa el disseny robust d'observadors d'intervals per a sistemes incerts, subjectes a incerteses tant temporals com variables es el temps. L'última part presenta algunes conclusions, resumeix la investigació realitzada i estableix les bases per al treball futur
Safadi, El Abed El. "Contribution à l'évaluation des risques liés au TMD (transport de matières dangereuses) en prenant en compte les incertitudes." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT059/document.
Повний текст джерелаWhen an accidental event is occurring, the process of technological risk assessment, in particular the one related to Dangerous Goods Transportation (DGT), allows assessing the level of potential risk of impacted areas in order to provide and quickly take prevention and protection actions (containment, evacuation ...). The objective is to reduce and control its effects on people and environment. The first issue of this work is to evaluate the risk level for areas subjected to dangerous goods transportation. The quantification of the intensity of the occurring events needed to do this evaluation is based on effect models (analytical or computer code). Regarding the problem of dispersion of toxic products, these models mainly contain inputs linked to different databases, like the exposure data and meteorological data. The second problematic is related to the uncertainties affecting some model inputs. To determine the geographical danger zone where the estimated risk level is not acceptable, it is necessary to identify and take in consideration the uncertainties on the inputs in aim to propagate them in the effect model and thus to have a reliable evaluation of the risk level. The first phase of this work is to evaluate and propagate the uncertainty on the gas concentration induced by uncertain model inputs during its evaluation by dispersion models. Two approaches are used to model and propagate the uncertainties. The first one is the set-membership approach based on interval calculus for analytical models. The second one is the probabilistic approach (Monte Carlo), which is more classical and used more frequently when the dispersion model is described by an analytic expression or is is defined by a computer code. The objective is to compare the two approaches to define their advantages and disadvantages in terms of precision and computation time to solve the proposed problem. To determine the danger zones, two dispersion models (Gaussian and SLAB) are used to evaluate the risk intensity in the contaminated area. The risk mapping is achieved by using two methods: a probabilistic method (Monte Carlo) which consists in solving an inverse problem on the effect model and a set-membership generic method that defines the problem as a constraint satisfaction problem (CSP) and to resolve it with an set-membership inversion method. The second phase consists in establishing a general methodology to realize the risk mapping and to improve performance in terms of computation time and precision. This methodology is based on three steps: - Firstly the analysis of the used effect model. - Secondly the proposal of a new method for the uncertainty propagationbased on a mix between the probabilistic and set-membership approaches that takes advantage of both approaches and that is suited to any type of spatial and static effect model. -Finally the realization of risk mapping by inversing the effect models. The sensitivity analysis present in the first step is typically addressed to probabilistic models. The validity of using Sobol indices for interval models is discussed and a new interval sensitivity indiceis proposed
Kang, Sonia K. "Stigma sensitivity and stereotype threat in older adults." 2006. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=450666&T=F.
Повний текст джерелаConchewski, Curtis. "Physical Security System Sensitivity to DBT Perturbations." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11753.
Повний текст джерелаLin, Ming-Hsiu, and 林銘修. "Design of Robust-Optimal Controllers with Low Trajectory Sensitivity for Uncertain TS Fuzzy Model Systems." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/45006014374701929544.
Повний текст джерела國立高雄應用科技大學
機械與精密工程研究所
99
In this thesis, a computational optimization approach which integrates robust stabilizability condition, orthogonal-function approach (OFA), Taguchi- sliding-based differential evolution algorithm (TSBDEA) or hybrid Taguchi-genetic algorithm (HTGA) is presented to design the robust-optimal fuzzy parallel-distributed -compensation (PDC) controller such that (i) the Takagi-Sugeno (TS) fuzzy model system with parametric uncertainties can be robustly stabilized , and (ii) a quadratic finite-horizon integral performance index including a quadratic trajectory sensitivity term for the nominal TS fuzzy model system can be directly minimized. In this thesis, the robust stabilizability condition is proposed in terms of linear matrix inequalities (LMIs). Base on the OFA, an algebraic algorithm only involving the algebraic computation for solving the nominal TS fuzzy feedback dynamic equations. By using the OFA and LMI-based robust stabilizaility condition, the robust-optimal fuzzy PDC control problem for the uncertain TS fuzzy dynamic systems are transformed into a static constrained-optimization problem represented by the algebraic equations with constraint of LMI-based robust stabilizaility condition; thus greatly simplifying the robust-optimal PDC control design problem. Then, for the static constrained -optimization problem, the TSBDEA or HTGA has been employed to find the robust-optimal PDC controllers with low trajectory sensitivity of the uncertain TS fuzzy model systems. Two design examples are given to demonstrate the applicability of the proposed new integrative approach.
LIU, CHAN-CHUAN, and 劉展銓. "Design of Robust-Optimal Static Output Feedback Controllers with Low Trajectory Sensitivity for Uncertain TS Fuzzy Systems Using Improved Differential Evolution Algorithm." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/kggvwm.
Повний текст джерела國立高雄應用科技大學
機械工程系
105
In this paper, an integrative method, which combines the robust stabilizability condition, the orthogonal-functions approach (OFA), and the Taguchi-sliding-based differential evolution algorithm (TSBDEA), is presented to design the robust-stable and quadratic-finite-horizon-optimal static output feedback parallel-distributed- compensation (PDC) controller with low trajectory sensitivity such that (i) the Takagi-Sugeno (TS) fuzzy control system with elemental parametric uncertainties can be robustly stabilized, and (ii) a quadratic finite-time integral performance index including a quadratic sensitivity term for nominal TS fuzzy control system can be minimized. The robust stabilizability condition is proposed in terms of linear matrix inequalities (LMIs). By using the OFA and the robust stabilizability condition, the robust-stable and quadratic-finite-horizon-optimal static output feedback PDC control problem for the TS fuzzy dynamic systems is transformed into a static constrained-optimization problem represented by the algebraic equations with constraint of LMI-based robust stabilizability condition; thus greatly simplifying the optimal static output feedback PDC controller design problem. Then, for the static constrained-optimization problem, the TSBDEA is applied to find the robust-stable and quadratic-finite-horizon-optimal static output feedback PDC controllers with low trajectory sensitivity of the TS fuzzy control systems with elemental parametric uncertainties. A design example of robust-stable and quadratic-finite-horizon-optimal static output feedback PDC controllers with low trajectory sensitivity for uncertain nonlinear Chua circuit is given to demonstrate the applicability of the proposed integrative approach.
McCanna, David. "Development of Sensitive In Vitro Assays to Assess the Ocular Toxicity Potential of Chemicals and Ophthalmic Products." Thesis, 2009. http://hdl.handle.net/10012/4338.
Повний текст джерела