Dissertations / Theses on the topic 'Risk representation'
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Drapeau, Samuel. "Risk preferences and their robust representation." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2010. http://dx.doi.org/10.18452/16135.
Full textThe goal of this thesis is the conceptual study of risk and its quantification via robust representations. We concentrate in a first part on context invariant features related to this notion: diversification and monotonicity. We introduce and study the general properties of three key concepts, risk order, risk measure and risk acceptance family and their one-to-one relations. Our main result is a uniquely characterized dual robust representation of lower semicontinuous risk orders on topological vector space. We also provide automatic continuity and robust representation results on specific convex sets. This approach allows multiple interpretation of risk depending on the setting: model risk in the case of random variables, distributional risk in the case of lotteries, discounting risk in the case of consumption streams... Various explicit computations in those different settings are then treated (economic index of riskiness, certainty equivalent, VaR on lotteries, variational preferences...). In the second part, we consider preferences which might require additional information in order to be expressed. We provide a mathematical framework for this idea in terms of preorders, called conditional preference orders, which are locally compatible with the available information. This allows us to construct conditional numerical representations of conditional preferences. We obtain a conditional version of the von Neumann and Morgenstern representation for measurable stochastic kernels and extend then to a conditional version of the variational preferences. We finally clarify the interplay between model risk and distributional risk on the axiomatic level.
Ghose, Rana Janak. "Regulating GMOs in India : pragmatism, politics, representation, and risk." Thesis, University of Sussex, 2011. http://sro.sussex.ac.uk/id/eprint/7579/.
Full textWaldron, Cherry-Ann. "Cardiovascular risk prediction : how useful are web-based tools and do risk representation formats matter?" Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/55126/.
Full textPolley, Jason S. "Acts of justice : risk and representation in contemporary American fiction." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102824.
Full textThis dissertation inspects how Jonathan Franzen, Don DeLillo, and Jane Smiley present the inconsistencies of the law. These American novelists emplot global escapes into their work as a means to inform notions of liberty and jurisprudence. For these writers, freedom requires the recognition of contradictory---and unanticipated---narratives. "Justice Theory" emerges where media, gambling, performance, and suburban studies intersect with ethics, globalism, and narratology. In Franzen's novel The Corrections and essay collection How to Be Alone, self-validation requires the appreciation of the stories of others. In DeLillo's later works, particularly the plays The Day Room and Valparaiso, justice materializes in terms of isolation and the will to alter personal stories. For Smiley, as construed in her long novels The Greenlanders and Horse Heaven, dynamic responsive actions attend risky, unpredictable encounters in competitive milieus like the racetrack. These authors reveal that executions of justice and the perpetration of injustice involve varied consequences. The law is not only about punishment and recompense. Rather, legality directs the consequences of its applications toward the ideal of justice, which evolves alongside the subjects that it serves and the stories that they relate.
Morrier, Michael Joseph. "Disproportionate Representation of Preschool-Aged Children with Disabilities." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/epse_diss/48.
Full textGhassemi, Marzyeh. "Representation learning in multi-dimensional clinical timeseries for risk and event prediction." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112389.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 99-108).
There are major practical and technical barriers to understanding human health, and therefore a need for methods that thrive on large, complex, noisy data. In this work, we present machine learning methods that distill large amounts of heterogeneous health data into latent state representations. These representations are then used to estimate risks of poor outcomes, and response to intervention in multivariate physiological signals. We evaluate the reduced latent representations by 1) establishing their predictive value in important clinical tasks and 2) showing that the latent space representations themselves provide useful insight into underlying systems. In particular, we focus on case studies that can provide evidence-based risk assessment and forecasting in settings with guidelines that have not traditionally been data-driven. In this thesis we evaluate several methods to create patient representations, and use these features to predict important outcomes. Representation learning can be thought of as a form of phenotype discovery, where we attempt to discover spaces in the new representation that are markers of important events. We argue that these latent representations are useful markers when they 1) create better prediction results on outcomes of interest, and 2) do not duplicate features that are currently known bio-markers. We present four case studies of learning representations, and evaluate the representations on real predictive tasks. First, we create forward-facing prediction models using baseline clinical features, and those from a Latent Dirichlet Allocation (LDA) model trained with clinical progress notes. We then evaluate the per-patient latent state membership to predict mortality in an intensive care setting as time moves forward. Second, we use non-parametric Multi-task Gaussian Process (MTGP) hyper-parameters as latent features to estimate correlations within and between signals in sparse, heterogeneous time series data. We evaluate the hyper-parameters for forecasting missing signals in traumatic brain injury patients, and predicting mortality in intensive care unit patients. Third, we train switching-state autoregressive models (SSAMs) to model the underlying states that emit patient vital signs over time. We evaluate the time-specific latent state distributions as features to predict vasopressor onset and weaning in intensive care unit patients. Finally, we use statistical and symbolic features extracted from wearable ambulatory accelerometers (ACC) mounted to the neck to classify patient pathology, and stratify patients' risk of voice misuse. We evaluate the utility of both statistically generated features and symbolic representations of glottal pulses towards patient classification.
by Marzyeh Ghassemi.
Ph. D.
Aaron, Michele Suzanne. "Un/safe texts : 'madmen', masochists and the representation of self-endangerment." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323788.
Full textChattopadhyay, Jacqueline. "Representation and Household Risk Exposure: Attention to Access and Quality in Domestic Policy." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10196.
Full textLu, Danni. "Representation Learning Based Causal Inference in Observational Studies." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/102426.
Full textDoctor of Philosophy
Reasoning cause and effect is the innate ability of a human. While the drive to understand cause and effect is instinct, the rigorous reasoning process is usually trained through the observation of countless trials and failures. In this dissertation, we embark on a journey to explore various principles and novel statistical approaches for causal inference in observational studies. Throughout the dissertation, we focus on the causal effect estimation which answers questions like ``what if" and ``what could have happened". The causal effect of a treatment is measured by comparing the outcomes corresponding to different treatment levels of the same unit, e.g. ``what if the unit is treated instead of not treated?". The challenge lies in the fact that i) a unit only receives one treatment at a time and therefore it is impossible to directly compare outcomes of different treatment levels; ii) comparing the outcomes across different units may involve bias due to confounding as the treatment assignment potentially follows a systematic mechanism. Therefore, deconfounding constructs the main hurdle in estimating causal effects. This dissertation presents two parallel principles of deconfounding: i) balancing, i.e., comparing difference under similar conditions; ii) contrasting, i.e., extracting invariance under heterogeneous conditions. Chapter 2 and Chapter 3 explore causal effect through balancing, with the former systematically reviews a classical propensity score weighting approach in a conventional data setting and the latter presents a novel generative Bayesian framework named Balancing Variational Neural Inference of Causal Effects(BV-NICE) for high-dimensional, complex, and noisy observational data. It incorporates the advance deep learning techniques of representation learning, adversarial learning, and variational inference. The robustness and effectiveness of the proposed framework are demonstrated through an extensive set of experiments. Chapter 4 extracts causal effect through contrasting, emphasizing that ascertaining stability is the key of causality. A novel causal effect estimating procedure called Risk Invariant Causal Estimation(RICE) is proposed that leverages the observed data disparities to enable the identification of stable causal effects. The improved generalizability of RICE is demonstrated through synthetic data with different structures, compared with state-of-art models. In summary, this dissertation presents a flexible causal inference framework that acknowledges the data uncertainties and heterogeneities. By promoting two different aspects of causal principles and integrating advance deep learning techniques, the proposed framework shows improved balance for complex covariate interactions, enhanced robustness for unobservable latent confounders, and better generalizability for novel populations.
Demers, Jean-Simon. "Racing Heroes and Grieving Widows: A Study of the Representation of Death in Motorsport." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/38195.
Full textFausset, Cara Bailey. "Comprehension of health risk probabilities: the roles of age, numeracy, format, and mental representation." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44832.
Full textGerbais, Juliette. "Women Representation in Disaster Risk Reduction : A Critical Discourse Analysis of the UNDRR Frameworks." Thesis, Malmö universitet, Malmö högskola, Institutionen för globala politiska studier (GPS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-18446.
Full textvan, Pelt Nadia. "Play-making on the edge of reality : managing spectator risk in early English drama." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/366616/.
Full textJane, Robert. "Improving the representation of the fragility of coastal structures." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/13080.
Full textShanmugam, Divy. "A tale of two time series methods : representation learning for improved distance and risk metrics." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119575.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 43-49).
In this thesis, we present methods in representation learning for time series in two areas: metric learning and risk stratification. We focus on metric learning due to the importance of computing distances between examples in learning algorithms and present Jiffy, a simple and scalable distance metric learning method for multivariate time series. Our approach is to reframe the task as a representation learning problem -- rather than design an elaborate distance function, we use a CNN to learn an embedding such that the Euclidean distance is effective. Experiments on a diverse set of multivariate time series datasets show that our approach consistently outperforms existing methods. We then focus on risk stratification because of its clinical importance in identifying patients at high risk for an adverse outcome. We use segments of a patient's ECG signal to predict that patient's risk of cardiovascular death within 90 days. In contrast to other work, we work directly with the raw ECG signal to learn a representation with predictive power. Our method produces a risk metric for cardiovascular death with state-of-the-art performance when compared to methods that rely on expert-designed representations.
by Divya Shanmugam.
M. Eng.
Wiebe, Vaneesa Joy. "Parenting style and self-other representation in high risk adolescents, the moderating role of attachment patterns." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0023/MQ51506.pdf.
Full textChui, Lawrence. "An Experimental Examination of the Effects of Fraud Specialist and Audit Mindsets on Fraud Risk Assessments and on the Development of Fraud-Related Problem Representations." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc30447/.
Full textGRIZENDI, LUCIMAR THEREZINHA. "RESIDENCE AND RISK CONDITIONS: SOCIAL REPRESENTATION OF TECHNICIAN AND RESIDENTS FROM THE OUTSKIRTS OF JUIZ DE FORA." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=4109@1.
Full textO objetivo central é identificar as representações que moradores da periferia de Juiz de Fora em condições de risco e de vulnerabilidade e, técnicos do Departamento de Defesa Civil do Município, vêm construindo sobre risco e vulnerabilidade, tentando apreender como essas representações circulam entre os dois grupos. Parte-se da observação empírica que há construções e práticas diferentes: os moradores não seguem as orientações dos técnicos na prevenção de calamidades e na preservação da vida. Fatores como a desigualdade social e a não efetividade das políticas sociais, dentre elas a política de habitação, agravam ainda mais as condições de risco e de vulnerabilidade em que vivem amplos segmentos da população e, a Defesa Civil aparece como política emergencial residual destinada a atender a essa população. Adotou-se a perspectiva das representações sociais, e, a abordagem qualitativa para a escuta dos sujeitos, através de entrevistas semi-estruturadas. Os resultados indicam, a partir do confronto dos discursos, que as representações do risco vêm sendo construídas num processo dialético de afirmação e negação do fenômeno. Aspectos valorativos interferem nessa construção. Para os técnicos, sair do risco é garantir a vida e, para a população, a vulnerabilidade, ou seja, a necessidade de sobrevivência se sobrepõe à existência do risco.
The main objective of this study is to identify the representations that the residents of the outskirts of Juiz de Fora living in vulnerable and risk conditions and, technician of the Civil Defense Municipality Department, have been constructing about risk and vulnerability, trying to grasp how such representations constitute themselves between these two groups. According to empirical observations there are diferent representations and practices: the residents dont follow or obey the orientations given by the technicians on how to prevent calamities and how to preserve life. Factors like social inequality and the no effectiviness of social politics, among them the housing politic, makes the risk condition and vulnerability even worse for a large segment of the population and, the Civil Defense appears as a emergency politic adressed to serve this population. It has been adopted the perspective of social representations, and, the qualitative listening approach of the individuals, through semi-structured interviews. With the confrontation of the speeches, the results indicate, that the risk representation has been constructed in a dialect of affirmation of the phenomenon and refusal of it. Valuable aspects intervene in this construction. For the techinicians, to step out of the risk is to guarantee life and, for the population , the vulnerability, in other words, the necessity for survivel overlays the existence of the risk.
Parenteau, Marie-Pierre. "Air Pollution and Health: Toward Improving the Spatial Definition of Exposure, Susceptibility and Risk." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19928.
Full textJadidi, Mardkheh Amaneh. "Towards development of fuzzy spatial datacubes : fundamental concepts with example for multidimensional coastal erosion risk assessment and representation." Doctoral thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25589.
Full textCurrent Geospatial Business Intelligence (GeoBI) systems typically do not take into account the uncertainty related to vagueness and fuzziness of objects; they assume that the objects have well-defined and exact semantics, geometry, and temporality. Representation of fuzzy zones by polygons with well-defined boundaries is an example of such approximation. This thesis uses an application in Coastal Erosion Risk Analysis (CERA) to illustrate the problems. CERA polygons are created using aggregations of a set of spatial units defined by either the stakeholders’ interests or national census divisions. Despite spatiotemporal variation of the multiple criteria involved in estimating the extent of coastal erosion risk, each polygon typically has a unique value of risk attributed homogeneously across its spatial extent. In reality, risk value changes gradually within polygons and when going from one polygon to another. Therefore, the transition from one zone to another is not properly represented with crisp object models. The main objective of the present thesis is to develop a new approach combining GeoBI paradigm and fuzzy concept to consider the presence of the spatial uncertainty in the representation of risk zones. Ultimately, we assume this should improve coastal erosion risk assessment. To do so, a comprehensive GeoBI-based conceptual framework is developed with an application for Coastal Erosion Risk Assessment (CERA). Then, a fuzzy-based risk representation approach is developed to handle the inherent spatial uncertainty related to vagueness and fuzziness of objects. Fuzzy membership functions are defined by an expert-based vulnerability index. Instead of determining well-defined boundaries between risk zones, the proposed approach permits a smooth transition from one zone to another. The membership values of multiple indicators (e.g. slop and elevation of region under study, infrastructures, houses, hydrology network and so on) are then aggregated based on risk formula and Fuzzy IF-THEN rules to represent risk zones. Also, the key elements of a fuzzy spatial datacube are formally defined by combining fuzzy set theory and GeoBI paradigm. In this regard, some operators of fuzzy spatial aggregation are also formally defined. The main contribution of this study is combining fuzzy set theory and GeoBI. This makes spatial knowledge discovery more understandable with human reasoning and perception. Hence, an analytical conceptual framework was proposed based on GeoBI paradigm to develop a fuzzy spatial datacube within Spatial Online Analytical Processing (SOLAP) to assess coastal erosion risk. This necessitates developing a framework to design a conceptual model based on risk parameters, implementing fuzzy spatial objects in a spatial multi-dimensional database, and aggregating fuzzy spatial objects to deal with multi-scale representation of risk zones. To validate the proposed approach, it is applied to Perce region (Eastern Quebec, Canada) as a case study.
Casey, Maxine Austin. "Proportional Representation of Students with Disabilities Based on Race, Gender, and Socio-Economic Status in Virginia." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/85469.
Full textEd. D.
Estrada, Díaz Gabriela. "Mise en pratique de la politique de prévention de catastrophes au Mexique : Enjeux en milieu urbain : Le cas de la ville de Minatitlán." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1076/document.
Full textThis dissertation explores the responses developed by the Mexican government for tackling the challenges presented by natural and man-made risks. The country counts indeed with a number of strategies for managing emergencies, and it performs quite well on reconstructing infrastructures and facilities on the aftermath of the numerous natural disasters that afflict its territory every year. This is possible thanks to the financial means available for reconstruction in the national annual budget. However, the recurrence of natural and man-made disasters, indicate a lack of planning policies and practices that could actually prevent that the existing risks become real disasters, specially in urban areas.The case of study is the city of Minatitlán. This city offers an example of how the disaster prevention policy lacks effectiveness on reducing major risks. In Minatitlán, nature is harsh and inflicts recurring floods in its territory, but human groups have certainly some responsibility in the repetition of disasters since they choose a location rather inadequate for urbanization, and implemented low-resilient development patterns. When oil industry established in the area, it reinforced the characteristics of urbanization (illegal settlements) and contributed to weaken the resistance of the settlement to disasters.At the heart of this study lays an interrogation about the operational conditions of a national disaster prevention policy in Mexico, given the local conditions that intervene in its effectiveness: geographical, socio-economical, institutional and socio-cultural frames. Therefore, the study focuses on a global comprehension of urban systems and how different elements relate to produce a specific condition of vulnerability, taking into account the multi-dimensionality of the concept.The study is presented in three parts. The first one explores the theoretical framework of the following analysis. In the second part, a couple of analysis relied on the use of public information rather accessible in Mexico. The data and texts were used with a laying interrogation about the indications they could give about the risk situations in Mexican urban settlements. Finally, the third part of the dissertation focuses on exploring the socio-cultural factors of vulnerability, namely the social representation of risk, under the premise that it has a major impact on individual and social behavior in risk (and disasters) situations.The case of Minatitlán confirms the tight links among risks and urban development. In this city, the risk has historically represented an opportunity for development. The institutional framework for risk prevention emerges well after the city was a consolidated urban settlement, but it has not been able to offer substantial changes and one can conclude that the current situation arranges a number of groups that do not see any incentive for improving the prevention strategies or enforcing planning measures. Then, a transition towards more resilient scenarios, specially in a context of climate change, is not foreseeable in the coming years.Moreover, the civil protection policy in Mexico favors a top-down public intervention in disaster periods, where each government level intervenes up to their financial and physical powers. At the lowest end of this chain, are local populations, the victims of disasters, are not encouraged to participate or become actual actors of local prevention.This being the current state of affairs in Minatitlán, the public action as well as the social representation of risks and disasters, are both contributing to maintaining a situation where prevention is not the main goal of the disaster policy
Alfredsson, Therese, and Amanda Erlandsson. ""VIKTIG INFORMATION TILL SVERIGES INVÅNARE" -En kvalitativ innehållsanalys av Myndigheten för samhällsskydd och beredskaps broschyr "Om krisen eller kriget kommer"." Thesis, Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-71918.
Full textSmith, Jennifer Yvette. "Proportional Representation of Students with Disabilities based on Race, Gender and Socio-Economic Status in Virginia 2008-2009 and 2013-2014: Has it changed?" Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/98533.
Full textEDD
LIBRACE, GIOVANNI. "La gestione dei rischi d'impresa nelle operazioni di finanza straordinaria." Doctoral thesis, Università Cattolica del Sacro Cuore, 2008. http://hdl.handle.net/10280/268.
Full textThis thesis outlines the importance that risk management is getting in the life of organizations. Stakeholders, ranging from employees to investors, must understand how to quantify the tradeoffs of risk against the potential return, because the failure to identify and manage the essential nature of risk can have consequences on the possibility for an organization to achieve its objectives. After introducing the concept of risk, it is analyzed the Enterprise Risk Management (ERM) approach and the benefits for companies that decide to adopt it. In particular there is a focus on its importance in some circumstances in the life of an organization and it is shown how evaluation of risk profile and responses can be critical in mergers and acquisitions, public offer of securities and other corporate finance decisions. Due diligence process and, in particular, risk management and insurance due diligence is described as an effective instrument to understand to what risks a company is exposed to and how it manages them. In conclusion, some transaction solutions (i.e. representations & warranties insurance, public offering of securities insurance, environmental solutions) - that can be used to mitigate the company risk profile, transferring some risks to specialized insurance markets - are illustrated.
LIBRACE, GIOVANNI. "La gestione dei rischi d'impresa nelle operazioni di finanza straordinaria." Doctoral thesis, Università Cattolica del Sacro Cuore, 2008. http://hdl.handle.net/10280/268.
Full textThis thesis outlines the importance that risk management is getting in the life of organizations. Stakeholders, ranging from employees to investors, must understand how to quantify the tradeoffs of risk against the potential return, because the failure to identify and manage the essential nature of risk can have consequences on the possibility for an organization to achieve its objectives. After introducing the concept of risk, it is analyzed the Enterprise Risk Management (ERM) approach and the benefits for companies that decide to adopt it. In particular there is a focus on its importance in some circumstances in the life of an organization and it is shown how evaluation of risk profile and responses can be critical in mergers and acquisitions, public offer of securities and other corporate finance decisions. Due diligence process and, in particular, risk management and insurance due diligence is described as an effective instrument to understand to what risks a company is exposed to and how it manages them. In conclusion, some transaction solutions (i.e. representations & warranties insurance, public offering of securities insurance, environmental solutions) - that can be used to mitigate the company risk profile, transferring some risks to specialized insurance markets - are illustrated.
Schallier, Phillipe. "Designing a safety management support system using open architecture databases: the requirements of information representation in the support of managers' risk-related decision-making." Thesis, Aston University, 2000. http://publications.aston.ac.uk/11765/.
Full textPERI, ILARIA. "Quasi-convex risk measures and acceptability indices. Theory and applications." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/29745.
Full textVæver, Kronborg Katja. "The Stockholm Terror Attack 2017 : How Domestic and International Online News Media Framed the Act and Empowered Involved Actors." Thesis, Högskolan för lärande och kommunikation, Högskolan i Jönköping, HLK, Medie- och kommunikationsvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40859.
Full textJohnson, David G. "Representations of uncertainty in risk analysis." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/31941.
Full textLeite, Vanusa Claudete Anastácio Usier. "INFECÇÕES NO MEIO AMBIENTE HOSPITALAR: REPRESENTAÇÕES SOCIAIS DE PROFISSIONAIS COM ATUAÇÃO EM UNIDADE DE TERAPIA INTENSIVA - GOIÂNIA GO." Pontifícia Universidade Católica de Goiás, 2009. http://localhost:8080/tede/handle/tede/3093.
Full textNosocomial infection is a problem found all over the world, being responsible for the increase of morbidity and mortality worldwide. The objective of this study is: to know the social representation (SR) of the nosocomial infection (NI) for nurses and physician who work in the intensive care unit (ICU), aiming to discover the aspects that are probably related to the adoption or not of preventive conducts against nosocomial infection. This is a transversal study carried out in hospitals of Goiania city in the years of 2007 and 2008. A hundred nurses and physicians that worked in ICU participated in the study. It was executed in two stages. In the first one, an instrument with three questions that had different approaches to the theme was elaborated: the first question evokes specifically the theme of nosocomial infection; the second is to identify the five main risk factors related to nosocomial infection found in ICU; based on the answers emitted by the concerning subjects of the second question, it was solicited in the third question that the subjects explained why they considered the two first answers, of question number two, as an important risk factor for NI. The answers to the first questioning were processed in the EVOC software, after the construction of a data base, preparation of which was preceded by the organization of the dictionary containing words brought forward by the subjects. The answers to the second and the third questions were categorized according to groups in which the significance of frequency resembled. After this stage, with the intent of verifying the centrality of the elements identified in the first stage of the study, a second instrument was built from the subjects' speech regarding the main risks of NI in ICU. This instrument consists of two questions: the first is in the form of the Likert School; and the second made with nine items and three alternatives. A table was built at the end of this stage containing the frequency of the variables. After the creation of a dada bank using the Excel software, for the first question the dada were transferred to the SPSS Version 16 software and for the second question a graphic of lines was created. Results: the words hand washing (46%), gravity / immunosuppression (43%), multiresistante bacteria (29%) and invasive procedures (18%) appeared in the evoking question, which are central in the representation. The majority of the professionals that participated in the study pointed out the hand washing (42%), immunodepression / gravity of the case (41%) and the existence of a multiresistante microorganism (39%) as the main risk factors for NI. Conclusion: In this context, the structural study of the social representation of nosocomial infection allows us to formulate a hypothesis where the subjects elaborated a evaluative type of thinking that show some risk factors that don t annul themselves completely by washing the hands, in spite of the fact that the subjects adopted the belief in which the hygienic cleaning of the hands is a determining factor of prevention.
As infecções hospitalares são problemas encontrados em todo o mundo, sendo responsáveis pelo aumento da morbidade e mortalidade. Este estudo tem por objetivo: conhecer a representação social (RS) de infecção hospitalar, para enfermeiros e médicos que trabalham em UTI, buscando identificar os aspectos provavelmente relacionados à adoção ou não de condutas preventivas contra a infecção hospitalar. Trata-se de um estudo transversal realizado em hospitais da cidade de Goiânia no ano de 2007 a 2008. Participaram do estudo 100 (cem) enfermeiros e médicos que trabalham em UTI. O estudo foi realizado em duas etapas. Na primeira, foi elaborado um instrumento com três perguntas com abordagens diferentes ao tema: a primeira com questão de evocação ao tema Infecção Hospitalar (IH), especificamente. A segunda para identificar os cinco principais fatores de risco relacionados com infecção hospitalar encontrados em UTI. Com base nas respostas emitidas pelos sujeitos referentes à segunda questão, foi solicitado, na terceira questão, que os sujeitos explicassem por que consideravam as duas primeiras respostas, da questão de número dois, como um importante fator de risco para IH. As respostas ao primeiro questionamento foram processadas no software EVOC, após a construção do banco de dados, cuja preparação foi precedida da organização do dicionário contendo palavras produzidas pelo sujeito. As respostas a segunda e a terceira questão foram categorizadas conforme grupos de semelhança de seu significado de freqüência. Após essa etapa, com intuito de verificação da centralidade de elementos identificados na primeira fase do estudo, um segundo instrumento foi construído a partir das falas dos sujeitos acerca dos principais fatores de risco para IH em UTI. Esse instrumento constou de duas questões: a primeira na forma de Escala de likert, a segunda foi feita com nove itens e três alternativas. Ao término dessa etapa foi construída uma tabela contendo as freqüências das variáveis, após a criação de um banco de dados utilizando o programa de software Excel, onde os dados foram transferidos para o programa do software SPSS Versão 16, para a primeira questão e criação de gráfico de linha , para a questão de caracterização. Resultados: na questão de evocação aparecem as palavras lavagem das mãos (46%), gravidade / imunosupressão (43%), bactérias multiresistentes (29%) e procedimentos invasivos (18%), as quais são centrais na representação. A maioria dos profissionais que participaram do estudo apontou a lavagem das mãos (42%), imunodepressão / gravidade do caso (41%) e a existência de microrganismos multiresistentes (39%) como os principais fatores relacionados ao fator de risco para IH. Conclusão: Nesse contexto, o estudo estrutural das RS de IH nos permite formular a hipótese que, apesar dos sujeitos adotarem a crença da higienização das mãos como fator determinante de prevenção, os sujeitos elaboram um raciocínio do tipo avaliativo que apontam alguns fatores de risco que não se anulam completamente pela lavagem das mãos.
Santiago, Romero Carol Jimena, and Requena Fiorella Thalia Tataje. "Conductas de riesgo y representación de estilos de apego en adolescentes de un colegio limeño." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653195.
Full textThe purpose of this work was to correlate risk behaviors with the representative attachment styles among adolescents in a school in Lima. Participants were 177 adolescents ranging in age from 12 to 17 years. Two instruments were used to measure the variables: the CaMir-R (Valenzuela, 2014) and the CARE (Fromme, Katz & Rivet, 1997). The results showed that there is an inverse, low and significant correlation between Safety: Availability and attachment figure supports with Aggressive behaviors (r = -.189, p < .05), Irresponsible academic behaviors (r = -.199, p < .05) and Risky Sexual Behaviors (r = -.149, p < .05). On the other hand, there were significant, direct and low correlation between the factors.
Tesis
Zare, mahmoudabadi Mohsen. "Shared representation of work-related musculoskeletal risk factors and comparison of assessment methods : an experimental study in the truck manufacturing industry Evaluation of Ergonomic Approach and Musculoskeletal Disorders in Two Different Organizations in a Truck Assembly Plant A comparison of neck bending and flexion measurement methods for assessment of risk." Thesis, Angers, 2015. http://www.theses.fr/2015ANGE0075.
Full textMusculoskeletal risk factors such as physical, organizational and psychosocial factors are a common challenge for the automotive assembly industries and result in adverse human and system effects. Ergonomics has already been integrated inthe production systems of such factories to eliminate work related musculoskeletal disorders (WR-MSDs). The issue is whether the current ergonomic approach of car industries, based on corporate standards and observational methods, can provide a shared knowledge of ergonomic factors for various stakeholders and facilitate ergonomic improvement. This study focuses on the positioning of the different assessment methods (used by various stakeholders), agreement between their results in evaluation of physical risk factors and the influence of intervention and improvement following ergonomic assessment. This thesis proposes that the current procedure of risk factor assessment can not provide ashared knowledge and representation of risks between stakeholders in manufacturing industries. It was found that the operators’ assessments of risk factors (self-reported questionnaire) were significantly different from those assessed by observational methods (ergonomist) and direct measurement. However, the operators’ opinions and judgments of ergonomic factors of a job are of particular importance to the success of an ergonomic approach. A structured interview based on objective data (video-observation or direct measurement) linked the activities and strategies of atrisk operators might be an appropriate procedure to advance ergonomics.The knowledge gained from this study emphasizes that the variable nature of tasks in manufacturing industries needs an ergonomic approach which shares knowledge and representation of risks between stakeholders. In such an approach, attitudes and behaviors of operators are taken into consideration in developing new intervention processes, organizational and technical remedies. Moreover, involvement of stakeholders should be integrated and this should result in improving production ergonomics
Weinstein, Philip. "Changing representations of mosquito borne disease risk in Reunion." University of Western Australia. European Languages and Studies Discipline Group. French Studies, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0174.
Full textPesce, Maria da Conceição Rocha. "Representações sociais de professores sobre alunos considerados em situação de risco." Pontifícia Universidade Católica de São Paulo, 2013. https://tede2.pucsp.br/handle/handle/16108.
Full textConselho Nacional de Desenvolvimento Científico e Tecnológico
The present work started from questionings concerning the lack of material investment and psychosocial attention for the development of children and young people that live in the most peripheral regions of São Paulo City and are designated by the society as risk population. As a result from this lack, we are faced with children and young people who have attended school and are living or working on the streets of the metropolis, in search for better living conditions. Understanding the school as a center of transformation, it was verified that the question of risk or social problems experienced by students has been poorly received in school literature, because mostly, the school heads for the learning problems issue. Considering that the teacher student relationship and communication are fundamental for the education process, this research investigated what view do teachers of the final years of an elementary school have about the future of their students considered in risk situation. The final years of elementary school were chosen for their specific departure of childhood and entrance in youth. The Master s thesis was developed within the psychosocial perspective, guided by the Theory of Social Representation, assuming that social representations are culturally and historically constructed, and that they influence the way we see and deal with everyday. The methodology included interviews with teachers, which were recorded, transcribed and processed by the program ALCESTE. The results indicated the inappropriate behavior of the students, a dysfunctional family and social context of poverty as elements of the social representation risk situation. The teacher aims at risk situation from the naturalized vision of family. As reality shows other models, he feels limited. Through this research, it is expected that the identified elements enable a shift from the deterministic view of school as a place of reproduction of inequalities, for the school as a place for social transformation
O presente trabalho partiu de questionamentos acerca da falta de investimento material e de atenção psicossocial para o desenvolvimento de crianças e jovens que vivem nas regiões mais periféricas da cidade de São Paulo e que são designados pela sociedade como população de risco. Como resultado dessa falta, nos deparamos com crianças e jovens que já frequentaram a escola e estão vivendo ou trabalhando nas ruas da metrópole, em busca de melhores condições de vida. Compreendendo a escola como polo de transformação, verificou-se que a questão do risco ou problemas sociais vivenciados pelos alunos tem sido pouco acolhida na literatura escolar, pois, majoritariamente, a escola se volta para a discussão de problemas de aprendizagem. Considerando que a relação e a comunicação professor-aluno são fundamentais para o processo de educação, a presente pesquisa investigou qual a visão que professores dos anos finais de uma escola do Ensino Fundamental têm a respeito do futuro de seus alunos considerados em situação de risco. Os anos finais do Ensino Fundamental foram escolhidos por suas especificidades de saída da infância e de entrada na juventude. A dissertação de Mestrado foi desenvolvida dentro da perspectiva psicossocial, à luz da Teoria das Representações Sociais, partindo do pressuposto de que as representações sociais são culturalmente e historicamente construídas, e influenciam a forma de ver e lidar com o cotidiano. A metodologia contou com entrevistas com professores, que foram gravadas, transcritas e processadas pelo programa ALCESTE. Os resultados indicaram o comportamento inadequado do aluno, a família desestruturada e o contexto social de pobreza como elementos da representação social situação de risco. O professor objetiva a situação de risco na visão naturalizada de família, como a realidade apresenta outros modelos, ele se sente limitado. Com esta pesquisa, espera-se que os elementos identificados possibilitem uma mudança da visão determinista de escola como espaço de reprodução de desigualdades, para a escola como espaço de transformação social
Kabui, Ali. "Value at risk et expected shortfall pour des données faiblement dépendantes : estimations non-paramétriques et théorèmes de convergences." Phd thesis, Université du Maine, 2012. http://tel.archives-ouvertes.fr/tel-00743159.
Full textSchlag, Anne Katrin. "Expert and lay representations of GM food : implications for risk communication." Thesis, London School of Economics and Political Science (University of London), 2007. http://etheses.lse.ac.uk/1946/.
Full textBorger, David. "Constructing representations of risk in regulatory networks : accounting for financial instruments." Thesis, London School of Economics and Political Science (University of London), 2002. http://etheses.lse.ac.uk/2265/.
Full textPrécigout, Frédéric. "Les formes de peurs émergeant dans l'alimentation des sociétés occidentales contemporaines : analyse, déconstruction et reconstruction de discours et pratiques des acteurs de la filière du manger." Thesis, Tours, 2011. http://www.theses.fr/2011TOUR2005/document.
Full textWhile today the sanitary security of food is largely secured, we examine the reasons why food fears occupy such an important place in discourses by ordinary eaters, food industry professionals as well as experts. We attempt here to analyze such fear-related discourses so as to determine grounds and justifications. We defend the hypothesis that such fears should be considered as social metaphors - food revealing the expression and crystallisation of the diverse protagonists’ identity crisis.In a comprehensive perspective, we reconstruct life stories focusing on food fears then we confront them; finally we articulate them with the social and historical context they are stemming from. By deconstructing discourses, we reconstruct the intrinsic logic of such fears
Lemoine, Jérémy. "Jeu de hasard : prise de risque, représentation sociale et addiction." Thesis, Reims, 2014. http://www.theses.fr/2014REIML005.
Full textDecision-making, as well as addiction, are influence by a combination of three sets of factors: the situation, the object and individual differences (Appelt, Milch, Handgraaf, & Weber, 2011; Bonnaire, 2009; Einhorn, 1970; Griffiths, 2003). Each of these factors corresponds to a chapter of this thesis. In Chapter 1, the influence of the situation is investigated through the effect of Social Context. The influence of the Social Context is studied through, the Mere Presence of an Audience and through the presence of a Competitive Climate. In Chapter 2, the influence of the object is investigated through the effect of the knowledge of the object: risk-taking behavior is studied when participants are confronted to a known game and when they are confronted to an unknown game. In Chapter 3, the influence of individual differences is investigated through the effect of Self-Esteem on risk-taking behaviors. Two measures of Self-Esteem are used: the first one is a general measure of Self-Esteem while the second one is composed of two dimensions distinguishing Self-Liking and Self-Competence. The Social Representation Theory describes a relation between Social Representation and behavior. In this line, Chapter 4 investigates the Social Representation of risk in a gambling context with two studies. The first study is done via free association tasks and the second study is based on interviews with both gamblers who have gambling disorders and gamblers who do not have gambling disorder
TenEyck, Michael F. "Cumulative Disadvantage Across the Life Course: Results from a Nationally Representative Sample." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin149580728755573.
Full textDeFeo, Graig C. "Risk Factors for Recurrent Major Depressive Disorder in a Nationally Representative Sample." Thesis, University of South Florida, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1569946.
Full textThe public use version of the National Comorbidity Survey – Replication (NCS-R) dataset was used (N = 995) to investigate risk factors for recurrent major depressive disorder (MDD) that are evident before recovery from the first major depressive episode (MDE) by comparing persons diagnosed with MDD who experienced a single MDE to persons with recurrent MDD.
Multiple logistic regression analyses assessed the independent risk of recurrent MDD for each of the following risk factors: an early age of onset (<30 years old), absence of a life stress trigger, chronic first episode, childhood parental loss, parental maltreatment, parental depression, comorbid anxiety disorder, and comorbid substance disorder. The relative excess risk due to interaction (RERI) assessed the risk of recurrent MDD associated with the interaction of an early onset with three childhood-based vulnerabilities: a) parental depression, b) parental loss, and c) parental maltreatment.
There was a statistically significant risk of recurrent MDD found for the following risk factors: early onset, stress trigger absent, childhood parental loss, parental maltreatment, parental depression, and anxiety disorder; marginally significant results suggested an increased risk of recurrent MDD for substance disorder. There was a significant increased risk found for the interaction of an early onset with parental depression and similar non-significant trends were found for the interactions of early onset with parental loss and early onset with parental maltreatment.
An early onset, the absence of a life stress trigger, and the presence of parental loss, parental maltreatment, parental depression, a comorbid anxiety disorder, and a comorbid substance disorder each confer greater risk of recurrent MDD among persons that have not yet recovered from their first lifetime MDE. The presence of an early onset combined with a childhood-based vulnerability such as parental depression, parental loss, or parental maltreatment, indicate an especially high risk of recurrent MDD. These findings may inform the development of a screening tool to assess risk for recurrent MDD and early intervention to prevent recurrent MDD. Future research should employ a longitudinal research design to replicate and expand upon these findings.
DeFeo, Graig Charles. "Risk Factors for Recurrent Major Depressive Disorder in a Nationally Representative Sample." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5351.
Full textSundvall, Denise, and Sara Harila. "Rise of The Robots : En innehållsanalys om representation av virtuella influencers." Thesis, Luleå tekniska universitet, Institutionen för konst, kommunikation och lärande, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-73567.
Full textBaccelli, Jean. "Essais d'analyse de la théorie axiomatique de la décision." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEE002.
Full textThis thesis consists of three essays on axiomatic decision theory. Theybelong primarily to the epistemological analysis of decision theory.The first essay, “The limits of ordinalism”, focuses on ordinalism, a doctrinethat was instrumental in the constitution of contemporary microeconomictheory. First, I provide an abstract definition of this doctrine.I characterize it by the following claim: if the underlying data are choicedata, then no non-ordinal property of utility can be empirically meaningful.Second, I evaluate the above claim. I confront this claim with variousdecision-theoretic developments which seem to question its validity. I showthat, despite appearances, this claim is not challenged by the theoreticaldevelopments in question.The second essay, “Axiomatic analysis and risk attitudes”, examines thestatus of risk attitude concepts in decision theory. At first sight, axiomaticanalysis does not rely on these concepts. This indicates a certain neutrality ofdecision models regarding risk attitudes. Further analysis, however, leads oneto recognize the importance of what I call the conditional variation and thestrengthening of risk attitudes. This establishes the axiomatic significance ofrisk attitude concepts.The third essay, “Do bets reveal beliefs?”, examines the preference-basedapproach to the identification of beliefs. It focuses on the main problem towhich this approach is exposed, namely state-dependent utility. First, theproblem is illustrated in full detail. Four types of state-dependent utility issuesare distinguished. Second, a strategy for identifying beliefs under statedependentutility is presented and discussed. For the problem to be solvedfollowing this strategy, however, preferences need to extend beyond choices. Iargue that this is a necessary feature of any complete solution to the problemof state-dependent utility. I also claim that this is the main conceptuallesson to draw from this problem. I explain why this lesson is of interest toeconomists and philosophers alike
Maggis, M. "ON QUASICONVEX CONDITIONAL MAPS. DUALITY RESULTS AND APPLICATIONS TO FINANCE." Doctoral thesis, Università degli Studi di Milano, 2010. http://hdl.handle.net/2434/150201.
Full textTissell, Rachel L. "Child maltreatment risk| Associations with mothers' representations of childhood attachment, trauma, caregiving, and regulation." Thesis, Mills College, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10163157.
Full textChild maltreatment models view risk as a complex constellation of factors that emphasize parents’ trauma experiences and regulation processes. Attachment research has shown that mothers’ representations of childhood attachment and caregiving places their children at developmental risk. Studies to date have evaluated contributing factors separately, but little research considers mothers’ past and current experiences combined with relational trauma and familial regulation patterns. The current research adopted an integrated perspective using known maternal risk factors, and extended existing research in several unique ways by examining association with both adult trauma and childhood trauma; caregiving representations; pathological mourning; and capacity for emotion regulation. Seventy-five mothers with children between 19-74 months (40% boys) from diverse socio-economic and cultural backgrounds completed assessments of maltreatment risk, adult attachment, caregiving, relational trauma, parenting stress, and emotion regulation. Maternal representations of attachment were significantly related to risk, with unresolved mothers demonstrating the highest risk. There were significant positive associations between risk and relational trauma – both frequency and subjective distress with parents and partners. Helpless and heightened caregiving representations, parenting stress, and emotion regulation were also all significantly related to risk. This is the first study to consider maltreatment in the context of relational trauma as defined by Bowlby’s (1980) model of pathological mourning. Risk scores were significantly greater for mothers classified in pathological mourning groups than other mothers. These findings punctuate the effects of problems associated with mourning attachment trauma on maternal regulatory capacities and parenting risk. Implications for infant mental health research and intervention are discussed.
Grembo, Nicolas. "Risque industriel et représentation des risques : approche géographique de la représentation du risque industriel majeur en région Poitou-Charentes." Phd thesis, Université de La Rochelle, 2010. http://tel.archives-ouvertes.fr/tel-00573845.
Full textPenn, Gemma Louise. "Medicalization and representations of smoking in public discourse and images." Thesis, London School of Economics and Political Science (University of London), 1998. http://etheses.lse.ac.uk/1503/.
Full textYang, Huiqin. "The effects of improved representative design on Nurse's risk assessment judgements and confidence calibration." Thesis, University of York, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516581.
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