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Robustesse du modèle de Rasch unidimensionnel à la violation de l’hypothèse d’unidimensionnalité.Boadé, Georges 06 1900 (has links)
Le modèle de Rasch est utilisé de nos jours dans de nombreuses applications en sciences sociales et en médecine. Parmi les applications de ce modèle, on trouve l’étude de la qualité psychométrique des items d’un test, le calibrage des items pour les tests adaptatifs, la production des mesures d’habileté en sciences de l’éducation. Il est particulièrement mis à profit dans des enquêtes internationales à grande échelle comme l’enquête PISA (Programme for International Student Assessment).
L’une des hypothèses que doivent vérifier l’ensemble des items du test devant mesurer un trait donné est celle de l’unidimensionnalité, c’est-à dire que tous mis ensemble ne doivent mesurer que le trait en étude, et la réponse que donne un individu à chacun de ces items n’est fonction que du niveau de ce trait chez cet individu. Il se pose donc l’épineuse question de la détermination de la dimensionnalité de l’outil de mesure, car l’objectif étant de ne conserver ensemble que des items concourant à mesurer un seul et même trait.
En pratique, les tests auxquels sont soumis les individus ne sont pas strictement unidimensionnels car nos réponses sont aussi conditionnées par nos habitudes et notre milieu. Le plus important selon Stout (1987) est d’avoir un test ayant une dimension dominante, car sinon on devra utiliser des modèles multidimensionnels qui s’avèrent souvent complexes et difficiles à interpréter pour un preneur de décision non expert en mesure.
Notre travail a consisté à explorer un ensemble de conditions dans lesquelles le modèle de Rasch unidimensionnel peut produire des mesures acceptables malgré la présence de plusieurs traits déterminants dans les données. Nous avons travaillé avec des données bidimensionnelles simulées, et avons mis à profit le modèle linéaire multiple et les statistiques d’ajustement infit t du modèle de Rasch unidimensionnel. / Today, the Rasch model is most used in many applications of the social sciences and in medicine. Among the applications of this model, one can cite the study of the psychometric qualities of test items, items calibration in adaptive testing and the production of skill measures in education science. It is particularly used in international large-scale surveys such as PISA (Programme for International Student Assessment) survey.
One of the assumptions test items selected to measure a given trait must satisfied is the unidimensionality assumption, that is all items put together should measure the trait under study, and the response given by an individual to each of these items is a function only of the level of the trait that the individual possesses. This raises the issue of determining the dimensionality of a measurement tool, because the goal is to keep only items that contribute to measure the single trait.
In practice, not all test instruments developed to collect data from individuals are strictly unidimensional because our responses are also influenced by our habits and our environment. According to Stout (1987) the most important thing is to have a test with a dominant dimension, otherwise we will use multivariate models that are often complex and difficult to interpret for a decision maker who is not an expert in measurement theory.
Our work has been to explore a set of conditions under which the Rasch model can produce acceptable measures despite the presence of several dimensions in the data. We worked with two-dimensional simulated data and have used the multiple linear regression model and infit statistics t produced by the unidimensional Rasch model. / Le logiciel de simulation des données et d'analyse est Conquest V.3
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Robustesse du modèle de Rasch unidimensionnel à la violation de l’hypothèse d’unidimensionnalitéBoade, Georges 06 1900 (has links)
No description available.
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"Mobile Fashion" ApplicationKashanipour, Morvarid January 2012 (has links)
This master thesis investigates studies on fashion oriented people according to the "Outfit-Centric Accessories" concept. The outfit-centric accessories concept originated from recent research study by Juhlin and Zhang (2011) about mobile phone representation in fashion and Aesthetic of Interaction area of Human-Computer Interaction (HCI). The term outfit-centric accessories originated from clothing and wearer. In this concept an outfit is playing a role as the centerpiece and a mobile phone is functioning as a sort of an accessory that can be added to an outfit. The main aim here is to explore design solution for matching the visual appearance of mobile device with different outfit of a person. The first phase of this thesis is based on a research conducted through a literature review on the Aesthetic Interaction and the Experience-Centered design approach. Literature study has been followed by studies the relation between the fashion and technology and the outfit-centric accessories concept precisely. The findings that are presented here are based on field studies on fashion oriented people who are interested in mobile phone design. Filed studies were conducted through gathering input entries from social networking services such as Facebook and Blogger, survey of questionnaire on outfit matching mechanism, and inquiring people around. The findings are described the outfit "Match Mechanism" and the "social activities around the outfit matching" in relation to the concept. These descriptions have led the project to the system design and development phase regarding the outfit-centric accessories concept. This phase resulted in the Android based mobile application named "Mobile Fashion". This application enables a user to match a mobile device with variety of clothing in the form of a background image, cover, or printable sticker (skin phone) and it allows a user to participate in social services by sharing the look with others. It is worth mentioning that "Mobile Fashion" application presented in Vinnova-nytt (June 2011, No.3, p15) and International Joint Conference on Ambient Intelligent (AmI'11 November, 16, 2011, Amsterdam) (see appendix 14 and 15).
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Multimediální učebnice vysokohorské turistiky\\ / Multimedia textbook of alpine tourism\\SEKAL, Aleš January 2008 (has links)
The sense of diploma work is to introduce the huge public with tha base of tourism in unglacial mountains. As an instrument it uses multimedia textbook. It helps to orientate in problem of choosing suitable equipment,its uses,keeping and it can bring near the newest trend in this area. It contains instruction for adoption basic practice and ways of moving in alpine world. To this transaction there is no need to use any special belaying pracitce.It shows how to orient in terrain with navigation assets, how to check off the risk of injuries-with the sudden weather reversion. And how to cope with first aid.
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Implementación de un asistente virtual de modas con el uso de una cámara Kinect v2 y procesamiento de imágenes / Implementation of a fashion virtual assistant with the use of a Kinect v2 camera and image processingVizcarra Casas, Christopher Alonso, Medina Quevedo, Gabriel Alejandro 31 March 2020 (has links)
Este artículo trata sobre la problemática y el desarrollo de un asistente virtual de moda propuesto mediante el uso de una cámara Kinect v2 y procesamiento de imágenes, para tiendas minoristas de moda. Surge principalmente como una respuesta a la incapacidad de proporcionar experiencias únicas durante el proceso de compra mediante el uso de diversos dispositivos. Debido a esto, se analizaron soluciones de asistente virtual similares orientadas a proporcionar recomendaciones de vestimenta para poder proporcionar un software que podría dar una sugerencia más personalizada para los usuarios basándose en sus características físicas. La validación del modelo se realizará a través de la experiencia de un grupo de usuarios en el momento del uso del asistente virtual y expertos en el área de evaluación de moda. / This article is about the problematic and development of a fashion virtual assistant proposed by using a Kinect v2 camera and image processing, for fashion retail stores. It comes up mainly as a response to the inability of providing unique experiences during the shopping process through the use of diverse devices. Because of this, similar virtual assistant solutions oriented to provide clothing recommendations were analysed to be able to provide a software that could give a more personalized suggestion for the users basing in their physical characteristics. The model validation will be done through the experience of a group of users at the moment of use of the virtual assistant and experts in the fashion assessment area. / Trabajo de investigación
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Budova VZP ČR Jihlava - stavebně technologický projekt / Building VZP ČR Jihlava – construction and technological projectKotrč, Ondřej January 2012 (has links)
The aim of the diploma thesis is a constructional and technological project of regional branch VZP in the town Jihlava. The project includes a building site outfit, technological rule for prefabricated skeletel constructions, budget, time schedule, kontrol and test plans, design of machine works, contract for work and safety report. As a part of the diploma thesis is also confrontation contact heta cladding system and heat cladding system with a ventilated air gap. The last supplement is safety report at demolitions.
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SUN PIECE : actions of cuttingGram, Greta January 2013 (has links)
This works explores how to work with Event scores as a design method. In the search for what is real or what is reality the already existing things are being explored. The work started with investigating suitable ways to work with the moving body in the design process, with the aim to find a method that gave control but also left some parameters to the undecided and ambiguous. Convinced that this will lead to something new some parts of the process were highlighted and re-formulated. / Program: Modedesignutbildningen
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End of LineARVIDSSON, EMELIE January 2013 (has links)
Lines are a fundamental part of visual perception. This work explores how to conceptually work with lines as guildelines when constructing garments. The aim is to investigate the dynamics of straight lines through experimental construction of dress.This dissertation is conducted through experimental artistic research. The main applied method is constructing from striving line compositions to three-dimensional shape. Other line properties, such as angle, width or length became influential variables in creating form and dynamic in combination with the choice of colour and fabric. Line compositions can provide strong dynamics given it’s put in relation to body and movement. / Program: Modedesignutbildningen
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