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Barbárie virtual: simulacro e espetacularização da notícia em Israel no romance Partes Humanas, de Orly Castel-Bloom / Virtual barbarism: simulacrum and spectacle of the news media in Israel, in Orly Castel-Blooms romance Human PartsClarissa Feder 08 April 2013 (has links)
Este projeto de pesquisa propõe-se a analisar a presença da mídia na obra Partes Humanas, da israelense Orly Castel-Bloom. A escritora traz à luz Israel com um cenário apocalíptico, em que cada ser humano só tem olhos para si e vive, em meio a uma atmosfera de caos, a luta por sua sobrevivência. O pânico diário e a insatisfação crônica são as marcas registradas dos diferentes seres humanos que, por extensão, moldam e são moldados pelo cenário fragmentado, nebuloso e trágico em que vivem no país. Nessa obra pós-sionista, os meios de comunicação assumem um papel primordial, pois não se restringem a ser um reflexo dessa sociedade, mas procuram influenciá-la com o que transmitem. Pobreza, violência, guerra e sofrimento estão presentes nas pautas dos meios de comunicação de forma quase cinematográfica. Assim, a mídia contribui para espetacularizar a vida humana. / This research project aims to examine the role of the media in the book Human Parts, of the Israeli Orly Castel-Bloom. The writer describes Israel in an apocalyptic scenary, in which each person thinks only of themselves. The people live in a chaotic atmosphere, fighting for their survival. The existential panic and the chronic dissatisfaction are present in different characters who, by extension, influence and are influenced by the fragmented, murky and tragic context, in which they live. In this post-Zionist book, the media has a primordial role, not only is it a mirror of the society, but it is also influenced by what is heard and seen in it. Poverty, violence, war, suffering: everything is present in their lives and in the media as if it were in a movie. In this way, the media contributes to sensationalize human life.
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Reconnaissance de formes basée géodésiques et déformations locales de formes / Shape recognition based on geodesics and local deformation of shapesMerhy, Mayss'aa 29 June 2017 (has links)
Les performances d’un système de reconnaissance de formes dépendent en bonne partie de la qualité de l’image segmentée. Malgré les progrès effectués, une segmentation complète (c’est-à-dire avec des contours entiers) ne peut pas être toujours atteinte. Dans un premier temps, nous nous plaçons dans le cas où seulement certaines parties de la forme entière sont disponibles. D’abord, afin d’assurer l’invariance des parties de formes aux transformations géométriques, nous développons une méthode d’optimisation de l’analyse procustéenne qui consiste à retrouver les points extrémités optimaux qui minimisent la distance de Procutse. Ensuite, nous proposons une approche de reconnaissance de parties de formes et une approche de reconnaissance de formes partielles. Ces deux approches, basées-contour, sont fondées sur un recalage robuste entre les parties de formes. La méthode de recalage proposée consiste à optimiser une mesure de similarité basée sur les géodésiques dans l’espace de formes. Ainsi, nous exploitons le résidu du recalage pour définir une nouvelle métrique pour la reconnaissance de parties de formes. Puis, nous décrivons une stratégie de combinaison avec cette même métrique pour la reconnaissance de formes partielles. Par la suite, nous proposons d’utiliser la distance géodésique proposée pour la reconnaissance des parties de formes dans la définition d’une métrique globale pour la reconnaissance de formes entières. Les tests de reconnaissance (classification et recherche) sont effectués sur des parties requêtes et des formes entières de la base d’images MPEG-7, puis sur des images réelles segmentées. Les résultats expérimentaux montrent la supériorité de nos méthodes par rapport aux autres méthodes de l’état de l’art. / The quality of the segmentation process directly affects the performance of the shape recognition. Despite the progress that has been made, it is often unreachable to segment the entire object (i.e. closed contour). In fact, only some parts/fragments of objects can be detected. We first develop a new alignment method based on Procrustes analysis in order to ensure invariance of shape parts to geometric transformations (translation, rotation and scale factor). The proposed method consists in finding optimal extremities which minimize the Procrustes distance. Then, we propose a shape part recognition approach and a partial shape recognition approach. These two contour-based approaches are based on matching between shape parts to compare. This matching process consists in establishing a robust registration between shape parts based on geodesics in the shape space. Thus, we exploit the registration residual to define a novel distance for shape part recognition. Later, for partial shape recognition, we describe a geodesics-based combining strategy with the same distance. As well, we propose to use the geodesics distance proposed for shape part recognition to define a global distance for entire shape recognition. Experiments are carried out on parts of shapes and entire shapes of theMPEG-7 database, then on parts issued from segmented real images. The obtained results demonstrate the effectiveness of our proposed recognition schemes. The proposed approaches are shown to significantly outperform previous works for classification and retrieval applications.
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[en] PRODUCTION PLANNING AND CONTROL IN A MOTORCYCLE PARTS FACTORY: A CASE STUDY / [pt] PLANEJAMENTO E CONTROLE DA PRODUÇÃO EM UMA FÁBRICA DE PEÇAS PARA MOTOCICLETAS: UM ESTUDO DE CASOMARCELO JOSE LAVORATO CORDEIRO 24 April 2006 (has links)
[pt] Esta dissertação trata da análise e projeto de um sistema
de planejamento e
controle da produção para uma linha de fabricação de raios
e niples para
motocicletas, visando garantir um nível de atendimento
desejado, melhor
utilização das instalações, com baixo investimento em
estoques. Utilizou-se uma
metodologia investigativa para se conhecer os seis
principais elementos que
influenciam o projeto de um sistema de planejamento e
controle da produção: o
produto; o processo e as instalações; a demanda; o
mercado; a estratégia
competitiva e o desempenho do sistema atual. Identificou-
se nesta análise que
dois problemas principais causam o baixo desempenho do
sistema atual de
planejamento e controle da produção, são eles: (a) o
dimensionamento dos lotes
de fabricação e (b) a sincronia entre as etapas
produtivas. Para resolver o primeiro
problema, a dificuldade para determinar o custo de
preparação foi contornada
determinando-se tamanhos de lotes tais que, estando nas
proporções ótimas,
resultem num investimento total em estoque de ciclo igual
a uma meta
determinada por considerações gerenciais. Para o problema
de sincronia entre as
etapas produtivas propôs-se a utilização dos conceitos do
MRP II e um
planejamento agregado que garanta a viabilidade do plano
de materiais e serviços
necessários para a produção. Foi também sugerido um
controle JIT para os
produtos de demanda mais substancial e estável. / [en] This thesis addresses the analysis and design of a
production planning and
scheduling system for motorcycle-spokes and nipples
production lines, with the
objective of ensuring a desired customer service level,
coupled with high
utilization of the facilities and low investment in
stocks. The investigative
methodology used took into account the six key elements
that influence the
project of a production planning and scheduling system,
namely: the product, the
manufacturing facilities, the sales, the market, the
competitive strategy and the
actual system performance. The analysis identified two
main problems that caused
the low performance of the current production planning and
scheduling system,
they are: (a) the production lot size and (b) the
synchronism among the
manufacturing stages. In solving the first problem, the
difficult determination of
setup cost was circumvented by setting lot sizes such that
they are in optimal
proportions and the resulting total investment in cycle
stock equals a goal set
through managerial considerations. For the synchronization
among manufacturing
stages, it was suggested to use MRP II concepts, and an
aggregate production
planning to assure the materials and services required for
production. It was also
suggested the use of JIT for controlling products with
more substantial and stable
demand.
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3D Surface Analysis for the Automated Detection of Deformations on Automotive PanelsYogeswaran, Arjun 16 May 2011 (has links)
This thesis examines an automated method to detect surface deformations on automotive panels for the purpose of quality control along a manufacturing assembly line.
Automation in the automotive manufacturing industry is becoming more prominent, but quality control is still largely performed by human workers. Quality control is important in the context of automotive body panels as deformations can occur along the assembly line such as inadequate handling of parts or tools around a vehicle during assembly, rack storage, and shipping from subcontractors. These defects are currently identified and marked, before panels are either rectified or discarded. This work attempts to develop an automated system to detect deformations to alleviate the dependence on human workers in quality control and improve performance by increasing speed and accuracy.
Some techniques make use of an ideal CAD model behaving as a master work, and panels scanned on the assembly line are compared to this model to determine the location of deformations. This thesis presents a solution for detecting deformations of various scales without a master work. It also focuses on automated analysis requiring minimal intuitive operator-set parameters and provides the ability to classify the deformations as dings, which are deformations that protrude from the surface, or dents, which are depressions into the surface.
A complete automated deformation detection system is proposed, comprised of a feature extraction module, segmentation module, and classification module, which outputs the locations of deformations when provided with the 3D mesh of an automotive panel. Two feature extraction techniques are proposed. The first is a general feature extraction technique for 3D meshes using octrees for multi-resolution analysis and evaluates the amount of surface variation to locate deformations. The second is specifically designed for the purpose of deformation detection, and analyzes multi-resolution cross-sections of a 3D mesh to locate deformations based on their estimated size. The performance of the proposed automated deformation detection system, and all of its sub-modules, is tested on a set of meshes which represent differing characteristics of deformations in surface panels, including deformations of different scales. Noisy, low resolution meshes are captured from a 3D acquisition, while artificial meshes are generated to simulate ideal acquisition conditions. The proposed system shows accurate results in both ideal situations as well as non-ideal situations under the condition of noise and complex surface curvature by extracting only the deformations of interest and accurately classifying them as dings or dents.
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3D Surface Analysis for the Automated Detection of Deformations on Automotive PanelsYogeswaran, Arjun 16 May 2011 (has links)
This thesis examines an automated method to detect surface deformations on automotive panels for the purpose of quality control along a manufacturing assembly line.
Automation in the automotive manufacturing industry is becoming more prominent, but quality control is still largely performed by human workers. Quality control is important in the context of automotive body panels as deformations can occur along the assembly line such as inadequate handling of parts or tools around a vehicle during assembly, rack storage, and shipping from subcontractors. These defects are currently identified and marked, before panels are either rectified or discarded. This work attempts to develop an automated system to detect deformations to alleviate the dependence on human workers in quality control and improve performance by increasing speed and accuracy.
Some techniques make use of an ideal CAD model behaving as a master work, and panels scanned on the assembly line are compared to this model to determine the location of deformations. This thesis presents a solution for detecting deformations of various scales without a master work. It also focuses on automated analysis requiring minimal intuitive operator-set parameters and provides the ability to classify the deformations as dings, which are deformations that protrude from the surface, or dents, which are depressions into the surface.
A complete automated deformation detection system is proposed, comprised of a feature extraction module, segmentation module, and classification module, which outputs the locations of deformations when provided with the 3D mesh of an automotive panel. Two feature extraction techniques are proposed. The first is a general feature extraction technique for 3D meshes using octrees for multi-resolution analysis and evaluates the amount of surface variation to locate deformations. The second is specifically designed for the purpose of deformation detection, and analyzes multi-resolution cross-sections of a 3D mesh to locate deformations based on their estimated size. The performance of the proposed automated deformation detection system, and all of its sub-modules, is tested on a set of meshes which represent differing characteristics of deformations in surface panels, including deformations of different scales. Noisy, low resolution meshes are captured from a 3D acquisition, while artificial meshes are generated to simulate ideal acquisition conditions. The proposed system shows accurate results in both ideal situations as well as non-ideal situations under the condition of noise and complex surface curvature by extracting only the deformations of interest and accurately classifying them as dings or dents.
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Protocols de seguretat amb terceres parts: el problema de la confiança i la propietat de verificabilitatMut Puigserver, Macià 01 December 2006 (has links)
Les solucions proposades en els articles científics sobre els intercanvis electrònics entre dues parts sovint involucren terceres parts (TTPs) per resoldre i simplificar el problema, però els usuaris hi han de dipositar una certa confiança. Ara bé, la confiança no és garantia ferma del compliment dels requisits de seguretat. Per això, molts usuaris són reticents a dipositar confiança en entitats remotes, fet que en dificulta l'ús. Aquí mostram com, a partir d'un determinat protocol de seguretat, podem aconseguir que la TTP involucrada sigui verificable. Construïm un entorn de confiança dins del protocol per mitjà del subministrament d'evidències sobre cada una de les operacions de la TTP (definim i introduïm la verificabilitat on-line de la TTP). Aconseguim això gràcies a la detecció, l'anàlisi i la classificació de cada una de les accions de la TTP. Aportam unes orientacions de disseny que faciliten la introducció de TTPs verificables dins dels protocols.
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Integrating Structure and Meaning: Using Holographic Reduced Representations to Improve Automatic Text ClassificationFishbein, Jonathan Michael January 2008 (has links)
Current representation schemes for automatic text classification treat documents as syntactically unstructured collections of words (Bag-of-Words) or `concepts' (Bag-of-Concepts). Past attempts to encode syntactic structure have treated part-of-speech information as another word-like feature, but have been shown to be less effective than non-structural approaches. We propose a new representation scheme using Holographic Reduced Representations (HRRs) as a technique to encode both semantic and syntactic structure, though in very different ways. This method is unique in the literature in that it encodes the structure across all features of the document vector while preserving text semantics. Our method does not increase the dimensionality of the document vectors, allowing for efficient computation and storage. We present the results of various Support Vector Machine classification experiments that demonstrate the superiority of this method over Bag-of-Concepts representations and improvement over Bag-of-Words in certain classification contexts.
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Two-Echelon Supply Chain Design for Spare Parts with Time ConstraintsRiaz, Muhammad Waqas January 2013 (has links)
We consider a single-part, two-echelon supply chain problem for spare parts. The network consists of a single manufacturing plant, a set of service centers (SCs) and a set of customers. Both echelons keep spare parts using the base-stock replenishment policy. The plant behaves as an M/M/1 queueing system and has limited production and storage capacity. Demand faced by each SC follows an independent Poisson process. The problem is to determine optimal location-allocation and optimal base-stock levels at both echelons while satisfying the target service levels and customer preferences of SCs. We develop a mixed integer non-linear programming model and use cutting-plane method to optimize the inventory-location decisions. We present an exact solution procedure for the inventory stocking problem and demonstrate the limitations of using traditional inventory models like METRIC-like and Approximate in case of high utilization rates. We show the effectiveness of our proposed cutting-plane algorithm and provide important managerial insights for spare parts management.
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Coupled High-Order Finite Difference and Unstructured Finite Volume Methods for Earthquake Rupture Dynamics in Complex GeometriesO'Reilly, Ossian January 2011 (has links)
The linear elastodynamic two-dimensional anti-plane stress problem, where deformations occur in only one direction is considered for one sided non-planar faults. Fault dynamics are modeled using purely velocity dependent friction laws, and applied on boundaries with complex geometry. Summation-by-parts operators and energy estimates are used to couple a high-order finite difference method with an unstructured finite volume method. The unstructured finite volume method is used near the fault and the high-order finite difference method further away from the fault where no complex geometry is present. Boundary conditions are imposed weakly on characteristic form using the simultaneous approximation term technique, allowing explicit time integration to be used. Numerical computations are performed to verify the accuracy and time stability, of the method.
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Integrating Structure and Meaning: Using Holographic Reduced Representations to Improve Automatic Text ClassificationFishbein, Jonathan Michael January 2008 (has links)
Current representation schemes for automatic text classification treat documents as syntactically unstructured collections of words (Bag-of-Words) or `concepts' (Bag-of-Concepts). Past attempts to encode syntactic structure have treated part-of-speech information as another word-like feature, but have been shown to be less effective than non-structural approaches. We propose a new representation scheme using Holographic Reduced Representations (HRRs) as a technique to encode both semantic and syntactic structure, though in very different ways. This method is unique in the literature in that it encodes the structure across all features of the document vector while preserving text semantics. Our method does not increase the dimensionality of the document vectors, allowing for efficient computation and storage. We present the results of various Support Vector Machine classification experiments that demonstrate the superiority of this method over Bag-of-Concepts representations and improvement over Bag-of-Words in certain classification contexts.
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