Over recent years, the study of industrial districts, and inter-organizational relations has become a major theme of interest in network research. Theories characterized by an increased inter-relatedness between heterogeneous actors and knowledge fields point to a new form of inter-organizational relationship development. This is basicly based on the idea of creating trust between firms to increase their chances of success and to keep pace with the development of all relevant technologies. In this thesis, we present some data from a research project we have conducted in OSTIM industrial district, Ankara, Turkey. First, we present the theoretical perspectives which appear relevant to such investigation, and which aims at developing a better a network model of the inter-organizational relations of district firms, as well as trust, informal contracts and centrality issues, particularly as regards technological innovation and technology transfer of firms, respectively. Moreover, the evidence presented in this thesis is unequivocal in noting that long term inter-organizational relations and trust may be a necessary and a sufficent condition for a small and medium sized enterprise (SME) to take its place in the center of a complex web of inter-organizational relations as seen in an industrial district.

This thesis focuses on the relations between job insecurity and its consequences by addressing several specific research aims. The first research aim focused on expanding the range of job insecurity consequences by studying the relation between job insecurity and work–family conflict over time. In Study 3 it was found that job insecurity affected work–family conflict one year later among men. The second research aim addressed mechanisms involved in the job insecurity–outcome relations, focusing on factors that might make employees more vulnerable to, or buffer against the negative effects of job insecurity. Coping styles were investigated as potential moderating factors in Study 1, where it was found that problem-focused coping did not function as a buffer, nor did devaluation or avoidance coping. Avoidance coping was actually a vulnerability factor for men, and related to more negative reactions to job insecurity in terms of well-being. Two forms of job dependence as potential moderating factors of the relations between job insecurity and its outcomes were investigated in Study 2. It was found that the relative contribution to the household income functioned as a vulnerability factor for men. Higher levels of work centrality combined with either quantitative or qualitative job insecurity were related to higher levels of job satisfaction among women. Finally, in Study 3, workload was investigated as a mediating variable of the relation between job insecurity and its outcomes, where workload linked job insecurity to work–family conflict one year later among men. The third research aim of this thesis addressed gender, where differences between men and women were found in all three studies. Overall men seemed to suffer more from job insecurity. The results of the thesis confirm the negative impact of job insecurity, but also provide information regarding important areas for future research to study, such as the investigation of mechanisms and the role of gender. / At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 1: Submitted. Paper 2: Submitted.

Made available in DSpace on 2014-06-11T19:35:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-08-07Bitstream added on 2014-06-13T19:46:48Z : No. of bitstreams: 1 montessoro_ccl_dr_prud.pdf: 4241933 bytes, checksum: 0ad603d941483f3be52f32f440151d0f (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Este trabalho visa a analisar os novos espaços de consumo na área central de Anápolis, no Estado de Goiás a partir do comércio informal, uma vez que há uma interação entre os diversos espaços produzidos no meio urbano, contribuindo assim, para uma interpretação das práticas existentes na cidade. Nesta perspectiva, discutimos o uso e apropriação de algumas ruas no centro pelos camelôs e ambulantes, além do camelódromo e de um shopping popular que por sua vez comercializa produtos que são adquiridos pelas pessoas que circulam nesses espaços, levando-se em consideração o consumo que cria e recria uma realidade que vislumbra as formas e funções da e na cidade como o espetáculo da (re)produção do capital e como elementos articulados ao processo de (re)produção do espaço urbano em cidades de médio porte. Partimos da idéia de que o centro principal e tradicional redefine seus usos tomando como base as estratégias de localização das atividades ditas informais no seu interior, reafirmando a centralidade urbana expressa no contexto de relações preexistentes, visto que as singularidades das funções envolvem uma avaliação das novas formas de comercialização do setor terciário. Realizamos uma análise desenvolvida mediante o levantamento e revisão bibliográficos, pesquisa de campo e análise dos dados para a compreensão da dinâmica do centro da cidade de Anápolis a partir da atuação do comércio informal. / This work seeks to analyze the new consumption spaces in the central area of Anápolis, in the state of Goiás starting from the informal trade, once there is an interaction among the several spaces produced in the urban way, so contributing, for an interpretation of the existent practices in the city. In this perspective, we discussed the use and appropriation of some streets in the center by the street-fakers and travelings besides the street-fakers place and a popular shoppings that for its time markets products that are acquired by the people that circulate in those spaces, being taken in consideration the consumption that creates and (re)creates a reality that shimmers the forms and functions of the and in the city as the show of the capital (re)production and as articulated elements to the process of (re)production of the urban space in medium load cities. We started of the idea that the main and traditional center redefine its uses, taking as base the location strategies of the said informal activities in this interior, reaffirming the centrality expressed in the context of the preexistents relationships, because the singularities of the functions involve an evaluation of the new commercialization ways of the tertiary sector. We accomplished an analysis developed by means of the rising and bibliographical revision, field research and data analysis for the understanding of Anápolis downtown dynamics starting from the informal trade performance.

Esse trabalho consiste em um estudo sobre a aplicabilidade da medida de centralidade de intermediação (betweenness centrality) combinada com demandas de tráfego em redes viárias com o objetivo de identificar os principais pontos dessas redes. Como principais pontos refere-se aqui aos que aparecem com maior frequência entre os caminhos utilizados pelos motoristas que se deslocam pela rede viária. Trata-se de um estudo exploratório, que se inicia com a aplicação da centralidade de intermediação sobre redes simples, estendendo-se até simulações sobre redes baseadas em mapas reais. Nesse trabalho é analisado o comportamento da medida de centralidade sobre a topologia da rede - i.e. tanto sem considerar uma demanda, como considerando demandas de diversas magnitudes. Para ilustrar a proposta, os resultados são confrontados com valores de centralidade de intermediação calculados sobre as taxas de ocupação das vias extraídas de simulação microscópica. Ao final, foram apresentadas evidências de que o método proposto consegue explicar os fluxos de tráfego com melhor desempenho do que a centralidade de intermediação original. No entanto, o método mostrou-se muito sensível à função de custo utilizada na atribuição da demanda de tráfego ao grafo da rede. Os melhores resultados demonstrados pela abordagem proposta foram obtidos em experimentos sobre redes não regulares e com demandas de tráfego não uniformes. No caso de redes regulares com demanda uniforme, o melhor desempenho foi obtido pelo cálculo da centralidade sem considerar a demanda, mas atribuindo-se o custo unitário às arestas do grafo representativo da rede. / This work consists of a study of applicability of betweenness centrality combined with traffic demands in road networks with the objective of identifying their central points. By central points we refer to those which appear with high frequency among the paths used by drivers that move along the road network. It is an exploratory study, which begins with the application of the betweenness centrality on simple networks, extending to simulations on networks based on real maps. In this study we have analyzed the behavior of the metric over the network topology - i.e. without considering demand, as well as experiments considering demands with several magnitudes. To illustrate the proposed method, the results are compared with betweenness centrality values calculated over roadways occupation rates extracted from microscopic simulation. At the end, evidence that the proposed method can explain traffic flows with better performance than the original betweenness centrality were presented. However, the proposed method was shown to be very sensitive to the cost function used in the allocation of the graph network traffic demand. The best results demonstrated by the proposed approach were obtained in experiments on nonregular networks and non-uniform traffic demands. In the case of regular networks with uniform demand, the best performance was obtained by calculating the betweenness centrality without considering the demand, but assigning the unitary cost to the edges of the network graph.

La sous-région Afrique centrale, dans la perspective de poursuivre la construction de son espace économique et monétaire commun (CEMAC) conforté, a décidé de mettre en place une bourse des valeurs mobilières de l’Afrique centrale (BVMAC) pour le développement de son système financier commun à compétence sous régionale.Parallèlement, l’un des pays membres de la CEMAC, le Cameroun en l’occurrence dispose d’une bourse des valeurs mobilières, la Douala Stock Exchange (DSX), ayant les mêmes objectifs, mais à compétence nationale. Il se pose dès lors, des problèmes de concurrence, de compétitivité et d’efficacité. Bref un problème de performance des deux places boursières fragilisant ainsi le financement de son économie par le marché financier au détriment des potentiels bénéficiaires majeurs que sont les entreprises.Comment restructurer et réorganiser les marchés financiers de l’Afrique centrale (CEMAC) afin d’améliorer leurs performances dans le financement de son économie? Cette interrogation pose alors la problématique de la reconstruction des marchés financiers de la CEMAC. Pour répondre à cette question principale, il y a lieu de prendre en compte deux déterminants constitutifs de la CEMAC: L’Union Economique de l’Afrique centrale (UEAC)Et L’Union Monétaire de l’Afrique centrale (UMAC).Afin de s’appuyer sur quatre théories à savoir : La théorie de la zone monétaire optimale ; La Théorie de la centralité ; La théorie de la mutualisation ; La théorie du changement structurel (organisationnel).Mais aussi de manière empirique, pour savoir comment s’organise selon les modèles actuels, c’est-à-dire les standards internationaux, les différents marchés financiers à travers le monde.Pour démontrer la contrainte d’une consolidation de ces deux marchés financiers dans un même espace communautaire sur la base du modèle CODERE conforté selon le modèle organisationnel de Kurt Lewin (1940), et analyser leur performance actuelle. Le chemin emprunté de l’intégration financière de ces marchés financiers conduit vers une spécialisation bipolaire ou multipolaire de cet acteur privilégié de développement qu’est le marché financier / The sub-region Central Africa, in the perspective of continuing the construction of its economic and common Monetary Area (CEMAC) strengthened has died to set up a stock exchange of Central Africa (BVMAC) for the development of its system common financial system with subregional competence.Meanwhile, one of the member countries, in this case Cameroon has a stock exchange, the Douala Stock Exchange (DSX), with the same objectives but national competence. There are therefore problems of competition, competiveness and efficiency. In short, a problem of performance of the two stock exchanges weakening the financing of its economy by the financial market to the detriment of the major potential beneficiaries that are the companies.How to structure and reorganize the financial markets of Central Africa to improve their performance in financing its economy? This question then raises the issue of the reconstruction of CEMAC’s financial markets. To answer this main question, it is necessary to take into account two constituent determinants of CEMAC: The Economic Union of Central Africa (UEAC)And The Central Africa Monatry Union (UMAC)In order to support four theories namely: Optimal Monetary Zone theory Centrality theory Mutualization theory Structural change (organization)But also empirically, to know how is organized according to the current models, that is to say the international standards of different financial markets around the world.To demonstrate the constraint of consolidating these two financial markets in the same community space on the basic of the CODERE model is strong according to Kurt Lewin (940) model and analyze their current performance. The hain borrowed from the financial integration of these financial market leads to a bipolar or multipolar specialization of this privileged development actor that is the financial market.

abstract: Measuring node centrality is a critical common denominator behind many important graph mining tasks. While the existing literature offers a wealth of different node centrality measures, it remains a daunting task on how to intervene the node centrality in a desired way. In this thesis, we study the problem of minimizing the centrality of one or more target nodes by edge operation. The heart of the proposed method is an accurate and efficient algorithm to estimate the impact of edge deletion on the spectrum of the underlying network, based on the observation that the edge deletion is essentially a local, sparse perturbation to the original network. Extensive experiments are conducted on a diverse set of real networks to demonstrate the effectiveness, efficiency and scalability of our approach. In particular, it is average of 260.95%, in terms of minimizing eigen-centrality, better than the standard matrix-perturbation based algorithm, with lower time complexity. / Dissertation/Thesis / Masters Thesis Computer Science 2016

Orientador: Arthur Magon Whitacker / Banca: Everaldo Santos Melazzo / Banca: Luciano Antonio Furini / Resumo: Esta pesquisa teve como interesse principal o processo de reestruturação urbana e a análise da centralidade intraurbana da cidade de Bragança Paulista - SP. Tomamos, pois como objetivo central em nossa pesquisa a busca pela compreensão das relações existentes entre a morfologia urbana que aponta para os processos de reestruturação urbana e de formação de novas centralidades a partir da escala intraurbana da cidade. Com a intenção de analisar, compreender e também de propor novos questionamentos acerca das permanências e transformações da cidade, que identificam conseqüências e tendências do processo de reestruturação urbana. Propusemo-nos a identificar áreas dotadas de centralidade presentes na cidade de Bragança Paulista e sua relação com a formação de espacialidades e temporalidades, analisando a constituição de novos espaços de produção e consumo bem como sua participação na construção do processo de reestruturação da cidade ... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: This research had as main concern the process of urban restructuring and analysis of the centrality intra-urban city of Bragança Paulista - SP. We therefore main objective in our research the quest for understanding the relationship between urban morphology that points to the processes of urban restructuring and formation of new centers from the scale intra-urban city. With the intention to analyze, understand, and also propose new questions about continuities and transformations in the city, identifying trends and consequences of the process of urban restructuring. We have proposed us to identify areas endowed with gifts of centrality in the city of Bragança Paulista and its relation to the formation of spaces and times, analyzing the constitution of new spaces of production and consumption as well as its participation in the construction of the restructuring of the city ... (Complete abstract click electronic access below) / Mestre

Made available in DSpace on 2014-06-11T19:28:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-10-18Bitstream added on 2014-06-13T19:48:01Z : No. of bitstreams: 1 santana_mjr_me_prud.pdf: 3420746 bytes, checksum: b9781e0d34ea8a1fa659c3dd9a801eec (MD5) / PROPG / Secretaria de Estado da Educação / Esta pesquisa teve como interesse principal o processo de reestruturação urbana e a análise da centralidade intraurbana da cidade de Bragança Paulista – SP. Tomamos, pois como objetivo central em nossa pesquisa a busca pela compreensão das relações existentes entre a morfologia urbana que aponta para os processos de reestruturação urbana e de formação de novas centralidades a partir da escala intraurbana da cidade. Com a intenção de analisar, compreender e também de propor novos questionamentos acerca das permanências e transformações da cidade, que identificam conseqüências e tendências do processo de reestruturação urbana. Propusemo-nos a identificar áreas dotadas de centralidade presentes na cidade de Bragança Paulista e sua relação com a formação de espacialidades e temporalidades, analisando a constituição de novos espaços de produção e consumo bem como sua participação na construção do processo de reestruturação da cidade... / This research had as main concern the process of urban restructuring and analysis of the centrality intra-urban city of Bragança Paulista - SP. We therefore main objective in our research the quest for understanding the relationship between urban morphology that points to the processes of urban restructuring and formation of new centers from the scale intra-urban city. With the intention to analyze, understand, and also propose new questions about continuities and transformations in the city, identifying trends and consequences of the process of urban restructuring. We have proposed us to identify areas endowed with gifts of centrality in the city of Bragança Paulista and its relation to the formation of spaces and times, analyzing the constitution of new spaces of production and consumption as well as its participation in the construction of the restructuring of the city ... (Complete abstract click electronic access below)

Made available in DSpace on 2014-06-11T19:24:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2001-05-04Bitstream added on 2014-06-13T18:20:24Z : No. of bitstreams: 1 tavares_jh_me_prud.pdf: 2365532 bytes, checksum: 8ef18849828620e93d2586828d5e7035 (MD5) / As modificações nas áreas rurais, reflexo das transformações nas relações de produção ocorridas a partir da década de 1970, provocaram mudanças nas estruturas socioeconômicas em escala regional, assim como uma aceleração das mudanças espaciais, sobretudo no que se refere às aglomerações urbanas. Neste contexto, a presente pesquisa analisa as relações demográficas, socioeconômicas e espaciais que se processam atualmente entre as cidades norte-paranaenses de Cambé, Ibiporã, Londrina e Rolândia, as quais compõem a Aglomeração Urbana de Londrina. Estes núcleos urbanos apresentam tamanhos demográficos diferenciados, motivo pelo qual devemos considerar distintos graus de complexidade de suas atividades. Verifica-se que, em um primeiro momento, as pequenas cidades eram responsáveis pelo fornecimento de bens e mercadorias à sua população rural, paulatinamente, foram perdendo esta função. Neste processo, o traçado da rede urbana planejada inicialmente pelos agentes colonizadores, já não atendiam às novas demandas, atravessando um processo de reorganização/refuncionalização, o qual implica também em novos padrões de interações espaciais, os quais são viabilizados pelo aparato técnico implantado na região. Nesse processo o desenvolvimento dos sistemas de transportes e a ampliação das formas de circulação, entre outros fatores, refletiram na intensificação dos fluxos. Se em outro momento a organização hierárquica produzia vetores das cidades menores para as progressivamente maiores e vice versa, reforçando o padrão concêntrico de adensamento econômico e populacional, atualmente existem múltiplas possibilidades de cidades de diferentes padrões se relacionarem. / The changes in rural areas, are a reflex from transformations of productions relations occurred since 70þs 20th century, that make some changes in the socioeconomics structure in regional scale, such as acceleration of spatial changes, over all in what refers to urban agglomeration. In this context, this present search analise demographics relations, socioeconomics and spatials that are processed among the cities from the north of Paraná state: Cambé, Ibiporã, Londrina and Rolândia which make what we call Urban Agglomeration from Londrina. These urban centers show different demographic lentgh, reason for what we should consider distincs grades of complexity from its activities. We can check that in a first moment, the small cities were responsable for providing goods to its rural population, gradually, it was losting this purpose. In this process, the plan of urban net firstly planned for the settlers agents, does not serves to the new demand, crossing a process of reorganization/refunctualization, which also involves new models of spatials interactions, that are possible for the techniques established in the region. In this process the development of transportation systems and the enlargement of the circulation forms, among other reasons, reflected in the flowings. If in an other moment the hierarchichy organization produced ways from the small cities to gradually the bigger ones and vice versa, reinforcing the concentric model from economic and populational concentration, actually there are lots of possibilities from cities with different models have some kind of relation.

Made available in DSpace on 2015-05-14T12:16:56Z (GMT). No. of bitstreams: 1 parte1.pdf: 6400029 bytes, checksum: edde12e50971f7d7e84f5343621c6a51 (MD5) Previous issue date: 2011-08-12 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This paper refers to research in the area surrounding the Boulevard Mall in Campina Grande, in order to deal with these changes and restructuring in the urban space of Campina Grande - PB, in the period 1999 to 2011. The research reveals the changes which have occurred in Campina Grande in the last decade, due mainly (but not exclusively), to the installation of the Boulevard Mall. Thus, there is a real process in this period of urban restructuring in the city, represented by the decentralization of some commercial activities and services in the traditional center, driven by the expansion of the city in East direction along with the direction of that mall s place. In order to verify this fact, a survey of urban land use in Otacílio Nepomuceno Street and Severino Cabral Avenue was conducted, in order to count the number of shops and services, land and homes. In addition to analyzing these two access roads to the mall, observations of the streets lying across these pathways were also made. We made the documentary research through analyzing newspapers, in order to gather information for the period prior to the construction of the mall, as well as in classified real estate sales in the years after the inauguration of the project, to see the process of valuation of urban land in this area.In addition, interviews with some former residents of Catolé neighborhood and with employees who work in dealerships around the Boulevard Mall were carried out. The research reveals the formation of a new centrality in Campina Grande, in the area located in the neighborhoods of Mirante, José Pinheiro and especially Catolé neighborhood. This process has triggered several changes in space. The Catolé neighborhood, particularly, used to have exclusively residential profile, but has undergone intense restatements in the last decade and has become a major area provider of services, including becoming the unifying area of flows originated not only from other neighborhoods in the city, as well as from other municipalities in the state, and neighboring states. / O presente trabalho refere-se à pesquisa realizada na área do entorno do Boulevard Shopping Campina Grande, a fim de tratar as modificações e reestruturações presentes no espaço urbano da cidade de Campina Grande - PB, no período de 1999 a 2011. A pesquisa revela as transformações ocorridas em Campina Grande na ultima década, decorrentes, principalmente (mas não exclusivamente), da instalação do Boulevard Shopping. Sendo assim, observa-se nesse período um verdadeiro processo de reestruturação urbana na cidade, representado pela descentralização de algumas atividades comerciais e de serviços no centro tradicional, impulsionadas pela expansão da cidade na direção Leste, em consonância com a direção da localização do mencionado shopping center. Para constatar esse fato, realizou-se o levantamento do uso do solo urbano na Rua Otacílio Nepomuceno e na Avenida Severino Cabral, a fim de contabilizar o número de estabelecimentos comerciais e de serviços, terrenos e residências. Também foram feitas observações a respeito das ruas transversais, que ligam essas principais duas vias de acesso ao shopping. A pesquisa documental em arquivos de jornais e mais especificamente nos classificados de vendas de imóveis nos anos posteriores à inauguração do empreendimento foi fundamental para a obtenção de informações do período que antecede a construção do shopping, bem como para constatar o processo de valorização do solo urbano nessa área. Realizou-se ainda entrevistas com alguns moradores antigos do Bairro do Catolé e com os funcionários das concessionárias que trabalham no entorno do Boulevard Shopping. A pesquisa revela o princípio de formação de uma nova centralidade em Campina Grande, na área localizada entre os bairros do Mirante, José Pinheiro e principalmente do Catolé. Tal processo vem desencadeando várias alterações no espaço. O Bairro Catolé, particularmente, possuía outrora um perfil exclusivamente residencial, mas tem passado por reformulações intensas na última década, configurando-se em uma importante área prestadora de serviços e aglutinadora de fluxos originários não apenas de outros bairros da cidade, como também de outros municípios do interior do estado, e de estados vizinhos.