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A relação entre as infraestruturas produtivas e o produto interno bruto (PIB) das regiões brasileiras: uma análise por envoltória de dados / The relationship between productive infrastructure and gross domestic product (GDP) of brazilian regions: a data envelopment analysisPérico, Ana Elisa 08 June 2009 (has links)
O atual contexto de mercados abertos exige e, ao mesmo tempo, proporciona muitas mudanças para o mundo empresarial. Também relevante é a postura do Estado diante do cenário globalizado. A abertura dos mercados exigiu e exige uma nova postura do Estado, seja como mero regulador ou como intervencionista. Há áreas específicas em que, devido a características particulares, o Estado representa o único e principal ator no que diz respeito à realização de investimentos, como é o caso das infra-estruturas. O objetivo geral do presente trabalho foi analisar as formas pelas quais as infraestruturas produtivas relacionam-se com o produto interno bruto (PIB) das regiões brasileiras, determinando a margem de contribuição das categorias de infraestrutura para a formação do PIB de cada região. A investigação foi realizada para o total das regiões brasileiras, no período de 1980 a 2005. Por meio de modelagem teórica e testes econométricos definiu-se a função utilizada e os dados das seguintes variáveis foram coletados: transportes, comunicação, energia (variáveis de infraestrutura), capital fixo e emprego. Para as variáveis de infraestrutura trabalhou-se com as respectivas capacidades. A análise por envoltória de dados foi a principal técnica utilizada neste trabalho, seu princípio básico está relacionado à comparação de eficiência entre unidades, ou seja, entre realidades operacionais e não entre um ideal inatingível ou algo que considerado como produção ótima, sem observações práticas. Para todas as regiões analisadas, independentemente do perfil econômico da mesma, foi possível ressaltar a importância verificada nas variáveis de infraestrutura. Em determinados momentos observou-se maior utilidades das mesmas na composição do PIB. Houve, em quase todos os períodos, a predominância do padrão utilidade-capacidade, em que as variações nas capacidades representaram respostas da maior utilidade das mesmas no período imediatamente anterior ao analisado. Observações fora do padrão foram identificadas, algumas possivelmente relacionadas à incoerência de dados, outras, vinculadas ao não controle de variáveis que também podem afetar o PIB. Dessa forma, os resultados encontrados permitiram respaldar o papel produtivo das infraestruturas e sua influência na eficiência das regiões analisadas. / The current context of open markets requires and, at the same time, provides many changes to the business world. Also relevant is the stance of the State before the global scenario. The opening of markets has required and requires a new attitude of the State, either as a mere regulator or as an interventionist. There are specific areas where, due to particular characteristics, the State is the only and main actor in relation to the making of investments, such as infrastructure. The general objective of this study was to analyze the ways in which the productive infrastructures are related to the gross domestic product (GDP) of the brazilian regions, determining the contribution margin of the categories of infrastructure for the formation of the GDP of each region. The research was performed for all regions of Brazil, from 1980 to 2005. Through theoretical modeling and econometric tests the function was defined and data of following variables were collected: transportation, communication, energy (variables of infrastructure), fixed capital and employment. For the infrastructure variables their capabilities were used. The data envelopment analysis was the main technique used in this work, its basic principle is related to the comparison of efficiency among units, among operational realities and not among an unattainable ideal or something that considered optimal production without comments practices. For all regions analyzed, irrespective of their economic profile, it was possible to emphasize the importance found in infrastructure variables. At certain times was greater utility of these variables in the composition of GDP. There was, in almost all periods, the predominant pattern of use-ability, where the variations in capacities represented answer of more utility of these variations in the period the previous immediately analyzed. Observations outside of the range were identified, some possibly related to the inconsistency of data, others were bound to no control of variables that may affect the GDP. Thus, the results found enabled legitimize the role of productive infrastructure and its effect on the efficiency of regions analyzed.
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Segurança das rodovias federais brasileiras : uma abordagem pela análise envoltória de dados /Barduchi, Caroline Sakamoto. January 2018 (has links)
Orientador: Enzo Barberio Mariano / Banca: José Alcides Gobbo Junior / Banca: Daisy Aparecida do Nascimento Rebelatto / Resumo: A falta de segurança no trânsito é um problema de ordem mundial, ocasionando milhares de óbitos, além de perdas materiais muitas vezes irreparáveis para os indivíduos envolvidos nos acidentes. Na Europa, a gestão da segurança rodoviária promoveu a redução considerável do número de acidentes, por meio da aplicação de intervenções técnicas e rígida fiscalização. Considerando as estratégias de gerenciamento como um dos fatores determinantes para se garantir o progresso da segurança rodoviária, o presente estudo objetivou construir um índice de segurança das rodovias federais brasileiras por Estado. Nesse sentido, a técnica análise envoltória de dados (DEA) foi utilizada considerando as variáveis relacionadas aos investimentos e aos óbitos como inputs e as variáveis relacionadas ao comprimento da malha rodoviária e à população como outputs. A DEA foi aplicada em três diferentes formas e momentos: o método BCC orientado aos inputs, o método ERM orientado aos inputs e o modelo BCC orientado aos inputs com a variável "investimentos" fixado como input não discricionário. Com isso, foi possível obter três diferentes rankings, o que permitiu a sugestão de possíveis diretrizes gerais de prevenção e combate aos acidentes para cada caso específico. O estudo inova ao construir pela primeira vez para o Brasil um índice que considere diferentes componentes da segurança rodoviária. Além disso, o detalhamento da metodologia apresentada objetivou auxiliar as pesquisas futuras que visem utilizar... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The lack of traffic safety is a worldwide problem, causing thousands of deaths, as well as material losses that are often irreparable for individuals involved in accidents. In Europe, road safety management has led to a considerable reduction in the number of accidents, through the application of technical interventions and rigid supervision. Considering management strategies as one of the determining factors for ensuring road safety progress, the study aimed to build the safety index of Brazilian federal highways by State. In this sense, the data envelopment analysis technique (DEA) was used considering the variables related to investments and deaths as inputs and variables related to the length of the road network and to the population as outputs. The DEA was applied in three different forms and moments: the input-oriented BCC method, the input-oriented ERM method, and the input-oriented BCC model with the "investments" variable set as non-discretionary input. Therefore, it was possible to obtain three different rankings, which allowed the suggestion of possible general guidelines for prevention and combat of accidents for each specific case. The study innovates when constructing for the first time for Brazil an index that considers different components of road safety. In addition, the detailing of the methodology presented was intended to aid future research aimed at using the DEA as a tool for evaluating traffic safety. It is hoped that this research will contribute to th... (Complete abstract click electronic access below) / Mestre
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Eficiência relativa das filiais de uma cooperativa de agronegócios: estudo dos fatores internos e externos utilizando a análise envoltória de dadosLeal, Francisco Cezar dos Reis 08 July 2013 (has links)
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Previous issue date: 2013-07-08 / Nenhuma / Este trabalho objetiva avaliar os elementos internos e externos que podem comprometer a eficiência das filiais de uma cooperativa de agronegócio localizada na região sul do país, e, para tanto, estabelece critérios e modelos que permitem distinguir operações eficientes de operações ineficientes. O estudo contextualiza-se no histórico do cooperativismo, assim como na representatividade do atual panorama econômico brasileiro e do setor de agronegócio. Considerando o objetivo deste estudo, após efetuar as análises estatísticas de correlação, utiliza a metodologia da Análise Envoltória de Dados (DEA), de forma a gerar os escores e identificar as filiais eficientes decorrentes de seus elementos internos. Por conseguinte, foram utilizadas as variáveis externas juntamente com os escores resultantes da DEA, para avaliar os impactos destes elementos externos na eficiência das filiais da cooperativa, utilizando a análise de regressão. A partir deste estudo, pode-se avaliar que a variável externa que tem maior impacto na eficiência das filiais da cooperativa em relação aos escores apresentados é o Produto Interno Bruto municipal, seguida pelo Valor Adicionado Bruto do Segmento Agropecuário e a População Rural, os quais se mostraram significantes, conforme resultados apresentados na análise. Outrossim, as variáveis internas (inputs e outputs) mais contributivas para descrever a fronteira da eficiência (44,4% das unidades) são Potencial de Faturamento, Colaboradores e Número de Associados. / This study evaluates the internal and external elements that may compromise the efficiency of the branches of a cooperative agribusiness located in the southern region of Brazil, and, therefore, establish criteria and models that distinguish efficient operations from inefficient operations. The study is contextualized on the history of cooperatives, as well as their representation within the current economic outlook and the Brazilian agribusiness. Given the objective of this study, after performing statistical analyzes of correlation, we used the methodology of Data Envelopment Analysis (DEA) to generate the scores and identify efficient units arising from its internal elements. Therefore, we used the external variables with the scores resulting from the DEA to evaluate the impact of these external factors on predicting the internal efficiency of the cooperative units, using regression analysis. The study revealed that the external variable that has the greatest impact on the efficiency of the units of the relation to the scores presented is the municipal Gross Domestic Product, followed by the Gross Value Added of Agriculture and Rural Population Segment, which proved to be significant according to the results presented in the analysis. Likewise, the most descriptive internal variables (inputs and outputs) for representing the efficient frontier (44.4% of the units) are Potential Revenue, Number of Employees and Associates.
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Evaluating the use of BSC-DEA method in measuring organization´s efficiencyNiknazar, Pooria January 2011 (has links)
In today's business environment, organizations try to improve their efficiency in order to have more power in the global competition. This requires capabilities to detect and evaluate the impact of Information Technology (IT) on the organization's efficiency.There are some difficulties in evaluating the impact of IT on the organization‟s efficiency. For example, one should consider many quantitative and qualitative factors in the evaluation process. For solving these kinds of problems, this thesis proposes a methodology to identify the effects of IT investment and the importance of IT related activities on the organization‟s efficiency, within the BSC-DEA model.In the first parts of thesis, the Balanced Scorecard is used as a performance management tool for evaluating an organization‟s efficiency. The four dimensions of the Balanced Scorecard link organization‟s strategies with indicators and help the management establish an integrated efficiency assessment system for evaluation of IT investment. This thesis has studied some shortcoming of BSC for efficiency measurement and argued that DEA has the advantage to fill these shortcomings of BSC and to better evaluates impacts of IT on the organization's efficiency.In the Second part of this thesis, I have shown that the DEA model generates one single efficiency figure in multi-input and multi-output situations. DEA performs the optimization analysis on each individual unit (DMUs) and generate relative efficiency value of each DMU. In this way, the integrated BSC-DEA model is constructed. For a better explanation of proposed BSC-DEA model, I presented and analyzed an example in the final part of the thesis.The presented model has two major benefits in subjected area:Firstly, It Combines two well-established managerial methodologies and proposes a new approach to evaluate IT effects on organizations. This approach uses “BSC” as a comprehensive framework for defining evaluation criteria with regard to IT investment and uses “DEA” as a nonparametric technique for ranking organization performance with those criteria. The second contribution is that with the comprehensive view which BSC gives us and with efficiency measure that DEA calculates, we can have a dependent variable to study how and why some organizations use IT better than others. / Program: Magisterutbildning i informatik
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Análise das técnicas de fronteira na mensuração da eficiência em bancos: uma meta-análise / Analysis of frontier techniques in measuring the efficiency of banks: a meta-analysisFalsarella Junior, Eduardo 11 December 2014 (has links)
A análise de eficiência bancária é um tema relevante para a maioria das economias, dada a importância deste setor na intermediação de recursos financeiros. Este trabalho lança luz a questão de como são realizadas as análises de eficiência bancaria utilizando técnicas de fronteira. Desta forma traz a aplicação da metodologia de meta-analise em 47 estudos anteriores que aplicam técnicas de fronteira na mensuração de eficiência em bancos. Encontrou-se como principais técnicas de fronteira utilizadas a Análise Envoltória de Dados (DEA) em suas formulações CCR, BCC e SBM e a Fronteira Estocástica. A compreensão da utilização das técnicas, expostas neste trabalho, permeia a revisão bibliográfica das explicações teóricas destas e uma análise estatística da relação com as variáveis: os anos de publicação, as abordagens em bancos, e a orientação para medição da eficiência utilizada, ou seja, se o estudo considerou a técnica de fronteira com orientação a input ou output. Os resultados indicam uma maior tendência de utilização das técnicas DEA BCC, primordialmente orientados à input e nos anos mais recentes DEA SBM sem orientação. / The bank efficiency analysis is an important issue for most economies, given the importance of this sector in the intermediation of financial resources. This work sheds light the question of how are carried out bank efficiency analysis using frontier techniques. Thus provides the application of meta-analysis methodology in 47 previous studies applying frontier techniques in measuring efficiency in banks. It was found as major frontier techniques: Data envelopment analysis (DEA) in their formulations CCR, BCC and SBM and the Stochastic Frontier. To understanding the use of the techniques presented in, this paper go through the literature review of theoretical explanations and a statistical analysis of the relationship with the variables: year of publication, the approaches in banks, and the orientation for measuring the efficiency used, in other words if the study considered the frontier techniques with orientation to input or output. The results indicate a greater tendency to use the techniques DEA BCC primarily oriented input and in recent years DEA SBM without orientation.
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Rozšíření modelů analýzy obalu dat a jejich aplikace v automobilovém průmyslu / Data Envelopment Analysis – extension and application in automotive industrySynková, Rut January 2003 (has links)
The Models of the Data Envelopment Analysis are the instruments for benchmarking of homogenous production units. The first models had been formulated by the end of 70th in the last century and since then have been the subject of interest in the theoretical area as well as in the analytical area. The thesis refers to the models of the Data Envelopment Analysis and its development in the theoretical area. The second goal of the thesis is an application of models of the Data Envelopment Analysis in industrial environment and illustration of its possible use by investment decision. The domestic literature on the area of the Data Envelopment Analysis has not been sufficient. The thesis is therefore mapping the present stage of knowledge in this area and further widens by the Allocation Models, Dynamic Analysis and the questions of non-controlled and imprecise variables. Models, which are formulated in the thesis, where afterwards applied on the data of the foreign companies. The numerical experiments were worked out by the software support for the models of the Data Envelopment Analysis, built in the environment of MS Excel. The main contributions of the thesis are in enlargement of the Dynamic Analysis by the partial continuous dynamic analysis and analysis of Efficiency Stability of the evaluated units. The other contribution is the wide application of the models of the Data Envelopment Analysis for benchmarking the companies, which mainly produce the motor vehicles. The thesis gives the overview of the often used models of the Data Envelopment Analysis as well as of the rarely used models. It discusses the possible solution to the special situations which may occur during the application. The thesis is divided into six chapters which, in typical case, contain next to the theory the illustrative application. The first chapter comprises of the subscription of the basic models of the Data Envelopment Analysis. In the second chapter, there are presented the Super-Efficiency Models and discussed the problems with zero inputs and outputs in these models. The overview of the Allocation Models is in following part. The Dynamic Analysis and analysis of Efficiency Stability are subjects of the fourth chapter. The fifth chapter is dedicated to non-controlled and imprecise variables. The last chapter focuses on application of the models in automotive industry and its possible use of results for estimated development of the evaluated units on Investment markets.
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Avaliação de desempenho, produtividade e eficiência: uma abordagem aplicando a ferramenta análise envoltória de dados DEA na Universida- de Federal do AmazonasOliveira, Nilma Gorette Antonia de 03 July 2012 (has links)
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Previous issue date: 2012-07-03 / The purpose of this research is to apply the methodology of Data Envelopment Analysis - DEA as a tool for evaluating their performance and efficiency of 19 Academic Units of the Federal University of Amazonas (UFAM) for the years 2009 and 2010, showing which academic unit is more productive and efficient, and which unit has lower level of productivity and efficiency. The tool was developed DEA to evaluate the efficiency of organizations whose activities are not aimed at profit or for those that do not exist pre-fixed prices for all inputs and / or all products, and thus an alternative technique to study the efficiency of higher education institutions. Considering that the end product of a higher education institution is to train individuals with critical thinking, qualified to play a role in society, and provide the community with undergraduate and graduate quality, we applied the model of Constant Returns Scale (CCR) with the product orientation. The research was conducted in three stages: the first was considered the evaluation of 14 academic units at headquarters and in the second and third used the evaluation of 19 academic units of the institution. The data used in the study were derived from existing sources at the institution such as: Management Report, PingIFES and Indicators TCU. In 2009, the results show that the 14 academic units assessed 71.43% achieved the level of technical efficiency, whereas in 2010 were 85.71% efficient. In evaluating the 19 academic units, 52.63% were effective in 2009 and 68.42% in 2010. In the case of academic units that have not reached the level of efficiency, the DEA model shown by the results which aspects should be dealt with by the manager to become efficient. The results may help the manager in decision making when defining institutional goals focused on those units that need to become productive and efficient. / A proposta desta pesquisa é aplicar a metodologia Análise Envoltória de Dados DEA como ferramenta de Avaliação de Desempenho e Eficiência das 19 Unidades Acadêmicas da Universidade Federal do Amazonas (UFAM) nos anos de 2009 e 2010, mostrando qual unidade acadêmica é mais produtiva e eficiente, e qual unidade apresenta índice menor de produtividade e eficiência. A ferramenta DEA foi desenvolvida para avaliar a eficiência de organizações cujas atividades não visam lucros ou para àquelas que não existem preços pré-fixados para todos os insumos e/ou todos os produtos, sendo, dessa forma, uma técnica alternativa no estudo da eficiência das instituições de ensino superior. Considerando que o produto final de uma instituição de ensino superior é a formação de indivíduo com senso crítico, qualificado para assumir um papel na sociedade, e oferecer à comunidade cursos de graduação e pós-graduação com qualidade, aplicou-se o modelo Retornos Constantes de Escala (CCR) com orientação ao produto. A pesquisa foi desenvolvida em três etapas: na primeira foi considerada a avaliação das 14 unidades acadêmicas da sede e na segunda e terceira utilizou-se a avaliação das 19 unidades acadêmicas da Instituição. Os dados utilizados na pesquisa foram oriundos de fontes existentes na instituição tais como: Relatório de Gestão, PingIFES e Indicadores do TCU. Em 2009, os resultados mostram que das 14 unidades acadêmicas avaliadas 71.43% atingiram o índice de eficiência técnica, enquanto que em 2010 85.71% foram eficientes. Na avaliação das 19 unidades acadêmicas, 52.63% mostraram-se eficientes em 2009 e 68.42% em 2010. No caso das unidades acadêmicas que não atingiram o índice de eficiência, o modelo DEA mostra através dos resultados quais aspectos devem ser trabalhados pelo gestor para que se torne eficiente. Os resultados obtidos poderão ajudar o gestor na tomada de decisão no momento de definir metas institucionais voltadas para as unidades que precisam tornar-se produtivas e eficientes.
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Modelo de análise de eficiência na administração pública: estudo aplicado às prefeituras brasileiras usando a análise envoltória de dados. / Model of analysis of efficiency in public administration: a study applied to Brazilian town halls, which uses the data envelopment analysis.Aparecido Jorge Jubran 29 September 2006 (has links)
A presente Tese de Doutorado propõe um modelo de análise de eficiência na gestão pública, na qual é focado o desempenho econômico-financeiro das prefeituras brasileiras no cumprimento de suas metas sociais. São considerados como parâmetros para essas análises, dados econômico-financeiros combinados a dados não financeiros; estes relacionados ao cumprimento de objetivos sociais como saneamento básico, longevidade e educação. Neste estudo foi empregada a técnica matemática denominada DEA ? Data Envelopment Analysis, ou Análise Envoltória de Dados, que é uma ferramenta analítica que pode fornecer a identificação das melhores práticas na utilização de recursos colocados à disposição de uma determinada organização e, simultaneamente pode identificar a possível fronteira de eficiência de um grupo de organizações afins, por meio de comparações entre os recursos usados e os resultados obtidos por cada uma delas. Dessa forma, o presente estudo visa a contribuir com o desenvolvimento dos municípios, disponibilizando um modelo para análise e comparação da eficiência na gestão pública, sendo avaliado o desempenho das prefeituras brasileiras, geralmente afetadas pela escassez de recursos. Os resultados alcançados apresentam-se particularmente úteis aos gestores das esferas estadual e federal, pois essas avaliações podem contribuir para: promover uma política de demonstração dos benefícios oferecidos aos usuários dos serviços públicos; implementar o monitoramento e controle sobre as atividades das prefeituras; gerar um modelo de competição entre os gestores municipais podendo assim, servir como um instrumento orientador no planejamento das metas sociais. / This thesis proposes an analysis model of efficiency in public management, which focuses on the economical-financial development of Brazilian town halls while accomplishing their social goals. Economical-financial data combined with non-financial data are the parameters considered for the analysis; the last ones are related to de accomplishment of social goals such as public sanitation, life span and education. A Mathematical technique called DEA, Data Envelopment Analysis, was used in this study; it is an analytical tool, which can supply the identification of the best performances in the use of the resources that are available for a certain organization, and simultaneously, it can identify a possible frontier of efficiency of a group of organizations with similar purposes, through the comparison of the used resources and the resources obtained by each one of them. Therefore, this study aims to contribute to the development of the cities, through the availability of a model of analysis and comparison of efficiency in public management, in which the performance of the Brazilian town halls, normally affected by the scarcity of resources, are evaluated. The results obtained in this research seem to be useful to managers of the state and federal spheres, due to the fact that theses evaluations can: contribute to the promotion of a demonstration of benefits policy for the users of the public services; implement the monitoring and control over the activities of the town halls; generate a model of competition among the cities managers; and finally, it can be a guide-line instrument in the planning of social goals.
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Estrat?gia competitiva no varejo de supermercados brasileiro. Uma an?lise do desempenho das seis maiores redes entre 1999 e 2003 / Competitive strategy on brazilian supermarket retail. Analysis of the performance of the six biggest groups between 1999 and 2003FERREIRA, Marcelo Sales 25 February 2005 (has links)
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Previous issue date: 2005-02-25 / The Brazilian supermarket sector has experienced significant transformation in the last few years, following the economic tendency verified in Brazil and in the world. In a very competitive canary, the strategic movements of the big stores can make the difference between a good and a bad performance, or between the permanency, retreat or development of a competitor in this market. The present work analysis the performance of big competitors acting in the Brazilian supermarket sector, extending this discussion to a strategy approach about competition in the market. Besides a description about the history of Brazilian supermarkets, the objective is to present the main topics of strategy applicable on the segment, with emphasis to market segmentation and the relation between strategy and performance. The perform avaluation used was the methodology of Data Envelopment Analysis (DEA), which analysis the perform of each one, along with various factors, and in a comparative form. An analyze of the different options adopted considering the format of the stores, location, form of development and branding implemented by the six biggest groups of the sector, according of the rank, about 2003, announced by the Brazilian Association of Supermarkets (ABRAS). It is so that, Companhia Brasileira de Distribui??o, called by P?o de A??car, Carrefour, Sonae, Bompre?o, Sendas e Wal Mart have their results between 1999 and 2003 submitted to an analyze including billing, number of stores, number of employees and area available in stores. The methodology permit to identify companies whose perform in the period figure under the average of the conjunct of leaders of the rank. By the other side, is possible to find the supermarket s companies with the best results, whose competitive strategy could be seen as model. / O setor de supermercados no Brasil tem apresentado significativas mudan?as nos ?ltimos anos, acompanhando as tend?ncias econ?micas verificadas no Brasil e no mundo. Em um cen?rio de alta competitividade, os movimentos estrat?gicos das grandes redes podem fazer a diferen?a entre um desempenho bom ou ruim, ou entre a perman?ncia, retirada ou crescimento de um competidor nesse mercado. O trabalho faz uma an?lise de desempenho dos grandes competidores atuantes no mercado brasileiro de supermercados, estendendo essa discuss?o at? uma abordagem estrat?gica sobre a competitividade no setor. Al?m de um pequeno hist?rico do desenvolvimento dos supermercados no Brasil, o objetivo ? apresentar os principais t?picos de estrat?gia aplic?veis ao segmento em estudo, com destaque para a segmenta??o de mercado e a rela??o entre estrat?gia e desempenho. A avalia??o de desempenho utilizada foi a metodologia de an?lise envolt?ria de dados (DEA), que busca analisar cada empresa escolhida em um conjunto de fatores e de forma comparativa. Faz-se uma an?lise das diferentes op??es adotadas quanto ao formato de lojas, localiza??o, forma de crescimento e posicionamento de marcas por parte das seis maiores redes apontadas pelo ranking referente ao ano de 2003, divulgado pela Associa??o Brasileira de Supermercados (ABRAS). Assim, Companhia Brasileira de Distribui??o, conhecida como P?o de A??car, Carrefour, Sonae, Bompre?o, Sendas e Wal Mart t?m seus resultados de 1999 a 2003 submetidos ? an?lise, incluindo faturamento, n?mero de lojas, n?mero de funcion?rios e ?rea de venda total. A metodologia possibilita identificar redes cujo resultado no per?odo encontra-se abaixo da m?dia do conjunto daquelas situadas no topo do ranking. Por outro lado, tamb?m ? poss?vel encontrar as empresas de supermercado com os melhores ?ndices, cuja estrat?gia competitiva poderia servir de modelo.
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Market structure in the Container Liner Shipping Industry : an analysis of the maritime network, port efficiency and competition / Structure de marché du secteur du transport maritime de lignes régulières : une analyse du réseau maritime, de l'efficacité portuaire et de la concurrenceKutin, Nikola 29 September 2018 (has links)
La présente thèse a pour ambition d’évaluer la structure de marché du transport maritime de lignes régulières, en particulier au regard de l’intégration maritime au sein de l’ASEAN. Les problématiques principales abordées dans le cadre de ce travail sont liées aux déterminants fondamentaux des taux de fret, à la connectivité maritime, à l’efficacité portuaire et à la compétition sur les routes maritimes. Les analyses reposent sur l’utilisation d’outils méthodologiques précis tels que les modèles Markov-Switching Vecteur Autorégressifs, la Théorie des graphes, l'Analyse d'enveloppement des données, l'Analyse en composantes principales et le partitionnement de données. Les résultats permettent d’identifier trois cycles économiques entre 2003 et 2017, et montrent que le développement de la flotte a eu des effets négatifs non négligeables sur les taux de fret. L’étude illustre que le classement portuaire change en fonction des différents coefficients de centralités. Les résultats de l’analyse de la modularité confortent l’intuition d’une bonne connectivité maritime intra-ASEAN. De plus, le réseau maritime de l’ASEAN possède des attributs similaires aux flux d’échanges commerciaux. Cette analyse de l’intégration maritime régionale est complétée par une étude plus approfondie permettant de visualiser les ports les plus efficaces de la communauté. Une dernière analyse de la compétition sur les routes maritimes met en avant les trajets sur lesquels le nombre d’entreprises en concurrence est le plus élevé. Au final, la thèse permet de mieux comprendre comment est organisé le transport de conteneurs au niveau mondial et régional, et comment s’effectue l'intégration maritime de l’ASEAN dans la chaîne d'approvisionnement mondiale. / This dissertation aims to analyze the structure and the evolution of the Container Liner Shipping Industry by paying particular attention to the maritime integration of ASEAN member states. The factors behind freight rates, maritime connectivity, port efficiency and competition on maritime routes are the central topics of research. Methodological tools such as Markov-Switching Vector Autoregressive Approach, Graph Theory, Data Envelopment Analysis, as well as Principle Component Analysis and Cluster Analysis are employed. The findings from the research show that between 2003 and 2017 three economic cycles occurred and that fleet development had the most profound negative impact on freight rates. The Network Analysis of 153 ports confirms a hub-and-spoke nature of the shipping network. The study illustrates that port rankings change according to different centrality measures. It also demonstrates that ASEAN member states form a cluster of interconnected ports, and their shipping network has the same features as the intra-regional country exports. To complete the analysis of ASEAN maritime integration, this research outlines the most efficient ports within the community and the optimum container handling capacity. Competition on maritime routes, with respect to the country and region of origin and the destination, is also evaluated by highlighting the most concentrated routes in terms of number of competing firms. Moreover, the findings of this dissertation provide key answers to understanding how the industry is organized at global and regional levels, and the extent of maritime integration of the ASEAN region within the global supply chain.
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