The aim of this thesis is to summarize the available knowledge on the occurrence and formation of turbidity in the water supply system and the design and application of methodology for measuring the potential occurrence of turbidity in the water supply. Problems of the current state of the quality of drinking water in public water supply systems, with a focus on the occurrence of cataract formation turbidity legislative change indicators of drinking water in the Czech Republic and abroad, and potential methods of measuring turbidity is discribed in the first part of the thesis. In the second part of the paper is a methodology for measuring the potential of turbidity in the water supply network. The methodology is applied in the case study Hrbová pressure zone, which is part of the distribution network of city Vsetin. The case study of the thesis is a statistical analysis and mathematical model of consumption of pressure zone Hrbová.

As redes de distribuição constituem importantes infra-estruturas por serem responsáveis pelo abastecimento de água à população. Dessa maneira, tanto o projeto, como a operação e a manutenção dessas infra-estruturas devem ser eficientes, visando manter a sustentabilidade do recurso natural distribuído através das mesmas. Devido à idade das redes, pressões excessivas nos condutos e outros fatores, as perdas por vazamento representam, nos dias de hoje, grande parte de toda água bombeada e tratada quimicamente para o consumo populacional. Com o objetivo de minimizar essas perdas, este trabalho visa a determinação dos parâmetros do modelo hidráulico para sub-setores da cidade de São Carlos, onde as perdas por vazamentos mostram-se expressivas. Os referidos parâmetros foram determinados através do modelo inverso de minimização dos desvios entre dados de campo observados e valores simulados por modelo hidráulico, usando algoritmos genéticos (AGs). O estudo constitui parte integrante do projeto intitulado \"controle operacional em subsistema urbano de distribuição de água\", apoiado pelo FINEP, em andamento. / The water supply networks are very important structures for human consumption. This way, the project as well as the operation and maintenance of such systems must be efficient, focusing on keeping the sustainability of this natural resource. Due to the age of the networks, excessive pressure inside the pipes and other factors, leakage nowadays represents a considerable loss of the total pumped and chemically treated water which is to be supplied to the population. Trying to minimize theses losses, this study sets out to determine the parameters for the pressure x leakage model, applying it to sub-sectors of São Carlos city network, SP, where leakage represents a considerable amount. The referred parameters determination is realized through the inverse minimization model of differences between data observed in field and those simulated values by a hydraulic model, using genetic algorithms (GAs).

As redes de distribuição constituem importantes infra-estruturas por serem responsáveis pelo abastecimento de água à população. Dessa maneira, tanto o projeto, como a operação e a manutenção dessas infra-estruturas devem ser eficientes, visando manter a sustentabilidade do recurso natural distribuído através das mesmas. Devido à idade das redes, pressões excessivas nos condutos e outros fatores, as perdas por vazamento representam, nos dias de hoje, grande parte de toda água bombeada e tratada quimicamente para o consumo populacional. Com o objetivo de minimizar essas perdas, este trabalho visa a determinação dos parâmetros do modelo hidráulico para sub-setores da cidade de São Carlos, onde as perdas por vazamentos mostram-se expressivas. Os referidos parâmetros foram determinados através do modelo inverso de minimização dos desvios entre dados de campo observados e valores simulados por modelo hidráulico, usando algoritmos genéticos (AGs). O estudo constitui parte integrante do projeto intitulado \"controle operacional em subsistema urbano de distribuição de água\", apoiado pelo FINEP, em andamento. / The water supply networks are very important structures for human consumption. This way, the project as well as the operation and maintenance of such systems must be efficient, focusing on keeping the sustainability of this natural resource. Due to the age of the networks, excessive pressure inside the pipes and other factors, leakage nowadays represents a considerable loss of the total pumped and chemically treated water which is to be supplied to the population. Trying to minimize theses losses, this study sets out to determine the parameters for the pressure x leakage model, applying it to sub-sectors of São Carlos city network, SP, where leakage represents a considerable amount. The referred parameters determination is realized through the inverse minimization model of differences between data observed in field and those simulated values by a hydraulic model, using genetic algorithms (GAs).

Made available in DSpace on 2010-04-20T20:51:37Z (GMT). No. of bitstreams: 3 127149.pdf.jpg: 19970 bytes, checksum: d44587155e9d0e9a1e370ad557eb0d90 (MD5) 127149.pdf: 1209153 bytes, checksum: 525716fa9b2ef7bd90e46ad7dc1afc08 (MD5) 127149.pdf.txt: 317056 bytes, checksum: 90632cb00f3a46fde95dd8cbb9af8f58 (MD5) Previous issue date: 2004-06-03T00:00:00Z / No Brasil estima-se que a participação real do agronegócio é mais de um terço do PIB nacional. A cadeia da soja é responsável por uma contribuição expressiva, sendo o Brasil um dos maiores produtores e exportadores do mundo e ainda com previsão de crescimento. A importância deste setor e o crescimento do agronegócio soja permitem acreditar que haverá uma expansão de participantes e aumento de complexidade no segmento. O atual ambiente de competitividade e exigência de flexibilidade torna necessária uma abordagem sistêmica, que olha para a cadeia de suprimentos como uma entidade única que articula as estratégias dos seus diferentes atores, orientando-os para o cliente. Gestão de Redes de Suprimentos, extensão de Gestão de Cadeias de Suprimentos, envolve ligações laterais, cadeia reversa e trocas mútuas, adotando uma perspectiva mais estratégica que contempla aquisição de recursos, desenvolvimento, transformação e gestão de relacionamentos. O propósito desta pesquisa é o de contribuir tanto para o acúmulo de conhecimento acadêmico, como para a melhoria de práticas no mundo empresarial que reflitam no avanço do setor agronegócio e do país. Para tal é desenvolvida uma análise e síntese da literatura relevante de Relacionamentos em Redes de Suprimentos que resulta no quadro dos principais elementos caracterizadores de relacionamentos e respectivas definições. É ainda proposto um modelo de encadeamento desses elementos, por meio de um diagrama, que pretende explicar, de acordo com essa literatura, como devem ser desenvolvidos e mantidos relacionamentos em rede. Por meio de um estudo de caso, tendo como unidade de análise as redes de agronegócio, especificamente o caso da soja, foi testado esse modelo recorrendo-se a entrevistas com 5 empresas. O enfoque principal incide nas questões de estratégias de desenvolvimento e manutenção de relacionamentos entre atores da rede selecionada. Os resultados da pesquisa mostram que há espaço para estudos desta natureza ao confirmarem que podem ser alcançados benefícios por meio da utilização de estratégias que contemplem Gestão de Relacionamentos em Redes de Suprimentos. / It is estimated that in Brazil the real participation of the agribusiness is more than one third of the national “PIB”. The soy bean segment is responsible for an expressive contribution, being Brazil one of the biggest producers and exporters and still remaining with a growth forecast. The relevance of the sector and the growing of the soy agribusiness allow to believe in an expansion of participants and therefore an increase of complexity in the segment. The actual environment of competition and the exigency of flexibility demand a systemic approach that looks at the supply chain as an unique identity which articulates the strategies of its different actors towards the final costumer. Supply Networks Management, extension of Supply Chain Management, involve lateral links, reverse loops, two-way exchanges, adopting a broad strategic view concerning resource acquisition, development, transformation and relationships’ management. The purpose of this study is to contribute for both academic knowledge and company practices that reflect the advance of the agribusiness sector and the country. For such purpose it is developed an analysis and synthesis of the relevant literature concerning Supply Network Relationships, which results in a panel of the principal elements and definitions. Moreover, it is suggested a model for the order of such elements trough a diagram which attempts to explain how relationships are developed and maintained. A case study, having as analysis unit the agribusiness network, specifically the soy case, tested that model by applying interviews in five companies. The main issue is the strategies of developing and maintaining the relationships between actors in the selected network. The results show that there is space for studies of this nature by confirming that benefits can be reached when Supply Network Relationships Management is used as strategic competence.

Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2018-08-13T11:23:42Z No. of bitstreams: 2 Dissertação - Luciano de Oliveira - 2018.pdf: 5027134 bytes, checksum: a0469fdd822b10eda9e451f4b9c889b2 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-08-13T11:51:19Z (GMT) No. of bitstreams: 2 Dissertação - Luciano de Oliveira - 2018.pdf: 5027134 bytes, checksum: a0469fdd822b10eda9e451f4b9c889b2 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-08-13T11:51:19Z (GMT). No. of bitstreams: 2 Dissertação - Luciano de Oliveira - 2018.pdf: 5027134 bytes, checksum: a0469fdd822b10eda9e451f4b9c889b2 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-07-13 / The chlorination process is the most used to promote disinfection of water intended for human consumption. During the course of chlorinated water in the supply systems, the concentration of free residual chlorine (FRC), whose reaction rate depends on the characteristics of the natural water, occurs. In this work, we studied the decay of the FRC concentration related to the reactions in the liquid mass in two types of water, of subterranean and superficial origin, with different concentrations of organic matter, with the perspective of the influence of the water travel time, dependent on consumption scenarios in real distribution networks, whose supply modules are characterized by low population density and that operate under the initial demand conditions predicted in the projects. The effect of temperature and total organic carbon on the values of mass decay kinetic constants (k b ), used in mathematical models that simulate water quality, was considered. The results showed that the variation of the kb values is directly proportional to the water temperature and the TOC. For initial concentrations close to 1.00 mg.L -1 , the values of the kinetic constants for waters from surface water sources maintained in the temperature ranges of 20 to 21 °C and 30 to 31 °C were respectively 0.0888 day -1 and 0.1200 day -1 for samples collected at the ETA filter output of the DAIAsystem and TOC value of 0.4798 mg.L -1 and equal to and 0.1680 day -1 and 0.3024 day -1 for the samples collected at the filter outputs of the Piancó and TOC system ETA of 0.8750 mg.L - . In samples of groundwater with TOC of 0.1740 mg.L -1 , maintained at the same temperature 1 ranges, the kinetic coefficients were 0.0264 day -1 and 0.0480 day -1 , respectively. Experiments for temperature between 30 and 31 °C and near test duration showed a significant difference in chlorine decay behavior in filtered water samples collected at conventional treatment plants, which showed a residual chlorine loss percentage of 64.81% in relation to the initial concentration of 1.08 mg.L -1 of disinfectant (ETA DAIA) and 33.65% in relation to the initial concentration of 1.05 mg.L -1 of disinfectant (ETA Piancó). Raw water samples from the underground spring lost 14.33% of the initial concentration of 1.04 mg.L -1 . The travel times for the most critical nodes and the minimum disinfectant concentrations at the entrance of the supply modules to comply with the legislation were 40 hours and 0.27-0.28 mg.L -1 for the distribution networks of the condominium Valley of the Birds and 144 hours and 0.30-0.36 mg.L -1 for the condominium Terras Alphaville. / O processo de cloração é o mais utilizado para promover a desinfecção das águas destinadas ao consumo humano. Durante o percurso da água clorada nos sistemas de abastecimento ocorre o decaimento da concentração do cloro residual livre (CRL), cuja taxa de reação depende das características da água natural. Neste trabalho estudou-se o decaimento da concentração do CRL relacionado às reações na massa líquida em dois tipos de águas, de origem subterrânea e superficial, com diferentes concentrações de matéria orgânica, com aperspectiva da influência do tempo de percurso da água, dependente de cenários de consumo em redes de distribuição reais, cujos módulos de abastecimento são caracterizados pelo baixo adensamento populacional e que operam nas condições iniciais de demanda previstas nos projetos. Considerou-se o efeito da temperatura e do carbono orgânico total sobre os valores das constantes cinéticas de decaimento em massa (k b ), utilizadas nos modelos matemáticos que simulam a qualidade da água. Os resultados mostraram que a variação dos valores de k b é diretamente proporcional à temperatura da água e ao COT. Para concentrações iniciais próximas a 1,00 mg.L -1 os valores das constantes cinéticas, para águas provenientes de mananciais superficiais mantidas nas faixas de temperatura de foram, respectivamente, iguais a 0,0888 20 a 21 °C e 30 a 31 °C, dia -1 e 0,1200 dia -1 para amostras coletas na saída do filtro da ETA do sistema DAIA e valor de COT de 0,4798 mg.L -1 e iguais a e 0,1680 dia -1 e 0,3024 dia -1 para as amostras coletas na saídas do filtro da ETA do sistema Piancó e COT de 0,8750 mg.L -1 . Em amostras de água subterrânea com COT de 0,1740 mg.L -1 , mantidas nas mesmas faixas de temperatura, os coeficientes cinéticos foram iguais a 0,0264 dia -1 e 0,0480 dia -1 , respectivamente. Os experimentos para temperatura entre 30 e 31 °C e tempos próximos de duração dos testes demonstraram diferença significativa no comportamento do decaimento do cloro em amostras de água filtrada coletadas nas estações de tratamento convencional que apresentaram porcentagem de perda de cloro residual de 64,81 % em relação à concentração inicial de 1,08 mg.L -1 de desinfetante (ETA DAIA) e 33,65 % em relação à concentração inicial de 1,05 mg.L -1 de desinfetante (ETA Piancó). Amostras de água bruta do manancial subterrâneo perderam 14,33 % da concentração inicial de 1,04 mg.L -1 . Os tempos de percurso para os nós mais críticos e as concentrações mínimas de desinfetante na entrada dos módulo de abastecimento para atendimento à legislação foram iguais a 40 horas e 0,27-0,28 mg.L -1 para as redes de distribuição do condomínio Vale dos Pássaros e 144 horas e 0,30-0,36 mg.L -1 para o condomínio Terras Alphaville.

The rapid increase in the adoption of global sourcing practices that took place in 1980’s led to significant transformations in traditional value chains, which were encompassed by single, vertically integrated organizations, and became globally dispersed networks of independent buyers and suppliers, where each of these firms performs specific value-adding activities that will ultimately result in that value chain’s final output. As concerns over the negative social and environmental impacts caused by industrial activity continue their rise to prominence, stakeholders are starting to realize that the changes through which value chain structures underwent have shifted the locus of corporate sustainability from individual focal firms to entire supply networks. This wider scope of stakeholder expectations has, thus, created a necessity for corporate sustainability initiatives to be diffused to all members of the supply network. Chapter one constitutes a theoretical investigation of the strategic relevance of corporate sustainability diffusion in global supply networks for both focal and non-focal firms within global supply networks, as well as the determining factors of a firm’s capacity to diffuse and performance in diffusing corporate sustainability within its supply network? The theoretical contributions of this study are divided into two parts. The first part seeks to establish a more solid cause and effect relationship to explain why firms that are more highly exposed to stakeholder scrutiny (i.e. focal firms) should necessarily face a higher risk of being held responsible for the sustainability-related misconducts of lesser exposed members of the network (i.e. supplier sustainability risk). The first part also proposes an expansion of the dichotomous categorization of corporate sustainability initiatives as either mandatory or voluntary, to add what we termed: semi-voluntary corporate sustainability initiatives. This addition serves to explain why certain firms adopt non-mandatory corporate sustainability initiatives, which apparently destroy shareholder value. We argue that this distinction is important because cases concerning semi-voluntary initiatives are likely to involve higher levels of supplier sustainability risk. In part two of the theoretical development we introduce a theoretical framework to explain the existing heterogeneity among different firms within a supply network in regards to their ability to implement the diffusion of corporate sustainability initiatives in the network (i.e. network dominance) and propose that it results from the interaction among three network-related firm characteristics: relative resource value, resource substitutability, and relative network position. Lastly, we discuss why higher levels of network dominance increase the likelihood that firms will be able to ensure a high level of corporate sustainability diffusion in the network. Chapter two aims at empirically testing a set of hypotheses derived from the propositions put forth in the second part of chapter one’s theoretical development Therefore, it seeks to answer questions, such as, who is responsible for ensuring that all network members meet the necessary corporate sustainability standards in order to adequately fulfill the demands of stakeholders? Why do some firms engage in corporate sustainability and others do not? What contributes to the effective diffusion of corporate sustainability in a supply network? These hypotheses are tested on a sample of 10,728 firms in the automotive sector, linked by 45,044 inter-firm relationships. Strong support for our hypotheses provides both researchers and managers with an interesting discussion of how this emerging business paradigm, where corporate sustainability is becoming the norm and no longer the exception, may have significant implications on how value chains are structured within this sector. / Business Administration/International Business Administration

ABSTRACT EXPLORING THE RELATIONSHIP BETWEEN SUPPLY NETWORK CONFIGURATION, INTER-ORGANIZATIONAL INFORMATION SHARING AND PERFORMANCE By MARCIA DALEY August 2008 Committee Chair: Dr. Subhashish Samaddar Major Department: Decision Science Critical to the success of a firm is the ability of managers to coordinate the complex network of business relationships that can exist between business partners in the supply network. However many managers are unsure on how best to leverage their resources to capitalize on the information sharing opportunities that are available in such networks. Although there is significant research on information sharing, the area of inter-organizational information sharing (IIS) is still evolving and there is limited research on IIS in relation to systemic factors within supply networks. To help fill this gap in the literature, a primary focus of this dissertation is on the relationship between the design of the supply network and IIS. The design of the supply network is characterized by the supply network configuration which is comprised of (1) the network pattern, (2) the number of stages in the supply network, and (3) where the firm is located in that supply network. Four different types of IIS are investigated, herein. These types of IIS are a function of the frequency with which information is shared and the scope of information shared. Type 1 (Type 2) IIS is the low (high) frequency state where only operational information is shared. Similarly, Type 3 (Type 4) is the low (high) frequency state where strategic information is shared. The argument is that the type of IIS varies depending on the configuration of the supply network and that this relationship is influenced by the coordination structure established between firms in the network. The second focus of this dissertation deals with the relationship between IIS and performance. Research findings on the benefits to be gained from IIS have been ambiguous, with some researchers claiming reduced cost in the supply network with IIS, and others finding minimal or no benefits. To add clarity to these findings, the role that uncertainty plays in the relationship between IIS and performance is examined. The thesis presented is that the positive relationship between IIS types and the performance of the supply network is impacted by process uncertainty (i.e. the variability in process outcomes and production times), and partner uncertainty. Social network theory and transaction cost economics provide the theoretical lens for this dissertation. A model is developed and will be empirically validated in a cross-sectional setting, utilizing a sampling frame randomly selected and comprised of supply management executives from various industries within the United States.

La crise de l’eau dans le monde et la pénurie des ressources en eau exigent une bonne gestion de cette précieuse ressource. La bonne gestion passe en premier lieu par un réseau d’adduction d’eau potable fiable avec un faible taux de fuite. Les fuites causées par la rupture des canalisations, phénomène assez fréquent en milieu urbain, s’amorcent sur un défaut dû à la corrosion ou autres. L’amorçage et la propagation de la fissure se fait par fatigue sous l’effet de contraintes engendrées par le passage des véhicules, ou brutalement à cause du phénomène de coup de bélier. La gravité de ces phénomènes dépend de plusieurs paramètres y compris la nature du matériau des conduites. Les matériaux polymères, comme le PEHD, occupent une bonne partie du marché de transport d’eau, grâce à leurs multiples qualités (coût réduit, facilité de pose, flexibilité), notamment dans les réseaux de distribution (réseau secondaire). L’utilisation de ce matériau dans les réseaux d’adduction (aqueducs) est en pleine expansion mais beaucoup moins étudier dans les travaux de recherche. L’objectif de la thèse consiste à étudier le risque de rupture des conduites en polyéthylène haute densité destinée à l’adduction d’eau potable ainsi que leurs résistances au phénomène de coup de bélier. Pour répondre à cette problématique, en premier lieu nous avons caractérisé expérimentalement le comportement mécanique à la rupture des conduites en PEHD. Ensuite, nous avons développé un outil numérique de calcul par élément fini permettant de modéliser la rupture des conduites. À l'issue de cette étude nous avons proposé un modèle semi-empirique reliant la pression d’amorçage d’une fissure à la taille du défaut préexistant ainsi qu’aux dimensions de la conduite. Finalement, nous avons appliqué les outils développés sur un réseau d’adduction d’eau potable existant. Le comportement d’une conduite en PEHD soumise à un phénomène de coup de bélier a été analysé / The water crisis in the world and the shortage of water resources require good management of this precious resource. Good management requires, first and foremost, a reliable drinking water supply system with low leakage rate. Leakage caused by the rupture of pipes, fairly frequent phenomenon in urban areas, initiate from a pre-existing defect in the pipe wall. The initiation and propagation of the crack occur under environmental stress caused by passing vehicles, or it can happen brutally due to water hammer phenomenon. The severity of these phenomena depends on several parameters including the nature of the piping material. Polymeric materials such as HDPE, take a great part of the water transport market, thanks to their many qualities (reduced cost, ease of installation, flexibility), especially in secondary network distribution system. Currently, the use of this material in the supply networks (aqueducts) is booming but less studied in research works. The aim of the present work is to study the failure of high density polyethylene pipes for the supply of drinking water and their resistance to water hammer phenomenon. In order to address this issue, first we have characterized experimentally the mechanical fracture behavior of HDPE pipe. Then, we have developed a finite element calculation tool allowing the modeling of pipes subjected to internal pressure loads. As a result of this numerical study, we proposed a semi-empirical model linking the failure pressure to the size of pre-existing defects as well as the pipe dimensions. Finally, we applied the developed tools on an existing drinking water system. The behavior of HDPE pipe subjected to a water hammer phenomenon was analyzed

Made available in DSpace on 2010-04-20T20:48:37Z (GMT). No. of bitstreams: 3 71040100498.pdf.jpg: 20294 bytes, checksum: 6ecefcc85f0e2b04170ede657782f8dc (MD5) 71040100498.pdf: 4465512 bytes, checksum: 8a4fb7604d12cd82d51a32e4245872fb (MD5) 71040100498.pdf.txt: 415589 bytes, checksum: 3c7c70463c22b7dce924116495f11151 (MD5) Previous issue date: 2008-03-26T00:00:00Z / Globalization, technological, political and social breakthroughs create internal pressure inside the organizations which need to reply by developing its abilities and capacities. Business with focus on the international markets, must face bigger challenges. Even more complex and unstable environment, fluctuation import quotas and other barriers placed in the international commerce made quality stop being a competitive advantage in many industries and become a standard. The development of competitive strategies and supply chain networks are now crucial to survive in this environments. Brazil is one of the biggest world players in food production, specially beans and animal protein. Since 2004, Brazil is the second biggest chicken producer, and the first in exportation. The understanding of the characteristics underlying the supply network might help towards a more efficient orientation. Therefore, general objective of this study is to analyze the competitiveness in the Brazilian exportation agribusiness four poultry, by means of characterization of its supply networks. Moreover, it aims to identify which factors impact more in its success. For such purpose an analysis and synthesis of the relevant literature concerning Supply Networks Management and Agribusiness is developed, as well as the main tendencies and future challenges in the poultry business are researched. A framework resulting from the literature review was used in the multiple case study complying four companies from the exportation business of poultry. Results show that managing coordination, differentiation and reconfiguration, allows knowing the types of networks and verifying their skills to face future tendencies. / A globalização, a desregulamentação, os avanços tecnológicos, políticos e sociais geram pressões internas nas organizações que precisam responder desenvolvendo suas competências e capacidades. Em negócios com foco no mercado internacional, os desafios aumentam. Ambiente ainda mais complexo e instável, interferências dos limites de quotas e outras barreiras colocadas ao comércio internacional fizeram com que a qualidade deixasse de ser um diferencial em muitas indústrias, e passasse a ser um requisito standart obrigatório. O desenvolvimento de estratégias competitivas e a gestão das redes são cruciais para sobreviver nestes ambientes. O Brasil atua como um dos maiores produtores de alimentos do mundo, sobretudo na produção de grãos e proteína animal. Desde 2004, o Brasil é o segundo maior produtor de frango e o primeiro em exportação. O entendimento das características que definem uma rede de suprimentos pode contribuir para uma orientação mais eficiente. Nesse sentido, este estudo tem como objetivo analisar a competitividade da rede agro-exportadora de frango de corte no Brasil, por meio da caracterização das suas redes de suprimentos, identificando os fatores e as atividades que mais impactam no seu sucesso. Para tal é desenvolvida uma análise e síntese da literatura relevante de Gestão de Redes de Suprimentos e Agronegócio especialmente focado no frango de corte para exportação, incluindo as principais tendências e desafios do negócio. Um constructo resultante da revisão serviu de base para a pesquisa empírica desenvolvida por meio de caso múltiplo, contemplando quatro empresas do setor. Os resultados indicam que a gestão da coordenação, da diferenciação e da reconfiguração das redes, permitem acessar os tipos de redes e verificar as suas aptidões para enfrentar o futuro.

Orientador: Paulo Sergio Franco Barbosa / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo / Made available in DSpace on 2018-08-09T08:18:41Z (GMT). No. of bitstreams: 1 Venturini_MariaAliceAmadoGouveia_D.pdf: 5062726 bytes, checksum: 6606d29c93d4c6073273826378c32081 (MD5) Previous issue date: 2003 / Resumo: O abastecimento de água é um fator de extrema importância para o bem estar da sociedade. Muitos sistemas de abastecimento de água vêm apresentando deficiências operacionais, seja pelo elevado incremento na demanda nos últimos anos ou pela falta de manutenção adequada. O aumento da freqüência de interrupções no fornecimento de água tem sido comum, gerando a insatisfação de seus usuários. Altos investimentos são necessários para a reabilitação dos sistemas de abastecimento de água existentes, visando assegurar níveis operacionais adequados, mas as empresas têm recursos financeiros limitados. Justifica-se, deste modo, o desenvolvimento de novas metodologias que visem a reabilitação destes sistemas buscando o funcionamento adequado dos mesmos, dentro de padrões técnicos satisfatórios com custos aceitáveis. Neste contexto, a metodologia proposta almeja estudar alternativas de reabilitação em sistemas existentes, tendo como suporte um simulador de redes de abastecimento (SPERTS). Para considerar os múltiplos aspectos na tomada de decisão sobre as possíveis soluções de reabilitação a adotar utiliza-se a análise multicriterial que então, fornece uma hierarquia das alternativas encontradas em cada caso / Abstract: Water supply is extremely important for the welfare state of society. Many water supply systems have presented operational deficiency due to high increase on the demand or lack of adequate maintenance. The increase of on frequency of the interruption on the water supply has been usual, thus not fulfilling customer expectations for the consumers. High investments are needed to rehabilitate the existing water supply systems aiming at ensuring adequate operational levels. This situation highlights the importance of the development of new methodologies aiming at the rehabilitation of these systems for an adequate operation, within satisfactory technical standard and acceptable costs. Thus, the proposed methodology aims to study rehabilitation alternatives in existing water systems, taking as support a water supply network simulator (SPERTS). In order to consider the multiple aspects on the decision making process about the possible rehabilitation solutions, a multcriterial analysis is used thus, providing an hierarchy of the alternatives found in each case / Doutorado / Recursos Hidricos / Doutor em Engenharia Civil