This article discusses the structure of the electricity supply. This system mainly consists of three subsystems: the generation, transmission and distribution of electricity. Each system is comprised of different features like its regulation. Given the above, the author tells us the Peruvian case, on the body called the Committee of Economic Operation of the System (COES). / El presente artículo trata sobre la estructura de la provisión de electricidad. Este sistema consta principalmente de tres subsistemas: la generación, la transmisión, y la distribución de electricidad. Cada sistema está conformado por diferentes características al igual que su regulación. Ante lo mencionado, el autor nos comenta el caso peruano, sobre el organismo llamado Comité de Operación Económica del Sistema (COES).

Throughout the decade of 1990, Peru went through a process of liberalization and privatization, a process that was reflected on the mechanism of provision of utilities in the country.In the present article, the author studies the previously mentioned process focusing in the power sector, analyzing it from the Law on Electric Concessions reforms and focusing on its commercial function. He also offers a critical and descriptive overview, including the advantages and disadvantages of the Peruvian model. / A lo largo de la década de 1990, el Perú atravesó un proceso de liberalización y privatización, fenómeno que se reflejó en el mecanismo de prestación de servicios públicos en el país.En el presente artículo, el autor estudia dicho proceso centrándose en el sector eléctrico, analizándolo básicamente a partir de las reformas de la Ley de Concesiones Eléctricas y concentrándose en su función comercial. Asimismo, ofrece un panorama crítico y descriptivo, incluyendo las ventajas y desventajas del modelo peruano.

Made available in DSpace on 2014-12-17T15:37:23Z (GMT). No. of bitstreams: 1 CarolinaHT.pdf: 827980 bytes, checksum: a107e08846f0000f45730f83c3b8e2a4 (MD5) Previous issue date: 2007-09-28 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Synchronism is the efetivation of the same behavior at the same time by two or more individuals. In cetology only from 2000 we verify an increasing of efforts for studies of synchronic behaviors. The synchronism in cetaceans was reported for a variety of contexts, including feeding, socializing, parental care, while resting, traveling and play, during afilliation, in sexual behaviour and possible while teaching. The synchronism in behavior is influenced by environmental factors and can be modified during stress situations such as the presence of boats. The aim of this study is to explore behavior synchronism presented by the estuarine dolphin (Sotalia guianensis) in Pipa, Rio Grande do Norte state, Northeastern Brazil. A total of 414 hours of observation during the year 2006, using scan sampling method, from a land based sighting was conducted. Analyses were conducted in four steps. Firstly, we determined the pattern of activity of the groups within the bay, testing for the influence of bay configuration before and after rains periods on the activity of animals. Analyses show that forage occurs more frequently after the rainy period, but there was no change in the number of individuals or spatial cohesions between them. Secondly, we analysed the influence of turism boat traffic on the behavior of animals. We verified no changes on the bahavior of animals during the presence of boats. Finally, we tested seven hypotheses regarding the ecological and social dynamics of synchronic behavior. Environmental aspects were considered the main influence for the synchronism, no influences of age, and more selective exihibition of synchronic breathing in feeding and social displays were observed during the study period / Sincronismo ? a efetiva??o ao mesmo tempo de um determinado comportamento por dois ou mais indiv?duos. Nos cet?ceos, os comportamentos realizados de forma sincr?nica s?o pouco estudados, e somente a partir de 2000 verifica-se um maior esfor?o na cetologia para investiga??o deste sincronismo comportamental. O sincronismo em cet?ceos tem sido relatado para uma variedade de contextos incluindo alimenta??o, socializa??o, cuidada parental, enquanto descansam, viajam e brincam, durante a afilia??o, no comportamento sexual e possivelmente enquanto ensinam. O sincronismo de comportamento ? influenciado por vari?veis ambientais e pode modificar-se em resposta a situa??es estressantes como o tr?fego de embarca??es. Este estudo visa caracterizar o sincronismo de comportamento efetivado pelo boto cinza (Sotalia guianensis) na praia de Pipa/RN. Para tanto foram realizadas um total de 414h de observa??o durante o ano de 2006, com a varredura como m?todo de registro. Para a an?lise algumas etapas e objetivos espec?ficos foram determinados. Primeiramente, foi determinado o padr?o de atividades dos grupos que freq?entaram as enseadas na ?poca do estudo, verificando poss?veis diferen?as correlacionadas ? enseada e ao per?odo do ano. As an?lises mostraram que ocorreu maior forrageio no per?odo ap?s as chuvas, mas n?o houve modifica??o no n?mero de indiv?duos ou coes?o entre os mesmos. Em seguida, analisamos a influ?ncia do turismo de observa??o de golfinho sobre o comportamento geral (or?amento de atividades e coes?o entre os indiv?duos) e sincr?nico dos animais. Foi verificado que n?o houve influ?ncia do barco no comportamento dos golfinhos. Por fim, testamos sete hip?teses acerca da din?mica ecol?gica e social do sincronismo comportamental. Destacou-se a influ?ncia de fatores externos (ambientais) na apresenta??o do sincronismo, a aus?ncia de influ?ncia da faixa et?ria, e a exibi??o mais seletiva (individualizada) de respira??o sincr?nica em forrageio e socializa??o, dado o menor n?mero de indiv?duos que apresentam este sincronismo respirat?rio

Thesis (MTech(Environmental Health)--Cape Peninsula University of Technology, 2011 / Coke ovens may occur in the aluminium, steel, graphite, electrical, and construction industries. In the work area coke-oven workers may be exposed to various chemical compounds. Polycyclic aromatic hydrocarbons (PAHs), as human carcinogen, are primary compounds in coke oven emissions (COEs) generated in the coking process. Coke oven workers are often exposed to PAHs and can lead to a variety of human diseases.The primary routes of potential human exposure to coke oven emissions are inhalation and dermal contact. Occupational exposure may occur during the production of coke from coal, or while using coke to extract metals from their ores to synthesize calcium carbide, or to manufacture graphite and electrodes. Workers at coking plants and coal tar production plants, as well as the residents surrounding these plants, have a high risk of possible exposure to coke oven emissions.It is known that coke production could be carcinogenic to humans (Group-1) by IARC. There has been sufficient epidemiological evidence suggesting an etiological link between carcinogenic polycyclic aromatic hydrocarbon (PAHs) exposure and lung cancer risk among coke-oven workers. Lung cancer among coke-oven workers has been classified as one of the eight prescribed occupational cancers in China, and its incidence rate was about 10 times that of the general population. Therefore, lung cancer of coke-oven workers is still a critical issue in the field of prevention and control of occupational cancers in China.This thesis explores the various exposure levels of workers to PAHs at a steel plant in China. The measurement will focus on the exposure difference of personal sampling among workers in selected job classifications given the job descriptions and the coking process. The Benxi Steel Industry in Liaoning province of China (BXSI) was selected as the research location. Liaoning province is in the North of China and the location of various heavy industries in China. The measurements will be done two separate coke ovens in Benxi Steel Industry. One new coke oven was built in the 90's last century (coke oven N) and the other older coke oven was built in the 1940's in last century (coke oven O). In this research, the total number of employees that were selected in the sample for both coke ovens are 64 samples included 54 coke oven exposure workers and 10 non-exposure administrative workers working at the plants.

Governments around the world have pursued ICT based initiatives including the provision of infrastructure to assist regional areas to develop economically (Beckinsale et al. 2006). There has been considerable interest in exploiting ICT to develop high technology clusters and support innovative networks (Lawson & Lorenz 1999). However, these initiatives have met with mixed success. It is clear that such development depends on more than providing appropriate technology Attention to social and organisational factors is crucial if regional areas are to realise the potential of ICT as a tool for regional development (Gengatharen & Standing 2005). It is important to understand the nature of business networking as well as the perspective of those participating in such networks if successful initiatives are to be established. The aim of this research is to identify how ICT can be used for knowledge sharing among businesses in regional areas and how the online networks through which knowledge is shared can contribute to the development of the region. This research investigates the question of what value small businesses in those regions derive from knowledge sharing networks using ICT. It also seeks to identify the value creation potential of those networks for their region. Previous research has shown that large organisations have achieved significant value from virtual communities of practice (VCoPs) as a structure for sharing knowledge and supporting innovation (Wenger 2004). The concept of Communities of Practice and Virtual Communities of Practice provided a useful point of departure for this research. The investigation comprised interpretive case studies of two Australian regional areas and their local business networks which incorporated SMEs in a variety of industries. Each case study was conducted in three stages. First, semi-structured interviews were conducted with regional economic development leaders. Second, 192 small and medium business owners were surveyed about their business activities and their participation in local business networks. Third, in-depth interviews were conducted with 23 small business owners to gain a richer understanding of their participation in knowledge-sharing networks and the value they realised or anticipated from various knowledge-sharing activities. A combined analysis of the two cases was conducted as well as the individual analyses. The research adopted a modified Structured Case method (Carroll & Swatman 2000). The analysis of the two case studies revealed: a.) There was a significant difference between the majority of SMEs who traded within the region and those trading largely beyond the region. The latter’s more proactive online sharing knowledge and seeking of business opportunities would enable them to access most value from VCoEs. b.) The participating SMEs operated in a number of industries and what they had in common was an interest in improving their enterprises. Consequently they used their regional networks which were not aligned to any one industry to make connections and share knowledge. They did not necessarily seek to access specific information. c.) A necessary prerequisite of VCoEs is having vibrant CoEs where face-to-face interaction enhances the development of trust and social capital. This appeared as an important factor facilitating the move to incorporate online knowledge sharing. d.) Younger businesses appeared to gain the most value from knowledge sharing in CoEs as they were using their networks to determine how to grow their firm. e.) The value of VCoEs to the SME participants is primarily in their general connection to other businesses in the region. Since the participants operate in a number of industries, what they have in common is an interest in their enterprises. The main value appears to come from the potential of the VCoEs to add to this connection and to social capital. This study found that successful management of VCoEs must: i) Ensure the network website is actively used by members before attempting to incorporate online knowledge sharing. ii) Monitor and stimulate online forum interaction rather than rely on interaction to occur naturally. iii) Not rely on email as a mechanism for stimulating knowledge sharing. Email is seen as more appropriate for formal documentation than for candid exchange of views. The concept of virtual communities of practice was found to be somewhat inappropriate for the diverse SMEs in the regional networks. Because of their diversity, they do not necessarily see value in sharing knowledge about practice but they do see value in sharing more general information and in providing support, connection and ideas that facilitate the strategic direction of their business. To address this issue, the concept of virtual communities of enterprise (VCoEs) is proposed as recognition of what the participating SMEs had in common: an interest in their individual businesses as part of the region. The original contribution of this research consists of its identification of the issues in linking SMEs across industries. It provides new insights on the business practices of regional SMEs and developed the concepts of Community of Enterprise (CoE) and Virtual Community of Enterprise (VCoE) to capture the special nature of knowledge sharing in regional multi-industry business networks. New perspectives are revealed on the ways that value could be derived from knowledge sharing by these regionally networked SMEs, as such it adds to the body of knowledge in an area where there has been little systematic investigation. This research reinforces the importance of social capital as an essential pre-requisite for accessing the value of intellectual capital in regions. Social capital emerges as vital when establishing and maintaining face-to-face knowledge sharing in regional networks and a necessary pre-condition for successfully establishing online knowledge sharing. Trust is a key factor and this research extends understanding of the role of social capital and the importance of trust in regional networks and online interaction. Its findings have significant implications for the development and management of CoEs and VCoEs as it outlines the key elements that need to be addressed when establishing and maintaining them, the appropriate applications for this context and the issues involved in management of the networking and online contexts. These findings not only increase our understanding of the management dynamics of online networks, they can also provide guidance to those seeking to establish successful VCoEs.

Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2017-03-24T17:26:42Z No. of bitstreams: 1 HENRIQUE REZENDE DE CASTRO.pdf: 3998674 bytes, checksum: 512f0552445e945597fd7f2a5cfde508 (MD5) / Made available in DSpace on 2017-03-24T17:26:42Z (GMT). No. of bitstreams: 1 HENRIQUE REZENDE DE CASTRO.pdf: 3998674 bytes, checksum: 512f0552445e945597fd7f2a5cfde508 (MD5) Previous issue date: 2017-02-08 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Metropolitan territories constitute, in the world urban system, fundamental support for the capitalist mode of production and accumulation. Metropolitan management, whose main agent is the State, appears as an important tool to exercise control over the land use planning of such territories, since the state political institutions - government and public administration - would operate under permanent pressure of the interests of capital. Based on this premise, it is assumed that a highly coercive management model would prevail in the sense of centralizing decision by the state apparatus and imposing an agenda of public policies that would favor the production and appropriation of the territory by economic agents. In order to make possible a classification of the existing types of metropolitan management, an analysis instrument was created based on a referential frame with the different types according to the characteristics of the political process of the management. Two case studies were then selected for application of the proposed methodology: the management of the Metropolitan Area of Lisbon, in Portugal, and the metropolitan regions of the state of S?o Paulo, both chosen for the particularities they present in different contexts and for the possibility of comparing the types found. Based on these cases, the aim was to demonstrate the tendency to prevail the coercive model in the contemporary metropolitan management, to the detriment of a territorial cohesion model, which would operate towards a more democratic management, with an agenda based on the reduction of socioeconomic inequalities, which are expressed more severely in the metropolitan territories. / Os territ?rios metropolitanos constituem, no sistema urbano mundial, suporte fundamental para o modo de produ??o e de acumula??o capitalista. A gest?o metropolitana, cujo principal agente ? o Estado, surge como importante ferramenta para exercer o controle sobre o ordenamento de tais territ?rios, uma vez que as institui??es pol?ticas estatais ? governo e administra??o p?blica ? operariam sob permanente press?o dos interesses do capital. Com base nessa premissa, sup?e-se que prevaleceria atualmente um modelo de gest?o marcadamente coercitivo, no sentido da centraliza??o decis?ria pelo aparelho estatal e na imposi??o de uma agenda de pol?ticas p?blicas que favoreceriam prioritariamente a produ??o e a apropria??o do territ?rio pelos agentes econ?micos. De modo a viabilizar uma classifica??o dos tipos existentes de gest?o metropolitana, criou-se um instrumento de an?lise baseado em um quadro referencial com os diferentes tipos segundo as caracter?sticas do processo pol?tico da gest?o. Foram ent?o selecionados dois estudos de caso para aplica??o da metodologia proposta: a gest?o da ?rea Metropolitana de Lisboa, em Portugal, e das regi?es metropolitanas do estado de S?o Paulo, ambos escolhidos pelas particularidades que apresentam em contextos diferentes e pela possibilidade de compara??o dos tipos de gest?o encontrados. Com base nesses casos, procurou-se ent?o demonstrar a tend?ncia de prevalecer o modelo coercitivo na gest?o metropolitana contempor?nea, em detrimento de um modelo de coes?o territorial, que operaria no sentido de uma gest?o mais democr?tica, com uma agenda pautada pela diminui??o das desigualdades socioecon?micas, que se expressam com maior gravidade nos territ?rios metropolitanos.