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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
121

An?lise do licenciamento ambiental como instrumento de pol?tica do meio ambiente no Rio Grande do Norte Per?odo 1992-2003 / Analysis of the ambient licensing as instrument of politics of the environment in Rio Grande do Norte - Period 1992-2003

Sousa, Paulo Moraes de 28 November 2005 (has links)
Made available in DSpace on 2014-12-17T13:57:11Z (GMT). No. of bitstreams: 1 PauloMS.pdf: 1745620 bytes, checksum: 96e4f5600256f8aead9fb5dac6bee00d (MD5) Previous issue date: 2005-11-28 / This analysis on the ambient licensing is based on a research that identifies the fragilities and advances of the application of this instrument of politics of the environment in the ambient politics of the Rio Grande do Norte, in the period of 1992 the 2003. The isolated urban area of B?zios, situated in the City of N?sia Floresta/RN, situated in the eastern coast of the State, where concentrates the boarding of the ambient question as a matter in the Brazilian process of urbanization, over all the institutionalization and implementation of the ambient licensing. They are distinguished in the used methodology in consultation to the diverse involved social segments with the ambient subject in study, the example of the managers, technician and specialists, as well as the application of the legislation and norms techniques, the forms of appropriation of the common wealth and the procedures of ambient licensing of the competent agencies. The results of the research designate that the ambient licensing while instrument of the ambient politics is one of the alternatives more efficient as techniques in the process of sustainable development, since it is beyond the prerogatives to conciliate the activities and enterprises with the conservation of the environmental resources and natural benefits to the societies. In the RN one evidenced progress in the ambient legislation and the instructions techniques, and that the imperfections and limitations in the system of ambient licensing are not directly on to the instruments, but in the implementation of mechanisms of the ambient agencies. This because they do not make use of operational structure to apply in practical and established abilities, as an ambient management, institutional joint and deliberations of the State Counselor for Environment / Esta an?lise sobre o licenciamento ambiental est? fundamentada numa pesquisa que identifica fragilidades e avan?os da aplica??o deste instrumento de pol?tica do meio ambiente na pol?tica ambiental do Rio Grande do Norte, no per?odo de 1992 a 2003. Tem como universo de estudo a ?rea Urbana Isolada de B?zios situada no Munic?pio de N?sia Floresta, litoral oriental do Estado, onde se concentra a abordagem da quest?o ambiental e suas especificidades no processo de urbaniza??o brasileiro, sobretudo a institucionaliza??o e implementa??o do licenciamento ambiental. Destacam-se na metodologia utilizada a consulta aos diversos segmentos sociais envolvidos com o tema ambiental em estudo, a exemplo dos gestores, t?cnicos e especialistas, bem como a aplica??o da legisla??o e normas t?cnicas, as formas de apropria??o do patrim?nio p?blico e os procedimentos de licenciamento ambiental dos ?rg?os competentes. Os resultados da pesquisa assinalam que o licenciamento ambiental enquanto instrumento da pol?tica ambiental ? uma das alternativas t?cnicas mais eficientes no processo de desenvolvimento sustent?vel, visto que desfruta de prerrogativas para conciliar a operacionaliza??o das atividades e empreendimentos impactantes com a conserva??o dos recursos ambientais e naturais em benef?cio das sociedades. No RN constatou-se progressos na legisla??o ambiental e nas instru??es t?cnicas, e que as falhas e limita??es no sistema de licenciamento ambiental n?o est?o diretamente ligadas aos instrumentos, mas na implementa??o de mecanismos por parte dos ?rg?os ambientais nas tr?s esferas do poder. Isso porque n?o disp?em de estrutura operacional para desempenharem na pr?tica suas compet?ncias estabelecidas, notadamente quanto ? gest?o ambiental, articula??o institucional e delibera??es do Conselho Estadual do Meio Ambiente
122

Caracteriza??o s?cio-ambiental do bairro de Felipe Camar?o- Natal/ RN

Bezerril, Sandra Maria de Lima 30 August 2006 (has links)
Made available in DSpace on 2014-12-17T15:55:07Z (GMT). No. of bitstreams: 1 SandraMLB.pdf: 485730 bytes, checksum: 2d9d8cd23c72f730b56737d606b11e82 (MD5) Previous issue date: 2006-08-30 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The rapid growth of the Brazilian cities in the latest years has brought a series of problems regarding housing policies and, therefore, the provision of dwellings for the low-income class people. Following the pattern of other capital cities, Natal has repeated the pattern of urbanization practiced in the country, which concentrates the low-income class inhabitants in specific zones of the city known as peripheries or even in a dwelling place for less-favored classes such as Felipe Camar?o, which is one of ten boroughs belonging to the western administrative zone, a region which has historically received less attention from the public administrators towards infrastructure investments. Based on those aspects, the general objective of this work is to investigate which main social-environmental alterations have resulted from the processes of urbanization and field occupation in that area. The specific objectives are concerned with verifying 1) the process of urbanization and the process of dividing urban soil from the 1960s; 2) the current configuration of the public spaces in the borough; 3) the process of the deprivation of the original landscape characteristics of Environmental Protection Zones; 4) the dynamics of land occupation which are predominant in dune areas; 5) the dynamics of land occupation which are predominant in mangrove areas; 6) and the destruction of green covering on the land with its consequent alteration of the local floristic pattern. The methodology consisted of in-loco visits; the application of questionnaires as community research; a survey of bibliography published by the organisms and institutions in charge of carrying out the city hall s environmental and housing policies; and descriptive statistics of the collected data. Concerning the pattern of occupation which is predominant in the borough, the treatment of space dispensed by the local dwellers has culminated in the emergence and consolidation of environmental alterations which are clearly different from common occurrence in both the building area represented by housing complexes and in the green areas represented by dunes and mangroves. The data show that there was the predominance of the irregular land occupation process over the official housing policy during the population settlement which contributed with a series of frequent and foreseeable problems in the dynamics of urbanization of poverty such as invasions and appropriations of land parcels, the beginning of irregular arrangement of streets, the formation of villages and slums, which are full of self-constructed housing units, and the occupation and degradation of susceptibly fragile environmental areas such as the dune slopes and the mangroves / O r?pido crescimento das cidades brasileiras nos ?ltimos anos trouxe uma s?rie de problemas relacionados com as pol?ticas de habita??o e conseq?entemente com a provis?o de habita??es para as classes de renda baixa. Seguindo o exemplo de outras capitais, Natal repetiu o modelo de urbaniza??o praticado no pa?s, concentrando as popula??es de baixa renda em zonas espec?ficas da cidade classificadas como periferias, ou lugar de habita??o das classes menos favorecidas como ocorre em Felipe Camar?o, um dos dez bairros que integram a zona administrativa oeste, regi?o que historicamente recebeu pouca aten??o por parte dos poderes p?blicos em termos de investimentos em infra-estrutura. Fundamentados nesses aspectos, o objetivo geral deste trabalho ? averiguar quais as principais altera??es s?cio-ambientais decorrentes do processo de urbaniza??o e ocupa??o na ?rea. Constituem-se os objetivos espec?ficos verificar: o processo de urbaniza??o e parcelamento do solo a partir de 1960; a configura??o atual dos espa?os p?blicos do bairro; o processo de descaracteriza??o das Zonas de Prote??o Ambiental; as din?micas de ocupa??o predominantes nas ?reas de dunas e de manguezal e a destrui??o da cobertura vegetal com conseq?ente altera??o do padr?o flor?stico local. A metodologia compreendeu: 1) visitas a campo; 2) aplica??o de question?rios pesquisa comunit?ria; 3) levantamento da bibliografia publicada pelos ?rg?os e institui??es encarregados de executar as pol?ticas de meio ambiente e habita??o no munic?pio; e 4) estat?stica descritiva dos dados coletados. No que se refere ao modelo de ocupa??o predominante no bairro, constatou-se que o tratamento dispensado pelos moradores ao espa?o culminou com o aparecimento e consolida??o de altera??es ambientais distintas de comum ocorr?ncia na ?rea edificada representada pelos conjuntos habitacionais e nas ?reas verdes representadas respectivamente pelas dunas e pelo mangue. Os dados demonstram que durante o povoamento, houve predomin?ncia do processo de ocupa??o irregular sobre a pol?tica oficial de habita??o, colaborando com uma s?rie de problemas freq?entes e previs?veis nas din?micas de urbaniza??o da pobreza como: invas?es e apropria??es de lotes; abertura de arruamentos irregulares; forma??o de vilas e favelas, repletas de unidades habitacionais auto-constru?das e ocupa??o e degrada??o de ?reas de fragilidade ambiental, como as encostas de dunas e os manguezais
123

Proposta de um sistema de seguran?a eletr?nica predial

Casillo, Danielle Simone da Silva 12 May 2004 (has links)
Made available in DSpace on 2014-12-17T14:55:17Z (GMT). No. of bitstreams: 1 DanielleSS_da_capa_ate_pag_13.pdf: 7780699 bytes, checksum: dd280d1a1b7808173600cb1ec29d5cbc (MD5) Previous issue date: 2004-05-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This work presents a suggestion of a security system of land automation having as objective main the creation of a system capable from easy method, supervise the installations of a building with the goal to preserver security personal and patrimonial necessities, aim at portability low cost and use easiness. Was designed an alarms central and access controller that has digital and analogical inputs for sensors and outputs for buzzer, telephonic dialing and electronic lock. The system is supervised by software that makes solicitations of information to the alarms central through the one computer's serial port (RS-232). The supervisory software was developed in platform LabVIEW with displays the received data on a graphical interface informing the sensors' current states distributed in the building and system events as alarns occurrences. This system also can be viewed through the Internet for people registered by the land security's system administrator / Este trabalho apresenta uma proposta de um sistema de seguran?a para automa??o predial, tendo como objetivo principal ? cria??o de um sistema que seja capaz de uma forma simples, monitorar as instala??es de um pr?dio a fim de atender as necessidades de prote??o patrimonial e pessoal, visando portabilidade, baixo custo e facilidade de uso. Foi projetada uma central de alarmes e controlador de acesso com entradas anal?gicas e digitais para sensores e sa?das para sirene, discadora telef?nica e fechadura eletr?nica. O sistema ? supervisionado por um software de monitoramento que f?z requisi??es de informa??es ? central de alarmes atrav?s da porta serial do computador (RS-232). O software supervis?rio foi desenvolvido na plataforma de desenvolvimento LabVIEW o qual disponibiliza os dados recebidos numa interface gr?fica informando os estados atuais dos sensores distribu?dos no interior do pr?dio e eventos do sistema como ocorr?ncias de alarmes. Este sistema tamb?m pode ser visualizado atrav?s da lnternet por pessoas cadastradas pelo administrador do sistema de seguran?a predial
124

Proposi??o de um modelo para an?lise de fluxo de carga, curto-circuito e simula??o de rel?s de produ??o

Oliveira, Arrhenius Vin?cius da Costa 17 December 2004 (has links)
Made available in DSpace on 2014-12-17T14:55:18Z (GMT). No. of bitstreams: 1 ArrheniusVCO_da_capa_ate_pag_12.pdf: 7828798 bytes, checksum: b0f0c76e1aebc32a2155c024e0abc8a9 (MD5) Previous issue date: 2004-12-17 / The objective of the present work is develop a model to simulate electrical energy networks in transient and stead states, using the software ATP (Alternative Transient Program), able to be a way to join two distinct themes, present in classical methodology planning networks: short circuit analysis and load flow theory. Beyond that, using a tool for relay simulation, this paper intend to use the new developed model to investigate the influence of transient phenomenon in operation of protection relays, and calibrate the enterprise's protections relays. For testing the model, some relays, actually, installed at COSERN were used / O presente trabalho objetiva ao desenvolvimento de um modelo para simular redes de energia el?trica em regimes transit?rio e permanente, utilizando o software ATP (Alternative Transient Program), para servir como elo entre dois temas distintos, presentes na metodologia cl?ssica de planejamento de redes: a an?lise de curtos-circuitos e o estudo de fluxo de carga. Al?m disso, dispondo de uma ferramenta de simula??o de rel?s, pretende-se usar o novo modelo, tanto para averiguar a influ?ncia de fen?menos transit?rios na opera??o dos rel?s de prote??o, quanto para calibrar esses rel?s. Para testar o modelo, utilizaram-se alguns dos rel?s atualmente instalados na COSERN
125

Utiliza??o do Linux como ferramanenta antiv?rus em redes corporativas

Medeiros, Teobaldo Adelino Dantas de 21 January 2005 (has links)
Made available in DSpace on 2014-12-17T14:56:07Z (GMT). No. of bitstreams: 1 TeobaldoADM.pdf: 3279285 bytes, checksum: 75c6fe2dde1ff5768438ffde84d8d45a (MD5) Previous issue date: 2005-01-21 / Apresentamos um sistema implementado em Linux? com o intuito de proteger redes contendo esta??es de trabalho Windows? contra agentes maliciosos. O sistema, denominado LIV - Linux? Integrated Viruswall, agrega caracter?sticas existentes em outras solu??es e acrescenta novas funcionalidades. Uma das funcionalidades implementadas ? a capacidade de detec??o de esta??es de trabalho contaminadas tendo como base a an?lise do tr?fego de rede. Outra ? o uso de uma t?cnica denominada compartilhamento armadilha para identificar agentes maliciosos em propaga??o na rede local. Uma vez detectado um foco de contamina??o, o LIV ? capaz de isol?-lo da rede, contendo a difus?o do agente malicioso. Resultados obtidos pelo LIV na prote??o de uma rede corporativa demonstram a efic?cia da an?lise do tr?fego de rede como instrumento de detec??o de agentes maliciosos, especialmente quando comparada a mecanismos tradicionais de detec??o, baseados exclusivamente em assinaturas digitais de c?digos maliciosos
126

Estima??o de Fasores para Prote??o de Sistemas El?tricos Baseada em M?nimos Quadrados e Morfologia Matem?tica

Formiga, Diego Alves 18 December 2012 (has links)
Made available in DSpace on 2014-12-17T14:56:16Z (GMT). No. of bitstreams: 1 DiegoAF_DISSERT.pdf: 1045785 bytes, checksum: 38dd893df9531c8e71f483fc22aa3802 (MD5) Previous issue date: 2012-12-18 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This work proposes a new technique for phasor estimation applied in microprocessor numerical relays for distance protection of transmission lines, based on the recursive least squares method and called least squares modified random walking. The phasor estimation methods have compromised their performance, mainly due to the DC exponential decaying component present in fault currents. In order to reduce the influence of the DC component, a Morphological Filter (FM) was added to the method of least squares and previously applied to the process of phasor estimation. The presented method is implemented in MATLABr and its performance is compared to one-cycle Fourier technique and conventional phasor estimation, which was also based on least squares algorithm. The methods based on least squares technique used for comparison with the proposed method were: forgetting factor recursive, covariance resetting and random walking. The techniques performance analysis were carried out by means of signals synthetic and signals provided of simulations on the Alternative Transient Program (ATP). When compared to other phasor estimation methods, the proposed method showed satisfactory results, when it comes to the estimation speed, the steady state oscillation and the overshoot. Then, the presented method performance was analyzed by means of variations in the fault parameters (resistance, distance, angle of incidence and type of fault). Through this study, the results did not showed significant variations in method performance. Besides, the apparent impedance trajectory and estimated distance of the fault were analysed, and the presented method showed better results in comparison to one-cycle Fourier algorithm / Prop?e-se neste trabalho uma nova t?cnica de estima??o fasorial, a ser utilizada em rel?s num?ricos microprocessados digitais para prote??o de dist?ncia de linhas de transmiss?o, baseada no m?todo dos m?nimos quadrados recursivo, denominada m?nimos quadrados em caminhada aleat?ria modificada. Os m?todos de estima??o fasorial t?m seu desempenho comprometido devido, principalmente, ? componente DC de decaimento exponencial presente nas correntes de falta. Para reduzir a influ?ncia da componente DC, agregou-se ao m?todo de m?nimos quadrados um Filtro Morfol?gico (FM) aplicado previamente ao processo de estima??o fasorial. O m?todo apresentado foi implementado em ambiente MATLABr e o seu desempenho comparado aos m?todos convencionais de estima??o fasorial, tamb?m baseados em m?nimos quadrados, e ao algoritmo de Fourier de um ciclo. Os m?todos baseados na t?cnica de m?nimos quadrados utilizados para compara??o com o m?todo proposto foram: recursivo ponderado, com reinicializa??o da covari?ncia e caminhada aleat?ria. As an?lises de desempenho das t?cnicas foram realizadas por meio de sinais sint?ticos e sinais oriundos de simula??es no Alternative Transient Program (ATP). Em compara??o aos demais m?todos de estima??o fasorial, o m?todo proposto apresentou resultados satisfat?rios no que se refere ? velocidade de resposta, oscila??o em regime permanente e percentual de overshoot. Em seguida, o m?todo proposto teve seu desempenho analisado frente ?s varia??es nos par?metros de falta (resist?ncia, dist?ncia, ?ngulo de incid?ncia e tipo de falta). Nesse estudo, constatou-se que o m?todo n?o sofreu varia??es significativas em seus resultados. Al?m disso, analisou-se a trajet?ria da imped?ncia aparente e dist?ncia estimada da falta, ao qual o m?todo proposto apresentou melhores resultados em compara??o ao algoritmo de Fourier de um ciclo
127

Regulariza??o fundi?ria em ?reas de prote??o permanente (APP s) : conflitos das gest?es urban?stica e ambiental

Minnicelli, Jo?o Luiz Portolan Galv?o 26 May 2008 (has links)
Made available in DSpace on 2016-04-04T18:21:46Z (GMT). No. of bitstreams: 1 Joao Luiz Portolan Galvao Minnicelli.pdf: 2771943 bytes, checksum: a3fe7d2be80e26e4ac8ca144f6714918 (MD5) Previous issue date: 2008-05-26 / Master?s research with the scope of looking into the origin and the motivation of conflicts that arise between urban planners and environmentalists when the objective is to regulate and legalize situations of dwellings in irregular settlements that have already been established, being those dwellings located in Areas of Permanent Protection (APPs). These are environmental locations that are especially protected. This normatization is carried out by means of land legalization , the beginnings and evolution of which are hereby also researched. Cases of land legalization of inhabited areas located in APPs of Campinas have also been studied; said legalizations have been sponsored by the local municipal government. The objective of the study was verifying the conditions under which said legalizations were conceived, effected and then evaluated. / Pesquisa de Mestrado destinada a averiguar a g?nese e a motiva??o dos conflitos que surgem entre urbanistas e ambientalistas nos casos em que se pretende regular e regularizar situa??es de moradia em assentamentos irregulares j? consolidados, quando tais moradias se situam em ?reas de Prote??o Permanente (APP?s) que s?o espa?os ambientais especialmente protegidos. A regulariza??o se d? por meio do instrumento da regulariza??o fundi?ria cujas origem e evolu??o tamb?m aqui se pesquisa. Estudam-se igualmente os casos de regulariza??o fundi?ria de ?reas de moradia situadas em ?rea de APP em Campinas promovidas pela municipalidade local para se averiguar a forma como tais regulariza??es foram concebidas, realizadas e posteriormente avaliadas.

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