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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.
11

Modelo para avaliaÃÃo e apoio ao plano de gerenciamento integrado de resÃduos sÃlidos urbanos municipais baseado em indicadores ambientais / Model for assessment and support integrated management plan based municipal solid waste in urban environmental indicators

Ana Karine Portela Vasconcelos 29 August 2014 (has links)
Este trabalho propÃe o desenvolvimento de um modelo de avaliaÃÃo e apoio ao gerenciamento integrado de resÃduos sÃlidos urbanos, com base em indicadores ambientais, especificamente nas etapas do serviÃo de coleta, varriÃÃo, capina e roÃada e no planejamento de limpeza. Uma pesquisa de opiniÃo (MÃtodo Delphi) foi realizada para determinar a importÃncia de cada um dos 24 (vinte e quatro) indicadores na composiÃÃo do Ãndice de avaliaÃÃo do gerenciamento integrado de resÃduos sÃlidos urbanos (IGU). A anÃlise estatÃstica apontou a regressÃo logÃstica ordinal como modelo matemÃtico mais adequado aos dados dessa pesquisa, com nÃvel de significÃncia 0,05 para os indicadores, na equaÃÃo final e, 0,20 para os subindicadores. Assim, todos os indicadores/subindicadores sÃo estatisticamente significativos. A partir desse Ãndice, desenvolveu-se, utilizando um algoritmo, uma nova ferramenta computacional, o software de avaliaÃÃo do gerenciamento integrado de resÃduos sÃlidos urbanos (SMSW), a fim de criar um banco de dados dos sistemas pÃblicos de limpeza urbana para formar a base estatÃstica das informaÃÃes relatadas. O SMSW à software livre, desenvolvido em linguagem PHP, o que proporciona a sua divulgaÃÃo tecnolÃgica. Espera-se que, dados reais de municÃpios de pequeno e mÃdio portes, sejam usados no processo de simulaÃÃo do modelo, comprovando sua aplicabilidade, funcionalidade e viabilidade, podendo, portanto, ser utilizado nÃo sà em um municÃpio, como tambÃm em consÃrcios intermunicipais.Este trabalho propÃe o desenvolvimento de um modelo de avaliaÃÃo e apoio ao gerenciamento integrado de resÃduos sÃlidos urbanos, com base em indicadores ambientais, especificamente nas etapas do serviÃo de coleta, varriÃÃo, capina e roÃada e no planejamento de limpeza. Uma pesquisa de opiniÃo (MÃtodo Delphi) foi realizada para determinar a importÃncia de cada um dos 24 (vinte e quatro) indicadores na composiÃÃo do Ãndice de avaliaÃÃo do gerenciamento integrado de resÃduos sÃlidos urbanos (IGU). A anÃlise estatÃstica apontou a regressÃo logÃstica ordinal como modelo matemÃtico mais adequado aos dados dessa pesquisa, com nÃvel de significÃncia 0,05 para os indicadores, na equaÃÃo final e, 0,20 para os subindicadores. Assim, todos os indicadores/subindicadores sÃo estatisticamente significativos. A partir desse Ãndice, desenvolveu-se, utilizando um algoritmo, uma nova ferramenta computacional, o software de avaliaÃÃo do gerenciamento integrado de resÃduos sÃlidos urbanos (SMSW), a fim de criar um banco de dados dos sistemas pÃblicos de limpeza urbana para formar a base estatÃstica das informaÃÃes relatadas. O SMSW à software livre, desenvolvido em linguagem PHP, o que proporciona a sua divulgaÃÃo tecnolÃgica. Espera-se que, dados reais de municÃpios de pequeno e mÃdio portes, sejam usados no processo de simulaÃÃo do modelo, comprovando sua aplicabilidade, funcionalidade e viabilidade, podendo, portanto, ser utilizado nÃo sà em um municÃpio, como tambÃm em consÃrcios intermunicipais. / This paper proposes the development of an evaluation model and support the integrated management of municipal solid waste, based on environmental indicators, specifically on the steps of collection, sweeping, weeding and mowing service in planning and cleaning. An opinion poll (Delphi method) was performed to determine the importance of each of the 24 (twenty four) indicators in the index of evaluation of the integrated management of municipal solid waste (IGU). Statistical analysis showed the ordinal logistic regression is more appropriate to the data of this research, with significance level 0.05 for the indicators, the final equation and 0.20 for the sub mathematical model. Thus, all indicators / sub-indicators are statistically significant. From this index, developed using an algorithm, a new computational tool, the software evaluation of the integrated management of municipal solid (SMSW) waste in order to create a database of public urban sanitation systems to form statistical basis of the information reported. The SMSW is free software, developed in PHP language, which provides its technological dissemination. It is expected that actual data of municipalities small and medium, are used in the model simulation process, proving its applicability, functionality and viability, and can therefore be used not only in a municipality, as well as in municipal consortia. this paper proposes the development of an evaluation model and support the integrated management of municipal solid waste, based on environmental indicators, specifically on the steps of collection, sweeping, weeding and mowing service in planning and cleaning. An opinion poll (Delphi method) was performed to determine the importance of each of the 24 (twenty four) indicators in the index of evaluation of the integrated management of municipal solid waste (IGU). Statistical analysis showed the ordinal logistic regression is more appropriate to the data of this research, with significance level 0.05 for the indicators, the final equation and 0.20 for the sub mathematical model. Thus, all indicators / sub-indicators are statistically significant. From this index, developed using an algorithm, a new computational tool, the software evaluation of the integrated management of municipal solid (SMSW) waste in order to create a database of public urban sanitation systems to form statistical basis of the information reported. The SMSW is free software, developed in PHP language, which provides its technological dissemination. It is expected that actual data of municipalities small and medium, are used in the model simulation process, proving its applicability, functionality and viability, and can therefore be used not only in a municipality, as well as in municipal consortia.
12

Improving capabilities and strategic fit in governmental agencies : the case of Abu Dhabi Government infrastructure sector

Alshebli, Abdulla January 2016 (has links)
The notion of Strategic Fit has been and remains to be one of the most important arguements in the fields of business strategy and strategic management. This research study examines the key concept of ‘strategic fit’ and its associated theories and seeks to investigate the causes that have created ‘strategic drift’ in Abu Dhabi’s governmental agencies in the infrastructure sector with the aim of improving their performance. However, for organisations, public or private, it still remains to be the most important notion and one that cannot be ignored because it is about the success of the organisation in its external environment where all competitive activity takes place. Thus, there are many underlying factors such as organisational culture, structure and organisational history that impact, or influence, the level of fit that organisations achieve. Therefore it is imperative that research is further undertaken on a deeper and wider level to fully understand the concept and importance of strategic fit and how it can be achieved. Hence, a research study in this area, especially in developing cities such as Abu Dhabi, is well justified and needed. The lack of strategic fit that has been witnessed in the Abu Dhabi’s infrastructure sector over the past few years continues to be, and it is a clear indication of a developing mismatch between the government and its policies and the agencies that implement them. However, this is clearly a major issue for the government going forward, if polices are developed with no clear understanding of the available resources and capabilities. Similarly, the study also seeks to determine why a strategic fit has not been achievable by the Abu Dhabi government. Though the government has developed policies to better serve its people, it continuously faces issues of policies not being implemented, or being implemented too late and targets not been met according to the original brief. It has been identified that there are numerous deficiencies between the various government agencies in the infrastructure sector in terms of keeping pace with governmental policies - consequently, resulting in strategic gaps with an increasing possibility of a possible strategic drift, if these issues are not addressed effectively and in a timely manner. The study further wishes to explore if strategic gaps have occurred as a result of inherent cultural, historical, political and/or structural aspects of the Abu Dhabi government and its numerous agencies – simply because these issues can be seen as preventative to change and progress which, in turn, can lead to strategic gaps and strategic drift in the long term. The research paradigm selected for this research study is that of the pragmatist approach and subsequently the key methodology employed throughout this research is that of the mixed methods. That mixed methods research is an intellectual and practical synthesis based on qualitative and quantitative research. Also, This research provides a summary of the important findings, proved hypotheses, achieved aim and objectives, and significant contribution to the knowledge of strategic management through the development of the “Community Innovation Scheme”, the “3-Spectrums of Change”, the “4Ms Change Model”; and the resulting framework model; the “Government Strategy Model”.
13

RETURLOGISTIKEN I URBANA MILJÖER : Fokus på avfallshantering inom Malmö stad / REVERSE LOGISTICS IN URBAN ENVIRONMENT : Focus on waste management within Malmö city

Holmqvist, Elin, Bylander, Elin January 2023 (has links)
En utmaning som finns i urbana miljöer är att få till och nyttja ett nätverk med fungerande returlogistik för att uppnå mål om hållbarhet. Följande arbete undersöker returlogistiken i urbana miljöer, framför allt hur avfallshanteringen ser ut, hur den tas till hänsyn vid planering av stadsutveckling samt vilka förbättringsmöjligheter som finns. Den urbana miljön som valts att undersökas är Malmö stad eftersom den är i en snabb utvecklingsprocess. Arbetet bygger på en litteraturstudie som sedan jämförts mot empiriskt material som samlats in genom intervjuer och plandokument. Variablerna som tagits i beaktning är returlogistik, citylogistik, avfallshantering och stadsplanering för att besvara syftet som framställts. Genom att jämföra teorin mot empirin drogs slutsatsen att det krävs fortsatt utvecklingsarbete men även högre prioritet på att optimera urban logistik och därmed avfallshanteringen. Urban logistiks största utmaning är kampen om kvadratmetrarna eftersom många olika aktörer är aktiva på en kompakt yta. Möjligheter som finns för framtida förbättringar är att ge returlogistiken mer uppmärksamhet och framför allt resurser. / A challenge that exists in urban environments is to create and use a network with functioning reverse logistics to achieve sustainability goals. The following essay looks into reverse logistics in urban environments, especially waste management, how it is taken into consideration when developing urban areas and what improvement opportunities exist. The urban environment chosen to be explored is the city of Malmö because it is in a rapid development process. The essay is based on a literature review which is then compared against empirical material collected through interviews and planning documents. The variables taken into account are reversed logistics, city logistics, waste management and urban planning to answer the purpose presented. By comparing the theories with the empirical material, it was concluded that continued development work is required but also a higher priority to optimize urban logistics and waste management. Urban logistics' biggest challenge is the fight for square meters because of the many different corporations are active on a compact surface. Possibilities that exist for future improvements are to give reverse logistics more attention and, above all, resources.
14

No labirinto: formas de gestão do espaço e das populações na Cracolândia / The labyrinth: government of populations in a crack use area in SP

Marina Mattar Soukef Nasser 31 October 2016 (has links)
A presente pesquisa partiu de uma etnografia realizada na região conhecida como Cracolândia no centro de São Paulo, considerada a mais famosa territorialidade de uso de crack no país. Alvo de intervenções estatais desde seu surgimento, nos anos 1990, essa territorialidade continua no centro de muitos programas e instituições. Em 2012, com o conflito erguido em torno da Operação Sufoco, há, no entanto, uma mudança nas formas de gestão desse espaço: de uma racionalidade de dispersão, que visava impedir o agrupamento de usuários de crack por meio do uso da força, para uma lógica de governo que precisa desse espaço concentrado para executar seus programas. Minha hipótese é que a fixação territorial combinada a essa malha concentrada de programas e instituições assistenciais acabou por construir um campo de gravitação em torno da Cracolândia, de modo a atrair pessoas com trajetórias muito diferentes mas que se encontram ali por terem uma vida errante. A partir do percurso de uma jovem que conheci durante a pesquisa, argumento que o Estado produz espaços e territorialidades como a Cracolândia, ao induzir e condicionar o movimento de diversos sujeitos. Como a personagem dessa pesquisa evidencia, sua circulação é incessante e ilegível, como na imagem do labirinto, mas guiada por uma racionalidade de buscar um local seguro das investidas policiais para estabelecer suas malocas e modos de vida, e onde há concentração de recursos e possibilidades. Dessa forma, a Cracolândia só faz sentido dentro de uma experiência urbana mais ampla, o que envolve outros espaços não contingentes territorialmente. / This research started from an ethnography in the region known as Cracolândia in downtown of São Paulo, considered the most famous crack use of territoriality in the country. Target of state interventions since its inception in the 1990s, this territoriality remains at the heart of many programs and institutions. In 2012, the conflict erected around the operation Suffocation, there is, however, a change in the forms of management of this space: a rationality dispersion, which was intended to prevent the grouping of crack users through the use of force, to a logic of government that needs this concentrated space to run their programs. My hypothesis is that the territorial fixation combined with this concentrated mesh programs and charitable institutions eventually build a gravitational field around the Cracolândia in order to attract people with very different paths but they are there to have a wandering life. From the journey of a young man I met during the research, I argue that the state produces spaces and territoriality as Cracolândia, to induce and influence the movement of various subjects. As the character of this research shows, their movement is unceasing and unreadable, as the labyrinth image, but guided by a rationality to seek a safe place police invested to establish their \"huts\" and ways of life, and where there is a concentration of resources and possibilities. Thus, Cracolândia only makes sense within a broader urban experience, which involves other spaces not contingent territorially.
15

No labirinto: formas de gestão do espaço e das populações na Cracolândia / The labyrinth: government of populations in a crack use area in SP

Nasser, Marina Mattar Soukef 31 October 2016 (has links)
A presente pesquisa partiu de uma etnografia realizada na região conhecida como Cracolândia no centro de São Paulo, considerada a mais famosa territorialidade de uso de crack no país. Alvo de intervenções estatais desde seu surgimento, nos anos 1990, essa territorialidade continua no centro de muitos programas e instituições. Em 2012, com o conflito erguido em torno da Operação Sufoco, há, no entanto, uma mudança nas formas de gestão desse espaço: de uma racionalidade de dispersão, que visava impedir o agrupamento de usuários de crack por meio do uso da força, para uma lógica de governo que precisa desse espaço concentrado para executar seus programas. Minha hipótese é que a fixação territorial combinada a essa malha concentrada de programas e instituições assistenciais acabou por construir um campo de gravitação em torno da Cracolândia, de modo a atrair pessoas com trajetórias muito diferentes mas que se encontram ali por terem uma vida errante. A partir do percurso de uma jovem que conheci durante a pesquisa, argumento que o Estado produz espaços e territorialidades como a Cracolândia, ao induzir e condicionar o movimento de diversos sujeitos. Como a personagem dessa pesquisa evidencia, sua circulação é incessante e ilegível, como na imagem do labirinto, mas guiada por uma racionalidade de buscar um local seguro das investidas policiais para estabelecer suas malocas e modos de vida, e onde há concentração de recursos e possibilidades. Dessa forma, a Cracolândia só faz sentido dentro de uma experiência urbana mais ampla, o que envolve outros espaços não contingentes territorialmente. / This research started from an ethnography in the region known as Cracolândia in downtown of São Paulo, considered the most famous crack use of territoriality in the country. Target of state interventions since its inception in the 1990s, this territoriality remains at the heart of many programs and institutions. In 2012, the conflict erected around the operation Suffocation, there is, however, a change in the forms of management of this space: a rationality dispersion, which was intended to prevent the grouping of crack users through the use of force, to a logic of government that needs this concentrated space to run their programs. My hypothesis is that the territorial fixation combined with this concentrated mesh programs and charitable institutions eventually build a gravitational field around the Cracolândia in order to attract people with very different paths but they are there to have a wandering life. From the journey of a young man I met during the research, I argue that the state produces spaces and territoriality as Cracolândia, to induce and influence the movement of various subjects. As the character of this research shows, their movement is unceasing and unreadable, as the labyrinth image, but guided by a rationality to seek a safe place police invested to establish their \"huts\" and ways of life, and where there is a concentration of resources and possibilities. Thus, Cracolândia only makes sense within a broader urban experience, which involves other spaces not contingent territorially.
16

As práticas de governança e gestão para a mitigação de pressões e ameaças em unidades de conservação urbanas / Governance and management practices for mitigating pressures and threats in urban protected areas

Sansão, Rafaela Aguilar 20 March 2017 (has links)
As Unidades de Conservação (UCs) urbanas vêm sendo pressionadas e ameaçadas por atividades antrópicas, resultando em novos desafios de gestão e governança. Desse modo, buscou-se analisar os procedimentos utilizados para mitigação das principais pressões e ameaças em UCs urbanas e identificar as principais variáveis que interferem no alcance dos seus objetivos. Para tanto, foram realizadas entrevistas semiestruturadas com as equipes de gestão de UCs urbanas nacionais (Parques Estaduais do Jaraguá e Cantareira, Estações Ecológicas de Ribeirão Preto e Assis) e internacionais (Sítios Natura 2000 Lendspitz-Maiernigg, Sonian Forest e Parque Nacional Zuid-Kennemerland), onde foram avaliadas as principais pressões e ameaças enfrentadas por essas áreas, bem como as ações de conservação que vem sendo adotadas. As entrevistas foram direcionadas por questões adaptadas da Metodologia RAPPAM (Rapid Assessment and Prioritization of Protected Area Management) e para a análise dos dados foi utilizada a técnica Análise de Conteúdo. Além das entrevistas, foram analisadas as orientações e melhores práticas propostas pela IUCN (União Internacional para a Conservação da Natureza), instituição reconhecida internacionalmente por propor recomendações relevantes para áreas protegidas mundiais. Os resultados indicam uma série de pressões e ameaças comuns aos sete casos de estudos (e.g. desenvolvimento urbano do entorno; estradas e rodovias), bem como pressões e ameaças que ocorrem somente nos casos de estudos nacionais (e.g. incêndios florestais e ocupações ilegais;) e internacionais (transmissão de doenças entre animais silvestres). Também observou-se que todas as equipes de gestão buscaram implementar procedimentos para mitigação em seus territórios, tais como ações de: proteção (e.g. fiscalização e monitoramento); manejo (e.g. controle de espécies exóticas invasoras); operacionalização (e.g. articulação com diferentes instituições); integração (e.g. sensibilização ambiental); uso público (e.g. atividades turísticas de baixo impacto ambiental); e conhecimento (e.g. promoção de pesquisas científicas). As principais variáveis que prejudicam o cumprimento dos seus objetivos são: recursos humanos e financeiros insuficientes, baixa transparência e participação social nos processos de tomada de decisão. Observa-se que a IUCN propõem cinco princípios para uma boa governança (i.e. legitimidade e voz; direção; desempenho; responsabilidade e equidade e direitos) e diversas práticas para uma gestão adequada (e.g. promover uma gestão dinâmica, ativa e planejada, seguindo concepções racionais, adaptativas e participativas). Desse modo, conclui-se que os responsáveis pelas UCs urbanas devem promover o empoderamento dos conselhos, para que estes funcionem adequadamente como fóruns de discussão e participação, bem como devem integrar essas áreas com seus territórios, através de legislações e diretrizes específicas. A adoção de práticas de governança e gestão adequadas, exequíveis, dinâmicas e participativas em UCs urbanas, são fundamentais para a manutenção de ecossistemas saudáveis, os quais formam a espinha dorsal de um futuro mais sustentável. Além disso, para o cumprimento das propostas discutidas, entende-se como imprescindível que as autoridades governamentais incorporem em suas legislações a definição de UCs urbanas, reconhecendo a sua importância e garantindo com que estas áreas recebam maiores atenções / Urban protected areas (PAs) have been under pressure and threatened by anthropic activities, resulting in new management and governance challenges.Thus, we aimed to analyze the procedures used to mitigate the main pressures and threats in urban PAs and to identify the main variables that interfere with the achievement of their objectives. Therefore, we did semi-structured interviews with the management staff of national (State Parks Jaraguá and Cantareira and Ecological Stations of Ribeirão Preto and Assis) and international urban PAs (Natura 2000 Sites Lendspitz-Maiernigg, Sonian Forest and National Park Zuid-Kennemerland). We evaluated, together with their staff, the main pressures and threats faced by the PAs, as well as we analyzed the conservation actions they adopted. The interviews were directed by questions adapted from the Rapid Assessment and Prioritization of Protected Area Management (RAPPAM) Methodology, and to analyze the data we used the Content Analysis technique. In addition to the interviews, we analyzed the guidelines for best practices proposed by the IUCN (International Union for Conservation of Nature), an internationally recognized institution for proposing relevant recommendations to global protected areas. The results indicate a series of pressures and threats common to the seven PAs (e.g. urban development and establishment of roads and highways), as well as pressures and threats found only in the national PAs (e.g. forest fires and illegal occupations) and in the international PAs (e.g. transmission of diseases between wild animals). It was also noted that all case studies adopted six types of conservation actions, such as: protection (e.g. surveillance and monitoring); management (e.g. control of invasive alien species); operationalization (e.g. articulation with different institutions); integration (e.g. environmental awareness); public use (e.g. promotion of tourism and recreational activities of low environmental impact); and knowledge (e.g. promotion of scientific research). The main variables that undermine the fulfillment of urban PAs objectives are insufficient human and financial resources, low transparency and social participation in decision-making processes. We observed that IUCN proposes five principles for good governance (i.e. legitimacy and voice, direction, performance, accountability, equity and rights) and various practices for appropriate management (e.g. promote a dynamic, active and planned management, following rational, adaptive and participative conceptions). Thus, we concluded that those responsible for urban PAs should promote the empowerment of their councils, so that they function properly as discussion forums, as well as must integrate these areas with their territories, through specific legislation. The adoption of appropriate, feasible, dynamic and participatory governance and management practices in urban PAs are fundamental to the maintenance of healthy ecosystems, which form the backbone of a more sustainable future. In addition, to achieve the proposals discussed, it is essential that government authorities incorporate into their legislation the definition of urban PAs, recognizing their importance and ensuring that these areas receive greater attention
17

Revisiting Eden : the Olmsted Brothers' ecological plans for Los Angeles, 1914-1931

O'Hara, Christine Edstrom January 2018 (has links)
Ecological planning relies on a keen awareness of relationships between biophysical and social processes, then uses this knowledge for decision making in accommodating for human needs. The value of this planning process allows for design intervention while also ensuring a sustained use of the landscape, with these insights blending skill and artistry into place-making. In the 1960s, environmental concerns galvanized a generation of landscape architects who first codified ecological planning as a rationale for decisions with environmental stewardship. While this is the accepted canon, in the early 20th century during a period of experimentation and exploration, the Olmsted Brothers landscape architecture firm was using ecological principles as foundations for landscape architecture practice. This thesis challenges current discourse and accepted history, presenting evidence that the Olmsted Brothers' work in the 1920s predated many modern ecological theories and applications, and is an important addition to the historiography of ecological planning. This thesis largely focuses on Frederick Law Olmsted, Jr. as the central historical figure, offering a more in-depth understanding of the evolution of the firm, and fills the gap of the Olmsted legacy. As the children of Frederick Law Olmsted, Sr., Frederick Law Olmsted, Jr. (1870-1957) along with his brother John Charles Olmsted (1852-1920) co-founded the Olmsted Brothers and created one of the most prolific landscape architecture practices, developing projects in all aspects of landscape design. The Olmsted Brothers' work in California accounts for over 200 projects, and ranks among the highest number of their 5000 designs developed in the United States. In the early 20th century, the city of Los Angeles offered significant ecological, cultural, and technological challenges for the firm, with the city's unbridled urbanization and proliferate use of water and automobility. Rich in solutions, the firm's built and proposed designs over the course of 20 years revealed the discipline of landscape architecture in its richest and most scalar form. From small scale gardens, residential communities, park and parkway systems, to open space and watershed planning, the Olmsted Brothers created public spaces that worked in relationship to the ecology of the region during a critical juncture in the history of regional planning in Southern California. A range of methods were utilized in this thesis. Primary data provided both qualitative and quantitative material for study and was extracted from letters, reports and writing, drawings, photos, plans and maps. Over 20,000 primary documents, written by the firm's principals, provided the basis for analysis, and in a new way, this thesis interprets not only the written documents, but related construction documents developed from 1914 - 1931. As part of its data collection, an original contribution of this study is a comprehensive corpus of Olmsted Brothers source material from their work in Los Angeles. Methodologies sought to modify these documents into a spatial understanding of their work through digital analysis and re-creation of designs. The Olmsted Brothers' design solutions provide insights into today's ongoing concerns about water management, sustainable urban planning, and multifunctional landscapes. Their design proposals solved multiple problems with the design, accounting for not only vast geography, but complex cultural and natural systems within it. The value of their ideas reflects landscape architecture solutions as hybrid, dynamic, and strategic, offering 21st century practitioners paradigms in an ever-changing ecology.
18

As práticas de governança e gestão para a mitigação de pressões e ameaças em unidades de conservação urbanas / Governance and management practices for mitigating pressures and threats in urban protected areas

Rafaela Aguilar Sansão 20 March 2017 (has links)
As Unidades de Conservação (UCs) urbanas vêm sendo pressionadas e ameaçadas por atividades antrópicas, resultando em novos desafios de gestão e governança. Desse modo, buscou-se analisar os procedimentos utilizados para mitigação das principais pressões e ameaças em UCs urbanas e identificar as principais variáveis que interferem no alcance dos seus objetivos. Para tanto, foram realizadas entrevistas semiestruturadas com as equipes de gestão de UCs urbanas nacionais (Parques Estaduais do Jaraguá e Cantareira, Estações Ecológicas de Ribeirão Preto e Assis) e internacionais (Sítios Natura 2000 Lendspitz-Maiernigg, Sonian Forest e Parque Nacional Zuid-Kennemerland), onde foram avaliadas as principais pressões e ameaças enfrentadas por essas áreas, bem como as ações de conservação que vem sendo adotadas. As entrevistas foram direcionadas por questões adaptadas da Metodologia RAPPAM (Rapid Assessment and Prioritization of Protected Area Management) e para a análise dos dados foi utilizada a técnica Análise de Conteúdo. Além das entrevistas, foram analisadas as orientações e melhores práticas propostas pela IUCN (União Internacional para a Conservação da Natureza), instituição reconhecida internacionalmente por propor recomendações relevantes para áreas protegidas mundiais. Os resultados indicam uma série de pressões e ameaças comuns aos sete casos de estudos (e.g. desenvolvimento urbano do entorno; estradas e rodovias), bem como pressões e ameaças que ocorrem somente nos casos de estudos nacionais (e.g. incêndios florestais e ocupações ilegais;) e internacionais (transmissão de doenças entre animais silvestres). Também observou-se que todas as equipes de gestão buscaram implementar procedimentos para mitigação em seus territórios, tais como ações de: proteção (e.g. fiscalização e monitoramento); manejo (e.g. controle de espécies exóticas invasoras); operacionalização (e.g. articulação com diferentes instituições); integração (e.g. sensibilização ambiental); uso público (e.g. atividades turísticas de baixo impacto ambiental); e conhecimento (e.g. promoção de pesquisas científicas). As principais variáveis que prejudicam o cumprimento dos seus objetivos são: recursos humanos e financeiros insuficientes, baixa transparência e participação social nos processos de tomada de decisão. Observa-se que a IUCN propõem cinco princípios para uma boa governança (i.e. legitimidade e voz; direção; desempenho; responsabilidade e equidade e direitos) e diversas práticas para uma gestão adequada (e.g. promover uma gestão dinâmica, ativa e planejada, seguindo concepções racionais, adaptativas e participativas). Desse modo, conclui-se que os responsáveis pelas UCs urbanas devem promover o empoderamento dos conselhos, para que estes funcionem adequadamente como fóruns de discussão e participação, bem como devem integrar essas áreas com seus territórios, através de legislações e diretrizes específicas. A adoção de práticas de governança e gestão adequadas, exequíveis, dinâmicas e participativas em UCs urbanas, são fundamentais para a manutenção de ecossistemas saudáveis, os quais formam a espinha dorsal de um futuro mais sustentável. Além disso, para o cumprimento das propostas discutidas, entende-se como imprescindível que as autoridades governamentais incorporem em suas legislações a definição de UCs urbanas, reconhecendo a sua importância e garantindo com que estas áreas recebam maiores atenções / Urban protected areas (PAs) have been under pressure and threatened by anthropic activities, resulting in new management and governance challenges.Thus, we aimed to analyze the procedures used to mitigate the main pressures and threats in urban PAs and to identify the main variables that interfere with the achievement of their objectives. Therefore, we did semi-structured interviews with the management staff of national (State Parks Jaraguá and Cantareira and Ecological Stations of Ribeirão Preto and Assis) and international urban PAs (Natura 2000 Sites Lendspitz-Maiernigg, Sonian Forest and National Park Zuid-Kennemerland). We evaluated, together with their staff, the main pressures and threats faced by the PAs, as well as we analyzed the conservation actions they adopted. The interviews were directed by questions adapted from the Rapid Assessment and Prioritization of Protected Area Management (RAPPAM) Methodology, and to analyze the data we used the Content Analysis technique. In addition to the interviews, we analyzed the guidelines for best practices proposed by the IUCN (International Union for Conservation of Nature), an internationally recognized institution for proposing relevant recommendations to global protected areas. The results indicate a series of pressures and threats common to the seven PAs (e.g. urban development and establishment of roads and highways), as well as pressures and threats found only in the national PAs (e.g. forest fires and illegal occupations) and in the international PAs (e.g. transmission of diseases between wild animals). It was also noted that all case studies adopted six types of conservation actions, such as: protection (e.g. surveillance and monitoring); management (e.g. control of invasive alien species); operationalization (e.g. articulation with different institutions); integration (e.g. environmental awareness); public use (e.g. promotion of tourism and recreational activities of low environmental impact); and knowledge (e.g. promotion of scientific research). The main variables that undermine the fulfillment of urban PAs objectives are insufficient human and financial resources, low transparency and social participation in decision-making processes. We observed that IUCN proposes five principles for good governance (i.e. legitimacy and voice, direction, performance, accountability, equity and rights) and various practices for appropriate management (e.g. promote a dynamic, active and planned management, following rational, adaptive and participative conceptions). Thus, we concluded that those responsible for urban PAs should promote the empowerment of their councils, so that they function properly as discussion forums, as well as must integrate these areas with their territories, through specific legislation. The adoption of appropriate, feasible, dynamic and participatory governance and management practices in urban PAs are fundamental to the maintenance of healthy ecosystems, which form the backbone of a more sustainable future. In addition, to achieve the proposals discussed, it is essential that government authorities incorporate into their legislation the definition of urban PAs, recognizing their importance and ensuring that these areas receive greater attention
19

Ereignisorientierte Routenwahl in spontan gestörten Stadtstraßennetzen zur Anwendung eines selbstorganisierten Störfallmanagements

Rausch, Markus 20 January 2016 (has links)
Die Mobilität von Personen und Gütern, insbesondere in Städten, ist der Motor einer Volkswirtschaft. Dieser Motor kommt jedoch ins Stottern, wenn Staubildung im Stadtstraßennetzwerk einsetzt. Eine unvermeidbare Ursache von Staubildung stellen Verkehrsstörfälle dar, die schlimmstenfalls zu Gridlocks führen können. In der Folge werden hohe Kosten für Verkehr, Wirtschaft und Umwelt verursacht. Mit welchen Gegenmaßnahmen kann die Staubildung im Netzwerk effektiv bewältigt werden? Wie können entsprechende Gegenmaßnahmen realistisch noch vor einem praktischen Einsatz bewertet werden? Ausgehend von diesen Fragestellungen, widmet sich diese Dissertation der Entwicklung eines ereignisorientierten Routenwahlmodells für den Stadtstraßenverkehr und eines selbstorganisierten Störfallmanagements als Gegenmaßnahme zur Reduzierung negativer Auswirkungen der Staubildung. Zur Modellierung des Routenwahlverhaltens in ereignisreichen Stadtstraßennetzen wird das ereignisorientierte Routenwahlmodell entwickelt. Der Ausgangspunkt des Modells ist die diskrete Wahltheorie. Entscheidungsprozesse einzelner Autofahrer werden vor und während der Fahrt direkt simuliert. Der Entscheidungsprozess ist dabei maßgeblich von Beobachtungen lokaler Verkehrsbedingungen geprägt. Somit wird nachgebildet, dass Autofahrer flexibel auf unvorhergesehene Ereignisse durch Routenwechsel reagieren können. Auf diese Weise ist eine realistische Simulation des Routenwahlverhaltens von Autofahrern in der Stadt möglich. Das ereignisorientierte Routenwahlmodell ist zudem generisch formuliert. Es lässt sich zur Bewertung von Gegenmaßnahmen für störfallbedingte Staubildung einsetzen und bedient darüber hinaus ein breites Anwendungsspektrum. Der zweite Beitrag dieser Dissertation ist ein selbstorganisiertes Konzept für ein Störfallmanagement in Stadtstraßennetzen als Gegenmaßnahme zur Staubildung. Es vereint zwei lokal wirkende Prinzipien, deren Ausgangspunkte die Lichtsignalanlagen im Stadtnetzwerk sind. Mit verlängerten Rotzeiten werden Fahrzeuge an einer Kreuzung an der Einfahrt in einen Straßenabschnitt gehindert, wenn ein vorgesehener Rückstaubereich ausgeschöpft ist, da andernfalls Blockaden auf den Kreuzungen entstehen. Gleichzeitig werden noch freie Richtungen an der Kreuzung durch verlängerte Grünzeiten attraktiver gestaltet, um Autofahrer zum Umfahren der Staubildung zu motivieren. Die Anwendung der lokalen Wirkungsprinzipien stellt sich vollständig selbstorganisiert, d.h. ohne Vorgabe eines Planers, mit dem Ausmaß der Staubildung im Netzwerk ein. Simulationsstudien in zwei unterschiedlich komplexen Netzwerken haben die Machbarkeit des selbstorganisierten Störfallmanagements nachgewiesen. Gegenüber einem gewöhnlichen Netzwerk konnte für alle untersuchten Störfälle die Akkumulation zusätzlicher Fahrzeuge im Netzwerk während des Störfalls signifikant reduziert werden. / The mobility of people and goods, especially in urban areas, is of significant importance for national economies. However, recurrent congestion in urban road networks, caused by increased traffic demand, considerably restrains mobility on a daily basis. Another significant source of congestion are traffic incidents which even might lead to gridlock situations. Congestion raises high costs for traffic, economy and environment. Which countermeasures should be applied for an effective management of urban congestion? How can appropriate countermeasures be realistically evaluated? Based on these questions, this thesis is devoted to the development of an event-oriented route choice model for urban road traffic and a self-organized incident management strategy as an effective countermeasure for urban congestion. The first contribution of this thesis is an event-oriented route choice model for urban road networks. It is based on discrete choice theory and models decision-making processes of individual motorists before and during their journey. A key aspect of the proposed model is the motorist's ability to observe local traffic conditions. These observations are then included in the decision process. In this way, it can be modeled that motorists respond to unforeseen events by route revisions. This allows a realistic simulation of the route choice behavior of motorists in naturally eventful urban road networks. Furthermore, the event-oriented route choice model is flexibly formulated. It can be used for the evaluation of countermeasures for incident-related congestion and, moreover, allows a wide range of applications. The second contribution of this thesis is a self-organized concept of an incident management strategy in urban road networks as a countermeasure for urban congestion. It combines two locally acting principles on the basis of traffic lights in an urban road network. The inflow of vehicles into a road segment is regulated with restricted or skipped green times as soon as an allocated queuing capacity is depleted. Otherwise, blockages would result on the intersection. At the same time, yet free alternative directions are served with regular or even extended green times and, thus, might become more attractive to the driver than the original congested direction. The application of these local principles is realized in a completely self-organized manner, thereby scaling directly with the extent of congestion in the urban road network. Simulation studies in two networks with different complexity have proven the feasibility of the self-organized incident management. Compared to an ordinary network, the extents of additional vehicles due to investigated incidents were significantly reduced.

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