61 resultados para Urban transportation policy


Relevância:

100.00% 100.00%

Publicador:

Resumo:

This paper examines the tensions between modernisation and heritage protection in the Lao capital, Vientiane. Vientiane provides an interesting case study of the dilemmas facing small cities in developing countries as those countries try to manage the pressures that result from greater integration in regional and global processes of economic and cultural change. While modernisation appears to be winning out over heritage  protection, the paper concludes that they are not necessarily mutually exclusive, and that heritage protection in Vientiane is largely aimed at  reinforcing monumental and nation-building elements, emphasising the  development of a contemporary national capital of a modern nation state.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

In this paper, we propose an algorithm for an upgrading arc median shortest path problem for a transportation network. The problem is to identify a set of nondominated paths that minimizes both upgrading cost and overall travel time of the entire network. These two objectives are realistic for transportation network problems, but of a conflicting and noncompensatory nature. In addition, unlike upgrading cost which is the sum of the arc costs on the path, overall travel time of the entire network cannot be expressed as a sum of arc travel times on the path. The proposed solution approach to the problem is based on heuristic labeling and exhaustive search techniques, in criteria space and solution space, respectively. The first approach labels each node in terms of upgrading cost, and deletes cyclic and infeasible paths in criteria space. The latter calculates the overall travel time of the entire network for each feasible path, deletes dominated paths on the basis of the objective vector and identifies a set of Pareto optimal paths in the solution space. The computational study, using two small-scale transportation networks, has demonstrated that the algorithm proposed herein is able to efficiently identify a set of nondominated median shortest paths, based on two conflicting and noncompensatory objectives.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

This paper proposes an alternative algorithm to solve the median shortest path problem (MSPP) in the planning and design of urban transportation networks. The proposed vector labeling algorithm is based on the labeling of each node in terms of a multiple and conflicting vector of objectives which deletes cyclic, infeasible and extreme-dominated paths in the criteria space imposing cyclic break (CB), path cost constraint (PCC) and access cost parameter (ACP) respectively. The output of the algorithm is a set of Pareto optimal paths (POP) with an objective vector from predetermined origin to destination nodes. Thus, this paper formulates an algorithm to identify a non-inferior solution set of POP based on a non-dominated set of objective vectors that leaves the ultimate decision to decision-makers. A numerical experiment is conducted using an artificial transportation network in order to validate and compare results. Sensitivity analysis has shown that the proposed algorithm is more efficient and advantageous over existing solutions in terms of computing execution time and memory space used.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

This paper proposes an efficient solution algorithm for realistic multi-objective median shortest path problems in the design of urban transportation networks. The proposed problem formulation and solution algorithm to median shortest path problem is based on three realistic objectives via route cost or investment cost, overall travel time of the entire network and total toll revenue. The proposed solution approach to the problem is based on the heuristic labeling and exhaustive search technique in criteria space and solution space of the algorithm respectively. The first labels each node in terms of route cost and deletes cyclic and infeasible paths in criteria space imposing cyclic break and route cost constraint respectively. The latter deletes dominated paths in terms of objectives vector in solution space in order to identify a set of Pareto optimal paths. The approach, thus, proposes a non-inferior solution set of Pareto optimal paths based on non-dominated objective vector and leaves the ultimate decision to decision-makers for purpose specific final decision during applications. A numerical experiment is conducted to test the proposed algorithm using artificial transportation network. Sensitivity analyses have shown that the proposed algorithm is advantageous and efficient over existing algorithms to find a set of Pareto optimal paths to median shortest paths problems.

Relevância:

90.00% 90.00%

Publicador:

Resumo:

Historic architectural heritage is important to sustainable urban planning policy, particularly in cities that have heritage sites and/or themselves have ancient archaeological value. Delhi is one of the oldest living cities in the world. However, the vision of its planning policy is limited to valuing heritage for itself and for its economic value instead of also exploring the ways in the city’s heritage might contribute to the social organisation and utilisation of the urban public space. Particularly, like most national policy documents on heritage, it ignores the heritage/gender nexus, which has implications for the identity and status of women in Delhi, community development and ecological preservation. But twenty women practioners and scholars of development in Delhi referred to heritage as a challenge as well as opportunity for gender and urban sustainability when asked for their perspectives on the most important sustainability issues in the city. I argue that Delhi’s urban planning strategies must acknowledge the gender/heritage nexus to enable holistic and gender-inclusive urban development for the present and future generations of its citizens, which is an important thrust of the sustainability agenda.

Relevância:

90.00% 90.00%

Publicador:

Resumo:

Commuting to work is one of the most important and regular routines of urban transportation. From a geographic perspective, the length of people's commute is influenced, to some degree, by the spatial separation of their home and workplace and the transport infrastructure. The rise of car ownership in Australia has been accompanied by a considerable decrease of public transport use. Increased personal mobility has fuelled the trend of decentralised housing development, mostly without a clear planning for local employment, or alternative means of transportation. As a result, the urban patterns of regional Australia is formed by a complex network of a multitude of small towns, scattered in relatively large areas, which are totally dependent and polarized by few medium and large cities. Such hierarchical and dispersed geographical structure implies significant carbon dioxide emissions from transportation. Transport sector accounts for 14% of Australia's net greenhouse gas emissions, and without further policy action, they are projected to continue to increase. The aim of this paper is to demonstrate the importance of incorporating urban climate understanding and knowledge into urban planning processes in order to develop cities that are more sustainable. A GIS-based gravity model is employed to examine the travel patterns related to hierarchical and geographical urban region networks, and the derived total carbon emissions, using the Greater Geelong region as a case study. The new challenges presented by climate change bring with them opportunities. In order to fully reach the very challenging targets of carbon reduction in Australia an integrated and strategic vision for urban and regional planning is necessary.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

This paper presents preliminary findings of a project investigating the integration and application of ecological public health principles in Melboume 2030, the Victorian Government's urban planning blueprint for Melboume for the next 30 years. The study examines the political, organisational, social, and inter-personal factors that impact on the integration and application of broad health considerations into urban planning policy in Victoria. We are testing the premise that achieving integrated planning requires a systematic integration of government activity across sectors. Using discourse analysis and key informant interviews, we examined relevant government policy and legislation and its implementation against world's best practice. Preliminary findings show that the degree of leadership in relation to deploying the mission, and implementation processes sustain or impede integrated planning at a whole-of-government and intersectoral level.

These findings may inform a much-needed national agenda on promoting health through integrated planning. Findings will identify future research directions and action to bridge the gap between urban planning and health planning systems

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Traffic noise causes adverse effects on the health and quality of life of individuals and communities exposed to it, including annoyance, sleep disturbance, decreased performance at school/work, stress, hypertension, and ischemic heart disease. In Australia there are few standards or policies addressing noise in urban environments, with many discrepancies in noise level thresholds when comparing states and regions. Currently Victoria has a day-to-night threshold for noise levels well above accepted levels in Europe, and there is no standard for the late night period. A better understanding of the health impacts of noise in the Australian context is vital for informing development and implementation of policy and legislation for road traffic noise management. This paper reviews the evidence base and policies related to traffic noise in urban areas, and presents a case study of noise mapping and assessing population health impacts (eg. sleep disturbance), in Geelong,Vcitoria,Australia.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

The focus of this paper is peripheral urban growth centres on the edges of capital cities in Australia and the challenges they face as dormitory suburbs attempting to establish their own local business development. These challenges create dilemmas as infrastructure and climate change place pressure on long commuting times, while developing strong locally based communities is limited by many resource and demand constraints. The main research question is to examine how these challenges are being addressed in both public policy and academic research. Two propositions emerge from this analysis. The first is that, despite clear recognition of these challenges by public policy makers, there is a lack of coherent policy vision in addressing the dilemmas that are facing these urban growth centres. The second is that, despite all the concerns and lack of policy vision, there is a dearth of useful academic research in Australia to understand the dilemmas and provide guidance for appropriate policy options. In the context of ad hoc policy and academic neglect; Casey, Melton and Wyndham are the three major urban peripheral local government areas in Victoria that are profiled in this paper. They serve as examples in examining incoherence of policy and then analysing the elements that are needed for effective and strong peripheral growth centres that could propel these centres towards efficient and equitable liveable communities. A broad composite model of regional economic development is used to examine the attendant problems in these urban centres and the various viable policy options for addressing these problems. In the process, this paper aims to provide a basis for further rigorous academic investigation of peripheral urban growth centres in Australia and, arising from this, more coherent policies for the economic development of such centres.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

Efforts to increase fruit and vegetable consump­tion are a significant aspect of national approaches to preventive health. However, policy frameworks for increasing fruit and vegetable consumption rarely take an integrated food-systems approach that includes a focus on production. In this policy analysis and commentary we examine fruit and vegetable production in peri-urban areas of Melbourne in Victoria, Australia, and highlight the significance of emerging environmental and eco­nomic pressures on fruit and vegetable production. This examination will be of interest to other locations around the world also experiencing pressure on their peri-urban agriculture. These pressures suggest that the availability and afforda­bility of fruit and vegetable supplies cannot be taken for granted, and that future initiatives to increase fruit and vegetable consumption should include a focus on sustainable production. Threats to production that include environmental pressures, together with the loss and cost of peri-urban agri­cultural land and a cost-price squeeze due to rising input costs and low farm-gate prices, act in combi­nation to threaten the viability of the Victorian fruit and vegetable industries. We pro­pose that policy initiatives to increase fruit and vegetable consumption should include measures to address the pressures facing production, and that the most effective policy responses are likely to be integrated approaches that aim to increase fruit and vegetable availability and affordability through innovative solutions to problems of production and distribu­tion. Some brief examples of potential integrated policy solutions are identified to illu­strate the possibilities and stimulate discussion.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

The most important crises in the planning system is related to the significance of "capitalist state" influences [3]. In the global context, Bengs states that there is a matter partiality between "global capitalism" and "national democracy"[4]. Bengs stresses that planning is closely related to the economy of a country, which is in one side the government wants to reduce taxes, while on the other side there is a dilemma of the global and indefinite solicitation of assets. Hall (2002) discusses the problems of the city; those are city planning, history of planning, and geographical setting. City planning is not only planning in one region but also including the district around the city, such as river basin and a certain regional culture. The urban planner should involve all those aspects in the city planning. Friedmann (2003) distinguishes planning theory into three types. First, planning theory is related to planning in particular fields such as land utilization, transportation, urban design, regional development, environmental planning etc. Second, the type of theory related to planning tout court, and the third type is the theory about planning itself. Sanyal (2002) states that although planners have limited autonomy, their actions affect policy result [5]. Friedman (2003) supports Sanyal's argument stressing that planners learned from their actions not from theories.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

Religion and Urbanism contributes to an expanded understanding of 'sustainable cities' in South Asia by demonstrating the multiple, and often conflicting ways in which religion enables or challenges socially equitable and ecologically sustainable urbanisation in the region. In particular, this collection focuses on two aspects that must inform the sustainable cities discourse in South Asia: the intersections of religion and urban heritage, and religion and various aspects of informality.

This book makes a much-needed contribution to the nexus between religion and urban planning for researchers, postgraduate students and policy makers in Sustainable Development, Development Studies, Urban Studies, Religious Studies, Asian Studies, Heritage Studies and Urban and Religious Geography.