scholarly journals Comparison on Turn Costs in Accessibility Models. Case Study: Manizales, Colombia

2018 ◽  
Vol 12 (8) ◽  
pp. 59
Author(s):  
Santiago Cardona ◽  
Diego Escobar ◽  
Carlos Moncada

The transport models have taken great relevance in the last decades because they help to make big urban planning decisions. In this sense, supply models, such as global average accessibility, seek to approach more and more to reality in order to represent it in the best possible way. In this research article, we compare the different penalties for turns used in the global average accessibility models in the city of Manizales, being compared with the preliminary results of a research thesis in which the penalties for turns were calculated by means of an empirical methodology that analyzes different road intersections in the city. At the end, the savings gradient method is used to measure the differences between the different calculated scenarios.

One Ecosystem ◽  
2018 ◽  
Vol 3 ◽  
pp. e25477 ◽  
Author(s):  
Chiara Cortinovis ◽  
Davide Geneletti

This study explores the use of ecosystem service (ES) knowledge to support urban planning in the assessment of future scenarios. The case study concerns the prioritszation of brownfield regeneration interventions in the city of Trento (Italy). Alternative planning scenarios considering the conversion of existing brownfields into new urban parks are assessed and compared. The assessment focuses on two ES of critical importance for the city, namely microclimate regulation and nature-based recreation. The benefits of the different scenarios are quantified based on the number of expected beneficiaries broken down into different vulnerability classes and then compared through a multi-criteria analysis. Three combinations of criteria and weights reflect different planning objectives and related decision-makers’ orientations about what ES and beneficiary groups should be prioritised. The application demonstrates the potential for ES assessments to support urban planning processes in the specific phase of assessment and selection of alternatives, by meeting the requirements in terms of both sensitivity to small-scale changes in land uses or management activities and capacity to capture simultaneous variations in supply and demand of multiple ES. Being coherent with socially-orientated planning objectives, indicators based on ES demand and beneficiaries can effectively convey information about ES in planning decisions. Multi-criteria analysis is an effective way to integrate multiple ES assessments with other information about costs and benefits of planning scenarios, exploring diverse stakeholder perspectives and balancing competing objectives in a rational and transparent way.


2021 ◽  
pp. 245592962110479
Author(s):  
Samriti Singh

Identity of a place changes due to rapid modern alterations in a city. There are various factors leading to these changes in the identity of a place. This research article investigates those factors through the physical mapping technique through the case study of the city, Shimla. The article delves into how the city of Shimla was formed as a British summer capital of India and has evolved its character and identity into a state capital. Components of identity of a place are explored and those components are applied to find the identity of Shimla on the basis of three major nodes of the city with important government offices. The components used to find the identity of the city are—historical layers of the structures, take of social community towards them, the components of the built form of the major nodes and activities performed at the nodes. The identity of a place is investigated by integrating all the aspects of the physical components associated with the major activity nodes extracted from the history and evolution of the city. Multiple ways of looking into physical spatial components of the nodes led to define the predominant factors to form the identity of the city.


2015 ◽  
Vol 29 (1) ◽  
pp. 11-26 ◽  
Author(s):  
Richelle Clark ◽  
Laura Misener

This study investigates the underdeveloped area of event portfolios in an attempt to fill a gap in the existing literature. This research article examines strategic positioning of events and the critical role they play in local development. To understand this, a case study design was performed in a medium-sized city in Canada. The purpose of the study was to determine how the city has used sport events for broader local development and enhancement of the civic brand. Interviews with local city actors and document analyses were used to further understand the strategies within the community. The results show that although a city may possess the necessary portfolio components as per Ziakas & Costa (2011), it is essential that there is a strategy that bridges the pieces of the portfolio for sustainable development. Consequently, we found that sequencing, or the strategic timing of events and political grounds, played a crucial role in this process.


2020 ◽  
Vol 14 (1) ◽  
pp. 143-153
Author(s):  
Marco Guerrieri ◽  
Matteo Sartori

Background: Roundabouts eliminate some of the most complex and dangerous aspects of traditional at-grade road intersections. In recent times, novel two-level roundabout layouts have been proposed (i.e. target-roundabout and four-flyover roundabout). Nevertheless, no research on underground roundabouts is available. This paper analyzed the underground roundabout planned in the city of Trento (Italy). Objective: The paper examines an underground roundabout in an urban context, planned with the purpose of alleviating traffic congestion in the city of Trento (Italy). Four different layouts have been studied. Methods and Results: This study was conducted with the help of traffic microsimulation in the AIMSUN environment. The traffic model was calibrated using GEH index. The simulated queues are significantly close to the real queues measured in the year 2020. Conclusion: Underground roundabout can reduce queues, travel times, fuel consumption, air pollutant emissions etc. This particular type of roundabout could be used in urban contexts with a traffic demand and congestion problems comparable to those of the present study.


2012 ◽  
Vol 209-211 ◽  
pp. 1021-1024
Author(s):  
Zhong Bo Liu ◽  
Zhao Sheng Yang

According to the conditions of traffic flow and geometric characteristics of road intersections, a novel method is proposed to determine the sight distance triangle with the consideration of crossing intervals and traffic volume on the secondary road. Then the control mode is suggested for general plane intersections. In final, a simulation example in the city of Changchun is used to verify the effectiveness and performance of this traffic control mode model.


2020 ◽  
Vol 4 (1) ◽  
pp. 30-43
Author(s):  
Saras Ayu Faradita ◽  
Vinky Rahman

The fire incident in karaoke buildings in Indonesia which claimed many lives has occurred several times. According to the National Academy of Science US, the smoke toxins that come out of the fire disaster cause 50-80% of deaths. Refers to the data, it is necessary to check further about the building material response to fire during a fire incident. Masterpiece Signature Karaoke is a karaoke building that classified as large and magnificent in the city of Medan which has various material so that it is necessary to study the interior material as passive fire protection. The purpose is to find out how to assess the reliability of fire passive protection regard to the interior materials and recommendations or descriptions of right interior material planning using the Analytical Hierarchy Process (AHP). This method is efficacious to solve the problem of reliability in using interior materials as passive fire protection in Masterpiece Signature Family KTV Medan building with the results of an Adequate Level of reliability. Then, design recommendations were given for the use of interior materials in karaoke building to improve the reliability results to be better.The results are useful as information for other researchers and karaoke buildings regarding passive fire protection systems at the Masterpiece Signature Family KTV Medan.


2018 ◽  
Vol 12 (1) ◽  
pp. 26-36 ◽  
Author(s):  
Richard B. Apgar

As destination of choice for many short-term study abroad programs, Berlin offers students of German language, culture and history a number of sites richly layered with significance. The complexities of these sites and the competing narratives that surround them are difficult for students to grasp in a condensed period of time. Using approaches from the spatial humanities, this article offers a case study for enhancing student learning through the creation of digital maps and itineraries in a campus-based course for subsequent use during a three-week program in Berlin. In particular, the concept of deep mapping is discussed as a means of augmenting understanding of the city and its history from a narrative across time to a narrative across the physical space of the city. As itineraries, these course-based projects were replicated on site. In moving from the digital environment to the urban landscape, this article concludes by noting meanings uncovered and narratives formed as we moved through the physical space of the city.


2013 ◽  
Vol 62 (1) ◽  
pp. 67-84
Author(s):  
Anna Trembecka

Abstract Amendment to the Act on special rules of preparation and implementation of investment in public roads resulted in an accelerated mode of acquisition of land for the development of roads. The decision to authorize the execution of road investment issued on its basis has several effects, i.e. determines the location of a road, approves surveying division, approves construction design and also results in acquisition of a real property by virtue of law by the State Treasury or local government unit, among others. The conducted study revealed that over 3 years, in this mode, the city of Krakow has acquired 31 hectares of land intended for the implementation of road investments. Compensation is determined in separate proceedings based on an appraisal study estimating property value, often at a distant time after the loss of land by the owner. One reason for the lengthy compensation proceedings is challenging the proposed amount of compensation, unregulated legal status of the property as well as imprecise legislation. It is important to properly develop geodetic and legal documentation which accompanies the application for issuance of the decision and is also used in compensation proceedings.


2019 ◽  
Vol 16 (1-2) ◽  
pp. 153-179
Author(s):  
Angie Chung ◽  
Johng Song ◽  
Carolyn Choi

Based on the experiences of a Koreatown scholar, the executive director of a Koreatown nonprofit, and a longtime resident student, the article advocates for greater attention to the complex and dynamic power structures of ethnic enclaves in community-academic partnerships. We discuss the changing landscapes of Koreatown as the global nexus of the Pacific Rim economy, the city of Los Angeles’s urban redevelopment plans, and growing diversity and inequality. Programs that aim to engage effectively with ethnic communities must reassess how knowledge is produced and conveyed, how we structure partnerships within stratified communities, and how to grow from issue-based partnerships to broader communities of interest.


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