scholarly journals Scenario Analyses of Exhaust Emissions Reduction through the Introduction of Electric Vehicles into the City

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 2030
Author(s):  
Marianna Jacyna ◽  
Renata Żochowska ◽  
Aleksander Sobota ◽  
Mariusz Wasiak
Keyword(s):  
Inner City ◽  
Electric Vehicles ◽  
Transport Model ◽  
Exhaust Emissions ◽  
Scenario Analyses ◽  
High Emission ◽  
Clean Air ◽  
The One ◽  
The City

In recent years, policymakers of urban agglomerations in various regions of the world have been striving to reduce environmental pollution from harmful exhaust and noise emissions. Restrictions on conventional vehicles entering the inner city are being introduced and the introduction of low-emission measures, including electric ones, is being promoted. This paper presents a method for scenario analysis applied to study the reduction of exhaust emissions by introducing electric vehicles in a selected city. The original scenario analyses relating to real problems faced by contemporary metropolitan areas are based on the VISUM tool (PTV Headquarters for Europe: PTV Planung Transport Verkehr AG, 76131 Karlsruhe, Germany). For the case study, the transport model of the city of Bielsko-Biala (Poland) was used to conduct experiments with different forms of participation of electric vehicles on the one hand and traffic restrictions for high emission vehicles on the other hand. Scenario analyses were conducted for various constraint options including inbound, outbound, and through traffic. Travel time for specific transport relations and the volume of harmful emissions were used as criteria for evaluating scenarios of limited accessibility to city zones for selected types of vehicles. The comparative analyses carried out showed that the introduction of electric vehicles in the inner city resulted in a significant reduction in the emission of harmful exhaust compounds and, consequently, in an increase in the area of clean air in the city. The case study and its results provide some valuable insights and may guide decision-makers in their actions to introduce both driving ban restrictions for high-emission vehicles and incentives for the use of electric vehicles for city residents.

scholarly journals A Case Study: Simulation Traffic Model as a Tool to Assess One-Way vs. Two-Way Traffic on Urban Roads around the City Center

2021 ◽  
Vol 11 (11) ◽  
pp. 5018
Author(s):  
Peter Bindzar ◽  
Janka Saderova ◽  
Marian Sofranko ◽  
Peter Kacmary ◽  
Jaroslaw Brodny ◽  
...  
Keyword(s):  
Traffic Engineering ◽  
Transport Model ◽  
Slovak Republic ◽  
Simulation Models ◽  
Historic Center ◽  
Transport Organization ◽  
Before And After ◽  
The One ◽  
The City

This article evaluates changes in the organization of transport on urban roads through the transport model in the OmniTRANS program. The selected location for the case study in this article is the internal traffic circuit of Kosice, which borders the historic core of the city. Currently, the proposal is being prepared to change the organization of transport in the town’s monument reserve and its protection zone. The transition to a one-way road around the historic center is being considered. Before introducing the new proposed change in traffic, it is necessary to test this proposed change and determine how it will affect the traffic situation. The aim of this article is to compare the current transport organization with the proposed change in transport organization in terms of traffic intensity. The use of transport models in the world is not a new concept, but it is often not used in the conditions of the Slovak Republic. However, traffic and simulation models can save money and time and avoid possible unexpected problems before putting the proposed changes into practice. Solving the given problem is an excellent benefit for transport planning and traffic engineering for Kosice and other places with a similar arrangement of the historical center and a similar number of inhabitants. The proposed changes can be tested by modelling traffic and then to adjust them when the cons are identified. Thanks to the traffic simulation model, it is possible to compare the capacity load of the inner traffic circuit of the city before and after the introduction of the one-way circuit.

scholarly journals The (No-)Public Space. Reviewing the Transformation of Al-Qaed Ibrahim's Urban Image

2020 ◽  
pp. 177-192
Author(s):  
Iman Hegazy
Keyword(s):  
Public Space ◽  
Public Spaces ◽  
The Political ◽  
Urban Image ◽  
Political Conflicts ◽  
Political Events ◽  
The One ◽  
The Impact ◽  
The City

Public spaces are defined as places that should be accessible to all inhabitants without restrictions. They are spaces not only for gathering, socializing and celebrating but also for initiating discussions, protesting and demonstrating. Thus, public spaces are intangible expressions of democracy—a topic that the paper tackles its viability within the context of Alexandria, case study Al-Qaed Ibrahim square. On the one hand, Al-Qaed Ibrahim square which is named after Al-Qaed Ibrahim mosque is a sacred element in the urban fabric; whereas on the other it represents a non-religious revolutionary symbol in the Alexandrian urban public sphere. This contradiction necessitates finding an approach to study the characteristic of this square/mosque within the Alexandrian context—that is to realize the impact of the socio-political events on the image of Al-Qaed Ibrahim square, and how it has transformed into a revolutionary urban symbol and yet into a no-public space. The research revolves around the hypothesis that the political events taking place in Egypt after January 25th, 2011, have directly affected the development of urban public spaces, especially in Alexandria. Therefore methodologically, the paper reviews the development of Al-Qaed Ibrahim square throughout the Egyptian socio-political changes, with a focus on the square’s urban and emotional contextual transformations. For this reason, the study adheres to two theories: the "city elements" by Kevin Lynch and "emotionalizing the urban" by Frank Eckardt. The aim is not only to study the mentioned public space but also to figure out the changes in people’s societal behaviour and emotion toward it. Through empowering public spaces, the paper calls the different Egyptian political and civic powers to recognize each other, regardless of their religious, ethnical or political affiliations. It is a step towards replacing the ongoing political conflicts, polarization, and suppression with societal reconciliation, coexistence, and democracy.

scholarly journals The city as a theatre of characters. John Hejduk’s Masques

2021 ◽  
Vol 9 (2) ◽  
pp. 51
Author(s):  
Luca Cardani
Keyword(s):  
Design Research ◽  
Strong Connection ◽  
Theoretical Design ◽  
In Series ◽  
Place Of Origin ◽  
The One ◽  
The City ◽  
General Work ◽  
Different Parts

The architectural work of John Hejduk (1929-2000) is marked by theoretical-design research, collected in series with titles and periods. Among these series the one entitled Masques, developed since about 1979, can be considered the nucleus of his research on the architecture of the city and the place of origin of his language of construction later developed in his realized buildings. This paper analyses the dense network of references and analogies established by Hejduk to create his Masques, trying to fix its origin in the idea of the city as a theatre of characters composed of architecture. Starting from the name chosen for the title of this series, the paper tries to trace the threads that lead from the general work of the various projects of the Masques series, to the reflections and ideas that produced it. Then, it comes back again to the observation of architecture and of a case study (Security, 1989), to understand and explain its meaning and the compositional methods involved into the process of genesis of form. Through the entire work named Masques, and its recognizable link with the buildings and installation realized around the world, Hejduk has built an archive of architectural prototypes ready to construct different parts of the city, thus highlighting the strong connection that his work establishes with reality in order "to conceive it, represent it and finally realize it".

scholarly journals THE FUNCTIONS AND SYMBOLISM OF CHINESE MINARETS: A CASE STUDY OF THE HUAISHENG GUANGTA

2020 ◽  
Vol 6 (2) ◽  
pp. 68-76
Author(s):  
Hamada Muhammed Hagras
Keyword(s):  
Chinese Society ◽  
Muslim Community ◽  
Religious Minority ◽  
Architectural Form ◽  
Historical Texts ◽  
Religious Symbolism ◽  
The One ◽  
And Function ◽  
The City

The Huisheng mosque in Guangzhou is one of China's oldest mosques; its initial construction dates back to 627. The minaret of the mosque is one of the surviving earliest examples of Islamic architecture in China. The Chinese minarets were built with a form of a wooden low-rise Chinese pavilion. In the case of Guangta, it was built by brick directly on the street with such a great height. The unique architectural form of Guangta raises many questions about its location, architecture, and function. The study traces the historical texts of the minaret to clarify its historical functions. It attempts to understand the minaret's meanings, the hidden symbolism, and its historical roles to serve the Muslim community as a religious minority in the city, on the one hand, as well as its cultural contributions on the other hand. There are several methods to achieve its objectives: the historical, the descriptive, and the comparative analytical approach. These approaches proved that the minaret played many roles associated with its form and architecture. In addition to its religious functions, it is entrusted to inform Muslims at prayer times. The minaret was also used as a control tower if the Muslim community in the city was exposed to external or internal threats and served as a lighthouse to facilitate Muslim maritime trade. Further, it carried a religious symbolism as it was a symbol of Islam itself within the local Chinese society that was not ruled by Muslims. 

Transformative city branding and the evolution of the entrepreneurial city: The case of ‘Brand New Helsinki’

Urban Studies ◽  
2019 ◽  
Vol 57 (10) ◽  
pp. 2031-2046
Author(s):  
Salla Jokela
Keyword(s):  
Urban Policy ◽  
The Other ◽  
City Branding ◽  
Differentiation Strategy ◽  
Other Hand ◽  
Entrepreneurial City ◽  
Scholarly Discussion ◽  
The One ◽  
The City

There have been two types of scholarly discussion on city branding. On the one hand, city branding has been conceptualised as a differentiation strategy of entrepreneurial cities involved in interspatial competition. On the other hand, researchers have recently emphasised the need to pay attention to increasingly pervasive and transformative forms of city branding, including branding as an urban policy and a form of planning. Drawing on a case study carried out in Helsinki, Finland, this article connects these two approaches by analysing Helsinki’s recent city branding endeavour in the context of the qualitative transformation of the entrepreneurial city. The article shows how city branding highlights and constitutes the city as an entrepreneurial platform and enabler bound up by the extended entrepreneurialisation of society.

scholarly journals Serious Games, Mental Images, and Participatory Mapping: Reflections on a Set of Enabling Tools for Capacity Building

Informatics ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 7 ◽  
Author(s):  
Teodora Iulia Constantinescu ◽  
Oswald Devisch
Keyword(s):  
Capacity Building ◽  
Capability Approach ◽  
Building Process ◽  
Participatory Processes ◽  
Urban Transformations ◽  
The One ◽  
The Impact ◽  
The City ◽  
The Capability Approach

Increasing complexity of societal questions requires participatory processes that engage with capable participants. We adopted Horellis’ stance on participation as not an isolated event but a constant communication between different groups that can be assured by using enabling tools. We applied the Capability Approach to frame a capacity-building process and understand how this framework can support a collective of entrepreneurs to become aware of their capabilities (and the impact of an ongoing urban renewal process on these capabilities). The Capability Approach emphasizes the personal and structural conditions that impact a person’s capability to choose—the conditions that affect the process of determining what a person values. The paper builds on a two year capacity-building process conducted in Genk, Belgium, and proposes a conceptual framework for building capacities, in which the process and outputs collide with ideas of choice, ability, and opportunity, notions central to the Capability Approach. The case study looks at one of the main commercial streets of the city (Vennestraat) and reflects on a set of enabling artefacts used to engage proprietors in the capacity-building process. This capacity-building process, characterized by the idea of space and capabilities, advances a critical viewpoint on issues related to participatory processes and gives practitioners a set of enabling tools to start a conversation over complex urban transformations, such as the one in Vennestraat.

scholarly journals Road Test-Based Electric Bus Selection: A Case Study of the Nanjing Bus Company

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1253
Author(s):  
Jian Gong ◽  
Jie He ◽  
Cheng Cheng ◽  
Mark King ◽  
Xintong Yan ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Test Method ◽  
Selection Methods ◽  
Road Test ◽  
The Road ◽  
Structure Selection ◽  
Electric Bus ◽  
The City ◽  
Selection Of

Globally, the use of electric vehicles, and in particular the use of electric buses, has been increasing. The city of Nanjing leads China in the adoption of electric buses, supported by city policies and infrastructure. To lower costs and provide a better service, vehicle selection is crucial, however, existing selection methods are limited. Accordingly, Nanjing Bus Company developed a test method based on road tests to select a bus. This paper presents a detailed description of the test method and a case study of its application. The method included an organization structure, selection of eight test vehicles (four 10 m length, four 8 m length) from four brands (a total of 32 test vehicles), selection of indicators and selection of routes. Data was collected from repeated drives by 65 drivers over an 8-week period. Indicators included power consumption, charging duration, failure duration and driving distance. It is concluded that the road test method designed and conducted by the Nanjing Bus Company provides a good framework for the selection of pure electric buses. Furthermore, subsequent experience with selected buses supports the validity and value of the model.

scholarly journals Environmental and Climate Dilemma: Coal for Heating or Clean Air for Breathing: A Case of Prishtina

2019 ◽  
Vol 23 (1) ◽  
pp. 41-51
Author(s):  
Bujar Bajcinovci
Keyword(s):  
Power Plants ◽  
Actual State ◽  
Coal Processing ◽  
Global Issue ◽  
Research Findings ◽  
Clean Air ◽  
Environmental Measures ◽  
The Stability ◽  
The One ◽  
The City

Abstract Air pollution as a global issue is an essential health problem, faced by millions of people all over the world. It is a huge problem encountered by the citizens of the city of Prishtina, too. The benefit from the cheapest forms of energy, that generated from coal-fired power plants, and the one derived from the low financial cost, raises the question: do we have to compensate this energy with our health? This paper presents the analysis of the emanations, such are coal-fired power plants in the vicinity of the city of Prishtina, and aims to determine the accepted level and health framework boundaries for coal-fired power plants and coal processing activities. The research methods consist of empirical observations and data analysis on health degradation, environmental and greenhouse gas contribution to the climate change. The actual state of energy production is not the most effective pathway to the stability of basic load for energy. Hence, the debate focused around environment tends to fail the essential need for supplying Kosovo with electricity, something for which power plants are suitable. Unfortunately, with all our environmental stubborn beliefs, renewable sources such as sun and wind are not, in the present efficiency for Kosovo. The present hazardous air quality requires well defined lawful steps and activities. Thus, the research findings recommend and promote precise immediate environmental measures.

The Bolotnaya Square: Urban Design in Moscow between social activities and political protests

2015 ◽  
Author(s):  
Evgenia Abramova
Keyword(s):  
Urban Design ◽  
Urban Structure ◽  
Political Protest ◽  
Social Activities ◽  
Public Place ◽  
Political Protests ◽  
The One ◽  
The City ◽  
Political Actions

The article is aimed to explore the so-called Turn to the City in Moscow, as a part of which the city has experienced a growth of interest in the redevelopment of the post-Soviet urban structure; and urban design is considered one of the tools of this redevelopment. On the one hand, the turn to urban design is based on the attention to public, green, and pedestrian places and social activities within these places; on the other hand, it is able to undermine the power of oppositional movements in the city, which also take place on the redeveloped sites. These contradictions between social activities and political protest are analyzed in the case study of the Bolotnaya Square, which became widely famous as a public place during the political actions of 2011- 2012.

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