scholarly journals Study on Vibration Reduction Method for a Subway Station in Soft Ground

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Xian-Feng Ma ◽  
Ning-Ning Feng ◽  
Guo-Bo Wang ◽  
Xu Fang
Keyword(s):  
Urban Areas ◽  
Rapid Development ◽  
Vibration Reduction ◽  
Subway Station ◽  
Soft Ground ◽  
Environment Impact ◽  
Adjacent Structures ◽  
Vibration Attenuation ◽  
Materials Used

With the rapid development of metro system in urban areas, vibration and its impact on adjacent structures caused by metro operation have drawn much attention of researches and worries relating to it have risen. This paper analyzed the vibration attenuation and the environment impact by a case study of a subway station in soft ground with adjacent laboratory building. A method of setting a compound separation barrier surrounding the station is checked and different materials used in the barrier have been tried and tested through numerical analysis. Key parameters of the material and the effects of vibration reduction are studied with the purpose that similar methodology and findings can be referenced in future practices.

scholarly journals Issues and Problems Faced by Rural Farmers in Paddy Cultivation: A Case Study of the Iban Paddy Cultivation in Kuala Tatau, Sarawak

2017 ◽  
Vol 1 (2) ◽  
pp. 174
Author(s):  
Daniel Ugih Echoh ◽  
Norizan Md Nor ◽  
Salfarina Abdul Gapor ◽  
Tarmiji Masron
Keyword(s):  
Urban Areas ◽  
Agricultural Land ◽  
Irrigation System ◽  
Rapid Development ◽  
Group Discussion ◽  
Great Distance ◽  
Rice Farmers ◽  
Depth Interview ◽  
Paddy Cultivation

Rice is an important staple food in Asia. However, modernization and rapid development have reduced and threatened the practice, especially maintaining traditional hill rice cultivation, as in this case study by the Iban in Kuala Tatau located in the largest state in Malaysia, called Sarawak. It is important to understand the problems and challenges of this issue to ensure food security among the rural population in Sarawak, particularly the Iban. Therefore, this paper aims to discuss the issues and problems faced by rice farmers in Kuala Tatau, Sarawak. The respondents were Iban farmers in Kuala Tatau; named Sungai Semanok and Kuala Serupai, were selected as it is at a great distance from urban areas named Bintulu, and they still practices paddy cultivation. For the purpose of obtaining the data, qualitative research methods through in-depth interview techniques, group discussion and observation were utilized and the data were analyzed using content analysis. The results showed that the rice sector faced major problems such as the decrease of the number of farmers and a weak system in the distribution of subsidies. However, there were differences shown in results between the two villages as well, which were in term of inadequate agricultural land, and issues on drainage and irrigation system, depending on the distance of the village from urban area, transport facilities, and other issues as discussed in the following section.

scholarly journals Key Techniques and Risk Management for the Application of the Pile-Beam-Arch (PBA) Excavation Method: A Case Study of the Zhongjie Subway Station

2014 ◽  
Vol 2014 ◽  
pp. 1-16 ◽  
Author(s):  
Yong-ping Guan ◽  
Wen Zhao ◽  
Shen-gang Li ◽  
Guo-bin Zhang
Keyword(s):  
Urban Areas ◽  
Risk Mitigation ◽  
Environmental Safety ◽  
Mitigation Measures ◽  
Subway Station ◽  
Factors Affecting ◽  
Construction Techniques ◽  
Potential Risks ◽  
Key Techniques

The design and construction of shallow-buried tunnels in densely populated urban areas involve many challenges. The ground movements induced by tunneling effects pose potential risks to infrastructure such as surface buildings, pipelines, and roads. In this paper, a case study of the Zhongjie subway station located in Shenyang, China, is examined to investigate the key construction techniques and the influence of the Pile-Beam-Arch (PBA) excavation method on the surrounding environment. This case study discusses the primary risk factors affecting the environmental safety and summarizes the corresponding risk mitigation measures and key techniques for subway station construction using the PBA excavation method in a densely populated urban area.

Factors Affecting Financial Literacy of Vietnamese Adults: A Case Study for Hanoi and Nghe An

2017 ◽  
Vol 33 (2) ◽  
Author(s):  
Tue Nguyen Dang
Keyword(s):  
Higher Education ◽  
Multiple Regression ◽  
Financial Literacy ◽  
Urban Areas ◽  
Logistic Models ◽  
Factors Affecting ◽  
Financial Behaviors ◽  
Financial Decisions ◽  
Literacy Level

This research examines the factors affecting the financial literacy of Vietnamese adults. Using a sample of 266 observations of adults in 2 big cities in Vietnam (Hanoi and Vinh in Nghe An Province), the author evaluates the literacy level of adults in these urban areas. The financial literacy of the interviewed people is low. The multiple regression results show that lower financial literacy levels associate with higher age and married status and higher financial literacy levels associate with higher education, more family members, the person making financial decisions and the person attending a useful financial course. This research also explores the association between financial literacy and financial behaviors of individuals employing logistic models. It is found that higher financial literacy associates with less probability of overspending and higher probability of saving money and careful spending. Higher financial literacy is also found to associate with higher probability of opening a savings account and making various investments. 

Language Movement and Civil War in West Africa

2018 ◽  
Author(s):  
Ericka A. Albaugh
Keyword(s):  
Civil War ◽  
Sierra Leone ◽  
Citizen Participation ◽  
Urban Areas ◽  
Political Process ◽  
The Political ◽  
Political Consequences ◽  
Language Spread ◽  
The 1960S

This chapter examines how civil war can influence the spread of language. Specifically, it takes Sierra Leone as a case study to demonstrate how Krio grew from being primarily a language of urban areas in the 1960s to one spoken by most of the population in the 2000s. While some of this was due to “normal” factors such as population movement and growing urbanization, the civil war from 1991 to 2002 certainly catalyzed the process of language spread in the 1990s. Using census documents and surveys, the chapter tests the hypothesis at the national, regional, and individual levels. The spread of a language has political consequences, as it allows for citizen participation in the political process. It is an example of political scientists’ approach to uncovering the mechanisms for and evidence of language movement in Africa.

Using the private finance initiative for energy efficiency projects at the urban scale

2016 ◽  
Vol 10 (1) ◽  
pp. 99-117 ◽  
Author(s):  
Alberto De Marco ◽  
Giulio Mangano ◽  
Fania Valeria Michelucci ◽  
Giovanni Zenezini
Keyword(s):  
Energy Efficiency ◽  
Urban Areas ◽  
Light Emitting Diode ◽  
Project Finance ◽  
Private Finance Initiative ◽  
Content Type ◽  
Light Emitting ◽  
Alternate Forms ◽  
Private Investors

Purpose – The purpose of this paper is to suggest the usage of the project finance (PF) scheme as a suitable mechanism to fund energy efficiency projects at the urban scale and present its advantages and adoption barriers. Design/methodology/approach – A case study is developed to renew the traffic lighting system of an Italian town via replacement of the old lamps with new light-emitting diode (LED) technology. Several partners are involved in the case project to construct a viable PF arrangement. Findings – The case study presents the viability of the proposed PF scheme that provides for acceptable financial returns and bankability. However, it also shows that the need for short concession periods may call for a public contribution to the initial funding to make the project more attractive to private investors. Practical implications – This case study is a useful guideline for governments and promoters to using the PF arrangement to fund energy efficiency investments in urban settings. It helps designing an appropriate PF scheme and understanding the advantages of PF to reduce risk and, consequently, increase the debt leverage and profitability of energy efficiency projects. Originality/value – This paper contributes to bridging the gap about the lack of works addressing the implementation of the PF mechanism in the energy efficiency sector in urban areas. The importance of this paper is also associated with the shortage of traditional public finance faced by many cities that forces to seek for alternate forms of financing.

scholarly journals Multi-Criteria, Co-Evolutionary Charging Behavior: An Agent-Based Simulation of Urban Electromobility

2021 ◽  
Vol 12 (1) ◽  
pp. 18
Author(s):  
Lennart Adenaw ◽  
Markus Lienkamp
Keyword(s):  
Urban Areas ◽  
City Planning ◽  
User Behavior ◽  
Transport Sector ◽  
Simulation Framework ◽  
Agent Based Simulation ◽  
Agent Based ◽  
Charging Station ◽  
Spatio Temporal

In order to electrify the transport sector, scores of charging stations are needed to incentivize people to buy electric vehicles. In urban areas with a high charging demand and little space, decision-makers are in need of planning tools that enable them to efficiently allocate financial and organizational resources to the promotion of electromobility. As with many other city planning tasks, simulations foster successful decision-making. This article presents a novel agent-based simulation framework for urban electromobility aimed at the analysis of charging station utilization and user behavior. The approach presented here employs a novel co-evolutionary learning model for adaptive charging behavior. The simulation framework is tested and verified by means of a case study conducted in the city of Munich. The case study shows that the presented approach realistically reproduces charging behavior and spatio-temporal charger utilization.

scholarly journals New insights to assess the consolidation of stone materials used in built heritage: the case study of ancient graffiti (Tituli Picti) in the archaeological site of Pompeii

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Silvestro Antonio Ruffolo ◽  
Natalia Rovella ◽  
Anna Arcudi ◽  
Vincenza Crupi ◽  
Domenico Majolino ◽  
...  
Keyword(s):  
Archaeological Site ◽  
Built Heritage ◽  
Stone Materials ◽  
Materials Used

scholarly journals Challenges and Barriers for Net‐Zero/Positive Energy Buildings and Districts—Empirical Evidence from the Smart City Project SPARCS

Buildings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 78
Author(s):  
Daria Uspenskaia ◽  
Karl Specht ◽  
Hendrik Kondziella ◽  
Thomas Bruckner
Keyword(s):  
Smart City ◽  
Urban Areas ◽  
Smart Cities ◽  
Scale Up ◽  
Practical Experience ◽  
Positive Energy ◽  
Low Carbon ◽  
Net Zero ◽  
Multidimensional Representation

Without decarbonizing cities energy and climate objectives cannot be achieved as cities account for approximately two thirds of energy consumption and emissions. This goal of decarbonizing cities has to be facilitated by promoting net-zero/positive energy buildings and districts and replicating them, driving cities towards sustainability goals. Many projects in smart cities demonstrate novel and groundbreaking low-carbon solutions in demonstration and lighthouse projects. However, as the historical, geographic, political, social and economic context of urban areas vary greatly, it is not always easy to repeat the solution in another city or even district. It is therefore important to look for the opportunities to scale up or repeat successful pilots. The purpose of this paper is to explore common trends in technologies and replication strategies for positive energy buildings or districts in smart city projects, based on the practical experience from a case study in Leipzig—one of the lighthouse cities in the project SPARCS. One of the key findings the paper has proven is the necessity of a profound replication modelling to deepen the understanding of upscaling processes. Three models analyzed in this article are able to provide a multidimensional representation of the solution to be replicated.

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