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. 

scholarly journals MITIGATION SCENARIOS FOR RESIDENTIAL FIRES IN DENSELY POPULATED URBAN SETTLEMENTS IN SUKAHAJI VILLAGE, BANDUNG CITY

2016 ◽  
Vol 3 (2) ◽  
pp. 147
Author(s):  
Saut Aritua Hasiholan Sagala ◽  
Praditya Adhitama ◽  
Donald Ganitua Sianturi ◽  
Umar Al Faruq
Keyword(s):  
Urban Areas ◽  
Total Population ◽  
Sampling Technique ◽  
Mitigation Measures ◽  
Mitigation Scenarios ◽  
Intervention Measures ◽  
Residential Fires ◽  
Urban Settlements ◽  
Structural Fires

Residential fires are a form of disaster that often occurs in urban areas especially in densely populated settlements. This study looks at possible mitigation scenarios for this kind of disaster. A case study was conducted in Babakan Ciparay Sub-District in Bandung City, among the densely populated settlements, and was focused especially on Sukahaji Village, a sub-unit of Babakan Ciparay, which is the most densely populated village in Bandung City with up to 234.14 people/ha. There have been six structural fires recorded from 2007 until 2010 occurring in Sukahaji. This study applied stratified random sampling as the preferred sampling technique and data collection method from a total population of 3,227 buildings. The data was then examined using risk analysis. The results have led to two intervention measures suggested as mitigation scenarios for residential fires that can be applied within the Sukahaji Village. The study concludes that mitigation measures through strengthening community capacity can be the principal option in reducing risk to fires in densely populated urban settlements.

Design and construction risks in BOT type mega transportation projects

2019 ◽  
Vol 26 (10) ◽  
pp. 2223-2242 ◽  
Author(s):  
Hande Aladağ ◽  
Zeynep Işık
Keyword(s):  
Risk Factors ◽  
Risk Mitigation ◽  
Lessons Learned ◽  
Mitigation Measures ◽  
Occupational Accidents ◽  
Content Type ◽  
Transportation Projects ◽  
Construction Risks ◽  
Design And Construction

Purpose In build-operate-transfer (BOT) transportation projects, design and construction phases are critical in terms of their effect on time and cost overruns. The purpose of this paper is to identify the role of risk factors affecting these phases and their significance level for BOT transportation projects. Design/methodology/approach Design and construction risks were determined and then validated by focus group discussions. Afterwards, an illustrated case study was presented to better understand the effects of determined risks in a BOT mega transportation project. As the last step of the study, the fuzzy analytical hierarchy process method was used to prioritize risk factors. Findings The prominent risk factors were found out as occupational accidents, integration between design and construction phases and excessive design variations. Research limitations/implications Different kinds of BOT transportation projects in different countries might be executed very differently considering specific social, political, economic and other factors. However, the results of the study are important in terms of the specific lessons learned from the case study that can be used as a foundation for developing possible risk mitigation measures. Originality/value Though the risk management of BOT projects has been investigated frequently in the literature, there is a knowledge gap in the quantitative evaluation of risk significance specific to design and construction risks. The prioritization of determined risks with an associated case from a mega transportation project will contribute to the BOT project practitioners about possible challenges in design and construction phases in BOT mega transportation projects.

Fire Risk in Informal Settlements: A South African Case Study

2006 ◽  
Vol 31 (1) ◽  
pp. 98-105
Author(s):  
James Morrissey ◽  
Anna Taylor
Keyword(s):  
South African ◽  
Urban Areas ◽  
Informal Settlement ◽  
Effective Means ◽  
Fire Risk ◽  
Factors Affecting ◽  
Reduction Strategies ◽  
Risk Reduction Strategies ◽  
Urban Risk

With the increased concentration of populations in urban areas and the consequent occupation of marginal land, largely by the poor, the need for effective means of understanding and managing urban risk is immense. This paper explores the existence and variability of fire risk in the informal settlement of “Imizamo Yethu”, an informal settlement situated in Cape Town, South Africa. The case study mainly analyses the factors influencing the conditions of risk. It highlights the need for a shift away from the hegemonic dialogue around so-called natural disasters and goes further to challenge the view of risk as an interaction between external, natural hazards and internally generated vulnerability. The paper explores how different factors affecting fire risk operate at different scales and the resulting importance of recognising and understanding intra-community and even intra-household variability of risk. In so doing, it becomes evident that for risk reduction strategies to be effective, focus cannot simply be placed on structural interventions, but must encompass elements of social development which are sensitive to current livelihood strategies.

scholarly journals Evaluation of Green and Grey Flood Mitigation Measures in Rural Watersheds

2020 ◽  
Vol 10 (19) ◽  
pp. 6913
Author(s):  
Ranko Pudar ◽  
Jasna Plavšić ◽  
Andrijana Todorović
Keyword(s):  
Urban Areas ◽  
Risk Mitigation ◽  
Damage Model ◽  
Flood Mitigation ◽  
Mitigation Measures ◽  
Integrative Approach ◽  
Loss Reduction ◽  
Protection Measures ◽  
System 2 ◽  
Flood Protection System

Floods cause considerable damages worldwide and mitigation of their adverse effects through effective protection measures is needed. Along with the commonly applied “grey” infrastructure, “green” measures that can offer additional benefits, such as ecosystem services, are increasingly being considered lately. While the recent research tendencies are focused on the effectiveness and the value of green measures in urban areas, this paper presents a comprehensive financial evaluation of green and grey flood mitigation scenarios for a smaller rural watershed. A micro-scale damage model that builds on the hydrodynamic modeling of hazard, detailed asset identification, and damage assessment is presented and applied for evaluation of benefits from various flood mitigation measures in the Tamnava watershed in Serbia. Four scenarios are considered: (1) existing flood protection system; (2) green scenario involving new detention basins; (3) grey infrastructure enhancement by rising of the existing levees and diverting flood discharges; and (4) green-grey scenario that combines scenarios (2) and (3). The benefits (loss reduction) are the greatest with the green scenario and marginally higher with the combined green-grey scenario. The results suggest that for small rural watersheds, a holistic, integrative approach that includes both types of infrastructure can provide the most effective flood risk mitigation.

scholarly journals Encouraging the Sustainable Adoption of Autonomous Vehicles for Public Transport in Belgium: Citizen Acceptance, Business Models, and Policy Aspects

2022 ◽  
Vol 14 (2) ◽  
pp. 921
Author(s):  
Pol Camps-Aragó ◽  
Laura Temmerman ◽  
Wim Vanobberghen ◽  
Simon Delaere
Keyword(s):  
Public Transport ◽  
Urban Areas ◽  
Autonomous Vehicles ◽  
Business Models ◽  
Environmental Safety ◽  
Economic Benefits ◽  
Factors Affecting ◽  
Policy Goals ◽  
Last Mile ◽  
Socio Demographic Factors

Several mobility-related issues persist in and around urban areas. Autonomous vehicles promise substantial environmental, safety, and economic benefits but may also cause unintended adverse effects that stem from single-passenger mobility becoming more affordable and accessible. While using them for public transport (i.e., autonomous shuttles) can help avoid such downsides, there are many challenges to their adoption, particularly ones that are related to citizen acceptance and economic aspects. Based on a novel survey of Brussels’ citizens, we provide insights from user opinions on last-mile autonomous shuttle services and analyze the effect of various attitudinal and socio-demographic factors affecting such acceptance. Our respondents exhibit an overall positive acceptance albeit with a limited willingness to pay for it. In addition, based on expert interviews, we provide a discussion on appropriate business models and policy recommendations to help ensure the timely adoption of AVs in Belgium that adapts to mobility needs and policy goals.

scholarly journals ANALYSING DELAY IMPACT FROM POTENTIAL RISK FACTORS ON PROJECT DELIVERY OF OIL AND GAS PIPELINE: A CASE STUDY IN IRAQ

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
LAYTH A KRAIDI ◽  
Raj Shah ◽  
Wilfred Matipa ◽  
Fiona Fiona Borthwick
Keyword(s):  
Risk Factors ◽  
Oil And Gas ◽  
Risk Mitigation ◽  
Mitigation Measures ◽  
Project Delivery ◽  
Analysis Framework ◽  
Potential Risk Factors ◽  
South Of Iraq ◽  
The Impact

The aim of this paper is to present the design and specifications of an integrated Delay Analysis Framework (DAF), which could be used to quantify the delay caused by the Risk Factors (RFs) in Oil and Gas Pipelines (OGPs) projects in a simple and systematic way. The main inputs of the DAF are (i) the potential list of RFs in the projects and their impact levels on the projects and the estimated maximum and minimum duration of each task. Monte Carlo Simulation integrated within @Risk simulator was the key process algorithm that used to quantify the impact of delay caused by the associated RFs. The key output of the DAF is the amount of potential delay caused by RFs in the OGP project. The functionalities of the developed DAF were evaluated using a case study of newly developed OGP project, in the south of Iraq. It is found that the case study project might have delayed by 45 days if neglected the consideration of the RFs associated with the project at the construction stage. The paper concludes that identifying the associated RFs and analysing the potential delay in advance will help in reducing the construction delay and improving the effectiveness of the project delivery by taking suitable risk mitigation measures.  

scholarly journals Mapping and modelling urban solar energy pontentials using geospacial data: A Case Study Of Ryerson University Campus

2021 ◽  
Author(s):  
David Forgione
Keyword(s):  
Solar Energy ◽  
Urban Areas ◽  
Geographical Location ◽  
Green Roofs ◽  
Energy Potential ◽  
Urban Centre ◽  
Factors Affecting ◽  
Building Models ◽  
Building Surfaces

Determining the solar energy potential on a surface depends on geographical location, prevailing meteorological conditions, size, shape and orientation of a surface. In urban areas shading is an important parameter, given the density of buildings and must be considered in an evaluation of available irradiation. This thesis develops an integrated workflow for modelling and mapping solar energy potentials in urban areas. This was accomplished through a case study of a typical large urban centre - The City of Toronto, using 3-D building models and selected software tools. The developed workflow was applied and successfully modelled the solar energy potential of buildings in the selected case study area. The results allowed for further characterization of the main factors affecting solar energy potentials on building surfaces in urban areas. This preliminary study indicates that, in comparison to HVAC systems and green roofs, shading may be a less important factor to consider when estimating solar energy potentials in some urban settings.

Sign in / Sign up

Export Citation Format

Share Document