Mechanization in building construction projects: assessment and views from the practitioners

Abstract

While mechanization has been widely adopted in the current construction industry, little research has been done to assess the level of mechanization in building construction projects. The aims of this study are to propose a framework that can assess the level of mechanization in building construction projects, to develop a computer-based tool that can help assess mechanization levels, and to collect the views of industry practitioners regarding mechanization. To achieve these goals, a comprehensive literature review was conducted first, and based on which a six-layer assessment framework, namely Mechanization Index for Building Construction Projects, was proposed. After that, Mechanization Index Assessment Tool, a computer-based tool that can assess the level of mechanization in building construction projects, was developed. The developed tool was adopted in 14 construction projects in Singapore. Assessment results showed that the mechanization level of the projects was 48.54 percent out of 100, which is moderate. Results also reported that ‘site preparation’ and ‘underground piping’ were two work types that are more mechanized, while work types of ‘formwork’, ‘tiling’, and ‘painting’ were relatively less mechanized. Additionally, industry practitioners perceived that the mechanization levels in the current building construction projects and industry were moderate and more efforts should be put in this regard, especially from the perspective of the industry. This study is the first piece of research work that assesses the level of mechanization in building construction projects and thus, it contributes to the body of knowledge. Furthermore, the assessment tool developed can easily be used either by industry practitioners or by construction authorities to do mechanization assessment. Thus, this study contributes to the practice as well.     

Social change and nationalism in China's popular songs

ABSTRACT

The unveiling of memorials to those who fell in the First World War were highly solemn, dramatic and emotional events. Yet, while much attention has been given by historians to memorials and the purposes behind memorialisation, there has been less discussion of just how the feelings of the public were stimulated and provoked. Most accounts concentrate on the aesthetics and symbolism of the monuments themselves, and the speeches given by the officiating parties and individuals at unveilings. In doing so, however, they miss what was perhaps the most important emotional aspect of these ceremonies: music. This article argues that non-verbal sounds best expressed the raw emotions of the occasions and, in doing so, gave them their power and significance in establishing the mood of the moment and the public’s attachment to the memorials. Examining the major city memorials of Scotland as well as the National Memorial at Edinburgh Castle, it focuses on the significance of the bagpipes and Scotland’s most famous lament, ‘The Flowers of the Forest’, in providing the emotional high points of the ceremonies.     

Impacts of Home Modifications on Aging-in-Place

The purpose of this study is to analyze the relationship between home modifications and aging-in-place. Using the ENABLE-AGE United Kingdom sample (N = 376), the authors hypothesize that seniors who have modified their housing are likely to have stayed longer in their current housing. There is a positive relationship between home modifications and aging-in-place. The results underscore the importance of supportive environment to prolong living in housing settings.     

Prevalence and risk and protective factors associated with HIV-related behavior among transgender people in Hong Kong

Abstract

This paper presents findings from the first large-scale quantitative study into HIV-related behavior among transgender people in Hong Kong. A survey of 195 transgender people found that only one-third of those who had engaged in sexual behavior in the past 3?months reported consistent condom use. Stable relationships, beliefs in low HIV transmission risk, and condom inaccessibility were cited as reasons for inconsistent condom use. The HIV testing figures were also strikingly low. This study demonstrates an urgent need for addressing HIV issues among transgender people in Hong Kong as there are currently no such specific services.     

Using the dependent wild bootstrap for the nonparametric goodness-of-fit test for density functions

In this paper, we consider the well-known nonparametric consistent model-specification test for the stationary density function (see [Aït-Sahalia Y. Testing continuous-time models of the spot interest rate. Rev Financ Stud. 1996;9:385–426; Li Q. Nonparametric testing of closeness between two unknown distribution functions. Econ Rev. 1996;15:261–274; Fan Y, Ullah A. On goodness-of-fit tests for weakly dependent processes using kernel method. J Nonparametric Stat. 2000;11:337–360]) and reinvestigate it carefully using asymptotics and simulation. Our work reveals that the test is subject to power and size distortions, which are mainly caused by dependence or convergence rate changes under the null and alternative hypothesis. A dependent wild bootstrap is newly suggested as a feasible remedy to such distortions. Our result provides a complete explanation as well as a solution to the problem that experienced by Aït-Sahalia [Testing continuous-time models of the spot interest rate. Rev Financ Stud. 1996;9:385–426], that is, that the test rejects true models too often when independent and identically distributed asymptotic critical values are used.     

Nonparametric Bayesian analysis for multi-site hidden Markov model

The hidden Markov model (HMM) provides an attractive framework for modeling long-term persistence in a variety of applications including pattern recognition. Unlike typical mixture models, hidden Markov states can represent the heterogeneity in data and it can be extended to a multivariate case using a hierarchical Bayesian approach. This article provides a nonparametric Bayesian modeling approach to the multi-site HMM by considering stick-breaking priors for each row of an infinite state transition matrix. This extension has many advantages over a parametric HMM. For example, it can provide more flexible information for identifying the structure of the HMM than parametric HMM analysis, such as the number of states in HMM. We exploit a simulation example and a real dataset to evaluate the proposed approach.     

The effect of charitable giving by celebrities on the personal public relations

This study examined how charitable giving by entertainment celebrities influences celebrity personal public relations. Survey participants showed positive attitudes toward charitable giving. Attitudes toward charitable giving positively influenced celebrity credibility perception. Credibility also influenced attitudes toward the celebrities, which in turn positively influenced the purchase intention of their performance. Also, attitudes toward charitable donations were positively associated with attitudes toward the celebrities. Scholars and practitioners need to note charitable giving as an efficient and strategic personal public relations factor and method.     

A study of the Health of Children Born to Foreign- and Native-Born Mothers in Taiwan

This paper examined the health of children born to foreign-born and native-born mothers. Using a logistic methodology to analyze data from the 2008 Survey of Foreign and Mainland Chinese Spouses’ Living Demand and the 2005 National Health Survey of Children 12 Years old and under in Taiwan, the results showed girls were more likely to have better health than boys regardless of whether they were born to migrant or native-born mothers. In addition, a more significant effect was found for native-born fathers than foreign-born mothers on children’s health among transnational marriage families. Finally, household income might have a more significant impact on children’s health in native-born mothers’ families than those of foreign-born mothers.     

Policy transfer and role of policy entrepreneur in international aid: exploring international development cases of Korea and Vietnam

This paper looks at how an innovative policy comes to be transferred to another country and be successfully implemented. We explore three key dimensions (time, location, and people) in policy transfer studies using two cases of international aid (Saemaul Undong and e-Government projects). Utilizing a case study method, this paper upholds the predominant role of the policy entrepreneur over the environment (different time frame and different social, political, economic systems). The stakeholder analysis shows that policy entrepreneur’s role is critical in making policy transfer successful. In part, this argument is in line with previous “Advocacy Networks” studies, such as that of Keck and Sikkink (1998), highlighted the importance of policy entrepreneurs being able to navigate in the networks of international development. This paper aims to contribute to the literature by applying Dolowitz and Marsh’s policy transfer framework in the international aid context and calls for further empirical research employing the network analysis method.