Moonseo Park

Abstract In construction, rework (redoing previously completed work) has a considerable impact on pro‐ject performance. As a result, construction managers often avoid rework on problematic tasks by modifying the design and specification of downstream tasks (“change”). Such a managerial action, however, can disturb the construction sequence by triggering non‐value‐adding change iterations among construction processes, which often contributes to unanticipated schedule delays and cost overruns. In o

The mobility impaired, the deaf or hard of hearing, the blind or visually impaired, the cognitively impaired, and the elderly population are among several examples of groups categorized as particularly vulnerable to fire-related hazards. Given the severity of the threat that building fires pose for these vulnerable groups in terms of the different types of debilitation they experience, it is crucial to distinguish the respective attributes of each group and map out how such differences lead to d

Research in construction innovation highlights construction industry as having many barriers and resistance to innovations and suggests that it needs champions. A hierarchical structural model is presented, to assess the impact of the role of the project manager (PM) on the levels of innovation and project performance. The model adopts the structural equation modelling technique and uses the survey data collected from PMs and project team members working for general contractors in Singapore. The

Joint source-channel decoding based on residual source redundancy is an effective paradigm for error-resilient data compression. While previous work only considered fixed-rate systems, the extension of these techniques for variable-length encoded data was independently proposed by the authors and by Demir and Sayood (see Proc. Data Comp. Conf., Snowbird, UT, p.139-48, 1998). We describe and compare the performance of a computationally complex exact maximum a posteriori (MAP) decoder, its efficie

Although the modular construction method is safer than traditional onsite construction methods, accidents still occur; therefore, modular projects have characteristic safety risks. This study investigated accident cases related to modular construction and identified the safety risk factors. The study evaluated accident cases related to modular construction that occurred in the United States from 2000 to 2018 and analyzed safety risk factors, such as the types and causes of accidents in these cas

Previous research on construction innovation has commonly recognized the importance of the organizational climate and key individuals, often called “champions,” for the success of innovation. However, it rarely focuses on the role of participants at the project level and addresses the dynamics of construction innovation. This paper therefore presents a dynamic innovation model that has been developed using the concept of system dynamics. The model incorporates the influence of several individual

Case-based reasoning (CBR) utilizes old solutions to solve a present problem. However, as no past situation is ever exactly the same as a new one, old solutions should be fitted for new circumstances, which is called case adaptation. Thus, the success of CBR depends on the ability of case adaptation. Generally, the case adaptation method can be categorized by two methods: decreasing the need for adaptation and increasing the capability. Nevertheless, previous research has focused on applying the

Buffering is a common practice in project planning. Project managers or schedulers have used a time contingency to guarantee the completion time of either an activity or a project. This traditional buffering, however, often fails to protect the project schedule performance, resulting in an unnecessary resource idle time. To deal with this problem, reliability buffering, a simulation-based buffering strategy, is presented. Reliability buffering aims to generate a robust construction plan that pro

Increasingly adopted by both public and private organizations, design-build (DB) has become a favored construction project delivery system, outperforming other systems in terms of cost, schedule, and quality. However, DB has been especially criticized by the public sector for practicing subjective evaluation, for requiring excessive resources, and for providing only limited accessibility to small and medium-sized contractors. In Korea, similar critiques have been raised, as these qualities have