This paper presents the development of a radiofrequency identification (RFID)–based real-time locating system (RTLS) for safety management. The particular focus this is creation RTLS, which provides accurate and robust localization performance in construction sites where it otherwise very difficult to maintain signal availability because many (moving) obstacles. Adopted were Time arrival method as method, Chirp spread spectrum wireless networking technology, Assistant Tag way enough...

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

Although the modular construction method is safer than traditional onsite methods, accidents still occur; therefore, projects have characteristic safety risks. This study investigated accident cases related to and identified risk factors. The evaluated that occurred in United States from 2000 2018 analyzed factors, such as types causes of these cases. In process analysis, causal map was developed it used identify accidents. results analyses showed major activities. Second, this conducted a...

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

Research in construction innovation highlights industry as having many barriers and resistance to innovations suggests that it needs champions. A hierarchical structural model is presented, assess the impact of role project manager (PM) on levels performance. The adopts equation modelling technique uses survey data collected from PMs team members working for general contractors Singapore. fits well observed data, accounting 24%, 37% 49% variance championing behaviour, level performance,...

Concurrent design and construction has been lauded for streamlining projects in terms of time. However, such an approach may actually make more uncertain complex than the traditional sequential process. The main sources risk that have identified with concurrent are iterative cycles result from unanticipated errors changes their subsequent impacts on project performance. As effort to address these detrimental impacts, a framework quality change management identifies those negative is...

A significant number of large-scale civil infrastructure projects experience cost overruns and schedule delays. To minimize these disastrous consequences, management actions need to be carefully examined at both the strategic operational levels, as their effectiveness is mainly dependent on how well perspectives details a project are balanced. However, current construction approaches have treated issues separately, consequently introduced potential conflict between analyses. address this...

Each participant in a building construction project requires dedicated work space which to execute their activities. In this environment, inappropriate work-space planning site causes problems, results loss of productivity, safety hazards, and issues poor quality. Therefore, the should be considered one most important resources constraints manage at site. However, current techniques have proven insufficient for because they do not account spatial feature each activity. To establish...

In recent years, noise-related disputes caused by construction equipment have increased, resulting in delays and cost overruns the process. To deal with this challenging issue, passive noise control methods such as soundproof barriers enclosures been widely used. However, these a limited effect when used to attenuate low-frequency noise. This research aims suggest management model demonstrate applicability of active (ANC) new approach supplement limitations control. Simulations were...

Factors affecting construction project cost include project‐specific factors and those reflecting the characteristics of team. Multiple regression is often used to estimate a project's cost, but independent variables with high degree correlation are likely be left out such model. As result, only limited number included in predictions from models will not accurate. To overcome this technical inefficiency, aims study are: identify that contribute construct predictive model using principal...

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 variable-length encoded was independently proposed by authors and Demir Sayood (see Proc. Data Comp. Conf., Snowbird, UT, p.139-48, 1998). We describe compare performance a computationally complex exact maximum posteriori (MAP) decoder, its efficient approximation, alternative...

Accelerating a project can be rewarding. The consequences, however, troublesome if productivity and quality are sacrificed for the sake of remaining ahead schedule, such that actual schedule benefits often barely worth effort. tradeoffs paths pressure—and its causes effects—are overlooked when decisions being made. This paper analyzes effects pressure has on construction performance, focuses in scheduling. A research framework been developed using causal diagram to illustrate...

The case-based reasoning (CBR) method can be an effective means of utilizing knowledge gained from past experiences to estimate cost in construction. It has also been observed that CBR enhance ...

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

Many work-related risk factors can cause accidents on construction sites. Considering the varied characteristics of these sites, risks within same type work differ. Furthermore, established safety management performed in other industries does not necessarily apply to construction. To suggest an assessment system considering influence this study examines through literature reviews and surveys, builds a weighting for their classification. The each are estimated based frequency severity. With...

The use of mesenchymal stem cells (MSCs) has emerged as a potential new treatment for myocardial infarction.However, the poor viability MSCs after transplantation critically limits efficacy this strategy.The expression microRNA-210 (miR-210) is induced by hypoxia and important cell survival under hypoxic conditions.Hypoxia increases levels inducible factor-1 (HIF-1) protein miR-210 in human (hMSCs).miR-210 positively regulates HIF-1α activity.Furthermore, also through regulation .To...