Browsing by Author "Yang, Jyh-Bin"

Now showing 1 - 7 of 7

An Empirical Study of Schedule Delay Causes Based on Taiwan's Litigation Cases
(2013-06-01)
Yang, Jyh-Bin
;
Chu, Mei-Yi
;
Huang, Kuei-Mei
;
土木工程學系
;
Department of Civil Engineering
Many uncertainties can cause construction projects to be delayed, resulting in conflicts between the two parties to a construction contract. Using case study and content analysis methodologies, this study analyzed 79 litigation cases in Taiwan to identify the main causes of schedule delays in construction projects, which are change orders, changed scope of the work, delayed site handover, and weather. In this study, these causes are organized into a causation model to provide a reference for preventing schedule delay. The employed approach can be implemented for assessments of other regions, as schedule delays are common features in most construction projects.
An integrated proactive knowledge management model for enhancing engineering services
(2012-07-01)
Wu, Ji-Wei
;
Tseng, Judy C. R.
;
Yu, Wen-Der
;
Yang, Jyh-Bin
;
Lee, Shun-Min
More and more construction organizations have adopted Knowledge Management (KM) to enhance their engineering services. However, most of the traditional KM methods suffer from their "reactive mode" of problem solving. To cope with this problem, a newly developed model, the Integrated Proactive Knowledge Management Model (IPKMM), is proposed in this paper. A leading engineering consulting firm in Taiwan was selected as a case study to implement the proposed model. The system implementation of IPKMM, the Integrated Proactive Knowledge Management System (IPKMS), is verified with real world cases. A novel Business Intelligence Index (BII) is also proposed in this paper to evaluate the relative competitiveness of different KM models. It is confirmed from the case study that IPKMM can significantly improve the efficiency of problem-solving and the competitiveness of an engineering consulting firm in the service market. This study demonstrates that IPKMM has great potential in enhancing emergent problem-solving for engineering consultants. (C) 2012 Elsevier B.V. All rights reserved.
Benefit Analysis of Knowledge Management System for Engineering Consulting Firms
(2014-07-01)
Yang, Jyh-Bin
;
Yu, Wen-Der
;
Tseng, Judy C. R.
;
Chang, Chia-Shin
;
Chang, Pei-Lun
Engineering consulting (EC) firms in the construction industry are knowledge-intensive and experience-based organizations. As the knowledge accumulated from previous experiences is the essential asset for wining and managing future projects, many EC firms have developed diversified knowledge management systems (KMSs) to accumulate and retain this essential knowledge. However, evaluation methods and results regarding the benefit analysis of KMSs are rarely found in literature. To evaluate the performances of KMSs, most previous studies have adopted qualitative approaches. This paper, on the other hand, presents a ratio-based approach for evaluating the benefits of KMSs. The proposed approach is tested using one of the KMSs from a study EC firm: the proposal preparation assistant (PPA) system. Based on a test of two real cases, this study found that a 48.7% time reduction in data collection and 25.3% staff-hour savings can be achieved when using the PPA system to prepare service proposal drafts. The results revealed in this study not only prove the usability of the proposed ratio-based benefit analysis approach, but also provide convincing and inspiring information for knowledge management practitioners as they plan their future works. (C) 2014 American Society of Civil Engineers.
Evaluating bid item prices to support contractor selection - A case study
(2007-06-01)
Lin, Chun-Chang
;
Wang, Wei-Chih
;
Yang, Jyh-Bin
;
土木工程學系
;
Department of Civil Engineering
Bid price is a highly-weighted appraisal criterion in a multi-criteria evaluation method to select contractors for construction projects. By evaluating both the magnitude and reasonableness of the bid price, this study presents an electronically-facilitated model for evaluating bid prices. The model defines a reasonable total price for a project and a reasonable cost for each cost category (or bid item) by considering the project prices estimated by the project owner and submitted by all qualified bidders. Scoring systems are then employed to score the prices submitted by bidders, and weighting methods are used to integrate the derived scores. The bidder with the highest integrated score receives the most favorable price appraisal. The merits of the proposed model are demonstrated by its successful application to a recent public construction project in Taiwan.
Integrating wireless and speech technologies for synchronous on-site data collection
(2007-05-01)
Tsai, Ming-Kuan
;
Yang, Jyh-Bin
;
Lin, Chang-Yu
;
土木工程學系
;
Department of Civil Engineering
Efficient on-site data collection is important for ensuring timely information flow and successful project management. Although applying information technologies and electronic devices to reduce time-consuming manual paperwork has been valued, one previous study has indicated that asynchronous operations with unnecessary subprocesses still affect information production and transmission. Implementing synchronization-based processes is a solution to enhancing on-site data collection performance. However, these synchronized processes based on worker cooperation still have room to improve their efficiency. Continuous improvement is essential to satisfying this objective. This study thus develops a synchronous system integrated with wireless and speech technologies to enhance the cooperation between construction workers and application devices. System tests and efficiency evaluation in a material management case study demonstrate that this system increased productivity, reduced operation time and simplified subprocesses for activity completion. The synchronous system not only represents a novel application for on-site material management, but also provides a framework for applying wireless and speech technologies for similar on-site information management. (C) 2006 Elsevier B.V. All rights reserved.
Synchronization-based model for improving on-site data collection performance
(2007-05-01)
Tsai, Ming-Kuan
;
Yang, Jyh-Bin
;
Lin, Chang-Yu
;
土木工程學系
;
Department of Civil Engineering
Comprehending activity status is essential to successful project management. When construction workers report activity information, project managers understand activity progresses. This procedure forms information exchange and flow. However, the lack of up-to-date information still causes project problems (such as increasing unnecessary costs, making erroneous decisions and improper activity scheduling), and highlights the importance of on-site data collection. For improving this condition, this study integrates two managerial philosophies ("theory of constraints (TOC)" and lean construction) to propose a synchronization-based model. When this model was applied for a material management case study, asynchronous operations accompanied with unnecessary subprocesses were recognized as an influence on on-site information production and transmission. This study then applied synchronous operations based on worker cooperation to resolve these problems, and evaluated the efficiency obtained by the identified measurements. The proposed model offers not only a prototype of synchronous on-site data collection, but also a mechanism for activity performance improvement. (C) 2006 Elsevier B.V. All rights reserved.
USING DATA ENVELOPMENT ANALYSIS TO SUPPORT BEST-VALUE CONTRACTOR SELECTION
(2016-02-17)
Yang, Jyh-Bin
;
Wang, Han-Hsiang
;
Wang, Wei-Chih
;
Ma, Shin-Min
;
土木工程學系
Selecting an appropriate contractor or supplier is essential to the successful implementation of a public procurement project. The Taiwan government frequently applies the best-value (BV) tendering method, a multi-criteria evaluation method, to procure projects. However, the selection process of the winner for a BV-based procurement project is generally subjective and thus is easily accused of corruptions. To develop a systematic method to support contractor selection, this study proposes using the Data Envelopment Analysis (DEA) to facilitate the criteria evaluations for each bidder during the short-listing stage. The evaluation results of using the DEA are a list of potential BV winners who are then suggested to enter into the final selection stage. Based on three case studies related to service procurement projects, this research finds that the DEA is suitable of assessing the relative efficiencies among bidders when the BV approach is applied. Lessons learned here should be helpful in applying the DEA to aid bid evaluations in other supplier selection problems.