Factors affecting the bidding behaviour of contractors in Egypt

The financing source was determined to be the most important to the category of contractors included in the study. Other qualitative factors such as nationality of expected competitors were determined as influencing the decision. The factors and their influence on the bid/no bid decision differed between the Egyptian and foreign large size contractors operating in the country.     

浅析投标报价决策的技巧

针对现在建筑市场投标流行的评标办法，介绍了最低报价中标法、综合评标法、评审法等评标法的决策技巧，并结合实践进行了分析，以期提高中标率。     

A framework for contractors to reach strategically correct bid/no bid and mark-up size decisions

In an effort to uncover the main factors that characterize the two distinct but sequential stages of bidding decisions, namely bid/no bid and mark-up size decisions, this study identifies the key determining factors and their importance weights by presenting survey findings of 80 contracting organizations from Northern Cyprus and Turkish construction markets regarding this issue. The framework presented in this study will serve as a basis for a knowledge-based system model which will guide the contracting organizations in reaching ‘strategically correct’ bid/no bid and mark-up size decisions. The proposed framework used a reasoning model, which went deeply into the heart of the decision-making process and helped to clarify the complex picture regarding the two sequential decisions. The results revealed that there is a distinct and significant difference in the importance assigned to the same key factors for the two separate decision processes. Furthermore, the study confirmed the fact that the factors related to ‘strategic considerations’ have a significant role in both of these decision processes. One of the most striking findings of this research was the distinct difference in approach of varying sizes of contractors to the overall issue. Hence, these results suggest that any model regarding bidding and mark-up size decisions should definitely differentiate among different sizes of contractors to reflect the approaches of the related contractors in a better manner. Furthermore, it was interesting to find out that the correlation between different sizes of contractors’ approaches was higher in the mark-up decision process compared to the bidding decision process. In spite of the fact that this study was based on input provided by certain types of contractors in Northern Cyprus and Turkish construction markets only, we believe that the overall approach, reasoning and findings of the proposed framework are of good value to contracting organizations in different construction markets throughout the world as well.     

信息共享在建筑供应链决策中的价值测度

科学测度信息共享在建筑供应链决策中的价值,对提高承包商的运作绩效具有重要意义。借鉴传统供应链信息共享价值分析的研究思路,结合建筑供应链管理实践,建立建筑供应链信息共享价值测度模型。以总承包商和材料设备供应商组成的供应链为例,建立供应商是否同总承包商共享供货信息对总承包商的服务水平和库存成本的影响的信息共享价值测度模型;以钢筋的采购管理为例,对该模型进行模拟分析。结果表明:共享信息可以提高总承包商的服务水平,降低总库存成本;供应商服务水平越低、供货提前期越大,信息共享对总承包服务水平和总库存成本的影响越大。     

Cause and effect 3-D model for measuring performance in construction acceleration: A decision support system

Despite the constant improvements in the management of building projects, the authors express concerns about the difficulties in controlling progress with construction, despite the availability of quantifiable and non-quantifiable data. They believe that a decision support system would assist managers when confronted by the consequences of arising delays, and by the decision whether and how to accelerate the remaining construction activities. The system has the advantages of providing support when facing an ill-structured decision about accelerating progress when delays occur; it also helps as a predictive management tool for minimizing or avoiding delays and their consequential claims.     

基于网络协同的建设项目价值管理系统

价值管理(Value Management,VM)是降低建设项目成本和改善项目执行效率和质量的一个重要途径,然而,VM在我国建设领域中还存在应用不足、认识不够、相关法律法规不完善以及成效不显著等问题。由于工作计划不同、技术手段差异以及不支持远程协同等因素的影响,针对香港建设领域开发的交互式价值管理系统(IVMS)难以直接应用于内地。为此,本文在IVMS基础上,提出了适用于我国建设领域VM实践的价值管理系统IVMS-CN。IVMS-CN是一个基于网络协同的群体决策支持系统,它由网络通讯平台、协同平台和管理平台等三部分组成,能够为用户提供一个远程协作环境和群体决策支持平台,实现远程参与VM研究,并促进参与者之间的信息交流和共享,减少过程损失,增加信息增益,从而实现VM研究效率与质量的提高。     

A methodology for selecting portfolios of projects with interactions and under uncertainty

Effective project evaluation and selection strategies can directly impact organizational productivity and profitability. Numerous analytical techniques ranging from simple weighted scoring to complex mathematical programming approaches have been proposed to solve these problems. However, traditional project selection methods too often fail to consider both the uncertainties in projects and the interaction among projects. Some prior studies have considered the interaction among projects in deterministic environments. Others have dealt with stochastic environments but have not considered project interdependencies. This study aspires to fill this gap in the project portfolio selection literature. Information system/information technology (IS/IT) projects are used in this study because they are frequently subject to uncertainties due to estimation difficulties and bounded by interactions due to technological interdependencies. We use Data Envelopment Analysis (DEA) to select the best portfolio of IS/IT projects while taking both project uncertainties (modeled as fuzzy variables) and project interactions into consideration simultaneously. We also present a numerical example to demonstrate the applicability of the proposed framework and exhibit the efficacy of the procedures.     

Financial evaluation program for construction projects at the pre-investment phase in developing countries: A case study

The construction industry in the Middle East represents a significant part of the world's economy. Millions of dollars are spent each year on different construction projects. These projects normally pass through several phases starting from pre-investment phase, conception design phase and finally the construction and commissioning phases. Financial management is a creative organized approach with an objective to minimize financing risks. It focuses on financial evaluation as an important issue; in that it has long been an area of attention of construction practitioners and researchers.