Model for Bidding and Tendering with Bill of Quantities Based on Bid-Winning Estimate at Reasonable Low Price

IntroductionThe quotation made according to bill of quanti-ties is a construction cost evaluation mode in the bid-ding and tendering of construction project:the invitat-er provides the bill of quantities according to the pro-visions of the evaluation of t…     

Airline competition and market frequency: A comparison of the s-curve and schedule delay models

We compare two common ways of incorporating service frequency into models of airline competition. One is based on the so called s-curve, in which, all else equal, market shares are determined by frequency shares. The other is based on schedule delay—the time difference between when travelers wish to travel and when flights are available. We develop competition models that differ only with regard to which of the above approaches is used to capture the effect of frequency. The demand side of both models is an approximation of a nested logit model which yields endogenous travel demand by including not traveling in the choice set. We find symmetric competitive equilibrium for both models analytically, and compare their predictions concerning market frequency with empirical evidence. In contrast to the s-curve model, the schedule delay model depicts a more plausible relationship between market share and frequency share and accurately predicts observed patterns of supply side behavior. Moreover, the predictions from both models are largely the same if we employ numerical versions of the model that capture real-world aspects of competition. We also find that, for either model, the relationship between airline frequency and market traffic is the same whether frequency is determined by competitive equilibrium, social optimality, or social optimality with a break-even constraint.     

Competitive tendering versus performance-based negotiation in Swiss public transport

The purpose of this study is to assess differences in the levels of cost efficiency of bus lines operated under competitively tendered contracts and performance-based negotiated contracts. Following the revision of the Swiss railways act in 1996, regional public authorities were given the choice between two different contractual regimes to procure public passenger transport services. We directly compare the impact of competitive tendering and performance-based negotiation by applying a stochastic frontier analysis to the complete dataset of bus lines (n = 630) operated by the main Swiss company (Swiss Post) at the same time (in 2009) throughout the country. The overall results show that the differences in the levels of cost efficiency between the two contractual regimes are not significant. Our findings are in line with recent evidence of cost convergence between competitive tendering and performance-based negotiation, and suggest that the practice of using both contractual regimes is challenging for the operators in terms of competitive pressure. The threat of competitive tendering may have a disciplining effect on negotiation since it prevents bus companies from bargaining inadequate rents and inducing asymmetric information advantages.     

Adelaide bus service reform: Impacts, achievements and lessons

Adelaide's bus system has been transformed from a government monopoly operation to a competitively tendered system with services provided by private operators under contract. The ‘Adelaide model’ has unique features, and has been considered in several international reviews of urban bus service procurement. The paper reviews the experience in Adelaide up to 2006/07. It updates previous evidence that focused on technical efficiency impacts. It particularly examines the development of the system to address allocative efficiency, in terms of the quantity, quality and market orientation of the services provided, and the consequent effects on patronage.     

A new regulation for the European public transport

Authority intervention in the public transport sector has a long history and has led to a growing corps of legal texts in European countries. These texts are often divergent, if not incompatible. This was no problem until the rather recent internationalization of the sector. With this internationalization, the European Commission decided to address this issue. This chapter describes what has led to the appearance of this new Regulation and the main steps on the 10-year long road that led to the adoption of the new Regulation. The chapter also formulates some comments on the results reached.     

加强项目程序管理 提升公路建设质量

近年来，公路基础设施建设得到了快速、迅猛的发展，公路建设质量已经关系到经济发展、社会和谐、群众利益，以及行业兴衰。提升公路建设质量，还应在尊重科学，以科学发展为指导的前提下，从完善质量保证体系、加强合同管理、招投标管理、工期管理、安全管理、环节控制等多个方面来进行不断提高。     

投标报价综合评分法分析

通过实例介绍在铁路招投标项目的综合评分法中，投标人进行报价测算分析的两种基本方法（逐渐接近法和系数测算法）的应用。     

铁路工程保险招标分析

0引言随着铁路跨越式发展的深入推进,铁路建设投资呈逐年上升趋势。按照铁路中长期规划,到2020年,我国铁路营运里程将达到10万km,时速250km以上的客运专线要大规模修建,共需投入建设资金2万亿元,每年平均投资需求达1300亿元,除已有的铁路建设基金、银行贷款的款源外,每年资金缺     

Differentiation-Based Analysis of Environmental Management and Corporate Performance

Introduction Environmental deterioration make the societyconcern about the corporate environmental perform-ance, which urges more and more managers to intro-duce environmental management into their corporatestrategies. While most of the managers find them…     

雁滩南河道桥梁投标方案设计

该文介绍了雁滩南河道桥梁投标方案设计,对方案设计及设计的特点进行了简要论述,有关内容可供桥梁设计人员参考。