建设工程业主与承包商招标后合同价格谈判的博弈分析

本文目的在于对业主和承包商在招投标后的合同谈判机理进行研究。对于经过招标的合同谈判,招标活动分两种情况,第一种情况为公开招标,第二种情况为邀请招标。对公开招标,本文指出了垄断性围标对于业主的风险,并且将存在寡头及多头竞争的公开招标并入邀请招标进行研究。在邀请招标情况下,假设业主根据各方报价和技术标得分,选定某一家单位作为合同谈判对象。对在各种信息对称、不对称情况下,对于双方的序贯博弈过程进行分析。     

Traders' Bidding Strategies on European Grain Export Refunds: An Analysis with Affiliated Signals

Using a multivariate distribution of traders' information with correlations, we specify the traders' bidding strategies on tenders of European soft wheat intervention stocks. We show that correlations may have opposing effects on the traders' bidding strategy, depending on their valuation of the grain. This structural approach allows us to estimate the traders' strategies using generalized method of moments procedures.     

习惯性违章行为的调查与对策研究

小漏洞存在大隐患,习惯性违章都是出在一些细节上的问题,从而导致事故的发生。习惯性违章为何屡禁不止,本文通过对操作员工的习惯性违章行为的调查,研究分析在习惯性违章行为发生时员工的心理状态等因素,从理论的角度阐述习惯性违章的特点和根源,提出预防习惯性违章的措施和对策,预防事故的发生。     

The spillover effects of infill developments on local housing prices

This paper examines the spillover effects of infill developments, which involve developing vacant or under-used parcels within existing urban areas that are largely developed, on local housing prices. Employing a difference-in-difference specification on a sample of 275 new developments and 55,887 sale transactions of houses in Singapore, we find that infill developments have a positive and persistent impact on local housing prices. The contagion effect is larger for infill developments that are built on teardown sites. The spillover effect can also be traced to the overpricing of new homes by developers. Overall, the evidence indicates that developers act as price leaders and contribute significantly to price discovery in the local housing market.     

Controlling the Urban Fabric: The Complex Game of Distance and Proximity in European Upper‐Middle‐Class Residential Strategies

This article presents an open discussion of the processes of urban secession and gentrification in contemporary European cities, arguing that intergroup social dynamics in urban spaces are generally more complex than either extreme mutual avoidance or the colonization of neighbourhoods by the wealthiest groups. We analyse the residential strategies of urban upper‐middle class managers in various European metropolitan areas through in‐depth semi‐structured interviews to argue that these groups develop complex strategies of proximity and distance in relation to other social groups. The development of these ‘partial exit’ strategies takes place through specific combinations of practices that allow groups to select the dimensions they are willing to share with other social groups, and those in which they prefer a more segregated social environment for themselves and their families. The responses of our interviewees were consistently more nuanced and complex than suggested by a simplistic theory about their drive to withdraw from society, forcing us to develop more sophisticated conceptual frameworks to account for the growing prevalence of multi‐layered identities and spheres of reference and solidarity, specific combinations of elective segregation and local involvement, and more active patterns of mobility combined with local embeddedness.     

Real-life cost of vitamin K antagonist treatment in patients with non-valvular atrial fibrillation in France in 2013

Aims: Data highlighting the cost drivers for non-valvular atrial fibrillation (NVAF) patients in terms of vitamin K antagonist (VKA) treatment and monitoring are lacking in France. This study aimed to evaluate the real-life daily cost of VKA treatment in 2013, in French patients suffering from NVAF.

Methods: This longitudinal observational study was performed using the EGB (Echantillon Généraliste des Bénéficiaires) database, a random sample of the French national insurance (NHI) database, which covers 80% of the population. All adult patients whose first NVAF anticoagulant treatment in 2013 was a VKA were analyzed. Costs were calculated for the duration of follow-up and then divided by the number of days of therapy. The analysis was performed both from the French NHI perspective (amount reimbursed by the NHI) and from a collective perspective.

Results: In this study, 3,254 NVAF patients treated with VKA in 2013 were included, and this sample comprised 52.6% males. The mean daily cost of VKA treatment was €1.13 (±1.18) according to the collective perspective (89.4% of this cost was associated to INR measurement) and €1.05 (±1.16) according to the NHI perspective.

Limitations: As diagnoses associated with procedures are not available in the EGB database, proxies were used, and an algorithm was created to define the AF population.

Conclusions: This analysis is the first to consider an exhaustive spectrum of the costs of VKA treatment in France using EGB data. VKA medication requires exhaustive follow-up, and, thus, associated costs are important. The results of the present study confirmed this close follow-up for VKA patients, making the cost of treatment by VKA nearly 10-times more expensive than the cost of medication itself.     

The role of R&D in high-technology trade: An empirical analysis

Conclusion This paper attempts to establish the relationship between the level of R&D activities of a country and its trade performance in high-technology products. Empirical evidence based on the limited data used in the paper shows that this relationship appears to be quite significant. An analysis of the implications of this relationship reveals that the low level of R&D in Canada is due to, among other factors, the prevalence of foreign ownership of Canadian manufacturing industries, and the resource-based characteristic of the Canadian economy. Given the nature of foreign-owned firms, the paper suggests that countries should not rely on them as a crucial instrument in the creation of an indigenous capacity to produce high-technology products which are competitive at the world level. Instead, domestic policies aimed at the development and nurturing of the countries' own scientific and technological skills are required. The views expressed in this paper are those of the author. They should not be construed as the official views of the Ministry of State for Science and Technology of the Government of Canada. Research assistance provided by Tom Wudwud and Penny Robinson is well appreciated. The author, however, is responsible for any omissions or errors that remain.     

关于国有风险投资发展困境与对策的思考

国有风险投资面对着退出渠道不畅通、平均投资收益低、管理体制僵化、增值服务能力弱、募资能力不足、政府实质性扶持政策欠缺等困境,从现阶段生存与再发展角度考虑,国有风险投资除期待中国投融资环境进一步改善外,必须面对国情主动进行体制创新与管理创新。