发包方与供应商间关系对供应商创新能力的影响

采用多元层级回归方法,对影响供应商创新能力的驱动因素以及供应商在供应链网络中的等级位置对各驱动因素与供应商创新能力间关系的调节作用进行了理论探讨和实证分析。结果显示:在跨国外包情景下,发包方支持、共享活动和联结强度对供应商的创新能力具有显著的积极影响;供应商在供应链网络中的等级位置对联结强度与供应商创新能力间关系具有显著的正向调节作用,对共享活动与供应商创新能力间关系的正向调节作用不稳定。     

我国住宅建筑工程设计施工中存在的问题和改进措施

建筑工程施工的组织设计是建筑工程的必要保障。近些年以来,随着我国经济的迅速发展,原有的建筑工程施工组织计划已经完全不能适应目前的施工建设了,根据建筑工程组织设计所存在的这些问题及改进措施提出改进措施,使建筑工程组织设计发挥出真正的重要作用,以达到经济效益与社会效益双丰收的目的。     

The Home Bias in Equities and Distribution Costs

We show that incorporating distribution costs into a general equilibrium model of international portfolio choice helps to explain the home bias in international equity investment. Our model is able to replicate observed investment positions for a wide range of parameter values, even if agents have an incentive to hedge labor income risk by purchasing foreign equity. This is because the existence of a retail sector affects both the correlation of domestic returns with the domestic price level and the correlation between financial and non‐financial income.     

Does risk sharing increase with risk aversion and risk when commitment is limited?

I consider a risk-sharing game with limited commitment, and study how the discount factor above which perfect risk sharing is self-enforcing in the long run depends on agents׳ risk aversion and the riskiness of their endowment. When agents face no aggregate risk, a mean-preserving spread may destroy the sustainability of perfect risk sharing if each agent׳s endowment may take more than three values. With aggregate risk the same can happen with only two possible endowment realizations. With respect to risk aversion the intuitive comparative statics result holds without aggregate risk, but it holds only under strong assumptions in the presence of aggregate risk. In simple settings with two endowment values I also show that the threshold discount factor co-moves with popular measures of risk sharing.     

建设绩效考评体系 提高税式支出效益

面对纷繁复杂的税式支出,如何避免税式支出的滥用,堵塞税收流失的漏洞,进行科学有效地管理和监督,以充分发挥税式支出的引导和激励作用,切实提高税式支出效益,已成为政府和社会各界共同关注的问题。在对税式支出绩效考评体系的基本理念、实施流程和建设效益进行综合分析的基础上,论证了建设科学、合理、有效的税式支出绩效考评体系是提高税式支出效益的必要举措这一科学论断。     

Examining the influencing factors of intention to share accommodations in online hospitality exchange networks

ABSTRACT

CouchSurfing is a free social-network-based online hospitality exchange network, aptly representing a new sharing economy phenomenon. Based on social capital theory and previous literature, this study attempts to answer why hosts help strangers without any expected economic benefit within online hospitality exchange networks. An empirical study based on a Web survey conducted with CouchSurfing hosts reveals that the most identified antecedents (enjoy helping, shared narratives, desire to make friends, and reciprocity) are significantly related to hosts’ intention to share accommodations. Interestingly, the overshadowing effect of trust in CouchSurfing on the intention to share accommodations is also found.     

On regulations for 5G: Micro licensing for locally operated networks

Future 5G networks aim at providing new high-quality wireless services to meet stringent and case-specific needs of various vertical sectors beyond traditional mobile broadband offerings. 5G is expected to disrupt the mobile communication business ecosystem and open the market to drastically new sharing based network operational models. 5G technical features of network slicing and small cell deployments in higher carrier frequencies will lower the investment barrier for new entrants to deploy local radio access networks and offer vertical specific services in specific areas and allow them lease the remaining required infrastructure on demand from mobile network operators (MNO) or infrastructure vendors. To realize the full vision of 5G to benefit the society and promote competition, innovation and emergence of new services when the 5G end-to-end network spans across different stakeholders administrative domains, the existing regulations governing the mobile communication business ecosystem are being refined. This paper provides a tutorial overview on how 5G innovations impact mobile communications and reviews the regulatory elements relevant to 5G development for locally deployed networks. This paper expands the recent micro licensing model for local spectrum authorization in future 5G systems and provides guidelines for the development of the key micro licensing elements. This local micro licensing model can open the mobile market by allowing different stakeholders to deploy local small cell networks with locally issued spectrum licenses ensuring pre-defined quality guarantees for the vertical sectors’ case specific needs.     

海洋经济信息资源的共享与保护研究

海洋经济信息资源是海洋资源规划、管理、保护和合理利用的基础信息,是国家重要的基础性、战略性信息资源之一。然而,"共享"与"保护"之间的矛盾性造成了我国海洋经济信息资源管理缺乏协调性、统一性,因此需要开展海洋经济信息资源统一化、标准化管理,加快实施海洋经济信息资源的共享关键技术,建立海洋信息共享机制,建立海洋经济信息资源的安全管理体系,积极参与海洋经济信息资源共享的国际合作。     

An economic evaluation of market development programmes for US dairy products

‘This study measured the effectiveness of US dairy export promotion programmes on increasing foreign demand and enhancing producers’ revenues. An import demand equation based on panel data was used to test whether export promotion has a positive and significant impact on US dairy exports. The effects of various promotion scenarios on the dairy market were then simulated, and benefit–cost ratios (BCRs) for these programmes were estimated. There were three key findings. First, the combined effort of public and private dairy export promotion expenditures had a positive and statistically significant impact on demand for US dairy products in the world market. The findings indicated that export promotion stimulated total dairy exports by 4.14 billion pounds, on average, per year, which represented 55.8% of total exports. Second, US dairy export promotion has been highly profitable for the nation’s dairy farmers. The calculated BCRs, based on assumed elasticity of supply, ranged from a low of 8.54 for the most elastic assumption to a high of 30.12. Third, from an optimality standpoint, dairy farmers are underinvesting in export promotion. The marginal BCRs ranged from a low of 3.79 to a high of 15.22, which means that, at the margin, increasing export promotion expenditures would be profitable for dairy farmers.     

A general framework for price regulation of airports

Price cap regulation (PCR) was first implemented for privatized utilities in the UK in the 1980s. It has since been adopted by numerous countries as a regulatory regime in several sectors. This paper focuses on the development of different forms of price regulation of airports of which PCR is one variant. In countries where airport privatization is still in the early stages, the spectrum of airports and varied nature of regulatory regimes can be confusing and the lack of a general framework can itself become an obstacle to privatization. This paper proposes a general framework comprising decisions to be made for seven variables which is able to accommodate the diversity of airports and varied approaches that may be required as well as transitions between approaches. These approaches include light-handed regulation, price or revenue yield caps, rate of return regulation, earnings sharing, as well as choice of till.