融资约束与中国企业的进口行为

本文采用贸易四元边际的分析框架,实证分析了融资约束对企业进口行为的影响,并对比了非金融危机、金融危机背景下融资约束对企业进口行为影响的差异性。主要发现:(1)融资约束对企业进口决策存在显著的抑制作用,融资约束会显著抑制企业的进口行为,包括进口规模、进口来源国数量、进口产品种类。(2)相对于外资企业,内资企业的进口行为更容易受融资约束的影响;相对于一般贸易,企业的加工贸易进口更容易受融资约束的影响;相对于只进口的企业,同时具有进口和出口行为的企业更容易受到融资约束的影响。另外,不同行业的企业、不同地区的企业受融资约束的影响也具有较大的差异。(3)不同的外部金融环境导致融资约束对企业进口行为的影响存在显著差异。金融危机导致企业的进口行为对融资约束表现出更强的敏感性,高融资约束企业与低融资约束企业在进口四元边际上的差距被进一步拉大。     

Evaluating the solution performance of IP and CP for berth allocation with time-varying water depth

This paper considers the berth allocation problem (BAP) with time-varying water depth at a tidal river port. Both integer programming (IP) and constraint programming (CP) models are developed. Numerical experiments find that CP tends to be superior to IP when the feasible domain is small (e.g. dynamic vessel arrivals), when the restriction of the objective towards decision variables is loose (e.g. makespan, departure delay), or when the size of IP models is too large due to fine time resolution. Meanwhile, CP’s incapability of proving optimality can be compensated by post-optimization with IP, by using a simple CP/IP hybrid procedure.     

财政分权视角下的地方政府债务研究:一个综述

本文通过在财政分权的框架下对地方政府债务的成因、影响、管控的相关理论分析和经验研究的梳理,总结了较为成熟的财政联邦经济体在地方债务管理实践中的经验教训,同时,也对正处于分权化改革当中的转型国家的地方政府债务问题进行了总结,并最终落脚到中国的地方政府债务问题上来。中国的地方政府债务问题因与分税制度不完善、地方官员激励扭曲、地方融资平台不规范、宏观调控和财政政策需要等问题联系在一起而更加错综复杂,需要在借鉴已有研究的基础上结合中国的现实制度特征做进一步深入研究。     

Portfolio delegation under short-selling constraints

Summary. In this paper we study delegated portfolio management when the manager’s ability to short-sell is restricted. Contrary to previous results, we show that under moral hazard, linear performance-adjusted contracts do provide portfolio managers with incentives to gather information. We find that the risk-averse manager’s effort is an increasing function of her share in the portfolio’s return. This result affects the risk-averse investor’s choice of contracts. Unlike previous results, the purely risk-sharing contract is now shown to be suboptimal. Using numerical methods we show that under the optimal linear contract, the manager’s share in the portfolio return is higher than what it is under a purely risk sharing contract. Additionally, this deviation is shown to be: (i) increasing in the manager’s risk aversion and (ii) larger for tighter short-selling restrictions. As the constraint is relaxed the deviation converges to zero.Received: 25 July 2002, Revised: 12 December 2004, JEL Classification Numbers: D81, D82, J33.Juan-Pedro Gómez: Correspondence toAn earlier version of the paper was circulated under the title “Providing Managerial Incentives: Do Benchmarks Matter?” We are grateful to an anonymous referee whose comments helped to improve the paper. We also thank comments by Viral Acharya, Alexei Goriaev, Ernst Maug, Kristian Rydqvist, Neil Stoughton, Rangarajan Sundaram, Fernando Zapatero and seminar participants at the 1999 SED meetings in Sardinia, the 1999 Workshop in Mutual Fund Performance at EIASM, Brussels, the 2000 EFA meetings in London, the Bank of Norway, the Stockholm Schools of Economics, the Norwegian School of Management and the 2001 WFA meetings in Tucson. Sharma gratefully acknowledges financial support from the Asociacion Mexicana de Cultura.     

政策性负担、预算软约束与大型涉农金融机构激励机制设计

本文应用多任务委托代理模型,分析政策性负担下大型涉农金融机构的预算软约束问题。通过求解政府和代理人(经营者)的动态均衡,提出分离政策性业务和商业性业务、明确商业性涉农金融业务不补贴政策、加强监督等措施,可有效激发代理人的努力程度。     

银行负债、预算软约束与企业投资

国外的研究认为负债能降低企业的代理成本。影响企业的投资行为。本文从预算软约束的视角，实证检验了我国企业银行负债的这种治理作用，研究结果表明，总体上我国企业银行负债抑制了投资规模的扩张；但相对于非国有控股上市公司来说，国有控股上市公司因具有更强的预算软约束预期，银行负债对其投资规模扩张的抑制作用更弱；相对于中央国有控股上市公司来说，地方国有控股上市公司的银行负债对其投资规模扩张的抑制作用更弱。     

Accrual components and stock trading costs

This paper examines the relationship between accrual components and stock trading costs in China and finds that both abnormal and normal accruals are associated with these costs. Moreover, negative accruals, both abnormal and normal, have a greater influence on stock trading costs than positive accruals because of short-selling constraints in the Chinese stock market. Further analysis reveals that investors who are fixated on accruals are unable to separate positive or negative abnormal accruals from earnings in general. Additionally, investors overestimate the persistence of both positive and negative normal accruals. These findings constitute further evidence of the low degree of market efficiency in China. Chinese investors seem to overestimate firm value when abnormal and normal accruals are positive and underestimate it when they are negative, thus leading to an asymmetric effect on trading costs between positive and negative accruals in the face of short-selling constraints in the Chinese stock market.     

Testing Competing Models of the Leisure Constraint Negotiation Process in a Corporate Employee Recreation Setting

Four models of leisure constraint negotiation (independence, buffer, mitigation, reduction) based on competing views of how constraint, negotiation, and motivation are interconnected and influence participation were tested using regression and structural equation modeling procedures. Full-time employees ( N = 186, X age = 36.7 years, 64.5 percent females) of four companies with similar work site recreation services completed a survey measuring participation in work site physical recreation activities, constraint on participation, negotiation resources, and motivation to participate. Strong support was found for the constraint - effects - mitigation model. Though constraints decreased the level of participation, they also triggered greater use of negotiation resources, which counteracted their negative effects. Stronger health and enjoyment motives also resulted in employees increasing negotiation efforts. The results support several of the constraint negotiation propositions developed by Jackson, Crawford, and Godbey (1993) and a theoretical model that clarifies the role of motivation and distinguishes between the negotiatory and facilitatory functions of negotiation resources.     

外资并购后增资的生产力效应:物化技术与激励约束

外资并购后增资目标企业不仅仅增加资本数量从而缓解资金短缺矛盾,而且因为物化技术的存在更能便利中方提高技术水平;不仅如此,并购后增加费本还能在一定程度上提高中方企业经理和员工的激励水平.当然,外资方增加资本过多将导致独资化出现.     

农户金融抑制及其福利损失的计量分析

本文运用biprobit模型和match模型,采用3000个农户的微观数据,计量分析了农户金融抑制的程度及其福利损失的大小。研究发现,农户金融抑制的程度为70.92%;由于金融抑制,所有样本农户平均所损失的纯收入、净经营收入、消费性支出和非土地性资产分别为9.43%、15.43%、15.57%和14.58%,直接受到金融抑制的样本农户平均所损失的纯收入、净经营收入、消费性支出和非土地性资产分别为9.55%、16.83%、16.46%和14.70%;土地面积、教育和医疗费用支出,对农户资金需求具有正的显著影响,金融资产余额对农户资金需求具有负的显著影响,生产性固定资产原值、受教育水平、交通条件和地理位置对农户资金需求的影响不显著;土地面积、受教育程度、地理位置和“关系”对资金供给具有正的显著影响,固定资产总值、交通条件对资金供给的影响不显著。