Government Consumption and Industrial Productivity: Scale and Compositional Effects

Within a production function framework in which government spending produces public goods which enter firms production functions, empirical tests using time series data spanning eleven countries and thirty industries find both the scale and the composition of government consumption spending to affect the level and the rate of growth of total factor productivity at the industry level.Jel Classification: H50, D24     

需求受服务水平影响的卖方消费信贷协调机制研究

在零售商的信贷消费需求受金融企业的信贷服务水平影响的情形下,研究了由一个制造商、一个零售商和一个金融企业组成的卖方消费信贷系统的协调问题。运用动态博弈理论分别建立了集中式决策模型、分散决策模型、收益共享契约模型以及收益共享与成本共担的联合式契约模型,研究表明所设计的收益共享与成本共担的联合契约有效解决了传统的收益共享模型无法实现系统协调的问题,并给出了实现系统协调时的收益共享比率与努力成本分担比率,以及实现系统利润在零售商和制造商之间任意分配的参数范围。最终通过数值分析验证了所提出的协调契约模型的有效性。     

消费需求与投资需求协调增长

经济增长的动力，从根本上讲来自需求。需求增长与经济增长之间的相关关系十分显著。从扩大内需的两个主要内容--投资需求与消费需求对经济增长作用的特点来看，投资需求对经济增长的短期拉动作用十分明显，但要保证经济增长的质量并保持今后经济长期、快速、健康发展，仅仅依靠投资的增长是不够的，还必须要保证消费需求的协调增长。促进消费需求增长是提高经济增长质量的关键，因此应把鼓励和促进消费作为拉动经济增长的重大措施，作为当前经济工作的一项重要内容。     

中国股市与汇市波动溢出效应研究

以上证综合指数和人民币兑美元名义汇率为指标,运用多元GARCH模型对中国股票市场和外汇市场之间的波动溢出效应进行实证研究。结果表明：汇率制度改革后,我国股市与汇市存在显著的双向波动溢出效应;汇市对股市表现出较强的波动传导,而股市对汇市的波动传递则相对较弱,存在着波动传导的非对称性。     

基于亲景度的九江国际入境旅游市场分析

亲景度是衡量游客对目的地偏好的指标。文章用大量数据,介绍2005-2014年九江国际入境旅游概况,并计算13个主要客源国对九江的亲景度,分析亲景度差异的原因,在此基础上提出九江市场营销策略。文章认为,英国、法国、德国、美国是九江最重要的客源国,应充分重视。     

纳入品牌效应的纵向合作广告成本直接分担模型研究

本文研究了合作广告成本直接分担方式下的供应链纵向合作广告问题,考虑了制造商的全国性广告对品牌效应的影响,运用微分对策方法建立模型,根据最优控制理论的极值原理和Hanmilton-Jacobi-Bellman(HJB)方程求得Stackelberg博弈和协同合作博弈下的最优广告策略,并对模型的最优解进行了比较分析。     

Welfare Effects of Endogenous Information Acquisition and Disclosure in Duopoly Markets

Abstract

This paper investigates the interaction between firms' information acquisition decisions and disclosure of internally acquired information in a Cournot duopoly market under demand uncertainty. The main results are as follows. When the correlation between firms' demands is positive and sufficiently high, disclosure of information on demand uncertainty can enhance social welfare, given that the quality of firms' private information is constant. However, in the setting where firms' private information is endogenously determined, mandatory disclosure is not always desirable. This is because, when disclosure is mandated, firms acquire less precise information compared with the case where the acquired information is not disclosed; hence, their internal information environments are deteriorated. This can lead to unintended consequences such that disclosure regulation decreases social welfare.     

Strategic Invasion in Markets with Switching Costs

We investigate the role of consumer switching costs in a three-stage model in which the entrant and the incumbent firm set prices sequentially and then the consumers decide from which firm to buy. We characterize the unique subgame perfect equilibrium and find that even an entrant with a higher marginal cost may profitably invade part of the market due to the existence of switching costs. Switching costs benefit both firms but harm consumers. This model is used to understand pricing behavior in the US telecommunications industry.     

带有费用约束和广告投入的Newsboy模型

文章假定产品的需求受广告的影响,且假定期望需求是投入广告费用的递增凹函数,以最大期望利润为目标,考虑了带有预算费用约束条件下的Newsboy问题,分别建立了带有订购成本预算费用约束、广告预算费用约束、订购成本费用和广告费用同时进行约束的非线性规划最优化模型,并利用Kuhn-Tucker条件来求得最优解,同时进行了灵敏度分析,最后给出了一些关于物流供应管理方面的启示。     

物流网络规模与区域经济发展关联度及协调度分析——以天津市为例

从灰色关联模型人手,计算了2004-2009年天津市物流网络规模与区域经济的关联程度及协调度,表明物流网络规模各衡量指标与区域经济发展水平各衡量指标的关联程度存在差异,其中第一、二产业产值、外贸进出口总额和社会消费品零售总额与物流网络规模关联程度较大,物流节点企业数量、公路、铁路营业里程、货运量和货运周转量与区域经济发展水平关联度较大.物流网络规模与区域经济发展水平的协调程度存在时间演化趋势,从2004-2009年均处于协调程度不断增强的阶段.     

物流网络规模与区域经济发展关联度及协调度分析——以天津市为例

从灰色关联模型入手,计算了2004-2009年天津市物流网络规模与区域经济的关联程度及协调度,表明物流网络规模各衡量指标与区域经济发展水平各衡量指标的关联程度存在差异,其中第一、二产业产值、外贸进出口总额和社会消费品零售总额与物流网络规模关联程度较大,物流节点企业数量、公路、铁路营业里程、货运量和货运周转量与区域经济发展水平关联度较大。物流网络规模与区域经济发展水平的协调程度存在时间演化趋势,从2004-2009年均处于协调程度不断增强的阶段。     

大规模风电并网地区无功协调控制策略研究

以电网故障扰动为约束,研究大规模风电并网对系统稳定的影响。研究了含风电场的配电网无功优化模型和算法,提出汇集站附近火电机组参与无功协调控制的策略;研究协调火电、风电、SVC/SVG等无功电源设备的相互配合问题。本文选取某风电场汇集站(含火电、风电)的合理算例,验证了该策略和算法的优越性。     

广告中的不正当竞争行为

改革开放以来，我国的广告事业取得了飞速发展，在市场开拓和信息传播等方面起到了积极的作用。但同时，我们也该清楚地看到，当前广告活动中的不正当竞争行为表现得日益突出，严重地损害了广大经营和消费的合法权益，扰乱了社会主义市场秩序。本通过对广告活动中各种不正当竞争形式的分析，探究其形成的原因，进而提出解决这些不正当竞争的对策。     

Competition in Regulated Markets with Sluggish Beliefs about Quality

We investigate the effect of competition on quality in regulated markets (e.g., health care, higher education, public utilities), using a Hotelling framework, in the presence of sluggish beliefs about quality. We take a differential‐game approach, and derive the open‐loop solution (providers choose the optimal quality investment plan based on demand at the initial period) and the feedback closed‐loop solution (providers observe demand in each period and choose quality in response to current demand). If variable costs are strictly convex, and the degree of cost complementarity between quality and output is not too strong, the steady‐state quality is higher under the open‐loop solution than under the feedback solution. In both solutions, quality and demand move in opposite directions over time on the equilibrium path to the steady‐state. While lower transportation costs or less sluggish beliefs lead to higher quality in both solutions, the quality response is weaker when players use feedback strategies.