我国农产品物流要素贡献率实证研究

本文根据1991-2005年我国农产品物流行业投入产出数据,利用生产函数拟合法对影响农产品物流行业发展的劳动力、资本、技术三大要素贡献率进行计算与分析:资本投入和技术进步是推动我国农产品物流行业增长的主要力量,劳动要素对农产品物流行业的贡献相对有限。我国农产品物流行业面临劳动要素贡献低,而资本、技术要素虽贡献率高但起点较低的困境。因此必须完善硬件设施、提高技术水平和劳动者素质。     

Multi-item EOQ inventory model with varying holding cost under two restrictions: A geometric programming approach

In this paper we provide a simple method to determine the inventory policy of multiple items having varying holding cost using a geometric programming approach. The varying holding cost is considered to be a continuous function of the order quantity. The EOQ inventory model with constant holding cost and the classical EOQ inventory model without constraints are derived.     

中原地区农村生活污染整治的博弈分析

选取中原农村地区具有代表性的市县为研究对象,分析农村生活污染整治的低效原因。根据污染整治的三大参与者——村民、农村保洁员和基层政府的行为分别建立静态、动态博弈模型进行分析,找出农村生活污染整治的制约因素,并提出生活污染整治的建议。结果表明:要有效整治农村生活污染,需加强对村民的环保意识教育,树立保护环境的责任感和使命感,并积极倡导村民之间相互监督,杜绝"搭便车"现象;建立良好的信誉环境,营造"保护环境光荣,污染环境可耻"的社会氛围,提高环境保护者的信誉得益;成本是影响各主体参与污染整治积极性的重要因素,政府应宏观调控加大奖惩措施,且环境保护应由上至下、从中央到地方层层落实。     

“产学研”导向的人力资源管理专业教学研究

随着社会对人力资源管理专业人才需求的迅速增长,作为培养复合型和应用型人才的重要途径,人力资源管理专业实践教学体系的研究也受相关各方的关注。“产学研”导向的人力资源管理专业实践教学模式,是一种对企业人才需求的主动反应,它能增强高校与企业合作性,培养出更符合社会经济发展的应用型人才。论文阐述了实践教学对人力资源管理专业人才培养现实意义,并提出“产学研”导向的实践教学模式,这将有利于教学内容上的侧重、教学体系的构建、学生专业核心技能的提高、校企合作关系的建立等。     

复杂产品系统协同生产体系框架及多视图概念模型

文章分析了复杂产品系统协同生产的特性,探讨了复杂产品系统协同生产体系框架,并从功能、组织、过程、信息四个方面建立了复杂产品系统协同生产的多视图概念模型（功能模型、组织模型、过程模型和信息模型）,全面系统地描述了复杂产品系统协同生产的功能结构、特性和运行方式。     

中国市场价格扭曲测度：1952-2005

理论上,可以通过考察实际生产状态与潜在最优生产状态之间的差距,反映资源利用效率与市场扭曲程度。通常可以区分三类市场扭曲：生产无效率与要素市场局部价格扭曲、产品市场价格扭曲、要素市场全局价格扭曲。本文将各种市场扭曲的影响整合在统一框架内测度,以有效分析其相对强弱程度。使用随机前沿分析技术刻画生产可能性边界（PPF）,利用中国31个省区1952-2005年面板数据建立计量模型,进行中国市场扭曲程度测度,并展开时期比较与地区比较。     

顾客化大量生产环境下生产管理的新问题及共对策研究

本文重点讨论了顾客化大量生产给生产管理带来的新问题,从生产过程组织、计划、控制等角度提出实施顾客化大量生产应着重解决的问题及研究建议.     

"大上海国际化都市圈"的整合与建构——中国长三角城市群差序化格局创新研究

纵观世界城市化的发展,城市群正在成为国家与区域经济发展的主要动力要素之一。中国正处在城市社会来临的社会变迁过程中,城市群的总体发展一直未能突破传统的体制性障碍,形成具有国际化功能大都市圈,更没有形成具有中国本土化特色的城市群发展关系。面对全球化的城市竞争,城市群的发展及建构关系到国家现代化的发展战略和模式选择,中国的城市群要想在世界城市全球竞争的关系中占居世界经济价值链的高端区位,必须创造合理的、跨行政区域的、有内在市场机制关系的“城市群差序化格局”,并通过构建新型的城市群结构体系,直接参与城市全球化的竞争,创造中国区域现代化示范区。     

An integrated production and inventory model for a whole manufacturing supply chain involving reverse logistics with finite horizon period

This paper proposes a model and solution method for coordinating integrated production and inventory cycles in a whole manufacturing supply chain involving reverse logistics for multiple items with finite horizon period. A whole manufacturing supply chain involving reverse logistic consists of tier-2 suppliers supplying raw materials to tier-1 suppliers, tier-1 suppliers producing parts, a manufacturer which manufactures and assembles parts from tier-1 suppliers into finished products, distributors distributing finished products to retailers, retailers selling products to end customers and a third party which collects the used finished products from end customers, dissembles collected products into parts, and feed the parts back to the supply chain. In this system, we consider a finite horizon period. A mathematical model for representing the behaviors of the system is developed. Solution methods based on decentralized and a combination of decentralized and centralized decision making process, referred to as the semi-centralized decision making process, are proposed to solve the model while the centralized decision making process is solved by a mixed integer nonlinear programming method. A numerical example is used to demonstrate the model and the solutions based on the three types of the coordination.     

The optimality of age-based lockdown policies

This paper studies an age-based lockdown that keeps over-60 workers at home as policy response to COVID-19 pandemic in a sample of thirty countries of the European single market. Three main policy issues are addressed, and the results can be summarized as follows. First, age-based lockdown policies are associated with limited output losses and, therefore, are an efficient strategy to limit the spread of the virus in a pandemic, especially in presence of strong age-dependent fatality rates. Second, lockdown policies generate substantial spillover effects; hence, international policy coordination avoiding that too many countries are in lockdown contemporaneously or that such coordination takes place across the countries with the highest integration of over-60 workers along GVCs may be helpful in reducing disruptions. Third, non-targeted lockdowns are much more costly than age-based ones; therefore, other things equal, age-based policies should always be preferred to non-targeted ones. Our analysis also suggests that, in our sample, the over-60 workers are relatively more numerous in sectors where the value added and the integration in GVCs is lower; this feature should be kept in mind in the design of other policies as it might play an important role.