自动化立体仓库监控系统典型结构模式分析

论文介绍了自动化立体仓库监控系统的典型结构模式,并分析了集中控制式、功能分散式、分层分布式的结构特点;并通过与集中控制式比较,重点分析了分层分布式自动化立体仓库监控系统结构的优缺点;对自动化立体仓库监控系统结构的发展趋势进行了概述。     

三层委托代理关系下的高新技术中小企业知识型员工激励机制设计

如何有效地激励知识型员工是高新技术中小企业所面临的一个关键问题。在深入分析高新技术中小企业知识型员工激励影响因素后,借鉴委托代理理论并应用柯布-道格拉斯生产函数,在已有文献的基础上放宽了假设条件,以便能更准确地反映高新技术中小企业的实际情况。企业所有者、团队主管、知识型员工之间是三层委托代理关系,讨论了非对称信息下企业、团队和员工均为风险中性,企业风险中性、团队和员工风险规避两种不同组合情况,分别设计出了有针对性的最优激励机制,并提出了结论与建议。     

Turning from crime: A dynamic perspective

This paper examines criminal choice using a variant of the human capital model. The innovation of our approach is that it attempts to disaggregate individual capital, not unlike production-based studies which disaggregate physical capital into equipment and structures. We disaggregate an individual’s capital stock into the standard human capital component as well as a utility generating component that we call social capital. In our set-up, social capital is used to account for the influence of social norms on the decision to participate in crime. This is done by modeling the stigma of arrest as a reduction in the individual’s social capital stock. We also allow individuals to account for the impact of their criminal actions on their probability of arrest. In order to estimate the structural parameters underlying the model, we make use of computationally intensive methods involving simulated generalized method of moments and value function approximation. The empirical results, based on panel data from the Delinquency in a Birth Cohort II Study, support the social capital model of crime and reveal significant state dependence in the decision to participate in crime.     

Specification testing in discretized diffusion models: Theory and practice

We propose two new tests for the specification of both the drift and the diffusion functions in a discretized version of a semiparametric continuous-time financial econometric model. Theoretically, we establish some asymptotic consistency results for the proposed tests. Practically, a simple selection procedure for the bandwidth parameter involved in each of the proposed tests is established based on the assessment of the power function of the test under study. To the best of our knowledge, this is the first approach of this kind in specification of continuous-time financial econometrics. The proposed theory is supported by good small and medium-sample studies.     

Parametric estimation of inefficiency in cargo handling in Spanish ports

Port workers services have been usually heavily regulated and reserved exclusively for a special kind of workers, dockworkers, which seems to have been the cause of serious inefficiencies worldwide. During the eighties, law reforms have been introduced to solve this problem. In this paper we analyze and decompose efficiency in cargo handling operations in 19 Spanish ports from 1990 to 1998. The method chosen is that of the parametric estimation of both allocative and technical inefficiency using panel data and a quadratic cost function. Results show that although inefficiency has decreased overall, there has been over utilization of labor regarding capital, and technical inefficiency. This supports the need of further consideration of other aspects including competition.

高阶矩风险与金融投资决策

针对传统投资组合理论没有考虑高阶矩风险这一缺陷,总结近期金融领域中有关偏度和峰度的研究成果,基于"均值-方差"效用函数的Taylor展开,讨论了投资者对高阶矩风险(偏度风险和峰度风险)的偏好特征。     

国内产品功能集成创新原理研究综述

多功能集成化的产品是技术发展和产业发展的必然结果,功能集成创新是未来产品功能创新的一大趋势。文中对国内产品功能集成创新的相关研究成果进行了梳理,分别从集成与产品功能集成的概念、产品功能集成创新技法、功能集成与企业绩效的关系、功能集成对企业组织与产业组织的影响等多个领域,系统地介绍和阐述了产品功能集成研究的进展及其焦点问题。     

承继与变迁:城市住房功能分析

采用功能分析的方法对新时期城市住房的功能进行研究发现,城市住房功能呈现"显功能"让位于"潜功能"、"潜功能"显性化以及功能多元化的发展特点。新时期城市住房承继着生活必需品的功能,同时又有着新的功能变迁,也正因为功能的承继与变迁,助推了新时期城市房价的上涨。     

港口交通机电设备管理信息化建设研究

机电设备管理人员只有加强设备制度的管理和设备维修方面的管理,才能保证机电设备的完好率,使事故率降低到最小限度,保证企业高产高效,安全生产,提高企业的经济效益。文中从机电设备管理信息化角度剖析存在的问题,并提出改进建议。     

频率副词“连连”与“一连”的语用功能比较

从对外汉语教学实践来看,频率副词"连连"与"一连"具有一定的习得偏误。在语用功能上,"连连"与"一连"的差异主要体现在以下两个方面:在句类选择上,"连连"的唯一性和"一连"的多样性对立;在语体色彩上,"一连"比"连连"具有更浓厚的口语色彩。这可能与它们出现年代的早晚和衍生的来源有较大的关系。