通辽市水稻生产资源分析及前景预测

本文系统地分析了影响水稻生产发展的气侯、土地、水资源和社会因素等．从产量变化、气候变化、经济效益的角度预测了通辽市水稻生产的发展前景．     

Supply Performance in Multi‐Echelon Inventory Systems with Intermediate Product Demand: A Perspective on Allocation

In this article, we study the performance of multi‐echelon inventory systems with intermediate, external product demand in one or more upper echelons. This type of problem is of general interest in inventory theory and of particular importance in supply chain systems with both end‐product demand and spare parts (subassemblies) demand. The multi‐echelon inventory system considered here is a combination of assembly and serial stages with direct demand from more than one node. The aspect of multiple sources of demands leads to interesting inventory allocation problems. The demand and capacity at each node are considered stochastic in nature. A fixed supply and manufacturing lead time is used between the stages. We develop mathematical models for these multi‐echelon systems, which describe the inventory dynamics and allow simulation of the system. A simulation‐based inventory optimization approach is developed to search for the best base‐stock levels for these systems. The gradient estimation technique of perturbation analysis is used to derive sample‐path estimators. We consider four allocation schemes: lexicographic with priority to intermediate demand, lexiographic with priority to downstream demand, predetermined proportional allocation, and proportional allocation. Based on the numerical results we find that no single allocation policy is appropriate under all conditions. Depending on the combinations of variability and utilization we identify conditions under which use of certain allocation polices across the supply chain result in lower costs. Further, we determine how selection of an inappropriate allocation policy in the presence of scarce on‐hand inventory could result in downstream nodes facing acute shortages. Consequently we provide insight on why good allocation policies work well under differing sets of operating conditions.     

从“农夫王国核算”看EDP核算思路的若干问题

文章总结分析了有关文献中出现的三种EDP核算思路,指出了资源价值核算的一些问题,并且讨论了EDP核算中需要注意的几个问题.     

资源异质性、同质性与企业绩效关系研究--以我国医药类上市公司为例

不同企业之间的经营业绩持续地存在差异,但我们的研究表明,此差异将逐步地减小.资源的异质性假设很好地解释业绩差异的持续性,但难以解释为何此差异没有逐步增大.资源的可交易性、可分享性以及制度背景下对产品价值创造过程中标准化的要求致使企业的资源具有同质性,这一因素的存在导致了企业间赢利能力的差异化随时间而递减.     

公司内部控制权的配置状态、寻租主体及治理机制分析

文章深入分析了作为公司治理效率基础的内部控制权配置,不仅考虑到了股东的投票权及其顺延的控制权特征,还注意到了人力资本带来的控制权。在此基础上总体考察股东、董事会和经理层的控制权配置状态及权力主体之间的关系,然后依据董事会层面控制状态的不同,分类剖析不同控制权配置模式的寻租主体和重要的治理机制,以期对公司控制权配置状况与治理机制之间的关系做较深入的诠释,为我国公司控制权配置提供一些启示。     

人力资源中介组织与中介市场的发展

本文以我国人力资源中介组织与中介市场的发展为主线,探讨在新的外部环境下企业管理职能的“外包化”与人力资源中介市场形成的关系,我国人力资源中介组织的发展现状、特征与主要问题,以及完善我国人力资源中介市场的途径与对策等。     

The Efficacy of Neural Networks in Predicting Returns on Stock and Bond Indices*

This paper uses two recently developed tests to identify neglected nonlinearity in the relationship between excess returns on four asset classes and several economic and financial variables. Having found some evidence of possible nonlinearity, it was then investigated whether the predictive power of these variables could be enhanced by using neural network models instead of linear regression or GARCH models. Some evidence of nonlinearity in the relationships between the explanatory variables and large stocks and corporate bonds was found. It was also found that the GARCH models are conditionally efficient with respect to neural network models, but the neural network models outperform GARCH models if financial performance measures are used. In resonance with the results reported for the tests for neglected nonlinearity, it was found that the neural network forecasts are conditionally efficient with respect to linear regression models for large stocks and corporate bonds, whereas the evidence is not statistically significant for small stocks and intermediate-term government bonds. This difference persists even when financial performance measures for individual asset classes are used for comparison.     

西部开发、劳动就业与人力资源证券化战略

高效地配置、使用我国丰富人力资源,使人力资源优势转化为经济优势,对加强西部开发、西部防务与国家劳动就业有重要意义。劳动原始积累—待遇期权—期权转股—周期性人口流动制度,作为人力资源证券化、资本化的核心模式,能把中国丰富劳动力资源转化成像货币资本一样的生产要素自由流动和配置,能把大量劳动者和西部开发紧密“屯”在一起,大大拉动西部乃至国家经济的增长,全面提高综合国力。     

Modelling Resource Allocation in a Decentralized Organization with an AI-Based,Goal-Directive Model*

Modelling the resource allocation decision process in a decentralized organization using mathematical programming decomposition approaches has proven intractable for all but the smallest of problems. In this paper three artificial intelligence (AI) techniques are integrated to model the resource allocation decision process, and the solution for a three-level decentralized organization is illustrated. The techniques are (1) the filtered beam search, which selects a list of potential projects at the subordinate level, (2) the world model, which describes the ordinate and superordinate's worlds and their decision-making processes, and (3) the blackboard model, which allows for global, but selective, storage of information. Benefits of the new approach include: several different mechanisms of managerial control may be modelled, the true information flow in an organization is more closely mirrored, and problems of a more realistic size are now viable. There are three primary ways in which the new model could be useful to management: The desirability and effects of different organizational structures can be modeled, the efficacy of various coordination mechanisms along the organizational structure can be examined, and a subset of projects from a wider list of possibilities can be selected. Also, an example is given showing how the model may be extended to scenarios with asymetric information and divergence of preferences, whereby subordinates have different objectives than their managers and where there is no way for managers to verify the truthfulness of their subordinates' responses.     

我国高校人力资源管理的现状与思考

人力资源是社会经济发展的关键,也是高校发展的核心因素.本文对我国高校人力资源管理的特点及现状做了简要的概述,并针对高校目前存在的问题提出了相应的解决思路.