LOGISTICS SALIENCE IN A CHANGING ENVIRONMENT

The primary purpose of this paper was to empirically explore some of the reasons that logistics has become more important, or salient, in comparison to other functions within the firm. A survey of 296 managers across multiple industries in the U.S. found logistics becomes more important within the firm when the industry increases in uncertainty, when there is an emphasis on time‐based competition, when there is greater adoption of information technology, and when there is an emphasis on cross‐functional integration.     

我国金融监管的现状与对策分析

“入世”后我国金融监管面临严峻挑战。如何适应新形势建立高效的金融监管体制成为我国经济发展中一个非常重要的问题。文章通过“入世”后对我国金融监管带来的冲击以及目前金融监管存在的问题分析 ,提出转变我国金融监管的对策。     

The division of labour and market structure

Most firms produce most of the time under conditions of substantial economies of scale. The division of labour, according to Adam Smith the mainspring of wealth, is intrinsically an economies of scale phenomenon. Market structure in most industries in characterized by a small number of suppliers and a larger number of customers. I explain this law of small numbers as the equilibrium of two forces: the deconcentration effect of imitation and the market spliting effect of further refinements in the division of labour by innovation. A deconcentrated market creates larger incentives for market splitting (product differentiation) by innovation than a concentrated market. But market splitting raises concentration in the market and it raises the number of different markets in the economy. Before the economies of scale of old products are fully exploited, new products are being offered which again are produced under conditions of economies of scale.     

The adequacy of asymptotic approximations in the near-integrated autoregressive model with dependent errors

We consider the normalized least squares estimator of the parameter in a nearly integrated first-order autoregressive model with dependent errors. In a first step we consider its asymptotic distribution as well as asymptotic expansion up to order O_p(T⁻¹). We derive a limiting moment generating function which enables us to calculate various distributional quantities by numerical integration. A simulation study is performed to assess the adequacy of the asymptotic distribution when the errors are correlated. We focus our attention on two leading cases: MA(1) errors and AR(1) errors. The asymptotic approximations are shown to be inadequate as the MA root gets close to −1 and as the AR root approaches either −1 or 1. Our theoretical analysis helps to explain and understand the simulation results of Schwert (1989) and DeJong, Nankervis, Savin, and Whiteman (1992) concerning the size and power of Phillips and Perron's (1988) unit root test. A companion paper, Nabeya and Perron (1994), presents alternative asymptotic frameworks in the cases where the usual asymptotic distribution fails to provide an adequate approximation to the finite-sample distribution.     

AN EVALUATION OF PROCESS‐ORIENTED SUPPLY CHAIN MANAGEMENT FRAMEWORKS

Supply chain management (SCM) is implemented by integrating corporate functions using business processes within and across companies. Several process‐oriented frameworks for SCM have been proposed but only two of these provide sufficient detail to enable implementation. We evaluate the Supply‐Chain Operations Reference (SCOR) framework and The Global Supply Chain Forum (GSCF) framework using four criteria and identify their relative strengths and weaknesses.     

国有企业“债转股”政策:功能缺陷与制度依赖——项基于国有企业“债转股”政策跟踪调查的研究

伴随着我国经济体制改革向纵深发展,国有企业负债比率过高的问题更加突出显示出来。为了解决这个问题,我国实施了“债转股”政策。本文讨论四个命题:(1)国有企业是负债比率过高还是收益率过低;(2)“债转股”政策究竟是使国有企业“财务解困”还是“体制解困”;(3)“债转股”政策究竟是转移金融风险还是化解金融风险;(4)资产管理公司为国有企业和国有商业银行解困,将来谁为资产管理公司解困。本文认为“债转股”政策设计存在功能缺陷与制度依赖。国有企业“债转股”政策的成功依赖于国有企业(商业银行)现代企业制度的建立与完善。     

产业集群的演进:一个基于专业化分工视角的解释

产业集群的形成是专业化分工产业的报酬递增的一种空间表现形式,是一个劳动分工深化、交易效率提高的过程.如果从分工角度考察,产业集群是形成专业化分工的产物;同时,分工和专业化的发展与产业集群之间表现出高度的一致性.     

长三角城市群产业一体化发展研究——城际战略产业链的视角

伴随着城市群的发展,城市间产业分工开始向产业链分工方向发展。各城市按照产业链的不同环节进行专业化分工,形成不同类型和层次的城际产业链,城市间基于城际产业链尤其是城际战略产业链的分工协作关系加快了城市群产业一体化的进程。本文构建由产业战略力维度和城际链接力维度构成的城市群产业一体化发展模型,利用该模型确定长三角城市群三大城际战略产业链,依据产业链各环节的优区位要求,对三大城际战略产业链在城市群地区进行空间布局。最后指出,加快城市群产业一体化的关键是,城市群城际战略产业链类型的正确选择和城际战略产业链环节的合理布局和优化组合。     

中国劳动力市场的二元分割及其就业效应

我国的劳动力市场既有经济转型时期的非规范性，又有发展中国家二元经济和二元社会结构的特征，存在二元四级分割的情况。运用哈里斯-托达罗模型及成本-收益分析方法，可以考察我国二元四级市场上的劳动力流动状况及其就业效应。     

贸易投资一体化与当代国际贸易理论的创新

传统的国际贸易理论和国际直接投资理论是相互背离的,新古典国际贸易模型的框架完全排斥了直接投资的存在,直接投资的存在既无可能,也无必要。而解释投资的种种理论所采取的分析框架也难以容纳和解释国际贸易,但当前的事实表明,贸易和投资不仅共存,而且贸易投资一体化的发展趋势越来越明显。贸易投资一体化的迅速发展,不仅对国际分工产生了深远的影响,同时也对传统的国际贸易理论也提出了诸多挑战,国际贸易理论亟待创新。在分析国际分工变化的基础上,本文就国际贸易理论的创新进行了分析和研究,提出了自己的看法和研究新思路。