中国证券业的范围经济研究

基于广义超越对数函数,本文考察了2006-2011年间国内76家综合型证券公司业务经营的范围经济效应。研究结果显示,国内证券公司经营过程中普遍存在范围经济效应,并且大型证券公司的范围经济效应比中小型证券公司高。为此,本文提出证券监管部门应该鼓励证券公司进行业务创新,减少对证券公司业务开展的限制;鼓励证券公司之间的兼并。证券公司应该加快金融创新的步伐,不断开发新的产品,完善内部管理机制。     

自然垄断的"三位一体"理论

传统自然垄断理论是建立在规模经济、范围经济和成本劣加性基础之上的，本文认为社会总价值或总效用和社会净收益的优加性是比成本劣加性更好地定义自然垄断的概念，并在对规模经济、范围经济和网络经济重新定义的基础上，从规模经济、范围经济、网络经济“三位一体”角度重新解释了自然垄断概念，提出了自然垄断的“三位一体”理论，为自然垄断产业规制及其改革奠定理论和实证基础。     

A Fourier analysis of the US dairy industry

Measurement of economies of scale and scope is particularly important for predicting growth and product diversification. However, estimates are useful only to the extent the underlying production technology is modelled accurately. This study measures economies of scale and scope in the rapidly changing US dairy industry with a Fourier flexible cost function, which provides a global approximation of the unknown function. We use the high quality national Agricultural and Resource Management Survey (ARMS) survey data. We find economies of scale at most firm sizes and persistent economies of scope across firm sizes in this industry, which is counter to estimates from two Diewert‐flexible functional forms.     

中国汽车行业市场结构分析及启示

本文分析了中国汽车行业的市场结构的现状,认为我国汽车工业存在着这样的问题：中小企业众多、达不到规模经济,主导企业“大而全”、国际竞争力不强。文章接着分析了这些问题产生的原因,并提出了一些政策建议：加强主导产业的专业化生产,规制地方政府行为,加快产业内整合和重组等。     

Choice of the empirical definition of zero in the translog multiproduct cost functional form

The translog cost function is valuable to researchers for empirical analysis in themodelling of indirect cost and profit functions. A flaw of the functional form is in themodelling of zero output values. This study examined the impacts of empirical definition of zero output values on price elasticities, economies of scope and scale, using the translog cost function. Estimation of a system of cost and factor share equations with regularity condition imposed was conducted. Results show that the choice of default values affects policy recommendations.     

范围经济与商业企业地理集群

商业企业地理集群已成为21世纪中国市场经济发展的新景观。基于博弈论构建了线性空间中寡头垄断市场结构下商业企业的区位选择模型,探究了商业企业空间集聚的经济机理。证明了在消费者具有多样化偏好的环境下,经营差异化产品商业企业的市场需求相互依赖,这导致了企业区位选择过程中的范围经济性。商业企业地理集群是具有完美预期的商业企业对消费者购物行为反应的均衡结果。还发现在均衡中商品的价格随着市场群落中产品差异性的扩大而增加。区位选择的模型不仅揭示了商业企业地理集群的经济机理,还可以解释涉及市场群落的许多现象。     

Technical and scale efficiencies of meat goat farms in the USA

This study determines i) scale and technical efficiencies, ii) marginal productive contributions for inputs and outputs and iii) efficiency drivers of meat goat farms in the USA. We estimate an input distance function (IDF) using a stochastic production frontier (SPF) technique. The average technical efficiency (TE) for the USA meat goat whole farm was 0.74. The operator education level, percentage of annual net farm income from the goat operation, regional differences and holding of an off farm job are the efficiency drivers of USA meat goat farms. We find increasing returns to scale (RTS) for USA meat goat farms. Our results suggest that USA meat goat farms can be scale efficient if their optimal size of operation is greater than approximately 64 goats or greater than 40 breeding does. Empirical Monte Carlo (MC) simulation techniques show the consistency of finite-sample properties for the input distance function.     

规模经济与范围经济在企业成长生命周期中的应用

随着社会分工逐步深化 ,企业一般主要通过追求范围经济与规模经济两条途径来降低经营成本 ,从而使企业逐步壮大。同时 ,企业在规模经济与范围经济两者中进行选择时是应根据自身所处的不同成长阶段而有所差异 ,这更能使企业做大做强 ,永保活力。     

企业多元化决策的一个理论模型

本文通过建立数学模型，描述了业务市场特征线的特征以及企业多元维度和规模选择与企业资源及市场特征之间的关系，并讨论了企业多元化决策的一般逻辑过程。本文目的在于为企业的多元化决策和从事该领域研究的学者提供一个基础性的理论分析框架。     

The relative importance of capital inflows: some evidence from emerging market economies

This article examines the relative importance of the main components of capital inflows for a sample of emerging market economies. Does composition matter? Is there a nexus between capital inflow components? We assess, firstly, how each capital inflow component reacts to important macro and policy variables, and secondly, how the components themselves interact. We find that bank inflows appear the most sensitive to macro factors, institutions matter more for Latin America and external financial factors matter more for Asia. Further, for Latin America, capital inflows interact largely as complements, while for Asia, any expansion of bank inflows might crowd out FDI and portfolio flows.     

The innovation of China＇s farm products marketing

Aimed at the current actuality of farm products in China, the key point is the innovation of marketing if we want to share farm products market. This article discusses on four aspects： The innovation of both tactics and strategies of the farm products marketing; using the new marketing means, selling the products on Internet; improving the standard of the products, opening out the green products; the new sale mode. This article will give the active effect for the China＇s farm products market ing.     

Which Chinese Markets to Diversify into?

This paper investigates the correlation and feedback relationships between the Hong Kong Hang Seng Index (HSI), the Hang Seng Chinese Enterprise Index (CEI) and the S&P 500 Index (SP). We divide the indexes into two separate periods, from the inception of the CEI in 1994 to the stock market crash in 2000, and from 2001 to 2011. Our results show that the feedback relationship between the CEI and the SP is stronger after 2000. As the feedback relationship grows stronger, the diversification benefit reduces for US investors who utilizes the CEI as a tool for diversifying into Chinese markets.     

市场结构、规模经济与中国铁矿石定价策略

铁矿石定价问题对中国经济的平稳增长有明显影响。本文尝试性地建构了一个引入贸易中介的生产-贸易-消费的三分法结构分析框架,来探讨国际铁矿石定价问题及中国策略。基于国家和企业的双层面三环节结构分析发现,高寡占的生产者结构对应于高竞争性的贸易中介结构和消费者结构是国际铁矿定价格局的结构成因,也是中国制定相关铁矿石贸易和产业政策的重要现实约束。基于生存能力法的规模经济测度发现,铁矿石贸易的规模经济区间为5％以下;铁矿石消费环节的规模经济区间为10％以下,导致了多种形式的铁矿石贸易中介组织共存的特征。论文还从生产-贸易-消费的产业定价策略分析方法出发,提出了中国可资利用的铁矿石定价策略。