龙永煤田仁盘西矿区构造特征及找煤预测

文章通过对矿区构造特征分析,认为矿区中西部大面积分布泥盆统桃子坑组(D3tz)、下石炭统林地组(C1l)等老地层,呈上覆现象,其老地层下应赋存有二叠系煤系地层并蕴藏着丰富的煤炭资源,前景较好,可作为煤炭勘查的后备基地。     

基于SEM的农户绿色农业生产行为研究——来自新疆352个样本农户的证据

目的 农户作为生产经营的主体,农户的绿色生产行为决定着绿色农业的发展方向。此研究分析影响农户绿色农业生产意愿及行为的相关因素及路径。方法 文章基于新疆各地州的352份农户调研数据,运用结构方程模型实证分析各影响因素对农户绿色生产行为的影响程度以及各影响因素的形成机理。结果 （1）农户对绿色农业的认知、政策的引导、感知利益和绿色生产意愿与农户的绿色生产行为呈正比,感知成本则对农户绿色生产意愿和行为具有负向作用。（2）农户的绿色认知越清晰,绿色生产意愿越强烈,政府的政策补贴和推广力度越强,越能刺激农户进行绿色生产行为。（3）农户感知到花费的金钱、劳动和精力越多,则会削弱农户的绿色生产行为。结论 行为态度、主观规范、行为控制和感知利益对农户绿色生产行为均有正向作用,其中各项指标对农户绿色生产意愿和行为的影响程度各不相同,但相对而言,农户的行为态度和主观规范对绿色生产意愿的影响更为显著,感知利益对农户绿色农业生产行为影响更强。     

河南瑶沟金矿床形成机理

本文通过对瑶沟地区断裂构造的研究,定量地分析了成矿期构造应力场方向,结合区域上金矿床资料,确认该地区石英脉型金矿、破碎带蚀变岩型金矿以及萤石矿脉的形成及分布,是断裂构造多期活动的基础上,岩浆期后成矿热液分带性的结果。并建立了该地区金矿成矿模式。     

中国宏观经济形势与政策:2009—2010年

本文依据中国经济增长与价格形成理论模型以及CMAFM计量模型,分析与预测2009—2010年间中国经济在积极财政政策和适度宽松货币政策支持下的复苏过程。本文认为,中国需求管理应该继续采取扩张性政策取向,完成中国经济景气从萧条到繁荣的周期形态转换,并且与中国经济发展的高储蓄—高投资—高增长模式相适应,形成以促进国内投资需求为轴心的政策架构。     

企业研发网络的特征和结构模式分析

企业研发网络成为企业获取研发资源、缩短技术开发时间、减少研发投资费用与分散风险的有效组织形式。本文在界定企业研发网络概念内涵的基础上,分析了企业研发网络的开放性、多元化、广泛性、协同性、动态性、平等性等特征,构建了企业研发网络的基本结构框架图,进而分析了构成企业研发网络的各结点的功能。     

An agency model to explain trade credit policy and empirical evidence

This article explains trade credit policy based on the agency theory. According to this theory, we have developed an agency model based on the adverse selection and moral hazard phenomena arising from the relation between sellers and buyers. This model has been estimated by using panel data methodology applied to UK companies. Our findings strongly support the model proposed. We find that smaller firms, those with a smaller proportion of fixed assets, and those that are less profitable extend more trade credit, whereas firms with a high proportion of variable costs and high percentage of bad debts extend less.     

Flexible Fourier stationary test in purchasing power parity for African countries

This study applies stationary test with a Fourier function proposed by Enders and Lee (2004 Enders, W and Lee, J. 2004. Testing for a unit root with a nonlinear Fourier function, Tuscaloosa, AL, , USA: Working Paper, Department of Economics, Finance and Legal Studies, University of Alabama.  [Google Scholar], 2009 Enders, W and Lee, J. 2009. The flexible Fourier form and testing for unit roots: an example of the term structure of interest rates, Tuscaloosa, AL, , USA: Working Paper, Department of Economics, Finance and Legal Studies, University of Alabama.  [Google Scholar]) to test the validity of long run Purchasing Power Parity (PPP) to assess the nonstationary properties of the real exchange rate for 20 African countries. We find that our approximation has higher power to detect U shaped breaks and smooth breaks than linear method if the true data generating process of exchange rate is in fact a stationary nonlinear process. We examine the validity of PPP from the nonlinear point of view and provide robust evidence clearly indicate that PPP holds true for almost African countries. Our findings point out their exchange rate adjustment is mean reversion towards PPP equilibrium values in a nonlinear way.     

略论二元经济的实质与转化——基于信息和知识视角

二元经济是发展中国家在发展过程中最基本的经济特征.从信息和知识的角度看,任何经济系统、组织、个人都是信息和知识生产、收集、传递及利用的装置,二元经济形成的关键在于不同区域在信息和知识的生产、收集、传递及利用能力及效率上的差异.因此,二元经济如何发展和转换完全取决于该区域内与信息和知识利用相关能力的形成和发展.     

Trade Structure and Trade liberalization: The emerging pattern between the EU and Transition Economies

The purpose of this study is to find empirical evidence for the assumption that trade liberalization unlocks the potential of the Transition Economies (TEs) to achieve technological upgrading, productivity progress and catching-up (in terms of income). The study examines the trade structure now emerging between the European Union (EU) and the TEs in the light of two sets of differently liberalized trade items identified by the European Agreements. The aim is to determine whether trade liberalization has helped to supersede the structures – reflected mainly in the low quality of products – inherited by the TEs from the command economy. The empirical results are interpreted in the light of the Flam-Helpman quality-cycle model. We find evidence of an ongoing division of labor between high quality products (EU) and low quality products (TEs) according to a cycle. The first stage comprises the already well established dominance of quality advantage products by EU countries producing and exporting high-quality products, which crowd out the TEs' production of similar products. The second stage is the exploitation of cost-advantages by TEs in less liberalized trade, and there they appear to achieve better results. All these results may be taken as support for an active government in TEs.     

通胀的成本因素、传导机制及其区域差异——基于中国省际面板数据的实证研究

以1996～2010年我国企业生产要素和劳动力成本的面板数据,对国内成本推动型通胀的影响因素从传导机制、地区差异等方面进行了较为深入的探索性研究。研究发现,1996～2010年间劳动力工资和国际大宗商品价格是推动中国通胀的两大重要成本因素。其中,国际大宗商品价格主要通过企业生产要素价格推高我国通胀,而国际油价则通过企业劳动力成本推动国内通胀;另外中、西部地区通胀来自劳动力成本的压力较为明显,但东部地区压力相对较小;同时中部地区通胀能够有效地避免国际大宗商品价格的冲击,而东、西部地区通胀却遭受较为严重的大宗商品价格冲击。