鄂北桐柏—大别山区建立池园农业模式的基础及效益分析

文章分析鄂北桐柏－大别山区建立池园农业模式的自然和社会基础,研究这一新型农业模式的微观机理,探讨鄂北山区建立池园农业成功的途径;在此基础上,指出该区域发展农业必须以生态节制行为为前提,充分利用农业资源,改变传统农业观念,走可持续农业之路;最后运用经济手段对区域建立池园农业取得的效益进行预测。     

A grey decision and prediction model for investment in the core competitiveness of product development

Because enterprises do not disclose their internal specific cost information to the public and, moreover, every firm has its own product character and financial constitutions, it is difficult to offer fixed guidelines for investment decisions. Thus, an enterprise may be uncertain when required to choose the most promising set of possible investments.The goal of this research is to use a grey relation analysis and analytic hierarchy process (AHP) to probe the core product development and competitiveness of an enterprise from limited data and, furthermore, by constructing the grey model, GM(1,1), to validate the feasibility of this assessment of the core competitiveness and investment strategy. In this study, a precision mechanical manufacturer is taken as an example, and the forecast estimate from this method is compared to those of a linear regression and the actual values to demonstrate the feasibility of applying this methodology to investment decision making, hence, demonstrating the value of this research.     

地方政府支出,RBC模型与中国的区域经济周期——以天津市为例

In this paper, the actual economy in Tianjin Municipal city are simulated with RBC model through introducing local government expenditure. From the works review and stylized facts, it is easy to find that government expenditure will have important influence on economy. Then this paper provides new evidence to support this judgment by DCC theory. After concluding the stylized facts of Tianjin city, a regional RBC model with local government expenditure is developed. Next, this paper starts to solve this RBC model, get log-linearization of the solution and estimate all parameters. A program on Matlab is made to simulate actual economy in Tianjin city with this RBC model. The result is the RBC model with local government expenditure has better performance than that without local government expenditure. Therefore, it will be necessary to consider local government expenditure, if regional economy is researched.     

Economist and Editor George S. Tolley: A special issue in his honor

The purpose of this special issue of Resource and Energy Economics is to honor economist and founding Co-editor of this journal, George S. Tolley. This introduction to this tribute offers a perspective on his career and an overview of the articles written for this issue.     

Regulatory disclosure via the internet: does it make financial markets more efficient?

In line with the regulatory framework of the majority of the European capital markets, the Portuguese Securities Market Commission imposes to security issuers the disclosure of any event that could influence share prices in a material way. These events are classified as “Price Sensitive Events”. Through the analysis of market reaction to this kind of event, this study attempts to assess the appropriateness of this disclosure rule. Additionally, since the regulator defines its website as the appropriate manner to disseminate this publishable information through the market, we will also be providing evidence about the efficiency of this system.      

“入世”后县域农业经济的发展与应对策略

我国加入WTO在即,对外开放市场、大幅度降低关税等一系列承诺的实现,必然会对我国农业和农村经济造成严重而又深刻的影响,在此背景下,本文认为,我国农业发展观必须由传统农业观向现代农业观转变;农业发展战略必须从过去的以追求数量为主的“增产”战略尽快向以追求质量和效益为主的”增收“战略转移,为此,本文提出县域农业发展迎接”入世“挑战的七项应对策略。     

Does it matter (for equilibrium determinacy) what price index the central bank targets?

What inflation rate should the central bank target? We address determinacy issues related to this question in a two-sector model in which prices can differ in equilibrium. We assume that the degree of nominal price stickiness can vary across the sectors and that labor is immobile. The contribution of this paper is to demonstrate that a modified Taylor Principle holds in this environment. If the central bank elects to target sector one, and if it responds with a coefficient greater than unity to price movements in this sector, then this policy rule will ensure determinacy across all sectors. The results of this paper have at least two implications. First, the equilibrium-determinacy criterion does not imply a preference to any particular measure of inflation. Second, since the Taylor Principle applies at the sectoral level, there is no need for a Taylor Principle at the aggregate level.     

Green fiscal reform and employment: A survey

In the European debate an increase in employment is generally regarded as an important extra-dividend-in addition to improved environmental quality-from environmental taxes. The scope of this paper is to evaluate, going through the existing empirical literature, if-and to what degree-this result could be achieved through a green fiscal reform. A further goal of this paper is to assess which taxes are more efficient in terms of employment-creation when they are utilized for recycling back to the economy the revenue flowing from environmental taxes. This kind of exercise is largely different from the theoretical analysis of the double dividend issue. A large quantity of literature has grown during the recent years according to this approach, but this version of the double dividend theory will be disregarded in this paper.     

民办高校经管类专业人才培养模式研究

以西安翻译学院的经管类专业为例,对其“专业＋英语＋技能”的人才培养模式进行了研究,认为这种模式,在强调技能训练的同时,更凸显外语训练的重要性,这符合该校的办学特色,也适应当前中国经济发展的要求。最后,提出了一些完善该种模式的策略建议。     

风电产业对张家口经济发展的影响

风电产业在张家口的快速发展必然要促进其经济结构的调整。文章针对这一情况,就如何调整战略以跟上时代的发展步伐,提出了建议。     

一种需求不确定下的多目标供应链设计研究

供应链结构是影响供应链运作的重要因素之一。在充分考虑需求不确定的情形下,基于对供应链多决策目标的分析,提出了运用主分量方法编制供应链多决策目标综合指数,进行供应链设计决策的方法,并通过算例说明了这种方法的特点以及与传统方法的区别。     

Credit risk – Return puzzle: Evidence from India

Although asset pricing theories predict a positive relation between risk and returns, empirical findings on credit risk-return relationship are mixed. And, observed negative relation between the two in this regard is referred to as credit risk-return puzzle. Using credit rating as a measure of credit risk, we have investigated into the existence of this puzzle in India during July 2011 to March 2019. We have used information for the companies listed on the National Stock Exchange for this purpose. Our results validate the presence of this puzzle in the Indian stock market. Moreover, credit risk is observed to be a systematic risk, which has not been captured in the traditional asset pricing models. We have also observed partial evidence favoring both behavioural and rational pricing explanations—the two widely acknowledged explanations in the literature behind this puzzle. On our further query in this connection, we have not seen any significant change in the puzzle due to the recent enactment of the Insolvency and Bankruptcy Code.     

Public versus private insurance system with (and without) transaction costs: optimal segmentation policy of an informed monopolist

Computer-mediated transactions allow insurance companies to customize their contracts, while transaction costs limit this tendency toward customization. To capture this phenomenon, we develop a complete-information framework in which it is costly to design a new market segment when the segmentation policy (number and design of segments) is endogenously chosen. Both the case of a private and a public insurer are considered. Without transaction costs, these two insurance systems are equivalent in terms of social welfare and participation. With transaction costs, this equivalence is no longer present, and the analysis of this difference is the subject of this article.     

Escalation of commitment to fossil fuels

The use of fossil fuels has been a great boon to human civilization. However, given the issue of climate change, it has become clear that this is a time-limited strategy and that we will at some point need to severely curtail, and perhaps ultimately eliminate, this strategy of meeting our energy needs. Given this long-term perspective, the authors argue that continued public investment in fossil fuel industries and infrastructures reflects escalation of commitment, continued investment in a failing strategy. In this context, this paper reviews the research on escalation of commitment and factors that encourage de-escalation, highlighting strategies that citizens can use to encourage politicians and public administrators to protect long-term civic well-being by shifting investments away from fossil fuel industries.     

中国技术进步贡献率的度量与分解

本文在分析索洛余值法缺陷的基础上,以新增长理论为理论背景,结合中国经济发展的现实,将产业结构变动、资本空间集聚、人力资本积累等因素引入技术进步贡献率的计量模型,使技术进步贡献率的度量更接近真实的技术进步情况;进而利用新的技术进步贡献率计量方法重新测算了1987—2003年间中国的技术进步状况,发现中国技术进步贡献率已开始出现稳步增长的趋势。     

On the Limits of the Post-Industrial Society Structural Change and Service Sector Employment in Spain

The purpose of this paper is to examine the growth and the structure of employment in the service sector in the Spanish Economy from 1958 to 1989 and to draw comparisons with the trends exhibited by other European countries. In contrast to the explanation offered by the theory of stages, which assumes that growth in services is associated with the pattern of final demand, this research argues that, since the middle of the 1970s, the growth of market service employment is due to an increase in intermediate demand of services. In order to demonstrate this, an intersectoral analysis is applied to input output data which was homogenised for this research. This methodological approach enables employment in the service sector to be connected to the other sectors. Rejecting the idea that services are replacing manufacturing as the new engine of growth, the results show an increased dependence on market services by industrial production. The final part of the paper presents explanations for this trend.     

Post-Keynesianism as political economy: a methodological discussion ∗

The purpose of this article is to develop a means of classifying post-Keynesianism with reference to methodology. I have attempted to achieve this by distinguishing between different types of realism. When we integrate this with the important notion of vision, best viewed as a means of understanding rather than appraising alternative perspectives, a more robust characterization of post-Keynesianism becomes possible.     

非物质文化遗产是重要的区域旅游资源

非物质文化遗产的开发、利用和保护,引起人们越来越多的关注,但非物质文化遗产的内涵到底应怎样理解,在对非物质文化遗产的开发、利用和保护时应当遵循什么基本原则,它与区域旅游资源的内在联系具体表现在哪些层面,对这些问题的探索和思考便是本文试图着力解决的问题。     

Competition,variety and technological evolution: A replicator dynamics model

In this paper a model of technological evolution based on replicator dynamics is developed. Such a model is based on a twin characteristics representation of product technology and on a population approach. The model can give a general representation of technological evolution, but this paper concentrates on the relationship between variety and competition. Variety is considered to be a very important variable influencing economic development. By means of the characteristics and population approach adopted in this paper it is possible to distinguish between inter-and intra-technology competition. In this paper it is demonstrated that the variety of the system can only increase if intra-technology competition is more intense than inter-technology competition. Intuitively this implies that new technologies will only be able to emerge if incumbent technologies experience the competition coming from the new ones to be weaker than their own internal competition.     

千万吨级矿井集群生态圈构建及管理优化研究

基于国内大型矿业集团千万吨矿井发展实践,结合集群理论界定了千万吨级矿井集群内涵,并凝炼其典型特征。针对矿井集群发展现状,以干系人识别为切入点,建立矿井集群内外部网络关系。运用社会网络分析法对矿井集群网络特征进行测度和主体角色定义,在此基础上,构建矿井集群生态圈。从管理理念、管理方式两个角度进行生态圈管理优化,旨在为推动煤炭企业产业升级、带动供给侧结构性改革提供决策参考。