中、美融资融券交易和监管规则比较分析

融资融券具有活跃证券市场、扩大市场规模、提高证券定价效率和投资者资金使用效率的作用。本文试以成熟市场的成功经验为借鉴,就国内交易所前期推出的相关办法可能存在的相关法律问题进行探讨,并给出相应的解决思路。     

基于产业结构调整的我国西部地区人力资源流动分析

根据我国西部地区产业结构调整现状,通过"错位幅度"分析西部地区产业结构调整与人力资源流动关系,结合对人力资源流动与产业结构调整的相关理论,进行成因分析,提出促进人力资源流动与产业结构调整适应的对策。     

浅析融资融券业务给我国证券业带来的机遇与挑战

融资融券是建立在对未来市场投资预期基础上的一种衍生金融工具,经过了四年时间的酝酿才浮出水面。融资融券业务的推出对我国证券业的发展无疑会产生较大的影响,对券商、投资者、金融市场来说,机遇与挑战并存。当务之急是要采取各种有效措施加强融资融券业务的风险防范,以促进融资融券业务的健康发展。     

农业资本利润率变动趋势及其成因的实证研究

本文在对农业资本利润率变动趋势分析的基础上,运用资本利润率变动相关理论,构建影响农业资本利润率变动的MLR模型,基于1978—2007年时间序列数据统计检验结果表明：在较长时期内农村经济增长率、资本劳动比、农户数、农业产出品价格水平与农业资本利润率之间具有稳定的协整关系,农业经济增长、资本劳动比、农业产出品价格水平与资本利润率具有显著的正向关系,而农户数与资本利润率则呈现负相关关系,并通过格兰杰因果检验。     

从系统的角度看期货市场的风险控制

期货市场的各种风险控制措施是市场稳定运作,有效发挥经济功能的重要保障。但是这些控制措施在不同程度上都对市场运作产生了影响,不同措施之同也存在着或促进或制约的关系。因此,只有从系统的观点出发,研究各项措施间的相互关系和系统的演化规律,才能帮助市场监管者更有效的管理和控制期货市场的风险。     

公务员加薪“养廉”效应的模型分析

本文建立一个静态均衡模型,运用边际和弹性的方法对公务员加薪的"养廉"效应进行了理论分析,设计了"高薪养廉"运用的条件和范围,用实例对之进行经验验证,并提出了政策建议。     

嘉兴市第三方物流业的现状、问题及对策研究

随着WTO的加入,商品交易量增加及专业化分工的进一步深化,作为"第三利润源"的物流业显得越来越重要,并受到了高度重视.该文通过对嘉兴企业特点、第三方物流业现状的分析,提出发展嘉兴第三方物流业的意义及一些建议.     

邮电通信业市场势力测度及对行业发展影响的实证分析

测度市场势力是监控垄断行业滥用市场势力和反垄断的前提,价格—边际成本差额(即勒纳指数)测度法是广泛认可的市场势力测度方法,但由于边际成本的不可获得性,实际上难以直接应用。本文以广受关注的邮电通信业为例解决了这一难题:基于行业数据特征,通过适当变换替代了经济学难以度量的边际成本和实物量,得到了一种能直接计算勒纳指数的方法,该方法适合于观察中长期市场势力,计量分析中明显优于使用价格—平均成本替代价格—边际成本的功效。基于测度结果,实证了市场势力、技术进步(考虑动态效率)、市场结构变化对行业发展的影响。研究发现,技术进步对行业增长有大的贡献,但市场势力产生了负效应,电信业市场结构调整没有达到业务分拆的初衷。上述研究方法和结论对政府制定垄断行业价格成本监审办法和反垄断立法有借鉴意义。     

Multi‐objective crop planning using pareto‐based evolutionary algorithms

The scarcity of water is a growing problem worldwide. The increasing use of water in industrial, urban, and agricultural applications together with the continuous increase in population require the proposal of efficient solutions. In the case of agricultural use, it is necessary to not only maximize the economic benefits, but also to establish optimal water‐saving crop planning, especially for water‐deficient regions. Due to the multi‐objective nature of these problems, the decision‐making process is complex. Fortunately, the increase in computational resources available in recent years has allowed researchers to develop efficient computational algorithms to deal with real and complex optimization problems, including agricultural ones. In particular, multi‐objective evolutionary algorithms (MOEAs) are known for their ability to optimize several objective functions simultaneously to provide a representative set of the Pareto front, which is a set of problem solutions representing a trade‐off between the best values of each of the objectives. This article proposes solving a multi‐objective crop planning problem using two Pareto‐based MOEAs. Results obtained when solving this problem using real data collected from a large number of greenhouses in Spain to show the advantages of using these multi‐objective approaches.     

The relationship between the ecologisation of farms and total factor productivity: A continuous treatment analysis

The European Green Deal aims to mitigate the environmental impact of food production while improving the income of primary producers and strengthening the EU's competitiveness. We examine how the degree of ecologisation affects farms' total factor productivity (TFP). Our analysis combines a random-parameter stochastic production frontier model with a composite indicator and a dose–response function approach. Results show a monotonically decreasing relationship between ecologisation and expected TFP level. On average, a one-step increase in the degree of ecologisation results in a 12% decrease in TFP. However, the results indicate a non-linear relationship. Three regions of the dose–response function can be distinguished; associated with high, medium and low degrees of ecologisation. In a region with a low degree of ecologisation, farms can increase the degree of ecologisation without reducing TFP. Both efficiency and technological differences contribute to these differences, but the main reason is technological. With increasing ecologisation, farm technology becomes more ‘land using’. Therefore, farms can increase their TFP and degree of ecologisation simultaneously by using land-saving technologies or through sustainable intensification.