香港和内地证券市场的动态竞争关系研究——基于A+H交叉上市公司的实证分析

交叉上市引起不同证券市场对有限投资者和资金资源的竞争。文章在阐述证券市场竞争的Lotka-Volterra模型基础上,通过2006-2010年38家A+H交叉上市企业的日交易数据实证分析了香港和内地证券市场之间的动态竞争过程。结果表明,两市场之间的动态竞争关系从交叉上市初期的捕食—诱饵关系逐步演化为目前的竞争互惠关系,且这种动态演化过程与企业交叉上市顺序没有显著的相关性。这说明内地证券市场正在不断完善,鼓励企业境外上市和A股回归将有利于内地证券市场的发展,而且互惠合作应是未来证券市场竞争的发展趋势。     

山西省科技发展能力分析——基于系统动力学

以山西省科技发展能力为研究对象,使用Vensim PLE软件建立了科技发展能力的系统动力学模型,并对山西科技发展能力进行了仿真、预测和政策模拟,明确了影响山西省科技发展能力的两个重要因素——R&D经费投入占GDP的比例和科技人员数。最后提出政策建议。     

Forest management under fire risk when forest carbon sequestration has value

We develop a multiple forest use model to determine the optimal harvest date for a forest stand producing both timber and carbon benefits under a risk of fire. An empirical application is provided for a forest owner producing maritime pine in Southwest of France. Our results indicate that a higher risk of fire will decrease the optimal rotation period. On the contrary, higher carbon prices increase the optimal harvesting age. To investigate the contradictory effects of fire risk and carbon price on forest rotation, we identify the set of carbon prices and fire risks that lead to a given rotation age. We also show that forest owner's willingness to pay for a risk reduction can be substantial (37.33 euros by ha and by year to reduce the annual fire risk from 1.26% to 0.07%).     

非营利组织信息披露与社会捐赠:一个博弈分析

对非营利组织来说,提高自身持续发展能力为社会提供公益服务是其目标之所在。实现这一目标,非营利组织必须建立一个固定的社会捐赠群体来获取稳定的资金来源。通过一个完全信息动态博弈模型的分析可知,非营利组织在管理和运作中只有充分披露所接收的社会捐赠款的使用效率和效果,才能满足捐赠人的信息需求并使其享受到捐赠行为所带来的效用,进而采取进一步捐赠行动,非营利组织也由此提高其社会公信力,并能持续地获得资金来源。     

我国上市公司再融资与财务业绩动态变化研究

本文对上市公司再融资的3种形式及对财务业绩在时间上的变化进行了分析，提出了无论配股、增发新股、发行可转换债3种方式对财务指标的影响是下滑的，而对企业的核心业务是增强的，但不显著。发行可转债优于配股和增发。     

Energy Prices and Carbon Taxes under Uncertainty about Global Warming

This paper extends the strategic interactions between producers of fossil fuels concerned about their profits and a taxing government concerned about the consumers’ welfare for uncertainty: global warming follows an Itô -process. Stochasticity requires to differentiate between reversible and irreversible emissions in contrast to the deterministic version. The unconstrained (= reversible) case allows for a closed form solution but not the more realistic and constrained case. Nevertheless interesting analytical properties (e.g. about when to stop emissions, implicit conservation due to monopolistic supply) are derived and complemented by a numerical example.     

Unemployment disparities and regional wage flexibility: comparing EU members and EU-accession countries

This paper provides empirical evidence on regional labor market flexibility in Europe and, in particular, in the EU-accession countries in Central and Eastern Europe. Whereas substantial regional disparities in unemployment are found for pre-accession EU member countries as well as for accession countries, an empirical analysis taking account of spatial effects shows that regional wage flexibility is significantly higher for accession countries. Moreover, unemployment disparities are found to be less persistent in the accession countries.

人物命运遭际的哲理思索

石杰的长篇小说《狗鱼》,以外科医生林雨在反右派运动中遭遇为主线,反映了一个县级医院里各种不同人物的利害角逐,活画岀人性的高尚与卑污,展示了时势乖误中的复杂矛盾及其延续性的后果。对此,小说作者以睿智的哲理加以分析,显示了动人心魄的艺术感染力。     

谈“等效翻译”

当代西方翻译理论流派林立,观点纷呈,其中不乏关于翻译标准的讨论。西方有关等值翻译的研究也有几大流派,奈达的动态等值论是所有流派中最有影响的。英汉两种语言及其文化背景存在巨大差异,形式等值在中英互译中有其局限性,而等效翻译在翻译实践中有其必要性与可行性。     

救助投机、挤入效应与国有企业预算约束硬化

国有银行的＂救助投机＂行为促进了国有企业的＂预算软约束＂和不良贷款的积累。在政府、银行与国有企业之间的长期动态博弈中,由于预算硬约束企业的出现给国有银行提供了改善贷款资产组合的机会,提高了银行在与政府的救助投机博弈中的议价能力,要求政府给予更多的流动性注入,这会产生银行贷款资产中预算硬约束企业贷款占比不断增加的挤入效应。这种挤入效应累积到一定程度,政府的救助将变得非社会最优的,进而政府将停止救助,国有企业的预算约束也随之硬化。