Decision-making in incomplete markets with ambiguity—a case study of a gas field acquisition

We apply utility indifference pricing to solve a contingent claim problem, valuing a connected pair of gas fields where the underlying process is not standard Geometric Brownian Motion and the assumption of complete markets is not fulfilled. First, empirical data are often characterized by time-varying volatility and fat tails; therefore, we use Gaussian generalized autoregressive score (GAS) and GARCH models, extending them to Student’s t-GARCH and t-GAS. Second, an important risk (reservoir size) is not hedgeable. As a result, markets are incomplete which makes preference free pricing impossible and thus standard option pricing methodology inapplicable. Therefore, we parametrize the investor’s risk preference and use utility indifference pricing techniques. We use Least Squares Monte Carlo simulations as a dimension reduction technique in solving the resulting stochastic dynamic programming problems. Moreover, an investor often only has an approximate idea of the true probabilistic model underlying variables, making model ambiguity a relevant problem. We show empirically how model ambiguity affects project values, and importantly, how option values change as model ambiguity gets resolved in later phases of the projects. We show that traditional valuation approaches will consistently underestimate the value of project flexibility and in general lead to overly conservative investment decisions in the presence of time-dependent stochastic structures.     

基于钻石模型的滨海新区制造业产业集群发展研究

天津滨海新区升格为国家级综合改革试验区的战略目标,是把以滨海新区为增长极的京津冀打造为环渤海乃至中国北方经济增长的发动机和最具国际竞争力的都市圈。本文借鉴迈克尔·波特的国家竞争优势钻石模型,构建一个地区制造业升级的竞争模型,并借助于这一模型对滨海新区制造业产业集群竞争力进行分析,从而就提升其产业集群竞争力进行了对策探析。     

'More is not necessarily better': the relationship between the quantity and quality of training efforts

International comparisons indicate that, on average, Belgian companies spend less on training than their French, German and Dutch counterparts. Encouraging companies to commit to training has consequently been an important policy goal over the last few years. One notable aspect of the policy to encourage training efforts by companies is that the effort is always represented in terms of the resources invested (input), not in terms of the learning achieved (output) or the quality of training programmes (throughput). Government policy is aimed at increasing the level of investment in company training. One of the questions we wish to investigate is whether this input-oriented approach to the training issue is actually effective. Whether companies will succeed in raising human capital to ever-increasing levels may depend not only (and maybe not even chiefly) on the extent of financial investment in training. The investment level does not necessarily determine the quality of the training processes developed by companies. Therefore, this paper focuses on the following research questions: (1) to what extent do companies monitor the systematic development of sufficiently effective training processes? In other words, is qualitative under-investment an issue, alongside financial under-investment? (2) Is the level of financial investment in company training correlated to the quality of training processes? The empirical data confirm that a kind of 'qualitative' under-investment can be reported and that the relationship between the level of investment in training and the quality of the training programmes is weak.     

企业价值评估贴现模型的比较分析

贴现模型是企业价值评估中应用较为普遍的模型,但在我国实践中使用贴现模型存在很多问题。本文利用自由现金流量贴现法、调整现值法、经济利润贴现法三种常用的方法,探讨贴现模型不同参数指标的原理、使用原则、使用条件及在我国实践中的适应性,希望讨论能够为企业价值评估实务提供指导和帮助。     

Impact of Financial Development on the Environmental Quality in Iran

In recent decades, undesirable environmental changes, such as global warming and greenhouse gases emission, have raised worldwide concerns. In order to achieve higher growth rate, environmental problems emerged from economic activities have turned into a controversial issue. The aim of this study is to investigate the effect of financial development on environmental quality in Iran. For this purpose, the statistical data over the period from 1970 to 2011 were used. Also by using the Auto Regression Model Distributed Lag （ARDL）, short-term and long-term relationships among the variables of model were estimated and analyzed. The results show that financial development accelerates the degradation of the environment; however, the increase in trade openness reduces the damage to environment in Iran. Error correction coefficient shows that in each period, 53% of imbalances would be justified and will approach their long-run procedure. Structural stability tests show that the estimated coefficients were stable over the period.     

全球价值链与国内价值链——基于投入产出表的新方法

价值链作为组织和协调经济活动的微观机制,已使经济全球化和增长模式发生了深刻的变化。本文利用来自投入产出表的新方法,测度了广东省和江苏省全球价值链和国内价值链的水平。结果表明,粤苏两省切入全球价值链的倾向高于切入国内价值链的倾向,而对其它省份关联效应较大的行业基本上是中间品行业,且具有自然资源密集的特征。全球价值链与国内价值链之间的互动关系,则关系到我国产业升级的前景和区域经济协调发展的基础。     

交互式多媒体教学：电子白板与多媒体相结合

多媒体教学已是现代教育技术的必备手段之一，然而随着实践的深入，它的缺点越发明显，如学生不易抓住重点、师生交互性不够等。电子白板与多媒体教学相结合可以达到，交互学习的效果，可以构建新型教学模式，充分体现板书的优点，提高学习效率、改善学习效果。     

中国的增加值率为什么会出现下降？——基于非竞争型投入产出框架的视角

中国经济在快速增长同时，新增价值在产出中比例不断下降。本文在非竞争型投入产出框架下，分别运用结构分解方法和迪氏指数分解方法，从不同的角度对中国的增加值率1987—2007年下降的现象进行研究。结果表明，在研究期间中国增加值率从1987年的0．480下降到2007年的0．323，下降幅度达到32．63％。从行业结构角度来看，中国增加值率的下降与我国产业结构的两次变迁有关，是工业化进程中不可避免的结果；从最终需求角度分析，初次投入结构变动以及生产过程中进口中间品比例增加是导致增加值率下降的主要原因。最后，本文还结合分析结果对提高中国经济增长质量提供了相关建议。     

“逆全球化”探源:基于双边投资协定深度决定因素的研究

近年来全球化进程受阻,“逆全球化”根源有待进一步探讨。本文首次利用贸发会议“IIA绘图”数据,构建涵盖101项关键条款的双边投资协定(BITs)深度评价体系,测算了全球2539份BITs深度数据。通过理论和实证研究发现,东道国区位优势和母国所有权优势是决定BITs深度的重要因素。具体来看,东道国劳动力和自然资源禀赋的区位优势对BITs深度具有显著抑制作用,母国资本、技术和制度质量的所有权优势对BITs深度具有显著促进作用,同时母国资本和技术水平对BITs深度的影响存在异质性。进一步研究表明,2008年金融危机后,东道国劳动力资源对BITs深度的抑制作用增强,母国资本和技术水平的促进作用减弱,导致世界经济呈现“逆全球化”趋势,提高母国制度质量是实现经济全球化发展的有效途径。     

"省直管县"财政体制改革模式探讨——以湖南为例

"省直管县"财政体制改革是地方政府从政府规模、层级及财政关系等层面实行的一次深远变革,也是地方政府突破中央权力设置的制度壁垒而获得创新效率的一个难得契机,湖南省应从实际出发探索建立地方新型财政管理模式和地方公共产品供应模式.