论文检索系统及检索算法设计

针对文献检索这一问题,文章共设计了字母分类-相关度模型、ASCⅡ码分类-相关度模型两个模型。字母分类-相关度模型运用了字母分类法对所有的文献进行分类,并引入了相关度的概念,比较人性化的给出了不同相关度的检索结果,较为全面。ASCⅡ码分类-相关度模型运用了ASCⅡ分类法对文献进行了分类,将关键词库转化为一个阿拉伯数字集进行检索。     

增值税和营业税一体化改革下的转移支付方案选择——基于财政均等化视角

增值税转型实施后,增值税的扩围改革提上议事日程,这一改革将重构中央和地方的利益格局。在现行财政体制框架下,转移支付制度是弥合地方政府利益受损的有效途径,而不同的转移支付方式将产生不同的政策效应。本文以1994年分税制改革以来的财政数据为基础,应用SPSS的相关分析,从财政均等化的维度来考量各转移支付方式。从而为增值税和营业税一体化改革下的转移支付方案选择提供了政策依据,并提出了相关的建议。     

Analysis on Balance Gap between Saving and Credit Account in China

In China, the balance gap of credit and saving account emerged in 1995, and its amount enlarged since then. By the end of Dec. 2005, with 28.7 trillion RMB saving balance and 19.5 trillion RMB gross credit account balance, the gap between saving and credit account was as large as 9.2 trillion RMB, which indicated a 67.8% of credit/saving ratio. Some believed this phenomenon was resulted from on one hand, the rapid growth of saving account; and on the other hand, relatively slower expanding of credit account. Some believed cooling down cash demand was behind the gap, while others claimed the balance gap caused dead capital and inefficiency service of saving account. In fact, the balance gap between credit and saving account might not necessarily relate to dead bank capital. And the phenomenon itself could not indicate the down-tendency of finance power that underlay economy. Nevertheless, it was liquidity not the balance gap should be regarded an index of capital situation in financial organizations. Therefore the balance gap between saving account and credit account could not be viewed as criteria against liquidity position. Solution of this problem should lay in boosting financial innovation among commercial banks, expending capital market and encouraging or permitting commercial banks as well as state-owed funds to enter share market and so on.     

浅析武汉城市圈建设和产业结构优化

从经济发展的现状出发，通过对武汉城市圈产业结构升级的研究，用统计分析的方法分析了现阶段武汉城市圈的产业结构现状，揭示出城市圈产业结构中产业专门化率低、不具有比较优势、一产过高、三产过低、产业同构严重等问题，为制定城市圈产业结构的规划与优化产业结构政策提供了理论依据。     

基础设施与经济发展关系探析

基础设施与经济发展存在正相关关系。基础设施对经济发展的促进作用表现为规模效应、空间配置效应、结构效应与福利效应。改革开放以来，中国的基础设施建设有了较大发展，但仍然落后于经济发展的需要，加强中国基础设施建设是经济持续快速发展的重要保证。     

CB – Time Dependent Markov Model for Pricing Convertible Bonds

In this paper, we propose what we call the convertible bond (CB) – timedependent Markov model, which prices N given individual convertible bondssimultaneously, and apply it to Japanese convertible bond data. One of themain features of the model is that it makes full use of the correlationstructure of convertible bond prices. The empirical results show that themodel well describes individual prices in the market.     

Do Inflation‐Linked Bonds Still Diversify?

The diversifying power of inflation-linked (IL) bonds relative to traditional asset classes has changed significantly. In this paper, we study the dynamics of conditional volatilities and correlations for three asset classes, IL bonds, nominal bonds and equities, in the USA and Europe. Using a DCC-MVGARCH for the period 1997–2007, we highlight the change that took place in 2003. Although IL bonds once had definite diversification power, they are now highly correlated with nominal bonds and have reached similar volatility levels. As a result, the two asset classes are practically substitutable. This seems to be due to more stable inflation expectations and to a more liquid IL bond market. Although diversification was a valuable reason for introducing IL bonds in a global portfolio before 2003, this is no longer the case. Dynamic portfolio optimisation using our estimates of conditional correlations and volatilities clearly demonstrates that the optimal weight of IL bonds in a portfolio decreased sharply in 2003 in favour of nominal bonds and equities.     

Cyclical correlations, credit contagion, and portfolio losses

We model aggregate credit losses on large portfolios of financial positions contracted with firms subject to both cyclical default correlation and direct default contagion processes. Cyclical correlation is due to the dependence of firms on common economic factors. Contagion is associated with the local interaction of firms with their business partners. We provide an explicit normal approximation of the distribution of portfolio losses. We quantify the relation between the variability of global economic fundamentals, strength of local firm interaction, and the fluctuation of losses. We find that cyclical oscillations in fundamentals dominate average losses, while local interaction causes additional fluctuations of losses around their average. The strength of the contagion-induced loss variability depends on the complexity of the business partner network.     

基于灰色关联模糊模型的黑龙江省农产品流通企业发展水平评价

利用2005—2011年黑龙江省农产品流通企业发展水平指标的年度数据,利用灰色关联度分析法与模糊综合评判法相结合构建模型,以此作为定量分析黑龙江省农产品流通企业发展水平的基础。研究表明,黑龙江省农产品流通企业发展水平处于一般状态且存在发展结构不合理的现象。     

质量屋中相关关系确定的灰关联方法及应用

提出了一种基于灰色关联分析来研究质量屋中顾客需求与工程特性相关关系的方法。运用广义灰色关联分析中的绝对灰色关联分析进一步讨论,通过专家、顾客、厂商综合的打分方法来获得初始的顾客需求以及工程特性的重要度矩阵,然后通过相关的计算来得到绝对灰色关联度,最终得到需求-特性绝对灰色关联矩阵。再通过得到的矩阵进行优势分析,从而确定工程特性重要度的排序以及"瓶颈技术"。最后通过一个具体的实例来说明该方法的运用。