Risk management under extreme events

This article presents two applications of extreme value theory (EVT) to financial markets: computation of value at risk (VaR) and cross-section dependence of extreme returns (i.e., tail dependence). We use a sample comprised of the United States, Europe, Asia, and Latin America. Our main findings are the following. First, on average, EVT gives the most accurate estimate of VaR. Second, tail dependence of paired returns decreases substantially when both heteroscedasticity and serial correlation are filtered out by a multivariate GARCH model. Both findings are in agreement with previous research in this area for other financial markets.     

Value relevance of proportionate consolidation versus the equity method: Evidence from Hong Kong

Whether proportionate consolidation (PC) or the equity method (EM) provides more informative financial statements is a controversial issue. This study uses data from listed companies in Hong Kong to investigate the value relevance of the EM compared with PC during 2005–2008 when the local word-for-word equivalent HKAS 31 offered the same options. The results of this study provide evidence that PC does not offer higher value relevance than the EM. PC’s horizontal aggregation of a portion of the operations, assets and liabilities of the jointly controlled entities with those of the venturer is less informative to investors than the EM’s vertical aggregation.     

Non-coercive influence: Scale development and validation based on resource and relational paradigms

To overcome competition in an increasingly network dependent market, retailers are required to influence upstream channel partners while sustaining relationships. However, the contemporary supply chain literature has not sufficiently leveraged the resource and relational paradigms to examine influence. Grounded on resource dependency theory and commitment-trust theory paradigms, this study describes conceptualization and operationalization of a 12-item scale for measuring non-coercive influence on upstream channel partners in retail supply chain management (R-SCM) context. The study is based on responses from 547 retail professionals in India obtained over four successive surveys. Psychometric properties were assessed using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). The proposed scale demonstrates construct validity. Invariance-testing carried out over 4-levels of increasingly demanding equivalence confirmed cross-validation. Nomological validity of the scale was tested by evaluating association with suppliers’ intention to cooperate. The results indicate existence of three dimensions of non-coercive influence: collaborative intent, market intelligence dissemination, and operational support. Retailers can use the scale to assess their personnel's non-coercive influence behavior over suppliers.     

Optimizing the credit term decisions in supply chain finance

We study a credit term determination problem in the context of a supplier-buyer supply chain. The supplier's credit term decision is simultaneously made with its production and inventory decisions, and most importantly, it is impacted by the buyer's order quantity. We present a new game-theoretic framework to model this problem, which captures the interaction between the supplier's credit term decision and the buyer's order decision in a multi-period setting. An exact method based on nonlinear programming is implemented to obtain the optimal solutions. We apply our methodologies on a real world case. The computational results show that our approach significantly outperforms the heuristics with fixed credit terms, and either a short or a long credit term can be sub-optimal for the supplier in profitability. Our work offers the first data-driven model and solution approach that assists purchasing and supply managers to make optimal dynamic credit term decision in conjunction with production, ordering and inventory decisions in a game-theoretic setting.     

风险价值及压力测试在采购策略中的应用

首先分析了供应链采购风险管理的重要性,然后分别介绍了VaR和压力测试这两种风险测度方法,并在此基础上建立了采购风险度量模型,为制定科学的采购策略提供了量化的决策依据。     

知识产权法“利益平衡说”之反思： 自然法与功利主义之比较

“利益平衡说”被认为是知识产权法之基本原则或基本精神,旨在平衡权利人个人利益与社会公共利益之冲突,并以此解释知识产权法的制度构成。依自然法理论,知识产权之正当性因其自然获得性,相关权利与限制是确定权利的正当边界,维护以个人权利为基础之社会契约。功利主义理论则认为知识产权保护是实现社会效用之必要工具,经由排他性权利及其限制来达至社会效用最大化。无论限制或保护权利均有可能产生对权利或社会效用的正面或负面作用。由此,利益平衡的二元价值目标论值得商榷。知识产权法的根本问题是以个人权利为导向还是以社会效用为终极价值之选择问题。     

世界石油市场结构:演进、动因及影响——产油国油气政策调整对广义石油产业链价值分布的影响

本文从回顾世界石油市场结构演进历程入手,对产油国油气政策调整这一重要现象进行了分析。产油国油气政策的调整不仅直接改变了石油公司在资源环节的买方地位和所处的买方结构,同时也间接影响到其在油气生产阶段作为卖方所承担的成本以及原油市场的卖方结构。这样,通过对原油和成品油市场价格的连锁影响,在成品油价格变动特殊规律的约束下,油气资源政策的调整通过对石油市场结构产生影响,改变了石油广义产业链中资源环节和传统产业链环节的价值分布。     

世界经济失衡背景中的人民币汇率制度改革

人民币升值的真正原因在于,从对外经济往来层面上来看,美国在贸易逆差扩大背景下对中国愈演愈烈的人民币升值的"攻势";从国内宏观经济层面来看,"外汇占款"带来流动性过剩压力。宏观经济的客观因素以及中国政府的主观因素决定了人民币汇率升值过程只能是渐进的,而不是一步到位的,尽管渐进策略会进一步强化人民币升值的预期。对不同经济主体而言,人民币升值的利益效应不同,因此很难简单概括其总体效应。近期来看,人民币汇率升幅已经达到了一定的水平,与人民币升值相关的越来越强烈的负面效应以及金融突发事件效应,应该引起政府的密切关注。     

元代和买法律制度考论

和买,泛指官府向民间购买物品的行为。其核心便是“和”,即蕴含着自愿交易、买卖的官民双方地位平等、官府购买民间物品应以货币的形式支付对价等含义。为了规范和买行为和保障和买秩序,元继于宋,确立起了一整套包括均平摊派、时估、法定程序、和买钱货两清的支付原则、税课管理制度等在内的和买法律制度体系。然而,和买法律制度在“商品化/赋税化”“和/不和”的博弈中,最终滑向了政府主导、赋税化的境地,而随意的摊派与吏治的败坏在其中起到了催化剂的作用。和买法律制度只能在一定程度上起到减缓其由“和”向“不和”的赋税化性质蜕化的作用。     

生计资本对黄土丘陵区贫困人口生计活动的影响及评价*——以甘肃省榆中县为例

［目的］通过深入研究黄土丘陵区贫困人口生计资本对生计活动的影响,为解决农村贫困问题,提升农户生计资本存量、实现区域可持续生计发展提供科学依据。［方法］文章以甘肃省榆中县为例,基于对榆中县农户的调查数据,采用熵值法分析了东北部山区、中部川区和西南部山区贫困人口的生计资本状况和生计活动方式,并对其生计活动进行评价。［结果］从农户的生计资本组合来看,榆中县整体自然资本和人力资本相对物质资本、金融资本、社会资本3类资本较为富裕,尤其在西南部山区和东北部山区3类资本缺乏型农户比例较高。中部川区各乡镇人口的总体生计资本状况较好,总指数最高,而西南部山区次之、东北部山区最低,两者生计资本状况总体匮乏。农户的生计活动主要以种植、养殖和外出打工为主,生计活动多样性程度偏低; 中部川区人口的生计活动多样性指数最高,西南部山区次之、东北部山区最低,且整体受教育程度偏低,加之物质资本、金融资本、社会资本缺乏进一步限制了当地农户的生计多样性。［结论］（1）针对不同生计资本水平和生计活动多样性程度偏低的贫困地区,需要进一步发挥民族文化产业扶贫优势,开启地域产业扶贫新模式,打造地域无公害特色农业产业品牌,提高农户物质资本边际贡献; （2）发展小额信贷金融服务,改善农户金融资本存量,预防村际农户金融资本二元极化; （3）实施免费教育培训技能学习,打造教育培训脱贫示范村,提高人力资本存量,缓解贫困人口生计压力等提高经济发展水平的扶贫政策措施。