Estimating yield curves of the U.S. Treasury securities: An interpolation approach

Following the approach of interpolation, this paper proposes the multiple exponential decay model to fit yield curves for both the U.S. TIPS market and the conventional Treasury security market. Several estimation methods, including the unconstrained/constrained nonlinear minimization, quadratic programming, and the iterative linear least squares, are applied to estimate the unknown parameters according to different curve‐fitting purposes. Comparisons between the proposed model and the alternatives show that the multiple exponential decay successfully (1) adapts to a variety of shapes associated with yield curves, (2) (partially) keeps in line with the economic interpretations of Nelson–Siegel summarized by Diebold and Li ( 2006 ), and (3) dominates the competing models in curve‐fitting performance measured by mean fitted‐price errors over the sample period. In addition, the exact specification of a nonparametric interpolation model is pinned down by applying three statistical tools, which enable us to jointly take into account validity, optimality, and parsimoniousness of the proposed model.     

The Effects of Search-Related and Purchase-Related Mobile App Additions on Retailers’ Shareholder Wealth: The Roles of Firm Size,Product Category,and Customer Segment

Mobile channel additions have been shown to increase consumer-brand relationships, brand satisfaction towards and overall purchasing from a retailer, but what is less apparent is whether shareholders are fully rewarded for retailers’ mobile channel additions. Results from an event study on 115 announcements relating to mobile app additions of publicly traded U.S. retail firms between 2009 and 2016 indicate that the stock market responds generally positively to mobile app additions, but specifically to the two mobile app addition types. Stock market responses to search-related and purchase-related app additions are moderated by firm size, product category, and target customer age. For announcements of search-related apps, the market responds more positively to product retailers than to service retailers, and to small firms than large ones. For announcements of purchase-related apps, the market responds less positively to firms that target younger customers than firms who do not especially target them.     

目前“信心”尤其重要

有人说,现在房地产业已经到了冬天;有人说,房地产业就在寒冬里;还有人说,房地产的冬天即将过去.前一个时期舆论的热点话题如"拐点论"、"百日巨变论"、"断供说",简直撑破了眼球.     

以质量为本振兴企业

以质量为根本，全面提高企业管理水平，最终达到提高经济效益的目的。     

营销角度的特许经营及其竞争法上的思考

特许经营是一种新型的销售方式,作为企业分销系统的构成要素,能够起到降低风险,沟通生产与消费的作用。然而在实际经营过程中也会出现许多诸如指定购买与搭售、联合定价、独占经营等违反竞争法的问题。为适应不断变化的竞争形势,应从竞争法的层面上对其加以规制。     

审计风险模型探讨

在对审计风险的理解基本一致的前提下,通常认为存在着一个审计风险模型。教科书中的审计模型通常是这样的:审计风险=固有风险×控制风险×检查风险(或译“觉察风险”)。对于这个审计风险模型,曾经有过的争论集中于检查风险。作为学术争论的结果和表现形式,美国审计准则说明第39号《审计抽样》曾将检查风险分解为分析性检查风险和详细测试风险,英国审计实务委员会1987年推荐的审计风险模型则在检查风险后加上了“抽样风险”。尽管存在争议,但这一基本模型已经被美国的职业团体和学术界所认可。我国《独立审计具体准则第9号——内部控制与审计…     

市场制度与诚信

市场制度的基础条件之一是诚信,而市场制度又会对诚信产生一定的破坏作用.因此,抑制诚信缺失,除了需要市场经济自身不断的完善,还必须使用非市场的力量,并且采用灵活的政治和经济政策,以维持必要的社会诚信水平.     

利率市场化对商业银行的七大影响

所谓利率市场化是指中央银行放松对商业银行利率的直接控制，把利率的决定权交给市场，由市场资金供求状况决定市场利率．市场主体可以在市场利率的基础上，根据不同金融交易和各自的特点自由决定利率。利率市场化要求政府放弃对利率的直接行政干预．但并不排除国家的宏观间接调控．即中央银行通过制定和调整再贴现率、再贷款率及公开市场买卖有价证券等间接调控手段形成资金利率。     

中小企业板的推出对我国创业投资的影响

2004年5月，中小企业板在深交所获准设立，一时间，围绕中小企业板对创业投资运作影响的讨论空前热烈。笔者认为，要研究中小企业板对创业投资的影响，就必须从创业板和创业投资的内在机理出发，来研究中小企业板的制度安排是否能保证二者形成良性互动，关键的就是要研究中小企业板在制度上离一个成熟的创业板有多远。目前，学者和业内人士普遍对中小企业板的作用不甚乐观，而近一年来的实践也似乎验证了这一观点，因此，加强中小企业板的制度建设，使之尽快过渡为创业板，已经成了管理者的当务之急。     

继续高举张家港精神这面红旗

我们在采访中共江苏省委常委、苏州市委书记王珉时，他向我们介绍：苏州有三宝，张家港精神是第一宝，昆山之路是第二宝，亲商观念是第三宝，它集中反映了苏州和苏南地区现代化建设的宝贵经验，今天我们先推出两篇阐述张家港精神的文章，今后我们将陆续宣传苏州的其他两宝及苏南其他城乡的先进经验。