An Application of the Dynamic Network DEA Model: The Case of Banks in Taiwan

ABSTRACT

In this study, we apply the dynamic network slack-based measure data envelopment analysis model (DNSBM) to measure the efficiency of Taiwanese banks during the period 2005–11. Using the network structure, we define intellectual capital creation capability as one of the production stages. In order to capture the dynamics of the transformation process, the nonperforming loans and loan loss reserves are defined as carryover items. This study offers sufficient information for managers to understand not only the overall performance of their banks but also the efficiency of each production stage and the dynamic changes of the overall and divisional efficiencies.     

Corporate Lobbying and Firm Performance

Corporate lobbying activities are designed to influence legislators, regulators and courts, presumably to encourage favorable policies and/or outcomes. In dollar terms, corporate lobbying expenditures are typically one or even two orders of magnitude larger than spending by Political Action Committees (PAC), and, unlike PAC donations, lobbying amounts are direct corporate expenditures. We use data made available by the Lobbying Disclosure Act of 1995 to examine this more pervasive form of corporate political activity. We find that, on average, lobbying is positively related to accounting and market measures of financial performance. These results are robust across a number of empirical specifications. We also report market performance evidence using a portfolio approach. We find that portfolios of firms with the highest lobbying intensities significantly outperform their benchmarks in the three years following portfolio formation.     

营运资本能够平滑公司资本性投资吗?——基于产权性质和金融发展的经验证据

在我国依靠投资推动经济增长的发展模式中,为了防止经济大起大落需要保持投资的稳定,笔者结合公司产权性质和金融发展考察了营运资本管理在保持公司资本性投资稳定中的作用。研究结果表明,营运资本能够平滑公司资本性投资,在融资约束更为严重的民营企业这种平滑效果更为显著;金融发展弱化了营运资本平滑公司资本性投资的效果,这种弱化作用在民营企业中更为显著。笔者的研究证实企业营运资本管理的必要性,为解开民营企业在融资难的现实中依然保持不断发展的困惑提供新的研究思路,为金融发展如何缓解企业融资约束问题提供微观层面的经验证据。     

Foreign versus domestic institutional investors in emerging markets: Who contributes more to firm-specific information flow?

Using a large sample of firms listed on the Korea Stock Exchange over 1998–2007, this study investigates whether and how trading by foreign and domestic institu...     

Do Sovereign Re‐Ratings Destabilize Equity Markets during Financial Crises? New Evidence from Higher Return Moments

This study investigates the effects of S&P's sovereign re‐ratings on the higher moments of equity market returns over recent financial crises. Using a set of intraday stock market index prices and sovereign credit ratings for a sample of 36 countries that experienced sovereign rating changes over the period from 1996 to 2013, we find that the higher moments of stock market returns are significantly more responsive to sovereign re‐ratings during financial crises, but the effects on stock markets are not the same across different financial crises. The effects during crises are, however, magnified for large downgrades and those that are associated with a loss of investment grade status. We find that there are asymmetric effects during financial crises in that downgrades are consistently more significant than upgrades in increasing realized volatility and realized kurtosis. Both upgrades and downgrades affect realized skewness in times of crises in the expected direction.     

More on Middlemen: Equilibrium Entry and Efficiency in Intermediated Markets

This paper generalizes Rubinstein and Wolinsky's (1987) model of middlemen (intermediation) by incorporating production and search costs, plus more general matching and bargaining. This allows us to study many new issues, including entry, efficiency, and dynamics. In the benchmark model, equilibrium exists uniquely and involves production and intermediation for some parameters but not others. Sometimes intermediation is essential: the market operates if and only if middlemen are active. If bargaining powers are set correctly equilibrium is efficient; if not there can be too much or too little economic activity. This is novel, compared to the original Rubinstein–Wolinsky model, where equilibrium is always efficient.     

基于银行流动性管理视角的宏观审慎与货币政策协调研究

本文从商业银行流动性管理视角出发,探究银行微观主体行为如何影响宏观审慎与货币政策的协调。我们借鉴净稳定资金比例的设计理念,将商业银行的流动性管理行为纳入传统理论模型,刻画出两种流动性管理行为对货币政策信贷传导渠道效率的潜在影响及传导路径。在此基础上,采用我国50家商业银行2012年第1季度—2018年第2季度面板数据进行实证检验。我们发现,银行为提升长期流动性水平而进行的优化信贷资产结构的行为,能够显著提高货币政策传导效率。但是,部分净稳定资金比例较低的股份制银行和城市商业银行调整非信贷资产结构的行为则有可能降低货币政策传导效率。因此,在执行既有流动性监管措施的同时,关注与引导银行资产结构调整方式,对增强宏观审慎与货币政策的协调大有裨益。     

试析城市发展的外部效应

城市发展是以城市经济发展为基础的包括城市经济发展在内的整个城市社会的进步，实际是一种有机体的经济活动，因此受到经济学“外部效应”普遍性的影响，对经济、文化、民主政治以及生态的协调发展产生积极的作用。因此实现城市科学、可持续发展，是现阶段城市建设的重要目标。     

我国公共财政建设面临的四大挑战与对策

我国公共财政建设取得丰硕成果,但也面临许多重大挑战.我们已经建立了比较完整的公共物品理论体系,但在现实中要清晰地界定公共物品的具体品目,准确划定财政保障范围,必须要通过一系列规章制度及其由制度形成的某种程序来完成.对城乡和谐发展与公共品配置的二元结构问题,必须要通过财政收入增量更多地向农民倾斜,给农民以平等之国民待遇等方式求得缓解.对显性债务安全性和隐性(还有)债务风险性问题,必须通过建立国家综合债务平衡表体系,研究制定适合我国的债务风险控制标准等方式解决.对职务消费支出日渐膨胀问题,需要通过提升改革过程的透明度,建立职务消费信息发布制度等措施来应对.     

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。