基于多级库存的电网运维物资安全库存优化配置研究

针对电力公司运维物资多级库存体系与安全库存配置现状,结合安全库存聚集效应,文章提出了周转库安全库存差异聚集策略。在综合考虑库存持有成本与普通、紧急配送成本的基础上,构建了安全库存优化配置模型。通过两类电网运维物资实际数据的分析,验证了差异聚集策略下成本低于全部聚集以及全部分散策略,可以为电力公司物资集约化、差异化、精益化管理以及仓库定额配置提供依据。     

年轻高管与企业股价崩盘风险：来自“代理冲突观”的证据*

在企业纷纷实施高管年轻化战略的背景下,本文从股价崩盘风险的视角分析和检验了年轻高管风险偏好的经济后果及其作用机理。本文基于“个体认知观”和“代理冲突观”展开理论推演,采用中国沪深A股非金融上市公司的数据,检验发现,年轻高管会显著加剧企业未来的股价崩盘风险,且这种影响主要存在于民营企业,在国有企业并不显著。进一步针对具体作用机制的检验发现,年轻高管在投资决策中选择了更多能迅速提升个人收益的风险性投资项目,但在不能迅速提升个人收益的风险性投资项目上与年长高管没有显著差异。同时,年轻高管对股价崩盘风险的加剧效应仅仅存在于高管在上市公司领取薪酬的样本企业,且更高的独立董事比例能显著抑制年轻高管的股价崩盘风险加剧效应。这表明,年轻高管个体认知层面的风险偏好被其追求个人私利最大化的代理冲突所扭曲,进而为年轻高管风险偏好的“代理冲突观”提供了实证证据。     

我国国有企业民营化发行后绩效变化的影响因素分析

笔者研究了我国国有企业民营化发行前后的绩效分布和变化特征,并重点从宏观层面和微观层面分析了绩效变化的影响因素。研究表明,经济增长率、资本市场成熟度、机构投资者、集权式管理、股权再融资和独立审计选择能够促进民营化发行后绩效水平的改善,市场竞争度、大股东控制度、中央控制、股权制衡度和关联交易对民营化发行后的绩效具有显著负相关影响,而行业管制、投资者保护度、地区市场化和对外担保对民营化发行后绩效的影响效应不明显。可见,影响国有企业民营化发行后绩效变化的原因来自宏观和微观两个方面,忽视任何方面都不能全面地解释民营化绩效的变化。     

Trade uncertainties and the hedging abilities of Bitcoin

In this paper, we first estimate the monthly realised correlation, based on daily data, between stock returns of the United States (US) and Bitcoin returns. Then, we relate the realised correlation over the period October 2011 to May 2019 with a news-based measure of the growth of trade uncertainty of the US. Our results show that the realised correlation is negatively impacted by increases in trade uncertainty, which continues to hold under alternative robustness checks, suggesting that Bitcoin can act as a hedge relative to the conventional stock market in the wake of heightened trade policy-related uncertainties, and provide diversification benefits for investors.     

The effects of haze pollution on stock performances: evidence from China

Haze pollution has become the most important environmental issue in China in recent years. Using the data of PM_2.5 concentration and stocks of listed companies located in Beijing between 2010 and 2014, this article investigates the effects of haze pollution on stock performances. Empirical results indicate that haze pollution has significant negative effects on stock returns and significant positive effects on stock volatilities, through the channel of investors’ mood. Furthermore, the effects of haze pollution on stock returns emerge gradually and the effects of haze pollution on stock volatilities weaken gradually over time during a trading day.     

Stock Repurchase and the Role of Signaling： A Comparative Analysis between U.S. and China

This paper compares different methods used for stock repurchase and examines the role of signaling in the U.S. and China＇s capital markets. We find that the ways to buyback stocks are very different in the two countries. Most U.S. stocks are repurchased through open market and the signals sent to the market through open market repurchase are getting weaker. Even though stock repurchases are at their early stage in the Chinese stock market and the dominated way to buyback is through a negotiated repurchase agreement for non-floating shares, the power of signaling seems much stronger. Examining stock prices pre- and post-repurchase, we find that stock repurchase records an average abnormal return of 3.42% on the announcement date and 3.24% on the date of actual renurchase.     

Does the Company Lawyer Have Your Back? A Brief Look at the Need for Personal Private Liability Insurance

There are four traditional uses of private personal liability insurance dating from the 1970s to the present (Hayes 1979; Sommers 2005) which pertain either to individuals or corporations. There is insurance to cover damage to rental cars, umbrella insurance to cover any injury to a guest at one’s home, insurance bought by corporations to cover potential corporate responsibility for actions of company representatives and insurance including misadventures with financial information and morally hazardous behavior as well as corporate required actions which are later deemed to be wrong or inappropriate. Employees need to find out if the employee manual provides for coverage for legal liabilities resulting out of performing job responsibilities. Due to a need to reduce company costs, many companies are reducing or eliminating coverage for employees for many types of actions. Private personal liability insurance gives you the peace of mind to know what you are covered for and for how long. Employee rights versus corporate budgets are at the core of this discussion.     

公共财政框架下政府审计的拓展与政府会计的完善

政府审计是加强预算管理的一个重要工具。中国在建立公共财政的过程中，进行了一系列预算管理制度的改革，政府审计必须适应现行的预算管理制度，在审计内容上、方法上积极拓展。本文主要论述了当前公共财政框架下政府审计需要拓展的方面。另外，为保证预算管理制度改革顺利实施，政府会计等其他制度建设也需相应追行改革和完善。     

经理人股票期权的会计计价

股票期权会计计价是股票期权制度的核心。股票期权费用化已为学界所接受,争论的焦点集中在方法的选择上。当前,应尽快明确计价方法,因为股票期权会计计价不仅是用来反映和核算股票期权经济行为的工具,更是调节各方利益的手段。因此,笔者建议采用"股利贴现模型"和"库藏股法"来分析不同计价方法对股权稀释的影响。     

股票基金红利再投资比例的实证研究

开放式基金"红利再投资比例"指的是基金分红时,投资者以红利再投资方式进行的收益分配占总收益分配的比例。红利再投资比例的研究可以为基金制定正确的分红策略提供依据。文章通过对股票型开放式基金红利再投资比例的研究,发现基金份额、基金存续时间与基金红利再投资比例正相关。这说明基金持有人对基金管理人越有信心,基金持有人投资基金的时间越长,则选择红利再投资的可能性就越大。