高管薪酬粘性、风险承担与企业投资效率——管理者权力与融资约束的调节作用

本文选取2010―2019年中国A股上市公司数据,实证分析了高管薪酬粘性对企业投资效率的影响及其作用机制。研究表明:(1)高管薪酬粘性对企业投资效率具有负向影响,会加剧企业过度投资,由此加大非效率投资及降低投资效率。(2)高管薪酬粘性对企业投资效率的负向影响仅对“奖优-低惩劣”薪酬契约有效。相对于非国有、高估值与制造业企业,高管薪酬粘性对国有、低估值与非制造业企业投资效率的负向影响更为显著。(3)管理者权力的提高会加剧高管薪酬粘性对企业投资效率的负向影响,加剧高管权力寻租引发的薪酬补偿效应,由此稀释薪酬奖惩对业绩变动的敏感度。融资约束程度的提高会减弱高管薪酬粘性对企业投资效率的负向影响,这种负向影响主要针对投资不足企业,对过度投资企业不显著。(4)风险承担在高管薪酬粘性与企业投资效率的关系中承担着中介作用,高管薪酬粘性通过影响企业风险承担来影响企业投资效率,“高管薪酬粘性-风险承担-企业投资效率”的传导渠道有效。     

Review: Chinese public administration and finance—a call for a new theory,research and dialogue

In implementing its national strategy to achieve global leadership, China needs a new public administration theory that integrates political administration, economic management and social regulation. Even so, China has already started to promote its brand of political and economic development abroad. Therefore new comparative research and dialogue is called to explore the universality of Chinese and Western public administration ideas.     

Purchasing power parity in ASEAN-5 countries: revisit with cross-sectional dependence and structural breaks

This paper re-examines the purchasing power parity (PPP) hypothesis for a panel of ASEAN-5 countries. The panel unit root and cointegration tests, which incorporate cross-sectional dependence and multiple structural breaks, are innovatively used for testing the PPP hypothesis. We could not find evidence that supports the existence of a long-run equilibrium between the relative price ratio and the nominal exchange rate for the whole period. Nevertheless, there is evidence of a cointegrating relationship for the post-crisis period. Our finding implies that a flexible exchange rate regime is suitable for the individual ASEAN countries.     

大气激光通信中压缩数字脉冲间隔调制技术

为了提高大气光通信信息传输的高效性和可靠性,提出一种压缩数字脉冲间隔调制（CDPIM）技术。该技术对相邻4位信息码组分别经PPM编码后,把编码脉冲之间多余的空闲时隙用分段压缩码进行替换来进行编码。描述了CDPIM的符号结构,运用Matlab对发射功率、频带利用率、信道容量占用率、传输误包率等的仿真结果表明：在相同位分辨率4时,CDPIM的发射功率比FDPIM的发射功率节约23%,CDPIM的频带利用率比DPIM的频带利用率提高72%,CDPIM的传输容量比OOK的传输容量提高67%。在相同信噪比2时,CDPIM的误包率比DPIM的误包率提高60%,而且CDPIM调制技术能对接收的错误码组进行有效的自我纠错。     

Power perceptions and modes of complaining in higher education

This study examines the relationship between student perceptions of different types of educator power and different modes of student complaining behaviour in the case of university education. A large sample of marketing students in the business school responded to the study from a state university in Northeastern United States. Factor analysis and canonical correlation analysis are used to explore the relationships between five bases of power perceptions (referent, expert, reward, legitimate, and punishment) and four modes of complaining behaviour (voice, negative word of mouth, third party, and exit). The results indicate that students engage in different modes of complaining as they perceive different types of educator power. The predominant complaining mode is found to be voice under referent or expert power, third party under legitimate power, and exit under reward or punishment power. Our findings offer important implications for student satisfaction, retention, and completion rates in higher education.     

纵向市场结构与企业创新——一个文献综述

创新是企业乃至整个经济发展的源动力,受到了社会各界的广泛关注。其中,企业创新的影响因素是学术界研究的焦点问题。“熊彼特假说”提出之后,大量的研究讨论了横向市场结构对企业创新的影响。然而近年来,随着部分行业上下游企业间市场势力的变化,学者们开始将目光转向纵向市场结构,特别是随着部分行业中买方势力的不断增强,买方势力对上游企业创新的影响受到了学者们的重点关注。本文梳理了国内外有关纵向市场结构对企业创新影响的研究成果,以期为国内相关领域的理论研究和政策实践提供一些借鉴。     

谈旅游服务理念在旅游企业中的确立

当今旅游企业面临国内、国外双重竞争压力,从现实来看确立旅游服务理念已经成为旅游企业的一致选择,其实确立旅游服务理念是很多客观因素促成的必然结果,这些因素既有宏观的又有微观的,首先确立旅游服务理念的客观必然性和它增强企业核心竞争力的重要作用,然后确定服务理念的内容,使旅游企业健康地发展。     

发电企业集团投资并购问题分析

在不断蔓延的“电荒”和国家电力公司实行拆分改革,引入竞争机制的刺激下,自2003年以来,我国电力建设投资开始高速增长。持续升温的电力投资,在暂时解决电力不足的短期问题的同时,对电力工业的合理布局和未来经济持续健康发展将造成后患。面对如火如荼的投资并购热潮,应科学地制定电力投资规划,保持合理地电力增长速度从而满足国民经济发展的需要。     

LT码新型度分布及其在电力线通信中的应用

Luby变换(Luby Transform,LT)码作为信道编码应用于电力线通信(Power Line Communication,PLC),可实现电信号的可靠传输。度分布对LT码编译码性能的影响至关重要。为了得到更优的度分布,首先调整二进制指数分布(Binary Exponential Distribution,BED)中的度数比例,获得一种译码性能更优的改进的二进制指数分布(Improved BED,IBED)。然后,根据IBED在冗余度较小时译码成功率高,而冗余度增大后鲁棒孤子分布(Robust Soliton Distribution,RSD)的译码性能表现更佳的特点,通过求和归一化的方式将IBED与RSD两种度分布的优势进行有机结合,提出一种新型二进制鲁棒孤子分布(Binary RSD,BRSD)。仿真结果表明,与其他方法及传统的RSD相比,采用新度分布进行LT编码,可明显降低译码开销,并节约编译码耗时。将新型度分布应用于基于LT码的PLC系统中,能有效地抑制PLC信道中各种噪声对电信号的干扰,并提高通信效率。     

Periodic strategies in optimal execution with multiplicative price impact

We study the optimal execution problem with multiplicative price impact in algorithmic trading, when an agent holds an initial position of shares of a financial asset. The interselling decision times are modeled by the arrival times of a Poisson process. The criterion to be optimized consists in maximizing the expected net present value of the gains of the agent, and it is proved that an optimal strategy has a barrier form, depending only on the number of shares left and the level of the asset price.