多模攻击弹药引信抗干扰设计理论研究

为了增强多模攻击弹药引信的抗干扰能力,提出了基于状态转移法的引信抗干扰设计理论,利用该理论分析了多模攻击弹药引信的逻辑结构,量化各个部分对引信抗干扰性能的影响,为引信的抗干扰设计提供重要参考,最后采用该理论对某手工布设弹药引信进行了分析,分析结果可以指出引信抗干扰设计的重点和有效途径,对设计工作具有重要的指导意义。     

本钢实业发展有限责任公司项目投资决策分析——基于博弈论视角

企业关于某个项目的投资与否,轻则影响企业的经营效益,重则关乎企业的兴衰存亡。本文基于博弈论的视角,分析了基础产业的行业特点,并根据市场情况,以单个博弈主体和多个博弈主体为前提分别对本钢实业发展有限责任公司关于镁粉项目的投资决策进行分析,分析结果表明,两种情况都可以进行投资。     

高校图书馆服务于远程教育

本文针对高校图书馆在远程教育中的优势,分析了远程教育的特点以及远程教育模式应用在高校图书馆的必要性。并提出了关于高校图书馆服务于远程教育的几点建议。     

Corporate tax avoidance and corporate financialization: The moderating effect of managerial myopia

The purpose of this paper is to investigate whether managers with tax avoidance motivation also engage in corporate financialization. Using a large sample of Chinese A-share non-financial listed firms from 2009 to 2020, the empirical results show that there is a positive association between corporate tax avoidance and corporate financialization. Moreover, the positive effect of tax avoidance on corporate financialization mainly manifests in firms with myopic managers. Our results are robust to alternative measures of both tax avoidance and managerial myopia. Two-stage least squares (2SLS) regression and propensity score matching (PSM) confirm our results and mitigate any potential endogeneity issues. Overall, we show that the agency costs between shareholders and managers indeed play a critical role between tax avoidance and corporate financialization.     

Strategic stocking for new products to signal quality information

This paper investigates the signaling role of stocking for new experience products in a two-period setting. The seller privately observes the product quality information, which cannot be resolved until the second selling period. We show that the stocking plays a pivotal role in signaling the quality information, and the equilibrium strategy depends highly on ordering cost and the consumer prior belief about the seller type. If the seller is unable to dynamically decide the retail prices, separating equilibrium arises more frequently and such a fixed pricing may result in a win-win situation for both seller and consumers.     

科研诚信“自律”与“他律”协同建设的内在逻辑及现实路径研究

我国在40余年的科研诚信建设过程中,“自律”与“他律”建设均存在不足,两者没有形成有效协同。为加强科研诚信建设,更好地发挥科研诚信系统的整体协同效应,需要运用协同学理论,对我国科研诚信建设系统进行分析,探求系统内部协同机理,促使科研诚信“他律”和“自律”在合作过程中产生协同效应,并通过优化科研诚信建设子系统各要素,加强系统与环境之间的合作,发挥科研诚信建设系统的最优协同效应,进而构建我国科研诚信建设全方位协同治理体系。     

CEO overconfidence and the level of short-selling activity

Review of Quantitative Finance and Accounting - This study examines the impact of CEO overconfidence on the level of short-selling activity, as proxied by the short interest ratio. This research...     

The Impacts of Economic Freedom and Institutional Quality on Migration from African Countries

The previous empirical literature suggests that socio-economic conditions and demographic pressures are triggering factors of migration from Africa. We propose that economic freedom and institutional quality indicators of African countries are also important determinants of out-migration from Africa. Hence, we investigate the effect of economic freedom and institutional quality on migration flow from 44 African countries to major migration destination countries. Aggregate indicators are derived for the quality of institutions and economic freedom using principal component analysis. Controlling for source and destination countries' income levels, population size, cultural, historical and physical distance, our findings provide evidence that migration flow from Africa is significantly determined by the institutional quality and economic freedom indicators in African countries. Our results are strongly robust to different econometric techniques used to control for sample selection bias, zero-valued observations and endogeneity concern. Hence, improving institutional quality and maintaining economic freedom in African countries matters significantly to control out-migration from Africa.     

Time-consistent reinsurance and investment strategies for an AAI under smooth ambiguity utility

This paper investigates time-consistent reinsurance(excess-of-loss, proportional) and investment strategies for an ambiguity averse insurer(abbr. AAI). The AAI is ambiguous towards the insurance and financial markets. In the AAI's attitude, the intensity of the insurance claims' number and the market price of risk of a stock can not be estimated accurately. This formulation of ambiguity is similar to the uncertainty of different equivalent probability measures. The AAI can purchase excess-of-loss or proportional reinsurance to hedge the insurance risk and invest in a financial market with cash and an ambiguous stock. We investigate the optimization goal under smooth ambiguity given in Klibanoff, P., Marinacci, M., & Mukerji, S. [(2005). A smooth model of decision making under ambiguity. Econometrica 73, 1849–1892], which aims to search the optimal strategies under average case. The utility function does not satisfy the Bellman's principle and we employ the extended HJB equation proposed in Björk, T. & Murgoci, A. [(2014). A theory of Markovian time-inconsistent stochastic control in discrete time. Finance and Stochastics 18(3), 545–592] to solve this problem. In the end of this paper, we derive the equilibrium reinsurance and investment strategies under smooth ambiguity and present the sensitivity analysis to show the AAI's economic behaviors.     

新时代背景下《电子商务物流》课程教学探析

针对新时代背景下对复合型电子商务物流人才的需求与供给之间的不平衡矛盾,基于电子商务专业教学实践,分析了《电子商务物流》课程的教学现状,提出了对《电子商务物流》课程重“新”定位的建议,并在对课程内容优化与重构的基础上,提出改善教学现状与提升教学效果的具体方法,期望能够对《电子商务物流》课程教学实践具有借鉴作用。