基于国防工业市场形成有效竞争的政策思考

竞争是市场经济得以维持和运转不可或缺的重要因素,是改进商品生产最有效的激励机制,没有竞争就没有市场经济。国防工业作为国家的战略产业,引入竞争已成为大势所趋。正是基于国防工业引入竞争的需要及我国国防工业市场的现状,本文研究了政府促成国防工业推行有效竞争应采取的政策     

两级供应链中的利益分配

供应链中的利益分配问题是理论界和企业界都十分关注的问题,它关系到供应链联盟的稳定性,关系到企业之间利润分配的公平性。本文介绍了合作对策的一些基本概念;Shapley值求解合作对策的基本原理和公式,以及应用Shapley值方法求解两级供应链中的利益分配问题。     

退货管理系统设计

对退货管理的研究发展历程、重要性及其在特定行业中的应用作了介绍,并给出了退货管理政策设计和网络设计的主要内容。最后分析了国内行业中的退货现状并给出建议。     

服务贸易发展的宏观政策战略转变分析

顺应全球产业结构的发展变化趋势,做好中国服务贸易发展的战略准备。作者提出了中国宏观经济发展思路和宏观经济发展政策的八个战略转变建议及具有针对性的有关中国服务贸易发展的五大产业政策转变对策。     

货物库存控制策略的评价方法研究

针对目前库存控制策略较多的情况,提出了一种策略评价方法,并给出了评价方法的评价过程。对该方法进行计算机编程仿真,能够获得最优库存控制策略。     

上市公司资本结构微观决定因素分析

我国上市公司资本结构的突出特点是偏好股权资本,内源融资和债权融资的比重偏低,这有悖于经典的资本结构理论。本文分析了决定上市公司资本结构的微观因素,并提出了优化上市公司资本结构的建议。     

How do economic policy uncertainty and geopolitical risk drive Bitcoin volatility?

We investigate how economic policy uncertainty (EPU) and geopolitical risks (GPR) impact Bitcoin volatility with respect to factors related to type and nationality of uncertainty, investigated period, relationship horizon and extreme conditions. Applying ARDL model and quantile regression for monthly data from August 2010 to September 2021, we reveal that June 2014 corresponds to a key date that marks a reversal in the investigated relationship. Furthermore, we show that the relationship between uncertainty and bitcoin volatility changes according to different factors. US uncertainty has short run effects on Bitcoin volatility, while China’s uncertainty has rather long run effects. Moreover, Bitcoin volatility responds in the same manner to US EPU and GPR, while, it responds differently to China's EPU and GPR. In extreme quantiles, we find that Bitcoin hedges against US EPU and GPR. Further, Bitcoin hedges against either individual or joint effects of US uncertainty, but not both.     

Does economic policy uncertainty drive the dynamic spillover among traditional currencies and cryptocurrencies? The role of the COVID-19 pandemic

The paper examines the dynamic spillover among traditional currencies and cryptocurrencies before and during the COVID-19 pandemic and investigates whether economic policy uncertainty (EPU) impacts this spillover. Based on the TVP-VAR approach, we find evidence of spillover effects among currencies, which increased widely during the pandemic. In addition, results suggest that almost all cryptocurrencies remain as “safe-haven” tools against market uncertainty during the COVID-19 period. Moreover, comparative analysis shows that the total connectedness for cryptocurrencies is lower than for traditional currencies during the crisis. Further analysis using quantile regression suggests that EPU exerts an impact on the total and the net spillovers with different degrees across currencies and this impact is affected by the health crisis. Our findings have important policy implications for policymakers, investors, and international traders.     

网络经济视角下的垄断与中国反垄断改革

网络经济条件下的垄断与传统工业经济中的垄断是不同的,在网络经济条件下,垄断结构更有利于技术进步,更能促进竞争,提高资源配置效率。当前中国反垄断的核心是保护竞争秩序、规制企业的垄断行为,激励企业提高自主创新能力,积极参与国际范围的垄断竞争。     

制约我国科技创新的环境因素研究

走科技创新之路是我国今后中长期的战略决策.然而,目前我国科技创新的硬环境和软环境基础相对都比较薄弱.基于全国科技工作者的调查数据,我们分析了目前影响我国科技工作创新的主要环境因素.结果表明:创新管理体制和运行机制、国家资金支持力度、组织制度和创新氛围以及我国传统文化因素等是制约科技创新的主要因素.在讨论的基础上提出了相应的对策.