Equilibrium capital taxation in open economies under commitment

This paper analyzes equilibrium capital taxation in open economies with strategic interaction in a neo-classical growth model. Under perfect commitment, I show that non-cooperative capital taxes are zero in the long run for a large open economy, thereby generalizing the result previously established only for the special cases of a closed and a small open economy. This does not represent a race to the bottom, though, since the result is independent of the degree of capital mobility, the number of countries, or a country׳s size relative to the rest of the world. Moreover, when countries cooperate, they still set capital taxes to zero in the long run. These outcomes are robust to different equilibrium specifications, the inclusion of endogenous government spending, and heterogeneous agents and non-linear labor income taxation. Governments find it optimal to implement the efficient capital allocation in the long run, both in a closed and an open economy; this trumps incentives to tax foreigners’ domestic capital holdings by raising capital taxes and attracting capital from abroad by lowering capital taxes.     

Inflation and output in New Keynesian models with a transient interest rate peg

A familiar result in the canonical Dynamic New Keynesian (DNK) model is that policymakers constrained by the zero bound can improve outcomes by promising to keep rates low after the zero bound is not binding. We examine a general class of interest rate pegs in a variety of DNK models. Standard versions of the model produce counterintuitive reversals where the effect of the interest rate peg can switch from highly expansionary to highly contractionary for modest changes in the length of the interest rate peg. This unusual behavior does not arise in sticky information models of the Phillips curve.     

高维稀疏数据对象—属性的非关联子空间分析

针对高维稀疏数据对象-属性子空间的优化问题,本文从稀疏性的角度提出了RUSAUBSC算法,通过剔除非关联子空间实现子空间的优化,并通过实验研究证明了该算法的有效性。     

数据要素与研发决策对工业全要素生产率的影响——来自2010—2019年中国工业的经验证据

在高质量发展阶段,工业全要素生产率不仅取决于数据要素的市场化配置,同时在很大程度上还受到研发决策影响。利用2010—2019年中国工业面板数据,估计数据要素与研发决策对工业全要素生产率的影响效应。结果表明,数据要素赋能资本、劳动要素后的要素深度融合,对工业全要素生产率具有显著改善作用;与劳动密集型工业相比,数据要素对资本密集型工业全要素生产率的改善作用更加显著。将研发决策纳入后发现,探索型研发决策对资本密集型工业全要素生产率提升具有显著促进作用,而囿于高风险的利用型研发决策则对工业全要素生产率的改善作用不显著。进一步研究发现,探索型研发决策能够促进数据要素赋能传统要素,二者有效融合能够显著提高工业全要素生产率。     

企业数据赋能实现路径研究——一个资源编排案例

在大数据时代,数据赋能价值逐渐受到实践界与理论界的广泛关注。现有研究主要基于赋能和能力视角,探讨如何获取数据赋能价值,未充分考虑数据独特的资源属性。基于案例企业数据赋能实践,从资源视角出发,采用探索性单案例研究方法,利用资源编排模型打开数据赋能实现路径的“黑箱”。结果发现：第一,基于资源编排模型,企业可通过数据组合、数据与其它企业资源捆绑、数据利用与价值创造3个过程实现数据赋能。第二,处于不同业务发展阶段,企业数据赋能实现形式包括支持型数据赋能、驱动型数据赋能和使能型数据赋能,其取决于数据信息与数字技术发挥的作用及价值。结论既可为数据赋能实现路径研究提供新的视角,对企业数据赋能价值获取也具有一定的指导意义。     

智能制造核心企业如何牵头组建创新联合体——来自华为智能汽车业务的探索性案例研究

结合华为智能汽车业务探索性案例研究,提出智能制造核心企业牵头组建创新联合体的过程机理及路径范式,揭示智能制造核心企业在创新联合体形成中的角色和作用机制,即发挥数据赋能的驱动作用,从而实现创新联合体跨界战略网络协同、跨界组织网络协同、跨界资源网络协同、跨界制度网络协同,形成协同演化动态能力,实现产品功能、生产制造及商业模式颠覆式创新。凝练出智能制造核心企业牵头组建创新联合体路径范式：“智能制造核心企业—传统龙头集群企业—超级消费者”交互赋能。结论可拓展数字创新理论及价值共创理论,为传统产学研合作创新联盟数字化转型提供理论指导,为智能汽车领域创新联合体建设及颠覆式创新提供实践指导。     

Dynamic impact of negative public sentiment on agricultural product prices during COVID-19

The COVID-19 pandemic has had a significantly negative impact on public sentiment, which has resulted in panic and some irrational buying behavior, which in turn has had a complex impact on agricultural product prices. This study quantified online negative sentiment using micro-blog text mining and a time-varying parameter vector autoregressive model (TVP-VAR) to empirically analyze the dynamic impact of negative public emotions on agricultural product prices during the COVID-19 pandemic in China. It was found that the online negative sentiment impacted agricultural products prices during COVID-19 and had significant time-varying, lag, and life cycle characteristics, with the responses being most significant in the spread and recession periods. Differences were found in the price responses for different agricultural products and in different risk areas. The online negative sentiment was found to have the greatest impact on vegetable prices, with livestock products and vegetable prices being mainly positively impacted, fruit prices being mainly negatively impacted, and aquatic product prices being negatively impacted in the early stage and positively impacted in the middle and late stages. The online negative sentiment had the greatest impact on medium-risk area agricultural product prices, followed by low-risk areas, with the lowest impact found on the high-risk area agricultural product prices. Three policy suggestions for epidemic monitoring, public opinion guidance and control, and the timely release of agricultural product information are given based on the results.     

微机异步串行通信技术及应用

本文介绍微机异步串行通信,对微机的内部电路不作改动,同时保证不丢失数据,可靠地实现数据交换。     

Do WTO members have more liberal trade policy?

This paper uses 68 measures of trade policy and liberalization to ask if membership in the World Trade Organization (WTO) and its predecessor the General Agreement on Tariffs and Trade (GATT) is associated with more liberal trade policy. Almost no measures of trade policy are significantly correlated with GATT/WTO membership. Trade liberalizations, when they occur, usually lag GATT entry by many years, and the GATT/WTO often admits countries that are closed and remain closed for years. The exception to the rule is that WTO members tend to have slightly more freedom as judged by the Heritage Foundation's index.     

数据库技术的发展述评

回顾了数据库技术的发展 ,指出数据库技术目前的研究状态 ,并在此基础上 ,分析了数据库应用所面临的挑战 ,指出数据库技术的研究热点。