市场均衡就业区间与区间内两种特殊的就业失衡

现代市场经济运行中的社会均衡就业量并不只是一个孤立的点,而是一个区间。该区间具有较为复杂的性质与结构,其内部一般还存在两种特殊的、长期以来一直未引起人们注意的就业失衡－－区间内就业不足和区间内过量就业。从理论上阐明“市场均衡就业区间”的形成机理,并对其内部特殊的就业失衡进行必要的分析,将有助于我们深化对现代市场经济条件下社会就业规律的认识,同时,对在总量波动背景下进一步完善就业管理、实现充分就业,也将起到重要的理论指导作用。     

原油脱盐工艺技术探讨

分析了原油稳定系统发生盐堵的机理,并在总结"盐堵三要素"的基础上对比分析了常规防堵解堵工艺,对解决凝稳装置盐堵问题进行了探讨。并在此基础上介绍了雅克拉集气处理站(简称:雅站)凝析油水洗脱盐工艺技术,分析总结了其优缺点,具有较强的借鉴意义。     

安徽省农村剩余劳动力转移的外化阻滞研究

农村剩余劳动力有序地转移,是国民经济健康发展和社会稳定的基础,文章对现阶段安徽省农村劳动力转移特点进行分析的基础上,从城乡居民收入差距问题、农村劳动力进城住房问题、从业环境问题、工作和生活保障问题等方面,指出农村剩余劳动力实现"迁徙式"转移的外化阻滞,并针对问题,提出相应的对策措施。     

基于空时分组编码的MC-CDMA下行链路合并方案

基于空时分组编码的发射分集技术利用空间和时间分集 ,能有效抗多径 ,增强信道可靠性。将空时分组编码应用到MC -CDMA下行链路中 ,构建了一种新的多载波CDMA系统 (ST -MC -CD MA) ,通过在每个子载波信道中获得空间分集增益来提高系统性能。具体实现时 ,依据传统MC -CDMA信号合并方案 ,提出了ST -MC -CDMA空时译码后相应的四种合并方案。仿真结果验证了这 4种合并方案的优、缺点 ;并进一步证明 :在频率选择性瑞利衰落信道中 ,该系统比采用相同合并方案的传统MC -CDMA有明显的性能改善。     

Determinants of Foreign Ownership in Newly Privatized Companies in Transition Economies

We investigate determinants of foreign ownership in newly privatized firms. We analyze data on privatized Czech firms to address two related general questions. First, what characteristics distinguish transition firms that attract a foreign investor? Second, how do firm‐specific characteristics influence the size of the foreign equity stake? Our results suggest that foreign investors i) seek safe, profitable firms in which they can exert unchallenged influence on corporate governance and then ii) structure their equity stakes to mitigate agency costs and political risk.     

Bootstrapping cointegrating regressions

The paper investigates the usefulness of bootstrap methods for small sample inference in cointegrating regression models. It discusses the standard bootstrap, the recursive bootstrap, the moving block bootstrap and the stationary bootstrap methods. Some guidelines for bootstrap data generation and test statistics to consider are provided and some simulation evidence presented suggests that the bootstrap methods, when properly implemented, can provide significant improvement over asymptotic inference.     

降低环境风对火电厂空冷换热效率影响的措施

该文使用数值模拟方法研究了在夏季高温环境中降低环境风对空冷火电厂换热效率影响的几种方法。数值模拟给出了这些方法改善空冷换热效率的数值结果,特别指出增加位置合适的固壁挡风墙可以改变空冷火电厂周围高速气流的流向,降低环境风对空气冷凝器不利影响;而将这些固壁挡风墙换为阻力因子合适的多孔挡风墙,可以减少冷凝器底部风机的热回流,从而进一步提高空气冷凝器的换热效率。所得的定量结论可以在电厂改造和设计空冷系统时作为参考。     

Does Nuclear Uncertainty Threaten Financial Markets? The Attention Paid to North Korean Nuclear Threats and Its Impact on South Korea's Financial Markets

We explore how investor attention paid to dangerous nuclear tests influences financial market outcomes. To measure the attention paid to North Korean nuclear threats, we introduce a weekly Google search volume index for keywords on North Korean nuclear events. Using a time‐varying structural vector autoregression model with block exogeneity restrictions, we find that investor attention paid to nuclear threats has heterogeneous effects on South Korea's stock prices across industries and over time: attention on only the first nuclear test was negatively related to the stock price index, which vanished thereafter. Moreover, the investor attention paid to the nuclear risk reduced stock prices, especially in the banking industry, during the entire sample period.     

区块链技术对传统征信的变革研究

区块链技术具备的去中心化、共识决策、信息透明、不可篡改、无法抵赖、分布式数据库等特点,从根本上克服了目前基于观念、规制和经验的信用管理的理念和技术缺陷,这些特点恰恰是群体、社区和社会信用管理所需要的核心技术要素。区块链技术的应用对传统征信业务及其发展带来了理念、规程和技术等方面的变革,未来征信业将面临良好的发展前景。