Random walk and efficiency tests in the Asia-Pacific foreign exchange markets: Evidence from the post-Asian currency crisis data

This paper empirically tests the random walk and efficiency hypothesis for 12 Asia-Pacific foreign exchange markets. The hypothesis is tested using individual as well as panel unit root tests and two variance-ratio tests. The study covers the high (daily) and medium (weekly) frequency post-Asian crisis spot exchange rate data from January 1998 to July 2007. The inferential outcomes do not differ substantially between the unit root tests and the variance-ratio tests when using daily data but differ significantly when using weekly data. With the daily data, both types of unit root tests identify unit root components for all the series and two variance-ratio tests provide the evidence of martingale behavior for majority of the exchange rates tested. With the weekly data, panel unit root tests identify unit root component for the exchange rates and, the unit root tests on a single series basis identify unit root component for 10 foreign exchange markets. However, the variance-ratio tests reject the martingale null for the majority of the exchange rates when using weekly data.     

近代中国海外游记研究综述

从上个世纪八十年代以来,随着改革开放和"文化热"的兴起,学界开始重视对近代海外游记,包括海外旅行的研究,从资料整理到论著、论文,面世了很多新成果,再现了近代中国历史变化的另一个侧面,推动了中国近代历史研究的深入.然而,其研究也有不尽如人意的方面,如大多的研究仅仅停留在客观叙述之上,缺少理性分析;资料整理亦不够全面.所以,学界当加强这项课题的研究.     

美中贸易收支与人民币汇率关系:实证分析

针对美中贸易收支与人民币汇率问题,经研究发现,汇率变动对贸易收支的影响是值得怀疑的,仅仅依靠人民币汇率变动是无法解决美中贸易逆差问题的。1994—2002年年度数据实证显示,美中贸易收支与人民币汇率(名义或实际汇率)之间没有稳定的关系;1998—2003年月度数据计量表明,美中贸易收支与人民币汇率之间没有长期稳定的协整关系。并且,依据美中两国月度统计数据计量的结论是相一致的。因此,“人民币升值论”或许更多的是基于政治而非经济因素,人民币汇率浮动并不能解决美中贸易逆差问题。     

Structural current accounts in the European Union countries: cross-sectional exploration

This paper investigates structural determinants of the current account balance and assesses whether the current accounts in the European Union countries were consistent with the calculated structural current accounts between 1995 and 2017. We estimate current account regressions using cross-sectional data for 94 countries in 2008–2016 and confirm the main findings with panel data estimates. We document that the current account depends on the real exchange rate in a nonlinear way. The real exchange rate affects the current account at low income levels, but it ceases to be important at high income levels. Based on structural current account estimates for the European Union countries, we document that after the 2008 crisis current accounts adjusted towards structural current accounts in deficit countries, but persisted above structural current accounts in surplus countries.     

影响人民币汇率政策选择的因素--基于决策理论的实证分析

基于决策理论和实证分析方法,得出影响我国政府选择汇率政策的因素是:当前的宏观经济状况对人民币汇率政策的选择的确产生了重要的影响,而外汇储备的高速增长和经常账户余额的状况是2005年汇率政策改革的主要影响因素。因此,当前汇率政策改革是宏观经济形势影响政府效用的结果。     

透视美元贬值

美元霸权是综合国力的体现,不仅有经济、金融实力在里面,还有军事实力在里面。美元不会直线贬值下去,会出现反弹——下跌——再反弹——再下跌行情。关键时刻,美国政府完全会使用其军事实力来维持美元货币币值稳定。对于美国来说,解决赤字问题的正确方法应该主要是提高美国的利率和税收,减少消费和增加储蓄。     

The Real Equilibrium South African Rand/US Dollar Exchange Rate: A Comparison of Alternative Measures

This article indicates how different measures of the real exchange rate, i.e., the exchange rate adapted for cost inflation, price inflation and labour costs, influence the equilibrium view and misalignment of the South African rand/US dollar exchange rate. The approach followed is based on the behavioural equilibrium exchange rate approach by Clark and MacDonald (1998), where the exchange rate is influenced by a number of fundamental and transitory factors. The real equilibrium exchange is estimated by using a single equation regression and a number of key explanatory variables. To determine the long-run relationship a Vector Error Correction Mechanism is used.     

人民币汇率改革的回顾与前瞻

汇率改革的重大意义是使人民币成功退出固定汇率制,并且形成了一整套向市场化转轨的理论、制度和政策框架。汇率改革的进程将进一步实现汇率市场化,逐步加大汇率波动的弹性。随着汇率改革的深化,必须努力完成经济增长路径的转换,完善金融市场的功能,提高企业和商业银行应对外汇风险的能力。     

人民币实际汇率波动对中美贸易收支的影响——基于1990—2009年时间序列分析

基于协整理论、误差修正模型和格兰杰因果检验并根据中国和美国1990-2009年的季度数据,分析人民币实际汇率变动对中美贸易收支的影响.结果表明:影响中美贸易收支的主要因素包括美国的实际GDP、中国的实际GDP和人民币实际汇率,且三者的影响力次第减弱,中美贸易也存在明显的J曲线效应.因此,改善中美贸易失衡应扩大中国内需、调整业口结构和改革人民币汇率制度.     

人民币可能发展成为世界货币之一

本提出人民币可能发展成为世界货币之一的论点。为了说明这一论点，本分析了人民币发展成为世界货币必须具备的条件，如发展成世界货币可能带来的好处和问题。章与几种不同的看法商榷之后，指出对人民币可能发展成为世界货币的问题，应持支持的态度并在条件成熟后采取措施加以促进。