高职学生英语应用能力考试通过率初探

文章从学生因素和教学因素两个方面的原因进行了分析,提出了提高学生英语应用能力（B级）考试通过率的应对措施。     

人民币升值对我国进出口企业的影响分析

汇率改革两年多来,我国人民币一直处于升值通道中,人民币升值对我国经济的各个方面带来了不同的影响,对于以国际业务为主的进出口企业更是影响深刻。文章在总结汇率改革历程的基础上,分析了人民币升值对我国进出口企业的影响。     

基于计算机仿真的仓库与停车场布局方案评价

首先明确了系统的研究对象及设施布局方案,提出了评价指标体系。通过基于布局方案的系统状态变化流程图的分析和状态变化间隔时间的确定,建立了仓库与停车场作业系统仿真模型。运用离散系统仿真技术中事件调度法提出了实现系统状态变化的基本步骤,并通过状态变化间隔时间设置、布局方案设置、仿真演示三个模块完成了仿真模型的程序实现。最后运用仿真模型得出了布局方案中装卸月台、车辆、停车场等相关指标,并分析评价了方案的优劣性。     

基于蚁群算法的路径规划问题研究

基于VRP问题及其解法,提出一种用蚁群算法解决邮车路径规划问题的新方法。该方法首先用网络图理论建立邮递路径收益损耗模型,在此基础上利用蚁群算法进行全局搜索得到全局导航路经,然后利用网络分区策略局部调节导航路经上的节点,得到更优路经。实例结果显示,利用该算法可以规划出一条全局优化路经,且收敛效率高。     

The implementation of monetary policy in New Zealand: What factors affect the 90-day bank bill rate?

This paper discusses the implementation of monetary policy in New Zealand and its flow-on effects on the 90-day bank bill rate over the 1999–2005 period. The effects of external factors are considered as well. Our findings indicate that the maturity spectrum ratio exerted a positive effect on the 90-day bank bill rate while the allotment ratio did not. This interest rate had a tendency to revert to the level set by its Australian counterpart, though at a relatively slow speed. No such link exists between the NZ 90-day rate and the U.S. 90-day rate. Neither the maturity spectrum nor the allotment ratio contributed to the volatility of the most important short-term interest rate in New Zealand.     

Same currency,different strategies? The (asymmetric) role of the exchange rate in shaping European agri-food exports

This article uses a nonlinear autoregressive distributed lag (NADRL) model introduced by Shin, Yu, and Greenwood-Nimmo (2014) to assess the role that the exchange rate plays in shaping European agri-food exports after the introduction of the Euro. Although the 10 countries of this study share the same currency (and thus a single nominal exchange rate with the US), cross-country discrepancies of exports’ reactions to exchange rate changes are evident. Moreover, I find that exchange rate changes influence exports asymmetrically in the long run. Euro appreciations are harmful to a lesser extent than Euro depreciations are beneficial for European agri-food exports. The magnitude of this effect is country-specific and varies considerably between individual exporting countries. Exported quantities are less affected by exchange rate fluctuations than export values, which is in line with local currency price stabilization strategies of the exporters. This finding is interpreted as a sign of an incomplete exchange rate pass-through due to strategic (asymmetric) markup adjustments by firms with heterogeneous productivity. Besides that, the outcomes suggest that nonprice competition might be in play in some cases.     

Regime-switching purchasing power parity in Latin America: Monte Carlo unit root tests with dynamic conditional score

We suggest a Monte Carlo simulation-based unit root test of the purchasing power parity theory for Latin American countries. Under the null hypothesis, we use a Markov regime-switching (MS) model with unit root in the conditional location and MS volatility dynamics. Under the alternative hypothesis, the proposed test incorporates Markov regime-switching autoregressive moving average (MS-ARMA) plus MS volatility dynamics. Under both the null and alternative hypotheses, one of the volatility models estimated is Beta-t-EGARCH, which is a recent dynamic conditional score volatility model. We use data on real effective exchange rate time series for 14 Latin American countries. For each country, we estimate by Monte Carlo simulation the critical values of the unit root test. We provide an economic discussion of the unit root test results and also study the robustness of MS-ARMA plus MS volatility with respect to smooth transition autoregressive models with Fourier function.     

An investigation of the effects of exchange rate volatility on exports in East Asia

This study investigates the effects of the exchange rate volatility on the export flows of Indonesia, Malaysia, Republic of Korea, Singapore, Thailand, and the Philippines during 1974–2011. Towards this goal a trade weighted real effective (rather than the bilateral) exchange rate and three different measures of volatility, i.e. obtained from an ARCH model, a GARCH model and a moving-average standard deviation measure are used in this study. Specifically, the export flows between six Asian countries and the rest of the world are investigated rather than focusing on trade with only one country. Our findings reveal that the exchange rate volatility has a significant impact on export flows in the short run as well as in the long run for all the countries in the sample. The impact in the long run is predominantly negative with the exception of Singapore, but in the short run the impact varies across countries. Moreover, our results are robust to the alternative measures of volatility used and most of the findings in the long run and short run are also robust to the crisis period.     

The Interaction of the IFRS 9 Expected Loss Approach with Supervisory Rules and Implications for Financial Stability

This paper examines the interaction of the International Financial Reporting Standard (IFRS) 9 expected credit loss (ECL) model with supervisory rules and discusses potential implications for financial stability in the European Union. Compared to the incurred loss approach of IAS 39, the IFRS 9 ECL model incorporates earlier and larger impairment allowances and is more closely aligned with regulatory expected loss. The earlier recognition of credit losses will reduce the build-up of loss overhangs and the overstatement of regulatory capital. In addition, extended disclosure requirements are likely to contribute to more effective market discipline. Through these channels IFRS 9 might enhance financial stability. However, due to the reliance on point-in-time estimates of the main input parameters (probability of default and loss given default) IFRS 9 ECLs will increase the volatility of regulatory capital for some banks. Furthermore, the ECL model provides significant room for managerial discretion. Bank supervisors might play an important role in the implementation of IFRS 9, but too much supervisory intervention bears the risk of introducing a prudential bias into loan loss accounting that compromises the integrity of financial reporting. Overall, the potential benefits of the standard will crucially depend on its proper and consistent application across jurisdictions.     

基于百度指数的碳交易市场波动率的实证研究

碳交易市场波动率研究主要基于成交量数据对收益率GARCH效应的解释作用。在互联网时代可以有更新更为有效的方法来衡量碳交易市场的波动性。基于“碳交易”词条的百度指数,以湖北碳交易市场中的收益率为样本,本文通过对比使用引入成交量和搜索量的IGARCH（1,1）模型,实证研究发现传统的量价方程的确没有解释力,而百度指数可以对收益率的GARCH效应做出部分合理的解释,这可以在某种程度上反映湖北碳交易市场的交易信息流。