基于模因论的大学英语教学策略探讨

模因论为英语教学的研究提供了一个新的视角。基于模因论的英语教学策略认为,教师们在组织课堂教学时,应该根据语言模因传播的不同阶段,来组织教学内容。文章从模因传播的四个阶段——同化、记忆、表达和传播来探讨大学英语教学策略。     

收入流动性、代际传递与农村反贫困———异质性视角下新疆30个贫困县的实证分析简

文章从收入流动性、贫困代际传递与反贫困关系的理论研究入手,利用2000—2012年数据,选取新疆30个贫困县为研究主体,运用面板模型和面板误差修正模型分析了三者之间的长期和短期动态关系。研究发现：（1）从长期看,收入流动性、贫困代际传递对反贫困有显著作用,且收入流动性对反贫困的促进作用依赖于该县的贫困水平;（2）短期而言,新疆30个贫困县的收入流动性、贫困代际传递对反贫困的效果存在异质性。因此,建议制定以提高收入流动性和减少贫困代际传递为目标的对策和机制,并注重实行差异化措施来达到反贫困效果。     

International Transmission of the People's Bank of China's Balance Sheet Expansion

The People's Bank of China's (PBoC) balance sheet expanded more dramatically than any of its major international counterparts during the past decade. The main contribution to this expansion was the rapid accumulation of the central bank's foreign assets, as a result of foreign exchange market intervention. In this paper, we examine the possible international transmission of this expansion by analyzing monthly data for China and 15 other countries over the period 2000–2012. Impulse response analysis based on vector autoregression modeling suggests that the PBoC's balance sheet expansion has greater impacts on developing than on developed countries. So far the influences appear to be dominated by “trade channels” instead of “financial channels,” possibly due to China's capital account controls. However, the impacts of the PBoC's balance sheet expansion on other countries' interest rates, exchange rates, and stock market prices could strengthen significantly in the coming years as China's economic scale grows and its capital account opens up.     

Interbank Relationships and the Credit Channel in Germany

A crucial condition for the existence of a credit channel through bank loansis that monetary policy should be able to change bank loan supply. This papercontributes to the discussion on this issue by presenting empirical evidence fromdynamic panel estimations based on a dataset that comprises individual balancesheet information on all German banks. It shows that the average bank reduces itslending more sharply in reaction to a restrictive monetary policy measure the lowerits ratio of short-term interbank deposits to total assets. A dependence on its size canonly be found if explicitly controlled for this dominating effect. Overall, the evidenceis compatible with the existence of a credit channel but the results indicate that it is weakened by the network structures that exist in the German banking system.     

Capital Controls,Global Liquidity Traps,and the International Policy Trilemma*

The zero bound on interest rates introduces a new dimension to the trilemma in international policy. The openness of the international financial market might render monetary policy ineffective, even within a system of fully flexible exchange rates, because shocks that lead to a liquidity trap in one country are propagated through financial markets to other countries. However, the effectiveness of monetary policy can be restored by the imposition of capital controls. We derive the optimal response of monetary policy to a global liquidity trap in the presence of capital controls. We show that, even though capital controls might facilitate effective monetary policy, capital controls are not generally desirable in terms of welfare.     

煤炭资源开发对中国煤炭城市经济增长的影响——基于资源诅咒学说的经验研究

文章针对我国煤炭城市普遍存在的煤炭资源大量开采输出与经济发展水平滞后并存的反差现象,运用资源诅咒学说,通过数理模型的推导讨论了煤炭资源开发对煤炭城市长期经济增长产生的四种不同效应,并利用我国28个地级煤炭城市1997-2007年的面板数据,对煤炭资源开发与煤炭城市经济增长之间的关联效应及其传导机制进行了实证考察。结果显示:煤炭资源的开发确实束缚了煤炭城市的经济增长而产生了资源诅咒效应;固定资产投资和制造业投入对煤城经济增长的促进作用较为显著,科技投入对经济增长也表现出了一定的推动作用,但外资投入和人力资本投入的作用均不显著;煤炭城市经济发展中的要素利用效率偏低,粗放式的增长模式表现明显;煤炭资源开发主要通过削弱制造业投入、外资投入、科技投入和人力资本投入这四种传导途径来制约经济增长,其中制造业投入是作用最强的传导因素。最后文章为我国煤炭城市的经济发展提出了针对性的政策建议。     

Like father, like son? A note on the intergenerational transmission of IQ scores

Using a large population-based dataset, we estimate a substantial intergenerational transmission of IQ scores; a 10% increase in father's score at age 18 is associated with a 3.2% increase in son's score. This relationship also holds true for various subpopulations.     

浅谈特高压输电线路工程投资控制

1000kV晋东南-南阳-荆门特高压交流实验示范输电线路工程和向家坝-上海±800kV特高压直流输电线路工程分别是国际上商业运营的输电电压等级最高、技术最先进的交、直流输电线路工程。特高压输电线路工程施工阶段是落实合同,实施投资控制的关键环节,它贯穿监理的全过程,是监理工作的重要组成部分。加强特高压输电线路工程施工过程的投资控制,对特高压工程今后的发展建设有重要而深远的意义。全文结合特高压线路建设实际,对提前策划、加强投资过程控制、结算阶段投资控制等进行阐述分析。     

电缆线路接地原因和事故处理原则

电力电缆是传输和分配电能的一种特殊电线,由于运行可靠,节约空间,维护工作量小,不需频繁的巡视而广泛、大量地被应用于发电厂及变电站的接线中。而电缆线路一旦出现故障,多数是永久性故障,故障隐蔽,不易查找,时间越长,危害越大,如不及时采取措施,就会危及其余线路,甚至造成母线失压,影响电网安全。     

山区输电线路塔位边坡治理方法及技术经济分析

针对目前山区输电线路铁塔塔位边坡的特点，总结输电线路工程中常见的塔位边坡主要处理措施，包括工程治理、生物治理，对相应方法的适用范围和优缺点进行了比较分析，提出了合理的环保设计建议。