外语学习中错误产生之分析及纠正策略

学生在学习外语时会犯各种各样的错误,产生错误的原因是多种多样的,有语间迁移即母语的影响,也有学生的认知水平、认知方式所造成的,还有教师教学方法不当引起的。因此,要分析产生错误的原因,采取针对性措施,才能有效克服学习过程中产生的问题,取得事半功倍的效果。     

社区矫正的法律问题研究——以农村流动人口罪犯为逻辑起点

从三个理念源——利益协调、和谐与生存发展权出发,研究我国农村流动人口罪犯社区矫正的法律制度,并通过对观念、立法、管辖、形式、机构、队伍建设等六方面问题的考量,提出完善我国农村流动人口罪犯社区矫正制度的路径选择。     

师德评价误区及矫正

师德评价是师德建设中的重要环节。科学、规范的师德评价能以正确的方向引导教师的道德行为,促进师德建设的发展。反之,则会误导教师的行为,阻碍和破坏师德建设。文章分析了目前学校师德评价中存在的误区,并就建立科学的师德评价机制进行了相关思索和探讨。     

湖南人英语学习中最易发错的辅音组及其正音方法

英语和普通话有几组类似的辅音,其中三组湖南人最容易读错读混的辅音是：／l／＆／n／,／f／＆／h／,／v／＆／W／。分析其误读原因,可以帮助我们找到其正音方法。     

热处理对A356合金力学性能的影响

通过对比实验研究了在相同Ti含量和相同钛硼比Wti/WB时,热处理对以不同加Ti、B方式（电解加钛,熔配加钛,钛盐加钛,电解加钛＋Al-B,熔配＋Al-Ti-B,钛盐加钛＋硼盐）配制的A356合金的冲击韧度的影响。结果表明：T5、T6热处理工艺较大提高了A356合金的强度,明显改善了A356合金的冲击韧度;T5、T6工艺对A356合金的强度、冲击韧度的影响差别较小,T6略优;不同的加钛方式对A356合金冲击韧度有显著的影响,电解加钛合金表现出比其他加钛方式具有更好的韧度。     

Three-dimensional tracking of GLUT4 vesicles in TIRF microscopy

TIRF microscopy has provided a means to view mobile granules within 100 nm in size in two dimensions. However quantitative analysis of the position and motion of those granules requires an appropriate tracking method. In this paper, we present a new tracking algorithm combined with the unique features of TIRF. Firstly a fluorescence correction procedure was processed to solve the problem of fluorescence bleaching over time. Mobile granules were then segmented from a time-lapse image stack by an adaptive background subtraction method. Kalman filter was introduced to estimate and track the granules that allowed reducing searching range and hence greater reliability in tracking process. After the tracked granules were located in x-y plane, the z-position was indirectly inferred from the changes in their intensities. In the experiments the algorithm was applied in tracking GLUT4 vesicles in living adipose cells. The results indicate that the algorithm has achieved robust estimation and tracking of the vesicles in three dimensions.     

Numerical simulation and optimization design of the EGR cooler in vehicle

The EGR （exhaust gas recirculation） technique can greatly reduce the NOx emission of diesel engines, especially when an EGR cooler is employed. Numerical simulations are applied to study the flow field and temperature distributions inside the EGR cooler. Three different models of EGR cooler are investigated, among which model A is a traditional one, and models B and C are improved by adding a helical baffle in the cooling area. In models B and C the entry directions of cooling water are different, which mostly influences the flow resistance. The results show that the improved structures not only lengthen the flow path of the cooling water, but also enhance the heat exchange rate between the cool and hot media. In conclusion we suggest that the improved structures are more powerful than the traditional one.     

Theoretical and experimental research on heat transfer performance of the semi-open heat pipe

This paper focuses on the heat transfer performance of semi-open heat pipe which is a new type of heat pipe. After analyzing its condensation heat transfer mechanisms theoretically, several semi-open heat pipes in different length ratios and upper hole diameters are studied experimentally and compared with the same dimensions closed heat pipes. Experimental results show that the heat transfer performance of semi-open heat pipe becomes better by increasing heat transfer rate. At the first transitional point, the heat transfer performance of semi-open heat pipe approaches the level of the closed heat pipe. It is suitable to choose upper small hole about 1 mm in diameter and length ratio larger than 0.6 for the semi-open heat pipe.     

王维诗歌系年考辩（二）

以中华书局版《王维集校注》为据,对其中所涉王维整50首诗歌的编年方面的问题,或指出其误,或考辨订正,或重新系年,以利于参考。     

计及两阶段需求侧响应荷源协调消纳弃风调度模型

提出一种针对弃风消纳的日前日内两阶段调度模型。与传统的热电联合模型相比,引入了基于消费者心理学模型的价格需求响应,其通过极具代表性的历史数据拟合得来且充分考虑用户对电价的响应规律,更符合实际用户情况,最大程度对负荷进行削峰填谷以应对风电的反调峰特性,为风电上网提供空间。日内引入激励性需求响应协调调度,调度模型是以系统总经济成本最小为目标函数的混合整数规划问题。以某地电网为算例表明:所提模型有效,系统总运行经济成本明显减少,弃风状况得到改善。