嵌入式控制系统在CPT系统中的应用

对非接触式电能传输系统（简称CPT系统）的总体设计、功能设计和决策控制层硬件架构设计进行了介绍．提出了一种在CPT系统中应用ARM作为决策层,利用DSP实现实时控制的体系架构．在此基础上建立起硬件架构,并给出了系统的程序流程．     

太阳能光伏发电与建筑一体化

太阳能光伏发电是新能源和可再生能源的重要组成部分,被认为是当前世界上最具发展前景的新能源技术.针对太阳能利用和建筑一体化这一新的课题,简述了太阳能光伏发电的工作原理,详细阐述了太阳能光伏与建筑集成系统的组成结构及其功能,并对太阳能光伏发电与建筑一体化的优点和存在的问题进行了详尽的分析.同时,根据目前我国太阳能光伏发电和太阳能光热利用技术日趋成熟的现实,提出了太阳能光伏发电与建筑一体化的发展方向,并预测了其未来的发展.     

Schllkopf手性试剂的合成工艺研究

介绍了Schllkopf手性试剂的合成工艺,以D-缬氨酸为原料,经保护,氯甲酸叔丁酯活化后,与甘氨酸甲酯盐酸盐反应得甲基-N-（叔丁氧基羰基）-D-缬氨酸甘氨酯;酯加热成环后,与三甲氧嗡四氟化硼盐反应得Schllkopf醚,总收率为51.8%。     

Design of 1 kbit antifuse one time programmable memory IP using dual program voltage

A 1 kbit antifuse one time programmable (OTP) memory IP, which is one of the non-volatile memory IPs, was designed and used for power management integrated circuits (ICs). A conventional antifuse OTP cell using a single positive program voltage (V _PP) has a problem when applying a higher voltage than the breakdown voltage of the thin gate oxides and at the same time, securing the reliability of medium voltage (V _M) devices that are thick gate transistors. A new antifuse OTP cell using a dual program voltage was proposed to prevent the possibility for failures in a qualification test or the yield drop. For the newly proposed cell, a stable sensing is secured from the post-program resistances of several ten thousand ohms or below due to the voltage higher than the hard breakdown voltage applied to the terminals of the antifuse. The layout size of the designed 1 kbit antifuse OTP memory IP with Dongbu HiTek’s 0.18 μm Bipolar-CMOS-DMOS (BCD) process is 567.9 μm×205.135 μm and the post-program resistance of an antifuse is predicted to be several ten thousand ohms.     

First principles study on electronic structure and optical properties of quaternary arsenide oxides YZnAsO and LaZnAsO

The electronic structure and optical properties of the tetragonal phase quaternary arsenide oxides YZnAsO and LaZnAsO were studied using density-functional theory(DFT) within generalized gradient approximation(GGA).The band structure along the higher symmetry axes in the Brillouin zone,the density of states(DOS) and the partial density of states(PDOS) were presented.The calculated energy band structures show that both YZnAsO and LaZnAsO are indirect gap semiconductors with band gap of 1.173 1 eV and 1.166 5...     

高压输电线路覆冰问题研究

介绍了高压输电线路覆冰的形成机理、覆冰的种类及影响覆冰的因素,分析了输电线路冰害事故的成因,论述了线路覆冰所造成的主要危害,介绍了融冰技术的研究现状以及防冰除冰的主要方法,并对该项技术的应用前景进行了展望.     

Capacity of unsignalized intersection with mixed distribution headway

In order to describe the time-headway distribution more precisely in urban traffic network,the mixed distribution model was introduced which has been widely used in mathematical statistics,and a capaci...     

奥氏体不锈钢NaOH介质下的失效机理

本文通过对电化学腐蚀的机理的研究以及奥氏体不锈钢腐蚀破坏的金相分析,证明了奥氏体不锈钢与NaOH介质的不相容性。为压力容器制造企业的选材和制造过程提供了较为完整的预防措施,从而保证压力容器的安全使用。     

基于可区分语言模型的微博在线话题检测

针对微博话题检测中需要解决的高维数据、噪声信息以及话题的快速演化等主要问题,提出一个有效的微博在线话题检测模型——可区分语言模型(discriminative language model,DLM).该模型首先选择微博数据的可区分特征子空间,接着利用一元语言模型实现微博话题的在线检测.实验表明,在MACRO_F1和AVG_CDET等指标上,DLM明显优于现有模型,DLM能准确及时发现微博话题.     

宁夏扶贫扬黄灌溉工程盐渍土盐胀特性及对工程破坏的影响研究

针对宁夏扶贫扬黄灌溉工程固海扩灌第四泵站及干渠硫酸盐盐渍土的盐胀规律及特性进行研究,主要是分析硫酸盐盐渍土对水利工程混凝土构筑物的破坏机理,通过现场取样并在室内进行单次降温膨胀试验,得出了硫酸盐盐渍土盐胀特性及其影响因素.盐渍土膨胀变形与土中硫酸钠含量的增加、初始干密度的增大、温度的降低密切相关,剧烈膨胀变形的温度区间集中在15～-5℃