国家审批要求下的城市总体规划编制——中规院近时期承担国家审批城市总体规划审批意见的解读

回顾了国家审批城市总体规划的审批历程、相关要求与成效,对建设部总规纲要审查意见要求、15个部委成果草案审查意见要求、国务院对总规成果批复意见要求进行了初步分析归纳与解读,揭示了总规审批制度的重大作用、需要进一步关注的问题,提出了审批改进方案、相关编制工作改进的构想。     

一种优化设计的动目标检测方法及其运用

提出一种新的动目标检测(MTD)滤波器组设计方法,即通过设置目标处理通道和气象处理通道,其中目标通道采用自适应动目标检测(AMTD)处理方式,实时检测杂波的存在,根据杂波的强弱自动产生或选择滤波器加权因子,以保证对地杂波抑制的同时,减少信噪比损失,提高对弱小目标的检测性能.通过仿真结果,证明该方法是有效的,在工程上有一定的实用价值.     

远距离支援干扰条件下雷达探测范围研究

从雷达基本原理和干扰方程出发,建立了远距离支援式干扰条件下的雷达探测距离模型,研究了不同抗干扰措施下的改善因子,并进一步演算出雷达探测范围方程,利用MATLAB软件对雷达探测威力进行了仿真,分析了不同抗干扰措施对雷达威力的影响,对雷达对抗训练评估具有重要意义。     

Large-area,high-quality self-assembly electron transport layer for organic optoelectronic devices

We propose a self-assembly method for forming large-area high-quality solution-processed titanium oxide (TiO₂) films as efficient electron transport layer for organic solar cells. The self-assembled solution-processed TiO₂ layers are highly ordered and significantly improved in surface morphology over commonly-used spin-coating process resulting in better charge collection and significant material saving. When incorporated into polymer solar cells, the TiO₂ device shows enhanced performance. Furthermore, we demonstrate the TiO₂ can form large-area films, and achieve very uniform and improved device performances. Consequently, the self-assembled TiO₂ films can be efficient and low-cost electron transport layer potentially for large-area organic optoelectronics.     

Understanding individual defects in CdTe thin-film solar cells via STEM: From atomic structure to electrical activity

Here we review a systematic study of the structure-property correlations of a series of defects in CdTe solar cells. A variety of experimental methods, including aberration-corrected scanning transmission electron microscopy, electron energy loss spectroscopy, energy dispersive X-ray spectroscopy, and electron-beam-induced current have been combined with density-functional theory. The research traces the connections between the structures and electrical activities of individual defects including intra-grain partial dislocations, grain boundaries and the CdTe/CdS interface. The interpretations of the physical origin underlying the structure-property correlation provide insights that should further the development of future CdTe solar cells.     

改进BP神经网络在物体识别中的应用

针对传统BP神经网络容易陷入局部极小、收敛速度慢和确定隐含层的神经元个数比较困难等缺点,从结构和算法两方面对BP神经网络进行改进。改进后的网络具有较快的收敛速度和较短的运行时间,加强了BP神经网络的学习能力和自适应能力,并将其应用于物体的分类识别,取得了良好的效果。仿真结果表明了此改进方法的可行性和有效性。     

基于 CDMA 网络监测系统的研究

将CDMA2000作为无线频谱移动监测系统中数据传输的通道,为无线频谱移动监测系统提供实时的数据,它使得无线频谱移动监测系统更为方便和快捷地对系统内的各种资源进行管理     

改进差分进化算法研究及应用

本文研究了差分进化算法的原理和参数的选择方法,重点介绍了具有自适应参数的改进差分进化算法以及在处理整数规划问题时对差分进化算法的改进方法。最后对其进一步研究领域进行了展望。     

Temperature dependent of the current–voltage (I–V) characteristics of TaSi2/n-Si structure

Tantalum silicide (TaSi₂) thin films were deposited on n-type silicon single crystal substrates using a dual electron-gun system and with Ta and Si targets. The electrical transport properties of the TaSi₂/n-Si structures were investigated by temperature-dependent current–voltage (I–V) measurements. The temperature-dependent I–V characteristics revealed that the forward conduction was determined by thermionic-emission and space-charge-limited current mechanisms at low and high voltage respectively. On the other hand, the reverse current is limited by the carrier generation process.     

数字电视中的条件接收系统

数字电视指将传统的模拟信号转化为数字进行处理、传输和接收的系统.数字电视的条件接收系统运用各种数字技术通过对节目的加扰处理,使只有授权用户才能收看被加扰节目,从而保障运营商的利益,保证数字电视发展.本文主要阐述当前数字电视使用的条件接收系统的基本原理,以及实际中应用两种条件接收方式的设计和实现,并比较两种方式的优势和不足.最后介绍当前国内数字电视发展的现状.