Effective Neural Algorithms for Combinatorial Optimization

This paper provides an overview on the current status of the researches in the field ofneural algorithms for combinatorial optimization and makes some comments on the recent develop-ment.Meanwhile,we point out that such optimization networks suffer from some serious problems.At the end of this psper,we present the readers some aspects which need more researches in thefutlllle.     

应用光敏生物素探针检测杂交瘤及细胞中的小鼠白血病病毒

采用ＢａｍＨＩ酶切和琼脂糖凝胶电泳技术，从重组质粒ＰｓＦｌｌ中回收５ｋｂ小鼠白血病病毒（ＭｕＬＶ）ＤＮＡ片段，经光敏生物素标记后制备ＤＮＡ探针，以斑点杂交法检测杂交瘤细胞、ＭｃＡｂ纯品以及ＳＰ２／０细胞中的ＭｕＬｖ。结果表明：此探针灵敏度可达２５ｐｇ，特异性好，在被检测的１３株杂交瘤细胞和２株ＳＰ２／０细胞中分别查出５株和１株为ＭｕＬｖ阳性，ＭｃＡｂ纯品中未发现ＭｕＬｖ。     

关于三维超导结的Josephson运动方程的研究

文中,三维超导结的Josephson运动方程被推导出来,并求出了它的解.     

异质多特征数据融合在目标关联跟踪上的应用

本文讨论了利用多种异质特征数据诸如空间状态、信号幅度、多普勒频移等信息来实现多目标关联跟踪的方法。文中由品质函数的概念定义了一种关联测度,通过关联测度定量地将可能获得的多特征数据引入关联跟踪算法中。文中阐明这一关联测度是常规关联决策的推广。为验证这一方法的性能,本文还进行了计算机仿真实验,并给出实验结果。     

Highly Sensitive and Portable Gas Sensing System Based on Reduced Graphene Oxide

Graphene has been widely used in gas-sensing applications due to its large specific surface area and strong adsorption ability. Among different forms of graphene used as gas-sensing materials, reduced graphene oxide is one of the most convenient and economical materials to integrate with Si-based electronics, which is very important to graphene-based gas sensors. In addition, the stacking structure of graphene oxide flakes facilitates absorption and detection of gas molecules. Based on reduced graphene oxide, a highly sensitive and portable gas-sensing system was demonstrated here. Solution-based graphene oxide was cast on a chip like a TF memory card and then reduced thermally. A signal acquisition system was designed to monitor resistance variation as a sign of gas concentration. This miniature graphene-based gas sensor array demonstrates a new path for the use of graphene in gas-detection technologies. And the creation of a sensitive and portable graphene gas sensor also shows great potential in fields such as medicine and environmental science.     

Reduction and Simplification of Explicit LTL Model Checking via an Abstraction Method

An abstraction method developed for the explicit linear temporal logic model checking was geared towards reducing the useless part of the state space during the abstraction period.This reduces the cost during the abstraction period relative to models requiring many useless states.A dining-philosophers example comparing this abstraction method with conventional methods indicates that a large proportion of the state space has been reduced by this abstraction method.Finally,the abstract method is shown to be correct and an analysis is given to show how such a large proportion of states can be reduced.     

多媒体软件开发中的色彩心理与运用

多媒体人机界面的开发和设计，已经成为计算机应用系统开发中的一个热点，而目前，国内开发往往将设计的重点集中到软件的功能上，忽略上对人机界面的开发与设计，章对色彩形成原理及色彩心理进行了分析，并通过一系列实验研究了色彩及色彩组合对用户视觉心理的影响，以及不同年龄的用户对色彩的偏好，得到了一些有益的结论。     

氧化钒簿膜电极在锂充电电池中的应用(英文)

鉴于氧化钒是应用于锂充电电池的最有希望的电极材料之一，采用等离子体增强化学气相沉积法（ＰＥＣＶＤ）和激光溅射沉积法（ＰＬＤ），制备了不同的氧化钒薄膜，并研究了它们的电化学性质。这些薄膜具备较高的充放电容量和优良的充放电稳定性。晶体和非晶体的Ｖ２Ｏ５薄膜都可以用ＰＬＤ方法在２００℃和不同的气氛下制备。这些薄膜的充电容量可达３８０ｍＡ·ｈ／ｇ。所制备的最稳定的薄膜是用ＰＥＣＶＤ方法得到的。这些薄膜的Ｏ／Ｖ比很接近Ｖ６Ｏ１３（厚度约为０．５ｕｍ）。它们的放电容量可达４０８ｍＡ．ｈ／ｇ或１２６５ｍＡｈ／ｃｍ３，其能量密度可达９６０．３Ｗ．ｈ／ｋｇ。即使经过４４００次的充放电后，这些薄膜的放电容量仍基本不变。因此，ＰＥＣＶＤ方法及其用它所制备的氧化钒薄膜将是锂充电电池工业很有希望的一种选择。     

一种频率线性可调的正交正弦波振荡器

设计了一种用于MEMS传感器电容读出的频率可调的正弦波振荡器。振荡器采用OTA-C结构,通过调节工作于线性区的MOS管的漏源电压来改变OTA的gm,从而实现对频率的调节。振荡器可输出四路相位分别为90°,180°,270°和360°的振荡信号。芯片在0.5μm 2P3M CMOS工艺下设计并流片,测试表明在5V电源电压下振荡频率在180KHz~1.2MHz之间线性可调,振荡频率对于电源电压变化的灵敏度为8.1%/V。