基于小波变换的双波段红外图像融合方法

针对红外探测器长波图像和中波图像的特征,采用基于小波变换的方法实现双波段红外图像的融合。在对不同波段红外图像小波分解的基础上,对低频子带图像采用加权平均,对高频子带图像采用区域能量最大的融合规则得到融合图像的多分辨率结构,再利用小波逆变换重构融合图像。仿真结果表明,和普通基于空域加权平均的方法相比无论从主观视觉还是通过客观评价指标的计算结果来看,基于小波变换的双波段红外图像融合方法均具有更为理想的图像融合效果。     

浅析LED工矿灯应用于烟厂卷包车间的优势

本文对LED工矿灯应用于烟厂卷包车间照明上的案例进行分析,在满足烟厂卷包车间照明设计需求的情况下,分析LED工矿灯有别于普通照明设备的优势。     

笔记本电脑图形处理器神鬼交锋

笔记本电脑图形处理器目前可分为内置图形芯片和独立显卡两类。笔记本电脑内置图形芯片现阶段主要有Intel、SiS，VIA、ULi、nVIDIA和ATI等厂商。目前，笔记本电脑内置图形芯片的2D／3D处理性能较差，微软操作系统的多媒体DirectX平台大多只提供对DirectX 7／8的支持，无法满足DirectX 9的多媒体应用需求。     

两级分解—协调方法在交通系统模糊控制中的应用

文章将大系统理论与模糊控制理论相结合，并应用于交通控制系统作了尝试。通过对单路口交通系统的分析，把大系统的分解—协调思想应用于单路口交通模糊控制中，提出了单路口交通系统的两级分解—协调模糊控制方法，并进行了计算机仿真研究。仿真结果表明，文中提出的方法比传统的交通控制方法（全感应控制方法）有效。     

高分子中电子相互作用矩阵元

高分子中二聚化的增强或减弱决定于电子相互作用的力程。为了阐明这个事实的物理原因,本文计算了屏蔽库仑势的对角和非对角相互作用矩阵元。定量地证明了,当力程减小时,非对角相互作用愈来愈重要,它与对角相互作用的竞争使二聚化从增强而变为减弱。 关键词：     

Spectroscopic and Spectroelectrochemical Studies of Interaction of Nile Blue with DNA

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Investigation of the structural and dynamic basis of kinesin dissociation from microtubule by atomistic molecular dynamics simulations

Kinesin is a molecular motor that can step processively on microtubules via the hydrolysis of ATP molecules. An important factor characterizing the processivity of the kinesin motor is its dissociation from the microtubule. Here, using all-atom molecular dynamics simulations, we studied the dissociation process of the kinesin head in weak-microtubule-binding or ADP state from tubulin on the basis of the available high-resolution structural data for the head and tubulin. By analyzing the simulated snapshots of the structure of the head-tubulin complex we provided detailed structural and dynamic information for the dissociation process. We found that the dissociation of the head along different directions relative to the tubulin exhibits very different dynamic behaviors. Moreover, the potential forms or energy landscapes of the interaction between the head and tubulin along different directions were determined. The studies have important implications for the detailed molecular mechanism of the dissociation of the kinesin motor and thus are critical to the mechanism of its processivity.     

Moisture-sensitive torsional cotton artificial muscle and textile

Developing moisture-sensitive artificial muscles from industrialized natural fibers with large abundance is highly desired for smart textiles that can respond to humidity or temperature change.However,currently most of fiber artificial muscles are based on non-common industrial textile materials or of a small portion of global textile fiber market.In this paper,we developed moisture-sensitive torsional artificial muscles and textiles based on cotton yarns.It was prepared by twisting the cotton yarn followed by folding in the middle point to form a self-balanced structure.The cotton yarn muscle showed a torsional stroke of 42.55°/mm and a rotational speed of 720 rpm upon exposure to water moisture.Good reversibility and retention of stroke during cyclic exposure and removal of water moisture were obtained.A moisturesensitive smart window that can close when it rains was demonstrated based on the torsional cotton yarn muscles.This twist-based technique combining natural textile fibers provides a new insight for construction of smart textile materials.     

新型膜萃取／气相色谱-质谱法分析植物花香成分的研究

制备了聚二甲基硅氧烷(PDMS)薄膜,并将其用于顶空膜萃取,对茉莉鲜花的香味成分进行了有效地提取和浓缩.将新型膜萃取技术结合气相色谱-质谱(GC-MS)分析了茉莉鲜花的头香成分.共鉴定出45种化学成分,主要芳香性化学成分依次为芳樟醇(25.26%)、香叶醇(12.85%)、松油醇(8.42%)和2-氨基-苯甲酸甲酯(7.75%).与传统的水蒸气蒸馏法相比,新型膜萃取法不仅操作简便,而且具有较高的采样灵敏度,适于热敏性和易氧化的香味物质的高通量分析,分析结果可为配方、产品开发和调香提供指导.     

信息熵在基因调控网络构建中的应用

目的:基于基因表达的时空特性,寻求一种新的描述基因表达调控网络的方法.方法:用信息熵确定属性权重,对各时间点进行加权聚类:根据信息熵相关系数,得到信息熵相关系数,用于基因之间的调控关系的描述.结果:得到各基因之间的调控矩阵,并用图像可视化.结论:用信息熵确定属性权重,对各时间点进行加权聚类,这种方法根据客观数据计算权重,消除了人为主观因素的影响.