SP(6)模型在复合粒子表象理论中的近似表示

运用复合粒子表象理论给出了费米子动力学对称SP(6)模型在s.d玻色子空间中的近似表示,并与精确的Dyson玻色子映像结果作一比较。     

2-距离空间中某些不动点定理

本文建立了2-距离空间映射序列关于s、T在点x_0生成广义轨道完备空间上的某些不动点定理,从而推广了S.V.R.Naidu和J.Rajendra Prasad的结果。     

磁化水处理器在武钢循环冷却水系统中的应用

针对稳定剂三聚磷酸钠处理武钢循环冷却水对环境产生污染的问题，比较了离子交换法、化学投药法、化学清洗法及磁化法的特性、投资及其运行费用，选用磁化水处理器处理武钢循环冷却水，以降低水环境污染、节约用水。     

Dynamic structure factor of a Bose-Hubbard gas

The dynamic structure factor of a Bose-Einstein condensate in an optical lattice, momentum and energy rates imparted to the condensate are analyzed in detail as the function of both the lattice depth and the strength of the two-body interaction. Our investigation shows that the lattice depth strongly affects the dynamic structure factor. An oscillating behavior of both the static structure factor and excitation strength as a function of the momentum transfer has been developed. We also show how interatomic interaction affects these processes and discuss the conditions for possible experimental realization.     

离体植物细胞分化的调控——植物细胞分化与其本身内在因素的关系

本文对近二十年来国内外关于影响离体植物细胞、组织、器官分化的因素研究进行了综合评述,并提出了一个称之为阶段分化的假说且用这个假说来较合适地解释离体植物细胞的分化.与此同时,本文还指出了一些植物组织培养工作面临急需解决的问题。展望未来创造新的植物种类为人类造福.     

基于光照贴图的Web3D全局光照协作式云渲染系统

提出一套视点无关的Web3D协作式全局光照渲染系统,以解决Web3D动态光照实时渲染问题。整套系统由负责全局光照的云渲染器和负责直接光照的Web渲染器构成,并把用户行为作为计算全局光照范围和频率重要参考依据。云渲染器在光照贴图中渲染光照数据,流式化传输到Web渲染器;Web端在对场景进行直接光照渲染后,通过采样光照贴图信息以获得包含全局光照信息的强真实感场景渲染效果。经实验表明,本系统在云端和Web端均有优异的效率表现,并体现出渲染计算强度轻量化、渲染效果真实化。     

Combination Method of Principal Vector Machine for On-line Process Monitoring and Fault Diagnosis

On-line monitoring and fault diagnosis of chemical process is extremely important for operation safety and product quality. Principal component analysis （PCA） has been widely used in multivariate statistical process monitoring for its ability to reduce processes dimensions. PCA and other statistical techniques, however, have difficulties in differentiating faults correctly in complex chemical process. Support vector machine （SVM） is a novel approach based on statistical learning theory, which has emerged for feature identification and classification. In this paper, an integrated method is applied for process monitoring and fault diagnosis, which combines PCA for fault feature extraction and multiple SVMs for identification of different fault sources. This approach is verified and illustrated on the Tennessee Eastman benchmark process as a case study. Results show that the proposed PCA-SVMs method has good diagnosis capability and overall diagnosis correctness rate.     

尾式锌卟啉与含氮类客体轴配反应的光谱及热力学研究

合成了系列溴代烷烃修饰的尾式锌卟啉,以此为主体,研究了尾式卟啉对含氮类客体吡啶、DABCO 和吡嗪的轴向配位反应,测定了这些轴配反应的缔合常数．结果表明:四个主体对同一客体的平衡常数顺序为 Kθ(ZnTPP)>Kθ(ZnPC2Br)>Kθ(ZnPC4Br)>Kθ(ZnPC6Br);而三个含氮类客体对于同一主体平衡常数顺序为 Kθ(pyridine)>Kθ(DABCO)>Kθ(pyrazine)．主体与所有客体的配位数均为1．不同主体体系缔合常数的顺序与主客体结构均有关,是电子效应和空间效应的综合结果．研究了温度对缔合常数的影响,发现各类配位反应的平衡常数均随温度的升高而降低．根据不同温度下的Kθ,确定了配位过程的热力学函数△rHθm,△rSθm,发现反应均为放热、熵减过程．