信号灯交叉路口的实时控制模型

提出了一个交叉路口交通的实时信号控制方法,它以车流密度作为控制目标来寻找最优的绿灯时间。交叉路口各进入段均装设车辆检测器,并仿真动态车流,以预测下一个信号周期内各停车线处的密度分布。具有仿真精度高,控制实时性好的特点。     

288.2～318.2K下H_2O-HAc体系中HCl的标准迁移热力学量

该文应用离子选择性电极测定了288.2～318.2K间的7个温度下电池 H~+膜电极|HCl(m),H_2O(1—x)+HAc(x)|Cl~-膜电极的电动势,并由此求得了各温度下HCl自水向各组成H_2O-HAc混合溶剂中的标准迁移自由能ΔG_t~?、标准迁移熵ΔS_t~?、标准迁移热焓ΔH_t~?。最后还对实验结果进行了分析,讨论。     

反函数具有极值个数直接超越奇点的亚纯函数的亏值

本文建立了如下结果:设 w=f(z)是一个下级为μ的亚纯函数,z=(w)为其反函数,具有 k(1≤k<∞)个判别直接超越奇点(α_i)i=1,2,…,k。如果 k=2μ,f(z)的亏值数目为 P,则当μ=0时,有 P≤1;当μ>0时,有 P≤2μ。     

海森堡铁磁体表面自旋波

用格林函数运动方程方法研究了海森堡铁磁体表面自旋波谱．对简单立方结构的（００１）自由表面，给出了推迟格林函数的解析表达式和自旋波的色散关系．     

AN ANALYSIS OF DYNAMIC PERFORMANCE OF BACK REST OF WEAVING MACHINERG

Periodic variations of warp tension during a weaving cycle results in corresponding variationsof back rest position.However,the oscillation of back rest,in turn,shows effect on the variation ofdynamic warp tension.As a force transfer medium,warp yarn,with specific dynamic performances,is certainly one of the factors influencing the movement of back rest.In this paper,warp yarn istreated as a viscoelastic medium in studying the dynamic behaviours of back rest.A mathematicalmodel of a back rest system is developed based on the automatic control theory.Several factors arelisted,which show influences on the performances of the back rest system.Analytical work is car-ried out to identify the effects on the frequency response of the back rest systen resulting from vari-ations of such parameters as the modulus of elasticity,of both fast-elastic and slow-elasticdeformations,and viscosity coefficient.     

亚纯函数微分多项式的零点

考虑区域D上的一个亚纯函数和它的一个微分多项式,其中该多项式的系数为D上的亚纯函数,我们给出了其闭包被包含于D内的有界集E上的该微分多项式的零点个数的下界。     

企业绿色营销系统的构建与绩效评价

在构建企业绿色营销系统的基础上，建立绿色营销系统绩效的指标体系，提出对绿色营销系统绩效进行模糊综合评价的方法，为改善绿色营销绩效提供依据。     

秦皇岛旅游区系构成与系统发展

本文从秦皇岛各旅游区结构和功能特点出发，论述了秦皇岛旅游区系的构成状况并提出了系统发展的几个问题．     

Dynamics of proteins in Golgi membranes: comparisons between mammalian and plant cells highlighted by photobleaching techniques

In less than a decade the green fluorescent protein (GFP) has become one of the most popular tools for cell biologists for the study of dynamic processes in vivo. GFP has revolutionised the scientific approach for the study of vital organelles, such as the Golgi apparatus. As Golgi proteins can be tagged with GFP, in most cases without altering their targeting and function, it is a great substitute to conventional dyes used in the past to highlight this compartment. In this review, we cover the application of GFP and its spectral derivatives in the study of Golgi dynamics in mammalian and plant cells. In particular, we focus on the technique of selective photobleaching known as fluorescence recovery after photobleaching, which has successfully shed light on essential differences in the biology of the Golgi apparatus in mammalian and plant cells.