第一类曲面积分的一种解法

运用第一类曲线积分方法解决一类特殊的第一类曲面积分问题,并举例说明此方法的简便性.     

第一类李拟代数的基本性质

给出了第一类李拟代数的理想、子代数和商代数等基本性质,得到了第一类李拟代数的可解、幂零和Killing型等重要性质.并且给出了导子的一些重要性质.     

第一类超Cartan域上K(a)hler-Einstein度量与Bergman度量的等价性

进一步讨论了第一类超Cartan域上K(a)hler-Einstein度量与Bergman度量的等价问题.运用K(a)hler-Enstein度量与Bergman度量的显表达式以及连续函数的一些性质,得到了第一类超Cartan域上这两类度量等价的简单证明.     

次模函数近似算法求最小弱顶点覆盖

求给定无向图的最小弱顶点覆盖是一个NP困难问题,只能通过研究此问题的近似算法来求解.本文从基本圈出发,定义了一个次模函数,利用次模函数理论来得到一个最小弱顶点覆盖问题的近似解,且近似度为1+ln(d-1),其中d为图的顶点最大度.     

第一类曲面积分计算法的两种向量注记

本文利用微元法,从向量的角度,直观地分析了第一类曲面积分的几何意义,并给出了该类曲面积分计算公式的两种注记.     

建设类高职院校服务新农村建设"五轮驱动"模式实践

介绍了建设类高职院校在服务新农村建设中的优势和劣势,构建和初步实践了建设类高职院校服务新农村建设"五轮驱动"模式,探索了"五轮驱动"模式的运行机制、协调机制、监控机制和总结反馈机制.     

浅论刚果（金）希图鲁铜矿电气设计

结合某国际工程实例，对该工程的电气设计过程中遇到的部分问题，如萃取车间第一类防雷建筑物的保护措施、电积车间两列平行母线之间的距离问题，以及露天采场环形架空线的配电方式等，进行了讨论。     

提高带式烧结机星轮承载能力的方法及仿真研究

通过对带式烧结机星轮承载能力的研究分析,揭示了星轮表面产生塑性变形、飞边的原因;提出了提高星轮表面承载能力的方法,包括辊轮空心、斜面星轮齿面、降低齿面摩擦等方法,并对辊轮空心以及斜面星轮齿面进行了非线性有限元分析,证明了其在提高星轮齿面承载能力方面的有效性.     

一种基于密度的模糊自适应聚类算法

针对密度聚类算法对邻域参数设置敏感的问题,提出一种基于密度的模糊自适应聚类算法.算法在无需预先设置聚类数以及邻域参数的情况下,可以自适应地根据样本间距离关系确定邻域半径得到样本密度,并根据样本密度逐渐增加聚类中心.为了保障聚类结果的正确性,同时提出一种新的模糊聚类有效性指标以判断最佳聚类数,消除了密度聚类算法对参数的敏感性.用UCI基准数据集进行实验,发现本文算法在对数据进行聚类时,聚类质量较原始密度聚类算法在准确性和自适应性方面均有显著提高.      

一种新的模糊系统建模方法研究与应用

基于聚类技术和一类模糊神经网络,提出一种新的自动生成模糊系统规则库的设计方法.通过结构辨识(原始数据聚类得到模糊规则数)和参数辨识(RBF网络优化参数)方法,构造模糊系统完善的模糊规则库.通过对丙烯腈收益率问题及函数逼近问题的仿真,说明了该方法具有规则数目少、学习速度快、建模精度高等特点.     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。