UPS网络控制和电压波形显示的研究

对目前在UPS方面研究的焦点问题作了阐述 ,并重点介绍了UPS网络控制系统的实现方法、系统功能和技术特点     

体育培养学生创新和实践能力研究

本文通过对学生创新能力的研究，探讨学生创新能力的内涵，揭示目前培养学生创造力在体育教学中存在的问题，寻求培养学生创新能力的途径和方法，提出教学改革的设想。     

一种用于自动标引系统的主题词自动切分方法

该文着重介绍一种知识指导下的主题词自动切分方法，该方法能灵活处理自然主题词、大幅度跳跃及关联词的切分问题，其字面切分精度达９９．３３％，综合切分精度达９８．９１％。     

非线性退缩抛物型方程组初边值问题的可解性

应用上、下解方法证明非线性退缩抛物组初边值问题当1相似文献   

统计等效多项式非线性系统识别

在平稳激振下的一个非线振动系统，若其响应也是平衡随机过程，该系统可统计等效为一多项多非线性系统，本文介绍统计等效三次多项式的参数估计，系统的多维频率响应应函数以及多项式非线性系统响应的谱分析及谱分析。     

MFRG-DPIR FOR THE DISORDERED TRANSVERSE ISING MODEL

A new approximate scheme which is combined by the mean-field renormalization group theory (MFRG) with the discretized path-integral renormalization (DPIR) is employed in the study of the disordered tranverse Ising model (TIM). The critical properties of random-bonds Ising systems on a d-dimensional lattice are calculated with this new approximate scheme.     

市场营销专业课程体系探索

从市场营销专业人才培养目标出发，分析了市场营销专业课程体系的不足，提出了面向21世纪的市场营销专业课程体系的构建思路。     

从科学哲学视角论经济学研究范式的二重性

基于对西方经济学研究范式变更的历史背景的考察，从科学哲学的视角剖析了实证经济学研究范式与规范经济学研究范式在哲学基础与方法论意义上的区别与联系，提出了经济学研究范式的二重性概念。     

关于对高速公路养护管理的探讨

通过对高速公路养护管理特点、原则、主要内容的阐述,分析并指出现阶段我国高速公路养护管理存在的问题,并对高速公路养护管理的发展提出了的几点建议。     

Detecting myocardial ischemia with 2-D CVIB imaging method--an in vivo animal experiment study

A 2-D cyclic variation of integrated backscatter (CVIB) imaging method was established for detecting myocardial ischemia. To demonstrate the feasibility and validity of this method, animal experiments were conducted. Acute myocardial ischemia was induced by occluding left anterior descending coronary artery in 10 anesthetized open-chest dogs. While scanning the normal hearts and the ischemic hearts with a B scanner, digital radiofrequency data were acquired by a real-time acquisition system in synchronism. The offline analysis to the radio-frequency signal with the 2-D CVIB imaging method was performed to verify the consistency between the imaging result and the design of the experiment. In addition, 4 dogs in experiment were treated with the heart pacemaker in order to investigate the influence of changing in heart rate on the detection of ischemic myocardium with the proposed method. The experimental result showed that the 2-D CVIB imaging method succeeded in detecting the ischemic myocardium and is a new non-invasive way for the cardiologists to both quantitatively and visually evaluate the contractile performance of the myocardium.