五元阵雷达信号的数学模型分析

本文针对雷达信号方向侦测问题,首先给出对二元天线阵的简化模型,并建立了五元圆形天线阵的各相位间相位差异的数学模型。文章利用工程数据中各频率下的时域相位中的测量结果对模型进行分析和检验,并得出了较满意的值。     

附加桥壳加工夹具的设计

简要介绍了附加桥壳加工夹具的设计,并利用CATIA三维建模软件进行模拟与仿真操作,使工件在夹具上一次装夹,便完成桥壳所有尺寸的加工。     

高职院校信息素质教育问题与对策研究

随着信息时代的到来,作为我国高等教育主要类型之一的高职教育也必然受到信息革命浪潮的冲击。以接受信息意识的濡染,更新信息道德的观念,提高信息能力,提升终身学习的能力等为主要内容的信息素质教育在高职院校已经不是有没有必要的问题,而是如何尽早实施的问题。     

Past and Future Issues in Motor Programming

The physiological responses of high (HF) and low fit (LF) individuals at given perceived exercise intensities were compared to ranges provided by the American College of Sports Medicine (ACSM). Participants were 7 LF and 8 HF men between the ages of 22 and 26 years. All participants performed a maximum oxygen uptake and lactate threshold test and two 15-min experimental runs in which they exercised at a constant perceived exercise intensity (RPE 13 and 17). The LF group exhibited significantly greater maximum oxygen uptake reserve (%VO₂R; p < .05) and velocity of lactate threshold (p < .01) values than HF at RPE 13 and 17. Both groups had significantly greater %VO₂R and maximum heart rate values at RPE 13 in comparison with the ACSM ranges, using the highest value for the given range (p ≤ .001).     

A Comparison of Video and Text-Based Questionnaire Methods for Testing Older Adults

Abstract

The purpose of this study was to initiate systematic research on dance as a creative and expressive art form. Although the process of expression through movement has concerned dancers and dance teachers for some time, there have been few attempts at a systematic analysis of either the process or the product of dance expression. Dance has generally been considered immeasurable because of its peculiarities as an art form.

While there is little apparent value in quantitative measurement of dance, qualitative measurement appears to have considerable value. It can sharpen the focus on principles of dance composition, contribute toward increased teaching effectiveness, enlarge dance's expressive range, and increase its ability to communicate.

Specifically, this study attempted to determine how effectively modern dance communicates by using a systematic analysis of individual dance compositions. Samples of dance studies with specific intentions were choreographed and filmed. The dances were then viewed and evaluated by a selected and trained jury on (a) their ability to communicate emotional and physical qualities, (b) the type and structure of their composition, and (c) their choreographic and artistic effectiveness.

Results of this study showed that least agreement was reached by the jurors in rating the dances according to structural strength and in identifying their composition type. Realistic vehicles of expression were more easily recognized than were abstract ones. There was substantial agreement on the emotion communicated by each composition. Presence of all the traditional dance elements appears unnecessary for effective communication.     

以学生为主体,让思想品德课活起来

思想品德课是对学生进行思想教育的最佳途径,在教学中,我们必须更新观念,凸显学生的主体地位,引导学生积极参与课堂．让思想品德课活起来。     

浅谈卢卡奇的物化理论思想

卢卡奇在《历史与阶级意识》中不仅为人们描绘出资本主义社会中存在的大量物化现象,更将物化总纳为一种具有普遍性和必然性的概念。物化概念包含两层含义：一是商品中人与人的关系表现为物与物的关系;二是人通过劳动创造的物反过来控制着人。     

大学生公民意识教育探析

随着社会的快速发展,对当代公民大学生的公民意识的要求也越来越高,尤其是对他们权利意识和责任意识的要求,所以现阶段加强大学生的公民意识以及如何提高现代大学生公民意识就显得尤其重要。     

System Analysis for Oxygen Uptake Kinetics with Step and Pseudorandom Binary Sequence Exercise in Endurance Athletes

We examined whether the system analysis for step and pseudorandom binary sequence (PRBS) exercises could be useful to characterize oxygen uptake (VO₂) kinetics of female sedentary subjects and endurance athletes. Breath-by-breath VO₂ was determined during step- and PRBS-cycle ergometer exercises. The time course of the VO₂ kinetics was evaluated by the time constant of the second phase, which should reflect the adjustment of the oxidative metabolism at the skeletal muscle level. The VO₂ kinetics were significantly faster in long-distance runners than in sedentary subjects for both exercises. A significant relationship was observed in the VO₂ kinetics obtained from step and PRBS exercises. In each group, there was no significant difference in the VO₂ kinetics for step and PRBS exercises. These results indicated that the system analysis with PRBS exercises revealed the faster VO₂ kinetics in endurance athletes than in sedentary subjects.     

也谈政治上层建筑的归属问题

政治上层建筑是实实在在的客观存在，它虽通过社会意识而建立，却由经济基础决定，不依人的意识而转移，在当代社会，它与经济关系越来越融为一体，因此它应属于社会存在。现有的哲学教科书把政治上层建筑划归社会意识，在逻辑上是难以自圆其说的，在现实中是同客观事实相矛盾的，其论据也是难以成立的。为了建构马克思主义哲学的当代形态，有必要根据上述情况对现有哲学教科书在这方面的论述进行梳理和修正。