Off-line simulation of robot welding of radar pedestal

A study of the interference simulation based on robot welding of the radar pedestal was carried out by using the KUKA Sim Pro simulation software and off-line program technology. Compared with the actual robot welding process, it was found that the trajectory of the simulated robot welding process in line with that recorded in the actual welding process, and the actual limit and interference appeared at the same place as the simulation process. There was no interference phenomenon on the outside weld-seam; on the internal weld-seam, especially on the weld-joint of support plate connected to the cylinder, a phenomenon of interference appeared. It was helpful to use the simulation method to guide the actual robot welding so as to protect robot from impacting and reduce the weld defects.     

A protocol for measuring the direct effect of cycling on neuromuscular control of running in triathletes

Abstract

The direct effects of cycling on movement and muscle recruitment patterns (neuromuscular control) during running are unknown but critical to success in triathlon. We outline and test a new protocol for investigating the direct influence of cycling on neuromuscular control during running. Leg movement (three-dimensional kinematics) and muscle recruitment (surface electromyography, EMG) were compared between a control run (no prior exercise) and a 30-min transition run that was preceded by 20 min of cycling. We conducted three experiments investigating: (a) the repeatability (between-day reliability) of the protocol; (b) the ability of the protocol to investigate, in highly trained national or international triathletes, the direct influence of cycling on neuromuscular control during running independent of neuromuscular fatigue; and (c) the ability of the protocol to provide a control, or baseline, measure of neuromuscular control (determined using a measure of stability) without causing fatigue. Kinematic and EMG measures of neuromuscular control during running showed moderate to high repeatability: mean coefficients of multiple correlation for repeatability of EMG and kinematics were 0.816 ± 0.014 and 0.911 ± 0.031, respectively. The protocol provided a robust baseline measure of neuromuscular control during running without causing neuromuscular fatigue (coefficients of multiple correlation for stability of EMG and kinematics were 0.827 ± 0.023 and 0.862 ± 0.054), while EMG and force data provided no evidence of fatigue. The protocol outlined here is repeatable and can be used to measure any direct influence of cycling on neuromuscular control during running.     

The Use of Contextual Interference Trials by Mildly Mentally Handicapped Children

The present study examined the predicted positive and linear relationship (Iwanaga, 1995a, 1995b) between exercise heart rate and music tempo preference. Initially, 128 undergraduate students (M age = 20.0 years, SD = 0.9) were surveyed to establish their three favorite music artists. A separate experimental group of 29 undergraduates (M age = 20.3 years, SD = 1.2) selected the music of a single artist from the three highest-rated artists from the earlier survey. They reported their preference for slow, medium, and fast tempo selections from each artist for three treadmill walking conditions at 40%, 60%, and 75% maximal heart rate reserve. A mixed-model 3 × 3 × 2 (Exercise Intensity × Music Tempo × Gender) analysis of variance was used to analyze the data. Results indicated there was no three-way interaction for music preference. There was, however, a significant (p < .05) two-way interaction for Exercise Intensity x Music Tempo (partial η² = .09) and a significant (p < .05) main effect for music tempo, with large differences evident between preference for medium versus slow tempo and fast versus slow tempo music at all exercise intensities (partial η² = .78). Participants reported a preference for both medium and fast tempo music at low and moderate exercise intensities and for fast tempo music at high intensity. Only partial support was found for the expected linear relationship between exercise intensity and music tempo preference.     

全息照相实验异常现象分析与处理

文章对全息照相实验过程中出现的异常干涉现象：再现像变大变胖，再现像模糊现象进行了分析。并提出了相应的处理方法。     

母语对第二语言习得影响之研究

第二语言研究是指学习者在已有的母语基础上怎样学习另外一种语言。大家普遍认为学习者的第一语言——母语对第二语言习得有很大负面影响。然而，在教学经验和一些第二语言习得理论的基础上，笔者认为母语对第二语言的习得不但不具负面影响，而且有促进作用。本文就此作了研究和分析，指出了母语在第二语言习得过程中是不可忽视的、可资利用的研究基础，它是第二语言习得中的一个很重要的促进因素。     

光分组交换节点物理性能仿真

A graphical and visual simulation system for the study of optical packet switching(OPS)nodes is accomplished.With the simulation system,the effect on physical performance-bit error rate(BER)due to a variety of factors such as the crosstalk parameters of OPS nodes,number of cascaded OPS nodes,length of optical output buffer,traffic load and fluctuation of amplitude of optical signals are evaluated.Reliability of the simulation system is proved by the analytical results obtained in all the above cases.     

英语学习中的语际干扰及对策

本文从不同角度分析了西部少数民族大学生在英语学习中因受本族语发音习惯的影响，所产生的语际干扰的主要原因，提出一些可行的教学建议及对策。     

论和谐社会构建中对传统文化的有效干预

在论证对传统文化进行有效干预必要性的基础上,提出建立干预机制,对传统文化进行规划,并针对目前中国的实际国情,指出应该充分利用语言文字规划平台。     

加入WTO与经济法的几个理论问题

入世之后，随着外国商品、服务和经营者的大量涌入必然导致我国经济关系的变化，尤其是作为社会个体的经营者和社会整体之间的矛盾更引人注目。竞争关系、消费者和经营者关系、宏观经济关系以及企业内部关系等具有社会公共性的经济关系在入世后都呈现国际化的趋势。不仅如此，入世也导致了我国经济立法根据和立法目标的变化，WTO规则及世界利益和国家利益的统一将成为经济立法的根据之一和价值目标，由此，也必然引起政府在经济法中的地位和政府干预经济的方式与手段的变化。     

利用软件陷阱实现8031单片机抗干扰的研究

研究了用软件陷阱技术实现单片机测控系统抗干扰的原理、方法和措施，并通过实践证明该方法是行之有效的。