#6炉B引风机故障引起停机事件分析

针对茂名热电厂#6炉B引风机故障引起#6机停机事件,结合厂家人员的意见,对#6炉B引风机故障事件经过、原因、事件暴露问题等进行分析、阐述,找出整改措施,防止同类事件再次发生。     

认知情态表达的动力图式研究及其教学应用

本文从认知语义学的动力图式角度对情态表达进行研究,继承了动力图式（Force—Dynamic）中对于“趋势”动词命题分析的优势,同时弥补了以往FD研究对含有比较多系动词的命题解释力不强的缺陷。将情态表达的“非现实语义力”等级数量的概念带入FD模式中,重点探讨了情态中心词表达语义力的等级数量划分。使得动力图式更加清晰,释解更为有力。同时指出情态表达的动力图式展现,在英语教学中发挥的认知心理学作用。     

从知识经济时代"大学中心地位说"谈我市高等教育发展

从科技是第一生产力和大学的职能两个方面简要论述了大学中心地位理论,并提出了如何使高等教育在鞍山市的经济社会发展中发挥更大作用的意见。     

Effects of load on ground reaction force and lower limb kinematics during concentric squats

The purpose of this study was to examine the effects of external load on vertical ground reaction force, and linear and angular kinematics, during squats. Eight males aged 22.1?±?0.8 years performed maximal concentric squats using loads ranging from 7 to 70% of one-repetition maximum on a force plate while linear barbell velocity and the angular kinematics of the hip, knee and ankle were recorded. Maximum, average and angle-specific values were recorded. The ground reaction force ranged from 1.67?±?0.20 to 3.21?±?0.29 times body weight and increased significantly as external load increased (P?<?0.05). Bar linear velocity ranged from 0.54?±?0.11 to 2.50?±?0.50?m?·?s^?1 and decreased significantly with increasing external load (P?<?0.05). Hip, knee and ankle angles at maximum ground reaction force were affected by external load (P?<?0.05). The force?–?barbell velocity curves were fitted using linear models with coefficients (r ²) ranging from 0.59 to 0.96. The results suggest that maximal force exertion during squat exercises is not achieved at the same position of the lower body as external load is increased. In contrast, joint velocity coordination does not change as load is increased. The force?–?velocity relationship was linear and independent from the set of data used for its determination.     

《环境的力量》中的伦理困境与身份认同

《环境的力量》收录在毛姆短篇小说集《木麻黄树》中,讲述了主人公盖伊在殖民地的生活经历与情感困惑.本文运用文学伦理学批评的理论与方法探讨其中复杂的伦理关系.通过对盖伊伦理困境、伦理选择的剖析,揭示出以英国文化为代表的西方文明与以马来文化为代表的东方文明之间的不对等关系.     

谈职教生自主学习能力的培养

当前讨论职业教育问题时，往往将关注重点放在国家相关政策的完善和对社会各界支持的呼吁上，而对职教生自身能力的培养却没有引起足够的重视。文章立足于职教生自身，从影响机制、影响因素和影响策略几个方面来研究培养自主学习能力对职教生自身发展的优越性和重要意义。     

健美操训练对女大学生踝关节力觉影响的实验研究

健美操是在音乐的伴奏下,以身体练习为基本手段、以有氧运动为基础,达到增进健康、塑造形体和娱乐目的的一项体育运动。健美操最重要的技术是弹动技术,主要是依靠踝、膝、髋关节的屈伸缓冲而产生,减少运动对关节的冲力,从而减少对人体造成的损伤。踝关节本体感觉能力的增加,可提高踝关节周围神经肌肉控制能力,使踝关节在弹动、跳跃落地时保持身体的协调稳定,控制整个身体姿态,达到美化动作,提高运动技术水平的能力。本研究以健美操训练对女大学生踝关节力觉影响的实验研究为研究对象,旨在探讨健美操运动对踝关节的力觉各指标的影响,为减少踝关节运动损伤的发生和健美操的教学训练、比赛提供一定的理论依据。     

Two views from the summit

This article reviews the objectives and results of the First Phase of the World Summit on the Information Society. It includes an analysis of the discourse conducted to this point at the Summit, and of the possible outcomes.     

基于光电编码器的双馈调速系统中数字信号的检测

光电编码器是电气传动系统中用来测量电动机转速和转子位置的核心部件。本文介绍了其工作原理和主要特点,并给出了电机双馈调速系统中基于增量式光电编码器的电机转速、转子位置及转子感应电势相位的检测方法。     

叙利亚550型钢轧机轧辊轴承及密封结构改进分析

结合轧机负荷的主要特点及工作条件,介绍了轧辊轴承和密封结构的常用类型及选用要点,分析设计实例特点,改进轴承配置和密封结构,给出了优化后的设计方案。