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写作训练体系的成功构建——《题型写作训练规程》序言 被引量:2
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作者 裴显生 《常州工学院学报》 2003年第5期87-88,共2页
关键词 写作训练体系 《题型写作训练规程 写作教学 创新素质 大学
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无柄手榴弹及其引信设计用弹道特性分析 被引量:1
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作者 王雨时 武波涌 +1 位作者 闻泉 张志彪 《弹箭与制导学报》 CSCD 北大核心 2015年第5期57-60,共4页
为了为某无柄手榴弹总体及其引信设计和运用提供参考,以仿真得到的空气动力特性参数为基础,通过数值求解该无柄手榴弹外弹道质心运动方程,得其外弹道特性。手榴弹在空中飞行时会翻滚,其外形应尽可能设计成球形,质心应位于或靠近阻力中... 为了为某无柄手榴弹总体及其引信设计和运用提供参考,以仿真得到的空气动力特性参数为基础,通过数值求解该无柄手榴弹外弹道质心运动方程,得其外弹道特性。手榴弹在空中飞行时会翻滚,其外形应尽可能设计成球形,质心应位于或靠近阻力中心。最大投掷距离对应的出手角度为42°~45°。手榴弹外弹道与真空弹道差异较大。高原最大投掷距离明显增大,但全飞行时间增长较小。 展开更多
关键词 手榴弹 数值计算 弹道参数 引信 外弹道学 训练规程
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针刺损伤和意外血液接触 被引量:2
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作者 费贵军 《胃肠病学和肝病学杂志》 CAS 2003年第2期116-120,共5页
一、定义 针刺损伤:在医疗过程中,被针头意外刺伤皮肤。 意外血液接触:在医疗过程中,无意间接触血液和(或)混有血液的体液。 二、危险性 针刺损伤或伴随切、咬伤或溅洒等意外事件的损伤所导致的意外血液接触,带来了被血源性(blood-borne... 一、定义 针刺损伤:在医疗过程中,被针头意外刺伤皮肤。 意外血液接触:在医疗过程中,无意间接触血液和(或)混有血液的体液。 二、危险性 针刺损伤或伴随切、咬伤或溅洒等意外事件的损伤所导致的意外血液接触,带来了被血源性(blood-borne)病毒感染的危险性,比如乙型肝炎病毒(HBV)、丙型肝炎病毒(HCV)和人类免疫缺陷病毒(HIV)。 HBV感染危险性=5%~40%; HCV感染危险性=3%~10%; HIV感染危阶性=0.2%~0.5%;静脉吸毒者、男性同性恋者发展中国家人群中的HBV感染率高于平均水平;多次输血者、进行透析治疗者以及静脉吸毒者的HCV感染率高于平均水平;男性同性恋者。 展开更多
关键词 针刺损伤 意外血液接触 感染 疫苗接种 安全操作规程训练 危险性 血源性病毒感染
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The training process: Planning for strength-power training in track and field. Part 2: Practical and applied aspects 被引量:3
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作者 Brad H. DeWeese Guy Hornsby +1 位作者 Meg Stone Michael H. Stone 《Journal of Sport and Health Science》 SCIE 2015年第4期318-324,共7页
Planning training programs for strength-power track and field athletes require an understanding of both training principles and training theory. The training principles are overload, variation, and specificity. Each o... Planning training programs for strength-power track and field athletes require an understanding of both training principles and training theory. The training principles are overload, variation, and specificity. Each of these principles must be incorporated into an appropriate system of training. Conceptually, periodization embraces training principles and offers advantages in planning, allowing for logical integration and manipulation of training variables such as exercise selection, intensification, and volume factors. The adaptation and progress of the athlete is to a large extent directly related to the ability of the coach/athlete to create and carry an efficient and efficacious training process. This ability includes: an understanding of how exercises affect physiological and performance adaptation (i.e., maximum force, rate of force development, power, etc.), how to optimize transfer of training effect ensuring that training exercises have maximum potential for carryover to performance, and how to implement programs with variations at appropriate levels (macro, meso, and micro) such that fatigue management is enhanced and performance progress is optimized. 展开更多
关键词 Periodization PROGRAMMING Strength training Track and field Training process
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The training process: Planning for strength-power training in track and field. Part 1: Theoretical aspects 被引量:3
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作者 Brad H. DeWeese Guy Hornsby +1 位作者 Meg Stone Michael H. Stone 《Journal of Sport and Health Science》 SCIE 2015年第4期308-317,共10页
The process of strength-power training and the subsequent adaptation is a multi-factorial process. These factors range from the genetics and morphological characteristics of the athlete to how a coach selects, orders,... The process of strength-power training and the subsequent adaptation is a multi-factorial process. These factors range from the genetics and morphological characteristics of the athlete to how a coach selects, orders, and doses exercises and loading patterns. Consequently, adaptation from these training factors may largely relate to the mode of delivery, in other words, programming tactics. There is strong evidence that the manner and phases in which training is presented to the athlete can make a profound difference in performance outcome. This discussion deals primarily with block periodization concepts and associated methods of programming for strength-power training within track and field. 2015 Production and hosting by Elsevier B.V. on behalf of Shanghai University of Sport. 展开更多
关键词 Periodization Strength-power training Track and field Training process
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