Determining optimal cadence for an individual road cyclist from field data

The cadence that maximises power output developed at the crank by an individual cyclist is conventionally determined using a laboratory test. The purpose of this study was two-fold: (i) to show that such a cadence, which we call the optimal cadence, can be determined using power output, heart-rate, and cadence measured in the field and (ii) to describe methodology to do so. For an individual cyclist's sessions, power output is related to cadence and the elicited heart-rate using a non-linear regression model. Optimal cadences are found for two riders (83 and 70 revolutions per minute, respectively); these cadences are similar to the riders’ preferred cadences (82–92?rpm and 65–75?rpm). Power output reduces by approximately 6% for cadences 20?rpm above or below optimum. Our methodology can be used by a rider to determine an optimal cadence without laboratory testing intervention: the rider will need to collect power output, heart-rate, and cadence measurements from training and racing sessions over an extended period (>6 months); ride at a range of cadences within those sessions; and calculate his/her optimal cadence using the methodology described or a software tool that implements it.     

我党老一辈革命家从爱国主义者成长为共产主义者的道路

20世纪20年代，我党老一辈无产阶级革命家实现了从爱国主义者到共产主义者的转变。其道路是：关心国事，研究国情是转变的必要前提；追求真理，追求光明是转变的动力。勤奋学习，刻苦钻研为转变锻造了知识基础；注重修养，锐意进取为转变锻造了思想品质基础。     

谈企业核心竞争力的管理

企业核心竞争力是企业获取竞争优势的来源和基础,加强对企业核心竞争力的管理并不断提升企业核心竞争力,就能使企业长期保持自己的优势。     

基于VPN技术电力营销系统的设计与实现

介绍了VPN的优势特点、安全技术,并以郴电国际汝城分公司为例,通过对电力信息网络的需求进行分析,提出了电力系统营销网络VPN的解决方案.     

静止无功补偿技术的现状及发展

本文介绍了无功补偿技术的现状，分析了各种无功补偿装置的特点，并从性能上与SVG系统作了比较，最后指出利用静止无功补偿装置实现动态无功功率补偿的研究是电力系统一种新的无功补偿方法。     

探索与求解:“三个代表”重要思想与反腐倡廉

中国共产党走过了八十多年光辉战斗历程,面对新世纪新阶段、新任务,必须按照“三个代表”重要思想的要求,全面推进党的建设新的伟大工程,必须坚持不懈地开展反腐败斗争,加强党风廉政建设,构建强有力的权力制衡机制,从体制上铲除腐败。只有这样才能增强党的凝聚力、战斗力、创造力,实现中华民族的伟大复兴。     

散打拳法连击技术的宏观分析

从理论上讲,任意两种或多种拳法之间都可以组合。受传统武术思想的影响,在散打运动员的训练与竞技实践中,拳法连击未能得到人们足够的重视。拳法组合连击技术的进攻形式是非常繁多的,且具有腿法所达不到的高度机动性,灵活快速的攻击是拳法组合连击技术的重要特点之一。     

Design considerations for series hybrid active power filter

Some important factors for designing a series hybrid active power filter (SHAPF) are presented in this paper for the case when the load is varied in a wide range and/or the source voltage is seriously distorted. Special design of passive filters, adaptive control of parameter and multi variant control are discussed in detail. The filter is stable, has good performance, and causes small capacitive reactive current. The simulation and experimental results accorded with the theoretical analysis results. Project supported by DELTA Science, Technology and Education Development Fundation for Power Electronics.     

模糊幂群的结构

引入了模糊核和广义模糊核的概念,系统地讨论了各类模糊幂群的结构,给出了一类模糊幂群的构造定理.     

语文教学与学生创造力的培养

语文教学应改变以前仅把继承和掌握前人积累的语文知识作为语文教学最重要的价值判断，作为语文素质教育的核心来抓的做法，应注重培养学生的创造力，让语文教学真正回归生活，从而获得创造源泉。