潜在舆论简析

潜在舆论是相对大众舆论来说的，潜在舆论分为两类：正常潜在舆论与非正常潜在舆论。正常的潜在舆论是在通畅的社会舆论形成渠道中，通过充分的讨论和交流形成的?它具有非主流性、个体性、反社会性及群体特征。所谓非正常潜在舆论是指由于社会舆论形成的渠道不畅所形成的潜在舆论，非正常潜在舆论具有一定正义性、突发性和破坏性。研究潜在舆论有利干更好地进行大众传播的效果研究，有利于更好地指导大众传媒的工作，有利于更好地做好社会管理工作。     

物流之为“第三利润源泉”的理由

从社会化大生产、客户需求、经济全球化、科学技术和发达国家的实践等方面较详细系统地分析论证了物流作为“第三利润源泉”的理由,以及我国加强物流管理的巨大潜力。     

大众传媒对青少年价值取向的负面效应及其对策

大众传媒对青少年价值取向的导向功能，既有积极的正面导向，也有消极的负面导向。大众传媒所宣扬的实用主义、享乐主义、拜金主义、爱情至上等负面价值导向因素，对当代青少年的价值取向产生一定的消极影响。限制和消除大众传媒对青少年价值取向的负面效应，必须纠正人们思想认识上的误区，强化政府的调控手段，发挥家庭教育、学校教育的作用以及重建新的道德价值观念体系。     

新形势下领导干部密切联系群众问题研究——基于湛江的实证分析

领导干部密切联系群众在新世纪新阶段面临很多新挑战和新考验。从湛江的调研来看,一些领导干部不愿联系群众、不善联系群众、不能联系群众。为此,针对产生这些问题的主客观因素,必须立足于解决领导干部愿不愿联系群众、会不会联系群众、能不能联系群众、联系群众行不行的问题,积极探索新形势下领导干部密切联系群众的长效机制。     

冷漠与支持:情境空间视角下的群体性利他行为

考察三个广受关注的社会事件个案,从情境空间的视角对群体性利他行为的发生机制进行探究。发现情景空间的制度化程度是解释群体性利他行为的关键因素;在特定的情境空间中,施暴者的负面标定、受害者的"嵌空间"身份、制度化角色的干预以及旁观者的人口特征等因素都是抑制或催发群体性利他行为的影响变量。     

The biomechanical characteristics of high-performance endurance running

The biomechanical profile of high-level endurance runners may represent a useful model that could be used for developing training programmes designed to improve running style. This study, therefore, sought to compare the biomechanical characteristics of high-performance and recreational runners. Kinematic and kinetic measurements were taken during overground running from a cohort of 14 high-performance (8 male) and 14 recreational (8 male) runners, at four speeds ranging from 3.3 to 5.6?m?s^?1. Two-way ANOVA analysis was then used to explore group and speed effects and principal component analysis used to explore the interdependence of the tested variables. The data showed the high-performance runners to have a gait style characterised by an increased vertical velocity of the centre of mass and a flight time that was 11% longer than the recreational group. The high-performance group were also observed to adopt a forefoot strike pattern, to contact the ground with their foot closer to their body and to have a larger ankle moment. Importantly, although observed group differences were mostly independent of speed, the tested variables showed a high degree of interdependence suggesting an underlying unitary phenomenon. This is the first study to compare high-performance and recreational runners across a full range of kinematic and kinetic variables. The results suggest that high-performance runners maintain stride length with a prolonged aerial phase, rather than by landing with a more extended knee. These findings motivate future intervention studies that should investigate whether recreational runners could benefit from instruction to decrease shank inclination at foot contact.     

No effect of HMB or α-HICA supplementation on training-induced changes in body composition

β-hydroxy-β-methylbutyrate (calcium: HMB-Ca and free acid: HMB-FA) and α-hydroxyisocaproic acid (α-HICA) are leucine metabolites that have been proposed to improve body composition and strength when combined with resistance exercise training (RET). In this double-blind randomized controlled pragmatic trial, we evaluated the effects of off-the-shelf supplements: α-HICA, HMB-FA and HMB-Ca, on RET-induced changes in body composition and performance. Forty men were blocked randomized to receive α-HICA (n?=?10, fat-free mass [FFM]?=?62.0?±?7.1?kg), HMB-FA (n?=?11, FFM?=?62.7?±?10.5?kg), HMB-Ca (n?=?9, FFM?=?65.6?±?10.1?kg) or placebo (PLA; n?=?10, FFM?=?64.2?±?5.7?kg). The training protocol consisted of a whole-body resistance training routine, thrice weekly for 8 weeks. Body composition was assessed by dual-energy x-ray absorptiometry (DXA) and total body water (TBW) by whole-body bioimpedance spectroscopy (BIS), both at baseline and at the end of weeks 4 and 8. Time-dependent changes were observed for increase in trunk FFM (p?相似文献   

后现代哲学视域下的后现代社会和大众文化表征

20世纪六十至七十年代,西方的经济和文化经历了高科技和信息化的转向,文化的消费和文化的商品化成为重要的特征,在哲学上则出现了后现代主义哲学的新的思维观念。20世纪八十年代初,中国社会开始走上"改革开放"的道路,经济和文化开始汇聚到世界性的"全球化"潮流之中,中国产生出了前所未有、规模巨大的大众文化;九十年代以来,改革开放的中国社会显现了后现代社会的特征。本文就中国后现代社会和大众文化的特征进行探讨。     

自由偶极子运动规律研究

讨论了由正负离子实组成的自由偶极子的相互作用能,分析了仅在该作用下偶极子的运动,求解其运动方程,得出自由偶极子的运动为匀速直线运动和简谐振动的叠加,其质心作匀速直线运动,在质心系中,两离子分别在其平衡位置附近作简谐振动.     

战争兵器的革新与武术器械的演变

战争兵器与武术器械曾有过水乳交融的历史阶段。随着科学技术的发展,战争兵器发生了根本性变革,武术器械也随之发生了改变,最终结果是：武术器械脱离了战争兵器,走上了全民健身的发展轨道。本文运用文献资料法、逻辑分析法、观察法等进行了分析。