试论创作原动力对美术创作的影响

影响创作活动的一个重要因素是原动力．美术创作的原动力不外乎主动和被动两种，或称有意识和无意识。主动创作的美术作品其艺术表现力有一定的局限性，被动（无意识）驱动下创造出的美术作品（被动创作作品）其艺术感染力更强烈、震撼，艺术韵味更深远、悠长，是美术创作领域的灵魂。     

试论第二战场开辟的作用

第二战场的开辟对于整个反法西斯战争的结局起着至关重要的作用。它的开辟打击和消耗了德军的军事力量，加强了苏美英之间的团结合作，减轻了苏德战场上苏军的压力，增强了欧洲人民反法西斯斗争的信心和勇气，从而保证了欧洲反法西斯战争取得全面胜利。     

论拍胸舞的表现力及其体育健身价值

文章以闽南拍胸舞为研究对象,它是先民以舞蹈的形式,体现驱疾逐疬,迎吉纳福为内核的一种古巫现象。通过它实现人与神灵的交流。现今,它仍被广为流传,尤其在泉州地区。拍胸舞作为祭祀的主要手段的同时,还有强身健体的作用。本文从体育保健学,运动生理学和体育心理学的视角探讨拍胸舞。通过分析一个原来纯为宗教祭祀的民间舞蹈之所以能逐步发展成为以娱乐和体育健身为主的大众活动项目的原因,进而体现出拍胸舞所蕴涵的体育健身功能。     

The influence of cadence and power output on force application and in-shoe pressure distribution during cycling by competitive and recreational cyclists

The aim of this study was to determine the response of cyclists to manipulations of cadence and power output in terms of force application and plantar pressure distribution. Two groups of cyclists, 17 recreational and 12 competitive, rode at three nominal cadences (60, 80, 100 rev min -1 ) and four power outputs (100, 200, 300, 400 W) while simultaneous force and in-shoe pressure data were collected. Two piezoelectric triaxial force transducers mounted in the right pedal measured components of the pedal force and orientation, and a discrete transducer system with 12 transducers recorded the in-shoe pressures. Force application was characterized by calculating peak resultant and peak effective pedal forces and positive and negative impulses. In-shoe pressures were analysed as peak pressures and as the percent relative load. The force data showed no significant group effect but there was a cadence and power main effect. The impulse data showed a significant three-way interaction. Increased cadence resulted in a decreased positive impulse, while increased power output resulted in an increased impulse. The competitive group produced less positive impulse but the difference became less at higher cadences. Few between-group differences were found in pressure, notable only in the pressure under the first metatarsal region. This showed a consistent pattern of in-shoe pressure distribution, where the primary loading structures were the first metatarsal and hallux. There was no indication that pressure at specific sites influenced the pedal force application. The absence of group differences indicated that pressure distribution was not the result of training, but reflected the intrinsic relationship between the foot, the shoe and the pedal.     

The continuous measurement of the springboard reaction force in gymnastic vaulting

Abstract

A new method was established for the continuous measurement of force applied from a springboard to a gymnast in vaulting (board reaction force). Male gymnasts performed a handspring vault using a springboard mounted on force platforms. A high-speed video camera sampled the springboard motion at 500 Hz. The springboard was initially partitioned into 29 segments. The force due to the accelerative motion of the springboard was determined by summing the forces of the individual segments. The board reaction force acting on the gymnast was calculated by subtracting the force due to the accelerative motion of the springboard and weight from the force recorded by the force platform. The new method succeeded in illustrating transient changes of the board reaction force. The horizontal and vertical components of the peak values of the board reaction force were three and two times greater respectively than the average values. A series of tests was conducted to determine whether the number of segments of the springboard model could be reduced without affecting accuracy. A model consisting of only four segments produced almost the same accuracy as the 29-segment model. The simplified model is recommended as a more efficient method to measure board reaction force.     

建设高素质专业化创新型教师队伍——基于《中国教育现代化2035》的政策解读

造就党和人民满意的高素质专业化创新型教师队伍,是加快教育现代化、建设教育强国的战略基石。《中国教育现代化2035》将"建设高素质专业化创新型教师队伍"作为教育现代化的十大战略任务之一,从师德师风建设、教师资格准入制度、教师职称与考核制度、建立中国特色教师教育体系、教师职前培养和职后发展、提高教师地位与待遇等方面论述了建设高素质、专业化、创新型教师队伍的方向与路径。该文从概念内涵、现实挑战、建设路径三个方面回应《中国教育现代化2035》中高素质专业化创新型教师队伍建设这一命题,旨在基于《中国教育现代化2035》,对高素质专业化创新型教师队伍的目标、发展、管理、保障和统筹等方面进行政策解读。     

测井法探测剩余油方法研究

本文简单介绍了探测剩余油饱和度和分布的方法,对比各自方法的优缺点,最终选择测井方法探测剩余油。从理论出发建立了基于瞬变电磁法的三层柱状介质模型,通过对模型理论的推导及求解,计算出了地层的感应电动势。并通过软件的仿真,直观地说明了发射电流、发射线圈匝数、收发距对感应电动势的影响,验证了此方法探测剩余油的可行性。     

淮河流域中游湿地景观格局演变的驱动力分析

淮河流域中游河湖湿地水空间巨大。解放后50年来,淮河流域中游地区湿地萎缩,大量的湿地转变成水田和非湿地,大量的天然湿地演变成人工湿地和非湿地,其中又以作为天然湿地主体的河湖湿地损失最多,并存在河湖湿地-滩地-非湿地的演变过程。通过分析得知,在这50年里,影响淮河流域中游湿地景观格局演变的主要驱动力是土地利用和河流调控两大因素。