周期系统的电磁储能与功率

研究了周期系统中电磁场的储能问题以及周期系统中的功率流,为分析周期系统中的各种电磁现象提供了能量守恒的依据.     

我校护基操作教学中双核动力式学习的探究

我校护理教研组为了探讨双核动力式学习模式在基础护理操作教学中应用效果,把护理专业的298名学生随机分为双核动力式学习组和传统式教学组,分别采取相应的教学模式,通过阶段性护理理论、各项护理操作考核和学期结束时问卷调查,分别作为教学效果评价的指标进行评估比较,结果表明,双核动力式学习法在护理操作教学中的教学效果明显优于传统教学法,值得进一步的研究和推广。     

行政与司法角力下的特殊权力关系理论

权力的本性是毫无理性的自我膨胀和扩张,权力最难忍受的是其他权力对其的倾轧和剥夺,法治国下设计权力制衡的理论原点也就在于利用这一本性以“恶”制“恶”,经过权力之间的博弈,最终将权力限制在各自应在的范围之内,达到一种政治权力的平衡状态,保护政治共同体下公民的权利的终极目的在这一过程中,自然地发生和实现。特殊权力关系理论的一个核心问题是司法救济能否进入行政权保守的领域。     

Influence Tactics in the Classroom and Their Relationship to Student Satisfaction*

We argue that an instructor's use of influence tactics can be classified as soft, rational, and strong in nature and that the use of these tactics will have a differential impact on student satisfaction. We find support for the existence of the three categories of influence. We find that student satisfaction is positively influenced by the use of soft and rational tactics, but is uninfluenced by the use of strong tactics.     

HP843磨煤机出力的影响因素

随着直吹式制粉系统的广泛应用,中速磨煤机也在大型火力发电厂中得到了更多的采用,并在生产流程中起到了重要作用,它的制粉出力直接影响到机组带负荷的能力。文章主要分析了HP型磨煤机出力的影响因素,从运行及检修的角度提出了增大磨煤机出力调整办法。     

报告文学家的热血和力量--我的创作体会

报告文学家是时代的弄潮儿，社会的观察者，舆论监督的一员，应当响亮地喊出“干预生活”的口号，弘扬真善美，鞭挞假丑恶，为社会匡正除弊。这就是报告文学家的热血刚肠和道德力量。     

Influence of technique on upper body force and power production during medicine ball throws

ABSTRACT

This project examined the interrelationships between power production and upper body kinematics during a series of medicine ball push-press (MBP-P) throws. Twenty-five regular weight trainers (body mass = 86 ± 10 kg) performed a series of ballistic vertical MBP-P throws at loads representing 5% and 10% of their assessed 5RM bench press. Throws were performed lying supine on a force platform (1 kHz) with upper body kinematics assessed using standard infra-red motion capture techniques (0.5 kHz). Gross measures of performance and power production such as peak vertical ball velocity (Vel_peak), peak force (F_peak) and power (P_peak) were recorded during the propulsive phase of the movement. Comparative analyses indicated that despite significant reductions in Vel_peak from the 5% to 10% loads (P < 0.001), F_peak remained largely unchanged (P = 0.167). Analysis of inter-trial variability showed that the gross measures of performance and power were relatively stable (Coefficient of Variation [CV%] <13%), while most upper limb segmental kinematics varied considerably between trials (CV% up to 70%). This project highlights the complexity of the relationships between power production and upper body kinematics during light load ballistic MBP-P throwing. Additionally, it shows how trained athletes can achieve similar outcomes during ballistic movements using a variety of movement strategies.     

Solution by step functions of a minimum problem in L2[0,T], using generalized h- and g-indices

In this article we solve a minimum problem involving step functions. The solution of this problem leads to an investigation into generalized h- and g-indices. This minimum problem and the related generalized h- and g-indices are studied in a general context of decreasing differentiable functions as well as in the specific case of Lotkaian informetrics. The study illustrates the use of h-and g-indices and their generalizations in a context which bears no relation to the research evaluation context in which these indices were originally introduced.     

一个流传十余载的数学问题的解答

本文给出a~b与b~a在1相似文献   

应用替代法求解转移矩阵

本文根据拟功率定理反映实际电路状态的功率守恒的观点,指出其计算转移矩阵方法的错误,并给出一个简便的替代法,然后计算了一个电路实例。