体操运动中踝关节可动域的机能解析

通过对踝关节的可动域(ROM)和腓肠肌的几种柔韧性指标的测量与定量分析,揭示了柔韧性练习对肌纤维长度和关节的可动域以及神经系统的支配特点,并对ROM的机能进行了解析.为体操运动中柔韧性的提高与机能开发提供了科学的依据.

Design and Guideline Rules for the Performance Improvement of Vertically Integrated Nanogenerator

Piezoelectric nanowires have attracted much scientific interest in the last few years because of their enhanced piezoelectric coefficients at nanometer scale, with promises of efficient mechanical energy harvesters for autonomous integrated systems. This paper presents the design and, for the first time, guideline rules, based on simple analytical expressions, to improve the performance of a mechanical energy harvester integrating vertical ZnO piezoelectric nanowires. Additional simulations were carried out to account more realistically for device geometry. The authors discuss the prospects of such an approach, based on design and material improvement.

前置性兴奋剂管制:我国反兴奋剂合规制度构建的理论探究

近年来,随着兴奋剂违规监管责任的增加与食品、药品安全隐患的提升,反兴奋剂合规制度具有建构的现实性和必要性。该制度由合规管理部门、合规本体机制、合规运行机制、合规保障机制四大要素构成,具有监督体育竞赛参与人行为合规和监督反兴奋剂行政、执法机关工作合规的双重职能。在行为规训、宣示象征、纯洁竞技等理念的推动下,不仅能够实现个人违规与集体违规责任的分离切割,还具有减免兴奋剂违规的处罚、提升反兴奋剂国际话语权的机能。正因这种优越性,该制度应成为我国反兴奋剂长效治理体系中的重要一环。