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【目的】为优化学术性期刊组稿,使已录用的稿件与栏目进行匹配和内部排序布局更加地合理,探讨学术期刊数字化组配系统的构建和应用。【方法】以《指挥控制与仿真》为例,介绍数字化组配系统的模型结构、开发经验及应用成效。【结果】 与传统的人工组稿相比,学术性期刊数字化组配系统能够简化和优化工作流程。【结论】利用学术性期刊数字化组配系统可以提高编辑部工作效率与办公自动化水平。 相似文献
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通过分析人板间力作用的特点,确定了积极蹬伸的评价标准。在此基础上,分别对10名优秀运动员同一动作和王天凌的不同难度动作的积极蹬伸时机进行了运动学分析,提出了高效率的积极蹬伸的运动条件和运动员最佳积极蹬伸时机的决定因素。同时分别得到了一般优秀运动员和王天凌个人积极蹬伸时机的具体运动学参数。 相似文献
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徐海斌 《湖州师范学院学报》2004,26(1):49-53
采用外加电场极化法,运用两步多次高电压脉冲触发的技术,成功地制备出极化区域直径为26mm,周期为6.4μm的Z切0.5mm厚度的PPLN晶片,晶片的畴反转占空比接近50%,同时给出了制备准相位匹配PPLN倍频波导的实验参数。 相似文献
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目的:进一步探讨立定跳板跳水起跳技术的生物力学规律.方法:采用影像分析法、数理统计法等方法,对何冲等7 gila优秀男子跳板跳水运动员起跳缓冲技术进行运动学分析.结果:与其他6名运动员相比.何冲缓冲时间最长(0.08 s),蹬伸压板时间最短(0.2 s),压板末肩关节角度最大141°.结论:髋、膝、踝在缓冲末较小的关节角度可以增加身体重心下降的高度,有利于压板;相关肌群肌肉力量是影响缓冲能力和蹬伸速度的决定因素. 相似文献
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分析了自适应匹配滤波器和向量自回归(VAR)时域白化滤波器. 结果表明,通过最小化用误差平方之和估计的均方误差得到的参量滤波器系数和通过相同阶数的多通道最小二乘法得到的VAR滤波器系数是等价的. 此外,还分析了VAR滤波器最小二乘估计器的渐进性能,分析了滤波器的运算量和杂波抑制性能. 相似文献
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Kirk J. Cureton 《Research quarterly for exercise and sport》2013,84(2):264-268
Abstract We compared cardiorespiratory responses to exercise on an underwater treadmill (UTM) and land treadmill (LTM) and derived an equation to estimate oxygen consumption (VO2) during UTM exercise. Fifty-five men and women completed one LTM and five UTM exercise sessions on separate days. The UTM sessions consisted of chest-deep immersion, with 0, 25, 50, 75, and 100% water-jet resistance. All session treadmill velocities increased every 3 min from 53.6 to 187.8 m·min-1. Cardiorespiratory responses were similar between LTM and UTM when jet resistance for UTM was ≥ 50%. Using multiple regression analysis, weight-relative VO2 could be estimated as: VO2 (mLO2·kg-1·min-1) = 0.19248 · height (cm) + 0.17422 · jet resistance (% max) + 0.14092 · velocity (m·min-1) - 0.12794 · weight (kg) - 27.82849, R2= .82. Our data indicate that similar LTM and UTM cardiorespiratory responses are achievable, and we provide a reasonable estimate of UTM VO2. 相似文献
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以国家队10名优秀男子跳板跳水运动员为研究对象,在合理界定跨跳步时相的基础上,对其摆动肢体的运动特征进行分析。发现跨跳步的摆臂方式是直肘沉臂和屈肘升臂、跨跳步的摆腿是采用控膝摆髋技术来增大人体的压板力量、快升臂和高提腿有利于增大有效压板和腾空高度。同时分别得到了跨跳步自由肢体摆动与支撑腿蹬伸协调配合的具体运动学特征和控膝摆髋技术的具体运动学参数。 相似文献
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A new type of despreader for direct sequence spread spectrum signal is proposed. Compared with traditional despreaders, the new despreader does not contain hard decision ware or handle binary sequence any more, and the locally stored spread spectrum signals are pre-modulated baseband signals (such as Gaussian minimum shift keying (GMSK) signals), which are much more similar to the received spread spectrum signals. Moreover, the missed detection probability of the despreader is about one order of magnitude lower than that of traditional ones. Based on the maximum likelihood criterion and phase probability density function of demodulated signal, a new method of ana- lyzing the despreaders’ performance is put forward, which is proved to be more accurate than traditional methods according to the numerical results. Finally, an adaptive despreader under different signal-to-noise ratios is given. 相似文献