一种实用的MPLS约束路由算法   总被引：1，自引：0，他引：1  

胡永良 《台州学院学报》2006,28(6):14-15,20

MPLS流量工程是保证网络QOS的有效途径,而显式路径的建立是MPLS流量工程实施的关键问题之一。本文在分析了最近最宽路径算法和负载均衡算法后,提出通过计算网络最大流,以带宽需求为主要依据,同时考虑其它QOS参数的约束路由算法。该算法最大优点是简单实用,与此同时,可以在一定程度上均衡系统的负载。  相似文献   

氧自由基代谢中微量元素的作用机制   总被引：1，自引：0，他引：1  

梅光泉 《襄樊职业技术学院学报》2004,3(1):1-3

对铜锌超氧化物歧化酶、锰超氧化物歧化酶和铁超氧化物歧化酶等三种金属蛋白酶的活性结构及酶蛋白中金属离子催化氧自由基的机理进行了综述。  相似文献   

单点与双点拉剪点焊试样的疲劳特性比较   总被引：1，自引：0，他引：1  

WANG Rui-jie  SHANG De-guang  LI Li-sen  LI Cheng-shan 《实验室研究与探索》2007,(10)

对单点与两点焊拉剪点焊疲劳试样分别进行了疲劳试验,观测了疲劳裂纹的形状和萌生位置,分析了两种试样的疲劳性能。通过有限元模型分析了同等载荷作用下两种试样的变形,对比两种试样的载荷幅寿命关系,认为两点试样的承载能力约为单点试样的两倍。基于此,使用单点试样的载荷幅寿命曲线,预测了两点试样的疲劳寿命,寿命预测结果与实验寿命结果一致。  相似文献   

Rating of perceived exertion in maximal incremental tests during head-out water-based aerobic exercises     

Cristine Lima Alberton  Stephanie Santana Pinto  Tatiane Gorski  Amanda Haberland Antunes  Paula Finatto  Eduardo Lusa Cadore 《Journal of sports sciences》2016,34(18):1691-1698

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Effects of high-intensity interval training on cardiometabolic risk factors in overweight/obese women     

Abbie E. Smith-Ryan  Eric T. Trexler  Hailee L. Wingfield  Malia N.M. Blue 《Journal of sports sciences》2016,34(21):2038-2046

The purpose of this study was to evaluate two practical interval training protocols on cardiorespiratory fitness, lipids and body composition in overweight/obese women. Thirty women (mean ± SD; weight: 88.1 ± 15.9 kg; BMI: 32.0 ± 6.0 kg · m²) were randomly assigned to ten 1-min high-intensity intervals (90%VO₂ peak, 1 min recovery) or five 2-min high-intensity intervals (80–100% VO₂ peak, 1 min recovery) or control. Peak oxygen uptake (VO₂ peak), peak power output (PPO), body composition and fasting blood lipids were evaluated before and after 3 weeks of training, completed 3 days per week. Results from ANCOVA analyses demonstrated no significant training group differences for any primary variables (P > 0.05). When training groups were collapsed, 1MIN and 2MIN resulted in a significant increase in PPO (?18.9 ± 8.5 watts; P = 0.014) and time to exhaustion (?55.1 ± 16.4 s; P = 0.001); non-significant increase in VO₂ peak (?2.36 ± 1.34 ml · kg^?1 · min^?1; P = 0.185); and a significant decrease in fat mass (FM) (??1.96 ± 0.99 kg; P = 0.011). Short-term interval exercise training may be effective for decreasing FM and improving exercise tolerance in overweight and obese women.  相似文献   

辽河柴油十六烷指数的预测     

赵占春 《连云港职业技术学院学报》2003,16(2):18-20

十六烷值是衡量柴油质量的重要指标,本文给出了利用生产数据对辽河柴油进行十六烷指数计算公式.  相似文献   

Talent identification and selection in elite youth football: An Australian context     

Donna O'Connor  Paul Larkin  A. Mark Williams 《European Journal of Sport Science》2016,16(7):837-844

We identified the perceptual–cognitive skills and player history variables that differentiate players selected or not selected into an elite youth football (i.e. soccer) programme in Australia. A sample of elite youth male football players (n?=?127) completed an adapted participation history questionnaire and video-based assessments of perceptual–cognitive skills. Following data collection, 22 of these players were offered a full-time scholarship for enrolment at an elite player residential programme. Participants selected for the scholarship programme recorded superior performance on the combined perceptual–cognitive skills tests compared to the non-selected group. There were no significant between group differences on the player history variables. Stepwise discriminant function analysis identified four predictor variables that resulted in the best categorization of selected and non-selected players (i.e. recent match-play performance, region, number of other sports participated, combined perceptual–cognitive performance). The effectiveness of the discriminant function is reflected by 93.7% of players being correctly classified, with the four variables accounting for 57.6% of the variance. Our discriminating model for selection may provide a greater understanding of the factors that influence elite youth talent selection and identification.  相似文献   

便携式多参数监护仪的研制   总被引：3，自引：0，他引：3  

邹波  范静辉 《深圳职业技术学院学报》2004,3(4):6-9

本介绍了一种便携式人体多参数监护仪的研制方法，包括：心电检测、血压检测、血氧饱和度检测、呼吸检测模拟电路的设计，以及存储单元、A／D转换器、USB通讯口等接口模块的设计。  相似文献   

氧弹灰化法快速测定有机物中的硫含量   总被引：2，自引：0，他引：2  

党民团  杨秋利 《渭南师范学院学报》2004,19(2):36-38

以氧弹燃烧法破坏有机物进行元素测定，方法简便、快捷、无污染，该法用于生物体中硫含量的测定，结果可靠。  相似文献   

紫外线的应用、预报及其预防     

南景宇  岳建一 《河北北方学院学报(社会科学版)》2003,19(3):15-19

随着现代科学技术的进步,紫外技术已得到广泛应用和发展,人类对紫外线的认识越来越全面,对紫外线的预报和预防越来越重视,紫外线与人们日常生活的关系也越来越紧密。然而,在《大学物理》、《光学》等教程中却很少涉及有关紫外线方面的内容,文章力图向大家介绍有关这方面的情况。  相似文献