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“沃格尔法”在编制最优计划中的应用
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作者 王金利 《山西财经大学学报》 1983年第6期60-66,共7页
“沃格尔法”(vogel Method),又称最小元素差异法。是线性规划中常用的一种方法,可以用来编制最优计划方案。本文仅就此种方法在计划工作中如何应用,我们通过具体例子来加以说明。 一、问题的提出: 假设本地区有甲乙丙丁四个煤炭产区,... “沃格尔法”(vogel Method),又称最小元素差异法。是线性规划中常用的一种方法,可以用来编制最优计划方案。本文仅就此种方法在计划工作中如何应用,我们通过具体例子来加以说明。 一、问题的提出: 假设本地区有甲乙丙丁四个煤炭产区,年产量分别是1300、800、600、1600万吨。有戊己庚辛四个消费地,对煤炭的需要量分别是1000、1500、800、1000万吨,该地区生产量和消费量平衡。由每个产区到各个消费区每吨煤的运费如下表所示。 展开更多
关键词 最优计划 最小元素 分配点 需要量 消费区 分配量 对角 生产量 运出量
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Research for the Relationships between Body Acceleration and Energy Expenditure 被引量:1
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作者 ZHUYi RUANXing-yun SHENGYi XUZhi-rong GUOHai 《Chinese Journal of Biomedical Engineering(English Edition)》 2004年第4期145-151,共7页
During our research,It has been found that body acceleration has strong relationships with the human energy expenditure.This paper discusses the methods to assess physical activity and concludes that for accurate asse... During our research,It has been found that body acceleration has strong relationships with the human energy expenditure.This paper discusses the methods to assess physical activity and concludes that for accurate assessment of physical activity under free living conditions the recently introduced accelerometer looks most promising.We developed a new computerized machine to assess the body activity and energy expenditure.Test datas of the treadmill experiment,respiration experiment and 5-kilometer-running experiment have been archieved,we found that body acceration integrals with time has linear relations with body energy expenture. 展开更多
关键词 Body acceleration Energy expenditure
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Gray Synthetic Evaluation on Moisture Comfort of Sportswear Fabrics under the Condition of Heavy Sweating
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作者 李敏 刘瑜 张渭源 《Journal of Donghua University(English Edition)》 EI CAS 2007年第1期146-150,共5页
Moisture and water transfer under the condition of heavy sweating are analyzed. Four different experiments are made to test moisture resistance, water-keep, wicking effect and drying ability of samples. Then gray anal... Moisture and water transfer under the condition of heavy sweating are analyzed. Four different experiments are made to test moisture resistance, water-keep, wicking effect and drying ability of samples. Then gray analysis method is introduced to evaluate the comprehensive comfort of these fabrics. Result shows chemical fiber with high moisture transfer performance has advantage in water transfer and diffusion, which is suitable for human under the condition of heavy sweating. Though natural fiber can absorb moisture well, it cannot transfer fluid sweat. Therefore natural fiber fabrics such as cotton, wool are unsuitable to make functional sportswear. 展开更多
关键词 clothing comfort moisture transfer heavy sweating vapor diffusion gray clustering analysis
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Improved sweat gland function during active heating in tennis athletes
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作者 Jeong-Beom Lee Soon-Bok Na Tae-Wook Kim 《Journal of Sport and Health Science》 SCIE 2016年第4期443-447,共5页
Background:Relatively few studies on the peripheral sweating mechanisms of trained tennis athletes have been conducted.The purpose of this study was to compare the sweating capacities of tennis athletes against untra... Background:Relatively few studies on the peripheral sweating mechanisms of trained tennis athletes have been conducted.The purpose of this study was to compare the sweating capacities of tennis athletes against untrained subjects(controls).Methods:Thirty-fi e healthy male volunteers participated including 15 untrained subjects and 20 trained tennis athletes(nationally ranked).Active heat generation was performed for 30 min(running at 60%VO2max) in a climate chamber(temperature,25.0°C ± 0.5°C;relative humidity,60% ± 3%,termed active heating).Sweating data(local sweat onset time,local sweat volume,activated sweat glands,sweat output per gland,whole body sweat loss volume) were measured by the capacitance hygrometer-ventilated capsule method and starch-iodide paper.Mean body temperature was calculated from tympanic and skin temperatures.Results:Local sweat onset time was shorter for tennis athletes(p〈0.001).Local sweat volume,activated sweat glands of the torso and limbs,sweat output per gland,and whole body sweat loss volume were significant y higher for tennis athletes than control subjects after active heating(p〈0.001).Tympanic and mean body temperatures were lower among tennis athletes than controls(p〈0.05).Conclusion:These results indicate that tennis athletes had increased regulatory capacity of their sweat gland function. 展开更多
关键词 Activated sweat glands Active heating Sweat onset time Sweat output Sweating function Tennis athletes
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关于缩小现钞与现汇买入价之间差价的思考
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作者 路红娜 曲连波 《中国外汇》 1999年第5期16-16,共1页
关键词 现汇买入价 现钞买入价 外币现钞管理 银行收益 差价率 国家外汇管理局 计算公式 可靠性分析 中间价 运出量
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