【目的】了解啦啦操运动员损伤风险,探析FMS(Functional Movement Screen)评价啦啦操运动员肌肉力量对称、核心肌群稳定、身体多部位协调用力、不同部位肌肉动员能力的功效。【方法】运用测试法、数理统计法,对广西5所本科院校72名啦啦...【目的】了解啦啦操运动员损伤风险,探析FMS(Functional Movement Screen)评价啦啦操运动员肌肉力量对称、核心肌群稳定、身体多部位协调用力、不同部位肌肉动员能力的功效。【方法】运用测试法、数理统计法,对广西5所本科院校72名啦啦操运动员进行FMS测试。【结论】(1)功能性动作筛查(FMS)评分可以作为啦啦操运动员竞技表现的参考指标之一;(2)啦啦操运动员受伤主要是由不良的脊柱稳定性、较薄弱的深层核心肌群和错误的动作模式造成的动作代偿导致;(3)啦啦操运动员具有较好的肩关节稳定性和腘绳肌的柔韧性,但在髋、膝、踝关节的稳定性及深层核心肌群力量方面存在不足。展开更多
This study explored the concurrent scheduling of machines, tools, and tool transporter(TT) with alternative machines in a multi-machine flexible manufacturing system(FMS), taking into mind the tool transfer durations ...This study explored the concurrent scheduling of machines, tools, and tool transporter(TT) with alternative machines in a multi-machine flexible manufacturing system(FMS), taking into mind the tool transfer durations for minimization of the makespan(MSN). When tools are expensive, just a single copy of every tool kind is made available for use in the FMS system. Because the tools are housed in a central tool magazine(CTM), which then distributes and delivers them to many machines, because there is no longer a need to duplicate the tools in each machine, the associated costs are avoided. Choosing alternative machines for job operations(jb-ons), assigning tools to jb-ons, sequencing jb-ons on machines, and arranging allied trip activities, together with the TT’s loaded trip times and deadheading periods, are all challenges that must be overcome to achieve the goal of minimizing MSN. In addition to a mixed nonlinear integer programming(MNLIP) formulation for this simultaneous scheduling problem, this paper suggests a symbiotic organisms search algorithm(SOSA) for the problem’s solution. This algorithm relies on organisms’ symbiotic interaction strategies to keep living in an ecosystem. The findings demonstrate that SOSA is superior to the Jaya algorithm in providing solutions and that using alternative machines for operations helps bring down MSN.展开更多
文摘目的:探讨胎盘生长因子(placental growth factor,PLGF)、可溶性fms样酪氨酸激酶-1(soluble fms-like tyrosine kinase-1,SFLT-1)和糖基化纤连蛋白(glycosylated fibronectin,GLYFN)检测对子痫前期的预测价值。方法:选择在无锡市妇幼保健院就诊的188例孕妇,分154例正常孕妇(对照组)和34例子痫前期患者(子痫组),应用免疫荧光法分别检测其在孕16~18周血清中PLGF、SFLT-1和GLYFN的浓度,比较子痫前期组和对照组各标志物的水平,并使用受试者操作特征曲线(receiver operating characteristic,ROC)对3种标志物的预测价值进行效能评估。结果:在妊娠中期,子痫前期组血清PLGF浓度低于对照组,SFLT-1及GLYFN浓度均高于对照组,3种标志物的差异均有统计学意义(3指标P=0.000)。95%置信区间的ROC曲线下面积(areas under the ROC curve,AUC)为,PLGF为0.941(0.907~0.974),SFLT-1为0.881(0.800~0.962),GLYFN为0.951(0.918~0.985),联合指标SFLT-1和GLYFN、3项指标联合检测在ROC曲线下面积(areas under the ROC curve,AUC)分别为0.968、0.986。结论:PLGF、SFLT-1、GLYFN 3种标志物水平在对照组和子痫前期组均存在明显差异,对子痫前期的发病具有一定的预测价值,SFLT-1联合PLGF、SFLT-1联合GLYFN、3项指标联合检测对子痫前期的预测价值高于任一单项指标。
文摘【目的】了解啦啦操运动员损伤风险,探析FMS(Functional Movement Screen)评价啦啦操运动员肌肉力量对称、核心肌群稳定、身体多部位协调用力、不同部位肌肉动员能力的功效。【方法】运用测试法、数理统计法,对广西5所本科院校72名啦啦操运动员进行FMS测试。【结论】(1)功能性动作筛查(FMS)评分可以作为啦啦操运动员竞技表现的参考指标之一;(2)啦啦操运动员受伤主要是由不良的脊柱稳定性、较薄弱的深层核心肌群和错误的动作模式造成的动作代偿导致;(3)啦啦操运动员具有较好的肩关节稳定性和腘绳肌的柔韧性,但在髋、膝、踝关节的稳定性及深层核心肌群力量方面存在不足。
文摘This study explored the concurrent scheduling of machines, tools, and tool transporter(TT) with alternative machines in a multi-machine flexible manufacturing system(FMS), taking into mind the tool transfer durations for minimization of the makespan(MSN). When tools are expensive, just a single copy of every tool kind is made available for use in the FMS system. Because the tools are housed in a central tool magazine(CTM), which then distributes and delivers them to many machines, because there is no longer a need to duplicate the tools in each machine, the associated costs are avoided. Choosing alternative machines for job operations(jb-ons), assigning tools to jb-ons, sequencing jb-ons on machines, and arranging allied trip activities, together with the TT’s loaded trip times and deadheading periods, are all challenges that must be overcome to achieve the goal of minimizing MSN. In addition to a mixed nonlinear integer programming(MNLIP) formulation for this simultaneous scheduling problem, this paper suggests a symbiotic organisms search algorithm(SOSA) for the problem’s solution. This algorithm relies on organisms’ symbiotic interaction strategies to keep living in an ecosystem. The findings demonstrate that SOSA is superior to the Jaya algorithm in providing solutions and that using alternative machines for operations helps bring down MSN.
