In response to the challenges faced by unmanned swarms in mountain obstacle-breaching missions within complex terrains,such as poor task-resource coupling,lengthy solution generation times,and poor inter-platform coll...In response to the challenges faced by unmanned swarms in mountain obstacle-breaching missions within complex terrains,such as poor task-resource coupling,lengthy solution generation times,and poor inter-platform collaboration,an unmanned swarm scheduling strategy tailored is proposed for mountain obstacle-breaching missions.Initially,by formalizing the descriptions of obstacle breaching operations,the swarm,and obstacle targets,an optimization model is constructed with the objectives of expected global benefit,timeliness,and task completion degree.A meta-task decomposition and reassembly strategy is then introduced to more precisely match the capabilities of unmanned platforms with task requirements.Additionally,a meta-task decomposition optimization model and a meta-task allocation operator are incorporated to achieve efficient allocation of swarm resources and collaborative scheduling.Simulation results demonstrate that the model can accurately generate reasonable and feasible obstacle breaching execution plans for unmanned swarms based on specific task requirements and environmental conditions.Moreover,compared to conventional strategies,the proposed strategy enhances task completion degree and expected returns while reducing the execution time of the plans.展开更多
目的探讨运动联合认知双任务训练对帕金森病患者认知功能的效果。方法遵循PRISMA指南,系统检索Cochrane Library、Web of Science、Embase、PubMed、中国知网、万方数据库、维普和中国生物医学文献数据库中关于运动联合认知双任务训练...目的探讨运动联合认知双任务训练对帕金森病患者认知功能的效果。方法遵循PRISMA指南,系统检索Cochrane Library、Web of Science、Embase、PubMed、中国知网、万方数据库、维普和中国生物医学文献数据库中关于运动联合认知双任务训练对帕金森病患者认知功能影响的随机对照试验(RCT),检索时限为建库至2024年12月20日。采用Cochrane评价手册5.1.0版RCT偏倚风险评估工具和PEDro量表对纳入文献进行质量评价。采用RevMan 5.4进行Meta分析。采用GRADE进行证据质量评价。结果共纳入10篇文献,涉及330例患者,PEDro量表评分6~9分。Meta分析结果显示,运动联合认知双任务训练能改善帕金森病患者的蒙特利尔认知评估(MoCA)评分(MD=2.05,95%CI 0.38~3.73,P=0.02);Stroop色词测试(SCWT)反应时和正确数、连线测试A(TMT-A)、连线测试B(TMT-B)均与对照组无显著性差异(P>0.05)。亚组分析显示,干预时长≥3个月时,MoCA改善效应显著优于对照组(MD=3.64,95%CI3.13~4.16,P<0.001)。双任务训练改善MoCA的GRADE为低级,改善TMT-A、TMT-B、SCWT反应时和正确数为中级。结论运动联合认知双任务训练能改善帕金森病患者整体认知功能,推荐进行≥3个月的干预;对视空间和执行功能的效果有待进一步研究。展开更多
目的:探讨认知-运动双任务训练对脑卒中患者步行稳定性的影响。方法:计算机检索中国知网、万方数据库、Pubmed、Web of Science、Cochrane library等中英文文献数据库关于认知-运动双任务训练对脑卒中患者步行稳定性影响相关的随机对照...目的:探讨认知-运动双任务训练对脑卒中患者步行稳定性的影响。方法:计算机检索中国知网、万方数据库、Pubmed、Web of Science、Cochrane library等中英文文献数据库关于认知-运动双任务训练对脑卒中患者步行稳定性影响相关的随机对照试验。检索时间为数据库建库至2024年8月20日。由2名研究人员独立对纳入文献进行筛选、数据提取和质量评价。采用Revman5.4软件进行Meta分析。结果:共纳入19篇随机对照试验,共823例患者。Meta分析结果显示,与单任务康复组相比,认知-运动双任务组可改善患者平衡功能[MD=3.94,95%CI(2.84,5.05),P<0.0001]、Fugl-Meyer下肢运动功能评分量表(FMA-LE)评分[MD=2.19,95%CI(0.57,3.81),P=0.008]、单任务步速[MD=0.07,95%CI(0.04,0.09),P<0.0001]、双任务步速[MD=0.12,95%CI(0.09,0.15),P<0.0001]、单任务步长[MD=0.03,95%CI(0.00,0.06),P=0.04]、双任务步长[MD=0.01,95%CI(0.01,0.02),P=0.0008],降低患者跌倒发生率[OR=0.32,95%CI(0.11,0.87),Z=2.24,P=0.03],以上差异均具有统计学意义(P<0.05);2组MMSE量表评分[MD=-0.65,95%CI(-5.82,4.51),P=0.80],差异无统计学意义。结论:认知-运动双任务训练可以有效地改善脑卒中患者单任务步长、双任务步长、单任务步速、双任务步速、平衡功能及FMA-LE评分,并降低跌倒发生率,提升其步态稳定性,但对于认知功能的改善情况尚需更多研究进一步验证。展开更多
基金supported by the National Natural Science Foundation of China(61374186)。
文摘In response to the challenges faced by unmanned swarms in mountain obstacle-breaching missions within complex terrains,such as poor task-resource coupling,lengthy solution generation times,and poor inter-platform collaboration,an unmanned swarm scheduling strategy tailored is proposed for mountain obstacle-breaching missions.Initially,by formalizing the descriptions of obstacle breaching operations,the swarm,and obstacle targets,an optimization model is constructed with the objectives of expected global benefit,timeliness,and task completion degree.A meta-task decomposition and reassembly strategy is then introduced to more precisely match the capabilities of unmanned platforms with task requirements.Additionally,a meta-task decomposition optimization model and a meta-task allocation operator are incorporated to achieve efficient allocation of swarm resources and collaborative scheduling.Simulation results demonstrate that the model can accurately generate reasonable and feasible obstacle breaching execution plans for unmanned swarms based on specific task requirements and environmental conditions.Moreover,compared to conventional strategies,the proposed strategy enhances task completion degree and expected returns while reducing the execution time of the plans.
文摘目的:探讨认知-运动双任务训练对脑卒中患者步行稳定性的影响。方法:计算机检索中国知网、万方数据库、Pubmed、Web of Science、Cochrane library等中英文文献数据库关于认知-运动双任务训练对脑卒中患者步行稳定性影响相关的随机对照试验。检索时间为数据库建库至2024年8月20日。由2名研究人员独立对纳入文献进行筛选、数据提取和质量评价。采用Revman5.4软件进行Meta分析。结果:共纳入19篇随机对照试验,共823例患者。Meta分析结果显示,与单任务康复组相比,认知-运动双任务组可改善患者平衡功能[MD=3.94,95%CI(2.84,5.05),P<0.0001]、Fugl-Meyer下肢运动功能评分量表(FMA-LE)评分[MD=2.19,95%CI(0.57,3.81),P=0.008]、单任务步速[MD=0.07,95%CI(0.04,0.09),P<0.0001]、双任务步速[MD=0.12,95%CI(0.09,0.15),P<0.0001]、单任务步长[MD=0.03,95%CI(0.00,0.06),P=0.04]、双任务步长[MD=0.01,95%CI(0.01,0.02),P=0.0008],降低患者跌倒发生率[OR=0.32,95%CI(0.11,0.87),Z=2.24,P=0.03],以上差异均具有统计学意义(P<0.05);2组MMSE量表评分[MD=-0.65,95%CI(-5.82,4.51),P=0.80],差异无统计学意义。结论:认知-运动双任务训练可以有效地改善脑卒中患者单任务步长、双任务步长、单任务步速、双任务步速、平衡功能及FMA-LE评分,并降低跌倒发生率,提升其步态稳定性,但对于认知功能的改善情况尚需更多研究进一步验证。
