With the rapid development and application of energy harvesting technology,it has become a prominent research area due to its significant benefits in terms of green environmental protection,convenience,and high safety...With the rapid development and application of energy harvesting technology,it has become a prominent research area due to its significant benefits in terms of green environmental protection,convenience,and high safety and efficiency.However,the uneven energy collection and consumption among IoT devices at varying distances may lead to resource imbalance within energy harvesting networks,thereby resulting in low energy transmission efficiency.To enhance the energy transmission efficiency of IoT devices in energy harvesting,this paper focuses on the utilization of collaborative communication,along with pricing-based incentive mechanisms and auction strategies.We propose a dynamic relay selection scheme,including a ladder pricing mechanism based on energy level and a Kuhn-Munkre Algorithm based on an auction theory employing a negotiation mechanism,to encourage more IoT devices to participate in the collaboration process.Simulation results demonstrate that the proposed algorithm outperforms traditional algorithms in terms of improving the energy efficiency of the system.展开更多
目的:系统评价正念减压对辅殖助孕患者的干预效果。方法:检索中国知网、中国生物医学文献数据库、万方数据知识服务平台、维普、PubMed、The Cochrane Library、Embase、Web of Science数据库,收集建库至2023年12月发表的有关正念减压...目的:系统评价正念减压对辅殖助孕患者的干预效果。方法:检索中国知网、中国生物医学文献数据库、万方数据知识服务平台、维普、PubMed、The Cochrane Library、Embase、Web of Science数据库,收集建库至2023年12月发表的有关正念减压在辅助生殖助孕患者中应用的随机对照试验。由两名研究者对文献进行筛选、评价和资料提取,并评价纳入研究的偏倚风险。采用RevMan5.4和Stata17.0软件对纳入文献进行数据分析。结果:共纳入9项研究,1642例患者。Meta分析结果显示:与常规治疗相比,正念减压干预有助于改善辅助生殖助孕患者的心理状态,减轻压力知觉,提高生活质量。以抑郁自评量表(SDS)为评价标准[MD=-8.17,95%CI(-9.16,-7.17),P<0.01],以焦虑自评量表(SAS)为评价标准[MD=-8.71,95%CI(-10.24,-7.18),P<0.01],以压力知觉量表(CPSS)为评价标准[MD=-4.38,95%CI(-5.41,-3.35),P<0.01]。健康状况量表(SF-36量表)的4个评价维度:精神健康[MD=17.50,95%CI(15.67,19.33),P<0.01]、精力[MD=12.05,95%CI(10.18,13.92),P<0.01]、生理职能[MD=8.15,95%CI(6.51,9.79),P<0.01]、生理功能[MD=14.50,95%CI(12.65,16.35),P<0.01]。结论:现有证据表明,正念减压对辅助生殖助孕患者干预效果显著,但受本次纳入研究证据数量、质量限制,尚需开展更多有关辅助生殖助孕患者正念减压干预的高质量研究。展开更多
基金funded by the Researchers Supporting Project Number RSPD2024R681,King Saud University,Riyadh,Saudi Arabia.
文摘With the rapid development and application of energy harvesting technology,it has become a prominent research area due to its significant benefits in terms of green environmental protection,convenience,and high safety and efficiency.However,the uneven energy collection and consumption among IoT devices at varying distances may lead to resource imbalance within energy harvesting networks,thereby resulting in low energy transmission efficiency.To enhance the energy transmission efficiency of IoT devices in energy harvesting,this paper focuses on the utilization of collaborative communication,along with pricing-based incentive mechanisms and auction strategies.We propose a dynamic relay selection scheme,including a ladder pricing mechanism based on energy level and a Kuhn-Munkre Algorithm based on an auction theory employing a negotiation mechanism,to encourage more IoT devices to participate in the collaboration process.Simulation results demonstrate that the proposed algorithm outperforms traditional algorithms in terms of improving the energy efficiency of the system.
文摘目的:系统评价正念减压对辅殖助孕患者的干预效果。方法:检索中国知网、中国生物医学文献数据库、万方数据知识服务平台、维普、PubMed、The Cochrane Library、Embase、Web of Science数据库,收集建库至2023年12月发表的有关正念减压在辅助生殖助孕患者中应用的随机对照试验。由两名研究者对文献进行筛选、评价和资料提取,并评价纳入研究的偏倚风险。采用RevMan5.4和Stata17.0软件对纳入文献进行数据分析。结果:共纳入9项研究,1642例患者。Meta分析结果显示:与常规治疗相比,正念减压干预有助于改善辅助生殖助孕患者的心理状态,减轻压力知觉,提高生活质量。以抑郁自评量表(SDS)为评价标准[MD=-8.17,95%CI(-9.16,-7.17),P<0.01],以焦虑自评量表(SAS)为评价标准[MD=-8.71,95%CI(-10.24,-7.18),P<0.01],以压力知觉量表(CPSS)为评价标准[MD=-4.38,95%CI(-5.41,-3.35),P<0.01]。健康状况量表(SF-36量表)的4个评价维度:精神健康[MD=17.50,95%CI(15.67,19.33),P<0.01]、精力[MD=12.05,95%CI(10.18,13.92),P<0.01]、生理职能[MD=8.15,95%CI(6.51,9.79),P<0.01]、生理功能[MD=14.50,95%CI(12.65,16.35),P<0.01]。结论:现有证据表明,正念减压对辅助生殖助孕患者干预效果显著,但受本次纳入研究证据数量、质量限制,尚需开展更多有关辅助生殖助孕患者正念减压干预的高质量研究。
