Objective:To compare the efficacy of anal adenectomy with virtual hanging wire and anal fistulotomy in the treatment of low anal fistula in infants and children.Methods:60 children with low anal fistula who were admit...Objective:To compare the efficacy of anal adenectomy with virtual hanging wire and anal fistulotomy in the treatment of low anal fistula in infants and children.Methods:60 children with low anal fistula who were admitted to our hospital from October 2021 to March 2022 and met the inclusion criteria were randomly divided into two groups of 30 cases each;the treatment group was treated with anal adenectomy and virtual hanging wire surgery,and the control group was treated with anal fistula resection.The clinical efficacy after treatment was compared.Results:The total effective rate of both groups was 96.67%and the difference between the two groups was not statistically significant(P>0.05).The postoperative pain score of the treatment group was lower than that of the control group(P<0.05).The length of hospitalization and healing time of the treatment group was lower than that of the control group(P<0.05).The anal function of the patients in both groups was normal,and there was no adverse reaction.Conclusion:Anal gland excision and virtual hanging surgery for the treatment of low anal fistula in infants and children have the advantages of mild pain,reduced length of hospitalization,short healing time,and better patient experience as compared to anal fistula excision.展开更多
针对自动驾驶决策计算低功耗、低延时、高精度的需求,文章设计一种支持混合精度运算的深度强化学习自动驾驶决策算法的硬件加速器。通过多运算单元重构方式设计乘累加单元(multiply-and-accumulate unit, MAC),支持多种精度模式的计算,...针对自动驾驶决策计算低功耗、低延时、高精度的需求,文章设计一种支持混合精度运算的深度强化学习自动驾驶决策算法的硬件加速器。通过多运算单元重构方式设计乘累加单元(multiply-and-accumulate unit, MAC),支持多种精度模式的计算,提高加速器的灵活性,降低量化模型的部署成本;通过多层次优化数据流,提高复用程度,优化加速器能耗比。在随机潜在演员评论家(stochastic latent actor-critic, SLAC)自动驾驶决策算法上测试该硬件加速器,结果表明:有效算力达到18.3 GOPS,是CPU的10.7倍,GPU的3.3倍;能效比达到2.197 GOPS/W,是CPU的104倍,GPU的28倍。同时提出一种高位数据编码(most significant bit data coding, MSB-DC)方法实现层内混合精度特征图计算,实验结果表明,该方法能以较少的延迟成本有效降低量化所带来的误差。展开更多
This paper considers an intelligent reflecting surface(IRS)-assisted multiple-input multiple-output(MIMO)system.To maximize the average achievable rate(AAR)under outdated channel state information(CSI),we propose a tw...This paper considers an intelligent reflecting surface(IRS)-assisted multiple-input multiple-output(MIMO)system.To maximize the average achievable rate(AAR)under outdated channel state information(CSI),we propose a twin-timescale passive beamforming(PBF)and power allocation protocol which can reduce the IRS configuration and training overhead.Specifi-cally,the short-timescale power allocation is designed with the outdated precoder and fixed PBF.A new particle swarm opti-mization(PSO)-based long-timescale PBF optimization is pro-posed,where mini-batch channel samples are utilized to update the fitness function.Finally,simulation results demonstrate the effectiveness of the proposed method.展开更多
基金Xi’an Municipal Bureau of Science and Technology,No.21YXYJ0060。
文摘Objective:To compare the efficacy of anal adenectomy with virtual hanging wire and anal fistulotomy in the treatment of low anal fistula in infants and children.Methods:60 children with low anal fistula who were admitted to our hospital from October 2021 to March 2022 and met the inclusion criteria were randomly divided into two groups of 30 cases each;the treatment group was treated with anal adenectomy and virtual hanging wire surgery,and the control group was treated with anal fistula resection.The clinical efficacy after treatment was compared.Results:The total effective rate of both groups was 96.67%and the difference between the two groups was not statistically significant(P>0.05).The postoperative pain score of the treatment group was lower than that of the control group(P<0.05).The length of hospitalization and healing time of the treatment group was lower than that of the control group(P<0.05).The anal function of the patients in both groups was normal,and there was no adverse reaction.Conclusion:Anal gland excision and virtual hanging surgery for the treatment of low anal fistula in infants and children have the advantages of mild pain,reduced length of hospitalization,short healing time,and better patient experience as compared to anal fistula excision.
文摘针对自动驾驶决策计算低功耗、低延时、高精度的需求,文章设计一种支持混合精度运算的深度强化学习自动驾驶决策算法的硬件加速器。通过多运算单元重构方式设计乘累加单元(multiply-and-accumulate unit, MAC),支持多种精度模式的计算,提高加速器的灵活性,降低量化模型的部署成本;通过多层次优化数据流,提高复用程度,优化加速器能耗比。在随机潜在演员评论家(stochastic latent actor-critic, SLAC)自动驾驶决策算法上测试该硬件加速器,结果表明:有效算力达到18.3 GOPS,是CPU的10.7倍,GPU的3.3倍;能效比达到2.197 GOPS/W,是CPU的104倍,GPU的28倍。同时提出一种高位数据编码(most significant bit data coding, MSB-DC)方法实现层内混合精度特征图计算,实验结果表明,该方法能以较少的延迟成本有效降低量化所带来的误差。
基金supported by the National Natural Science Foundation of China(62271068)the Beijing Natural Science Foundation(L222046).
文摘This paper considers an intelligent reflecting surface(IRS)-assisted multiple-input multiple-output(MIMO)system.To maximize the average achievable rate(AAR)under outdated channel state information(CSI),we propose a twin-timescale passive beamforming(PBF)and power allocation protocol which can reduce the IRS configuration and training overhead.Specifi-cally,the short-timescale power allocation is designed with the outdated precoder and fixed PBF.A new particle swarm opti-mization(PSO)-based long-timescale PBF optimization is pro-posed,where mini-batch channel samples are utilized to update the fitness function.Finally,simulation results demonstrate the effectiveness of the proposed method.
