The first mid-term election of the U. S. in the new century took place on November 5, 2002. One third of the senators from the 107th Congress (34 out of 100), all representatives (435), 36 state governors, and numerou...The first mid-term election of the U. S. in the new century took place on November 5, 2002. One third of the senators from the 107th Congress (34 out of 100), all representatives (435), 36 state governors, and numerous local officials and legislators were to be elected or reelected. The resounding victory of the GOP in the congressional elections and the fact that the Democrats only got three more.展开更多
Objective Transesophageal echocardiography (TEE) guided,minimally invasive perventricular device occlusion of ventricular septal defects (VSDs) without cardiopulmonary bypass (CPB) has been applied in multiple centers...Objective Transesophageal echocardiography (TEE) guided,minimally invasive perventricular device occlusion of ventricular septal defects (VSDs) without cardiopulmonary bypass (CPB) has been applied in multiple centers. We reported experiences and the mid-term results. Methods Four hundred and thirty-two cases from 4 cardiac centers were involved in the study. There were 235 maled and 197 females,aged from 3 months to 15 years,with a body weight varying from 4.0 to 26.0 kg.展开更多
Objective To compare the clinical outcomes of Bryan disc replacement with anterior cervical discectomy and fusion (ACDF) in patients with cervical spondylopathy. Methods Sixteen patients underwent Bryan cervicaldisc r...Objective To compare the clinical outcomes of Bryan disc replacement with anterior cervical discectomy and fusion (ACDF) in patients with cervical spondylopathy. Methods Sixteen patients underwent Bryan cervicaldisc replacement (A group) ,and展开更多
Due to the stochastic and correlated attributes of natural inflows, the mid-term generation scheduling problem for cascaded hydro systems is a very challenging issue.This paper proposes a novel stochastic optimization...Due to the stochastic and correlated attributes of natural inflows, the mid-term generation scheduling problem for cascaded hydro systems is a very challenging issue.This paper proposes a novel stochastic optimization algorithm using Latin hypercube sampling and Cholesky decomposition combined with scenario bundling and sensitivity analysis(LC-SB-SA) to address this problem.To deal with the uncertainty of natural inflows, Latin hypercube sampling is implemented to provide an adequate number of sampling scenarios efficiently, and Cholesky decomposition is introduced to describe the correlated natural inflows among cascaded stations.In addition, to overcome the difficulties in solving the objectives of all the scenarios, scenario bundling and sensitivity analysis algorithms are developed to improve the computational efficiency.Simulation results from both two-station and tenstation systems indicate that the proposed method has the merits in accuracy as well as calculation speed for the midterm cascaded hydro generation scheduling.The consideration of natural inflow correlation makes the formulated problem more realistic.展开更多
目的分析大动脉调转术(arterial switch operation,ASO)后中远期残余的危险因素及再干预策略。方法回顾性纳入2006年1月—2022年6月于上海儿童医学中心接受ASO手术的复杂性先天性心脏病患儿,分析ASO术后中远期残余的危险因素。结果共纳...目的分析大动脉调转术(arterial switch operation,ASO)后中远期残余的危险因素及再干预策略。方法回顾性纳入2006年1月—2022年6月于上海儿童医学中心接受ASO手术的复杂性先天性心脏病患儿,分析ASO术后中远期残余的危险因素。结果共纳入952例ASO手术患儿,其中男654例、女298例,平均年龄(102.9±90.1)d,平均体重(4.6±1.6)kg。完全性大动脉转位合并室间隔完整(D-transposition of the great arteries with intact ventricular septum,D-TGA/IVS)421例,完全性大动脉转位合并室间隔缺损(D-transposition of the great arteries with ventricular septal defect,D-TGA/VSD)357例,右室双出口合并肺动脉下室间隔缺损(TaussigBing畸形)174例。术后早期死亡89例,死亡率为9.3%。746例生存患儿术后规律随访(随访率86.4%),中位随访时间79.4(12.0~188.0)个月。随访过程中53例患儿因残余问题行外科再干预,其中男33例、女20例,中位手术年龄62.5(17.0~214.0)个月,中位手术体重19.0(8.2~86.0)kg,平均再干预时间为ASO术后28.0~170.0(77.5±45.4)个月。残余问题包括肺动脉总干及分支狭窄23例,右室流出道(right ventricular outflow tract,RVOT)梗阻11例,左室流出道梗阻6例,主动脉弓再狭窄5例,主动脉瓣关闭不全5例,室间隔缺损残余分流2例,三尖瓣关闭不全1例。术后早期死亡率为3.8%(2/53),死亡原因分别为冠状动脉损伤引起的急性心肌梗死和急性左心功能衰竭。生存患儿术后平均随访(52.4±28.6)个月,无中远期死亡,2例患儿因肺动脉再狭窄行第三次手术。多因素分析显示,合并主动脉弓手术及术后早期RVOT流速>3 m/s是ASO术后中远期发生残余的独立危险因素。结论ASO是治疗D-TGA/IVS、D-TGA/VSD及Taussig-Bing畸形的理想手术方式。合并主动脉弓手术及术后RVOT流速>3 m/s是ASO术后中远期发生残余的独立危险因素。展开更多
为了保障城市电网规划质量和做好电力电量平衡,准确的中长期电力负荷预测变得尤为重要。针对现有方法在利用城市区域间空间关联性方面的不足,提出了一种基于动态时间规整(dynamic time warping,DTW)和时空注意力图卷积(spatio-temporal ...为了保障城市电网规划质量和做好电力电量平衡,准确的中长期电力负荷预测变得尤为重要。针对现有方法在利用城市区域间空间关联性方面的不足,提出了一种基于动态时间规整(dynamic time warping,DTW)和时空注意力图卷积(spatio-temporal attention graph convolution,ASTGCN)的预测方法。首先,通过深入分析目标城市各区域间的相关性,建立了耦合关系;其次,利用DTW算法构建邻接矩阵,捕捉城市各区域间的时空相关性;然后,应用ASTGCN模型预测各区域的负荷,以捕捉负荷的时空特征;最后,通过合并各区域的预测结果,得到整体的城市预测负荷。实验结果表明:所提方法能够更全面地捕捉城市中的时空关系,显著提高中长期负荷预测精度。展开更多
文摘The first mid-term election of the U. S. in the new century took place on November 5, 2002. One third of the senators from the 107th Congress (34 out of 100), all representatives (435), 36 state governors, and numerous local officials and legislators were to be elected or reelected. The resounding victory of the GOP in the congressional elections and the fact that the Democrats only got three more.
文摘Objective Transesophageal echocardiography (TEE) guided,minimally invasive perventricular device occlusion of ventricular septal defects (VSDs) without cardiopulmonary bypass (CPB) has been applied in multiple centers. We reported experiences and the mid-term results. Methods Four hundred and thirty-two cases from 4 cardiac centers were involved in the study. There were 235 maled and 197 females,aged from 3 months to 15 years,with a body weight varying from 4.0 to 26.0 kg.
文摘Objective To compare the clinical outcomes of Bryan disc replacement with anterior cervical discectomy and fusion (ACDF) in patients with cervical spondylopathy. Methods Sixteen patients underwent Bryan cervicaldisc replacement (A group) ,and
基金supported in part by National Natural Science Foundation of China (No.51507100)in part by Shanghai Sailing Program (No.15YF1404600)+1 种基金in part by ‘‘Chen Guang’’ project supported by Shanghai Municipal Education CommissionShanghai Education Development Foundation (No.14CG55)
文摘Due to the stochastic and correlated attributes of natural inflows, the mid-term generation scheduling problem for cascaded hydro systems is a very challenging issue.This paper proposes a novel stochastic optimization algorithm using Latin hypercube sampling and Cholesky decomposition combined with scenario bundling and sensitivity analysis(LC-SB-SA) to address this problem.To deal with the uncertainty of natural inflows, Latin hypercube sampling is implemented to provide an adequate number of sampling scenarios efficiently, and Cholesky decomposition is introduced to describe the correlated natural inflows among cascaded stations.In addition, to overcome the difficulties in solving the objectives of all the scenarios, scenario bundling and sensitivity analysis algorithms are developed to improve the computational efficiency.Simulation results from both two-station and tenstation systems indicate that the proposed method has the merits in accuracy as well as calculation speed for the midterm cascaded hydro generation scheduling.The consideration of natural inflow correlation makes the formulated problem more realistic.
文摘目的分析大动脉调转术(arterial switch operation,ASO)后中远期残余的危险因素及再干预策略。方法回顾性纳入2006年1月—2022年6月于上海儿童医学中心接受ASO手术的复杂性先天性心脏病患儿,分析ASO术后中远期残余的危险因素。结果共纳入952例ASO手术患儿,其中男654例、女298例,平均年龄(102.9±90.1)d,平均体重(4.6±1.6)kg。完全性大动脉转位合并室间隔完整(D-transposition of the great arteries with intact ventricular septum,D-TGA/IVS)421例,完全性大动脉转位合并室间隔缺损(D-transposition of the great arteries with ventricular septal defect,D-TGA/VSD)357例,右室双出口合并肺动脉下室间隔缺损(TaussigBing畸形)174例。术后早期死亡89例,死亡率为9.3%。746例生存患儿术后规律随访(随访率86.4%),中位随访时间79.4(12.0~188.0)个月。随访过程中53例患儿因残余问题行外科再干预,其中男33例、女20例,中位手术年龄62.5(17.0~214.0)个月,中位手术体重19.0(8.2~86.0)kg,平均再干预时间为ASO术后28.0~170.0(77.5±45.4)个月。残余问题包括肺动脉总干及分支狭窄23例,右室流出道(right ventricular outflow tract,RVOT)梗阻11例,左室流出道梗阻6例,主动脉弓再狭窄5例,主动脉瓣关闭不全5例,室间隔缺损残余分流2例,三尖瓣关闭不全1例。术后早期死亡率为3.8%(2/53),死亡原因分别为冠状动脉损伤引起的急性心肌梗死和急性左心功能衰竭。生存患儿术后平均随访(52.4±28.6)个月,无中远期死亡,2例患儿因肺动脉再狭窄行第三次手术。多因素分析显示,合并主动脉弓手术及术后早期RVOT流速>3 m/s是ASO术后中远期发生残余的独立危险因素。结论ASO是治疗D-TGA/IVS、D-TGA/VSD及Taussig-Bing畸形的理想手术方式。合并主动脉弓手术及术后RVOT流速>3 m/s是ASO术后中远期发生残余的独立危险因素。
