In the analysis of high-rise building, traditional displacement-based plane elements are often used to get the in-plane internal forces of the shear walls by stress integration. Limited by the singular problem produce...In the analysis of high-rise building, traditional displacement-based plane elements are often used to get the in-plane internal forces of the shear walls by stress integration. Limited by the singular problem produced by wall holes and the loss of precision induced by using differential method to derive strains, the displacement-based elements cannot always present accuracy enough for design. In this paper, the hybrid post-processing procedure based on the Hellinger-Reissner variational principle is used for improving the stress precision of two quadrilateral plane elements. In order to find the best stress field, three different forms are assumed for the displacement-based plane elements and with drilling DOF. Numerical results show that by using the proposed method, the accuracy of stress solutions of these two displacement-based plane elements can be improved.展开更多
Dezert-Smarandache（DSm） theory, a new information fusion theory, is widely applied in image processing, multiple targets tracking identification, and other areas for its excellent processing ability of imperfect inf...Dezert-Smarandache（DSm） theory, a new information fusion theory, is widely applied in image processing, multiple targets tracking identification, and other areas for its excellent processing ability of imperfect information. However, earlier research on DSm theory mainly focused on one sort of questions. An evidence fusion procedure is proposed based on the hybrid DSm model to compensate for a lack of research on the entire information procedure of DSm theory. This paper analyzes the evidence fusion procedure, as well as correlative node input and output information. Key steps and detailed procedures of evidence fusion are also discussed. Finally, an experiment illustrates the efficiency of the proposed evidence fusion procedure.展开更多
Form 2008 to 2009, four patients with complex thoracic aortic disease, including aortic aneurysms and dissections, were successfully treated in our department with a new treatment approach:hybrid procedure.Combined op...Form 2008 to 2009, four patients with complex thoracic aortic disease, including aortic aneurysms and dissections, were successfully treated in our department with a new treatment approach:hybrid procedure.Combined open surgery and endovascular repair were performed in these patients without deep hypothermia or circulatory arrest.Compared to those who underwent traditional open surgery in the same period, time of mechanical ventilation and ICU stay was decreased in these four patients.All of them were discharged soon after operation without postoperative complications or death.The result suggests that this new approach could be an option for thoracic aortic disease, but long-term and large-population studies are still required to demonstrate the safety and validity.展开更多
Aiming at the flexible flowshop group scheduling problem,taking sequence dependent setup time and machine skipping into account, a mathematical model for minimizing makespan is established,and a hybrid differential ev...Aiming at the flexible flowshop group scheduling problem,taking sequence dependent setup time and machine skipping into account, a mathematical model for minimizing makespan is established,and a hybrid differential evolution( HDE) algorithm based on greedy constructive procedure( GCP) is proposed,which combines differential evolution( DE) with tabu search( TS). DE is applied to generating the elite individuals of population,while TS is used for finding the optimal value by making perturbation in selected elite individuals. A lower bounding technique is developed to evaluate the quality of proposed algorithm. Experimental results verify the effectiveness and feasibility of proposed algorithm.展开更多
Objective The lack of clarity regarding the application performance of a hybrid operating room(HOR)and the uncertainty of surgical scheduling often lead to its inefficient application.This study aimed to review the cl...Objective The lack of clarity regarding the application performance of a hybrid operating room(HOR)and the uncertainty of surgical scheduling often lead to its inefficient application.This study aimed to review the clinical application of our neurosurgical HOR and propose a scale to score cases clearly.Methods We reviewed the operating procedures and duration of stay in 1865 HOR cases.The actual procedures of each case were summarized into 5 application types,and numerical assignment was used to distinguish the dependence of each type on our HOR:surgical procedures combined with interventional procedures(4 points,the highest dependence),surgical procedures combined with imaging procedures(3 points),interventional procedures(2 points),imaging procedures(1 point),and surgical procedures(0 points,the lowest dependence).Results A novel scale that could score 1865 cases into those 5 grades was developed.The percentages by grade were as follows:4 points,4.24%;3 points,4.88%;2 points,20.75%;1 point,69.38%;and 0 points,0.75%.The cumulative usage time was 4241.9 h,the duration of which was as follows:4 points,16.17%;3 points,15.50%;2 points,31.32%;1 point,35.62%;and 0 points,1.39%.Conclusions The HOR serves as a multifunctional room to treat neurosurgical diseases.The scale helps to quickly prioritize cases that rely more on HOR,providing guidelines for surgical scheduling.Although our HOR is unsuitable for emergency cases,it clearly shows the application performance of our HOR to provide a reference for promoting its efficient application.展开更多
Objective In patients with pulmonary atresia and intact ventricular septum (PAIVS) without right ventricular-dependent coronaries,catheter techniques including the use of a sniff wire,lasers,and radiofrequency have be...Objective In patients with pulmonary atresia and intact ventricular septum (PAIVS) without right ventricular-dependent coronaries,catheter techniques including the use of a sniff wire,lasers,and radiofrequency have been the most widely used as initial therapy. However,percutaneous perforation and balloon valvuloplasty were associated with higher rate of procedural failure and展开更多
非外科门体分流术是指通过单纯介入技术或介入与外科技术相结合方式完成的门体分流术。经颈静脉肝内门体分流术(TIPS)已成为肝硬化门静脉高压重要治疗手段。随着介入技术不断发展,在经典TIPS基础上涌现出许多新型非外科门体分流术式,与...非外科门体分流术是指通过单纯介入技术或介入与外科技术相结合方式完成的门体分流术。经颈静脉肝内门体分流术(TIPS)已成为肝硬化门静脉高压重要治疗手段。随着介入技术不断发展,在经典TIPS基础上涌现出许多新型非外科门体分流术式,与之相应的手术名称及英文缩写也层出不穷。然而,许多手术名称未能准确反映其技术特点,且存在大量重名现象。该共识旨在回顾和分析非外科门体分流术现有名称及其技术特点,并基于各术式技术种类(type of technology,T)、穿刺途径(approach,A)和分流道位置(location of shunt,L)提出TAL分类命名法。该命名法有助于厘清现有非外科门体分流术之间关系,促进学术交流。展开更多
主动脉A型夹层(type A aortic dissection,TAAD)是一种起病急骤、致死率极高的心血管急症,病理机制为主动脉中膜的变性及长期高血压对管壁的慢性损伤导致主动脉内膜破裂,血液进入中膜层形成真假腔结构。研究表明TAAD在发病48 h内未及时...主动脉A型夹层(type A aortic dissection,TAAD)是一种起病急骤、致死率极高的心血管急症,病理机制为主动脉中膜的变性及长期高血压对管壁的慢性损伤导致主动脉内膜破裂,血液进入中膜层形成真假腔结构。研究表明TAAD在发病48 h内未及时进行手术干预,死亡率高达50%,因此早期诊断并及时有效的手术治疗是挽救TAAD患者生命的关键。心血管专科医生需结合患者临床表现、体格检查及影像学结果进行综合评估,以制定精准的治疗方案。Bentall/David手术与弓部手术联合等治疗策略,不仅可挽救患者生命,还可有效减少术后并发症。本文系统阐述了TAAD的诊疗策略,涵盖诊断方法及手术方式,依据患者病情制定个性化手术方案,期望为临床诊断及手术策略选择提供理论指导。展开更多
Critical aortic valve stenosis in newborns is the cause of a severe clinical condition with the onset of symptoms during first hours after birth.We present a clinical case of a successful surgical correction of a crit...Critical aortic valve stenosis in newborns is the cause of a severe clinical condition with the onset of symptoms during first hours after birth.We present a clinical case of a successful surgical correction of a critical aortic stenosis using a hybrid method applied in a newborn during the first day of life.The infant was diagnosed with a hypoplastic left heart complex with an intact atrial septum(aortic and mitral valves stenosis variant),that led to the cardiogenic shock and acute pulmonary edema.The procedure included bilateral banding of the pulmonary artery branches and atrioseptostomy with stenting of the interatrial septum.The surgery was performed through a median sternotomy.展开更多
Objective: The present study was conceived to analyze the clinical benefit of hybrid interventions with surgical common femoral artery (CFA) reconstruction coupled to superficial femoral/popliteal endovascular recanal...Objective: The present study was conceived to analyze the clinical benefit of hybrid interventions with surgical common femoral artery (CFA) reconstruction coupled to superficial femoral/popliteal endovascular recanalization for severe infrainguinal multilevel occlusive disease in high-risk ASA Class 3 - 4 patients. Material and Methods: From August 2008 until May 2015, a series of 143 hybrid infrainguinal interventions in 124 ASA Class 3 - 4 patients were performed in our department for Rutherford category 2 - 6 ischemic presentations. Patient demographics, specific risk factors, technical characteristics and patency results were retrospectively examined during a mean 36.8 months of follow-up. In a majority of 94 limbs (65%), the endovascular stage of interventions focused on long (>15 cm) femoropopliteal occlusions in parallel to regular CFA surgical revascularization. Two or three runoff tibial trunks were evinced in 84% cases, while one or none permeable vessel was found in 23 (16%) limbs. Results: Inasmuch surgical approach was successful in all cases, the endovascular stage was technically profitable in 134 (93%) cases. The ABI posto-peratively improved (>1.5) in 73% of cases, while clinical presentation gained at least one Rutherford category in 89% limbs. The mean hospital stay was 6.1 days (3 - 12 days) whereas the 30-day mortality rate in this homogeneous “high-risk” group of patients was 3.2%. Global risk factors alike age (>70 years/p = 0.0005), smoking ((p = 0.0170) and female gender (p = 0.0111), together with CTOs length (>15 cm/(p = 0.0470), severe calcifications (p = 0.0001), poor tibial runoff (p = 0.0001), TASC “C” and “D” lesions (p = 0.360 and (p = 0.0394), the stent number ((n = 3) and length (>6 cm) ((p = 0.0039 and (p = 0.0003) and the initial ABI scoring ((p = 0.0051) showed statistical negative influence on primary patency. Conclusion: Hybrid infrainguinal revascularization may afford useful results in selected ASA “high risk” patients, owning low invasiveness, reproducibility and acceptable patency in return to punctual postoperative surveillance.展开更多
文摘In the analysis of high-rise building, traditional displacement-based plane elements are often used to get the in-plane internal forces of the shear walls by stress integration. Limited by the singular problem produced by wall holes and the loss of precision induced by using differential method to derive strains, the displacement-based elements cannot always present accuracy enough for design. In this paper, the hybrid post-processing procedure based on the Hellinger-Reissner variational principle is used for improving the stress precision of two quadrilateral plane elements. In order to find the best stress field, three different forms are assumed for the displacement-based plane elements and with drilling DOF. Numerical results show that by using the proposed method, the accuracy of stress solutions of these two displacement-based plane elements can be improved.
基金supported by the National Natural Science Foundation of China(61102168)the Military Innovation Foundation(X11QN106)
文摘Dezert-Smarandache（DSm） theory, a new information fusion theory, is widely applied in image processing, multiple targets tracking identification, and other areas for its excellent processing ability of imperfect information. However, earlier research on DSm theory mainly focused on one sort of questions. An evidence fusion procedure is proposed based on the hybrid DSm model to compensate for a lack of research on the entire information procedure of DSm theory. This paper analyzes the evidence fusion procedure, as well as correlative node input and output information. Key steps and detailed procedures of evidence fusion are also discussed. Finally, an experiment illustrates the efficiency of the proposed evidence fusion procedure.
基金supported by a grant form the Natural Sciences Foundation of Hubei Province,China (No.2008-CDB 207)
文摘Form 2008 to 2009, four patients with complex thoracic aortic disease, including aortic aneurysms and dissections, were successfully treated in our department with a new treatment approach:hybrid procedure.Combined open surgery and endovascular repair were performed in these patients without deep hypothermia or circulatory arrest.Compared to those who underwent traditional open surgery in the same period, time of mechanical ventilation and ICU stay was decreased in these four patients.All of them were discharged soon after operation without postoperative complications or death.The result suggests that this new approach could be an option for thoracic aortic disease, but long-term and large-population studies are still required to demonstrate the safety and validity.
基金Shanghai Municipal Natural Science Foundation of China(No.10ZR1431700)
文摘Aiming at the flexible flowshop group scheduling problem,taking sequence dependent setup time and machine skipping into account, a mathematical model for minimizing makespan is established,and a hybrid differential evolution( HDE) algorithm based on greedy constructive procedure( GCP) is proposed,which combines differential evolution( DE) with tabu search( TS). DE is applied to generating the elite individuals of population,while TS is used for finding the optimal value by making perturbation in selected elite individuals. A lower bounding technique is developed to evaluate the quality of proposed algorithm. Experimental results verify the effectiveness and feasibility of proposed algorithm.
基金supported by the Technology Innovation Special Major Project of Hubei Province(grant number 2022BCA003).
文摘Objective The lack of clarity regarding the application performance of a hybrid operating room(HOR)and the uncertainty of surgical scheduling often lead to its inefficient application.This study aimed to review the clinical application of our neurosurgical HOR and propose a scale to score cases clearly.Methods We reviewed the operating procedures and duration of stay in 1865 HOR cases.The actual procedures of each case were summarized into 5 application types,and numerical assignment was used to distinguish the dependence of each type on our HOR:surgical procedures combined with interventional procedures(4 points,the highest dependence),surgical procedures combined with imaging procedures(3 points),interventional procedures(2 points),imaging procedures(1 point),and surgical procedures(0 points,the lowest dependence).Results A novel scale that could score 1865 cases into those 5 grades was developed.The percentages by grade were as follows:4 points,4.24%;3 points,4.88%;2 points,20.75%;1 point,69.38%;and 0 points,0.75%.The cumulative usage time was 4241.9 h,the duration of which was as follows:4 points,16.17%;3 points,15.50%;2 points,31.32%;1 point,35.62%;and 0 points,1.39%.Conclusions The HOR serves as a multifunctional room to treat neurosurgical diseases.The scale helps to quickly prioritize cases that rely more on HOR,providing guidelines for surgical scheduling.Although our HOR is unsuitable for emergency cases,it clearly shows the application performance of our HOR to provide a reference for promoting its efficient application.
文摘Objective In patients with pulmonary atresia and intact ventricular septum (PAIVS) without right ventricular-dependent coronaries,catheter techniques including the use of a sniff wire,lasers,and radiofrequency have been the most widely used as initial therapy. However,percutaneous perforation and balloon valvuloplasty were associated with higher rate of procedural failure and
文摘非外科门体分流术是指通过单纯介入技术或介入与外科技术相结合方式完成的门体分流术。经颈静脉肝内门体分流术(TIPS)已成为肝硬化门静脉高压重要治疗手段。随着介入技术不断发展,在经典TIPS基础上涌现出许多新型非外科门体分流术式,与之相应的手术名称及英文缩写也层出不穷。然而,许多手术名称未能准确反映其技术特点,且存在大量重名现象。该共识旨在回顾和分析非外科门体分流术现有名称及其技术特点,并基于各术式技术种类(type of technology,T)、穿刺途径(approach,A)和分流道位置(location of shunt,L)提出TAL分类命名法。该命名法有助于厘清现有非外科门体分流术之间关系,促进学术交流。
文摘主动脉A型夹层(type A aortic dissection,TAAD)是一种起病急骤、致死率极高的心血管急症,病理机制为主动脉中膜的变性及长期高血压对管壁的慢性损伤导致主动脉内膜破裂,血液进入中膜层形成真假腔结构。研究表明TAAD在发病48 h内未及时进行手术干预,死亡率高达50%,因此早期诊断并及时有效的手术治疗是挽救TAAD患者生命的关键。心血管专科医生需结合患者临床表现、体格检查及影像学结果进行综合评估,以制定精准的治疗方案。Bentall/David手术与弓部手术联合等治疗策略,不仅可挽救患者生命,还可有效减少术后并发症。本文系统阐述了TAAD的诊疗策略,涵盖诊断方法及手术方式,依据患者病情制定个性化手术方案,期望为临床诊断及手术策略选择提供理论指导。
文摘Critical aortic valve stenosis in newborns is the cause of a severe clinical condition with the onset of symptoms during first hours after birth.We present a clinical case of a successful surgical correction of a critical aortic stenosis using a hybrid method applied in a newborn during the first day of life.The infant was diagnosed with a hypoplastic left heart complex with an intact atrial septum(aortic and mitral valves stenosis variant),that led to the cardiogenic shock and acute pulmonary edema.The procedure included bilateral banding of the pulmonary artery branches and atrioseptostomy with stenting of the interatrial septum.The surgery was performed through a median sternotomy.
文摘Objective: The present study was conceived to analyze the clinical benefit of hybrid interventions with surgical common femoral artery (CFA) reconstruction coupled to superficial femoral/popliteal endovascular recanalization for severe infrainguinal multilevel occlusive disease in high-risk ASA Class 3 - 4 patients. Material and Methods: From August 2008 until May 2015, a series of 143 hybrid infrainguinal interventions in 124 ASA Class 3 - 4 patients were performed in our department for Rutherford category 2 - 6 ischemic presentations. Patient demographics, specific risk factors, technical characteristics and patency results were retrospectively examined during a mean 36.8 months of follow-up. In a majority of 94 limbs (65%), the endovascular stage of interventions focused on long (>15 cm) femoropopliteal occlusions in parallel to regular CFA surgical revascularization. Two or three runoff tibial trunks were evinced in 84% cases, while one or none permeable vessel was found in 23 (16%) limbs. Results: Inasmuch surgical approach was successful in all cases, the endovascular stage was technically profitable in 134 (93%) cases. The ABI posto-peratively improved (>1.5) in 73% of cases, while clinical presentation gained at least one Rutherford category in 89% limbs. The mean hospital stay was 6.1 days (3 - 12 days) whereas the 30-day mortality rate in this homogeneous “high-risk” group of patients was 3.2%. Global risk factors alike age (>70 years/p = 0.0005), smoking ((p = 0.0170) and female gender (p = 0.0111), together with CTOs length (>15 cm/(p = 0.0470), severe calcifications (p = 0.0001), poor tibial runoff (p = 0.0001), TASC “C” and “D” lesions (p = 0.360 and (p = 0.0394), the stent number ((n = 3) and length (>6 cm) ((p = 0.0039 and (p = 0.0003) and the initial ABI scoring ((p = 0.0051) showed statistical negative influence on primary patency. Conclusion: Hybrid infrainguinal revascularization may afford useful results in selected ASA “high risk” patients, owning low invasiveness, reproducibility and acceptable patency in return to punctual postoperative surveillance.
