精确的锂离子电池荷电状态(state of charge,SOC)估计对于电池管理系统至关重要。模型参数辨识是SOC估计的前提,也是影响其估计精度的关键因素。为了有效避免噪声对参数辨识的影响,采用偏差补偿递推最小二乘法(BCRLS)进行在线参数辨识...精确的锂离子电池荷电状态(state of charge,SOC)估计对于电池管理系统至关重要。模型参数辨识是SOC估计的前提,也是影响其估计精度的关键因素。为了有效避免噪声对参数辨识的影响,采用偏差补偿递推最小二乘法(BCRLS)进行在线参数辨识。在此基础上,采用自适应容积卡尔曼滤波(ACKF)算法估计电池SOC,对系统噪声进行实时更新以提高估计精度。此外,对于计算过程中由于协方差矩阵失去正定性而出现平方根无法分解的问题,利用奇异值分解的方法代替Cholesky分解,以提高数值计算的稳定性。最后将BCRLS与ACKF相结合以实现模型参数和SOC的联合估计,并在不同工况和初始值不精确的情况下进行算法验证,结果表明本文所提算法具有较高的精度,平均绝对误差在2%以内。展开更多
目的总结国内外乳腺癌相关淋巴水肿患者报告结局的特异性评估工具,分析工具的内容及特征,为工具的选择及开发提供参考。方法采用范围综述的研究方法和步骤,以PRISMA-ScR报告清单为指导,全面检索PubMed、Web of Science、Cochrane Librar...目的总结国内外乳腺癌相关淋巴水肿患者报告结局的特异性评估工具,分析工具的内容及特征,为工具的选择及开发提供参考。方法采用范围综述的研究方法和步骤,以PRISMA-ScR报告清单为指导,全面检索PubMed、Web of Science、Cochrane Library、Embase、OpenGrey、万方、维普和中国知网数据库。提取工具的基本特征(工具名称、构建基础、构建方法、维度内容、信效度及工具特点等)。结果共纳入26篇文献,含15种工具,可分为5大类即症状体验、生活质量、疾病感知、自护能力和患者纺织品装备满意度。结论乳腺癌相关淋巴水肿患者报告结局特异性评估工具正处于起步阶段,部分工具仍需进一步研究与验证,临床选择工具时需从多维考虑,工具的开发应遵照相关标准,提高工具的准确性。展开更多
对于带未知模型参数和噪声方差的多传感器系统,基于分量按标量加权最优融合准则,提出了自校正解耦融合Kalman滤波器,并应用动态误差系统分析(Dynamic error system analysis,DESA)方法证明了它的收敛性.作为在信号处理中的应用,对带有...对于带未知模型参数和噪声方差的多传感器系统,基于分量按标量加权最优融合准则,提出了自校正解耦融合Kalman滤波器,并应用动态误差系统分析(Dynamic error system analysis,DESA)方法证明了它的收敛性.作为在信号处理中的应用,对带有色和白色观测噪声的多传感器多维自回归(Autoregressive,AR)信号,分别提出了AR信号模型参数估计的多维和多重偏差补偿递推最小二乘(Bias compensated recursive least-squares,BCRLS)算法,证明了两种算法的等价性,并且用DESA方法证明了它们的收敛性.在此基础上提出了AR信号的自校正融合Kalman滤波器,它具有渐近最优性.仿真例子说明了其有效性.展开更多
Objective:To evaluate the effectiveness of bloodletting puncture and cupping in relieving breast cancer-related lymphedema.Methods:We conducted a non-randomized controlled study at the Galactophore Department of the 3...Objective:To evaluate the effectiveness of bloodletting puncture and cupping in relieving breast cancer-related lymphedema.Methods:We conducted a non-randomized controlled study at the Galactophore Department of the 3rd Affiliated Hospital of Beijing University of Chinese Medicine from March 2013 to December 2014.Seventy-five patients undergoing treatment for breast cancer-related lymphedema were divided into two groups in accordance with the patients' treatment choices:the treatment group (n =50) underwent bloodletting puncture and cupping every 5 days for 15 min/session (one session per day) combined with exercise training once a day for 30 minutes;the control group (n =25) underwent the same exercise training alone.Evaluation indexes were measured before and after treatment;these included arm circumference (at the wrist crease,10 cm distal to the wrist crease,the elbow crease,and 10 cm distal to the elbow crease)and visual analogue scale (VAS) score for pain.The safety of the treatment was also evaluated.Results:The treatment period was 50 days for all 75 patients.At the end of the treatment period,the mean reduction in arm circumference was 1.21 (0.65) cm the treatment group,and 0.58 (0.78) cm in the control group.Compared with the control group,the treatment group had a significantly greater reduction in arm circumference (P =.03) and a significantly lower VAS score for pain (P =.01).No patient in either group experienced any adverse events.Conclusion:Bloodletting puncture and cupping effectively reduces arm circumference and relieves upper limb pain in patients with breast cancer-related lymphedema.Our results provide sufficient basis for exploring cupping as long-term therapy for managing breast cancer-related lymphedema.展开更多
With the remarkable advancement of microsurgery,surgical treatment for lymphedema has been increasing,and its good results are well established.However,surgical treatment for advanced-stage lymphedema is still a chall...With the remarkable advancement of microsurgery,surgical treatment for lymphedema has been increasing,and its good results are well established.However,surgical treatment for advanced-stage lymphedema is still a challenging task.We reviewed several methods of combining lymphovenous anastomosis(LVA)and vascularized lymph node transfer(VLNT)in breast cancer-related lymphedema(BCRL)patients.Representative VLNT flap options for BCRL patients include the omental flap,superficial circumflex iliac perforator(SCIP)flap,and deep inferior epigastric artery(DIEA)flap combined with inguinal lymph nodes performed simultaneously with breast reconstruction.The surgical outcome,technical details,and donor site morbidities of each surgical option were reviewed.While all three options show significant surgical benefits,each has its clear advantages and disadvantages.The decision on the surgical method may vary according to the needs of each patient and the clinical situation.展开更多
Aim:Lymphaticovenous anastomosis(LVA)is the mainstay for treating breast cancer-related lymphedema(BCRL).Preoperative ultrasonography is useful to assess the locations and characteristics of lymphatics and veins to im...Aim:Lymphaticovenous anastomosis(LVA)is the mainstay for treating breast cancer-related lymphedema(BCRL).Preoperative ultrasonography is useful to assess the locations and characteristics of lymphatics and veins to improve LVA success remarkably even in cases of advanced BCRL.Aim:The aim of the study was to describe the use of ultrasonography to reliably map suitable lymphatics and veins and successfully perform LVA surgery in cases of advanced BCRL.Method:This retrospective cohort study included 41 cases of BCRL who underwent LVA surgery using preoperative ultrasound to map and characterize lymphatics and veins.Cases were analyzed for the following:(1)whether preoperative ultrasonographic detection of both lymphatics and veins correlate to actual intraoperative findings and(2)improvement in mean limb circumference measurements at 1 and 3 months of follow-up in this patient cohort.Results:For 155 LVA incisions,212 LVA procedures were performed.Among them,133(62.7%)lymphatics and 196(92.4%)anti-reflux veins were successfully detected and characterized on preoperative sonography.Mean preoperative circumference at the wrist,10cm below elbow,elbow,and 10cm above elbow were 18.86 cm,27.79 cm,29.75 cm,and 33.77 cm,respectively.The mean measurements improved at 1 month correspondingly to 17.14 cm,24.86 cm,26.91 cm,and 30.50 cm(9.12%,10.54%,9.54%,9.70%improvement,respectively),and at 3 months to 16.59 cm,24.28 cm,26.55 cm,and 30.05 cm(12.02%,12.63%,10.73%,11.02%improvement,respectively).For each individual patient,their four measured circumferences were also added to obtain the Total Circumference(TC).The TC ranged from 89-135 cm(mean 109.46 cm)preoperatively,83.5-129.5 cm(mean 98.74 cm)1-month post-op,and 80.5-128 cm(mean 96.55 cm)3 months post-op.Compared to the preoperative value,each patient had a TC decrease of 2.79%-20.35%(mean 9.80%)at 1-month post-op and 4.39-28.30%(mean 11.80%)at 3 months post-op.These differences were all statistically significant(P<0.0001).Conclusion:Preoperative ultrasonography is a useful adjunct to detect lymphatic vessels and anti-reflux veins,thereby increasing the chances of successfully performing LVA surgery even in cases of advanced upper limb lymphedema.It can contribute to long-lasting outcomes.展开更多
文摘精确的锂离子电池荷电状态(state of charge,SOC)估计对于电池管理系统至关重要。模型参数辨识是SOC估计的前提,也是影响其估计精度的关键因素。为了有效避免噪声对参数辨识的影响,采用偏差补偿递推最小二乘法(BCRLS)进行在线参数辨识。在此基础上,采用自适应容积卡尔曼滤波(ACKF)算法估计电池SOC,对系统噪声进行实时更新以提高估计精度。此外,对于计算过程中由于协方差矩阵失去正定性而出现平方根无法分解的问题,利用奇异值分解的方法代替Cholesky分解,以提高数值计算的稳定性。最后将BCRLS与ACKF相结合以实现模型参数和SOC的联合估计,并在不同工况和初始值不精确的情况下进行算法验证,结果表明本文所提算法具有较高的精度,平均绝对误差在2%以内。
文摘目的总结国内外乳腺癌相关淋巴水肿患者报告结局的特异性评估工具,分析工具的内容及特征,为工具的选择及开发提供参考。方法采用范围综述的研究方法和步骤,以PRISMA-ScR报告清单为指导,全面检索PubMed、Web of Science、Cochrane Library、Embase、OpenGrey、万方、维普和中国知网数据库。提取工具的基本特征(工具名称、构建基础、构建方法、维度内容、信效度及工具特点等)。结果共纳入26篇文献,含15种工具,可分为5大类即症状体验、生活质量、疾病感知、自护能力和患者纺织品装备满意度。结论乳腺癌相关淋巴水肿患者报告结局特异性评估工具正处于起步阶段,部分工具仍需进一步研究与验证,临床选择工具时需从多维考虑,工具的开发应遵照相关标准,提高工具的准确性。
文摘Objective:To evaluate the effectiveness of bloodletting puncture and cupping in relieving breast cancer-related lymphedema.Methods:We conducted a non-randomized controlled study at the Galactophore Department of the 3rd Affiliated Hospital of Beijing University of Chinese Medicine from March 2013 to December 2014.Seventy-five patients undergoing treatment for breast cancer-related lymphedema were divided into two groups in accordance with the patients' treatment choices:the treatment group (n =50) underwent bloodletting puncture and cupping every 5 days for 15 min/session (one session per day) combined with exercise training once a day for 30 minutes;the control group (n =25) underwent the same exercise training alone.Evaluation indexes were measured before and after treatment;these included arm circumference (at the wrist crease,10 cm distal to the wrist crease,the elbow crease,and 10 cm distal to the elbow crease)and visual analogue scale (VAS) score for pain.The safety of the treatment was also evaluated.Results:The treatment period was 50 days for all 75 patients.At the end of the treatment period,the mean reduction in arm circumference was 1.21 (0.65) cm the treatment group,and 0.58 (0.78) cm in the control group.Compared with the control group,the treatment group had a significantly greater reduction in arm circumference (P =.03) and a significantly lower VAS score for pain (P =.01).No patient in either group experienced any adverse events.Conclusion:Bloodletting puncture and cupping effectively reduces arm circumference and relieves upper limb pain in patients with breast cancer-related lymphedema.Our results provide sufficient basis for exploring cupping as long-term therapy for managing breast cancer-related lymphedema.
文摘With the remarkable advancement of microsurgery,surgical treatment for lymphedema has been increasing,and its good results are well established.However,surgical treatment for advanced-stage lymphedema is still a challenging task.We reviewed several methods of combining lymphovenous anastomosis(LVA)and vascularized lymph node transfer(VLNT)in breast cancer-related lymphedema(BCRL)patients.Representative VLNT flap options for BCRL patients include the omental flap,superficial circumflex iliac perforator(SCIP)flap,and deep inferior epigastric artery(DIEA)flap combined with inguinal lymph nodes performed simultaneously with breast reconstruction.The surgical outcome,technical details,and donor site morbidities of each surgical option were reviewed.While all three options show significant surgical benefits,each has its clear advantages and disadvantages.The decision on the surgical method may vary according to the needs of each patient and the clinical situation.
文摘Aim:Lymphaticovenous anastomosis(LVA)is the mainstay for treating breast cancer-related lymphedema(BCRL).Preoperative ultrasonography is useful to assess the locations and characteristics of lymphatics and veins to improve LVA success remarkably even in cases of advanced BCRL.Aim:The aim of the study was to describe the use of ultrasonography to reliably map suitable lymphatics and veins and successfully perform LVA surgery in cases of advanced BCRL.Method:This retrospective cohort study included 41 cases of BCRL who underwent LVA surgery using preoperative ultrasound to map and characterize lymphatics and veins.Cases were analyzed for the following:(1)whether preoperative ultrasonographic detection of both lymphatics and veins correlate to actual intraoperative findings and(2)improvement in mean limb circumference measurements at 1 and 3 months of follow-up in this patient cohort.Results:For 155 LVA incisions,212 LVA procedures were performed.Among them,133(62.7%)lymphatics and 196(92.4%)anti-reflux veins were successfully detected and characterized on preoperative sonography.Mean preoperative circumference at the wrist,10cm below elbow,elbow,and 10cm above elbow were 18.86 cm,27.79 cm,29.75 cm,and 33.77 cm,respectively.The mean measurements improved at 1 month correspondingly to 17.14 cm,24.86 cm,26.91 cm,and 30.50 cm(9.12%,10.54%,9.54%,9.70%improvement,respectively),and at 3 months to 16.59 cm,24.28 cm,26.55 cm,and 30.05 cm(12.02%,12.63%,10.73%,11.02%improvement,respectively).For each individual patient,their four measured circumferences were also added to obtain the Total Circumference(TC).The TC ranged from 89-135 cm(mean 109.46 cm)preoperatively,83.5-129.5 cm(mean 98.74 cm)1-month post-op,and 80.5-128 cm(mean 96.55 cm)3 months post-op.Compared to the preoperative value,each patient had a TC decrease of 2.79%-20.35%(mean 9.80%)at 1-month post-op and 4.39-28.30%(mean 11.80%)at 3 months post-op.These differences were all statistically significant(P<0.0001).Conclusion:Preoperative ultrasonography is a useful adjunct to detect lymphatic vessels and anti-reflux veins,thereby increasing the chances of successfully performing LVA surgery even in cases of advanced upper limb lymphedema.It can contribute to long-lasting outcomes.
