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Anomaly cancellation and modularity, II:The E_8× E_8 case

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Science China Mathematics 2017年第6期60卷 985-994页

作者： HAN Fei LIU KeFeng zhang weiping Department of Mathematics National University of Singapore Department of Mathematics Capital Normal University Department of Mathematics University of California at Los Angeles Chern Institute of Mathematics & LPMC Nankai University

In this paper we show that both of the Green-Schwarz anomaly factorization formula for the gauge group E8 × E8 and the Ho^ava-Witten anomaly factorization formula for the gauge group E8 can be derived through modular forms of weight 14. This answers a question of Schwarz. We also establish generalizations of these factorization formulas and obtain a new Horava-Witten type factorization formula.

关键词： E8 bundle anomaly cancellation Eisenstein series modular form

自拟下乳方联合穴位治疗气血两虚型自然分娩产妇的临床研究

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中国计划生育学杂志 2024年第3期32卷 542-547页

作者：余雪张伟平高妍河北省沧州市中心医院 061000

目的:探讨自拟下乳方联合穴位治疗在气血两虚型自然分娩产妇中的应用效果。方法:选择2021年6月-2023年3月在本院分娩的132例气血两虚型自然分娩产妇为研究对象,按随机数字表法分为3组,每组44例。其中对采用自拟下乳方治疗为下乳方组,给... 详细信息

目的:探讨自拟下乳方联合穴位治疗在气血两虚型自然分娩产妇中的应用效果。方法:选择2021年6月-2023年3月在本院分娩的132例气血两虚型自然分娩产妇为研究对象,按随机数字表法分为3组,每组44例。其中对采用自拟下乳方治疗为下乳方组,给予穴位治疗为穴位组,采用自拟下乳方联合穴位治疗为联合组,比较3组治疗效果。结果:联合组总有效率(97.7%)显著高于下乳方组和穴位组(86.4%、79.5%,P0.05)。3组产妇均无明显不良反应发生。结论:自拟下乳方联合穴位治疗气血两虚型自然分娩产妇可有效改善临床症状,促进体内PRL分泌,加快泌乳,增加泌乳量,提高纯母乳喂养率。

关键词：自然分娩后产妇泌乳气血两虚证中药方剂穴位疗法

一种新型的CRM-Boost APFC控制方法

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电源学报 2024年第2期22卷 139-146页

作者：陈明城张卫平刘元超史本元张晓强北方工业大学节能照明电源集成与制造北京市重点实验室北京100144

介绍了Boost-APFC电路工作在临界导通模式下的优势。针对传统单相CRM-Boost APFC电压模式控制方法存在PI参数调试时间较长、调节效果较差、不稳定因素增加等不足,提出了一种有静态工作点的单相CRMBoost APFC电压模式控制方法,并通过PSI... 详细信息

介绍了Boost-APFC电路工作在临界导通模式下的优势。针对传统单相CRM-Boost APFC电压模式控制方法存在PI参数调试时间较长、调节效果较差、不稳定因素增加等不足,提出了一种有静态工作点的单相CRMBoost APFC电压模式控制方法,并通过PSIM仿真验证了该方法的优点。针对新型交错控制方法存在PI参数调试时间较长、不稳定因素增加等不足和需要额外使用一个电压控制电流源的情况,提出了一种改进型两相交错并联CRM-Boost APFC电压模式控制方法,并且完成了PSIM仿真,功率因数高达99.96%。制作了一台4kW的两相交错并联CRM-Boost APFC实验样机,并进行了实验调试,功率因数达到了99.66%,效率为98.02%。

关键词： Boost-APFC 临界导通模式静态工作点两相交错并联

腹腔镜Lich-Gregoir术与开放Cohen术治疗儿童原发性膀胱输尿管反流的疗效分析

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临床小儿外科杂志 2024年第1期23卷 29-34页

作者：李宁张潍平田军李明磊宋宏程屈彦超国家儿童医学中心首都医科大学附属北京儿童医院泌尿外科，北京100045

目的探讨腹腔镜Lich-Gregoir术与开放Cohen术在儿童原发性膀胱输尿管反流(vesicoureteral reflux,VUR)治疗中的应用价值。方法本研究为回顾性研究,将2018年6月至2022年6月首都医科大学附属北京儿童医院接受手术治疗的150例原发性VUR且... 详细信息

目的探讨腹腔镜Lich-Gregoir术与开放Cohen术在儿童原发性膀胱输尿管反流(vesicoureteral reflux,VUR)治疗中的应用价值。方法本研究为回顾性研究,将2018年6月至2022年6月首都医科大学附属北京儿童医院接受手术治疗的150例原发性VUR且资料完整的患儿纳入研究。按照手术方式的不同分为腹腔镜Lich-Gregoir组(n=69)和开放Cohen组(n=81);根据VUR侧别的不同以及术中是否行输尿管裁剪,将腹腔镜Lich-Gregoir组进一步分为单侧未裁剪输尿管腹腔镜Lich-Gregoir组(A组,n=33)、双侧未裁剪输尿管腹腔镜Lich-Gregoir组(C组,n=16)、单侧裁剪输尿管腹腔镜Lich-Gregoir组(E组,n=12)、双侧裁剪一侧输尿管腹腔镜Lich-Gregoir组(G组,n=8),开放Cohen组进一步分为单侧未裁剪输尿管开放Cohen组(B组,n=30)、双侧未裁剪输尿管开放Cohen组(D组,n=20)、单侧裁剪输尿管开放Cohen组(F组,n=18)、双侧裁剪一侧输尿管开放Cohen组(H组,n=13)。将8个亚组配为4对(A组&B组/C组&D组/E组&F组/G组&H组),比较各组性别、年龄、症状、侧别、反流程度、术中以及术后情况。结果以上4对进行组内比较,每对当中的两组在性别、年龄、症状、侧别、反流程度方面差异均无统计学意义(P>0.05)。A组、B组的住院时间分别为(6.78±1.76)d和(10.43±1.25)d;C组、D组的住院时间分别为(7.12±2.02)d和(11.05±1.82)d;E组、F组的住院时间分别为(8.83±1.33)d和(11.11±1.27)d;G组、H组的住院时间分别为(8.62±1.59)d和(11.46±1.39)d;差异均有统计学意义(P<0.05)。A组、B组的手术时间分别为(78.90±12.54)min和(85.60±13.11)min;C组、D组的手术时间分别为(89.43±12.37)min和(99.55±15.14)min;差异均有统计学意义(P<0.05)。术后6~12个月复查VCUG,共9例出现高级别反流;其中腹腔镜Lich-Gregoir组7例,开放Cohen组2例;2例再次行腹腔镜Lich-Gregoir术,7例行开放Cohen手术,术后均恢复良好。结论腹腔镜Lich-Gregoir术和开放Cohen术均为治疗原发性VUR的有效方法。腹腔镜Lich-Gregoir术可以保持输尿管和膀胱的正常生理走行,同时缩短患儿住院时间。对于术中未裁剪输尿管者,腹腔镜Lich-Gregoir术可以缩短手术时间。

关键词：膀胱输尿管反流腹腔镜开放术式输尿管再植术

The MathematicalWork of V. K. Patodi

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Communications in Mathematics and Statistics 2014年第3期2卷 253-277页

作者： weiping zhang Chern Institute of Mathematics&LPMC Nankai UniversityTianjin 300071People’s Republic of China

We give a brief survey on aspects of the local index theory as developed from the mathematical works of *** is dedicated to the 70th anniversary of Patodi.

关键词： Survey Patodi Local index ηinvariant Analytic torsion

星状神经节阻滞在老年胃癌腹腔镜根治术麻醉中的应用效果

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中国社区医师 2024年第4期40卷 58-60页

作者：赵昆张卫平马宾济南市人民医院麻醉科山东济南271100 济南市第二妇幼保健院山东济南271100

目的:探讨星状神经节阻滞在老年胃癌腹腔镜根治术麻醉中的应用效果。方法:选取2019年6月—2020年6月于济南市人民医院和济南市第二妇幼保健院行腹腔镜根治术治疗的112例老年胃癌患者作为研究对象,以随机数字表法分为观察组和对照组,各5... 详细信息

目的:探讨星状神经节阻滞在老年胃癌腹腔镜根治术麻醉中的应用效果。方法:选取2019年6月—2020年6月于济南市人民医院和济南市第二妇幼保健院行腹腔镜根治术治疗的112例老年胃癌患者作为研究对象,以随机数字表法分为观察组和对照组,各56例。对照组在气管旁第6颈椎横突入路,注射0.9%氯化钠注射液10 mL,然后行全身麻醉。观察组经超声引导行星状神经节阻滞(SGB),然后行全身麻醉。比较两组麻醉效果。结果:气管插管前,两组心率和平均动脉压比较,差异无统计学意义(P>0.05);气管插管时、气管插管后3 min、拔管时,观察组心率和平均动脉压低于对照组,差异有统计学意义(P0.05);麻醉复苏后1 h、1 d、3 d、7 d,观察组MMSE评分高于对照组,差异有统计学意义(P<0.05)。结论:星状神经节阻滞在老年胃癌腹腔镜根治术麻醉中的应用效果较好,能够稳定患者术中生命体征,且术后认知功能恢复快。

关键词：星状神经节阻滞腹腔镜胃癌根治术认知功能

More Detailed Disturbance Measurement and Active Disturbance Rejection Altitude Control for a Flapping Wing Robot Under Internal and External Disturbances

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Journal of Bionic Engineering 2022年第6期19卷 1722-1735页

作者： Jiawang Mou weiping zhang Kexin Zheng Yao Wang Chaofeng Wu National Key Laboratory of Science and Technology on Micro/Nano Fabrication Shanghai Jiao Tong University800 Dongchuan RoadShanghai200240China Department of Micro/Nano Electronics School of Electronic Information and Electrical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China

With the goal of designing a biologically inspired robot that can hold a stable hover under internal and external *** designed a tailless Flapping-wing Micro Aerial Vehicle(FMAV)with onboard 3D velocity *** this way,the wind disturbance caused by the relative motion of the FMAV can be quantified in real time based on the established altitudinal dynamics *** the rest of the total disturbance,an active disturbance rejection controller is proposed to estimate and suppress those *** comparison with the traditional PID controller,this proposed approach has been *** results show that,in the hovering flight with the internal unmodeled dynamics,the root-mean-square of height controlled is only 2.53 *** with the different weights of loads mounting on the FMAV,the ascending trajectory of flights remains impressively *** the forward flight with the external disturbance,the root-mean-square error of height controlled is 2.78 *** the FMAV flies over a ladder introducing an abrupt external disturbance,the maximum overshoot is only half of that controlled by the PID *** our best knowledge,this is the first demonstration of FMAVs with the capability of sensing motion-generated wind disturbance onboard and handling the internal and external disturbances in hover flight.

关键词： Bionic robot Flapping wing 3D velocity measurement Disturbance estimation and rejection Altitude control

Bayesian Nonlinear Quantile Regression Approach for Longitudinal Ordinal Data

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Communications in Mathematics and Statistics 2019年第2期7卷 123-140页

作者： Hang Yang Zhuojian Chen weiping zhang Department of Statistics and Finance University of Science and Technology of ChinaHefeiChina

Longitudinal data with ordinal outcomes commonly arise in clinical and social studies,where the purpose of interest is usually quantile curves rather than a simple reference *** this paper we consider Bayesian nonlinear quantile regression for longitudinal ordinal data through a latent *** efficient Metropolis–Hastings within Gibbs algorithm was developed for model *** studies and a real data example are conducted to assess the performance of the proposed *** show that the proposed approach performs well.

关键词： Ordinal longitudinal data Bayesian approach Quantile regression MCMC Metropolis-Hastings algorithm

Assessment on contaminations in sediments of an intake and the inflow canals in Taihu Lake, China

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Frontiers of Environmental Science & Engineering 2015年第4期9卷 665-674页

作者： Xiaolong WANG Shiming DING Qi zhang weiping HU State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Linmology Chinese Academy of Sciences Nanjing 210008 China

As the second largest freshwater lake in China, Taihu Lake provides water supply to approximately 32 million inhabitants around the lake. However, dramatically increased pollution has threatened the safety of drinking water supply in recent years. In the present study, we investigated the contaminations of nutrients and heavy metals in the sediments of an intake and inflow canals in Gonghu Bay, Taihu Lake. Moreover, we also examined the impact of human activities on spatial distribution char- acteristics of contaminations. Our results showed that the intake presented relatively lower concentrations of phos- phorus and nitrogen compared with inflow canals. However, the concentrations of Cr, Ni, Cu, Zn and Pb in the sediments of the intake exceeded the lowest effect level （LEL） values, indicating a potential risk to drinking water resource. In addition, the concentrations of Ni in the sediments of Tianji Canal and Jinshu Canal exceeded the severe effect level （SEL） value. More importantly, the concentrations of Cu in the sediments of Tianji Canal exceeded three times of the SEL value. Multivariate statistical analysis confirmed that the domestic sewage primarily contributed to the nutrient accumulation, and the leakage of electronic trash dominated the enrichment of metals in the sediments. Taken together, more effort should be made to ensure the security of water resources in Taihu Lake, especially for the treatment of domestic sewage and industrial wastewater.

关键词： drinking water resource nutrients heavy metals sediments Taihu Lake