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Data-driven simultaneous vertex and energy reconstruction for large liquid scintillator detectors

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Nuclear Science and Techniques 2023年第6期34卷 103-113页

作者： Gui-Hong Huang Wei Jiang Liang-Jian Wen yi-fang wang Wu-Ming Luo School of Applied Physics and Materials Wuyi UniversityJiangmen529020China Institute of High Energy Physics Chinese Academy of SciencesBeijing100049China School of Physical Sciences University of Chinese Academy of ScienceBeijing100049China

High-precision vertex and energy reconstruction are crucial for large liquid scintillator detectors such as that at the Jiangmen Underground Neutrino Observatory(JUNO),especially for the determination of neutrino mass ordering by analyzing the energy spectrum of reactor *** paper presents a data-driven method to obtain a more realistic and accurate expected PMT response of positron events in JUNO and develops a simultaneous vertex and energy reconstruction method that combines the charge and time information of *** the JUNO detector,the impact of the vertex inaccuracy on the energy resolution is approximately 0.6%.

关键词： JUNO Liquid scintillator detector Neutrino experiment Vertex reconstruction Energy reconstruction

Reduced precision solution criteria for nonlinear model predictive control with the feasibility-perturbed sequential quadratic programming algorithm

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第11期12卷 919-931页

作者： Jiao-na WAN Zhi-jiang SHAO Ke-xin WAN Xue-yi fang Zhi-qiang wang Ji-xin QIAN State Key Lab of Industrial Control Technology Institute of Industrial Control Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China

We propose a novel kind of termination criteria, reduced precision solution (RPS) criteria, for solving optimal control problems (OCPs) in nonlinear model predictive control (NMPC), which should be solved quickly for new inputs to be applied in time. Computational delay, which may destroy the closed-loop stability, usually arises while non-convex and nonlinear OCPs are solved with differential equations as the constraints. Traditional termination criteria of optimization algorithms usually involve slow convergence in the solution procedure and waste computing resources. Considering the practical demand of solution precision, RPS criteria are developed to obtain good approximate solutions with less computational cost. These include some indices to judge the degree of convergence during the optimization procedure and can stop iterating in a timely way when there is no apparent improvement of the solution. To guarantee the feasibility of iterate for the solution procedure to be terminated early, the feasibility- perturbed sequential quadratic programming (FP-SQP) algorithm is used. Simulations on the reference tracking performance of a continuously stirred tank reactor (CSTR) show that the RPS criteria efficiently reduce computation time and the adverse effect of computational delay on closed-loop stability.

关键词： Nonlinear model predictive control (NMPC) Computational delay Termination criteria Continuously stirred tankreactor (CSTR)

Better surgical treatment method for hepatocellular carcinoma with portal vein tumor thrombus

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World Journal of Gastroenterology 2018年第40期24卷 4527-4535页

作者： Shu-You Peng Xu-An wang Cong-Yun Huang Jiang-Tao Li De-Fei Hong yi-fang wang Bin Xu Department of Hepatobiliary and Pancreatic Surgery The Second Affiliated Hospital of Zhejiang University School of Medicine Department of General Surgery Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine Department of General Surgery Yuebei People's Hospital Affiliated to Shantou University School of Medicine Department of Hepatobiliary and Pancreatic Surgery Sir Run Run Shaw Hospital Affiliated Hospital of Zhejiang University School of Medicine

Hepatocellular carcinoma(HCC) with portal vein tumor thrombus(PVTT) is a disease that is not uncommon, but the treatments vary drastically between Eastern and Western countries. In Europe and America, the first line of treatment is systemic therapy such as sorafenib and the surgical treatment is not a recommend option. While an increasing number of studies from China and Japan have suggested that surgical treatment results in better outcomes when compared to transcatheter arterial chemoembolization(TACE), sorafenib, or other nonsurgical treatments, and two classification systems, Japanese Vp classification and Chinese Cheng's classification, were very useful to guide the surgical treatment. We have also found that surgical treatment may be more effective, as we have performed surgical treatment for HCC-PVTT patients over a period of approximately 15 years and achieved good results with the longest surviving time being 13 years and onward. In this study, we review the efficacy and principles of current surgical treatments and introduce our new, more effective surgical technique named "thrombectomy first", which means the tumor thrombus in the main portal vein, the bifurcation or the contralateral portal vein should be removed prior to liver resection. Thus, compression and crushing of PVTT during the operation could be avoided and new intrahepatic metastases caused by tumor thrombus to the remnant liver minimized. The new technique is even beneficial to the prognosis of Cheng's classification Types Ⅲ and Ⅳ PVTT. The vital tips and tricks for the surgical approach are described.

关键词： Portal vein tumor thrombus Thrombectomy first Surgery Hepatocellular carcinoma

Formation of a three-dimensional bispyridyl based metal-organic architecture containing unique Ag...Ag （d^10-d^10） interactions

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Chinese Chemical Letters 2008年第5期19卷 604-606页

作者： Xiao Ling Guo Yun yin Niu Qing Li wang Ben Lai Wu Hong Yun Zhang Hong Wei Hou yi Han Ling fang wang Department of Chemistry Zhengzhou University Henan 450052 China

A novel co-ordination polymer based on IB metal thiocyanates, [Ag2（NCS）2（4,4＇-bipy）]. （1）（4,4＇-bipy = 4,4＇-bispyridine）, has been synthesized by the pre-assembly method and characterized by X-ray crystallography. The complex exists as a three- dimensional network consisting of （AgSCN）. undulating layers linked by 4,4＇-bipy bridges.

关键词： d^10-d^10 interaction Metal thiocyanates Crystal structure Supramolecular structure Molecular structure

新媒体对审计师意见决策影响研究——以新浪微博为例

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系统工程理论与实践 2017年第7期37卷 1805-1819页

作者：赵梅祝娜姚颐王芳南开大学商学院会计系天津300071 南开大学商学院信息资源管理系天津300071 南开大学商学院网络社会治理研究中心天津300071

近年来,网络舆情已经成为情报学、传播学等领域研究的热点主题,新媒体是推动网络舆情出现的主要力量.新媒体舆情的形成、演化、预警、治理策略的研究较多,但是新媒体信息对特定行业人群信息决策行为的作用机理及其影响程度的研究较少.... 详细信息

近年来,网络舆情已经成为情报学、传播学等领域研究的热点主题,新媒体是推动网络舆情出现的主要力量.新媒体舆情的形成、演化、预警、治理策略的研究较多,但是新媒体信息对特定行业人群信息决策行为的作用机理及其影响程度的研究较少.本文以新浪微博为例,利用Probit、Ordered Probit等回归模型实证分析了新媒体形成的网络舆情对审计意见决策的影响及其作用机理,以期了解和掌握新媒体对特定行业人群信息决策行为的影响,为新媒体治理和监管提供借鉴和支持.研究结果表明,审计师同时关注了新媒体发布的原创信息和转载的已有信息;新媒体发布和传播的公司负面信息越多,审计师越有可能对上市公司的年报出具非标准审计意见;新媒体负面信息缩短了公司违规被监管部门处罚的时间期限,在一定程度上增加了审计师面临的诉讼风险预期.

关键词：新媒体负面信息审计意见声誉诉讼风险

Effects of tetrandrine on calcium and potassium currents in isolated rat hepatocytes

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World Journal of Gastroenterology 2003年第1期9卷 134-136页

作者： Hong-yi Zhou fang wang Lan Cheng Li-ying Fu Ji Zhou Wei-Xing Yao Department of Pharmmacology,Tongji medical college of Huazhong university of science and technology,Wuhan 430030,Hubei Province,China Department of Pharmacology Tongji medical college of Huazhong university of science and technology Wuhan 430030 Hubei Province China. zhouhy518@***

AIM: To study the effects of tetrandrine (Tet) on calciumrelease-activated calcium current (ICRAC), delayed rectifierpotassium current (IK), and inward rectifier potassiumcurrents (IK1) in isolated rat ***: Hepatocytes of rat were isolated by usingperfusion method. Whole cell patch-clamp techniques wereused in our ***: The peak *** ICRAC was -508±115 pA(n＝15), its reversal potential of ICRAC was about 0 mV. At thepotential of -100 mV, Tet inhibited the peak amplitude ofICRAC from -521±95 pA to -338±85 pA (P＜0.01 vs control,n＝5), with the inhibitory rate of 35 % at 10 μmol/L andfrom -504±87 pA to -247±82 pA (P＜0.01 vscontrol, n＝5),with the inhibitory rate of 49 % at 100 μmol/L, withoutaffecting its reversal potential. The amplitude of ICRAC wasdependent on extracellular Ca2+ concentration. The peakamplitude of ICRAC was -205±105 pA (n＝3) in tyrode's solutionwith Ca2+ 1.8 mmol/L (P＜0.01 vs the peak amplitude ofICRAC in external solution with Ca2+ 10 mmol/L). Tet at theconcentration of 10 and 100 μmol/L did not markedly changethe peak amplitude of delayed rectifier potassium currentand inward rectifier potassium current (P＞0.05 vs control).CONCLUSION: Tet protects hepatocytes by inhibiting ICRAC,which is not related to I K and IK1.

关键词：粉防已碱钾离子电流钙离子电流肝实质细胞药理作用

Computational Approaches for Traditional Chinese Painting: From the “Six Principles of Painting” Perspective

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Journal of Computer Science & Technology 2024年第2期39卷 269-285页

作者：张玮张建伟黄锦畦王懿芳封颖超杰王璐玮陈为 State Key Laboratory of CAD&CG Zhejiang UniversityHangzhou 310058China Department of Computer Science and Engineering The Hong Kong University of Science and Technology Hong Kong 999077China Kellogg School of Management Northwestern UniversityEvanston 60208U.S.A Laboratory of Art and Archaeology Image Zhejiang UniversityHangzhou 310058China

Traditional Chinese painting(TCP)is an invaluable cultural heritage resource and a unique visual art *** recent years,there has been a growing emphasis on the digitalization of TCP for cultural preservation and *** resulting digital copies have enabled the advancement of computational methods for a structured and systematic understanding of *** explore this topic,we conduct an in-depth analysis of 94 pieces of *** examine the current use of computer technologies on TCP from three perspectives,based on numerous conversations with ***,in light of the“Six Principles of Painting”theory,we categorize the articles according to their research focus on artistic ***,we create a four-stage framework to illustrate the purposes of TCP ***,we summarize the popular computational techniques applied to *** work also provides insights into potential applications and prospects,with professional opinion.

关键词： traditional Chinese painting(TCP) digital humanities cultural heritage computer vision deep learning

Correlation between mumps and meteorological factors in Xiamen City,China:A modelling study

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Infectious Disease Modelling 2022年第2期7卷 127-137页

作者： Jie-feng Huang Ze-yu Zhao Wen-kui Lu Jia Rui Bin Deng Wei-kang Liu Tian-long Yang Zhuo-yang Li Pei-hua Li Chan Liu Li Luo Bin Zhao yi-fang wang Qun Li Ming-zhai wang Tianmu Chen State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics School of Public HealthXiamen UniversityXiamen CityFujian ProvinceChina Xiamen Center for Disease Control and Prevention Xiamen CityFujian ProvinceChina Xiang'an Hospital of Xiamen University Xiamen CityFujian ProvinceChina Public Health Emergency Center Chinese Center for Disease Control and PreventionChangping DistrictBeijing CityChina

Objective:Mumps is a seasonal infectious disease,always occurring in winter and *** this study,we aim to analyze its epidemiological characteristics,transmissibility,and its correlation with meteorological ***:A seasonal Susceptiblee Exposede Infectious/Asymptomatice Recovered model and a next-generation matrix method were applied to estimate the time-dependent reproduction number(Rt).Results:The seasonal double peak of annual incidence was mainly in May to July and November to *** was high transmission at the median of Rt¼1.091(ranged:0 to 4.393).Rt was seasonally distributed mainly from February to April and from September to *** were found between temperature(Pearson correlation coefficient[r]ranged:from 0.101 to 0.115),average relative humidity(r¼0.070),average local pressure(r¼-0.066),and the number of new *** addition,average local pressure(r¼0.188),average wind speed(r¼0.111),air temperature(r ranged:-0.128 to-0.150),average relative humidity(r¼-0.203)and sunshine duration(r¼-0.075)were all correlated with ***:A relatively high level of transmissibility has been found in Xiamen City,leading to a continuous epidemic of *** factors,especially air temperature and relative humidity,may be more closely associated with mumps than other factors.

关键词： Mumps Transmissibility Meteorological factors Correlation Time-dependent reproduction number

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流化床气化炉带出细粉非机械返料机构研究

燃料化学学报 2004年第3期32卷 329-334页

作者：白树华王志杰房倚天王洋中国科学院山西煤炭化学研究所山西太原030001

对非机械返料机构(流动密封阀式)在流化床气化炉上的应用进行了研究。结果表明,流动密封阀式返料机构同样可以在流化床气化炉上应用;在返料室截面积、供料室截面积、水平孔口面积比为1∶1∶0.5时,通过流化风、松动风或侧吹风的组合充气... 详细信息

对非机械返料机构(流动密封阀式)在流化床气化炉上的应用进行了研究。结果表明,流动密封阀式返料机构同样可以在流化床气化炉上应用;在返料室截面积、供料室截面积、水平孔口面积比为1∶1∶0.5时,通过流化风、松动风或侧吹风的组合充气获得了良好的开启、运行及调节性能;同时考察了压力对返料机构运行的影响;最后得到了适合流化床气化炉非机械返料机构操作的经验公式,试验值和计算值符合较好。对改进流化床气化炉循环返料系统和提高气化炉碳转化率提供了理论指导和设计参考。

关键词：流化床气化炉非机械返料机构经验公式