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A Unit Root Test for an AR(1)Process with AR Errors by Using Random Weighted Bootstrap

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Acta Mathematica Sinica,English Series 2023年第9期39卷 1834-1854页

作者： Xiao Hui Liu Ya Wen Fan Yu Zi Liu shi hua luo School of Statistics and Data Science Jiangxi University of Finance and EconomicsNanchang330013P.R.China Key Laboratory of Data Science in Finance and Economics Jiangxi University of Finance and EconomicsNanchang330013P.R.China

A great deal of economic problems are related to detecting the stability of time series data,where the main interest is in the unit root *** this paper,we consider the unit root testing problem with errors being long-memory processes with the LARCH structure.A new test statistic is developed by using the random weighted bootstrap *** turns out that the proposed statistic has a chisquared distribution asymptotically regardless of the process being stationary or nonst at ionary,and with or without an intercept *** simulation results show that the statistic has a desired finite sample performance in terms of both size and power.A real data application is also given relying on the inflation rate data of 17 countries.

关键词： Autoregressive model random weighted bootstrap autoregressive errors unit root test

Safety and efficacy of transjugular intrahepatic portosystemic shunt combined with palliative treatment in patients with hepatocellular carcinoma

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World Journal of Clinical Cases 2019年第13期7卷 1599-1610页

作者： shi-hua luo Jian-Guo Chu He huang Ke-Chun Yao Department of Radiology Zhongnan Hospital of Wuhan University Wuhan 430071 Hubei Province China Department of Radiology Air Force Medical Center of PLA Beijing 100142 China Department of Ultrasound Air Force Medical Center of PLA Beijing 100142 China

BACKGROUND There is a close relationship between cirrhosis and hepatocellular carcinoma(HCC).Transjugular intrahepatic portosystemic shunt(TIPS)has good clinical effect in treating the complication of portal ***,because of the risk of postoperative liver failure,severe complications,and low survival rate for HCC,TIPS is contraindicated in patients with portal hypertension and liver *** studied a large cohort of patients with cirrhosis and HCC who underwent TIPS for recurrent variceal bleeding and/or *** To assess the safety,efficacy,and survival rate in patients with HCC who underwent *** THODS Group A comprised 217 patients with HCC and portal hypertension who underwent the TIPS procedure between 1999 and *** TIPS deployment,these patients received palliative treatment for *** B comprised a cohort of 136 HCC patients with portal hypertension who did not undergo TIPS *** B received palliative treatment for HCC plus medical therapy for portal *** clinical outcomes and survival rate were *** UL TS In Group A,the primary technical success rate was 97.69%for TIPS placement,and no severe procedure-related complications of TIPS placement were *** control of variceal bleeding(VB)within 1 mo did not differ significantly between the groups(P=0.261).Absorption of refractory ascites within 1 mo,recurrence of VB,and recurrence of refractory ascites differed significantly between the groups(P=0.017,0.023,and 0.009,respectively).By comparison,the rate of hepatic encephalopathy in Group B was lower than that in Group A(P=0.036).The 1-,2-,3-,4-,and 5-year survival rates were significantly different between Groups A and B(X2=12.227,P=0.018;X2=12.457,P=0.014;X2=26.490,P=0.013;X2=21.956,P=0.009,and X2=24.596,P=0.006,respectively).The mean survival time was 43.7 mo in Group A and 31.8 mo in Group *** survival time was 50.0 mo in Group A and 33.0 mo in Group *** and median survival differe

关键词： Hepatocellular carcinoma Portal hypertension Transjugular intrahepatic portosystemic shunt Transarterial chemoembolization Radiofrequency ablation

Effect of initial stent position on patency of transjugular intrahepatic portosystemic shunt

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World Journal of Gastroenterology 2017年第26期23卷 4779-4787页

作者： shi-hua luo Jian-Guo Chu He huang Ke-Chun Yao Department of Radiology Air Force General Hospital of PLA Department of Ultrasound Air Force General Hospital of PLA

AIM To evaluate the effect of initial stent position on transjugular intrahepatic portosystemic shunt(TIPS).METHODS We studied 425 patients from January 2004 to January 2015 with refractory ascites or variceal bleeding who required TIPS placement. Patients were randomly divided into group A(stent in hepatic vein, n = 57), group B(stent extended to junction of hepatic vein and inferior vena cava, n = 136), group C(stent in left branch of portal vein, n = 83) and group D(stent in main portal vein, n = 149). Primary unassisted patency was compared using Kaplan-Meier analysis, and incidence of recurrence of bleeding, ascites and hepatic encephalopathy(HE) were *** The mean primary unassisted patency rate in group B tended to be higher than in group A at 3, 6 and 12 mo(P = 0.001, 0.000 and 0.005), and in group D it tended to be lower than in group C at 3, 6 and 12 mo(P = 0.012, 0.000 and 0.028). The median shunt primary patency time for group A was shorter than for group B(5.2 mo vs 9.1 mo, 95%CI: 4.3-5.6, P = 0.013, logrank test), while for group C it was longer than for group D(8.3 mo vs 6.9 mo, 95%CI: 6.3-7.6, P = 0.025, log-rank test). Recurrence of bleeding and ascites in group A was higher than in group B at 3 mo(P = 0.014 and 0.020), 6 mo(P = 0.014 and 0.019) and 12 mo(P = 0.024 and 0.034. Recurrence in group D was higher than in group C at 3 mo(P = 0.035 and 0.035), 6 mo(P = 0.038 and 0.022) and 12 mo(P = 0.017 and 0.009). The incidence of HE was not significantly different among any of the groups(P = 0.965).CONCLUSION The initial stent position can markedly affect stent patency, which potentially influences the risk of recurrent symptoms associated with shunt stenosis or occlusion.

关键词： Transjugular intrahepatic portosystemic shunt Liver cirrhosis Stent position Portal hypertension

Targeted puncture of left branch of intrahepatic portal vein in transjugular intrahepatic portosystemic shunt to reduce hepatic encephalopathy

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World Journal of Gastroenterology 2019年第9期25卷 1088-1099页

作者： shi-hua luo Jian-Guo Chu He huang Guo-Rui Zhao Ke-Chun Yao Department of Radiology Zhongnan Hospital of Wuhan University Department of Radiology Air Force Medical Center of PLA Department of Interventional Radiology Henan Provincial Infectious Disease Hospital Department of Ultrasound Air Force Medical Center of PLA

BACKGROUND Transjugular intrahepatic portosystemic shunt(TIPS) is currently used for the treatment of complications of portal hypertension. The incidence of hepatic encephalopathy(HE) remains a problem in TIPS placement. It has been reported that the right branch mainly receives superior mesenteric venous blood while the left branch mainly receives blood from the splenic vein. We hypothesized that targeted puncture of the left portal vein would divert the non-nutritive blood from the splenic vein into the TIPS shunt; therefore, targeted puncture of the left branch of the intrahepatic portal vein during TIPS may reduce the risk of *** To evaluate the influence of targeted puncture of left branch of portal vein in TIPS on *** A retrospective analysis of 1244 patients with portal-hypertension-related complications of refractory ascites or variceal bleeding who underwent TIPS from January 2000 to January 2013 was performed. Patients were divided into group A(targeting left branch of portal vein, n = 937) and group B(targeting right branch of portal vein, n = 307). TIPS-related HE and clinical outcomes were *** The symptoms of ascites and variceal bleeding disappeared within a short *** the endpoint of follow-up, recurrent bleeding and ascites did not differ significantly between groups A and B(P = 0.278, P = 0.561, respectively).Incidence of HE differed significantly between groups A and B at 1 mo(14.94% vs36.80%, χ~2 = 4.839, P = 0.028), 3 mo(12.48% vs 34.20%, χ~2 = 5.054, P = 0.025), 6 mo(10.03% vs 32.24%, χ~2 = 6.560, P = 0.010), 9 mo(9.17% vs 31.27%, χ~2 = 5.357, P =0.021), and 12 mo(8.21% vs 28.01, χ~2 = 3.848, P = 0.051). There were no significant differences between groups A and B at 3 years(6.61% vs 7.16%, χ~2 = 1.204, P =0.272) and 5 years(5.01% vs 6.18%, χ~2 = 0.072, P = 0.562). The total survival rate did not differ between groups A and B(χ~2 = 0.226, P = 0.634, log-rank test).CONCLUSION Targeted puncture of the left branch of the i

关键词： Portal hypertension Transjugular intrahepatic portosystemic shunt Portal vein branch Hepatic encephalopathy

Reduction of portosystemic gradient during transjugular intrahepatic portosystemic shunt achieves good outcome and reduces complications

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World Journal of Gastroenterology 2023年第15期29卷 2336-2348页

作者： shi-hua luo Mi-Mi Zhou Ming-Jin Cai Shao-Lei Han Xue-Qiang Zhang Jian-Guo Chu Department of Interventional Radiology The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510150Guangdong ProvinceChina Department of Liver Disease Jinan Infectious Disease HospitalShandong University School of MedicineJinan 250021Shandong ProvinceChina Department of Gastroenterology The Second Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina Department of Gastroenterology Air Force Medical Center of PLABeijing 100142China

BACKGROUND Transjugular intrahepatic portosystemic shunt(TIPS)is placed important role in the therapy of complications of portal hypertension,there is still no suitable criterion for a reduction in portosystemic gradient(PSG),which can both reduce PSG and maximize clinical results and minimize hepatic encephalopathy(HE).AIM To compare the clinical outcomes and incidence of HE after one-third PSG reduction during TIPS in patients with variceal bleeding and refractory *** A total of 1280 patients with portal-hypertension-related complications of refractory ascites or variceal bleeding who underwent TIPS from January 2016 to January 2019 were analyzed *** were divided into group A(variceal hemorrhage and PSG reduced by one third,n=479);group B(variceal hemorrhage and PSG reduced to<12 mmHg,n=412);group C(refractory ascites and PSG reduced by one third,n=217);and group D(refractory ascites and PSG reduced to<12 mmHg of PSG,plus medication,n=172).The clinical outcomes were *** By the endpoint of follow-up,recurrent bleeding was no different between groups A and B(χ^(2)=7.062,P=0.374),but recurrent ascites did differ significantly between groups C and D(χ^(2)=14.493,P=0.006).The probability of total hepatic impairment within 3 years was significantly different between groups A and B(χ^(2)=11.352,P=0.005)and groups C and D(χ^(2)=13.758,P=0.002).The total incidence of HE differed significantly between groups A and B(χ^(2)=7.932,P=0.016),groups C and D(χ^(2)=13.637,P=0.007).There were no differences of survival rate between groups A and B(χ^(2)=3.376,P=0.369,log-rank test),but did differ significantly between groups C and D(χ^(2)=13.582,P=0.014,log-rank test).CONCLUSION The PSG reduction by one third may reduce the risk of HE,hepatic function damage and achieve good clinical results.

关键词： Portal hypertension Transjugular intrahepatic portosystemic shunt Portosystemic gradient Liver cirrhosis Variceal bleeding Refractory ascites

Incidence of portal vein thrombosis after splenectomy and its influence on transjugular intrahepatic portosystemic shunt stent patency

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World Journal of Clinical Cases 2019年第17期7卷 2450-2462页

作者： Fang Dong shi-hua luo Li-Juan Zheng Jian-Guo Chu He huang Xue-Qiang Zhang Ke-Chun Yao Department of Vascular Surgery Gansu Provincial HospitalLanzhou 730000Gansu ProvinceChina Department of Radiology Zhongnan Hospital of Wuhan UniversityWuhan 430071Hubei ProvinceChina Department of Gastroenterology Gansu Provincial HospitalLanzhou 730000Gansu ProvinceChina Department of Radiology Air Force Medical Center of PLABeijing 100142China Department of Gastroenterology the Second Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina Department of Ultrasound Air Force Medical Center of PLABeijing 100142China

BACKGROUND Transjugular intrahepatic portosystemic shunt (TIPS) is widely accepted as an alternative to surgery for management of complications of portal *** has been used to treat portal vein thrombosis (PVT) in many centers since the *** TIPS has good therapeutic effects on the formation of PVT,the effect of PVT on TIPS stenting has rarely been *** with splenectomy and pericardial devascu-larization have a high incidence of PVT,which can markedly affect TIPS stent patency and increase the risk of recurrent symptoms associated with shunt stenosis or *** To investigate the incidence of PVT after splenectomy and its influence on the patency rate of TIPS in patients with cirrhosis and portal *** Four hundred and eighty-six patients with portal hypertension for refractory ascites and/or variceal bleeding who required TIPS placement between January 2010 and January 2016 were included in this retrospective *** without prior splenectomy were defined as group A (n = 289) and those with prior splenectomy as group B (n = 197).The incidence of PVT before TIPS was compared between the two *** TIPS placement,primary patency rate was compared using Kaplan–Meier analysis at 3,6,9 and 12 mo,and 2 and 3 *** clinical outcomes were *** Before TIPS procedure,the incidence of PVT in group A was lower than in group B (P = 0.003),and TIPS technical success rate in group A was higher than in group B (P = 0.016).The primary patency rate in group A tended to be higher than in group B at 3,6,9 and 12 mo,2 years and 3 years (P = 0.006,P = 0.011,P = 0.023,P = 0.032,P = 0.037 and P = 0.028,respectively).Recurrence of bleeding and ascites rate in group A was lower than in group B at 3 mo (P ≤ 0.001 and P = 0.001),6 mo (P = 0.003 and P = 0.005),9 mo (P = 0.005 and P = 0.012),12 mo (P = 0.008 and P = 0.024),2 years (P = 0.011 and P = 0.018) and 3 years (P = 0.016 and P = 0.017),respectively.

关键词： Portal hypertension Transjugular intrahepatic portosystemic shunt Splenectomy Portal vein thrombosis

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偏态自适型投影深度

数学学报（中文版） 2015年第3期58卷 507-520页

作者：刘小惠罗世华江西财经大学统计学院南昌330013 江西财经大学应用统计研究中心南昌330013

对常规投影深度进行了改进,得到了一类新的可自适应反映多元数据云偏态的统计投影深度.新的深度函数仍然具有凸的深度域,满足一般统计深度函数所应具备的全部基本特点.此外,还考虑了新投影深度函数的计算问题,证得在任意维空间里,它及... 详细信息

对常规投影深度进行了改进,得到了一类新的可自适应反映多元数据云偏态的统计投影深度.新的深度函数仍然具有凸的深度域,满足一般统计深度函数所应具备的全部基本特点.此外,还考虑了新投影深度函数的计算问题,证得在任意维空间里,它及由它诱导的深度域均是可以精确计算的,从技术角度讲,其处理比常规投影深度更加简便.最后,提供了一些数据示例用以展示此偏态自适型投影深度的有限样本性质.

关键词：偏态自适型投影深度深度域有偏数据

Advanced Functional Electromagnetic shielding Materials:A Review Based on Micro‑Nano Structure Interface Control of Biomass Cell Walls

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Nano-Micro Letters 2025年第1期17卷 98-134页

作者： Yang shi Mingjun Wu Shengbo Ge Jianzhang Li Anoud Saud Alshammari Jing luo Mohammed A.Amin hua Qiu Jinxuan Jiang Yazeed M.Asiri Runzhou huang hua Hou Zeinhom M.El‑Bahy Zhanhu Guo Chong Jia Kaimeng Xu Xiangmeng Chen Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037People’s Republic of China State Key Laboratory of Efficient Production of Forest Resourced Beijing Forestry UniversityQinghua East Road 35Haidian DistrictBeijing 100083People’s Republic of China Department of Physics Faculty of Sciences‑ArarNorthern Border UniversityArar 91431Saudi Arabia Department of Chemistry College of ScienceTaif UniversityP.O.Box 1109921944 TaifSaudi Arabia Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China Integrated Composites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon Tyne NE18STUK College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr CityCairo 11884Egypt Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products International Joint Research Center for Biomass MaterialsSouthwest Forestry UniversityKunming 650224People’s Republic of China School of Science Henan Agricultural UniversityZhengzhou 450002People’s Republic of China

Research efforts on electromagnetic interference(EMI)shielding materials have begun to converge on green and sustainable biomass *** materials offer numerous advantages such as being lightweight,porous,and *** to their porous nature,interfacial compatibility,and electrical conductivity,biomass materials hold significant potential as EMI shielding *** concerted efforts on the EMI shielding of biomass materials have been reported,this research area is still relatively new compared to traditional EMI shielding *** particular,a more comprehensive study and summary of the factors influencing biomass EMI shielding materials including the pore structure adjustment,preparation process,and micro-control would be *** preparation methods and characteristics of wood,bamboo,cellulose and lignin in EMI shielding field are critically discussed in this paper,and similar biomass EMI materials are summarized and *** composite methods and fillers of various biomass materials were *** paper also highlights the mechanism of EMI shielding as well as existing prospects and challenges for development trends in this field.

关键词： Biomass materials Electromagnetic interference shielding Micro-nano structure interface control Conductivity

The interaction between KIF21A and KANK1 regulates dendritic morphology and synapse plasticity in neurons

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Neural Regeneration Research 2025年第1期20卷 209-223页

作者： shi-Yan Sun Lingyun Nie Jing Zhang Xue Fang Hongmei luo Chuanhai Fu Zhiyi Wei Ai-Hui Tang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Brain Function and DiseaseMinistry of Education Key Laboratory for Membrane-less Organelles and Cellular DynamicsDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina CAS Center for Excellence in Molecular Cell Sciences Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Department of Neurobiology School of Life SciencesSouthern University of Science and TechnologyShenzhenGuangdong ProvinceChina Brain Research Center Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina

Morphological alterations in dendritic spines have been linked to changes in functional communication between neurons that affect learning and ***-4 KIF21A helps organize the microtubule-actin network at the cell cortex by interacting with KANK1;however,whether KIF21A modulates dendritic structure and function in neurons remains *** this study,we found that KIF21A was distributed in a subset of dendritic spines,and that these KIF21A-positive spines were larger and more structurally plastic than KIF21A-negative ***,the interaction between KIF21A and KANK1 was found to be critical for dendritic spine morphogenesis and synaptic *** of either KIF21A or KANK1 inhibited dendritic spine morphogenesis and dendritic branching,and these deficits were fully rescued by coexpressing full-length KIF21A or KANK1,but not by proteins with mutations disrupting direct binding between KIF21A and KANK1 or binding between KANK1 and *** down KIF21A in the hippocampus of rats inhibited the amplitudes of long-term potentiation induced by high-frequency stimulation and negatively impacted the animals’cognitive *** together,our findings demonstrate the function of KIF21A in modulating spine morphology and provide insight into its role in synaptic function.

关键词： actin cytoskeleton dendrite KANK1 KIF21A microtubule spine morphology spine synaptic plasticity talin1