检索结果-南通市图书馆

Chain store game based channel allocation in cognitive radio system

在线全文

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2010年第1期17卷 1-8页

作者： LI jin-long ZHU ping wang Xu-fa School of Computer Science and Technology University of Science and Technology of China Hefei 230027 China

In adaptive channel allocation for secondary user （SU） of cognitive radio （CR） system, it is necessary to consider allocation process from the temporal perspective. In this article, a chain store game is modeled to achieve SU＇s equilibrium state. Due to the computational complexity of solving equilibrium states, the authors explore the correlated equilibrium （CE） by importing signal mechanisms based on time and sequence number. Also, correlated equilibrium based game algorithms are presented. Simulations show that these algorithms are superior to other allocation algorithms both in channel utilization and communication time.

关键词： CR dynamic specturm allocation chain store game Nash equilibrium (NE) correlated equilibrium (CE)

Improved biopsy accuracy in Barrett's esophagus with a transparent cap

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第16期20卷 4718-4722页

作者： Bai-Li Chen Xiang-Bin Xing jin-Hui wang Ting Feng Li-Shou Xiong jin-ping wang Yi Cui Department of Gastroenterology the First Affiliated Hospital of Sun Yat-Sen University

AIM: To evaluate the efficacy of endoscopy with a transparent cap on biopsy positioning in Barrett’s esophagus (BE).

关键词： Barrett’ s esophagus, Endoscopy, Transparent cap, Biopsy

Eosinophilic fasciitis difficult to differentiate from scleroderma:A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2023年第13期11卷 3092-3098页

作者： Tian-Yi Lan Zi-Han wang Wei-ping Kong jin-ping wang Nan Zhang Di-Er jin jing Luo Qing-Wen Tao Ze-Ran Yan Graduate College Beijing University of Chinese MedicineBeijing 100029China Traditional Chinese Medicine Department of Rheumatism China-Japan Friendship HospitalBeijing 100029China

BACKGROUND Eosinophilic fasciitis(EF)is a rare connective tissue disease that can cause swelling and sclerosis of the extremities,and special attention is needed to differentiate EF from systemic *** or omission markedly delays treatment of EF,and severe skin sclerosis in advanced stages can cause joint contracture and tendon retraction,worsening the patient's prognosis and quality of *** SUMMARY We report a case of EF in a young woman diagnosed by tissue biopsy,confirming the difficulty of differential diagnosis with *** Focusing on skin manifestations,completing tissue biopsy and radiography can help diagnose EF *** should enhance their understanding of the differences between EF and scleroderma,and early diagnosis and standardized treatment can improve the prognosis of patients with EF.

关键词： Eosinophilic fasciitis Scleroderma Biopsy Diagnose Prognosis Case report

Formation mechanism of fault accommodation zones under combined stress in graben basin:Implications from geomechanical modeling

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum Science 2024年第1期21卷 54-76页

作者： Qi-Qiang Ren jin-Liang Gao Rong-Tao Jiang jin wang Meng-ping Li Jian-Wei Feng Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059SichuanChina PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China Jianghan Oilfield Oil and Gas Production Capacity Construction Management Center Chongqing408000China Sinopec Chongqing Fuling Shale Gas Exploration and Development Company Chongqing408000China College of Energy Chengdu University of TechnologyChengdu 610059SichuanChina School of Geoscience China University of Petroleum(East China)Qingdao 266580ShandongChina

A fault accommodation zone is a type of structure that is defined as regulating displacement and strain between faults *** numbers of fault accommodation zones are being identified in graben basins,indicating the potential exploration target and petroleum accumulation *** study aims to analyze the formation mechanism and development of fault accommodation zones under combined stress by a numerical simulation method considering geomechanical *** three-dimensional(3-D)seismic interpretation and fractal dimension method,exampled with the Dongxin fault zone,the fault activity and fault combination pattern were conducted to quantitatively characterize the activity difference in fault accommodation *** with mechanical experiment test,a geomehcanical model was established for fault accommodation zones in a graben *** the paleostress numerical simulations and structural physical simulation experiment,the developmental characteristics and genetic mechanism of fault accommodation zones were *** by multi movements and combined stresses,three significant tectonic evolution stages of the Dongxing Fault Zone(DXFZ)were distinguished:During the E_(s)^(3)sedimentary period,the large difference in the stress,strain,and rupture distribution in various faults were significant,and this stage was the key generation period for the prototype of the DXFZ,including the FAZ between large-scale *** the E_(s)^(2)sedimentary period,the EW-trending symmetric with opposite dipping normal faults and the NE-SW trending faults with large scale were furtherly *** junction area of two secondary normal faults were prone to be ruptured,performing significant period for inheriting and developing characteristics of fault accommodation *** the Es1 sedimentary period,the high-order faults in the DXFZ exhibited the obvious fault depressions and strike-slip activity,and the fault accommodation zones were

关键词： Fault accommodation zone Graben basin Fault activity Tectonic physical simulation experiment Finite element numerical simulation Dongxin fault zone

3D-structured carbon nanotube fibers as ultra-robust fabrics for adaptive electromagnetic shielding

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第9期17卷 8521-8530页

作者： Dongping Li ping wang Yuanyuan Li Zhenzhong Yong Kunjie Wu Yan Zhang jin wang Dongmei Hu Key Laboratory of Multifunctional and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China College of Textile and Clothing Engineering of Soochow University Suzhou 215021China

Wireless communication technology is indispensable in our daily lives,but it also results in serious electromagnetic radiation ***,developing smart electromagnetic interference shielding materials with adjustable electromagnetic wave(EMW)responses holds significant promise for future electromagnetic shielding *** this study,we propose an electromagnetic shielding switch(ESS)characterized by tunable electromagnetic shielding performance achieved by fabricating a three-dimensional(3D)carbon nanotube-based spacer fabric(CNT-SF)and modifying CNT-SF with chemical vapor deposition(CCNT-SF).The CCNT-SF displays direction-dependent electrical conductivity by manipulating the warp and weft density,measuring 128 S/m transversely and 447 S/m *** characteristic allows the CCNT-SF to transmit or shield EMW by adjusting the angle of EMW incidence through fabric rotation,resulting in anisotropic electromagnetic shielding performance(33 dB transversely and 87 dB vertically).This feature enables switchable shielding with an on/off ratio of ***,the unique 3D structure confers excellent mechanical properties on the fabric,with compressive strength reaching 120 *** a flexible,lightweight,and mechanically robust ESS,the CCNT-SF holds promising prospects for mitigating the challenges of increasingly severe and intricate electromagnetic environments.

关键词： carbon nanotube spacer fabric electromagnetic shielding impact resistance joule heating electromagnetic shielding switch

The value of real-time three-dimensional echocardiography in evaluating left ventricular function for different degrees of heart failure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Hainan Medical University 2020年第17期26卷 47-51页

作者： Qin wang jin-ping wang Department of Ultrasound Medicine The First Affiliated Hospital of Anhui University of Chinese MedicineHefei 230031Anhui

Objective:To explore the value and feasibility of real-time three-dimensional echocardiography(RT-3DE)in evaluating left ventricular function in patients with different degrees of heart ***:The 60 heart failure patients in the case group were divided into three subgroups according to the New York Heart Association(NYHA)classification:12 cases of cardiac function gradeⅡ,35 cases of cardiac function gradeⅢ,13 cases of cardiac function grade IV,and the other 30 cases of healthy subjects as control *** the left ventricular end-diastolic volume(LVEDV),left ventricular end-systolic volume(LVESV),left ventricular ejection fraction(LVEF),and left ventricular 16,12,and 6 segments reaching the minimum systolic volume time standard deviation standardized value(Tmsv SD%),left ventricular 16,12 and 6 segments reaching the minimum systolic volume time standardized values of the maximum difference(Tmsv DIF%),analysis of the correlation between the above left ventricular function-related parameters and cardiac function ***:(1)There were statistically significant differences in LVEDV and LVESV between each group(p<0.001).There was no statistically significant difference in LVEF between the cardiac function gradeⅡgroup and the control group,and between the grade IV group and the gradeⅢgroup(p=0.094 and 0.246).(2)compared with the control group,all parameters related to RT-3DE evaluation of left ventricular synchronization were prolonged in the case group,and the difference was statistically significant(p<0.001).The differences of Tmsv 16-SD%and Tmsv 16-DIF%in each subgroup of the case group were statistically significant(p<0.001).(3)LVEF was negatively correlated with NYHA classification of cardiac function(rs=-0.779,p<0.001),and LVEDV,LVESV,Tmsv 16-SD%,Tmsv 12-SD%,Tmsv 6-SD%,Tmsv 16-DIF%,Tmsv 12-DIF%,Tmsv 6-DIF%were positively correlated with NYHA function classification,showing strong correlation(rs=0.710,0.785,0.885,0.675,0.605,0.885,0.695,0.622,p

关键词： RT-3DE Heart failure Heart function classification The correlation

Simulation Analysis of Deformation Control for Magnetic Soft Medical Robots

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2024年第3期11卷 794-796页

作者： jingxi wang Baoyu Liu Edmond Q.Wu jin Ma ping Li Key Laboratory of Biomechanics and Mechanobiology(Beihang University) Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineeringthe School of Biological Science and Medical EngineeringBeihang UniversityBeijing100083China IEEE the Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China the Department of Aerospace Medicine Air Force Medical UniversityXi’an 710032China

Dear Editor,This letter presents a biocompatible cross-shaped magnetic soft robot and investigates its deformation mode control strategy through COMSOL modeling and *** soft robots offer novel avenues for precise trea... 详细信息

关键词： robot simulation COMSOL

Exogenous p27KIP1 expression induces anti-tumour effects and inhibits the EGFR/PI3K/Akt signalling pathway in PC3 cells

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2009年第6期11卷 669-677页

作者： Jun Chen Dan Xia jin-Dan Luo ping wang Department of Urology The First Affiliated Hospital Medical College of ZheJiang University Hangzhou 310003 China

p27 is a cyclin-dependent kinase inhibitor that regulates the progression of cells from G1 to S phase of the cell cycle. Loss of p27 has been associated with disease progression and with an unfavourable outcome in prostate cancer. In this study, we investigated whether exogenous p27 expression in the human androgen-independent prostate cancer PC3 cell line had any effect on cell growth, and we studied the molecular mechanisms involved. p27 expression was restored in PC3 cells by plasmid delivery. Cell proliferation and apoptosis were assessed in PC3 cells transfected with p27. We also investigated the effects of p27 on the epidermal growth factor receptor （EGFR）/ phosphatidylinositol 3-kinase （PI3K）/Akt signalling pathway in PC3 cells. By restoring p27 expression in PC3 cells, we observed that p27 reduced proliferation and induced arrest in G0/G1 phase. Moreover, p27-transfected PC3 cells underwent apoptosis, as shown by flow cytometric analysis and western blotting analysis of Bcl-2, Bax, Bad, caspase-3 and poly（ADP-ribose）polymerase expression. Furthermore, the p27-induced anti-tumour action corre- lated with inhibition of the EGFR/PI3K/Akt signalling pathway, as confirmed by western blotting analysis and densitometry of EGFR, PI3K （p85）, Akt and p-Akts473 expression. Our results suggest that exogenous expression of p27 inhibits the proliferation of PC3 cells through induction of G1 arrest and apoptosis, and this process correlates with inhibition of the EGFR/PI3K/Akt signalling pathway.

关键词： apoptosis EGFR p27 prostate cancer cells signalling pathway

Event-triggered impulsive synchronization of heterogeneous neural networks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第2期67卷 331-332页

作者： Zhengxin wang Chongfang jin wangli HE Min XIAO Guo-ping JIANG jinde CAO College of Science Nanjing University of Posts and Telecommunications Jiangsu Engineering Lab for IOT Intelligent Robots (IOTRobot) Nanjing University of Posts and Telecommunications Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of EducationEast China University of Science and Technology School of Automation Nanjing University of Posts and Telecommunications School of Mathematics Southeast University Yonsei Frontier Lab Yonsei University

Synchronization is one of the most important dynamics in neural networks. Several scholars have studied the quasi-synchronization of heterogeneous neural networks [1],wherein external controllers play a significant role. Impulsive control, a kind of energy-saving control, is activated instantaneously only at specific discrete moments.

关键词：