检索结果-南通市图书馆

An eikonal equation-based earthquake location method by inversion of multiple phase arrivals

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2024年第6期67卷 1802-1817页

作者： Gaoyue LAO Dinghui YANG Shaolin liu Guiju DONG Wenshuai WANG kui liu National Institute of Natural Hazards Ministry of Emergency Management of ChinaBeijing 100085China School of Earth Sciences Yunnan UniversityKunming 650091China Department of Mathematical Sciences Tsinghua UniversityBeijing 100084China School of Mathematics and Statistics Ningxia UniversityYinchuan 750021China

The precise determination of earthquake location is the fundamental basis in seismological community,and is crucial for analyzing seismic activity and performing seismic *** arrivals are generally used to practically determine earthquake ***,first-arrival traveltimes are not sensitive to focal ***,they cannot accurately constrain focal *** improve the accuracy,researchers have analyzed the depth phases of earthquake *** traveltimes of depth phases are sensitive to focal depths,and the joint inversion of depth phases and direct phases can be implemented to potentially obtain accurate earthquake ***,researchers can determine earthquake locations in layered *** layered models can only represent the first-order feature of subsurface structures,the advantages of joint inversion are not fully explored if layered models are *** resolve the issue of current joint inversions,we use the traveltimes of three seismic phases to determine earthquake locations in heterogeneous *** three seismic phases used in this study are the first P-,sPg-and *** calculate the traveltimes of the three seismic phases by solving an eikonal equation with an upwind difference scheme and use the traveltimes to determine earthquake *** verify the accuracy of the earthquake location method by the inversion of three seismic phases,we take the 2021 M_(S)6.4 Yangbi,Yunnan earthquake as an example and locate this earthquake using synthetic and real seismic *** tests demonstrate that the eikonal equation-based earthquake location method,which involves the inversion of multiple phase arrivals,can effectively improve earthquake location accuracy.

关键词： Earthquake location Eikonal equation Fast marching method Heterogeneous model

Survival prognostic analysis of laparoscopic D2 radical resection for locally advanced gastric cancer: A multicenter cohort study

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第8期16卷 2451-2460页

作者： Xiu-Ming Sun kui liu Wen Wu Chao Meng Department of Pain Management Affiliated Hospital of Qingdao UniversityQingdao 266000Shandong ProvinceChina Department of Hepatobiliary Surgery Affiliated Hospital of Qingdao UniversityQingdao 266000Shandong ProvinceChina Department of Gastrointestinal Surgery The First Affiliated Hospital of Naval Medical UniversityShanghai 200433China

BACKGROUND With the development of minimally invasive surgical techniques,the use of laparoscopic D2 radical surgery for the treatment of locally advanced gastric cancer(GC)has gradually ***,the effect of this procedure on survival and prognosis remains *** study evaluated the survival and prognosis of patients receiving laparoscopic D2 radical resection for the treatment of locally advanced GC to provide more reliable clinical evidence,guide clinical decision-making,optimize treatment strategies,and improve the survival rate and quality of life of *** A retrospective cohort study was *** data from 652 patients with locally advanced GC in our hospitals from December 2013 to December 2023 were *** were 442 males and 210 *** mean age was 57±12 *** patients underwent a laparoscopic D2 radical operation for distal *** patients were followed up in the outpatient department and by telephone to determine their tumor recurrence,metastasis,and *** follow-up period ended in December *** distributed data are expressed as the mean±SD,and normally distributed data are expressed as M(Q1,Q3)or M(range).Statistical data are expressed as absolute numbers or percentages;theχ2 test was used for comparisons between groups,and the Mann-Whitney U nonparametric test was used for comparisons of rank *** life table method was used to calculate the survival rate,the Kaplan-Meier method was used to construct survival curves,the log rank test was used for survival analysis,and the Cox risk regression model was used for univariate and multifactor *** The median overall survival(OS)time for the 652 patients was 81 months,with a 10-year OS rate of 46.1%.Patients with TNM stages II and III had 10-year OS rates of 59.6%and 37.5%,respectively,which were significantly different(P<0.05).Univariate analysis indicated that factors such as age,maximum tumor diameter,tumor

关键词： Gastric neoplasms Chinese Laparoscopic Gastrointestinal Surgery Study Group Laparoscopic surgery Locally advanced gastric cancer D2 lymph node dissection

Late Triassic Intracontinental Deformation of South Tianshan,Central Asia:Evidence from Syn-tectonic Sedimentation and Detrital Zircon Provenances of the Kuqa Depression

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2024年第3期98卷 548-568页

作者： QIN Xiang CHEN Xuanhua SHAO Zhaogang ZHANG Yiping WANG Yongchao LI Bing SU He WANG Ye liu kui HAN Lele China Aero Geophysical Survey and Remote Sensing Center for Natural Resources Beijing 100083China Key Laboratory of Airborne Geophysics and Remote Sensing Geology MNRBeijing 100083China Chinese Academy of Geological Sciences Beijing 100037China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China

The Tianshan range,a Paleozoic orogenic belt in Central Asia,has undergone multiple phases of tectonic activities characterized by the N-S compression after the early Mesozoic,including the far-field effects of the Cenozoic Indian-Asian ***,there are limited reports on the tectonic deformation and initiation of Triassic intracontinental deformation in the Tianshan *** this structural context is crucial for interpreting the early intracontinental deformation history of the Eurasian continent during the early *** strata and syn-tectonic sediments provide a rich source of information on tectonic activities and have been extensively used in the studies of orogenic *** on detail fieldwork conducted in this study,the middle-late Triassic Kelamayi Formation of the northern Kuqa Depression in the southern Tianshan fold-thrust belt has been identified as the typical syn-tectonic growth *** youngest detrital zircon component in two lithic sandstone samples from the bottom and top of the Kelamayi growth strata yielded U-Pb ages of 223.4±3.1 and 215.5±2.9 Ma,respectively,indicating that the maximum depositional age of the bottom and top of the Kelamayi growth strata is 226-220 and 218-212 *** geochronological distribution of detrital samples from the Early-Middle Triassic and Late Triassic revealed abrupt changes,suggesting a new source supply resulting from tectonic activation in the Tianshan *** coupling relationship between the syn-tectonic sedimentation of the Kelamayi Formation and the South Tianshan fold-thrust system provides robust evidence that the Triassic intracontinental deformation of the South Tianshan range began at approximately 226-220 Ma(during the Late Triassic)and ended at approximately 218-212 *** findings provide crucial constraints for understanding the intraplate deformation in the Tianshan range during the Triassic.

关键词： growth strata basin-mountain coupling Triassic Indosinian event Kuqa Depression South Tianshan

在线全文

学校读者我要写书评

暂无评论

土地革命战争时期中央苏区财税政策的演变

中共党史研究 2024年第3期 77-87页

作者：刘魁上海立信会计金融学院马克思主义学院

中央苏区建立之初,打土豪是筹措党政军各项经费的临时性举措。伴随着国民党不断的军事“围剿”,筹措经费的渠道由向外扩大苏维埃区域转向在苏区内部征税。苏维埃政府通过发行货币和征收货币税,建立起中央苏区的财政金融体系。增发货币... 详细信息

中央苏区建立之初,打土豪是筹措党政军各项经费的临时性举措。伴随着国民党不断的军事“围剿”,筹措经费的渠道由向外扩大苏维埃区域转向在苏区内部征税。苏维埃政府通过发行货币和征收货币税,建立起中央苏区的财政金融体系。增发货币带来纸币贬值和物价上涨,于是苏维埃政府开始征收实物税。各类税收总量无法满足浩繁的军事需求,因此中华苏维埃共和国临时中央政府先是发行公债,随后开展借谷运动。各项财税改革措施虽不尽完善,但在打破国民党军队的“围剿”和保卫红色政权方面起到了积极作用。

关键词：中央苏区财政收入税收货币税实物税公债借谷

维普期刊数据库博看期刊

社会性质问题论战的起点--20世纪20年代前期留日学生关于社会经济问题的讨论

在线全文

学校读者我要写书评

暂无评论

文史哲 2024年第2期 24-38,165,166页

作者：刘奎厦门大学台湾研究院文学所福建厦门361005

留日学生是中国早期传播马克思主义的重要力量。在20世纪20年代前期,以日本“大高系统”为主的留日学生,从学术性团体“中华学艺社”中分化出来,另办政论性刊物《孤军》等,就中国的经济性质与社会性质,以及中国该走何种道路的问题展开... 详细信息

留日学生是中国早期传播马克思主义的重要力量。在20世纪20年代前期,以日本“大高系统”为主的留日学生,从学术性团体“中华学艺社”中分化出来,另办政论性刊物《孤军》等,就中国的经济性质与社会性质,以及中国该走何种道路的问题展开了深入讨论。他们都认为中国将走向社会主义,对如何迈入却持不同观点,尤其是在应否效法苏俄走激进革命之路的问题上态度迥异。论争渐次分为两种立场:一者认为中国经济尚处于前资本主义阶段,并不具备社会革命的条件,主张先发展资本主义,以社会主义为必要的手段;另一方则认为,在资本主义进入帝国主义阶段后,中国已被卷入世界资本主义市场,具备进行社会革命的条件,主张在无产阶级掌握政权后发展国家资本主义。参与论争的文化人最终选择了不同的革命路线。孤军社的分化,是“后五四”时期知识分子分化重组的缩影,论争也为随后的革命实践提供了理论准备。当时的社会经济问题讨论,对中国半殖民地半封建的社会性质等问题,已有较多论述,并与第三国际和苏俄关于中国社会性质的相关论述遥相呼应,是20世纪二三十年代社会性质问题论战的起点。

关键词：留日学生《孤军》社会主义马克思主义 “后五四” 社会性质

“人类世”可受掌控吗——对现代化方案的一种思考

在线全文

学校读者我要写书评

暂无评论

中国地质大学学报（社会科学版） 2024年第1期24卷 13-20页

作者：刘颖刘魁东南大学马克思主义学院江苏南京211189

于“人类世”中兴起的生态现代主义代表着一种乐观的现代化模式,相信“人类世”是可受掌控的,人类的掌控能够促成人类繁荣与世界生机勃勃。罗萨借由“不受掌控”思想,提出了一种以“共鸣”为核心、更具现实性的现代化模式,坚信世界本就... 详细信息

于“人类世”中兴起的生态现代主义代表着一种乐观的现代化模式,相信“人类世”是可受掌控的,人类的掌控能够促成人类繁荣与世界生机勃勃。罗萨借由“不受掌控”思想,提出了一种以“共鸣”为核心、更具现实性的现代化模式,坚信世界本就是不受掌控的,“全面掌控”会使得世界呈现出更为根本的不受掌控,这恰好印证了生态现代主义在发展过程中遭遇的困境。但是,这两种现代化模式,既未能妥善回答“人类世”可否受掌控的议题,也未能引领人类走向美好未来。对此,人类需要基于对现代性的进一步反思,继续探寻“人类世”可否受掌控的谜底,创造出一种适应“人类世”的现代化方案。

关键词： “人类世” 生态现代主义罗萨现代化现代性

Enhancement of motor functional recovery in thoracic spinal cord injury: voluntary wheel running versus forced treadmill exercise

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 836-844页

作者： Do-Hun Lee Dan Cao Younghye Moon Chen Chen Nai-kui liu Xiao-Ming Xu Wei Wu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteIndiana University School of MedicineIndianapolisINUSA Department of Neurological Surgery Indiana University School of MedicineIndianapolisINUSA Department of Neuroscience Baylor College of MedicineHoustonTXUSA

Spinal cord injury necessitates effective rehabilitation strategies, with exercise therapies showing promise in promoting recovery. This study investigated the impact of rehabilitation exercise on functional recovery and morphological changes following thoracic contusive spinal cord injury. After a 7-day recovery period after spinal cord injury, mice were assigned to either a trained group(10 weeks of voluntary running wheel or forced treadmill exercise) or an untrained group. Bi-weekly assessments revealed that the exercise-trained group, particularly the voluntary wheel exercise subgroup, displayed significantly improved locomotor recovery, more plasticity of dopaminergic and serotonin modulation compared with the untrained group. Additionally, exercise interventions led to gait pattern restoration and enhanced transcranial magnetic motor-evoked potentials. Despite consistent injury areas across groups, exercise training promoted terminal innervation of descending axons. In summary, voluntary wheel exercise shows promise for enhancing outcomes after thoracic contusive spinal cord injury, emphasizing the role of exercise modality in promoting recovery and morphological changes in spinal cord injuries. Our findings will influence future strategies for rehabilitation exercises, restoring functional movement after spinal cord injury.

关键词： behavioral assessment motor function neural plasticity running wheel exercise spinal cord injury treadmill exercise voluntary exercise

在线全文

学校读者我要写书评

暂无评论

漏洞自动修复研究综述

软件学报 2024年第1期35卷 136-158页

作者：徐同同刘逵夏鑫华为公司软件工程应用技术实验室浙江杭州310007

软件漏洞是计算机软件系统安全方面的缺陷,给现代软件及其应用数据的完整性、安全性和可靠性带来巨大威胁.人工治理漏洞费时且易错,为了更好应对漏洞治理挑战,研究者提出多种自动化漏洞治理方案,其中漏洞自动修复方法近来得到研究者广... 详细信息

软件漏洞是计算机软件系统安全方面的缺陷,给现代软件及其应用数据的完整性、安全性和可靠性带来巨大威胁.人工治理漏洞费时且易错,为了更好应对漏洞治理挑战,研究者提出多种自动化漏洞治理方案,其中漏洞自动修复方法近来得到研究者广泛关注.漏洞自动修复技术旨在辅助开发人员修复漏洞,涵盖漏洞根因定位、补丁生成、补丁验证等功能.现有工作缺乏对漏洞修复技术系统性的分类与讨论,为了促进漏洞修复技术发展,加深研究人员对漏洞修复问题的认知理解,对现有漏洞修复方法技术的理论、实践、适用场景和优缺点进行全面洞察,并撰写了漏洞自动修复技术的研究综述.主要内容包括:(1)按照修复漏洞类型不同整理归纳特定类型漏洞的修复方法以及通用类型漏洞的修复方法;(2)按照所采用的技术原理将不同修复方法进行分类与总结;(3)归纳漏洞修复主要挑战;(4)展望漏洞修复未来发展方向.

关键词：软件漏洞漏洞自动修复漏洞分析漏洞定位

人类世的“生态共产主义”如何可能?——从斋藤幸平看马克思晚年的共产主义思想

在线全文

学校读者我要写书评

暂无评论

东南大学学报（哲学社会科学版） 2024年第5期26卷 5-15,148页

作者：刘魁王秀东南大学马克思主义学院江苏南京211189

面对当前严峻的人类世危机,日本的马克思主义研究专家斋藤幸平近年依据对马克思的手稿研究,提出具有“去增长”特征的生态共产主义思想,引起国内外学界的高度关注。在理论上,斋藤幸平虽然没有明确提出“生态共产主义”概念,但他以马克... 详细信息

面对当前严峻的人类世危机,日本的马克思主义研究专家斋藤幸平近年依据对马克思的手稿研究,提出具有“去增长”特征的生态共产主义思想,引起国内外学界的高度关注。在理论上,斋藤幸平虽然没有明确提出“生态共产主义”概念,但他以马克思晚年的生态思想为依据试图倡导具有“去增长”特征的共产主义思想,以回应资本主义盲目的技术与经济增长追求导致的各种危机,实际上就是一种谨慎的生态共产主义思想尝试。尽管他的“去增长”发展战略以及他对马克思晚年共产主义思想的“去增长”解读引起了巨大的学术争议,但是,他从生态维度对马克思晚年共产主义思想的深层发掘,从人类世视角不自觉提出“生态共产主义如何可能”的问题,为21世纪马克思主义生态思想的发展开拓了新的发展空间,值得认真关注。

关键词：人类世危机斋藤幸平去增长生态共产主义

维普期刊数据库博看期刊