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云南地区的背景弹性波场分析

地震学报 2011年第6期33卷 723-734,843页

作者：赵琳安美建沈旭章代光辉田建雄中国地质科学院地质力学研究所中国北京100081 甘肃省地震局中国兰州730000 中国地震台网中心中国北京100045

利用云南省地震台网44个台站记录的2008年1—9月连续波形数据进行互相关计算,得到了台站间的格林函数,并获取对应的频散曲线,据此分析了该地区的区域背景弹性波场的来源及分布.研究发现,该地区的区域背景弹性波场有着明显的方向性,15s... 详细信息

利用云南省地震台网44个台站记录的2008年1—9月连续波形数据进行互相关计算,得到了台站间的格林函数,并获取对应的频散曲线,据此分析了该地区的区域背景弹性波场的来源及分布.研究发现,该地区的区域背景弹性波场有着明显的方向性,15s信号的总体传播方向是从东南向西北,也就是说主要来自云南省的东南方向,据此推测区域背景弹性波场可能与中国南海或者南太平洋的海洋活动有关.另外该地区的区域背景弹性波场有着明显的季节性变化,其中6—9月份的能量较强.对比中国大陆风力分布发现,该信号与区域台站附近及台站间的风力没有明显关系.

关键词：环境噪声背景信号互相关频散曲线

PERMIAN SEDIMENTARY BASINS AND REGIONAL SEDIMENTARY MODELS IN THE SICHUAN-YUNNAN-GUIZHOU-GUANGXI REGION AND CORRELATABILITY OF SEALEVEL CHANGES

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Scientia Geologica Sinica 1997年第3期 43-45+49+51页

作者： Chen Hongde, Qin jianxiong, tian Jingchuan and Li Yusheng Institute of Sedimentology, Chengdu University of Technology, Chengdu 610059 Shou Jianfeng, Qian Yizhong and Sheng Anjiang Hangzhou Institute of Petroleum Geology, CNPC, Hangzhou 310023

ＰＥＲＭＩＡＮＳＥＤＩＭＥＮＴＡＲＹＢＡＳＩＮＳＡＮＤＲＥＧＩＯＮＡＬＳＥＤＩＭＥＮＴＡＲＹＭＯＤＥＬＳＩＮＴＨＥＳＩＣＨＵＡＮＹＵＮＮＡＮＧＵＩＺＨＯＵＧＵＡＮＧＸＩＲＥＧＩＯＮＡＮＤＣＯＲＲＥＬＡＴＡＢＩＬ...

ＰＥＲＭＩＡＮＳＥＤＩＭＥＮＴＡＲＹＢＡＳＩＮＳＡＮＤＲＥＧＩＯＮＡＬＳＥＤＩＭＥＮＴＡＲＹＭＯＤＥＬＳＩＮＴＨＥＳＩＣＨＵＡＮＹＵＮＮＡＮＧＵＩＺＨＯＵＧＵＡＮＧＸＩＲＥＧＩＯＮＡＮＤＣＯＲＲＥＬＡＴＡＢＩＬＩＴＹＯＦＳＥＡＬＥＶＥＬＣＨＡＮ...

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高州水库轮虫垂直分布的季节变化

湛江水产学院学报 1991年第1期11卷 29-35页

作者：张礼善李建雄冯添湛江水产学院高州水库

本文为高州水库轮虫调查(1988)的第三部分。各水层轮虫数量的季节变化是:上层(5米以上水层),春季占82.5％,夏季占67％,冬季占65.2％,秋季由于轮虫种群向中层(10至15米)迁移,只占46.5％;下层(20至30米)各季节轮虫数量一般少于8％。除7、... 详细信息

本文为高州水库轮虫调查(1988)的第三部分。各水层轮虫数量的季节变化是:上层(5米以上水层),春季占82.5％,夏季占67％,冬季占65.2％,秋季由于轮虫种群向中层(10至15米)迁移,只占46.5％;下层(20至30米)各季节轮虫数量一般少于8％。除7、8月份外,它们的最大密度都在2-4米水层。轮虫垂直变化的特点主要是由占轮虫总量83％的8种优势轮虫所形成。文中还讨论了水温、水深、风和其他因素对轮虫垂直分布的巨大影响。

关键词：轮虫垂直分布季节变化

Performance Evaluation and Dynamic Optimization of Speed Scaling on Web Servers in Cloud Computing

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Tsinghua Science and Technology 2013年第3期18卷 298-307页

作者： Yuan tian Chuang Lin Zhen Chen jianxiong Wan Xuehai Peng the Department of Computer Science and Technology Tsinghua University the Research Institute of Information Technology and Tsinghua National Laboratory for Information Science and Technology (TNList) Tsinghua University the College of Information Engineering Inner Mongolia University of TechnologyJinchuan Development Area Hohhot Inner Mongolia 010080 China the Beijing Municipal Commission of Economy and Information

The energy consumption in large-scale data centers is attracting more and more attention today with the increasing data center energy costs making the enhanced performance very expensive. This is becoming a bottleneck to further developments in terms of both scale and performance of cloud computing. Thus, the reduction of the energy consumption by data centers is becoming a key research topic in green IT and green computing. The web servers providing cloud service computing run at various speeds for different scenarios. By shifting among these states using speed scaling, the energy consumption is proportional to the workload, which is termed energy-proportionality. This study uses stochastic service decision nets to investigate energy-efficient speed scaling on web servers. This model combines stochastic Petri nets with Markov decision process models. This enables the model to dynamically optimize the speed scaling strategy and make performance evaluations. The model is graphical and intuitive enough to characterize complicated system behavior and decisions. The model is service-oriented using the typical service patterns to reduce the complex model to a simple model with a smaller state space. Performance and reward equivalent analyse substantially reduces the system behavior sub-net. The model gives the optimal strategy and evaluates performance and energy metrics more concisely.

关键词： cloud computing green IT energy consumption data centers stochastic Petri nets performance evaluation dynamic optimization service computing

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西南地区东南部二叠纪沉积盆地类型及演化

沉积与特提斯地质 1999年第A1期19卷 132-141页

作者：覃建雄陈洪德田景春李余生成都理工学院沉积研究所

该区系指由红河断裂、绿汁江断裂、龙门山断裂、城房断裂和钦防断裂所围限的滇东、贵图1　西南地区二叠纪沉积盆地类型及分布1红河断裂;2龙门山断裂;3城房断裂;4钦防断裂;5绿汁江断裂;6南盘江断裂;7丹池断裂;8江南断裂。A—上扬子克拉... 详细信息

该区系指由红河断裂、绿汁江断裂、龙门山断裂、城房断裂和钦防断裂所围限的滇东、贵图1　西南地区二叠纪沉积盆地类型及分布1红河断裂;2龙门山断裂;3城房断裂;4钦防断裂;5绿汁江断裂;6南盘江断裂;7丹池断裂;8江南断裂。A—上扬子克拉通盆地;B—右江被动陆缘裂谷盆地(P1)...

关键词：沉积盆地类型西南地区二叠纪被动陆缘前陆盆地弧后裂谷盆地走滑盆地早二叠世克拉通盆地碳酸盐岩

Symmetry Classification of Partial Differential Equations Based on Wu's Method

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Journal of Donghua University(English Edition) 2021年第2期38卷 187-192页

作者： tian Yi WAN jianxiong College of Data Science and Application Inner Mongolia University of TechnologyHohhot 010080China Inner Mongolia Autonomous Region Engineering&Technology Research Center of Big Data Based Software Service Hohhot 010080China

Lie algorithm combined with differential form Wu's method is used to complete the symmetry classification of partial differential equations(PDEs)containing arbitrary *** process can be reduced to solve a large system of determining equations,which seems rather difficult to solve,then the differential form Wu's method is used to decompose the determining equations into a series of equations,which are easy to *** illustrate the usefulness of this method,we apply it to some test problems,and the results show the performance of the present work.

关键词： Lie algorithm differential form Wu's method determining equation symmetry classification partial differential equation(PDE)

The progress on the estimation of DNA methylation level and the detection of abnormal methylation

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Quantitative Biology 2022年第1期10卷 55-66页

作者： Shicai Fan Likun Wang Liang Liang Xiaohong Cao jianxiong Tang Qi tian Shenzhen Institute for Advanced Study University of Electronic Science and Technology of ChinaShenzhen 518110China School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Institute of Systems Biomedicine Beijing Key Laboratory of Tumor Systems BiologyDepartment of PathologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing 100191China Cancer Center Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengdu 611731China Department of Geriatric Endocrinology Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 611731China

Background:DNA methylation is a key heritable epigenetic modification that plays a crucial role in transcriptional regulation and therefore a broad range of biological *** complex patterns of DNA methylation highlight the significance of the profiling the DNA methylation ***:In this review,the main high-throughput detection technologies are summarized,and then the three trends of computational estimation of DNA methylation levels were analyzed,especially the expanding of the methylation data with lower ***,the detection methods of differential methylation patterns for sequencing and array data were ***:More and more research indicated the great importance of DNA methylation changes across different diseases,such as *** a lot of enormous progress has been made in understanding the role of DNA methylation,only few methylated genes or functional elements serve as clinically relevant cancer *** bottleneck in DNA methylation advances has shifted from data generation to data ***,it is meaningful to develop machine learning models for computational estimation of methylation profiling and identify the potential biomarkers.

关键词： DNA methylation genome-wide profiling computational estimation single-cell methylome differential methylation detection

Controllable optical activity with non-chiral plasmonic metasurfaces

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Light(Science & Applications) 2016年第1期5卷 646-652页

作者： Ping Yu jianxiong Li Chengchun Tang Hua Cheng Zhaocheng Liu Zhancheng Li Zhe Liu Changzhi Gu Junjie Li Shuqi Chen Jianguo tian The MOE Key Laboratory of Weak Light Nonlinear Photonics School of PhysicsTeda Applied Physics Instituteand the 2011 Project Collaborative Innovation Center for Biological TherapyNankai UniversityTianjin 300071China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Optical activity is the rotation of the plane of linearly polarized light along the propagation direction as the light travels through optically active *** existing methods,the strength of the optical activity is determined by the chirality of the materials,which is difficult to control *** we numerically and experimentally investigated an alternative approach to realize and control the optical activity with non-chiral plasmonic *** judicious design of the structural units of the metasurfaces,the right and left circular polarization components of the linearly polarized light have different phase retardations after transmitting through the metasurfaces,leading to large optical ***,the strength of the optical activity can be easily and accurately tuned by directly adjusting the phase *** proposed approach based on non-chiral plasmonic metasurfaces exhibits large optical activity with a high controllable degree of freedom,which may provide more possibilities for applications in photonics.

关键词： metasurfaces optical activity surface plasmon polaritons

An Outbreak of Dengue Virus Type 1--Jiangxi Province,China,2019

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China CDC weekly 2020年第35期2卷 684-687页

作者： Fuqiang Yang Guanghui Xia Zhili Zeng Zhongjian Li Huijian Cheng Daping Che Jun Zong jianxiong Li tian Gong Guihua Liu Weidong Zhou Bihai Wei Xiaobo Liu Jiandong Li Sheng Ding Jiangxi Provincial Center for Disease Control and Prevention NanchangJiangxiChina Xin’gan County Center for Disease Control and Prevention Ji’anJiangxiChina Ji’an City Center for Disease Control and Prevention Ji’anJiangxiChina WHO Collaborating Centre for Vector Surveillance and Management National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina Institute for Viral Disease Control and Prevention.Chinese Center for Disease Control and Prevention BeijingChina

What is known about this topic?Dengue fever is an acute febrile illness caused by four types of dengue virus(DENV 1–4),and is a mosquitoborne infectious *** incidence of dengue has increased dramatically around the world in recent *** estimated of 3.9 billion people in 128 countries are at risk of infection with dengue viruses,70%of whom are in *** 2017,the first local infections of dengue virus(DENV-2)in Jiangxi Province was reported in Zhanggong District,Ganzhou *** is added by this report?From August to September 2019,the first dengue outbreak happened in Xin’gan County,where 81 local dengue fever cases were reported,35 were laboratoryconfirmed cases,and 46 were clinically-diagnosed cases;all cases were dengue virus type *** DENV-virus strains isolated from the cases of Xin’gan County were close to the strains isolated in Singapore(MF033254|25657|Singapore|2016)and Henan(MK905537|He nan201903|China:Henan Province|2019).What are the implications for public health practice?The outbreak might have been caused by imported cases or covert *** outbreak in Xin’gan County indicated that more proactive countermeasures should be taken during the dengue epidemic period such as intensifying surveillance for dengue cases,virus serotype,and Aedes vector density and strengthening cooperation with customs and tourism ***,the outbreak should prompt training in medical institutions and improved ability for doctor’s to diagnose dengue fever,which is very important for early detection of dengue cases and taking preventive measures.

关键词： prompt strengthening Jiangxi