检索结果-南通市图书馆

An Ocean Reanalysis System for the Joining Area of Asia and Indian-Pacific Ocean

在线全文

学校读者我要写书评

暂无评论

Atmospheric and Oceanic Science Letters 2010年第2期3卷 81-86页

作者： YAN Chang-Xiang zhu jiang XIE Ji-Ping International Center for Climate and Environment Science Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry （LAPC） Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

An ocean reanalysis system for the joining area of Asia and Indian-Pacific Ocean (AIPO) has been developed and is currently delivering reanalysis data sets for study on the air-sea interaction over AIPO and its climate variation over China in the inter-annual time scale.This system consists of a nested ocean model forced by atmospheric reanalysis,an ensemble-based multivariate ocean data assimilation system and various ocean observations.The following report describes the main components of the data assimilation system in detail.The system adopts an ensemble optimal interpolation scheme that uses a seasonal update from a free running model to estimate the background error covariance matrix.In view of the systematic biases in some observation systems,some treatments were performed on the observations before the assimilation.A coarse resolution reanalysis dataset from the system is preliminarily evaluated to demonstrate the performance of the system for the period 1992 to 2006 by comparing this dataset with other observations or reanalysis data.

关键词：海洋大气太平洋地区系统印度亚洲海气相互作用数据同化协方差矩阵

Evaluation of a global eddy-permitting hybrid coordinate ocean model

在线全文

学校读者我要写书评

暂无评论

Atmospheric and Oceanic Science Letters 2018年第4期11卷 345-351页

作者： CHEN Yue-Liang YAN Chang-Xiang zhu jiang LI Yi-Neng International Center for Climate and Environment Sciences Institute of Atmospheric Physics Chinese Academy of Sciences College of Earth Science University of Chinese Academy of Sciences State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences South China Sea Institute of Oceanology Chinese Academy of Sciences

本文基于垂直混合坐标模式HYCOM建立一个水平分辨率17–25km的准中尺度涡海洋环流数值系统,利用气候态强迫场进行了百年试验,保证了海洋状态达到平衡,然后利用高频强迫场对过去22年(1993–2014)开展了数值试验,利用观测对试验结构进行... 详细信息

本文基于垂直混合坐标模式HYCOM建立一个水平分辨率17–25km的准中尺度涡海洋环流数值系统,利用气候态强迫场进行了百年试验,保证了海洋状态达到平衡,然后利用高频强迫场对过去22年(1993–2014)开展了数值试验,利用观测对试验结构进行了检验。结果表明,对于全球大洋而言,模拟的海表温度要比观测暖0.29°C,模拟的海表温度季节循环稍微偏强;模拟的次表层温盐结构比较合理,但由于海冰模块的缺乏在上层1000m纬向平均的全球海洋引起了一个0.21°C冷偏差和0.16psu的淡水偏差;模拟的赤道太平洋潜流强度要弱于观测,但要优于再分析数据ECCO。能很好地再现与中尺度涡有关的变率位置。总之,该海洋环流数值系统能够比较合理地模拟上层海洋的动力、热力以及变率结构。

关键词：垂直混合坐标海洋模式海表温度次表层温度盐度变率

Existence and Regularity of Solution to a Thermally Coupled Nonstationary System

在线全文

学校读者我要写书评

暂无评论

Chinese Quarterly Journal of Mathematics 2008年第4期23卷 512-524页

作者： WANG Hui LI Gang zhu jiang Dan-ni College of Mathematics and Physics Nanjing Univeristy of Information Science and Technology Nangjing 210044 China Laboratorio National de Computacao Cientifica RJ Brazil Department of Mahtematics Southeast University Nanjing 211189 China

在这份报纸，为与热效果设计问题的一个类建模的椭圆形寓言的系统是的 a coupled 一个弱解决方案的 studied.Existence 首先通过 Meyers'theorem 的结果被建立， Schauder 修理了点定理，在哪儿联合函数(s)， k 被假定在 C 被跳(红外?... 详细信息

在这份报纸，为与热效果设计问题的一个类建模的椭圆形寓言的系统是的 a coupled 一个弱解决方案的 studied.Existence 首先通过 Meyers'theorem 的结果被建立， Schauder 修理了点定理，在哪儿联合函数(s)， k 被假定在 C 被跳(红外?祥獥吗？

关键词：非稳态热耦合方程组解存在性正则性解题方法

移动通信使能其他行业碳减排的定量评估:指标、方法和案例

在线全文

学校读者我要写书评

暂无评论

中国科学：信息科学 2024年第4期54卷 777-787页

作者：张四海崔婵孙宏宇曾勇梅朱江朱近康中国科学技术大学中国科学院无线光电通信重点实验室合肥230026 中国科学技术大学微电子学院合肥230026 华为技术有限公司上海201206

随着新一代信息通信技术(information and communication technologies,ICT)的高速发展以及新基建的部署,移动通信系统的能耗和碳排放出现较快增长的趋势.ICT行业在自身节能减排之外,使能其他行业节能减排,可有效降低其他行业的碳排放,... 详细信息

随着新一代信息通信技术(information and communication technologies,ICT)的高速发展以及新基建的部署,移动通信系统的能耗和碳排放出现较快增长的趋势.ICT行业在自身节能减排之外,使能其他行业节能减排,可有效降低其他行业的碳排放,是未来理论研究行业应用的重要领域.本文基于ICT使能碳减排评估框架,提出两个定量衡量使能效果的指标,使能减碳比(enable carbon reduction ratio,ECRR)和使能低碳系数(enable carbon reduction coefficient,ECRC)以及相应的定量分析方法,用于评估被使能企业的实际碳减排效果.本文研究可保护数据隐私的多方数据共享,基于安全多方计算(secure multi-party computation,SMPC)框架,提出保护各方数据隐私的使能碳减排评估方法.本文通过实际案例,完成数据采集、分析验证,对所提指标和方法论证其有效性和实用性.

关键词： ICT使能碳减排量化评估隐私保护全生命周期碳足迹使能低碳系数

Common Fixed Points under Contractive Conditions in Cone Metric Spaces

在线全文

学校读者我要写书评

暂无评论

Chinese Quarterly Journal of Mathematics 2013年第1期28卷 47-52页

作者： WANG Yun-jie zhu jiang Kewen Institute Jiangsu Normal University Xuzhou 221116 China School of Mathematical Sci-ence Jiangsu Normal University Xuzhou 221116 China

In order to develop and improve the fixed point theorems in cone metric spaces, some new fixed point theorems are presented for two mappings in cone metric spaces which satisfy contractive conditions, where the cone is not necessarily normal. Our results generalize fixed point theorems of Abbas, Jungck and Stojan Radenovi in cone metric spaces.

关键词： cone metric space normal and non-normal cone common fixed point

在线全文

学校读者我要写书评

暂无评论

电力监控网安设备策略统一管理体系及其实践

信息安全研究 2024年第5期10卷 481-488页

作者：冯陈佳朱江朱寅严威李雪妍张宇袁倩倩国网上海市电力公司市北供电公司上海200072

随着电力监控系统建设不断完善,部署在其中的网络、安全设备和业务应用场景不断增多,相关的网络边界安全策略也愈加繁杂,往往跨越多个供应商、多个设备厂商以及多个物理位置,运维难度大,依赖于“人”以及传统“手动”的安全管理方式准... 详细信息

随着电力监控系统建设不断完善,部署在其中的网络、安全设备和业务应用场景不断增多,相关的网络边界安全策略也愈加繁杂,往往跨越多个供应商、多个设备厂商以及多个物理位置,运维难度大,依赖于“人”以及传统“手动”的安全管理方式准确率低,极大增加了公司重要业务和核心数据资产遭受网络攻击的风险.因此,迫切需要加强网络边界安全策略管理体系的建设.结合电力监控系统的网络安全设备特性,提出一套基于网络安全设备资产分析、电力监控系统路由拓扑分析以及信息安全设备策略分析的安全边界策略统一管理体系,并开发了相应软件平台,在资产探测、路由策略采集、防护策略采集的基础上进行网络安全策略计算,实现了安全边界的策略统一管理.研究以及实践部署表明,该体系可以有效提升运维效率和系统安全性,对于电力监控系统具有较好的针对性、实用性和先进性.

关键词：电力监控系统安全边界策略统一管理体系风险监测策略优化

维普期刊数据库博看期刊

Comparative study on skin temperature response to menstruation at acupuncture points in healthy volunteers and primary dysmenorrhea patients

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2017年第2期37卷 220-228页

作者： She Yanfen Ma Liangxiao zhu jiang Qi Conghui Wang Yanxia Tang Ling Li Chunhua Yuan Hongwen Liu Yuqi Song Jiashan School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese Medicine School of Acupuncture-Moxibustion and Tuina Hebei University of Chinese Medicine Department of Acupuncture Hebei Provincial General Hospital Department of Gynecology Dong Zhi Men Hospital Affiliated to Beijing University of Chinese Medicine Department of Acupuncture and Physiotherapy Beijing Electric Power HospitalCapital Medical University School of Traditional Chinese Medicine Capital Medical University Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical Science Department of Acupuncture The Third Affiliated Hospital of Beijing University of Chinese Medicine

OBJECTIVE:To assess skin temperature response to menstruation at acupuncture points in primary dysmenorrhea(PD) patients and healthy volunteers so as to explore acupuncture point specificity in reflecting diseases in the light of skin temperature.METHODS:Fifty-two PD patients and 49 healthy volunteers were recruited.Skin temperature measurements were performed with a skin temperature assessment device at 10 points.Absolute difference between skin temperature of the same point on the left and right side is used as main outcome measure.RESULTS:On the first day of menstruation, when menstrual pain attacking in PD patients, a significant increase in skin temperature difference was detected at Taixi(KI 3) compared with the healthy group(P 0.05).CONCLUSION:The skin temperature difference at menstruation-relevant points in PD patients did not all change significantly more than those in women without PD.Significant difference was only found in Taixi(KI 3), the Yuan-source point of Kidney meridian.

关键词：痛经月经皮肤温度削尖 LR 6 (Zhongdu ) 削尖 KI 3 (Taixi ) 肾顶点比较学习

Immediate analgesic effect of needling acupoints(bilateral De Qi vs unilateral De Qi)on primary dysmenorrhea:a multi-center,randomized,controlled trail

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2016年第6期36卷 711-717页

作者： Wang Pei Zhang Peng Ma Liangxiao Yuan Hongwen Liu Yuqi Chi Lin Xin Siyuan Hu Nijuan Zhao Minyi zhu jiang School of Acupuncture Moxibustion and Tuina Beijing University of Chinese Medicine Beijing 100029 China School of Traditional Chinese Medicine Capital Medical University Beijing 100069 China Department of Chinese Medicine Beijing Tongren Hospital Affiliated to Capital Medical University Beijing 100730 China Institute of Basic Clinical Medicine China Academy of Traditional Chinese Medicine Beijing 100700 China Teaching and Research Section of Acupunc-ture-moxibustion and Tuina Chengde Medical CollegeChengde 067000 China

OBJECTIVE: To analyze the effect of needling acupoints(bilateral vs unilateral) with De Qi using data collected from 501 primary dysmenorrhea(PD) patients participating in multi-center, randomized,controlled trail.METHODS: De Qi was defined as at least one of the feelings in soreness, numbness, fullness or heaviness at the acupoints when stimulated with needles. The 501 patients were grouped in 3 groups in terms of De Qi or not De Qi in one side(unilateral)or both sides(bilateral) of the body: bilateral De Qi group, unilateral De Qi group, and non-De Qi group. The abdominal pains were measured using visual analog scale(VAS).RESULTS: In 501 patients, 472 acquired De Qi at unilateral acupoints, 24 De Qi at bilateral acupoint,and 5 had no De Qi at any acupoint. The data of non-De Qi group was excluded as the sample was less than 5% of that in the bilateral De Qi group.There was significant difference in the VAS before and after treatment between unilateral and bilateral De Qi group(P < 0.01). After stratified by acupoints, for the patients needled at Sanyinjiao(SP 6)and Xuanzhong(GB 39), VAS scores in the bilateral De Qi group were larger than those in the unilateral De Qi group(P < 0.05).CONCLUSION: Bilateral De Qi was possibly superior to unilateral De Qi in enhancing the immediate analgesic effect of needling the acupoints, but no statistical significance was observed on the pa-tients of needling at non acupoint, which preliminarily suggested this immediate analgesic effect was perhaps along meridians.

关键词： Arrival of Qi Needling sensation Dysmenorrhea Visual analog scale Randomized controlled trail

在线全文

学校读者我要写书评

暂无评论

森林粗木质残体分解研究进展

植物生态学报 2024年第5期48卷 541-560页

作者：常晨晖朱彪朱江玲吉成均杨万勤北京大学城市与环境学院生态研究中心地表过程分析与模拟教育部重点实验室北京100871 台州学院生命科学学院浙江台州318000

森林粗木质残体主要包括倒木、枯立木、大枯枝、树桩和粗根等,它们是绝大多数森林生态系统的结构性成分,在全球碳循环和生物多样性保育等方面发挥着不可替代的作用。特别是近些年,极端高温、干旱、热带气旋等极端气候事件正在加速树木死... 详细信息

森林粗木质残体主要包括倒木、枯立木、大枯枝、树桩和粗根等,它们是绝大多数森林生态系统的结构性成分,在全球碳循环和生物多样性保育等方面发挥着不可替代的作用。特别是近些年,极端高温、干旱、热带气旋等极端气候事件正在加速树木死亡,改变森林粗木质残体形成的方式和分解过程,森林生态系统功能和稳定性也会受到深刻影响,生态学家对此也越来越重视。如今,生态学家通过野外观测和控制实验,围绕粗木质残体的分解特征、调控机制和分解过程中粗木质残体上的生物多样性开展了大量研究,促进了粗木质残体生态学的快速发展。该文首先汇总了最常见的用于森林粗木质残体分解过程的研究方法,并且描述了各研究方法适用的情景。其次,从形态、物理和化学性状方面探讨了粗木质残体的分解特征。然后,围绕着影响森林粗木质残体分解的控制因素,系统梳理和总结了已取得的研究结果。具体来说,粗木质残体分解主要受到基质质量、分解者和环境条件的调控,其中基质质量和分解者在样点尺度上影响着分解过程,基质质量对分解者群落有自下而上的调控作用,环境条件在区域或更大研究尺度上发挥主导作用。粗木质残体在分解的同时孕育了数量巨大、种类丰富的生物,主要类群包括苔藓类附生植物、细菌、真菌和无脊椎动物。无脊椎动物对森林粗木质残体的利用方式最为复杂,可能将其作为栖息地、掩蔽所、繁殖地、取食场所。附生植物的演替过程与分解时间正相关,但与腐烂程度联系不紧密,其他生物类群的演替则更多地受到基质质量的影响。由于以往的综述鲜有涉及不同结构组分(树皮和木质部)分解的研究进展,该文补充和探讨了树皮和木质部的分解特征和潜在的相互作用过程。由于粗木质残体分解缓慢的特点和研究方法的限制,目前许多机理的相关研究仍不够深入,该文围绕粗木质残体分解机制和生物多样性保育功能探讨了未来需要重点关注的研究内容及可能的研究方法。

关键词：分解速率树皮木质部分解时期功能性状大小效应