检索结果-南通市图书馆

International Journal of Ophthalmology(English edition) 2024年第4期17卷 653-658页

作者： Tran Tat Thang Pham Hong Phuong Nguyen Sa Huynh Nguyen Trung Kien NguyenDuy Toan Nguyen Thi Thu ha le ha Khoa Nguyen Huu Dung Thai Doan Thang le Viet Thang Nghe An Eye Hospital Nghe An 43000Vietnam Nghe An Friendship General Hospital Nghe An 43000Vietnam Military Hospital 103 Ha Noi 100000Vietnam Vietnam Military Medical University Ha Noi 100000Vietnam hanoi Medical University Ha Noi 100000Vietnam Bạch Mai Hospital Ha Noi 100000Vietnam TTH Vinh General Hospital Nghe An 100000Vietnam

AIM:To determine the dry eye(DE)rate and its relationship with disease stage in patients with primary ***:A cross-sectional study included 432 patients with primary hypertension(with an equal number of patients in each group:144 in stage Ⅰ,Ⅱ,and Ⅲ hypertension)and 144 healthy subjects as a control *** Ocular Surface Disease Index(OSDI)and Schirmer Ⅰ test without anesthetics were conducted on all 576 *** with OSDI scoreshan in the control group(41.7%versus 18.8%;Plevels in hypertension patients with DE were higher than those without DE,Plevated plasma creatinine,and CRP-hs levels were independent factors associated with DE in primary hypertension patients,Plevated plasma CRP-hs,and creatinine levels in patients with primary hypertension.

关键词： primary hypertension dry eye stage of hypertension plasma creatinine

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

越南学生汉语动物成语习得偏误分析

越南学生汉语动物成语习得偏误分析

作者： TRUONG le ha NHU 重庆交通大学

学位级别：硕士

汉语成语一直被认为是中华文化的精华,是汉语学习过程中不可忽视的一部分。现在学习汉语的越南人越来越多。对越南学生来说,仅会简单说一点汉语是不够的,他们希望了解更多成语,更深层次地了解汉语成语背后的文化,提高汉语运用能力。但... 详细信息

汉语成语一直被认为是中华文化的精华,是汉语学习过程中不可忽视的一部分。现在学习汉语的越南人越来越多。对越南学生来说,仅会简单说一点汉语是不够的,他们希望了解更多成语,更深层次地了解汉语成语背后的文化,提高汉语运用能力。但由于动物成语的丰富性、结构的稳定性、意义的整体性和语法功能的多样性以及汉语文化背景、风俗习惯的多元性,再加上两国的地理环境及国家的民族思维方式存在差异,两国人民对同一种动物的联想在认知和理解上也存在很多差异。这导致越南学生很难掌握动物成语知识,在应用成语中常常出现偏误。因此,笔者作为越南学生,为了帮助越南学生更深入地学习和理解汉语动物成语,拟研究越南学生在汉语动物成语习得过程中遇到的偏误,归纳偏误类型,分析偏误原因并提出针对性的学习策略。本研究通过深入分析汉语与越南语动物成语的构词特点和文化内涵差异,揭示了语言结构和文化背景理解不足是导致越南学生在学习汉语动物成语时产生偏误的主要原因。通过设计并实施调查问卷,详细分析了越南学生在汉语动物成语学习中的具体偏误类型,包括语义偏误、语法偏误和语用偏误。调查结果显示,这些偏误不仅影响了学生运用语言的准确性,也限制了他们对汉语文化深层次的理解。针对发现的问题,本文提出了相应的对策,旨在帮助越南学生克服学习障碍,深化对汉语动物成语及其背后文化的理解。这些对策包括加强文化背景知识学习、采用成语分类和归纳法,以及通过多样化的学习活动和资源创造丰富的学习环境。研究强调通过多媒体资源、实践互动和中越文化交流活动等手段,激发学生的学习兴趣,提高其汉语成语的实际应用能力。本研究对于汉语作为第二语言的教学实践具有重要意义。通过实施本研究提出的学习对策,不仅可以有效减少越南学生在汉语成语学习中的偏误,还可以促进中越文化的交流与理解,为越南学生提供一条深入学习汉语、提升跨文化交际能力的有效途径。

关键词：越南学生动物成语偏误分析学习策略

An Automatically Filtering Blacklist Model of Social Network Based on Semantic Web

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Journal of harbin Institute of Technology(New Series) 2014年第6期21卷 67-73页

作者： le ha Guo-Zi Sun College of Computer Nanjing University of Posts & Telecommunications Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks

According to the features of the semantic web technology,it is very suitable to solve the security issue of the current social network ***,in this paper,it extends the existing ontology model of the social network with some relevant classes,and introduces a brand new ontology which is used to represent the malicious *** introducing these models,a method of identifying the malicious message is ***,the experiments and simulations analyze the feasibility of the whole *** results validate that the malicious users can be automatically filtered,and some worthy digital evidence can be effectively provided to forensic investigators.

关键词： social network semantic web ontology OWL digital evidence

A TCP Performance Enhancement Scheme in Infrastructure based Vehicular Networks

在线全文

学校读者我要写书评

暂无评论

China Communications 2015年第6期12卷 73-84页

作者： ha le FANG Lijin BI Yuanguo LIU Wei Northeastern University Shenyang Ligong University

Transmission Control Protocol （TCP） in infrastructure based vehicular net- works is dedicated to support reliable Intemet services for mobile users. However, an end-to- end TCP flow not only experiences some com- mon challenges in wireless mobile networks, such as high packet loss rate, medium access competition, unstable wireless bandwidth, and dynamic topology, etc., but also suffers from performance degradation due to traffic congestion at the Road-Side Units （RSUs） that connect the wireline and wireless networks. In order to address the challenging issues related to reliable TCP transmissions in infrastruc- ture based vehicular networks, we propose an RSU based TCP （R-TCP） scheme. For wireline source nodes, R-TCP adopts a novel flow control mechanism to adjust transmission rates according to the status of bottleneck link. Specifically, during the short wireless connec- tion time in Infrastructure based vehicular net- works, R-TCP quickly chooses an ideal trans- mission rate for data transmissions instead of activating the slow start algorithm after the connection is established, and successfully avoids the oscillation of the transmission rate. Simulation results show that R-TCP achieves great advantages than some relate proposals in terms of throughput, end-to-end delay, and packet loss rate.

关键词： rate control bottleneck node packet loss infrastructure based vehicular net-works

Polygonatum kingianum rhizome extract alleviates collagen antibody-induced arthritis by modulating proinflammatory cytokine production in mice

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2020年第11期10卷 490-495页

作者： Huyen Do Thi Thanh Phuong Ngo Thi Hien Nguyen Thi Thu Nga Nguyen Thi Hung le Ngoc Thao DoThi ha le Minh Graduate University of Science and Technology Vietnam Academy of Science and Technology18 Hoang Quoc VietNghia DoCau GiayHanoiVietnam Institute of Natural Products Chemistry Vietnam Academy of Science and Technology18 Hoang Quoc VietNghia DoCau GiayHanoiVietnam hanoi Open University101 Nguyen Hien str Hai Ba Trung Dist.HanoiVietnam Laboratory of Bioassay Institute of BiotechnologyVietnam Academy of Science and Technology18 Hoang Quoc VietNghia DoCau GiayHanoiVietnam Chemistry Lab Project Center for Research and Technology transferVietnam Academy of Science and Technology18 Hoang Quoc VietNghia DoCau GiayHanoiVietnam

Objective: To evaluate the anti-arthritic effects of Polygonatum kingianum rhizome extract using both in vitro and in vivo ***: Lipopolysaccharide-induced RAW 264.7 macrophages were treated with an ethanol extract of Polygonatum kingianum rhizomes at different concentrations to determine nitric oxide and prostaglandin E2(PGE2) production. For in vivo study, Polygonatum kingianum ethanol extract was further investigated for its antiinflammatory effect in a mouse model with collagen antibodyinduced arthritis. Phytochemical study of Polygonatum kingianum ethanol extract was also ***: Saponins(142 mg/g total yield) was the main component in the Polygonatum kingianum ethanol extract. 5α,8α-ergosterol peroxide,(E,E)-9-oxooctadeca-10,12-dienoic acid and 3-(2?-hydroxy-4?-methoxy-benzyl)-5,7-dihydroxy-8-methyl-chroman-4-one were isolated from the extract. Polygonatum kingianum ethanol extract exhibited potential anti-inflammatory effects by inhibiting nitric oxide and PGE2 production in RAW 264.7 cells in a dosedependent manner. The level of arthritis in mice with collagen antibody-induced arthritis was significantly reduced(Phanol extract, particularly at a dose of 1 000 mg/kg body weight. Besides, the extract demonstrated the regulatory effects on serum tumor necrosis factoralpha, interleukin-6, and interleukin-10 in treated ***: Polygonatum kingianum ethanol extract has beneficial effects on inflammatory cytokine regulation and PGE2 inhibition in an experimental mouse model with collagen antibody-induced arthritis. The phytochemical screening reveals that the saponin, as the main component, and sterols(daucosterol and 5α,8α-ergosterol peroxide) from Polygonatum kingianum ethanol extract may contribute to its promising in vitro and in vivo anti-inflammatory activities.

关键词： inflammatory cytokine PGE2

考虑生态环境因素的农业生产效率——来自我国各省、区、市2003～2011年的实证分析

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

系统工程 2016年第5期34卷 102-111页

作者：哈乐群陕西理工学院管理学院陕西汉中723001

农业生产对环境的污染日益严重。将生态环境因素纳入农业生产效率的考察是研究的新方向。本文采用DEA的方法,将化肥和农药的流失作为非期望产出,构建线性规划模型,对我国31个省、区、市2003-2011年的数据进行实证分析,结果表明：北京、... 详细信息

农业生产对环境的污染日益严重。将生态环境因素纳入农业生产效率的考察是研究的新方向。本文采用DEA的方法,将化肥和农药的流失作为非期望产出,构建线性规划模型,对我国31个省、区、市2003-2011年的数据进行实证分析,结果表明：北京、天津、上海等11个省份的农业生产效率达到了DEA有效;有些省份未达到DEA有效的原因是自然条件的束缚,如陕西、宁夏等;有些省份是由于农业支持力度不够,如内蒙古和辽宁;环境因素是造成其非DEA有效的普遍原因,针对这些情况,本文给出了具体的改进目标。

关键词：生态环境因素农业生产效率非期望产出

在线全文

学校读者我要写书评

暂无评论

汉越度量形容词特定句法框架之比较

汉越度量形容词特定句法框架之比较

作者：何励（ha le）华中师范大学

学位级别：硕士

本论文主要内容,共有六章和二十小节,从表和里两个方面,讨论汉语和越南语度量形容词特定的六个句法框架。第一章分成四节,说明了汉语度量形容词的概念与划分、度量形容词的特殊性、句法框架结构及汉语和越南语结构句法功能的比较。第二... 详细信息

本论文主要内容,共有六章和二十小节,从表和里两个方面,讨论汉语和越南语度量形容词特定的六个句法框架。第一章分成四节,说明了汉语度量形容词的概念与划分、度量形容词的特殊性、句法框架结构及汉语和越南语结构句法功能的比较。第二章共有三节,讨论和比较“有+数词+度量衡单位+A”结构的组合顺序、组合成分、语义表达。第三章分成三节,首先讨论“多/余”进入“数量形结构”受数词约束,然后分析和比较“数词+度量衡单位+多/余+A”结构的组合成分和语义表达。第四和第五章分别讨论和比较两个句法框架“数词+度量衡单位+来+A”、“数词+度量衡单位+半+A”的组合顺序、组合成分及语义表达。第六章共有四节,讨论和比较“有+数词+个体量词+名词+A”结构的组合顺序、组合成分、句法功能及语义表达。另外,论文还有前言和结语。前言部分阐述研究目的、研究现状、研究范围、研究方法及语料来源。结语部分总结本论文内容,提出汉语和越南语在度量形容词方面的共同点与特点。

关键词：度量形容词句法框架比较数量结构

Summer extreme precipitation patterns and synoptic-scale circulation precursors over the Tibetan Plateau

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2024年第5期67卷 1625-1638页

作者： Zhiyuan DING Yao ha Zhong ZHONG College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073China Key Laboratory for Virtual Geographic Environment School of Geography ScienceNanjing Normal UniversityNanjing 210023China Jiangsu Collaborative Innovation Center for Climate Change School of Atmospheric SciencesNanjing UniversityNanjing 210023China

In the context of global warming,the extreme summer precipitation over the Tibetan Plateau(TP)has changed *** this study,the summer(June–August)extreme precipitation on the TP was classified into three spatial types by applying the K-means clustering method to the Third Pole Region long time-series high-resolution(1/30°)precipitation dataset(TPHi Pr,1979–2020).The characteristics of the circulation anomalies and precursors corresponding to the extreme precipitation on the TP in summer during 1979–2020 were *** results showed that the summer extreme precipitation of the TP can be categorized into northwestern(NW),southeastern(SE),and southern Himalayan(HS)types based on extreme precipitation *** NW and SE types are mainly influenced by anomalous signals in the mid-to-high latitude regions upstream of them,whereas the HS type is controlled by the localized subtropical anomalous *** the 8th day before the onset of the NW type,an anomalous cyclone was observed in the western Atlantic Ocean(60°W,50°N),which triggered the west-to-east quasi-latitudinal propagation of Rossby *** the onset day of the NW type,the upper troposphere showed positive-negative-positive geopotential height anomalies along the latitudinal 40°N from the Caspian Sea,the western part of Xinjiang,to the northeastern *** entered from the Arabian Sea along the southeastern edge of the anomalous cyclone on the southwestern TP and converged in the northwestern *** to the NW type,the precursors of the SE type appeared at higher latitudes and were more *** the 8th day before the onset of the SE type,an anomalous cyclone occurred near Greenland(60°W,70°N)and excited Rossby waves propagating *** the onset day of the SE type,the upper troposphere showed negative-positive-negative geopotential height anomalies across Eurasia from the Ural Mountains and the Iranian Plateau to the northern TP in the northwest-southeast directi

关键词： Tibetan Plateau Summer extreme precipitation Atmospheric circulation anomaly Precursor Teleconnection wave train

在线全文

学校读者我要写书评

暂无评论

基于多传感器信号传输网络的TCP增强方法

沈阳工业大学学报 2017年第1期39卷 78-82页

作者：哈乐房立金东北大学机械工程与自动化学院沈阳110819

为了解决多传感器信号传输中端到端TCP协议存在的如高丢包率、带宽不稳定、动态拓扑以及存在由于多信号同时传输产生拥堵,导致网络传输性能降低等问题,提出了一种基于多传感器信号传输网络的传输控制协议M-TCP.M-TCP采用了一种基于瓶颈... 详细信息

为了解决多传感器信号传输中端到端TCP协议存在的如高丢包率、带宽不稳定、动态拓扑以及存在由于多信号同时传输产生拥堵,导致网络传输性能降低等问题,提出了一种基于多传感器信号传输网络的传输控制协议M-TCP.M-TCP采用了一种基于瓶颈节点信息反馈的新的流量控制机制,取消了慢启动探测网络带宽阶段,在连接建立后便采用较理想的发送速率进行数据传输,成功避免了传输振荡.结果表明,M-TCP在数据吞吐量、丢包率和传输延迟等方面具有较大优势,能够很好地提升传输网络的传输性能.

关键词：多传感器信号传输网络流量控制瓶颈节点信息反馈数据吞吐量丢包率传输延迟

BP网络算法在平面运动测量误差补偿中的应用

在线全文

学校读者我要写书评

暂无评论

沈阳工业大学学报 2016年第1期38卷 86-90页

作者：哈乐房立金东北大学机械工程与自动化学院沈阳110819

在航天对接试验平台开发项目中,针对平面运动物体非接触高精度测量的难点,提出一种针对物体三自由度平面运动的创新性测量方法.利用激光测距传感器的并联组合,实现对物体位置和姿态的非接触式测量.以传感器测量值为输入样本,运用BP神经... 详细信息

在航天对接试验平台开发项目中,针对平面运动物体非接触高精度测量的难点,提出一种针对物体三自由度平面运动的创新性测量方法.利用激光测距传感器的并联组合,实现对物体位置和姿态的非接触式测量.以传感器测量值为输入样本,运用BP神经网络算法建立误差模型,通过调整权值因子使建立的网络模型能够拟合出测量误差,从而修正测量的数学模型.基于BP神经网络的误差补偿方法对平面运动物体测量误差的补偿具有明显的效果,能够满足位姿测量的精度要求.

关键词：并联测量激光测距非接触传感器 BP神经网络算法误差模型权值因子误差补偿