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痰热清注射液治疗慢性阻塞性肺疾病合并呼吸衰竭的系统评价

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世界中医药 2024年第5期19卷 638-644页

作者：叶东珂李素云杨建雅李宁姚富科河南中医药大学郑州450046 河南中医药大学第一附属医院呼吸与危重症医学科郑州450000

目的:对痰热清注射液应用于慢性阻塞性肺疾病伴呼吸衰竭的有效性及安全性做出系统评价和Meta分析。方法:检索国家知识基础设施数据库(CNKI)、中国生物医学文献数据库(CBM)、中国学术期刊数据库(CSPD)及中文科技期刊数据库(CCD)、PubMed... 详细信息

目的:对痰热清注射液应用于慢性阻塞性肺疾病伴呼吸衰竭的有效性及安全性做出系统评价和Meta分析。方法:检索国家知识基础设施数据库(CNKI)、中国生物医学文献数据库(CBM)、中国学术期刊数据库(CSPD)及中文科技期刊数据库(CCD)、PubMed、Cochrane Library、Web of Science、Embase医学文献数据库,筛选出痰热清注射液治疗慢性阻塞性肺疾病伴呼吸衰竭的随机对照试验,使用RevMan 5.4软件对纳入研究进行系统评价和Meta分析,并使用GRADE评价系统对结局指标质量进行分级。结果:本研究纳入13项临床研究,共1 007例患者,观察组505例,对照组502例;痰热清注射液联合西医常规-治疗慢阻肺伴呼吸衰竭患者,在临床总有效率(OR=3.52,95%CI为2.35~5.27,P<0.000 01)、动脉血气pH值(MD=0.04,95%CI为0.02~0.05,P<0.000 01)、氧分压(MD=7.86,95%CI为7.24~8.48,P<0.000 01)、二氧化碳分压(MD=-6.85,95%CI为-8.99~-4.77,P<0.000 01)、肿瘤坏死因子(TNF-α)(SMD=-2.56,95%CI为-4.11~-1.01,P<0.01)方面,联合痰热清注射液的观察组与对照组比较,差异有统计学意义(P<0.01);GRADE证据分级提示,GRADE证据分级结果提示,总有效率、动脉血气pH值、动脉血气氧分压、动脉血气二氧化碳分压为低级质量证据,肿瘤坏死因子-α(TNF-α)为极低质量证据。结论:西医常规结合痰热清注射液治疗慢阻肺合并呼吸衰竭可以提高临床治疗总有效率,改善低氧血症和(或)二氧化碳潴留,减轻炎症状况,安全性较好,值得推广应用。

关键词：慢性阻塞性肺疾病急性加重呼吸衰竭痰热清注射液动脉血气系统评价 Meta分析

Double Position Servo Synchronous Drive System Based on Cross-Coupling Integrated Feedforward Control for Broacher

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Chinese Journal of Mechanical Engineering 2017年第2期30卷 272-285页

作者： Wenqi LU Kehui JI Hanqing DONG jianya ZHANG Quanwu WANG Liang GUO Faculty of Mechanical Engineering and Automation Zhejiang Sci-Tech University College of Electrical Engineering Zhejiang University

Synchronization errors directly deteriorate the machining accuracy of metal parts and the existed method cannot keep high synchronization precision because of external disturbances. A new double position servo synchronous driving scheme based on semi-closed-loop cross- coupling integrated feedforward control is proposed. The scheme comprises a position error cross-coupling feedfor-ward control and a load torque identification with feed- forward control. A digital integrated simulation system for the dual servo synchronous drive system is established. Using a 20 t servo broacher, performance analysis of the scheme is conducted based on this simulation system and the simulation results show that systems with traditional parallel or single control have problems when the work- table works with an unbalanced load. However, the system with proposed scheme shows good synchronous perfor- mance and positional accuracy. Broaching tests are performed and the experimental results show that the maximum dual axis synchronization error of the system is only 8μm during acceleration and deceleration processes and the error between the actual running position and the given position is almost zero. A double position servo synchronous driving scheme is presented based on crosscoupled integrated feedforward compensation control, which can improve the synchronization precision.

关键词： Broacher Double drive system Cross coupling position servo synchronous Integrated feedforward

KING GEORGE ISLAND SPATIAL DATA MODEL

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Geo-Spatial Information Science 2001年第2期4卷 63-69页

作者： CHEN Nengcheng GONG jianya LIESMARS Wuhan University

Distribution,interoperability,interactivity,component are four main features of distributed *** on the principle of hypermap,hypermedia and distributed database,the paper comes up with a kind of distributed spatial data model which is in accordance with those features of distributed *** model takes catalog service as the outline of spatial information globalization,and defines data structure of hypermap node in different *** on the model,it is feasible to manage and process distributed spatial information,and integrate multi_source,heterogeneous spatial data into a ***,to retrieve and access spatial data via Internet is only by theme or map *** the concept of the model,it is possible to retrieve,load,and link spatial data by vector_based graphics on the Internet.

关键词： King George Island distribution GIS hypermap data model interoperability

AN INTEGRATED DATA MODEL IN THREE DIMENSIONAL GIS

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Geo-Spatial Information Science 1999年第1期2卷 1-8,15页

作者： Gong jianya Xia Zongguo National Laboratory for Information Engineering in Surveying Mspping and Remote Sensing WTUSM

The current GIS can only deal with 2-D or 2.5-D information on the earth surface. A new 3-D data structure and data model need to be designed for the 3-D GIS. This paper analyzes diverse 3-D spatial phenomena from mine to geology and their complicated relations, and proposes several new kinds of spatial objects including cross-section, column body and digital surface model to represent some special spatial phenomena like tunnels and irregular surfaces of an ore body. An integrated data structure including vector, raster and object-oriented data models is used to represent various 3-D spatial objects and their relations. The integrated data structure and object-oriented data model can be used as bases to design and realize a 3-D geographic information system.

关键词： 3-D geographic information system object-oriented data model vector raster

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中国高等教育现代化水平测度与空间分布研究

浙江科技学院学报 2024年第4期36卷 287-297页

作者：章迪平王心童顾建亚浙江科技大学理学院杭州310023 浙江科技大学马克思主义学院杭州310023

为探究中国高等教育现代化建设水平及其空间差异,首先从办学规模、办学条件、国际化程度、社会效益四个方面构建高等教育现代化评价指标体系;然后采用熵权-TOPSIS法(technique for order preference by similarity to an ideal solution... 详细信息

为探究中国高等教育现代化建设水平及其空间差异,首先从办学规模、办学条件、国际化程度、社会效益四个方面构建高等教育现代化评价指标体系;然后采用熵权-TOPSIS法(technique for order preference by similarity to an ideal solution,优劣解距离法)对2011—2021年中国高等教育现代化建设水平进行测算,并借助Dagum基尼系数、核密度估计和莫兰指数来分析“十二五”“十三五”及“十四五”开局之年中国高等教育现代化建设水平的区域差异、演变趋势及空间分布特征。研究发现:中国高等教育现代化建设水平整体呈上升趋势且存在较大的提升空间,区域呈现由东部—中部—西部递减的阶梯状分布;整体存在明显的空间差异与集聚现象,差异主要来源于区域间差异,极化现象表现为“高高”集聚省份多在东部地区,“高低”集聚省份多在西部地区。本研究结果可为高等教育现代化的实现提供实证依据,并为国家制定高等教育现代化发展政策提供可行性建议。

关键词：高等教育现代化评价指标体系 Dagum基尼系数核密度分析空间自相关

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湖北省林木种质资源保存区划研究

湖北大学学报（自然科学版） 2024年第3期46卷 330-338页

作者：汪建亚杨春惠吴昊汪明湖北省林业科技推广中心湖北武汉430079 湖北省林业局林木种苗管理总站湖北武汉430079

林木种质资源是林业的战略资源,是生物多样性和林木育种创新的基础。本研究根据湖北省林木种质资源第二次普查数据对湖北省林木种质资源保存区划进行系统研究,结果将湖北省划分为5个林木种质资源保存区,即鄂西北山地丘陵保存区、鄂西南... 详细信息

林木种质资源是林业的战略资源,是生物多样性和林木育种创新的基础。本研究根据湖北省林木种质资源第二次普查数据对湖北省林木种质资源保存区划进行系统研究,结果将湖北省划分为5个林木种质资源保存区,即鄂西北山地丘陵保存区、鄂西南山地保存区、鄂东北低山丘陵保存区、江汉平原保存区和鄂东南低山丘陵保存区,并对各区林木种质资源概况、珍稀濒危树种、常见栽培树种及需加强保护的树种资源等进行分区布局研究,同时对各区的资源保存方式给予系统建议。该区划为湖北省制定今后一段时期的林木种质资源保护利用方案、规划决策等提供科学依据,对促进我省建立不同区域的林业生态经济具有积极作用。

关键词：林木种质资源区划珍稀濒危树种

Reversed and Bidirectional Irrigation Methods for Equal-Scale Virtual Network Embedding Problem

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China Communications 2012年第11期9卷 127-136页

作者： Huang Tao liu Jiang Chen jianya liu Yunjie Key Laboratory of Universal Wireless Communications of Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 P. R. China Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing 100876 P. R. China

Previous Virtual Network (VN) embedding researches mostly focus on developing heuristic algorithms to enhance the efficiency of a physical resource. However, in the equal-scale condition, where the scale of a VN is similar to that of a substrate network, the number of successfully mapped VNs decreases sharply since bottlenecks form easily in the substrate network and disturb the embedding process. In this paper, reversed and bidirectional irrigation methods are proposed for the equal-scale and all-scale conditions. The two proposed methods can be combined with most of the existing heuristic algorithms and map a relatively large number of VNs by reducing the potential substrate bottlenecks. The simulation results show that the reversed irrigation method almost doubles the successfully mapped Revenue than the traditional one in the equal-scale condition. Meanwhile, the bidirectional irrigation method achieves the synthetically best performance in almost all scale conditions.

关键词： VN embedding equal-scale reversed irrigation bidirectional irrigation

A Topology-Cognitive Algorithm Framework for Virtual Network Embedding Problem

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China Communications 2014年第4期11卷 73-84页

作者： HUANG Tao liu Jiang CHEN jianya liu Yunjie State Key Laboratory of Networking and Switching Technology Beijing University of Post and Telecommunications Beijing 100876 China Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing 100876 China

The virtual network embedding/mapping problem is an important issue in network virtualization in Software-Defined Networking(SDN).It is mainly concerned with mapping virtual network requests,which could be a set of SDN flows,onto a shared substrate network automatically and *** researches mainly focus on developing heuristic algorithms for general topology virtual *** practice however,the virtual network is usually generated with specific topology for specific ***,it is a challenge to optimize the heuristic algorithms with these topology *** order to deal with this problem,we propose a topology-cognitive algorithm framework,which is composed of a guiding principle for topology algorithm developing and a compound *** compound algorithm is composed of several subalgorithms,which are optimized for specific *** develop star,tree,and ring topology algorithms as examples,other subalgorithms can be easily achieved following the same *** simulation results show that the topology-cognitive algorithm framework is effective in developing new topology algorithms,and the developed compound algorithm greatly enhances the performance of the Revenue/Cost(R/C) ratio and the Runtime than traditional heuristic algorithms for multi-topology virtual network embedding problem.

关键词： network virtualization software- defined networking virtual network embedding topology-cognitive

围孕期叶酸补充对子代6岁智商影响及孕期坚果摄入和母乳喂养的效应修饰作用

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中国公共卫生 2024年第1期40卷 29-35页

作者：苏慧佳谢珍珍孙松林陈瑶奚健雅梁红袁伟纪红蕾上海市生物医药技术研究院国家卫生健康委员会计划生育药具重点实验室上海市疾病与健康基因组学重点实验室上海200237

目的评估母亲围孕期叶酸补充与子代远期智力发育的关联,并检验孕期食用坚果和母乳喂养对该关联可能产生的效应修饰作用。方法2012年4—12月上海闵行出生队列建立时,通过结构式问卷收集母亲围孕期叶酸补充情况、坚果食用频率等信息;子代... 详细信息

目的评估母亲围孕期叶酸补充与子代远期智力发育的关联,并检验孕期食用坚果和母乳喂养对该关联可能产生的效应修饰作用。方法2012年4—12月上海闵行出生队列建立时,通过结构式问卷收集母亲围孕期叶酸补充情况、坚果食用频率等信息;子代出生后,通过随访收集纯母乳喂养时长等信息,并于子代6岁时,由经过专业培训的调查员利用第四版《韦氏儿童智力量表》中文版简版对其进行智力水平测试。最终纳入信息完整的530对母子,采用多因素线性回归模型分析母亲围孕期叶酸补充与子代6岁智商分数的关联,并探讨母亲孕期坚果食用频率及产后纯母乳喂养时长的潜在效应修饰作用。结果多因素分析结果显示,对于母亲围孕期叶酸补充的子代,其知觉推理分数提高4.57分(95%CI=0.13~9.02)。母亲孕前开始补充叶酸与孕后开始补充叶酸与子代知觉推理分数关联的效应值相近,分别为4.41(95%CI=-0.25~9.07)和4.71(95%CI=0.11~9.31)。另外,上述关联在母亲孕期坚果食用频率≤2 d/周、纯母乳喂养时长<6个月的研究对象中更强;前者,母亲围孕期补充叶酸的子代知觉推理分数提高5.80分(95%CI=0.52~11.08),后者母亲围孕期补充叶酸的子代知觉推理分数提高6.36分(95%CI=0.89~11.83)。结论母亲围孕期叶酸补充与子代6岁时知觉推理分数的提高有关,提示围孕期叶酸补充对子代远期智力发育的保护作用。该保护作用在母亲孕期坚果食用频率≤2 d/周或子代纯母乳喂养时长<6个月的研究人群中更强。

关键词：叶酸围孕期子代智商效应修饰队列研究