检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

质量管理微信小程序在建筑施工中的应用

北方建筑 2022年第4期7卷 74-78页

作者：谢燕武张晓峰迟晓宇中建幕墙有限公司湖北武汉430000

针对建筑幕墙施工过程中质量管理人员缺位、整改拖延、资料丢失等问题,探索将全面质量管理体系引入到移动端手机微信质量管理小程序信息化技术的可行性,解决了质量管理的信息化难题。本文分析了全面质量管理体系在施工过程中的优缺点,... 详细信息

针对建筑幕墙施工过程中质量管理人员缺位、整改拖延、资料丢失等问题,探索将全面质量管理体系引入到移动端手机微信质量管理小程序信息化技术的可行性,解决了质量管理的信息化难题。本文分析了全面质量管理体系在施工过程中的优缺点,总结了未来质量管理信息化、数据化、可视化的应用方向,提出了在手机端使用质量管理微信小程序的解决思路,特别是质量闭环管理。最后,结合工程项目的应用情况,明确了建筑幕墙质量管理提升的信息化方向。

关键词：移动端微信小程序闭环管理自动分析与统计

BIM及建筑CAD软件中几何造型内核的评估及应用研究

在线全文

学校读者我要写书评

暂无评论

土木建筑工程信息技术 2014年第3期6卷 1-8页

作者：迟小羽郑国勤王琳于贵友中国建筑科学研究院建研科技股份有限公司北京100013

三维建模和造型是BIM及建筑CAD类软件核心的产品功能之一,本文对以往及当今市场最具影响力的BIM及建筑CAD类软件中使用的几何内核造型器进行了调查和研究,并通过对三种主要几何内核的评估、对比、测试及使用,得出关于BIM软件开发中几何... 详细信息

三维建模和造型是BIM及建筑CAD类软件核心的产品功能之一,本文对以往及当今市场最具影响力的BIM及建筑CAD类软件中使用的几何内核造型器进行了调查和研究,并通过对三种主要几何内核的评估、对比、测试及使用,得出关于BIM软件开发中几何内核选择及应用的规律及建议,能够在一定程度上指导未来BIM类软件的产品设计及开发工作。

关键词：几何内核造型器 BIM CAD Geometry Kernel Modeler Parasolid ACIS OpenCASCADE

在线全文

学校读者我要写书评

暂无评论

健康青年人大脑皮质机能定位的活体CT研究

武警医学 2000年第9期11卷 515-518页

作者：李龙池晓宇黄新才蒋德清刘卫国武警广东总队医院放射科广州510507

目的　探讨活体CT图像上对大脑皮质机能区简单而准确的定位方法。方法　随机抽取 30例健康青年人的CT图像 ,以大脑白质的指状髓突为标志辨认大脑皮质机能区。结果　青年人大脑白质的指状髓突显示清楚 ,尤以增强扫描更易于辨认。只要认... 详细信息

目的　探讨活体CT图像上对大脑皮质机能区简单而准确的定位方法。方法　随机抽取 30例健康青年人的CT图像 ,以大脑白质的指状髓突为标志辨认大脑皮质机能区。结果　青年人大脑白质的指状髓突显示清楚 ,尤以增强扫描更易于辨认。只要认准髓突 ,包绕该髓突远端的皮质即为相应的机能区。以 8个典型CT图像表示其结果。结论　大脑白质的指状髓突是在健康青年人CT图像上识别大脑皮质机能区的一种标记。

关键词：大脑皮质机能定位 CT 影像解剖学

Research of multi-path routing based on network coding in space information networks

在线全文

学校读者我要写书评

暂无评论

chinese Journal of Aeronautics 2014年第3期27卷 663-669页

作者： Yu Geng Zhong Congjiu Lan xiaoyu Zhang chi Wei Lina Liu Yansong Department of Civil Aviation Shenyang Aerospace University

A multi-path routing algorithm based on network coding is proposed for combating long propagation delay and high bit error rate of space information networks. On the basis of traditional multi-path routing, the algorithm uses a random linear network coding strategy to code data pack- ets. Code number is determined by the next hop link status and the number of current received packets sent by the upstream node together. The algorithm improves retransmission and cache mechanisms through using redundancy caused by network coding. Meanwhile, the algorithm also adopts the flow distribution strategy based on time delay to balance network load. Simulation results show that the proposed routing algorithm can effectively improve packet delivery rate, reduce packet delay, and enhance network performance.

关键词： Flow distribution Multi-path routing Network coding Retransmission Space information networks

Acid–base Homeostasis and Implications to the Phenotypic Behaviors of Cancer

在线全文

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2023年第6期21卷 1133-1148页

作者： Yi Zhou Wennan Chang xiaoyu Lu Jin Wang chi Zhang Ying Xu Cancer Systems Biology Center China–Japan Union HospitalJilin UniversityChangchun 130033China Department of Biochemistry and Molecular Biology and Institute of Bioinformatics University of GeorgiaAthensGA 30602USA Department of Medical and Molecular Genetics Indiana University School of MedicineIndianapolisIN 46202USA Department of Electrical and Computer Engineering Purdue UniversityWest LafayetteIN 47907USA Department of Biohealth Informatics Indiana University–Purdue University IndianapolisIndianapolisIN 46202USA Departments of Chemistry and of Physics and Astronomy Stony Brook UniversityStony BrookNY 11794USA

Acid–base homeostasis is a fundamental property of living cells,and its persistent disruption in human cells can lead to a wide range of *** this study,we conducted a computational modeling analysis of transcriptomic data of 4750 human tissue samples of 9 cancer types in The Cancer Genome Atlas(TCGA)*** on our previous study,we quantitatively estimated the average production rate of OHby cytosolic Fenton reactions,which continuously disrupt the intracellular pH(pHi)*** predictions indicate that all or at least a subset of 43 reprogrammed metabolisms(RMs)are induced to produce net protons(H+)at comparable rates of Fenton reactions to keep the pHi *** then discovered that a number of wellknown phenotypes of cancers,including increased growth rate,metastasis rate,and local immune cell composition,can be naturally explained in terms of the Fenton reaction level and the induced *** study strongly suggests the possibility to have a unified framework for studies of cancerinducing stressors,adaptive metabolic reprogramming,and cancerous *** addition,strong evidence is provided to demonstrate that a popular view that Na+/H+exchangers along with lactic acid exporters and carbonic anhydrases are responsible for the intracellular alkalization and extracellular acidification in cancer may not be justified.

关键词： Acid-basehomeostasis Cancer microenvironment Metabolic reprogramming Fenton reaction Ironmetabolism

Urban expansion and intra-urban land evolution as well as their natural environmental constraints in arid/semiarid regions of china from 2000–2018

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

Journal of Geographical Sciences 2023年第7期33卷 1419-1441页

作者： PAN Tao KUANG Wenhui SHAO Hua ZHANG chi WANG xiaoyu WANG Xinqing School of Geography and Tourism Qufu Normal UniversityRizhao 276826ShandongChina Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyCASUrumqi 830011China Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection College of Resources and EnvironmentLinyi UniversityLinyi 276000ShandongChina

Rapid urbanization has occurred in arid/semiarid china,threatening the sustainability of fragile dryland ecosystems;however,our knowledge of natural environmental constraints on multiscale urban lands in this region is still *** solve this issue,this study retrieved 15-m multiscale urban *** indicated that urban area increased by 68%during 2000–2018,and one-third of the increase was contributed by only three large *** coverage of impervious surface area(ISA) and vegetated area(VA) increased by 16.6%and 1.38%,*** land-cover change may be helpful in suppressing wind erosion and sand *** also found that the newly urban lands had relatively lower ISA and higher VA than the old urban lands,indicating an improved human settlement *** environmental constraints on urban expansion were identified,with cities in oasis urban environments(OUEs) that had water supply expanding 150% faster than cities in desert urban environments(DUEs).Urban development was also constrained by terrain,with 73% of the ISA expansion occurring in relatively flat ***,the aggregated pattern of urbanization and the increase in ISA and VA in the newly urbanized lands have improved water-use efficiency and ecological services and benefited desert ecosystem protection in arid/semiarid china.

关键词： urbanization natural environmental constraints pixel and subpixel land change arid and semiarid regions of china

在线全文

学校读者我要写书评

暂无评论

基于卷积神经网络的人脸关键点检测算法设计

电子测量技术 2019年第24期42卷 125-130页

作者：石高辉陈晓荣刘亚茹戴星宇池笑宇李恒上海理工大学光电学院上海200093

人脸关键点检测是模式识别和计算机视觉等领域十分活跃的研究方向。为了解决人脸关键点检测问题并提高检测的准确度,提出了一种基于卷积神经网络的人脸关键点检测算法,设计了一个新的网络模型,针对神经网络可能出现的梯度弥散和梯度爆... 详细信息

人脸关键点检测是模式识别和计算机视觉等领域十分活跃的研究方向。为了解决人脸关键点检测问题并提高检测的准确度,提出了一种基于卷积神经网络的人脸关键点检测算法,设计了一个新的网络模型,针对神经网络可能出现的梯度弥散和梯度爆炸的问题进行了优化。新型网络主要分为两个部分,第一部分是对人脸的关键点的总体预测,确定出大概位置;第二部分是对各个关键点的细微调整,保证结果的准确。为了提高网络的鲁棒性,采用两个数据集进行训练,在较短的训练时间内得到一个比较可靠的网络模型。实验结果表明所提出的方法十分适合用做人脸关键点检测,准确率达96%。

关键词：深度学习人脸检测卷积神经网络 LFW数据集特征提取

应用于增强现实变电运检三维场景重建的增量八叉树算法

在线全文

学校读者我要写书评

暂无评论

应用科技 2020年第5期47卷 58-63页

作者：焦进迟小羽赖秋杨子力储园杨坤莲杨锐云南电网有限责任公司曲靖供电局云南曲靖655000 北京航空航天大学青岛研究院山东青岛266100 昆明埃舍尔科技有限公司云南昆明650000

为解决数字增强现实(AR)眼镜设备上海量点云数据管理和三维重建的难题,本文提出了一种增量八叉树算法。该算法可以均衡地将点云数据保存到空间索引结构中,实现实时渲染过程中点云数据的动态调度,使场景点云的密度分布与视场角和视点距... 详细信息

为解决数字增强现实(AR)眼镜设备上海量点云数据管理和三维重建的难题,本文提出了一种增量八叉树算法。该算法可以均衡地将点云数据保存到空间索引结构中,实现实时渲染过程中点云数据的动态调度,使场景点云的密度分布与视场角和视点距离线性相关,且有效降低了点云存储空间。利用Hololens增强现实眼镜对本文算法进行了测试验证,实验结果表明,利用本算法可以加载和调度十亿点云数量的变电站场景点云数据,并以不小于25 f/s的帧速率实时显示数字化场景。

关键词：数字孪生增强现实动态调度增量八叉树 Hololens 点云变电运检三维重建

Innate and adaptive immune abnormalities underlying autoimmune diseases:the genetic connections

在线全文

学校读者我要写书评

暂无评论

Science china(Life Sciences) 2023年第7期66卷 1482-1517页

作者： Xinxin chi Miaozhen Huang Hailin Tu Bin Zhang Xin Lin Huji Xu Chen Dong xiaoyu Hu Institute for Immunology&School of Medicine Tsinghua UniversityBeijing 100084China Department of Rheumatology and Immunology Shanghai Changzheng HospitalThe Second Military Medical UniversityShanghai 200433China Peking-Tsinghua Center for Life Sciences Tsinghua UniversityBeijing100084China Shanghai Immune Therapy Institute Shanghai Jiaotong University School of Medicine-affiliated Renji HospitalShanghai 200127China

With the exception of an extremely small number of cases caused by single gene mutations,most autoimmune diseases result from the complex interplay between environmental and genetic *** a nutshell,etiology of the common autoimmune disorders is unknown in spite of progress elucidating certain effector cells and molecules responsible for pathologies associated with inflammatory and tissue *** recent years,population genetics approaches have greatly enriched our knowledge regarding genetic susceptibility of autoimmunity,providing us with a window of opportunities to comprehensively re-examine autoimmunity-associated genes and possible *** this review,we aim to discuss etiology and pathogenesis of common autoimmune disorders from the perspective of human *** overview of the genetic basis of autoimmunity is followed by3 chapters detailing susceptibility genes involved in innate immunity,adaptive immunity and inflammatory cell death processes *** such attempts,we hope to expand the scope of thinking and bring attention to lesser appreciated molecules and pathways as important contributors of autoimmunity beyond the‘usual suspects’of a limited subset of validated therapeutic targets.

关键词： autoimmune diseases etiology pathogenesis innate immunity adaptive immunity