Results 11 to 20 of about 25,354 (263)

基于BIM技术的装配式结构设计方法探析

open access: yes工程建设, 2023
随着科学技术的快速进步,BIM技术水平得到显著提升,并在各领域推广与应用,尤其是建筑工程方面。BIM技术在建筑工程中有很强的作用与功能,可以为建筑工程管理、设计、施工等提供有力的技术支撑。随着装配式建筑的兴起与发展,以往在装配式结构设计方面使用的传统方法其缺点逐渐显露出来,这些问题若不加以解决,便会影响设计方案的有效性与可行性,也会给相关企业带来一定的经济损失。若将BIM技术应用到装配式结构设计中,可以很好地规避设计问题,还能及时排除潜在的风险,这对于确保企业效益和工程质量有着重要的意义。
春洪 郭
semanticscholar   +1 more source

乘波前体三维内转进气道气动融合设计 [PDF]

open access: yes, 2018
在传统三维内乘波进气道设计方法的基础上,发展了一种具有乘波压缩特征的前体三维内转进气道气动融合设计方法。通过构造合适的双波入射基本流场,结合斜激波理论,可以推导出一种上游二维乘波流动叠加下游三维内收缩流动的基准流场。在此流场基础上进行流线追踪与气动融合设计,获得了一种乘波前体加三维内转进气道的气动布局方案。对该进气道方案数值模拟研究结果表明:在Ma6.0的设计状态下,该方案流量捕获系数能够达到0.96,总压恢复系数为0.53;而在Ma4.0的非设计状态,该方案流量捕获系数能够达到0.71 ...
尤延铖   +3 more
core   +1 more source

Urban Ergonomics: A design science on spatial experience quality [PDF]

open access: yes, 2022
Urban Ergonomics is a design science driven by modern ergonomic data. It reacts to the challenges to architecture posed by changes, emergencies and advancements of the contemporary world, signifying a return to architectural humanism powered by new ...
Huishu Deng   +5 more
core   +1 more source

Decentralized PID Controller Design Based on Decoupled System for TITO Processes [PDF]

open access: yes, 2017
介绍一种在工业过程中两输入两输出(TITO)系统控制器的设计及调节方法,提出一种逆向解耦方法,该方法能对具有耦合对象的系统有效的解耦成对角矩阵,; 以减小各回路之间的耦合影响,解耦矩阵因其结构上较为复杂、物理上不易实现等特点,因此在不加入解耦矩阵的情况下,利用解耦后的对角矩阵对TITO系统进; 行分散PID控制器的独立设计。首先通过一阶加时滞的模型方法对对角矩阵元素降阶,并对降阶后的模型采用内模控制方法进行控制器各回路PID的参数整定,; 最后,通过仿真验证了所设计的控制器具有较好的动态性能 ...
吉国力, 郑义民, 金福江
core   +1 more source

Nonmedical cannabis legalization policy in Canada: Has commercialization been a pivotal mistake for public health?

open access: yesWorld Medical &Health Policy, Volume 17, Issue 1, Page 167-175, March 2025.
Abstract Canada implemented the legalization of nonmedical cannabis use and supply in 2018. Initial blueprints for the legalization policy framework emphasized public health protection as a priority principle and objective, including related policy design parameters and regulatory restrictions (e.g., strict access and distribution control ...
Benedikt Fischer   +3 more
wiley   +1 more source

Research on Modified Interpolation and Solving of Topology Optimization Based on Variable Density Method [PDF]

open access: yes, 2016
拓扑优化是在给定载荷、约束等条件下,寻找材料在设计域内最优布局的优化设计方法。在概念设计阶段具有重要意义,可以帮助设计者选择合适的初始拓扑结构。与传统设计方法相比,具有设计效率高,提高材料利用率等优点。从经济方面来看,拓扑优化可以减少设计成本、节约原材料,是结构设计中公认回馈最高的优化方式,已经成为结构设计中的研究热点,对其进行研究具有重要的理论意义及工程应用前景。 本文分析了国内外拓扑优化方法的研究现状,总结了拓扑优化有关理论、方法及应用方面的研究进展,在此基础上针对变密度法拓扑优化方法中SIMP ...
张昆鹏
core  

探讨装配式建筑结构设计构造节点的设计方法

open access: yes建筑结构, 2022
对构造节点来讲,其设计效果能够直接影响装配式建筑结构的稳定性以及抗震性,所以要对其加强重视程度。因此,要对构造节点的设计方法进行研究,为构造节点设计的合理性以及有效性得到确保。如何设计装配式建筑结构设计构造节点成为研究的重点内容之一。论文对此进行全面研讨。此次研究对构造节点的重要性有效明确,以此来使相关的设计方法得到实施,为装配式建筑结构的健康发展奠定基础保障。
朱 杰
semanticscholar   +1 more source

Implementation of clinical breast examination screening programme as part of primary care in Vietnam: An analysis of contextual factors

open access: yesWorld Medical &Health Policy, Volume 17, Issue 1, Page 90-107, March 2025.
Abstract Clinical breast examination (CBE) screening for breast cancer in Vietnam was proved to be cost‐effective and acceptable to women. However, the outcomes of the implementation of such proposed programme are unknown. To inform the design and implementation planning of the proposed screening programme, this study investigated and analysed the ...
Tran Thu Ngan   +3 more
wiley   +1 more source

Study on the Optimization of the Seawater Environmental Monitoring Network in the Bay Based on Kriging and GIS: A Case Study from Quanzhou Bay, Fujian Province [PDF]

open access: yes, 2015
海湾生态系统是一种重要海洋生态系统类型,通常具有独特的生态环境和高价值的各类资源。同时,其优越的自然条件、区位条件以及多样、丰富的资源,促使海湾周边城市社会经济发展快速,人口密度增大。但是,海湾作为半封闭海域,海水交换能力与自净能力有限,易受径流沉降与陆源污染物输入的影响,其生态环境较为脆弱。因此,亟需基于高效、准确的海洋环境监测评价以实施环境监督管理的措施。目前,我国海洋环境监测工作普遍存在监测目的不明确、环境信息不完整以及监测计划针对性弱等问题,导致现已开展的海洋环境监测与评价无法衔接 ...
倪敏捷
core  

Incorporating cyclone risk in the design of marine protected and conserved areas as an ecosystem‐based adaptation approach

open access: yesConservation Biology, EarlyView.
Abstract Marine protected and conserved areas (MPCAs) are promoted as an ecosystem‐based adaptation (EbA) approach to increase community and ecosystem resilience to climate change. However, traditional approaches to MPCA design typically do not consider climate risk or habitat condition under a climate threat.
Alyssa L. Giffin   +6 more
wiley   +1 more source

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