Results 31 to 40 of about 3,437 (157)
Jianzhu Gangjiegou Jinzhan, 2013 中广核大厦结构形式新颖,其北楼自10层到屋顶层为悬挑钢结构,采用大悬臂钢桁架结构体系。该超长悬挑钢结构重量大,卸载施工过程中,结构受力状态经历突变,转换节点应力状态复杂。为了保证结构安全,对该超长悬挑钢结构进行了施工阶段监测及施工模拟分析。分析及监测结果表明:中广核大厦超长悬挑钢结构转换节点受力状态合理;通过桁架受力机制很好地控制了悬挑结构的应力水平及变形幅值;结构受力状态与设计意图相符。验证了采用施工仿真模拟-现场监测-施工后补充分析的方法,可以合理地指导施工方案的确定、保证施工安全及质量 ...
辛业洪, 韩杰, 黄浩, 赵超
doaj
Integrating adult occurrence and reproduction data to identify conservation measures for amphibians
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Monitoring programs are pivotal to establishing sound management. Due to economic, logistic, and time limitations, monitoring programs often overlook differences among life‐history stages. However, species occurrence does not necessarily mean population viability, and it is unclear to what extent monitoring programs that do not consider ...
Elia Lo Parrino +4 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan由于复杂建筑结构的施工难度大且不确定性高，开展结构施工监测对整体的安全稳定至关重要。基于BIM和Web技术研发了对巨型钢桁架结构进行施工监测的结构安全监测平台，并对监测平台的总体设计思路及各项功能进行了详细的说明。根据监测数据的概率分布特征，利用高斯混合模型确定监测预警值以开展结构安全预警。该安全监测平台跟踪了钢桁架卸载施工全过程的形态和内力变化情况，建立了钢桁架的精细化模型以模拟卸载施工的全过程，并对比分析了实测结果和计算结果。研究结果表明：钢桁架z向位移均未超过跨度的1/400 ...
傅文炜 +5 more
doaj +2 more sources
Jianzhu Gangjiegou Jinzhan, 2019 南京牛首山树状结构的施工空间狭小、施工平台薄弱和大型设备不能进驻,根据其特殊施工环境提出了自平衡提升工法。对自平衡提升过程中可能产生的平面外位移问题,设计了双支撑胎架方案解决。利用3D3S空间结构设计软件对施工全过程进行了模拟,同时对树状结构提升全过程进行了施工监测,模拟结果和监测结果吻合较好。研究表明自平衡提升施工法能够满足特殊施工条件下大型钢结构安装的施工要求,为此类工程的合理施工提供了参考,采用3D3S设计软件对特殊环境下的空间钢结构进行施工预分析是可行的,能有效地提高工程的安全性。
余少乐 +6 more
doaj
Creating a more inclusive approach to wildlife trade management
Conservation Biology, Volume 38, Issue 5, October 2024.Abstract Global wildlife trade involves a diverse array of species. Although sustainable trade underpins livelihoods for communities worldwide, unsustainable trade, whether legal or illegal, threatens thousands of species and can lead to extinctions.
Amy Hinsley +2 more
wiley +1 more source
Gaoya dianqi, 2019 针对现有高压开关在线监测IED配置种类多、故障率高、有效报警率低、工程实施成本高的现状,研制一种高度集成化、低成本的新型综合在线监测IED（以下简称综合IED）。综合IED采用成熟的电力系统嵌入式软硬件平台,采用网络化、模块化设计,将原有高压开关机械特性、SF6气体、局放功能监测IED整合为一台IED,降低工程实施成本,减少监测IED设备故障率,将多类监测信息有效融合并进行综合分析,可有效提高故障报警正确率。通过在GIS样机上实测表明,综合IED功能及性能指标满足预期,具有很高的工程推广价值。
唐喜 +9 more
doaj
Influence of microclimate and forest management on bat species faced with global change
Conservation Biology, Volume 38, Issue 4, August 2024.Abstract Climate refugia, areas where climate is expected to remain relatively stable, can offer a near‐term safe haven for species sensitive to warming temperatures and drought. Understanding the influence of temperature, moisture, and disturbance on sensitive species is critical during this time of rapid climate change.
Chelsea L. Andreozzi +3 more
wiley +1 more source
Integrative Conservation, Volume 3, Issue 2, Page 112-126, June 2024.Integrating data collected by citizen scientists with data from traditional surveys improves our knowledge of reptile species distribution and richness. Data contributed by citizen scientist can inform reptile species abundance and rarity patterns in Brazil.
Lucas Rodriguez Forti +3 more
wiley +1 more source
Leakage of biodiversity risks under the European Union Biodiversity Strategy 2030
Conservation Biology, Volume 38, Issue 3, June 2024.Abstract The European Union Biodiversity Strategy 2030 (EUBDS) aims to regain biodiversity through enhanced forest conservation and protection, which may lead to increased timber harvest in non‐EU countries. We aimed to identify the potential leakage of biodiversity risks as induced by the EUBDS.
Richard Fischer +7 more
wiley +1 more source
Introducing Elinor for monitoring the governance and management of area‐based conservation
Conservation Biology, Volume 38, Issue 2, April 2024.Abstract Monitoring the governance and management effectiveness of area‐based conservation has long been recognized as an important foundation for achieving national and global biodiversity goals and enabling adaptive management. However, there are still many barriers that prevent conservation actors, including those affected by governance and ...
Shauna L. Mahajan +32 more
wiley +1 more source