Results 21 to 30 of about 545 (83)
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The B2 phase is a critical strengthening constituent in AlxFeCoCrNi high‐entropy alloys (HEAs), and introducing such phases onto the nanoscale cellular substructures is an ideal pathway for strengthening alloys fabricated by laser powder bed fusion (L‐PBF).
Xiangjian Zhu +5 more
wiley +1 more source
Journal of Advanced Nursing, Volume 75, Issue 12, Page 3404-3423, December 2019., 2019 Abstract Aims To examine the association between nurse skill mix (the proportion of total hours provided by Registered Nurses) and patient outcomes in acute care hospitals. Design A quantitative systematic review included studies published in English between January 2000 – September 2018.
Diane E. Twigg +3 more
wiley +1 more source
International Journal of Urban and Regional Research, Volume 50, Issue 1, Page 191-220, January 2026.Abstract Henry George advocated for capturing land value increases for public ends. The active approach of public authorities organizing and financing land development can help capture higher land value increases, as Hartman and Spit indicate. However, this approach hardly happens in developing countries, where the coalition of private developers and ...
Nannan Xu
wiley +1 more source
Inside the ice shelf: using augmented reality to visualise 3D lidar and radar data of Antarctica
The Photogrammetric Record, Volume 34, Issue 168, Page 346-364, December 2019., 2019 From 2015 to 2017, the ROSETTA‐Ice project comprehensively mapped Antarctica's Ross Ice Shelf. The campaign imaged the ice‐shelf surface with lidar and its internal structure with ice‐penetrating radar. The first augmented reality (AR) visualisation of the Antarctic Ice Sheet, using the Microsoft HoloLens, is presented.
Alexandra L. Boghosian +8 more
wiley +1 more source
Gaoya dianqi, 2020 GIS设备为全封闭结构,传统的GIS设备故障诊断的方法有很多,但是对于故障的定位和处理较为困难。文中提出利用开关操作作为激励源,通过设备外壳表面的振动信号检测GIS设备故障的思路。根据110 kV GIS设备的结构,采用有限元分析软件,建立了设备的仿真模型,并考虑了螺栓连接方式、振动传递衰减等诸多因素,对GIS开关操作时设备外壳的振动特性进行研究。结果表明,壳体部位比临近实心结构处的振动加速度峰值更高,螺栓松动缺陷的存在会减弱连接部位振动加速度峰值的差距 ...
吴旭涛 +3 more
doaj
Gaoya dianqi, 2023 机械故障是GIS设备的主要故障类型之一，现有的接触式振动检测方法操作繁琐、检测范围受限、检测结果不直观，现场应用效果一般。文中分析了GIS设备异响振动缺陷类型与声信号衰减特性，提出了一种基于声学成像的GIS设备异响振动缺陷检测技术，设计了一种抗干扰能力强的螺旋形排布式麦克风阵列，用于测量异响声源强度，采用DAMAS算法对设备外壳的声场分布进行重构，并将声学成像图与可见光的视频图像透明叠加，能直观分析GIS设备的异响振动状态，对异响振动源进行定位，其对于提高GIS设备安全稳定运行具有十分重要的意义 ...
蒋西平 +4 more
doaj
Bring the Boys Back Home: The Impact of Foreign Divestments on Local Firms
The World Economy, Volume 48, Issue 11, Page 2386-2407, November 2025.ABSTRACT Divestments by foreign multinationals are an important phenomenon that is largely neglected in the literature. We use firm‐level panel data from China to estimate the impact of such divestments on the performance of domestic firms in the local economy.
Holger Görg, Haiou Mao, Nigel Driffield
wiley +1 more source
Gaoya dianqi, 2012 气体绝缘金属封闭开关设备（GIS）因其占地面积小、与环境的协调性好、配置灵活、受外部条件影响小等优点受到电力用户的青睐,成为了电网的关键设备。随着GIS设备在电网中的大量应用,GIS设备后期扩建对正在运行的前期设备的影响就很值得关注。笔者通过对GIS常见扩建方式以及扩建时开关操作的分析,阐述了GIS设备后期扩建的方法,得出了GIS设备后期扩建如何减少现场对接工作的时间和拆解GIS设备本体的范围、如何能尽量减小因扩建过程而造成的设备停运或尽可能地减少停电时间的途径。
薛红涛, 王伟伟, 康雪晶
doaj
Gaoya dianqi, 2020 针对气体绝缘金属全封闭开关设备（gas insulated switchgear,GIS）故障频发问题,提出一种基于振动特征估计的GIS设备故障检测与分析方法;首先,提取GIS设备金属外壳振动信号特征并基于通用自回归模型建立系统的状态空间模型;然后,采用粒子滤波算法对GIS设备振动特征进行估计。同时,将特征估计值与实际测量值之间残差的绝对值作为设备故障检测指标,结合自适应阈值方法来检测故障;最后,依据振动特征残差的变化趋势实现机械故障与放电故障的隔离。对多组变电站现场GIS设备不同故障前 ...
赵洪山, 高玉峰
doaj
Combating infections under siege: Healthcare challenges amidst the military assault in Gaza
World Medical &Health Policy, Volume 17, Issue 1, Page 188-213, March 2025.Abstract The ongoing Israeli military assault on Gaza has caused a devastating collapse of healthcare infrastructure, resulting in an unprecedented surge in infectious diseases. The destruction of sanitation systems, restrictions on medical supplies, and displacement of civilians have created an environment conducive to the rapid spread of waterborne ...
Bilal Irfan +24 more
wiley +1 more source