Results 1 to 10 of about 3,080 (110)
Policy &Internet, Volume 15, Issue 2, Page 162-177, June 2023., 2023 Abstract Policy debates about the digital divide often focus on the availability and quality of Internet access, despite the fact that device inequities are persistent and widespread. To address this important but often overlooked policy concern, we present findings from a systematic literature review of policy research that informs the supply of low ...
Amy L. Gonzales +2 more
wiley +1 more source
Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
wiley +1 more source
Gaoya dianqi, 2020 车载油浸式空心电抗器没有铁心,在进行特高压GIL交流耐压试验时工作电压高,工作电流大,可能在周围产生较强的磁场。为确保现场试验人员和电抗器周边设备的安全,研究电抗器周围工频磁场分布十分必要。文中对车载油浸式电抗器进行了电路建模,然后基于毕奥—萨伐尔定律计算了车载油浸式空心电抗器周围工频磁场分布。文中计算得到的结果与有限元法计算结果相符。相比有限元法,文中算法对计算机性能要求低,计算速度快,能提高电抗器工频磁场计算效率 ...
刘通 +5 more
doaj
Gaoya dianqi, 2023 高压交流输电线路附近的空间电场计算是其电磁环境评估的重要指标之一。为了正确模拟高压交流输电线路两端的端部效应，提出了一种应用周期边界条件计算其空间电场的计算方法。考虑输电线路各档构成周期结构，通过修改电位积分方程的格林函数，将输电线路周期结构的影响归并在一档线路之内，从而减少了待解未知数的个数，提高了计算效率。数值算例验证了文中方法的正确性。文中计算方法适用于超长高压输电线路电场的计算和分析。
郑中原 +6 more
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He +13 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The rapid expansion of data‐intensive applications has highlighted the fundamental limitations of traditional CMOS‐based von Neumann architectures, particularly in terms of power efficiency, latency, and flexibility. Spin logic devices utilizing spin–orbit torque (SOT) present a promising pathway for nonvolatile, low‐power, and in‐memory ...
Ke‐Yi Wu +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The Janus structure of ZnIn2S4 (ZIS) endows it with an intrinsic built‐in electric field that effectively drives photogenerated charge separation. However, this very structure also renders the predominant (001) facet (In–S termination) catalytically inert due to its low electron density and high energy barrier for the hydrogen evolution ...
Qingao Zhou +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Water electrolysis is a promising method for green hydrogen production, but slow hydrogen evolution reaction (HER) kinetics require efficient catalysts. In this study, we develop a Ni3S2/MoS2 heterostructure electrocatalyst using a work‐function‐driven electronic modulation strategy combined with a self‐sacrificial template approach.
Xinxin Zhao +11 more
wiley +1 more source
Fermi Surface Structure Revealed by Quantum Oscillations in Half‐Heusler Semimetal LuAuSn
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The Fermi surface structure in the half‐Heusler semimetallic compound LuAuSn was systematically investigated using quantum oscillation studies of high‐quality single crystals and first‐principles calculations. Clear bulk quantum oscillation signals were observed for multiple complementary physical properties, including magnetization, Hall ...
Yue Lu +12 more
wiley +1 more source
Gaoya dianqi, 2016 直流换流站高压设备金具表面电场的准确计算有助于电晕控制以及防电晕设计。针对换流站直流场设备复杂、计算区域大、对特殊金具局部表面电场计算精度要求高的特点,以某±500 kV换流站直流场为研究对象,基于电场数值计算方法,建立3D有限元仿真模型,对整个直流场设备进行电场计算,获得了各部位的电位和电场分布计算结果。通过对全模型计算结果进行分析,对其中需要重点关注的部位采用了子模型进行了更精确的求解,获得了更加准确的电场强度数值。最后基于Peek公式对直流场各金具进行了电晕控制安全裕度的评估 ...
周胜 +6 more
doaj