Results 21 to 30 of about 13,001 (183)
World Affairs, Volume 189, Issue 2, Summer 2026.ABSTRACT In the post‐pandemic period, intensified energy price fluctuations, supply disruptions, and geopolitical tensions have tested national institutional capacities. This study examines the dynamic interaction between energy risks and government effectiveness using annual data from 25 European Union member states over 2008–2023, employing a Panel ...
Tufan Sarıtaş +3 more
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Gaoya dianqi, 2018 为提高输电线路的故障测距性能,笔者综合分析了工频法和行波法二者之间的测距特点,并提出了一种综合应用工频量法和单端行波法的组合故障测距法。首先,基于输电线路的沿线电压幅值分布规律,利用切线交叉的工频测距原理,初步确定故障区域,接着,在此基础上用A型行波法精确地测出故障位置。通过引入行波测距避免工频测距后续的迭代计算,克服迭代不收敛或收敛至伪根的问题,提高测距精度;用工频初步测距,缩小行波波头辨识范围,提高行波测距可靠性。经仿真验证:所提组合法比工频法测距精度更高,比行波法的波头识别更加准确可靠。
李振兴 +4 more
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT This study developed a FeSiAl@LMPGP composite material to address the demand for low‐frequency electromagnetic absorption. Through controllable heat treatment, FeSiAl particles and PbO nanoparticles self‐assembled into a high‐density Mott–Schottky heterointerface structure, which exhibited a significant built‐in electric field (BIEF) effect ...
Yuqi Wang +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The high accuracy in surface‐enhanced Raman scattering‐lateral flow immunoassays (SERS–LFIAs) is critical for reliable point‐of‐care testing (POCT) in clinical diagnostics. Conventional approaches are often affected by sampling variability and uneven distribution of immunoprobes, leading to unreliable signal fluctuations.
Shuai Zhao +9 more
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Guangtongxin yanjiu, 2008 文章提出一种将光相移键控（PSK）调制用于基于谐波生成原理的毫米波光纤无线电（ROF）下行链路系统,在生成毫米波的同时,实现了二进制相移键控（BPSK）调制,并且通过加入并行光载波抑制双边带调制（DSB-SC）支路实现了导频的产生,供毫米波下变频之用。仿真结果验证了毫米波的产生和信号的调制解调过程,证明了该下行链路系统的可行性。
朱美伟 +3 more
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Regulating negative parameters of metacomposites is mainly limited by their unclear mechanisms, which affects their practical applications in new sensing, communication, electromagnetic (EM) protection and other fields. This work proposes a dual‐functional competitive design strategy based on the waste corncob‐derived carbon/polyaniline ...
Qiuyun Yang +4 more
wiley +1 more source
Gaoya dianqi, 2012 母线采用第二类接线方式,考虑母线分布电容,建立输电线路模型。对行波线模分量进行小波变换以及模极大值处理,利用模式识别,建立隶属度函数,对故障初始行波、故障点反射波、对端母线反射波进行标定,得到1组时刻组合（t1m,t2m,t3m）。经过单端行波测距计算,获得2个测距结果x和（L-x）,其中1个测距结果为伪根,给出去除该伪根的方法。理论分析和EMTP仿真验证,该文测距方法不受波速影响,并且具有很高的测距精度,较好的抗干扰性和抗过渡电阻能力。
胥杰 +5 more
doaj
Dizhen xuebao面波频散成像在研究地下介质波速结构方面起着重要作用，然而目前公开的面波频散成像工具大多在命令行环境下运行，使用不同种编程语言对数据进行前后处理，对于普通用户而言：① 运行环境的配置难度系数高；② 需要较强的编程能力进行数据加工以及结果展示。为解决上述问题，本文基于PyQt5开发了一款易于部署在Windows 11操作系统上的面波频散曲线成像平台（SWDIT）。SWDIT已集成多种模块，包括半波长法模块、三维面波走时反演模块、三维数据可视化模块，可对用户输入的频散曲线信息进行灵活成像 ...
Jing Hu +4 more
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The Hour that Never Comes and the Time that Remains
Journal of Analytical Psychology, Volume 71, Issue 1, Page 123-143, February 2026.Abstract This essay proposes a symbolic and clinical investigation of psychic temporality through two archetypal experiences of time: the hour that never comes and the time that remains. Drawing on analytical psychology, trauma theory and aesthetic philosophy, text explores how certain forms of suffering resist chronological resolution and persist as ...
Daniel Françoli Yago
wiley +1 more source