العنوان البديل: Research on Radio Wave Propagation Prediction Model of Vehicle-Mounted Ultrashort Wave Radio.

المؤلفون: 李敏¹, 张光硕¹, 徐至江¹, 谢红星¹, 路宏敏¹

المصدر: Electronic Science & Technology. 2023, Vol. 36 Issue 7, p64-69. 6p.

مصطلحات موضوعية: *RADIO wave propagation, *ANTENNA radiation patterns, *MACHINE learning, *STANDARD deviations, *RANDOM forest algorithms, *INTELLIGENT transportation systems, *TELECOMMUNICATION satellites

المؤلفون: LI Tianjie¹, WU Gensheng¹, YUAN Zhishan², YIN Fuqiang¹, GU Yunfeng¹ gu_yunfeng@sina.com

المصدر: Journal of Synthetic Crystals. Dec2022, Vol. 51 Issue 12, p2022-2030. 9p.

مصطلحات موضوعية: *PHONONIC crystals, *ELASTIC wave propagation, *SILICONE rubber, *FINITE element method, *CRYSTAL models, *PHONONS

المؤلفون: Xudong Gu, Binbin Ni, Wei Xu, Shiwei Wang, Bin Li, Ze-Jun Hu, Fang He, Xiangcai Chen, Hong-Qiao Hu

المصدر: 地球与行星物理论评, Vol 55, Iss 1, Pp 15-23 (2024)

مصطلحات موضوعية: whistler wave monitoring equipment, antarctic great wall station, space weather, vlf wave propagation, chinese meridian project, Geophysics. Cosmic physics, QC801-809, Astrophysics, QB460-466

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2097-1893Test

الوصول الحر: https://doaj.org/article/55839fb7c4b842e4a364873657e0e488Test

المؤلفون: YU Aiping, CHEN Zhehan, WU Xiaoman, MAO Feiteng, CHEN Xuandong

المصدر: Journal of Henan University of Science & Technology, Natural Science; 12/25/2023, Vol. 44 Issue 6, p70-76, 7p

مصطلحات موضوعية: ACOUSTIC emission, ACOUSTIC wave propagation, HIGH strength concrete, FAST Fourier transforms, CONCRETE, ATTENUATION coefficients

العنوان البديل: A Through-the-Wall Radar Imaging Composite Delay Time Algorithm for Wall with Unknown Parameters Based on Refraction Static Correction.

المؤلفون: 李家强^1,2 ljq@nuist.edu.cn, 刘　然², 徐才秀³, 陈金立^1,2, 陈焱博², 朱艳萍²

المصدر: Telecommunication Engineering. 5/28/2021, Vol. 61 Issue 5, p582-588. 7p.

مصطلحات موضوعية: *PROBLEM solving, ELECTROMAGNETIC wave propagation, RECEIVING antennas, TRANSMITTING antennas, ELECTROMAGNETIC waves, CLUTTER (Radar)

المؤلفون: Junjun LI, Mengfei YU, Guofu LI, Zheng WANG, Jian GONG, Junke GAO

المصدر: Meitan kexue jishu, Vol 51, Iss 9, Pp 121-128 (2023)

مصطلحات موضوعية: low permeability coal seam, aerospace solid propellant, high-energy gas fracturing, stress wave propagation, attenuation law, pressure in the borehole wall, permeability enhancement, Mining engineering. Metallurgy, TN1-997

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/0253-2336Test

الوصول الحر: https://doaj.org/article/0506482e34824614a615bdf0de3620c7Test

العنوان البديل: A Random Forest-based LOS / NLOS Base Station Identification Method. (English)

المؤلفون: 戢静红, 张振宇, 邓平

المصدر: Telecommunication Engineering; 10/28/2023, Vol. 63 Issue 10, p1596-1602, 7p

مصطلحات موضوعية: MEASUREMENT errors, RANDOM forest algorithms, MACHINE learning, RADIO waves, RADIO wave propagation

العنوان البديل: Forward simulation of electromagnetic waves in coal gangue model based on improved bidirectional peak-valley search algorithm. (English)

المؤلفون: 史翔予, 司垒, 王忠宾, 魏东, 顾进恒

المصدر: Journal of Mine Automation; Oct2023, Vol. 49 Issue 10, p87-95, 9p

مصطلحات موضوعية: FINITE difference time domain method, ELECTROMAGNETIC wave propagation, MAXWELL equations, ELECTROMAGNETIC waves, SEARCH algorithms

المؤلفون: YANG Zhiyong, HOU Peng, JIANG Wenge, YANG Lei, ZUO Xiaobiao, GENG Dongbing, ZHU Zhongzheng, LI Hua

المصدر: Journal of Aeronautical Materials; Oct2023, Vol. 43 Issue 5, p84-96, 13p

مصطلحات موضوعية: ACOUSTIC models, ABSORPTION of sound, ACOUSTIC field, ACOUSTIC wave propagation, DEGREES of freedom, SIMULATION methods & models

العنوان البديل: Design and Verification of C Band Broadband Thin-Film Bulk Acoustic Wave Filter. (English)

المؤلفون: 蒋世义, 蒋平英, 马晋毅, 陈彦光, 徐 阳, 刘 娅, 徐 溢

المصدر: Piezoelectrics & Acoustooptics; Aug2023, Vol. 45 Issue 4, p535-539, 5p

مصطلحات موضوعية: WAFER level packaging, ACOUSTIC filters, SOUND waves, MICROELECTROMECHANICAL systems, INSERTION loss (Telecommunication), ACOUSTIC wave propagation, STRUCTURAL optimization