Results 51 to 60 of about 15,655 (316)

Deformation-Electromagnetic Relations in Lithospheric Activity Manifestations

E3S Web of Conferences, 2018
It has been shown that dipole radiation of accelerated charges, described by Larmor relation, is the basis of the known mechanic-electromagnetic processes of rock deformation.
Larionov Igor, Malkin Evgeny, Uvarov Vladimir   +2 more
doaj   +1 more source

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

Advanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle, María Ángeles Navacerrada, Johan Christensen, Carlos González   +3 more
wiley   +1 more source

Analysis of the ionospheric parameter dynamics on the basis of a generalized multicomponent model

E3S Web of Conferences, 2018
In the present paper, we have carried out an analysis of the ionospheric critical frequency data of the F2 layer during strong magnetic storms in 2017-2018. The ionospheric data of Paratunka (IKIR FEB RAS, Kamchatka, 53.0 N, 158.7 E), Wakkanai (Japan, 45.
Mandrikova Oksana, Fetisova Nadezhda, Polozov Yuryi, Geppener Vladimir   +3 more
doaj   +1 more source

Dependence of the F2-layer critical frequency median at midlatitudes on geomagnetic activity

Solar-Terrestrial Physics, 2017
We put forward a method of separating the geomagnetic activity contribution to the F2-layer critical frequency median, foF2med, at middle latitudes. It is based on the analysis of foF2, which is the ratio foF2med/foF2q in percent, where foF2q is the F2 ...
Deminov M.G., Deminova G.F., Depuev V.Kh., Depueva A.Kh.   +3 more
doaj   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Radio Wave Propagation

IOSR Journal of Electronics and Communication Engineering, 2014
This thesis deals with Radio Wave Propagation in environments where the propagation is severely influenced by surrounding objects, mainly walls and other building structures. As an introduction, a brief description is given on propagation terms like loss, delay and dispersion along with system functions relevant for the topic.
openaire   +1 more source

Nonlinearity and Noise Effects in Multi-level Signal Millimeter-Wave over Fiber Transmission using Single- and Dual-Wavelength Modulation [PDF]

, 2010
We transmit multilevel quadrature amplitude modulation (QAM) data-IEEE 802.16 schemes-at 20 MSps and an orthogonal frequency-division multiplexing (OFDM) 802.11 g signal (54 Mbps) with a 25 GHz millimeter-wave over fiber system, which employs a dual ...
Jeanne James, James, Jeanne, Anthony Nkansah, Shen, Pengbo, Xing Liang, Pengbo Shen, Nkansah, Anthony, Gomes, Nathan J., Liang, Xing, Nathan J. Gomes   +9 more
core   +1 more source

Radio propagation modeling methods and tools [PDF]

, 2021
This chapter provides overview of fundamental definitions, tools and new methods towards improved channel modeling reported in the Cooperation in Science and Technology(COST)-Inclusive Radio Communications (IRACON) Action for future wireless ...
Joseph, Wout,, He, Danping,, Tanghe, Emmeric, Richard Rudd, Emmeric Tanghe, Tufvesson, Fredrik, Tufvesson, Fredrik,, Rudd, Richard, Sana Salous, Fredrik Tufvesson, Enrico Vitucci, He, Danping, Enrico M. Vitucci, Salous, Sana, Haneda, Katsuyuki, Tanghe, Emmeric,, Kyösti, Pekka, Kyösti, Pekka,, Wout Joseph, Katsuyuki Haneda, Haneda, Katsuyuki,, Danping He, Miao, Yang, Vitucci, Enrico,, Salous, Sana,, Joseph, Wout, Vitucci, Enrico, Miao, Yang,, Pekka Kyösti, Lund University., Yang Miao   +30 more
core   +1 more source

Magnetic Control of Chiral Hybridized Phonon Magnetic Moments in Ferrimagnets Fe2‐xZnxMo3O8

Advanced Functional Materials, EarlyView.
Helicity‐resolved magneto‐Raman spectroscopy reveals magnetic control of chiral phonon magnetic moments in polar ferrimagnet (ZnxFe2−xMo3O₈). Large spontaneous zero‐field phonon splittings, selective phonon–magnon coupling, and asymmetric Zeeman responses demonstrate that phonon chirality is governed by magnon‐phonon coupling and magnetization.
Youngsu Choi, Dirk Wulferding, Amit Pawbake, Clément Faugeras, Sivasakthi Kuppusamy, Raman Sankar, Gichan Son, Jeongwoo Kim, Kwang‐Yong Choi   +8 more
wiley   +1 more source

Is fiber the catalyst for growth of the mobile wireless network? [PDF]

, 2015
This paper will focus on how the growth of the mobile wireless technology can be supported by optical fiber, through wireless over fiber technologies. The paper will include recent advances in the field of fiber-wireless convergence such as cloud-based ...
Ng, Wai Pang, Kanesan, Thavamaran, T. Kanesan, W. P. Ng   +3 more
core   +1 more source