Zobrazeno 1 - 10
of 727
pro vyhledávání: '"utd"'
Autor:
José Lorente-López, José-Víctor Rodríguez, María-Teresa Martínez-Inglés, Jose-Maria Molina Garcia-Pardo, Ignacio Rodríguez-Rodríguez, Leandro Juan-Llácer
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2024, Iss 1, Pp 1-11 (2024)
Abstract This article introduces a uniform theory of diffraction–physical optics (UTD–PO) formulation for analyzing radiowave multiple diffraction emanating from trees and buildings in green urban areas, considering illumination from a low transm
Externí odkaz:
https://doaj.org/article/cc7ceb9166c44314a5998c1f6e5d0f34
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 4, Pp 1013-1025 (2024)
As one of the channels used by the wireless gigabit (WiGig) protocol, a 58 GHz band has been deployed to realize a data rate of up to 100 gigabits per second (Gbps). Systems at the 58 GHz band point the main beam of the base station toward the mobile
Externí odkaz:
https://doaj.org/article/58447ba7626d44c5aa0aaa612ea4f793
Publikováno v:
JISA (Jurnal Informatika dan Sains), Vol 6, Iss 2, Pp 147-152 (2023)
Blood is an important component produced by the human body. Blood is also a very vital part of human survival. When blood levels in the human body are less than they should be, the way to overcome this is by donating blood or blood transfusion. The h
Externí odkaz:
https://doaj.org/article/c86693fed5854bb48d9dc1824d0c5d10
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 22, Iss 2, Pp 298-312 (2023)
Abstract This paper presents a radiopropagation algorithm based on a Ray Tracing (RT) technique that combines a modified multipath model for constant refractivity gradient profiles and the Uniform Theory of Diffraction (UTD). A novel formulation is p
Externí odkaz:
https://doaj.org/article/c90351c7108e44d48dcbf18dc38896da
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Swagato Mukherjee, Gregory Skidmore, Tarun Chawla, Anmol Bhardwaj, Camillo Gentile, Jelena Senic
Publikováno v:
IEEE Access, Vol 10, Pp 133643-133654 (2022)
Human blockage at millimeter-wave frequencies is most commonly modeled through Knife-Edge Diffraction (KED) from the edges of the body shaped as a vertical strip. Although extensively validated in controlled laboratory experiments, the model does not
Externí odkaz:
https://doaj.org/article/44c850c1c3844de09b54f594986da1d6
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 3, Pp 848-859 (2022)
In this paper we provide a modified 3D Uniform Theory of Diffraction (UTD) model for afinite-length cylinder, and validate the model by comparing to the simulation and the measured data. The presented finite-cylinder UTD model is adapted from the con
Externí odkaz:
https://doaj.org/article/b56c3eb0df364e68b0039552ca91fce8
Autor:
Yuling Liu, Hua Shi, Xiaojing Yu, Tianchao Xiang, Ye Fang, Xian Xie, Xiaofen Pan, Xiaolin Li, Zhicai Sun, Bihong Zhang, Simao Fu, Jia Rao
Publikováno v:
Frontiers in Pediatrics, Vol 9 (2022)
ObjectiveTo evaluate the value of ultrasound screening for congenital anomalies of the kidney and urinary tract (CAKUT) during the early postnatal period.MethodsThis is a prospective study that enrolled all neonates born from August 2019 to July 2020
Externí odkaz:
https://doaj.org/article/8ad544658e1745299f845048c74a034d