Results 11 to 20 of about 36,566 (236)

Least energy sign-changing solutions for a nonlocal anisotropic Kirchhoff type equation

open access: yesMoroccan Journal of Pure and Applied Analysis, 2022
In this paper, we investigate the existence of sign-changing solutions for the following class of fractional Kirchhoff type equations with potential (1+b[u]α2)((-Δx)αu-Δyu)+V(x,y)u=f(x,y,u),(x,y)∈ℝN=ℝn×ℝm,\left( {1 + b\left[ u \right]_\alpha ^2} \right ...
Rahmani Mohammed   +3 more
doaj   +1 more source

Flood Hazard Mapping in Rural Area: Case of Ephemeral Watercourses in SidiBoulenouar Zone [PDF]

open access: yesE3S Web of Conferences, 2021
The eastern region of Morocco is characterized by an arid to semi-arid climate. It is often confronted with heavy rainfall episodes that can generate floods that can cause adverse human and property damage.
Amar Imane   +3 more
doaj   +1 more source

Statistical Model of Digital Coherent Combining Efficiency in Multi-aperture Receivers

open access: yesGuangtongxin yanjiu, 2022
In order to mitigate the performance fading of Free-Space Optical (FSO) communication system caused by atmospheric turbulence, a multi-aperture receiving scheme based on digital coherent beam combining is used.
Jing-song XIANG, Xin-hao Lü
doaj   +1 more source

Wireless Energy and Information Transmission in FSO and RF-FSO Links [PDF]

open access: yesIEEE Wireless Communications Letters, 2018
We propose and analyze a wireless energy and information transmission scheme in free-space optical (FSO) links. The results are presented for both quasi-static and fast-fading conditions. We derive closed-form expressions for throughput, outage probability, and optimal power allocation optimizing the system throughput/outage probability.
Behrooz Makki   +4 more
openaire   +3 more sources

Impact of Channel Correlation on Different Performance Metrics of OSSK-Based FSO System [PDF]

open access: yes, 2020
In this paper, we study the impact of correlation on the bit error rate (BER) and the channel capacity of a free-space optical (FSO) multiple-input-multiple-output (MIMO) system employing optical space shift keying (OSSK) over a fading channel.
Bhatnagar, Manav R.   +5 more
core   +2 more sources

Availability of free-space optics (FSO) and hybrid FSO/RF systems [PDF]

open access: yesSPIE Proceedings, 2001
Free Space Optics (FSO) has become a viable, high-bandwidth wireless alternative to fiber optic cabling. The primary advantages of FSO over fiber are its rapid deployment time and significant cost savings. The disadvantage of FSO over fiber is that laser power attenuation through the atmosphere is variable and difficult to predict, since it is weather ...
Isaac I. Kim, Eric J. Korevaar
openaire   +1 more source

Possibility to Obtain Anti-Athrax Human Immunoglobulin for Intravenous Injection

open access: yesПроблемы особо опасных инфекций, 2008
For the first time specific Ig was obtained from blood plasma of donors immunized by combined anthrax vaccine. This Ig conforms to quality standards for intravenous immunoglobulins and includes antibodies to Bacillus anthracis protective antigen in titer
V. Yu. Dolmatov   +10 more
doaj   +1 more source

Hybrid Radio/Free-Space Optical Design for Next Generation Backhaul Systems [PDF]

open access: yes, 2015
The deluge of date rate in today's networks imposes a cost burden on the backhaul network design. Developing cost efficient backhaul solutions becomes an exciting, yet challenging, problem.
Al-Naffouri, Tareq Y.   +3 more
core   +2 more sources

On the ASER performance of amplify-and-forward relaying MIMO/FSO systems using SC-QAM signals over log-normal and gamma-gamma atmospheric turbulence channels and pointing error impairments

open access: yesJournal of Information and Telecommunication, 2020
In this work, we analyse pointing error effects on the performance of amplify-and-forward (AF) relaying multiple-input multiple-output (MIMO) free-space optical (FSO) communication system employing sub-carrier quadrature amplitude modulation (SC-QAM ...
Duong Huu Ai   +2 more
doaj   +1 more source

Introduction of the Pelleted Smallpox Vaccine TEOVak into Serial Production to Provide Biosafety of the Population of the Russian Federation

open access: yesПроблемы особо опасных инфекций, 2010
The industrial basis was developed and licensed to produce effective pelleted oral smallpox vaccine TEOVak in the Virologic Centre. Several series of TEOVak preparation were produced in accordance with the industrial technology on a built-in processing ...
V. P. Bondarev   +3 more
doaj   +1 more source

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