ARTICLES

Filter  
Active filters 0
Remove
  

Refine your searches by:

Collections
Pure sciences
Technology
Research
Physical
Biology
Architecture and Urbanism
Public health
Environment
Agronomy and forestry
Chemistry
all records (73)

Languages
English
Spanish
German
Portuguese

Countries
Indonesia
USA
Switzerland
Ukraine
South Africa
Brazil
Italy
Canada
Romania
Russia
all records (76)

Years
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
all records (24)

Filter  
 
26.688  Articles
1 of 2.670 pages  |  10  records  |  more records»
When studying the temperature dependences of the acoustic absorption and the modulus of elasticity, absorption peaks are often observed, which correspond to the characteristic step on the temperature dependence of the modulus of elasticity. Such features ... see more

In this paper, we focus on cooperative spectrum sensing (CSS) for double threshold improved energy detector. In this method, the improved energy detector compares positive power operation p of the amplitude of received signals at each secondary user (SU) ... see more

The research about the characterization of neutron energy spectrum as the effect of thickness variation of beryllium (Be) target on HM-30 cyclotron using Monte Carlo N-Particle eXtended (MCNP-X) has been conducted. This research aims to know the character... see more

Modified Poschl Teller potential is a potential model used to describe behavior of inter moleculer forces. The spectrum energy and wave function of the particle affection in modified Poschl Teller potential are obtained by solving the Schrodinger equation... see more

Cognitive radio (CR) is a wireless technology developed to improve the usage in the spectrum frequency. Energy consumption is considered as a big problem in this technology, especially during a spectrum sensing. In this paper, we propose an algorithm to i... see more

In this paper, both the spectrum efficiency (SE) and the energy efficiency (EE) are investigated for an uplink massive multiple-input multiple-output (MIMO) system coexisting with an underlay device-to-device (D2D) system. The outage probability and the a... see more

In cognitive radio (CR), the spectrum sensing of the primary user (PU) may consume some electrical power from the battery capacity of the secondary user (SU), resulting in a decrease in the transmission power of the SU. In this paper, a multislot simultan... see more

The subject of research in the article is the energy spectrum of a multilayer quantum sized structure with an energy profile of a complex shape. The goal of this work is to study the interaction of quantum-confined and quasi- continuum energy states of pa... see more

The subject of research is the emission spectra of light sources based on LED structures. The purpose of the work is to formulate proposals to improve the photo biological safety of LED lighting systems. The article solves the following tasks: analyzing t... see more

1 of 2.670 pages  |  10  records  |  more records»