Results 31 to 40 of about 1,293,379 (340)

THE SYRIAN QUESTION IN THE CONTEXT OF GEOPOLITICAL CONTRADICTIONS OF RUSSIA AND USA

open access: yesСовременная наука и инновации, 2022
The Syrian crisis is most difficult today an interlacing of geopolitical contradictions where the multi-vector interests of global players - the USA and Russia and regional find the collision: Saudi Arabia, Turkey, Iran.
Arushan Arushanovich Vartumyan   +1 more
doaj  

Two-stage Channel Frequency Response Estimation in OFDM Systems [PDF]

open access: yes, 2020
This paper proposes two-stage channel frequency response estimation algorithm in communication systems with OFDM technology. Algorithm is based on Kalman filter. Pilots from current and previous OFDM symbols are used for channel estimation.
Myronchuk, Oleksandr   +2 more
core   +2 more sources

Impact assessment of rural PPP MaaS pilots

open access: yes, 2020
The purpose of this paper is to present the impact assessment results of Mobility as a Service pilots based on public-private collaboration. In the pilots, companies and local and regional stakeholders joined their expertise to experiment with different ...
Jenni Eckhardt   +2 more
semanticscholar   +1 more source

Morphological Characteristics and Lung Function of the Pilots of Montenegro Army

open access: yesJournal of Anthropology of Sport and Physical Education, 2022
The results of numerous medical studies and kinesiology research show the existence of differences in the lung function with reference to age, body height and the ratio of certain parameters of body composition.
Boris Banjevic, Boris Zarkovic
doaj   +1 more source

Tracing Pilots’ Situation Assessment by Neuroadaptive Cognitive Modeling

open access: yesFrontiers in Neuroscience, 2020
This study presents the integration of a passive brain-computer interface (pBCI) and cognitive modeling as a method to trace pilots’ perception and processing of auditory alerts and messages during operations. Missing alerts on the flight deck can result
Oliver W. Klaproth   +5 more
semanticscholar   +1 more source

COVID-19 Pandemic and Pilot Mental Health Care

open access: yesHanggong uju uihakoeji, 2021
When the COVID-19 crisis hit air transport, the whole aviation industry was affected. The change in the behavior of passengers following the COVID-19 crisis, travel restrictions and the ensuing economic crisis have resulted in a dramatic drop in ...
Young Hwan Kwon
doaj   +1 more source

Spectral and Energy Efficiency of Superimposed Pilots in Uplink Massive MIMO [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2017
Next-generation wireless networks aim at providing substantial improvements in spectral efficiency (SE) and energy efficiency (EE). Massive MIMO has been proved to be a viable technology to achieve these goals by spatially multiplexing several users ...
Daniel Verenzuela   +2 more
semanticscholar   +1 more source

Theory of aces: high score by skill or luck? [PDF]

open access: yes, 2008
We studied the distribution of World War I fighter pilots by the number of victories they were credited with, along with casualty reports. Using the maximum entropy method we obtained the underlying distribution of pilots by their skill. We find that the
Roychowdhury, V. P., Simkin, M. V.
core   +1 more source

Superimposed Pilots Are Superior for Mitigating Pilot Contamination in Massive MIMO [PDF]

open access: yesIEEE Transactions on Signal Processing, 2016
In this paper, superimposed pilots are introduced as an alternative to time-multiplexed pilot and data symbols for mitigating pilot contamination in massive multiple-input multiple-output (MIMO) systems.
Karthik Upadhya   +2 more
semanticscholar   +1 more source

THE PRICE OF LIBERATION. DEATH TOLL OF SOVIET TROOPS DURING THE OFFENSIVE IN THE NORTH CAUCASUS IN 1943

open access: yesГуманитарные и юридические исследования, 2021
Red Army offensive in the North Caucasus in January -October 1943 was a milestone of the turning point in the course of the Great Patriotic War. It resulted in the defeat of the German army and its allies, the liberation of a large territory with a ...
I. Kiselev
doaj  

Home - About - Disclaimer - Privacy