Zobrazeno 1 - 10
of 640
pro vyhledávání: '"Pechac, P."'
Reinforcement learning can solve decision-making problems and train an agent to behave in an environment according to a predesigned reward function. However, such an approach becomes very problematic if the reward is too sparse and so the agent does
Externí odkaz:
http://arxiv.org/abs/2302.11563
Akademický článek
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Publikováno v:
Radioengineering, Vol 27, Iss 1, Pp 29-33 (2018)
Attenuation of electromagnetic waves in millimeter wave bands is analyzed by means of experimental measurement of received signal fluctuations on terrestrial radio links operating in frequency bands 58, 94 and 122 GHz. Long-term time series of the re
Externí odkaz:
https://doaj.org/article/1509c9c7fce248bea661927b3c20cb34
Publikováno v:
Communications, Vol 19, Iss 2A, Pp 106-111 (2017)
The goal of this paper is to present new innovative algorithms for discrete structural optimization of problems involving multi-criteria objective function, which contains stress, displacement and frequency constraints. The algorithm is tested on a s
Externí odkaz:
https://doaj.org/article/cfffc66177d54f2ebe683538da7ec7f4
Akademický článek
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Publikováno v:
Radioengineering, Vol 25, Iss 4, Pp 637-643 (2016)
Detailed analysis of tree canopy interaction with incident radiowaves has mainly been limited to remote sensing for the purpose of forest classification among many other applications. This represents a monostatic configuration, unlike the case of com
Externí odkaz:
https://doaj.org/article/284d747cc70249d0bde8ebdb2851fa5b
Non-Reciprocal Supratransmission in Mechanical Lattices with Non-Local Feedback Control Interactions
Autor:
Jack E. Pechac, Michael J. Frazier
Publikováno v:
Crystals, Vol 11, Iss 2, p 94 (2021)
We numerically investigate the supratransmission phenomenon in an active nonlinear system modeled by the 1D/2D discrete sine-Gordon equation with non-local feedback. While, at a given frequency, the typical passive system exhibits a single amplitude
Externí odkaz:
https://doaj.org/article/ad82ed9262064be8933adb9262c956ad
Publikováno v:
Communications, Vol 18, Iss 1A, Pp 64-69 (2016)
The paper presents an implementation of the memetic algorithm for discrete structural optimization. This algorithm is a combination of genetic algorithm and five local search methods. The proposed memetic algorithm is able to choose the right local s
Externí odkaz:
https://doaj.org/article/076515e0bf724fe9b370074ea31f1446
Publikováno v:
Radioengineering, Vol 24, Iss 4, Pp 1044-1049 (2015)
Unmanned Aerial Vehicles (UAV) will increasingly be used for responding to emergencies or for law enforcement in civil surveillance applications. Transferring the enormous amounts of information from UAV-mounted cameras or sensors will require large
Externí odkaz:
https://doaj.org/article/b82999bb71624bed918ae86676d0041a
Publikováno v:
Communications, Vol 17, Iss 3, Pp 12-17 (2015)
The article deals with numerical simulation of induction heating process as a coupling of electromagnetism and heat transfer. The article presents how the surrounding materials used in the induction heating process influence the resulting temperature
Externí odkaz:
https://doaj.org/article/e7fdba09fefb4d80b0d524322a18d441