Zobrazeno 1 - 10
of 2 643
pro vyhledávání: '"P. Čapek"'
This paper introduces a framework for synthesizing reactively loaded antennas and antenna arrays. The framework comprises two main components: computing the fundamental bound using the semi-definite relaxation and finding a realizable solution via op
Externí odkaz:
http://arxiv.org/abs/2409.06291
This paper introduces a computational approach to identify performance constraints in the time-domain based on optimizing the excitation waveform. The method builds on an optimization algorithm that has been employed for decades to establish fundamen
Externí odkaz:
http://arxiv.org/abs/2409.16293
Autor:
Kadlec, Petr, Capek, Miloslav
This paper describes the modification of a single-objective algorithm into its multi-objective counterpart. The outcome is a considerable increase in speed in the order of tens to hundreds and the resulting Pareto front is of higher quality compared
Externí odkaz:
http://arxiv.org/abs/2409.14245
Autor:
Pinc, Jan, Vlcak, Petr, Lebeda, Miroslav, Bartunek, Vilem, Smola, Vojtech, Vronka, Marek, Drahokoupil, Jan, Weiss, Zdenek, Svora, Petr, Lesakova, Hana, Sindelarova, Katerina, Molnarova, Orsolya, Horazdovsky, Tomas, Studecky, Tomas, Salvetr, Pavel, Kubasek, Jiri, Capek, Jaroslav, Skolakova, Andrea
In this research, the influence of the N+ ion implantation process on the microstructure of a biodegradable Zn-0.8Mg-0.2Sr alloy was investigated using various experimental techniques. Microscopic analysis revealed that a fluence of 17x10^17 ions/cm^
Externí odkaz:
http://arxiv.org/abs/2407.06616
The reverse discharge (RD) phenomenon in bipolar HiPIMS has been observed when a sufficiently long positive pulse is applied to the magnetron. Due to the magnetic field, electrons accumulated behind the magnetic trap are prevented from reaching the p
Externí odkaz:
http://arxiv.org/abs/2405.14560
Time-resolved Langmuir probe diagnostics at the discharge centerline and at three distances from the target (35mm, 60mm, and 100mm) was carried out during long positive voltage pulses (a duration of 500$\mu$s and a preset positive voltage of 100V) in
Externí odkaz:
http://arxiv.org/abs/2403.18598
Autor:
S. Manzoni, P. Čapek, P. Porada, M. Thurner, M. Winterdahl, C. Beer, V. Brüchert, J. Frouz, A. M. Herrmann, B. D. Lindahl, S. W. Lyon, H. Šantrůčková, G. Vico, D. Way
Publikováno v:
Biogeosciences, Vol 15, Pp 5929-5949 (2018)
The cycling of carbon (C) between the Earth surface and the atmosphere is controlled by biological and abiotic processes that regulate C storage in biogeochemical compartments and release to the atmosphere. This partitioning is quantified using va
Externí odkaz:
https://doaj.org/article/dd7c0518307f40028973af8b14d8a227
The problem of substructure characteristic modes is reformulated using a scattering matrix-based formulation, generalizing subregion characteristic mode decomposition to arbitrary computational tools. It is shown that the scattering formulation is id
Externí odkaz:
http://arxiv.org/abs/2403.00792
We use the concept of active antenna available power to derive a generalization of the Friis transmission formula for multiport antenna systems. With beamformer weights chosen such that the array patterns are the same when transmitting and receiving,
Externí odkaz:
http://arxiv.org/abs/2401.13775
A meteor outburst consisting of at least 22 meteors above the Baltic sea and southern Scandinavia that occurred on 30 October 2022 was recorded using multiple cameras. A bright fireball was followed by fainter meteors over a 10 second period. All the
Externí odkaz:
http://arxiv.org/abs/2401.04419