J. Chęciński

ORCID: 0000-0001-6352-730X
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About
Contact & Profiles
Research Areas
  • Engine and Fuel Emissions
  • Impact of Light on Environment and Health
  • Advanced DC-DC Converters
  • Stellar, planetary, and galactic studies
  • GaN-based semiconductor devices and materials
  • Wireless Sensor Networks for Data Analysis
  • Optical Wireless Communication Technologies
  • Bluetooth and Wireless Communication Technologies
  • Induction Heating and Inverter Technology
  • Astronomy and Astrophysical Research
  • Sensor Technology and Measurement Systems
  • Astrophysics and Star Formation Studies
  • IoT and Edge/Fog Computing
  • Color Science and Applications
  • Advancements in Materials Engineering
  • Advanced Measurement and Detection Methods
  • Software-Defined Networks and 5G
  • Power Quality and Harmonics
  • Mechanical and Thermal Properties Analysis
  • Transportation Systems and Safety
  • Advanced Optical Network Technologies
  • Cloud Computing and Resource Management
  • Refrigeration and Air Conditioning Technologies
  • Planetary Science and Exploration
  • Caching and Content Delivery

Silesian University of Technology
2013-2025

This article introduces an innovative meteor detection system that integrates high-speed photodiode detectors with traditional camera-based systems. The employs four photodiodes to record changes in sky brightness at 100 Hz, enabling and the observation of their dynamics. technology serves as a valuable complement existing imaging techniques, offering cost-effective solution for measuring ablation frequencies beyond capabilities We showcase findings from Perseid shower, demonstrating...

10.3390/app15052828 article EN cc-by Applied Sciences 2025-03-05

The short latency required by IoT devices that need to access specific services have led the development of Fog architectures can serve as a useful intermediary between systems and Cloud. However, massive numbers are being deployed raise concerns about power consumption such number servers increase. Thus, in this paper, we describe software-defined network (SDN)-based control scheme for client–server interaction constantly measures ongoing response times estimates consumption, order select...

10.3390/s21093105 article EN cc-by Sensors 2021-04-29

Abstract New results on the behavior of double-mode RR Lyrae V338 Boo are presented. The Transiting Exoplanet Survey Satellite (TESS) observed this star again in 2022, and an observing campaign American Association Variable Star Observers (AAVSO) was completed after TESS observations as a follow-up. We find that first overtone pulsation mode completely disappears during window. This reappears at end observations, AAVSO shows months followed, not only present but dominant pulsation. star,...

10.3847/1538-4357/ad7094 article EN cc-by The Astrophysical Journal 2024-09-30

We report the confirmation and characterization of four hot Jupiter-type exoplanets initially detected by TESS: TOI-1295 b, TOI-2580 TOI-6016 TOI-6130 b. Using observations with high-resolution echelle spectrograph MaHPS on 2.1 m telescope at Wendelstein Observatory, together NEID Kitt Peak National Observatory TRES Fred Lawrence Whipple we confirmed planetary nature these planet candidates. also performed precise mass measurements. All planets are found to be Jupiters orbital periods...

10.1051/0004-6361/202451404 article EN cc-by Astronomy and Astrophysics 2024-12-01

10.15199/48.2016.09.13 article PL PRZEGLĄD ELEKTROTECHNICZNY 2016-09-01

Thanks to a very high luminous efficacy of LED lamps (over 160 lm/W) they are the most preferred light sources in lighting applications today.The useful lifetime modules exceeds 50,000 hours.Chromatic parameters making use SSL (Solid State Lighting) have already equalled classic solutions, although were noticeably worse not so long ago.High values Colour Rendering Index (CRI) and ease control over flux cause that with LEDs become attractive solutions.Today, important problem concerns drivers...

10.24425/bpasts.2020.134188 article EN cc-by-nc-nd Bulletin of the Polish Academy of Sciences Technical Sciences 2020-07-15

10.15199/48.2018.08.02 article PL PRZEGLĄD ELEKTROTECHNICZNY 2018-08-02

Many examples of capacitorless and inductorless drivers used to power LED lamps directly from the AC mains use complicated circuitry in form a dedicated integrated circuit which is designed for particular multistring lamp order obtain value factor very close 1 high efficiency whole unit. However, authors such descriptions do not provide any details concerning optimum choice number strings LEDs each string. The aim this work show that acceptable values both electrical parameters mentioned...

10.5755/j01.eie.25.3.23674 article EN cc-by Elektronika ir Elektrotechnika 2019-06-25

Wydawnictwo SIGMA-NOT wydaje czasopisma fachowe informujące swoich czytelników o najnowszych osiągnięciach naukowych i nowoczesnych rozwiązaniach technicznych w Polsce na świecie, popularyzuje problemy techniczne oraz poszerza wiedzę kulturę techniczną.

10.15199/48.2022.09.43 article PL PRZEGLĄD ELEKTROTECHNICZNY 2022-09-05

Wydawnictwo SIGMA-NOT wydaje czasopisma fachowe informujące swoich czytelników o najnowszych osiągnięciach naukowych i nowoczesnych rozwiązaniach technicznych w Polsce na świecie, popularyzuje problemy techniczne oraz poszerza wiedzę kulturę techniczną.

10.15199/48.2021.02.08 article PL PRZEGLĄD ELEKTROTECHNICZNY 2021-02-01
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