Wyniki wyszukiwania dla: GPU ENERGY OPTIMIZATION

• A novel dual-band rectifier circuit with enhanced bandwidth for RF energy harvesting applications

  Publikacja

  • T. Karataev
  • A. Bekasiewicz
  • S. Kozieł

  - Rok 2018

  In recent years, a rapid development of low-power sensor networks, enabling machine-to-machine communication in applications such as environmental monitoring, has been observed. Contemporary sensors are normally supplied by an external power source, typically in a form of a battery, which limits their lifespan and increases the maintenance costs. This problem can be addressed by harvesting and converting ambient RF energy into...

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• Prediction of energy consumption and evaluation of affecting factors in a full-scale WWTP using a machine learning approach

  Publikacja

  • F. Bagherzadeh
  • A. Shojaei Nouri
  • M. J. Mehrani
  • S. Thennadil

  - PROCESS SAFETY AND ENVIRONMENTAL PROTECTION - Rok 2021

  Treatment of municipal wastewater to meet the stringent effluent quality standards is an energy-intensive process and the main contributor to the costs of wastewater treatment plants (WWTPs). Analysis and prediction of energy consumption (EC) are essential in designing and operating sustainable energy-saving WWTPs. In this study, the effect of wastewater, hydraulic, and climate-based parameters on the daily consumption of EC by...

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• Analysis of electricity generation variability in 2019 with special consideration of electrical energy generation from wind sources.

  Publikacja

  • S. Kruk-Gotzman
  • P. Ziółkowski
  • J. Badur

  - Rok 2020

  This article presents issues related to the broadly understood development of wind energy. The state of the art of wind energy in the world has been discussed. This paper also shows issues related to factors affecting the development of renewable energy sources and their impact on the natural environment on the basis of available research. The focus is, however, on the critical analysis of phenomena in the data of the Transmission...

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• Integrated algorithm for selecting the location and control of energy storage units to improve the voltage level in distribution grids

  Publikacja

  • A. Szultka
  • S. Szultka
  • S. Czapp
  • Z. Lubośny
  • R. Małkowski

  - ENERGIES - Rok 2020

  This paper refers to the issue that mainly appears in distribution grids, where renewable energy sources (RES) are widely installed. In such grids, one of the main problems is the coordination of energy production time with demand time, especially if photovoltaic energy sources are present. To face this problem, battery energy storage units (ESU) can be installed. In recent years, more and more attention has been paid to optimizing...

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• Fast multi-objective design optimization of microwave and antenna structures using data-driven surrogates and domain segmentation

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - ENGINEERING COMPUTATIONS - Rok 2020

  Purpose Strategies and algorithms for expedited design optimization of microwave and antenna structures in multi-objective setup are investigated. Design/methodology/approach Formulation of the multi-objective design problem oriented towards execution of the population-based metaheuristic algorithm within the segmented search space is investigated. Described algorithmic framework exploit variable fidelity modeling, physics- and...

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• Maximizing SDN resilience to node‐targeted attacks through joint optimization of the primary and backup controllers placements

  Publikacja

  • M. Pióro
  • M. Mycek
  • A. Tomaszewski
  • A. de Sousa

  - NETWORKS - Rok 2024

  In Software Defined Networks (SDN) packet data switches are configured by a limited number of SDN controllers, which respond to queries for packet forwarding decisions from the switches. To enable optimal control of switches in real time the placement of controllers at network nodes must guarantee that the controller-to-controller and switch-to-controller communications delays are bounded. Apart from the primary controllers that...

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• Crystal structure and low-energy Einstein mode in ErV2Al20 intermetallic cage compound

  Publikacja

  • M. J. Winiarski
  • T. Klimczuk

  - JOURNAL OF SOLID STATE CHEMISTRY - Rok 2017

  Single crystals of a new ternary aluminide ErV2Al20 were grown using a self-flux method. The crystal structure was determined by powder X-ray diffraction measurements and Rietveld refinement, and physical properties were studied by means of electrical resistivity, magnetic susceptibility and specific heat measurements. These measurements reveal that ErV2Al20 is a Curie-Weiss paramagnet down to 1.95 K with an effective magnetic...

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• Hydrogen Production from Energy Poplar Preceded by MEA Pre-Treatment and Enzymatic Hydrolysis

  Publikacja

  • K. Kucharska
  • R. Łukajtis
  • E. Słupek
  • H. Cieśliński
  • P. Rybarczyk
  • M. A. Kamiński

  - MOLECULES - Rok 2018

  The need to pre-treat lignocellulosic biomass prior to dark fermentation results primarily from the composition of lignocellulose because lignin hinders the processing of hard wood towards useful products. Hence, in this work a two-step approach for the pre-treatment of energy poplar, including alkaline pre-treatment and enzymatic saccharification followed by fermentation has been studied. Monoethanolamine (MEA) was used as the...

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• Rapid Multi-Criterial Antenna Optimization by Means of Pareto Front Triangulation and Interpolative Design Predictors

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - IEEE Access - Rok 2021

  Modern antenna systems are designed to meet stringent performance requirements pertinent to both their electrical and field properties. The objectives typically stay in conflict with each other. As the simultaneous improvement of all performance parameters is rarely possible, compromise solutions have to be sought. The most comprehensive information about available design trade-offs can be obtained through multi-objective optimization...

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• Multi-objective optimization of the cavitation generation unit structure of an advanced rotational hydrodynamic cavitation reactor

  Publikacja

  • X. Sun
  • Z. Yang
  • X. Wei
  • Y. Tao
  • G. Boczkaj
  • J. Y. Yoon
  • X. Xuan
  • S. Chen

  - ULTRASONICS SONOCHEMISTRY - Rok 2021

  Hydrodynamic cavitation (HC) has been widely considered a promising technique for industrial-scale process intensifications. The effectiveness of HC is determined by the performance of hydrodynamic cavitation reactors (HCRs). The advanced rotational HCRs (ARHCRs) proposed recently have shown superior performance in various applications, while the research on the structural optimization is still absent. The present study, for the...

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• Expedited EM-Driven Design of Miniaturized Microwave Hybrid Couplers Using Surrogate-Based Optimization

  Publikacja

  • P. Kurgan

  - Rok 2017

  Miniaturization of microwave hybrid couplers is important for contemporary wireless communication engineering. Using standard computer-aided design methods for development of compact structures is extremely challenging due to a general lack of computationally efficient and accurate simulation models. Poor accuracy of available equivalent circuits results from neglecting parasitic cross-couplings that greatly affect the performance...

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• Thermochemical Conversion of Biomass and Municipal Waste into Useful Energy Using Advanced HiTAG/HiTSG Technology

  Publikacja

  • J. Stąsiek
  • M. Szkodo

  - ENERGIES - Rok 2020

  An advanced thermal conversion system involving high-temperature gasification of biomass and municipal waste into biofuel, syngas or hydrogen-rich gas is presented in this paper. The decomposition of solid biomass and wastes by gasification is carried out experimentally with a modern and innovative regenerator and updraft continuous gasifier, among others. A ceramic high-cycle regenerator provides extra energy for the thermal conversion...

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• Forecasting energy consumption and carbon dioxide emission of Vietnam by prognostic models based on explainable machine learning and time series

  Publikacja

  • T. T. Le
  • P. Sharma
  • S. M. Osman
  • M. Dzida
  • P. Q. P. Nguyen
  • M. H. Tran
  • D. N. Cao
  • V. D. Tran

  - Clean Technologies and Environmental Policy - Rok 2024

  This study assessed the usefulness of algorithms in estimating energy consumption and carbon dioxide emissions in Viet- nam, in which the training dataset was used to train the models linear regression, random forest, XGBoost, and AdaBoost, allowing them to comprehend the patterns and relationships between population, GDP, and carbon dioxide emissions, energy consumption. The results revealed that random forest, XGBoost, and AdaBoost...

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• Cross-border transmission line configuration influence on the electrical power and energy billing process

  Publikacja

  • K. Dobrzyński
  • J. Klucznik
  • Z. Lubośny
  • M. Jaskólski
  • P. Bućko

  - Rok 2018

  In 2015 a connection between the Polish and Lithuanian power systems become fully operational. The connection consists of a 400 kV double circuit transmission line and a back-to-back HVDC substation located on the Lithuanian side. A magnetic couplings between the circuits of the transmission line cause that during power transmission a different values of active power losses are observed in both circuits. This situation may cause...

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• The protein folding problem: global optimization of force fields

  Publikacja

  • H. Scheraga
  • C. Czaplewski

  - Frontiers in Bioscience-Landmark - Rok 2004

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• Optimal and safe control planning with the use of discrete optimization

  Publikacja

  • Z. Kowalczuk
  • K. Oliński

  - Rok 2008

  W opracowaniu zaproponowano metodę projektowania optymalnych i tolerujących uszkodzenia systemów sterowania opartych na wykorzystaniu algorytmów optymalizacji dyskretnej. Publikacja przedstawia potencjalne wady i zalety metody. Główna idea proponowanego algorytmu sprowadza się do wykorzystania struktury grafu przepływowego w celu stworzenia reprezentacji dynamiki własnej danego procesu. Poszukiwana trajektoria optymalna, jeśli...

• Optimization of working conditions of thick-film LSFO bolometers

  Publikacja

  • A. Łoziński
  • P. Wierzba
  • S. Rydzewska

  - Proceedings of SPIE - Rok 2006

  Przedstawiono opracowaną przez autorów metodę wytwarzania bolometrów w technologii LTCC. Jako warstwy aktywne wykorzystano niestechiometryczne tlenki lantanowo-strontowo żelazowe (LSFO). Przedstawiono wyniki pomiarów wybranych właściwości bolometrów oraz charakterystyki wykorzystane w procesie doboru punktu pracy bolometru.

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• Generalized adaptive notch filter with a self-optimization capability

  Publikacja

  • M. Niedźwiecki
  • P. A. Kaczmarek

  - IEEE TRANSACTIONS ON SIGNAL PROCESSING - Rok 2006

  W pracy przedstawiono samonastrajalny wariant tzw. uogólnionego adaptacyjnego filtru wycinającego. Automatycznym strojeniem objęte są dwa współczynniki wzmocnienia adaptacji, odpowiedzialne za śledzenie amplitud i częstotliwości parametrów identyfikowanego obiektu.

• The role of environmental optimization for storing bulls’ sperm cells

  Publikacja

  • A. Kowalczyk
  • M. Kuczaj
  • E. Czerniawska-Piątkowska

  - Systems Biology in Reproductive Medicine - Rok 2020

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• Ships Shore Service Optimization Using the Queueing Theory

  Publikacja

  • D. Bebic
  • L. Stazic
  • I. Komar

  - International Journal of Simulation Modelling - Rok 2019

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• Genetics algorithms in multi-objective optimization of detection observer

  Publikacja

  • Z. Kowalczuk
  • T. Białaszewski

  - Rok 2004

  W rozdziale przedstawia się możliwości zastosowania podejścia genetycznegodo zagadnień wielokryterialnej optymalizacji w przestrzeniach wielowymiaro-wych z wykorzystaniem koncepcji optymalności w sensie Pareto. Jako przykładilustrujący rozważane podejście daje się zadanie syntezy obserwatorów stanusłużących wykrywaniu błądów występujących w układzie sterowania bezzałogowe-go statku latającego oraz w układzie napędowym jednostki...

• Optimization and improvement of the ARQ mechanism in RLC layer in UMTS.

  Publikacja

  • P. Matusz
  • J. Woźniak

  - Rok 2004

  Parametry wydajnościowe warstwy RLC systemu UMTS są silnie uzależnione od ich konfiguracji początkowej i dynamicznych zmian. Celem referatu była prezentacja efektywności pracy warstwy RLC, w trybie AM, ze szczególnym uwzględnieniem mechanizmu ARQ. Zaproponowano procedury optymalizacji ustawień parametrów RLC. Opisano też metody dalszej poprawy efektywności funkcjonowania RLC AM, poprzez zdefiniowanie i zaimplementowanie nowych...

• Performance analysis and optimization of the MAC-d scheduler in UMTS.

  Publikacja

  • P. Matusz
  • J. Woźniak

  - Rok 2004

  Artykuł prezentuje wyniki analizy efektywności pracy schedulera obsługującego dedykowane kanały logiczne podwarstwy MAC-d systemu UMTS. Zbadano wpływ różnych opcji konfiguracyjnych, parametrów i dyscyplin obsługi implementowanych w podwarstwie MAC. Dokonano weryfikacji symulacyjnej. W oparciu o uzyskane wyniki zaproponowano optymalną konfigurację schedulera MAC-d oraz zasady multipleksji kanałów logicznych i selekcji TFC.

• Performance optimization of continuous-time OTA-C filters.

  Publikacja

  • S. Kozieł
  • S. Szczepański

  - Rok 2004

  W pracy przedstawiono analityczne podejśćie do optymalizacji właściwości filtrów OTA-C czasu ciągłego. Zaprezentowano efektywne metody analizy zniekształceń nieliniowych i szumów dla dowolnego filtru OTA-C wykorzystując ogólny model oparty na opisie macierzowym. Rezultaty teoretyczne odnoszące się do kaskadowego filtru typu Butterwotha były weryfikowane na drodze porównawczej z wynikami otrzymanymi na poziomie ''Transistor-Level''...

• Periodic and continuous niching in genetic optimization of detection observers.

  Publikacja

  • Z. Kowalczuk
  • T. Białaszewski

  - Rok 2004

  Niszowanie stanowi mechanizm, którego celem jest utrzymanie gorzej przystosowanych osobników tak, aby populacja była różnorodna (zawierała także osobniki przeciętne i słabiej przystosowane). Niszowanie prowadzi do utrzymania odpowiedniej liczby istniejących gatunków, zarówno tych bardziej licznych (lepiej przystosowanych), jak i tych mniej licznych (słabiej przystosowanych), a przez to zapobiega przedwczesnej zbieżności algorytmów....

• Downside Risk Approach for Multi-Objective Portfolio Optimization

  Publikacja

  • B. Sawik

  - Rok 2012

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• Selected Multiple Criteria Supply Chain Optimization Problems

  Publikacja

  • B. Sawik

  - Rok 2020

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• Multi-Objective Portfolio Optimization by Mixed Integer Programming

  Publikacja

  • B. Sawik

  - SSRN Electronic Journal - Rok 2011

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• Multi-Criteria Optimization for Fleet Size with Environmental Aspects

  Publikacja

  • B. Sawik
  • J. Faulin
  • E. Pérez-Bernabeu

  - Transportation Research Procedia - Rok 2017

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• A Bi-Objective Portfolio Optimization with Conditional Value-at-Risk

  Publikacja

  • B. Sawik

  - Decision Making in Manufacturing and Services - Rok 2010

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• The optimization of CuxO microwires synthesis for improvement in photoelectrochemical performance

  Publikacja

  • J. Sowik
  • P. Mazierski
  • T. Klimczuk
  • K. Nikiforow
  • A. Malankowska
  • A. Zaleska-Medynska

  - JOURNAL OF SOLID STATE CHEMISTRY - Rok 2023

  One of the most important challenges in the fabrication of CuxO microstructures via the electrochemical method is formation of long, regular and well-packed microwires with good adhesion on the Cu substrate and to achieve better photoelectrochemical properties, which can be potentially applied in solar-driven water splitting and CO2 conversion to light hydrocarbons. In this paper, Cu2O photoelectrode has been fabricated by direct...

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• Dimensionless Analysis of Stirling Engine using of Optimization Methods

  Publikacja

  • M. Carlini
  • R. I. Abenavoli
  • K. Rudzińska-Kormańska
  • H. Kormański

  - Rok 2009

  W pracy zaprezetowano wyniki analizy wpływu parametrów konstrukcyjnych silnika Stirlinga na jego wskaźniki jakości.Analizę przeprowadzono na modelu bezwymiarowym wykorzystując metody optymalizacji parametrycznej.

• Automatic Optimization Of Adaptive Notch Filter’s Frequency Tracking

  Publikacja

  • M. Meller

  - Rok 2014

  Estimation of instantaneous frequency of narrowband com- plex sinusoids is often performed using lightweight algo- rithms called adaptive notch filters. However, to reach high performance, these algorithms require careful tuning. The paper proposes a novel self-tuning layer for a recently intr o- ducedadaptive notch filtering algorithm. Analysis shows th at, under Gaussian random-walk type assumptions, the resultin g solution converges...

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• Optimization of microstructure and properties of acceptor-doped barium cerate

  Publikacja

  • K. Gdula-Kasica
  • A. D. Mielewczyk-Gryń
  • S. Molin
  • P. Jasiński
  • A. Krupa
  • B. Kusz
  • M. Gazda

  - SOLID STATE IONICS - Rok 2012

  The presented research concerns acceptor doped barium cerate and the attempts of improvement of its production method that would allow obtaining the solid electrolyte characterized by the particular properties. The authors suggest combining two production methods, molten salt synthesis and self-combustion, in order to achieve the compound material that has some of the advantages of both of the initial methods. An impact of nickel...

• Cooperative multi-provider routing optimization and income distribution

  Publikacja

  • M. Mycek
  • S. Secci
  • M. Pioro
  • J. Rougier
  • A. Tomaszewski
  • A. Pattavina

  - Rok 2009

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• International Network Optimization Conference, Warsaw, Poland 2015

  Publikacja

  • M. Pióro
  • A. Tomaszewski
  • J. Rak

  - Electronic Notes in Discrete Mathematics - Rok 2016

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• Profitable areas in large-scale FTTH network optimization

  Publikacja

  • M. Żotkiewicz
  • M. Mycek
  • A. Tomaszewski

  - TELECOMMUNICATION SYSTEMS - Rok 2016

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• Optimization of Bread Production Using Neuro-Fuzzy Modelling

  Publikacja

  • T. M. Boiński
  • J. Szymański

  - Rok 2023

  Automation of food production is an actively researched domain. One of the areas, where automation is still not progressing significantly is bread making. The process still relies on expert knowledge regarding how to react to procedure changes depending on environmental conditions, quality of the ingredients, etc. In this paper, we propose an ANFIS-based model for changing the mixer speed during the kneading process. Although the...

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• A self-optimization mechanism for generalized adaptive notch smoother

  Publikacja

  • M. Meller

  - SIGNAL PROCESSING - Rok 2016

  Tracking of nonstationary narrowband signals is often accomplished using algorithms called adaptive notch filters (ANFs). Generalized adaptive notch smoothers (GANSs) extend the concepts of adaptive notch filtering in two directions. Firstly, they are designed to estimate coefficients of nonstationary quasi-periodic systems, rather than signals. Secondly, they employ noncausal processing, which greatly improves their accuracy and...

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• Experimental Research on the Energy Efficiency of a Parallel Hybrid Drive for an Inland Ship

  Publikacja

  • W. Litwin
  • W. Leśniewski
  • D. Piątek
  • K. Niklas

  - ENERGIES - Rok 2019

  The growing requirements for limiting the negative impact of all modes of transport on the natural environment mean that clean technologies are becoming more and more important. The global trend of e-mobility also applies to sea and inland water transport. This article presents the results of experimental tests carried out on a life-size, parallel diesel-electric hybrid propulsion system. The eciency of the propulsion system was...

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• MARKAL LONG-TERM POWER GENERATION SCENARIOS FOR POLAND: INCREASING THE SHARE OF RENEWABLE ENERGY SOURCES BY 2040

  Publikacja

  • M. Jaskólski
  • P. Bućko

  - Rok 2015

  In this paper, renewable energy sources (RES) support mechanisms in Poland was presented with perspectives of proposed support system modifications, discussed in the project of Renewable Energy Act. In addition, MARKAL model of RES support mechanism was presented, taking into account technology-specific multiplication factors. Two model runs with emission trading system in place and two additional runs without emission trade were...

• Fast EM-Driven Nature-Inspired Optimization of Antenna Input Characteristics Using Response Features and Variable-Resolution Simulation Models

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - Scientific Reports - Rok 2024

  Utilization of optimization technique is a must in the design of contemporary antenna systems. Often, global search methods are necessary, which are associated with high computational costs when conducted at the level of full-wave electromagnetic (EM) models. In this study, we introduce an innovative method for globally optimizing reflection responses of multi-band antennas. Our approach uses surrogates constructed based on response...

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• ENERGY AND EMISSION QUALITY RANKING OF NEWLY PRODUCED LOW-SULPHUR MARINE FUEL

  Publikacja

  • Z. Korczewski

  - Polish Maritime Research - Rok 2022

  The article describes the methodology of engine tests on new types of low-sulphur marine fuels in laboratory conditions in order to conduct a comprehensive assessment of their suitability for powering full-size marine engines. The innovativeness of the proposed solution consists of adapting the laboratory Diesel Engine Test Bed to carry out experimental tests using residual and alternative fuels so that it is possible to imitate...

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• On Decomposition-Based Surrogate-Assisted Optimization of Leaky Wave Antenna Input Characteristics for Beam Scanning Applications

  Publikacja

  • M. Belen
  • P. Mahouti
  • S. Kozieł
  • A. Caliskan
  • S. Szczepański

  - IEEE Access - Rok 2021

  Recent years have witnessed a growing interest in reconfigurable antenna systems. Travelling wave antennas (TWAs) and leaky wave antennas (LWAs) are representative examples of structures featuring a great level of flexibility (e.g., straightforward implementation of beam scanning), relatively simple geometrical structure, low profile, and low fabrication cost. Notwithstanding, the design process of TWAs/LWAs is a challenging endeavor...

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• A Review of Recent Advances in Human-Motion Energy Harvesting Nanogenerators, Self-Powering Smart Sensors and Self-Charging Electronics

  Publikacja

  • J. Gołąbek
  • M. Strankowski

  - SENSORS - Rok 2024

  In recent years, portable and wearable personal electronic devices have rapidly developed with increasing mass production and rising energy consumption, creating an energy crisis. Using batteries and supercapacitors with limited lifespans and environmental hazards drives the need to find new, environmentally friendly, and renewable sources. One idea is to harness the energy of human motion and convert it into electrical energy...

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• MARKAL long-term power generation scenarios for Poland: Increasing the share of renewable energy sources by 2040

  Publikacja

  • M. Jaskólski
  • P. Bućko

  - Rynek Energii - Rok 2015

  In this paper, renewable energy sources (RES) support mechanisms in Poland was presented with perspec-tives of proposed support system modifications, discussed in the project of Renewable Energy Act. In ad-dition, MARKAL model of RES support mechanism was presented, taking into account technology-specific multiplication factors. Two model runs with emission trading system in place and two additional runs without emission trade...

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• A semiempirical model for low energy electron–atom transport cross sections: The case of noble gases

  Publikacja

  • F. Arretche
  • E. Popovicz Seidel
  • W. Tenfen

  - JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA - Rok 2024

  A semiempirical approach to describe low energy electron–atom transport cross sections of easy implementation and reproduction is presented. The heart of the model is an energy independent two-parameter potential that was adjusted to reproduce the accurate total cross sections for He, Ne, Ar and Kr, measured with a threshold photoelectron source technique from meV up to 20 eV. Once the potential was conceived, the model was validated...

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• High Energy Quality of Buildings 2022/23

  Kursy Online

  • J. Kabrońska

• High Energy Quality of Buildings 2023/24

  Kursy Online

  • J. Kabrońska

• High Energy Quality of Buildings 2024/25

  Kursy Online

  • J. Kabrońska