Search results for: SOCIAL MEDIA PERFORMANCE

• Boiling heat transfer performance of the thermosiphon heat exchanger

  Publication

  • J. Cieśliński
  • A. Fiuk

  - Year 2006

  Przedstawiono wyniki badań eksperymentalnych prototypowego, termosyfonowgo wymiennika ciepła. W szczególności określono wpływ geometrii pęku rur, stanu powierzchni rurek oraz poziomu cieczy w parowniku na wydajność cieplną wymiennika.

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

  Publication

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

  - JOURNAL OF SOLID STATE CHEMISTRY - Year 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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• Mobile Networks' Analysis in Terms of QoS Performance Assessment

  Publication

  • D. Zmysłowski
  • J. M. Kelner
  • P. Falkowski-Gilski

  - Year 2023

  Quality of service (QoS) assessment is one of the basic processes carried out by mobile network operators (MNOs) and regulators of the telecommunications market. Usually, professional companies carry out measurements for various country areas and use cases (scenarios). In this paper, we show exemplary measurement results carried out in drive tests in the vicinity of the Polish capital by a professional company. The measurement...

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• Dual-wavelength laser polarimeter and its performance capabilities

  Publication

  • M. Shopa
  • Y. Shopa
  • N. Ftomyn

  - OPTO-ELECTRONICS REVIEW - Year 2017

  A dual-wavelength optical polarimetric approach has been proposed as a means of elimination of the systematic errors and estimation of the optical anisotropy parameters for a single DKDP crystal. Our HAUP-related polarimeter uses two semiconductor lasers with the neighbouring wavelengths of 635 nm and 650 nm. Based on the temperature dependence analysis of small characteristic azimuths of light polarization with respect to the...

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• Performance evaluation of parallel background subtraction on GPU platforms

  Publication

  • G. Szwoch

  - Elektronika : konstrukcje, technologie, zastosowania - Year 2015

  Implementation of the background subtraction algorithm on parallel GPUs is presented. The algorithm processes video streams and extracts foreground pixels. The work focuses on optimizing parallel algorithm implementation by taking into account specific features of the GPU architecture, such as memory access, data transfers and work group organization. The algorithm is implemented in both OpenCL and CUDA. Various optimizations of...

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• Prezentacja performance "Wrażliwy obserwator", EuropapunktBremen, Brema, Niemcy

  Publication

  • P. Różycki

  - Year 2019

  Z każdej szafy da się skoczyć! Jestem w Bremie, za kilka godzin mój pobyt tutaj będzie trwał już równy dzień, pierwszy z wielu. Drapię stopę nad kostką, komar, inny zwierz, nie wiem. Pod paznokciami zostaje skóra, czerwień pionowo obejmuje okolice ugryzienia, przecieram oko i piję łyk kawy. Zjadłem moje pierwsze śniadanie tutaj, piję moją pierwszą kawę, okej drugą, ale pierwszą samemu dla siebie. Kawa z ekspresu, pierwszy raz...

• Influence of external climate on natural ventilation performance in buildings

  Publication

  • R. Antczak-Jarząbska

  - Year 2015

  Natural ventilation is driven by either buoyancy forces or wind pressure forces or their combinations that inherit stochastic variation into ventilation rates [ CITATION Hun99 \l 1045 ]. We now that these factors have influence on air flow speed and thermal comfort inside building. This work examines the relationship between external climate and natural ventilation including thermal comfort. The work tries in the first instance...

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• Influence of operation temperature instability on gas sensor performance

  Publication

  • G. Jasiński

  - Year 2017

  Gas sensors based on the semiconducting metal-oxides, such as SnO2, have been found to be very useful for detecting a wide range of gases. The reversible interactions of the gas with the surface of the sensing layer made of semiconducting metal-oxides are responsible for changes of sensor resistance which is usually used as a measure of sensor response. Semiconductor gas sensors are commercially available and applied in numerous...

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• Performance‐driven modeling of compact couplers in restricted domains

  Publication

  • S. Kozieł
  • A. Sigurdsson

  - INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING - Year 2018

  Fast surrogate models can play an important role in reducing the cost of EM-driven design closure of miniaturized microwave components. Unfortunately, construction of such models is challenging due to curse of dimensionality and wide range of geometry parameters that need to be included in order to make it practically useful. In this letter, a novel approach to design-oriented modeling of compact couplers is presented. Our method...

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• Influence of stack temperature on PEM fuel cell performance

  Publication

  • B. Dawidowicz
  • J. Cieśliński

  - Year 2012

  W pracy przedstawiono wpływ temperatury stosu na wydajność ogniwa paliwowego typu PEM dla zadanego obciążenia. Badania ogniwa paliwowego przeprowadzono dla sześciu temperatur pracy stosu z zakresu od 30 oC do 65 oC. Dla najwyższej temperatury stosu, tj. 65 oC, wydajność pracy ogniwa paliwowego była najwyższa. Wraz ze wzrostem temperatury stosu zarejestrowano spadek mocy ogniwa paliwowego od 1015 W dla temperatury 30 oC do 1004...

• Cryptographic Protocols' Performance and Network Layer Security of RSMAD

  Publication

  • M. Sokół
  • S. Gajewski
  • M. Gajewska

  - Year 2012

  W artykule omówiono architekturę bezpieczeństwa warstwy sieciowej Radiowego Systemu Monitorowania i Akwizycji Danych z urządzeń fotoradarowych (w skrócie RSMAD). Bezpieczeństwo w warstwie sieciowej tego systemu jest zapewniane przede wszystkim dzięki wykorzystaniu Virtual Private Network (w skrócie VPN). W tym celu zaimplementowano dwa protokoły IPsec i L2TP.Zastosowane mechanizmy ochrony danych, w tym typy i parametry VPNów zostały...

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• Vibro piles performance prediction using result of CPT

  Publication

  • P. Więcławski

  - Studia Geotechnica et Mechanica - Year 2021

  Vibro piles belong to the group of full displacement piles with an expanded base, characterised by a very high load capacity, especially in non-cohesive soils. The problem is to adopt a reliable method for the determination of full load–settlement (Q–s) curve. A frequent difficulty is the determination of the load capacity limit based on the static load test because the course of the load–settlement curve is of a linear nature....

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• Performance of organic coatings upon cyclic mechanical load

  Publication

  • M. Szociński
  • K. Darowicki

  - PROGRESS IN ORGANIC COATINGS - Year 2020

  A number of engineering structures fail due to the fatigue damage resulting from cyclic mechanical stress. However, as far as organic coatings are concerned this degradation factor remains underestimated. In the paper the authors propose a methodology combining global electrochemical impedance spectroscopy and local atomic force microscopy measurements for evaluation of coating resistance to an impact of repetitive mechanical stress. Typical...

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• The Influence of External Load on the Performance of Microbial Fuel Cells

  Publication

  • S. Potrykus
  • L. Fernando Luis
  • J. Nieznański
  • D. Karkosiński
  • F. Fernandez-Morales

  - ENERGIES - Year 2021

  In this work, the effect of the external load on the current and power generation, as well as on the pollutant removal by microbial fuel cells (MFCs), has been studied by step-wise modifying the external load. The load changes included a direct scan, in which the external resistance was increased from 120 Ω to 3300 Ω, and a subsequent reverse scan, in which the external resistance was decreased back to 120 Ω. The reduction in the...

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• The AFM micrographs and impedance study of epoxy coatings after exposure in corrosive media

  Open Research Data

  open access

  • M. Szociński
  • J. Ryl

  The dataset contains Atomic Force Microscopy (AFM) images and local impedance measurements of epoxy organic coating used as anti-corrosion protection, before and after 2-month exposure to sodium chloride solution. Additionally, there two local impedance spectra recorded after the coating exposure. The first one was recorded on intact coating surface,...

• Cultural and Social History: The Journal of the Social History Society

  Journals

  ISSN: 1478-0038 , eISSN: 1478-0046

• Social Analysis: The International Journal of Cultural and Social Practice

  Journals

  ISSN: 0155-977X , eISSN: 1558-5727

• Southern African Journal of Social Work and Social Development

  Journals

  ISSN: 2415-5829 , eISSN: 2708-9355

• Performance Analysis of Multicast Video Streaming in IEEE 802.11 b/g/n Testbed Environment

  Publication

  • A. Kostuch
  • K. Gierłowski
  • J. Woźniak

  - Year 2009

  The aim of the work is to analyse capabilities and limitations of different IEEE 802.11 technologies (IEEE 802.11 b/g/n), utilized for both multicast and unicast video streaming transmissions directed to mobile devices. Our preliminary research showed that results obtained with currently popular simulation tools can be drastically different than these possible in real-world environment, so, in order to correctly evaluate performance...

• Machine-Learning Methods for Estimating Performance of Structural Concrete Members Reinforced with Fiber-Reinforced Polymers

  Publication

  • F. Kazemi
  • N. Asgarkhani
  • T. Shafighfard
  • R. Jankowski
  • D. Yoo

  - ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING - Year 2024

  In recent years, fiber-reinforced polymers (FRP) in reinforced concrete (RC) members have gained significant attention due to their exceptional properties, including lightweight construction, high specific strength, and stiffness. These attributes have found application in structures, infrastructures, wind power equipment, and various advanced civil products. However, the production process and the extensive testing required for...

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• Graphene-Coated PVDF Membranes: Effects of Multi-Scale Rough Structure on Membrane Distillation Performance

  Publication

  • E. Gontarek-Castro
  • G. Di Luca
  • M. Lieder
  • A. Gugliuzza

  - Membranes - Year 2022

  Graphene-coated membranes for membrane distillation have been fabricated by using a wet-filtration approach. Graphene nanoplatelets have been deposited onto PVDF membrane surfaces. Morphology and physicochemical properties have been explored to evaluate the changes in the surface topography and related effects on the membrane performance in water desalination. The membranes have been tested in membrane distillation plants by using...

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• Performance Assessment of Using Docker for Selected MPI Applications in a Parallel Environment Based on Commodity Hardware

  Publication

  • T. Kononowicz
  • P. Czarnul

  - Applied Sciences-Basel - Year 2022

  In the paper, we perform detailed performance analysis of three parallel MPI applications run in a parallel environment based on commodity hardware, using Docker and bare-metal configurations. The testbed applications are representative of the most typical parallel processing paradigms: master–slave, geometric Single Program Multiple Data (SPMD) as well as divide-and-conquer and feature characteristic computational and communication...

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• Extensions of ETSI performance measurements methodology for statistical results analysis =Rozszerzenia metodologii pomiarów wydajności zaproponowanej przez ETSI przy statystycznej analizy wyników

  Publication

  • S. Kaczmarek
  • M. Młynarczuk
  • M. Narloch
  • M. Sac

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2012

  Next Generation Network (NGN) architecture was proposed by International Telecommunication Union Telecommunication Standardization Sector (ITU-T) to deliver telecommunication services satisfying the needs of modern society for an access to information. The core of NGN service stratum are IP Multimedia Subsystem (IMS) elements acting as service controls units. To assess performance of IMS components, European Telecommunications...

• Performance analysis of an rfid-based 3d indoor positioning system combining scene analysis and neural network methods

  Publication

  • B. Jachimczyk
  • D. Dziak
  • W. Kulesza

  - Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej - Year 2013

  The main purpose of this research is to improve localization accuracy of an active Radio Frequency Identification, RFID tag, in 3D indoor space. The paper presents a new RFID based 3D Indoor Positioning System which shows performance improvement. The proposed positioning system combines two methods: the Scene Analysis technique and Artificial Neural Network. The results of both simulation using Log-Distance Path Loss Model and...

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• ACM Transactions on Modeling and Performance Evaluation of Computing Systems

  Journals

  ISSN: 2376-3639 , eISSN: 2376-3647

• International Journal of Business Performance and Supply Chain Modelling

  Journals

  ISSN: 1758-9401

• Overview of planar antenna loading metamaterials for gain performance enhancement: the two decades of progress

  Publication

  • B. Esmail
  • S. Kozieł
  • S. Szczepański

  - IEEE Access - Year 2022

  Metamaterials (MTMs) are artificially engineered materials with unique electromagnetic properties not occurring in natural materials. MTMs have gained considerable attention owing to their exotic electromagnetic characteristics such as negative permittivity and permeability, thereby a negative refraction index. These extraordinary properties enable many practical applications such as super-lenses, and cloaking technology, and are...

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• Improved performance of LaNi0.6Fe0.4O3 solid oxide fuel cell cathode by application of a thin interface cathode functional layer

  Publication

  • S. Molin
  • P. Jasiński

  - MATERIALS LETTERS - Year 2017

  In this work, novel functional layers were prepared by a low temperature spray pyrolysis method on the oxygen side of the solid oxide cells. Thin layers of Ce0.8Gd0.2O2 and LaNi0.6Fe0.4O3 are prepared between the electrolyte and the porous oxygen electrode. Additionally the influence of the sprayed ceria barrier layer on the zirconia based electrolyte with the new layers is evaluated. Impedance spectroscopy results show improvement...

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• Social Theory and Practice

  Journals

  ISSN: 0037-802X , eISSN: 2154-123X

• ADMINISTRATION IN SOCIAL WORK

  Journals

  ISSN: 0364-3107

• Biodemography and Social Biology

  Journals

  ISSN: 1948-5565 , eISSN: 1948-5573

• Con-ciencia social

  Journals

  ISSN: 1697-3127

• Journal of Social Marketing

  Journals

  ISSN: 2042-6763 , eISSN: 2042-6771

• Philosophy and Social Criticism

  Journals

  ISSN: 0191-4537 , eISSN: 1461-734X

• Journal of Social Archaeology

  Journals

  ISSN: 1469-6053 , eISSN: 1741-2951

• Social Psychology of Education

  Journals

  ISSN: 1381-2890 , eISSN: 1573-1928

• Australian Social Work

  Journals

  ISSN: 0312-407X , eISSN: 1447-0748

• Social Evolution and History

  Journals

  ISSN: 1681-4363

• CRITICAL SOCIAL POLICY

  Journals

  ISSN: 0261-0183 , eISSN: 1461-703X

• Journal of Social Entrepreneurship

  Journals

  ISSN: 1942-0676 , eISSN: 1942-0684

• Humanities and Social Sciences

  Journals

  ISSN: 2300-5327 , eISSN: 2300-9918

• Journal of Social Inclusion

  Journals

  ISSN: 1836-8808

• Ethics & Social Welfare

  Journals

  ISSN: 1749-6535 , eISSN: 1749-6543

• Qualitative Social Work

  Journals

  ISSN: 1473-3250 , eISSN: 1741-3117

• Cogent Social Sciences

  Journals

  ISSN: 2331-1886

• Contemporary Social Science

  Journals

  ISSN: 2158-2041 , eISSN: 2158-205X

• Social Theory & Health

  Journals

  ISSN: 1477-8211 , eISSN: 1477-822X

• Global Social Policy

  Journals

  ISSN: 1468-0181 , eISSN: 1741-2803

• ECONOMIC AND SOCIAL REVIEW

  Journals

  ISSN: 0012-9984

• Behavior and Social Issues

  Journals

  ISSN: 1064-9506 , eISSN: 2376-6786