Search results for: (QOS) QUALITY OF SERVICE

• Justifying the prolongation of the service life of the bearing structure of a tank car when using Y25 bogies

  Publication

  • O. Fomin
  • A. Lovska
  • K. Ivanchenko
  • I. Medvediev

  - Eastern-European Journal of Enterprise Technologies [ Восточно-Европейский журнал передовых технологий ] - Year 2021

  This paper substantiates the use of Y25 bogies under tank cars in order to prolong their service life. The reported study has been carried out for a tank car with rated parameters, as well as the actual ones, registered during full-scale research. Mathematical modeling was performed to determine the basic indicators of the tank car dynamics. The differential equations of motion were solved by a Runge-Kutta method using the Mathcad...

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• Koncepcja modelu do badnia wydajności domeny IP QoS

  Publication

  • S. Kaczmarek
  • P. Żmudziński

  - Year 2005

  Celem artykułu jest przedstawienie koncepcji hierarchicznie rozproszonego brokera MBB (Multiple Bandwidth Broker) realizującego funkcje AC w oparciu o pomiary. Zaproponowane zostały przez autorów modele funkcjonalne brokera centralnego oraz brokera brzegowego. Autorzy zaproponowali także algorytm realizujący MBAC, zaimplementowany w brokerze brzegowym. Prezentowany model koncepcyjny umożliwia zwiększenie skalowalności DS oraz ograniczenie...

• Analytical Traffic Model for a Multidomain IMS/NGN Network Including Service and Transport Stratum

  Publication

  • S. Kaczmarek
  • M. Sac
  • M. Cieśliński

  - Year 2022

  This paper addresses the problem of modelling call processing performance (CPP) in a multidomain Next Generation Network (NGN) architecture including the elements of the IP Multimedia Subsystem (IMS) in service stratum and based on the Multiprotocol Label Switching (MPLS) technology in transport stratum. An analytical traffic model for such an architecture is proposed by integrating the formerly implemented submodels of service...

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• Certified Reference Material - as a necessary tool for the quality control and quality assurance of measurements

  Publication

  • M. Bodnar
  • K. Kochańska
  • M. Rutkowska
  • P. Konieczka
  • J. Namieśnik

  - Analityka: Nauka i Praktyka - Year 2013

  Reference materials are necessary to control and ensure the quality of the measurements. The demand for analytical information on the composition of different material objects makes it necessary to produce an even wider range of materials.

• Trustworthiness and Subversion in Large Service- Oriented Multi-Agent Systems under Virtual Anonymity and Blind Provider Selection

  Publication

  • J. Konorski

  - Year 2023

  To promote honest service provision in multi-agent systems, a Computational Trustworthiness and Rating scheme collects service ratings and computes agents' trustworthiness levels (TLs). Studies of existing schemes fail to reflect closed-loop dynamics of TLs arising from the mutual influence of agents' behavior and TLs, and to capture relevant properties. Recent simulative and analytical models produce results tied to a particular...

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• Service time distribution influence on end-to-end call setup delay calculation in networks with Session Initiation Protocol

  Publication

  • P. Gutkowski
  • S. Kaczmarek

  - Year 2011

  The most important GoS parameter for networks with SIP protocol is end-to-end call setup delay. So far there were no coherent models allowing calculation of these parameters for networks with SIP protocol. Few models were developed but they are insufficient. In the paper we propose model which allows end-to-end call setup delay calculation for networks with SIP protocol. The model is using chain of M/G/1/K models and is applicable...

• Rain Gardens SW quality dataset

  Open Research Data

  open access

  • M. Kasprzyk

  This dataset contains the results of parameters of storm water runoff and storm water quality in rain garden units. Samples were collected from 4 different rain gardens in Gdansk, Poland.

• Optimised Allocation of Hard Quality Sensors for Robust Monitoring of Quality in Drinking Water Distribution Systems

  Publication

  • R. Łangowski
  • M. Brdyś

  - Year 2010

  A problem of optimised placement of the hard quality sensors in Drinking Water Distribution Systems for robust quality monitoring is formulated. Two numerical algorithms to solve the problem are derived. The optimality is meant as achieving a desired trade off between the sensor capital and maintenance costs and resulting robust estimation accuracy of the monitoring algorithm. The robust estimation algorithm recently developed...

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• PRODUCTION AND QUALITY MANAGEMENT copy

  e-Learning Courses

• ACCREDITATION AND QUALITY ASSURANCE

  Journals

  ISSN: 0949-1775 , eISSN: 1432-0517

• Quality Engineering

  Journals

  ISSN: 0898-2112 , eISSN: 1532-4222

• Quality Progress

  Journals

  ISSN: 0033-524X

• Journal of Quality

  Journals

  ISSN: 1022-0690

• Quality in Sport

  Journals

  ISSN: 2450-3118

• Quality Assurance of Educational Processes as the Foundation of the Quality Management System in Gdansk University of Technology

  Publication

  • P. Grudowski

  - Year 2011

  The paper presents a model of quality management system (QMS) developed by the author in Gdansk University of Technology (GUT). The core of the model is internal quality assurance system of educational processes based on the ENQA guidelines. Next described in the paper steps of GUT QMS development are the implementation of one of the normative QMS models (e.g. ISO 9001, ISO/IEC 17025) in selected organizational units of GUT and...

• Data on bicycle traffic in Gdansk paired with weather and air quality data

  Open Research Data

  • A. Romanowska
  • K. Birr

  The file contains data on bicycle traffic registered by counting stations loacted in Gdańsk in the years 2013-2020. The data are paired with weather and air quality data from Gdansk collected for the same period. The data is described below:

• Quality Assurance and Quality Control in the Analytical Chemical Laboratory. A practical approach : Second edition

  Publication

  • P. Konieczka
  • J. Namieśnik

  - Year 2018

  The second edition defines the tools used in QA/QC, especially the application of statistical tools during analytical data treatment. Clearly written and logically organized, it takes a generic approach applicable to any field of analysis. The authors begin with the theory behind quality control systems, then detail validation parameter measurements, the use of statistical tests, counting the margin of error, uncertainty estimation,...

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• Combined No-Reference Image Quality Metrics for Visual Quality Assessment Optimized for Remote Sensing Images

  Publication

  • A. Rubel
  • O. Ieremeiev
  • V. Lukin
  • J. Fastowicz
  • K. P. Okarma

  - Applied Sciences-Basel - Year 2022

  No-reference image quality assessment is one of the most demanding areas of image analysis for many applications where the results of the analysis should be strongly correlated with the quality of an input image and the corresponding reference image is unavailable. One of the examples might be remote sensing since the transmission of such obtained images often requires the use of lossy compression and they are often distorted,...

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• Application of Binary Image Quality Assessment Methods to Predict the Quality of Optical Character Recognition Results

  Publication

  • M. Kopytek
  • P. Lech
  • K. P. Okarma

  - Applied Sciences-Basel - Year 2024

  One of the continuous challenges related to the growing popularity of mobile devices and embedded systems with limited memory and computational power is the development of relatively fast methods for real-time image and video analysis. One such example is Optical Character Recognition (OCR), which is usually too complex for such devices. Considering that images captured by cameras integrated into mobile devices may be acquired...

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• Dynamically configurable platform for service integration

  Publication

  • T. Dziubich
  • K. Dziubich
  • Ł. Budnik
  • S. Nasiadka

  - Year 2008

  W artykule opisano architekturę konfigurowalnego dynamicznie środowiska dla aplikacji zorientowanych na usługi, w szczególnosci na usługi webowe. Środowisko szkieletowe bazujace na specyfikacji OSGi dostarcza interfejsu, dzięki któremu zarzadzanie logika aplikacji nie wymaga jej ponownego uruchomienia. Opisano kluczowe problemy, które muszą być rozwiązane podczas wytwarzania tego typu rozwiązań. zaprezentowano sposób współpracy...

• Simplified algorithm for location service for the UMTS

  Publication

  • J. Stefański

  - Year 2005

  Przedstawiono uproszczony algorytm lokalizowania terminala ruchomego w systemie UMTS. Algorytm ten umożliwia wyznaczanie pozycji geograficznej terminala ruchomego bez znajomości różnic czasowych w synchronizacji stacji bazowych RTD (Relative Time Differences). Opisany został model symulacyjny oraz przedstawiono wyniki efektywności lokalizowania terminala ruchomego w środowisku tzw. złym miejskim. otrzymane rezultaty dowodzą, że...

• A service-oriented approach to the identification of IT Risk

  Publication

  • J. Miler

  - Year 2005

  Artykuł przedstawia ogólne podejście do identyfikacji ryzyka eksploatacji systemów informatycznych, które obejmuje bezpieczeństwo, ochronę, prywatność oraz uzależnienie. Podejście oparte jest na badaniu trybów awarii usług dostarczanych użytkownikom przez oprogramowanie. Identyfikacja ryzyka na podstawie przeglądu usług uzupełniana jest listami kontrolnymi wyprowadzonymi ze standardów, a także klasycznymi technikami analizy bezpieczeństwa...

• BeesyBees: A mobile agent-based middleware for a reliable and secure execution of service-based workflow applications in BeesyCluster

  Publication

  • P. Czarnul
  • M. Matuszek
  • M. Wójcik
  • K. Z. Zalewski

  - Multiagent and Grid Systems - Year 2011

  Integrating distributed services into workflows comes with its own set of challenges, including security, coordination, fault tolerance and optimisation of execution time. This paper presents an architecture and implementation - nicknamed BeesyBees - that allows distributed execution of workflow applications in BeesyCluster using agents. BeesyCluster is a middleware that allows users to access distributed resources as well as publish...

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• METHODS FOR QUALITY ASSURANCE AND CONTROL

  e-Learning Courses

  • P. Konieczka
  • A. Wasik

• Optimised Robust Placement of Hard Quality Sensors for Robust Monitoring of Quality in Drinking Water Distribution Systems

  Publication

  • R. Łangowski
  • M. Brdyś
  • R. Qi

  - Year 2012

  A problem of optimised robust placement of the hard quality sensors in Drinking Water Distribution Systems under several water demand scenarios for robust quality monitoring is formulated. Numerical algorithms to solve the problem are derived. The optimality is meant as achieving at the same time a desired trade off between the sensor capital and maintenance costs and resulting robust estimation accuracy of the monitoring algorithm...

• The role and the place of method validation in the Quality Assurance and Quality Control (QA/QC) System

  Publication

  • P. Konieczka

  - CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY - Year 2007

  Oznaczanie analitów na coraz niższych poziomach stężeń w próbkach charakteryzujących się coraz bardziej złożonym składem matrycy to jeden z głównych kierunków rozwojowych analityki chemicznej. Jest to zadanie niezwykle trudne i skomplikowane, w związku z czym stanowi wielkie wyzwanie dla analityków i wymaga zwrócenia uwagi na problem kontroli i zapewnienia jakości uzyskiwanych wyników (ang. Quality Assurance/Quality Control - QA/QC).W...

• Quality control procedures in Pomeranian Digital Library

  Publication

  • M. Szwoch

  - Zeszyty Naukowe Wydziału ETI Politechniki Gdańskiej. Technologie Informacyjne - Year 2010

  This paper concerns a quality control in digital libraries projects. At first, general goals of such projects are presented together with some restrictions concerning non-commercial projects. Then some quality factors for digital objects are presented. Finally, a quality control model for Pomeranian Digital Library (PDL) is proposed. The model assumes three levels of quality control and takes into account specific features of PDL....

• Projektowanie sieci pakietowych z QOS - projekt 24/25

  e-Learning Courses

  • S. Kaczmarek

• Quality of Test Specification by Application of Patterns

  Publication

  • J. Zander

  - Year 2008

  Embedded system and software testing requires sophisticated methods, which are nowadays frequently supported by application of test patterns. This eases the test development process and contributes to the reusability and maintainability of the test specification. However, it does not guarantee the proper level of quality and test coverage in d ifferent dimensions of the test specification. In this paper the quality of the test...

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• The effect of long-term service at elevated temperatures on structure and mechanical properties of Cr-Mo-V steel

  Publication

  • J. Ćwiek
  • J. Łabanowski
  • S. Topolska

  - Archives of Materials Science and Engineering - Year 2011

  Purpose: of this paper is to reveal the microstructural changes in 13HMF steel exposed to long-term service at elevated temperatures. The degradation of bainite structure was determined and carbides morphology has been examined. The influence of carbides evolution was discussed in dependence of creep rupture strength and mechanical properties of the steel.

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• Model analityczny budżetu czasu opóźnienia w sieci IP QoS

  Publication

  • S. Kaczmarek
  • A. Karbownik

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2008

  Podstawowym celem artykułu jest przedstawienie i przebadanie sposobu podziału opóźnienia end-to-end dla danego strumienia pakietów wzdłuż łączy ścieżki, tak aby wolne zasoby przydzielane były w sposób gwarantujący jakość, a jednocześnie miała miejsce na tej ścieżce maksymalizacja liczby przyjętych do obsługi strumieni pakietów. Proces ten może dotyczyć zarówno łańcucha domen jak i łańcucha łączy. Opisany model LSS oparty jest na...

• Aplikacja do zarządzania zasobami domeny pakietowej z IP QoS

  Publication

  • K. Chmielewski
  • M. Ciszewski
  • S. Kaczmarek
  • M. Schielmann

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2010

  Wraz z upublicznieniem Internetu i jego globalizacją pojawiła się potrzeba realizacji usług czasu rzeczywistego, a co za tym idzie potrzeba zapewnienia jakości poprzez rozróżnienie klas ruchu i traktowanie każdej z tych klas według innych reguł obsługi. W artykule przedstawiono system zarządzania zasobami domeny pakietowej opartej na architekturze DiffServ. Omawiany system pracuje w strukturze warstwowej - w warstwie zarządzania,...

• INTER-LAYER SHARING OF BACKUP PATH CAPACITIES PROVIDING FAST SERVICE RECOVERY IN IP-MPLS/WDM NETWORKS

  Publication

  • W. Molisz
  • J. Rak

  - Year 2013

  In this paper, we investigate the issue of providing the transmission continuity in IP-MPLS/WDM networks in the presence of failures of nodes/links. Special focus is put on assuring fast restoration of flows affected after a failure in a scenario assuming sharing the backup path capacities in order to decrease the overall bandwidth consumption. In particular, we propose a new approach to inter-layer sharing of link capacity reserved...

• Data on bicycle traffic in Lodz (Poland) paired with weather and air quality data

  Open Research Data

  open access

  • A. Romanowska
  • K. Birr

  The file contains data on bicycle traffic registered by counting stations loacted in Lodz in the years 2016-2019. The data are paired with weather and air quality data from Lodz collected for the same period. The data is described below:

• JAKOŚĆ I JEJ ZASTOSOWANIA 2023 | QUALITY AND ITS APPLICATIONS 2023 TOWARDS SUSTAINABLE FUTURE

  Events

  23-11-2023 09:30 - 24-11-2023 15:30

    Politechnika Gdańska i Uniwersytet Gdański  oraz Związek Uczelni Fahrenheita zapraszają do wzięcia udziału w  III Międzynarodowej Konferencji Naukowej    Gdańsk University of Technology and the University of Gdańsk and the Fahrenheit University Association invite you to take part in the 3rd International...

• TOTAL QUALITY MANAGEMENT 23/24

  e-Learning Courses

  • E. Marjańska

• TOTAL QUALITY MANAGEMENT 24/25

  e-Learning Courses

  • E. Marjańska

• Redefining quality and organizational maturity in 21st century

  Publication

  • P. Grudowski
  • M. Wiśniewska

  - Year 2013

  The article presents new tendencies in quality management approach in the opinion of the one of the best known European quality expert Professor John Oakland

• Lipids and Food Quality

  Publication

  • I. Sinkiewicz

  - Year 2023

  This chapter deals with lipids present in food as well as their chemical, biological, and functional properties. The chapter begins with a presentation of the main groups of lipids including their chemical structure and physical properties. The physical properties of lipids affecting food processing are covered. Then, the role of lipids in human nutrition is presented. This is followed by a description of the undesirable changes...

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• Air quality policy in the U.S. and the EU – a review

  Publication

  • K. Kuklińska
  • L. Wolska
  • J. Namieśnik

  - Atmospheric Pollution Research - Year 2015

  The high level of atmospheric pollution is a global problem that has taken on particular significance in recent years and will continue to grow in the near future. Air pollution directly affects the health, living organisms, vegetation, water, soil and buildings. Additionally, it moves easily even over long distances. Certain air pollutants influence the climate, cause negative processes in the protective ozone layer and contribute...

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• Electronic Noses for Indoor Air Quality Assessment

  Publication

  • T. Majchrzak
  • W. Wojnowski
  • T. Dymerski
  • J. Gębicki
  • J. Namieśnik

  - Year 2018

  This chapter presents a proposal of the use of electronic noses in the monitoring of indoor air quality. The main focus is put on the detailed characteristics of today’s indoor air quality control methods, the types of pollution in the air, and the development of electronic noses for air testing. Currently, scientists seek methodological and structural solutions that would enable real-time online indoor air control. It has been...

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• Journal of In-Service Education

  Journals

  ISSN: 1367-4587

• Intelligent Service Robotics

  Journals

  ISSN: 1861-2776 , eISSN: 1861-2784

• The Health service journal

  Journals

  ISSN: 0952-2271

• Journal of Service Management

  Journals

  ISSN: 1757-5818 , eISSN: 1757-5826

• JOURNAL OF SERVICE RESEARCH

  Journals

  ISSN: 1094-6705 , eISSN: 1552-7379

• SERVICE INDUSTRIES JOURNAL

  Journals

  ISSN: 0264-2069 , eISSN: 1743-9507

• SOCIAL SERVICE REVIEW

  Journals

  ISSN: 0037-7961 , eISSN: 1537-5404

• Burst loss probability for the combination of extended offset time based service differentiation scheme and PPS in optical burst switching network

  Publication

  • S. Kaczmarek
  • P. Kostecki

  - Year 2009

  In the paper analytical model for calculating burst loss probabilities for the combination of two service differentiation schemes for OBS network namely: extended offset time based scheme and PPS (Preemption Priority Schemes) is revised. Moreover authors introduce analytical model for calculating burst loss probabilities for an optical path when OBS network employs both service differentiation schemes and JET signaling. The comparison...

• Quality assurance of alcoholic beverages by electronic nose

  Publication

  • T. Dymerski
  • T. Chmiel
  • P. Biernacka
  • C. Fijało

  - Year 2011

  Quality is very important attribute of every alcoholic beverage. It is very significant to satisfy consumers and assure food quality. Flavour, colour and taste constitute a great matter not only for connoisseurs. Due to these features, the whole manufacturing process need to be monitored. This paper presents a high-class devices useful in assessing of beverage quality. Electronic noses offer quick real-time analysis, which is very...