Rok 2023

• Why is TASK Quarterly a Significant Journal to Publish Your Article? —A Bibliometric Analysis of a Scientific and Technical Journal

  Publikacja

  • B. Adamczak

  - TASK Quarterly - Rok 2023

  A bibliometric analysis of TASK Quarterly in the years 1997-2021 in terms of various bibliometric indicators was performed to celebrate the 25th anniversary of the publication of the first issue of the journal. The number of publications and citations increased over the mentioned span of years. The leading countries in terms of the greatest number of papers published in TASK Quarterly are Poland, Italy, Germany, Ukraine, USA and...

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Rok 2022

• The potential of computational methods for the categorization of architectural objects on the example of media architecture

  Publikacja

  • K. Życzkowska
  • M. Życzkowski

  - TASK Quarterly - Rok 2022

  The paper presents an example of the categorization of architectural objects and assessment of the characteristics of urban space, based on the analysis of specific features of architectural objects and urban landscape. The conducted analysis refers to media architecture and is presented in the complex context of the development of media solutions. The field of influence of IT on architecture is also stressed, both on the architect’s...

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Rok 2021

• POLISH PUBLISHERS OPEN ACCESS POLICIES DATABASE - FUNCTIONALITIES AND ROLE IN THE IMPLEMENTATION OF OPENNESS POLICIES

  Publikacja

  • A. Leszczewicz
  • M. Stankevic
  • J. Sikora

  - TASK Quarterly - Rok 2021

  The aim of the article is to present a base of Polish Publishers Open Access Policies as a tool supporting the scientific community in the implementation of openness policies. It is the first national platform to gather and analyze a publishing policy in the field of Open Access to Polish scientific journals. For scientists, it is a tool for searching for a Polish journal meeting certain criteria. It enables grant recipients to...

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• DATA JOURNALS AND DATA PAPERS IN VARIOUS RESEARCH AREAS AND SCIENTIFIC DISCIPLINES – BIBLIOMETRIC ANALYSIS BASED ON INCITES

  Publikacja

  • B. Adamczak

  - TASK Quarterly - Rok 2021

  The main aim of this work is to provide insight into a bibliometric analysis of Data Journals and Data Papers in terms of research areas, disciplines, publication year and country. In particular, we calculated many bibliometric indicators, especially: the number of publications and citations. Furthermore, this work also investigated the top 20 journals in which scientists published the largest number of Data Papers. It was found...

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Rok 2020

• Some Security Features of Selected IoT Platforms

  Publikacja

  • R. Kałaska
  • P. Czarnul

  - TASK Quarterly - Rok 2020

  IoT (Internet of Things) is certainly one of the leading current and future trends for processing in the current distributed world. It is changing our life and society. IoT allows new ubiquitous applications and processing, but, on the other hand, it introduces potentially serious security threats. Nowadays researchers in IoT areas should, without a doubt, consider and focus on security aspects. This paper is aimed at a high-level...

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• SMART SHOP SERVICES FOR BUILDING CUSTOMER-ORIENTED SCENARIOS

  Publikacja

  • H. Krawczyk
  • A. Sobecki

  - TASK Quarterly - Rok 2020

  The shops of today mostly support the customer by offering him or her products based on basic relationships between products viewed or ordered by users with similar tastes. This common approach may fail in many cases especially when the user does not have sufficient knowledge about the market, or when he or she wants to build a set of products in more than one shop. New categories of smart shop services are proposed in order to...

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• SERVICE-ORIENTED CYBERSPACE FOR IMPROVING CYBERSECURITY

  Publikacja

  • H. Krawczyk

  - TASK Quarterly - Rok 2020

  The paper presents a cyberspace model where different categories of IT services are offered and used largely. A general cybersecurity policy is considered and the corresponding cybersecurity strategies are shown. The role of such technologies as: Internet of Things, Cloud Computing and Big Data is analyzed in order to improve the cybersecurity of a cyberspace. A new kind of service oriented cyberspace is proposed and its main properties...

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• Molecular Dynamics simulations of thermal conductivity of penta-graphene

  Publikacja

  • I. I. Muna
  • S. Winczewski

  - TASK Quarterly - Rok 2020

  The thermal conductivity of penta-graphene (PG), a new two dimensional carbon allotrope and its dependence on temperature, strain, and direction are studied in this paper. The thermal conductivity of PG is investigated using a non-equilibrium molecular dynamics simulation (NEMD) with the Two Region Method by applying the optimized Tersoff interatomic potential. Our study shows that the thermal conductivity of PG (determined for...

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• Influence of addition of carbon nanotubes on rheological properties of selected liquid lubricants - a computer simulation study

  Publikacja

  • A. Chopra
  • S. Winczewski

  - TASK Quarterly - Rok 2020

  This work is motivated by the improvement of anti-friction properties of lubricants by addition of CNTs proved experimentally in literature. In particular, a methodology is developed to compute the shear viscosity of liquid lubricants (Propylene Glycol) based on Molecular Dynamics simulation. Non-Equilibrium molecular dynamics (NEMD) approach is used with a reactive force field ReaxFF implemented in LAMMPS. The simulations are...

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• Bridge of Knowledge: an Internet platform for R2R and R2B transfer of knowledge and promotion of cooperation

  Publikacja

  • H. Krawczyk
  • P. Lubomski

  - TASK Quarterly - Rok 2020

  Currently, the European Commission puts emphasis on supporting collaboration between universities and business. There are many possible ways to create a strong relationship between both these parties. Positive results of such cooperation lead to increased competitiveness of the global market and, in consequence, bring significant growth of innovation. The cooperation between research-to-research (R2R) and research-to-business (R2B)...

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• BIG PROBLEMS WITH BIG DATA

  Publikacja

  • K. Goczyła

  - TASK Quarterly - Rok 2020

  The article presents an overview of the most important issues related to the phenomenon called big data. The characteristics of big data concerning the data itself and the data sources are presented. Then, the big data life cycle concept is formulated. The next sections focus on two big data technologies: MapReduce for big data processing and NoSQL databases for big data storage.

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• Application of the neural networks for developing new parametrization of the Tersoff potential for carbon

  Publikacja

  • A. C. Nwachukwu
  • S. Winczewski

  - TASK Quarterly - Rok 2020

  Penta-graphene (PG) is a 2D carbon allotrope composed of a layer of pentagons having sp2- and sp3-bonded carbon atoms. A study carried out in 2018 has shown that the parameterization of the Tersoff potential proposed in 2005 by Ehrhart and Able (T05 potential) performs better than other potentials available for carbon, being able to reproduce structural and mechanical properties of the PG. In this work, we tried to improve the...

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Rok 2019

• MAGNETOACOUSTIC HEATING AND STREAMING IN A PLASMA WITH FINITE ELECTRICAL CONDUCTIVITY

  Publikacja

  • A. Perelomova

  - TASK Quarterly - Rok 2019

  Nonlinear effects of planar and quasi-planar magnetosound perturbations are discussed. Plasma is assumed to be an ideal gas with a finite electrical conductivity permeated by a magnetic filed orthogonal to the trajectories of gas particles. the excitation of non-wave modes in the filed of intense magnetoacoustic perturbations, i.e., magnetoaciustic heating and streaming, is discussed. The analysis includes a derivation if instantaneous...

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• INTEGRATED FUNCTIONAL SAFETY AND CYBERSECURITY ANALYSIS METHOD FOR SMART MANUFACTURING SYSTEMS

  Publikacja

  • K. Kosmowski
  • M. Śliwiński
  • J. Piesik

  - TASK Quarterly - Rok 2019

  This article addresses integrated functional safety and cybersecurity analysis with regard to: the generic functional safety standard IEC 61508 and the cyber security standard IEC 62443 concerning an industrial automation and control system (IACS). The objective is to mitigate the vulnerability of information technology (IT) and operational technology (OT) systems, and reduce relevant risks taking into account a set of fundamental...

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• Influence of YARN Schedulers on Power Consumption and Processing Time for Various Big Data Benchmarks

  Publikacja

  • K. Drypczewski
  • J. Proficz
  • A. Stepnowski

  - TASK Quarterly - Rok 2019

  Climate change caused by human activities can influence the lives of everybody onthe planet. The environmental concerns must be taken into consideration by all fields of studyincludingICT. Green Computing aims to reduce negative effects of IT on the environment while,at the same time, maintaining all of the possible benefits it provides. Several Big Data platformslike Apache Spark orYARNhave become widely used in analytics and...

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• Current issues of functional safety and cybersecurity analysis of the industrial and critical infrastructures

  Publikacja

  • M. Śliwiński
  • K. Kosmowski
  • E. Piesik

  - TASK Quarterly - Rok 2019

  This article addresses some functional safety assessment procedures with cybersecurity aspects in critical industrial installations with regard to the functional safety requirements specified in standards IEC 61508 and IEC 61511. The functional safety management includes hazard identification, risk analysis and assessment, specification of overall safety requirements and definition of safety functions. Based on the risk assessment...

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Rok 2018

• TASK CLOUD INFRASTRUCTURE IN THE CENTRE OF INFORMATICS – TRICITY ACADEMIC SUPERCOMPUTER & NETWORK

  Publikacja

  • P. Orzechowski

  - TASK Quarterly - Rok 2018

  The cloud solution called the TASK cloud is described. Its main components and the way of their implementation are described. Examples of deployed environments based on the cloud are also presented. Moreover, the idea of combining the cloud and big data platforms is suggested and discussed.

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• Suitability of LoRaWAN Technology for the Development of Maritime Applications

  Publikacja

  • Ł. Wiszniewski

  - TASK Quarterly - Rok 2018

  The LoRaWAN Technology opens new possibilities for gathering and analysis of distributed data. In the paper we concentrate on its maritime usability which was tested by us in the period from June to August 2018. Measurements of the LoRaWAN network coverage in the Bay of Gdansk area were carried out. Various conditions and places were tested. The research was planned in such a way as to gradually increase the range and control the...

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• NUMERICAL ANALYSIS OF SPECIES DIFFUSION AND METHANOL DECOMPOSITION IN THERMOCATALYTIC REACTOR BASED ON THE INTERMETALLIC PHASE OF Ni3Al FOR LOW REYNOLDS NUMBERS

  Publikacja

  • P. Ziółkowski
  • M. Stajnke
  • P. Jóźwik
  • Z. Bojar
  • P. Ziółkowski
  • B. Janusz

  - TASK Quarterly - Rok 2018

  Numerical modelling of hydrogen production by means of methanol decomposition in a thermocatalytic reactor using corrugated foil made of the Ni3Al intermetallic phase is shown in the paper. Experimental results of the flow analysis of mixtures containing helium and methanol in a thermocatalytic reactor with microchannels were used for the initial calibration of the CFD calculations (calculations based on the Computational Fluid...

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• Mashup Approaches for Improving Service Oriented Business Scenarios

  Publikacja

  • H. Krawczyk
  • N. Parsamyan

  - TASK Quarterly - Rok 2018

  Two kinds of business scenarios are considered: application- and service-oriented. It is shown that the former are more flexible and easier reconfigurable for both traditional (human-oriented) and IT services. Moreover, complex IT services can be created by simple IT services using the modern mashup technology. It is the reason why such business scenarios can be modeled by BPMN in much easier ways. A simple example of a supply...

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• 3D Model Preparing Patterns for Interactive Urban Visualization - Guidelines for Graphic Designers Preparing 3D Models for Virtual Reality Applications

  Publikacja

  • D. Pielak
  • M. Kowalski
  • J. Lebiedź

  - TASK Quarterly - Rok 2018

  While working on architectural visualizations, the software developer often has to work with graphic designers who create models in a different environment what can cause many complications. For this reason, it is very important to have some guidelines which can protect both the developer and the designer from commixing mistakes. The paper presents a list of such guidelines based on the authors’ experience. The reader can treat...

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Rok 2017

• The Bridge to Knowledge – Open Access to Scientific Research Results on Multidisciplinary Open System Transferring Knowledge Platform

  Publikacja

  • A. Wałek
  • P. Lubomski

  - TASK Quarterly - Rok 2017

  The European policy of Open Access to scientific research is now one of the key issues discussed in public debates on the future development of scientific communication. The implementation of Open Access tools has significant impact on scientific and economic growth. On the one hand, Open Access accelerates disseminating new research findings and facilitates recognition of authors on a more global scale. On the other hand, Open...

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• Qualitative evaluation of distributed clinical systems supporting research teams working on large-scale data

  Publikacja

  • T. Dziubich

  - TASK Quarterly - Rok 2017

  Inthispaper,fivecontemporaryscalablesystemstosupportmedicalresearchteams are presented. Their functionalities extend from heterogeneous unstructured data acquisition through large-scale data storing, to on-the-fly analyzing by using robust methods. Such kinds of systems can be useful in the development of new medical procedures and recommendation rules for decision support systems. A short description of each of them is provided....

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• Processing of Satellite Data in the Cloud

  Publikacja

  • J. Proficz
  • K. Drypczewski

  - TASK Quarterly - Rok 2017

  The dynamic development of digital technologies, especially those dedicated to devices generating large data streams, such as all kinds of measurement equipment (temperature and humidity sensors, cameras, radio-telescopes and satellites – Internet of Things) enables more in-depth analysis of the surrounding reality, including better understanding of various natural phenomenon, starting from atomic level reactions, through macroscopic...

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• Open extensive IoT research and measurement infrastructure for remote collection and automatic analysis of environmental data.

  Publikacja

  • Ł. Wiszniewski
  • D. Klimowicz

  - TASK Quarterly - Rok 2017

  Internet of Things devices that send small amounts of data do not need high bit rates as it is the range that is more crucial for them. The use of popular, unlicensed 2.4 GHz and 5 GHz bands is fairly legally enforced (transmission power above power limits cannot be increased). In addition, waves of this length are very diffiult to propagate under field conditions (e.g. in urban areas). The market response to these needs are the...

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• Nonlinear phenomena of small-scale sound in a gas with exponential stratification

  Publikacja

  • A. Perelomova

  - TASK Quarterly - Rok 2017

  The nonlinear dynamics of perturbations, quickly varying in space, with comparatively large characteristic wavenumbers k: k>1/H, is considered. H is the scale of density and pressure reduction in unperturbed gas, as the coordinate (H is the so-called height of the uniform equilibrium gas). Coupling nonlinear equations which govern the sound and the entropy mode in a weakly nonlinear flow are derived. They describe the dynamics...

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• Multidisciplinary Open System Transferring Knowledge for R2B Development

  Publikacja

  • H. Krawczyk
  • P. Lubomski

  - TASK Quarterly - Rok 2017

  Despite many efforts, there is still a serious problem in transferring knowledge from research to business. The problem is especially visible in Poland – the cooperation of R2B is ineffective. We are trying to solve this problem using some IT support. The manuscript presents some solutions developed at the Gdańsk University of Technology. In particular, the platform called “MOST Knowledge” is deeply described. Its layer architecture,...

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• JMATRIX - a package for relativistic J-matrix calculations in elastic scattering of electrons from model potentials

  Publikacja

  • P. Syty
  • J. E. Sienkiewicz

  - TASK Quarterly - Rok 2017

  We present a software package JMATRIX, consisting of two computer codes written in FORTRAN 95 and parallelized with OpenMP, implementing the so-called J-matrix method, applied to elastic scattering of electrons on the radial potential, vanishing faster than Coulomb one. In the J-matrix method, physical scattering problem is replaced by using well-defined model, which is solved analytically. Presented software implements both non-relativistic...

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• INFORMATION SOCIETY DEVELOPMENT TRENDS, FROM DATA THROUGH KNOWLEDGE TO WISDOM

  Publikacja

  • H. Krawczyk
  • A. Targowski

  - TASK Quarterly - Rok 2017

  The paper investigates both the causes and effects of the rapid increase in the data volume(BigData)andtheirimpactonhumancognition.TheroleoftheInternetindistributing and exchanging of such data, and their impact on the growth of the Information Society are emphasized. As a result, Wisdom Science – a new kind of research – emerges which has the potential to facilitate more advanced solutions in the digital world. In consequence,...

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• GENERAL DYNAMIC PROJECTING OF MAXWELL EQUATIONS

  Publikacja

  • P. Wojda
  • S. Leble

  - TASK Quarterly - Rok 2017

  A complete – system of Maxwell equations is splitting into independent subsystems by means of a special dynamic projecting technique. The technique relies upon a direct link between field components that determine correspondent subspaces. The explicit form of links and corresponding subspace evolution equations are obtained in conditions of certain symmetry, it is illustrated by examples of spherical and quasi-one-dimensional waves.

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• DATABASE AND BIGDATA PROCESSING SYSTEM FOR ANALYSIS OF AIS MESSAGES IN THE NETBALTIC RESEARCH PROJECT

  Publikacja

  • M. Lewczuk
  • P. Cichocki
  • J. Woźniak

  - TASK Quarterly - Rok 2017

  A specialized database and a software tool for graphical and numerical presentation of maritime measurement results has been designed and implemented as part of the research conducted under the netBaltic project (Internet over the Baltic Sea – the implementation of a multi-system, self-organizing broadband communications network over the sea for enhancing navigation safety through the development of e-navigation services.) The...

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• Curves of thermodynamic states in some fluids with dispersion

  Publikacja

  • A. Perelomova

  - TASK Quarterly - Rok 2017

  variations in the thermodynamic state of a dispersive medium, caused by sound, are studied. A bubbly liquid and a Maxwell fluid are considered as examples. Curves in the plane of thermodynamic states are plotted. They are in fact pictorial images of linear relations of excess pressure and excess density in the acoustic wave which reflect irreversible attenuation of the sound energy. The curves account for the nonlinear generation...

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• Complementary oriented allocation algorithm for cloud computing

  Publikacja

  • P. Orzechowski

  - TASK Quarterly - Rok 2017

  Nowadays cloud computing is one of the most popular processing models. More and more different kinds of workloads have been migrated to clouds. This trend obliges the community to design algorithms which could optimize the usage of cloud resources and be more effiient and effective. The paper proposes a new model of workload allocation which bases on the complementarity relation and analyzes it. An example of a case of use is shown...

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• COMPARATIVE STUDY OF TRADITIONAL AND VIRTUAL TEAMS

  Publikacja

  • B. Krawczyk-Bryłka

  - TASK Quarterly - Rok 2017

  The paper presents two kinds of cooperating teams: traditional and virtual, and proposes a new measure of the team virtuality level. Some representative teamwork characteristics, such as team member competencies, team diversity, leadership, and team decision-making are analyzed and compared depending on the degree of virtuality. Moreover, the team climate as one of the team performance measures is also analyzed and compared in...

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• CENTRAL-FORCE DECOMPOSITION OF THE TERSOFF POTENTIAL

  Publikacja

  • T. H. Tran
  • S. Winczewski

  - TASK Quarterly - Rok 2017

  Central forces play important role in the analysis of results obtained with particle simulation methods, since they allow evaluating stress fields. In this work we derive expressions for a central-force decompositon of the Tersoff potential, which is often used to describe interatomic interactions in covalently bonded materials. We simplify the obtained expressions and discuss their properties.

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• BIG DATA SIGNIFICANCE IN REMOTE MEDICAL DIAGNOSTICS BASED ON DEEP LEARNING TECHNIQUES

  Publikacja

  • A. Kwaśniewska
  • A. Giczewska
  • J. Rumiński

  - TASK Quarterly - Rok 2017

  In this paper we discuss the evaluation of neural networks in accordance with medical image classification and analysis. We also summarize the existing databases with images which could be used for training deep models that can be later utilized in remote home-based health care systems. In particular, we propose methods for remote video-based estimation of patient vital signs and other health-related parameters. Additionally, potential...

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• A SHORT REVIEW OF BLOOD FLOW MODELLING METHODS: FROM MACRO- TO MICROSCALES

  Publikacja

  • K. Kaczorowska-Ditrich
  • K. Tesch

  - TASK Quarterly - Rok 2017

  The aim of this paper it to review various scale approaches to the blood flow modelling. Blood motion may be described by three types of mathematical models according to the observed scales or resolutions, namely microscopic, mesoscopic and macroscopic descriptions. The above approaches are discussed together with their advantages and disadvantages. Several results of mesoscopic simulations are presented with particular attention...

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Rok 2016

• Successive Iterative Method for Higher-Order Fractional Differential Equations Involving Stieltjes Integral Boundary Conditions

  Publikacja

  • T. Jankowski

  - TASK Quarterly - Rok 2016

  In this paper, the existence of positive solutions to fractional differential equations with delayed arguments and Stieltjes integral boundary conditions is discussed. The convergence of successive iterative method of solving such problems is investigated. This allows us to improve some recent works. Some numerical examples illustrate the results.

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• NON-STATIONARY THERMAL SELF-ACTION OF ACOUSTIC BEAMS CONTAINING SHOCK FRONTS IN THERMOCONDUCTING FLUID

  Publikacja

  • A. Perelomova

  - TASK Quarterly - Rok 2016

  Non-stationary thermal self-action of a periodic or impulse acoustic beam containing shock fronts in a thermoconducting Newtonian fluid is studied. Self-focusing of a saw-tooth periodic and impulse sound is considered, as well as that of a solitary shock wave which propagates with the linear sound speed. The governing equations of the beam radius are derived. Numerical simulations reveal that the thermal conductivity weakens the...

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• Multiple Solutions to Third-Order Differential Equations with Derivative Dependence and Deviating Arguments

  Publikacja

  • T. Jankowski

  - TASK Quarterly - Rok 2016

  In this paper, we give some new results for multiplicity of positive (nonnegative) solutions for third-order differential equations with derivative dependence, deviating arguments and Stieltjes integral boundary conditions. We discuss our problem with advanced argument α and arbitrary β ∈ C([0,1],[0,1]), see problem (2). It means that argument β can change the character on [0,1], so β can be delayed in some set J ⊂ [0,1] and advanced...

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• Fractional Problems with Right-Handed Riemann-Liouville Fractional Derivatives

  Publikacja

  • T. Jankowski

  - TASK Quarterly - Rok 2016

  In this paper, we investigate the existence of solutions for advanced fractional differential equations containing the right-handed Riemann-Liouville fractional derivative both with nonlinear boundary conditions and also with initial conditions given at the end point T of interval [0,T ]. We use both the method of successive approximations, the Banach fixed point theorem and the monotone iterative technique, as well. Linear problems...

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• Calculation methods of interaction of electromagnetic waves with objects of complex geometries

  Publikacja

  • M. Shopa

  - TASK Quarterly - Rok 2016

  Modeling of the electromagnetic interaction with different homogeneous or inhomo-geneous objects is a fundamental and important problem. It is relatively easy to solve Maxwellequations analytically when the scattering object is spherical or cylindrical, for example. How-ever, when it loses these properties all that is left for us is to useapproximation models, to ac-quire the solution we need. Modeling of complex, non-spherical,...

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• A high-accuracy method of computation of x-ray waves propagation through an optical system consisting of many lenses

  Publikacja

  • S. Kshevetskii
  • P. Wojda

  - TASK Quarterly - Rok 2016

  The propagation of X-ray waves through an optical system consisting of many X-ray refractive lenses is considered. Two differential equations are contemplated for solving the problem for electromagnetic wave propagation: first – an equation for the electric field, second – an equation derived for a complex phase of an electric field. Both equations are solved by the use of a finite-difference method. The simulation error is estimated...

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Rok 2015

• WIKI-WS as a C2 NIWA Web Service Management Platform

  Publikacja

  • M. Downar

  - TASK Quarterly - Rok 2015

  The Wiki-WS platform was implemented within the C2 NIWA project for production purposes. Wiki-WS stands for developing, managing and maintaining web services. The production deployment needed implementation of several functional improvements and establishing a strong security 7 safety policy. The WikiWS platform has to be used as an educational environmement for developing web sevices and production environment for execution of...

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• Service Recommendation on WIKI-WS Platform

  Publikacja

  • A. Sobecki

  - TASK Quarterly - Rok 2015

  The article presents the issues of recaommendation services for users. The commonly used solutions include known classes of recommendation systems and information about their area of use and the most frequently used algorithms. the issue of choosing the services has been described based on the Wiki-WS platform including a model of cooperation with the recommendation system. The conclusion from the analysis of the proposed model...

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• Retrieval of Heterogeneus Sevices in C2NIWA Repository

  Publikacja

  • J. Szymański

  - TASK Quarterly - Rok 2015

  The paper reviews the methods used for retrieval of information and services. The selected approaches presented in the review inspired us to build retrieval mechanisms in a system for searching the resources stored in the C2NIWA repository. We describe the architecture of the system, its functions and the surrounding subsystems to which it is related. For retrieval of C2NIWA sevices we propos three approaches based on: keyword...

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• Real-Time connection Between Immerse 3D Vizualization Laboratory and Kaskada Platform

  Publikacja

  • Ł. Wiszniewski
  • T. Ziółkowski

  - TASK Quarterly - Rok 2015

  Multimedia stream processing into two cooperative different systems (cluster platform and virtual lab) is considered. The considered selected information about the systems is presented and the idea of its communication when executing the distributed application is proposed. A general schema of the communication architecture is given. Tests of data transmission quality are considered and their results are presented.

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• NUMERICAL SIMULATIONS OF GAP FLOW ABOVE ROTATING DISK

  Publikacja

  • F. Wasilczuk
  • P. Flaszyński
  • P. Doerffer

  - TASK Quarterly - Rok 2015

  A rotating disk can be considered a basic configuration for the investigati ons of the impact of various conditions on the flow through the clearance between the s hrouded turbine blade and the casing. Numerical calculations using Fine/Turbo Numeca were conducted to examine the influence of the rotational velocity and the pressure differ ence across the disk on the flow conditions, especially the mass flow through the clearance....

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• Modern Methods of Software Development

  Publikacja

  • D. Zima

  - TASK Quarterly - Rok 2015

  Software development methods consist of such activities like analysis, planning, development, testing, deployment, maintenance and retirement. All of them can be divided into two main categories - traditional and agile. The objective of this paper is to review some of the most popular traditional, agile and open source development methods. Special attention was paid to the common stages of all methods - testing and maintenance.

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• KOALA Graph Theory Internet Service

  Publikacja

  • K. Giaro
  • K. Ocetkiewicz
  • T. Goluch

  - TASK Quarterly - Rok 2015

  KOALA has been created with the idea of C++ library templates, implementing a broad set of procedures in the fields of algorithmic graph theory and network problems in discreate optimization. During the C2NIWA project, a library has been greatly ectended, the code refactored and enclosed with the internet service available in the public repository of thr project. Today it contains interconnected educational materials in the form...

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