Wyniki wyszukiwania - Biblioteka Nauki

1

Perception and Classification. A Note on Near Sets and Rough Sets

100%

Wolski M.

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tom Vol. 101, nr 1/2

143-155

EN

The paper aims to establish topological links between perception of objects (as it is defined in the framework of near sets) and classification of these objects (as it is defined in the framework of rough sets). In the near set approach, the discovery of near sets (i.e. sets containing objects with similar descriptions) starts with the selection of probe functions which provide a basis for describing and discerning objects. On the other hand, in the rough set approach, the classification of objects is based on object attributes which are collected into information systems (or data tables). As is well-known, an information system can be represented as a topological space (U, τ_E). If we pass froman approximation space (U,E) to the quotient space U/E, where points represent indiscernible objects of U, then U/E will be endowed with the discrete topology induced (via the canonical projection) by τ_E. The main objective of this paper is to show how probe functions can provide new topologies on the quotient set U/E and, in consequence, new (perceptual) topologies on U.

2

Polski program kosmiczny?

100%

Wolski M.

|

2010

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tom R. 14, nr 6

42-43

PL

W ostatnich miesiącach na polskiej scenie kosmicznej wyraźnie drgnęło. Po długim okresie braku realnego postępu jesteśmy świadkami wielu nowych inicjatyw pozwalających patrzeć z umiarkowanym optymizmem na udział naszego kraju w rozwoju technologii kosmicznych.

3

Data warehouse design based on UML language

63%

Barczak A. , Wolski M.

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tom Vol. 1(10)

37--48

EN

Modern management in organizations of the 21st century are efficient and dynamic decisions based on collected and well analyzed data. There are growing needs with regard of data analysis related to multiplanar work in corporations force formation of new data warehouses whose construction becomes more and more complex. In this paper we present one of the design methodologies applying to the design of data warehouses. Transformations were particularly emphasized that enable the application of UML models involving Common Warehouse Metamodel.

4

Theoretical Aspects of Projects Estimation Using the Use Case Points Method

63%

Wolski M. , Pilski M.

Studia Informatica : systems and information technology

|

2010

|

tom Vol. 1-2(14)

39--46

EN

This text is the first one of the series of articles concerning projects’ estimation in Enterprise Architect. In this section, theoretical aspects of function points methods have been presented. Part two entitled: “Example of the Application of the Use of the Case Points Method” constitutes an example along with mathematical calculations and part three entitled: “Project Estimation with the Use of the Method of Use Cases in Enterprise Architect” is a practical application of the function points method in Enterprise Architect.

5

Synchronizacja położenia kątowego wałów w zespole napędowym na bazie pary silników asynchronicznych

63%

Wolski M. , Piątkowski T.

Logistyka

|

2015

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tom nr 4

2143--2151, CD2

PL

Celem artykułu jest przedstawienie tańszej alternatywy dla typowych napędów serwo na bazie bardzo powszechnych w przemyśle zestawów napędowych silnik asynchroniczny – falownik, przez wykorzystanie mikrokontrolera Atmega2560 działającego w pętli sprzężenia zwrotnego z enkoderem AS5040. Wyniki symulacji przedstawiają zadowalające właściwości dynamiczne takiego rozwiązania, tzn. całkowitą kompensację wartości uchybu w stanie ustalonym oraz niewielkie oscylacje i niewielką wartość uchybu w stanach przejściowych.

EN

This article presents a cheaper alternative to conventional servo drives based on common in the industry sets asynchronous motor drive - inverter, through the use of a microcontroller ATmega2560 acting feedback loop AS5040 encoder. The simulation results show satisfactory dynamic properties of such a solution, i.e. the total compensation value of the steady-state error and a small oscillations and little value transient error.

6

XDE.NET jako skuteczne środowisko wytwarzania aplikacji webowych dla systemów mobilnych

63%

Stasiak A. , Wolski M.

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tom R. 11, nr 22

105-132

PL

W artykule przedstawiono opis pakietu narzędziowego VS.NET (Microsoft) z Rational XDE (IBM) do wytwarzania aplikacji werbowych, pracujących w środowisku urządzeń mobilnych na platformie .NET (firmy Microsoft) wraz z metodyką jego użycis, bazującą na procesie wytwórczym Rational Unifed Process. Opisano także metodykę tworzenia projeków w XDE . Szczególną uwagę poświęcono nowym funkcjom środowiska XDE, pozwalającym na badanie własności behawioranych aplikacji oraz dającym możliwości wykonywania testów systemu juz na poziomie specyfikacji języka UML. Opis procesu wytwórczego zilustrowano na przykładzie aplikacji z ograniczeniami czasowymi, zaimplementowanej w ASP.NET, a ptrzeznaczonej na platformę PocketPC.

7

Intussusception as a presentation of Burkitt’s lymphoma: A case series

63%

Bieganska E. A. , Wolski M.

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nr 3

8

Project Estimation Using the Use Case Points Method When Using Enterprise Architect

63%

Wolski M. , Pilski M.

Studia Informatica : systems and information technology

|

2010

|

tom Vol. 1-2(14)

57--65

EN

This text is the third one from the series of articles concerning projects estimation in Enterprise Architect. In the first part ("Theoretical Aspects of Projects Estimation Using the Use Case Points Method" - White Paper published on Sparx Systems Enterprise Architect Community Site), theoretical aspects of the function points method have been presented. In the part two entitled: "Example of the Application of the Use Cases Points Method" (White Paper published on Sparx Systems Enterprise Architect Community Site) an example along with mathematical calculations have been discussed. Whereas in this part practical application of the function points method in Enterprise Architect have been presented.

9

Concept Formation : Rough Sets and Scott Systems

63%

Wolski M. , Gomolińska A.

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tom Vol. 127, nr 1-4

17--33

EN

The paper addresses the problem of concept formation (knowledge granulation) in the settings of rough set theory. The original version of rough set theory implicitly accommodates a lot of well-established philosophical assumptions about concept formation as presented by A. Rand. However, as suggested by S. Hawking and L. Mlodinow, one has also to consider the dynamics of the universe of objects and different scales at which concepts may be formed. These both aspects have already been discussed separately in rough set theory. Different forms of dynamics have been addressed explicitly – especially the case of extending the universe by new objects; in contrast, different scales of description have been addressed implicitly, mainly within the Granular Computing (GrC) paradigm. Following the example of Life, the famous game invented by J. Conway, we describe the corresponding dynamics in Pawlak information systems using a GrC driven methodology. Having dynamics discussed, we address the problem of concept formation at zoom-out scales of description. To this end, we build Scott systems as information systems describing the universe at a coarser scale than the original scale of Pawlak systems. We regard these systems as a special type of classifications, which have already been studied in the context of rough sets by A. Skowron et al.

10

An Incidence Algebra Approach to Knowledge Granulation in Pawlak Information Systems

63%

Wolski M. , Gomolińska A.

Fundamenta Informaticae

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2013

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tom Vol. 128, nr 1-2

223--238

EN

Representation theory is a branch of mathematics whose original purpose was to represent information about abstract algebraic structures by means of methods of linear algebra (usually, by linear transformations and matrices). G.-C. Rota in his famous Foundations defined a representation of a locally finite partially ordered set (locally finite poset) P in terms of a module over a ring \mathbbA, which can further be extended by the addition of a convolution operation to an associative \mathbbA-algebra called an incidence algebra of P. He applied this construction to solve a number of important problems in combinatorics. Our goal in this paper is to discuss the concept of an incidence algebra as a representation of a Pawlak information system. We shall analyse both incidence algebras and information systems in the context of granular computing, a paradigm which has recently received a lot of attention in computer science. We discuss therefore the concept of an incidence algebra on two levels: the level of objects which form a preordered set and the level of information granules which form a poset. Since incidence algebras induced on these two levels are Morita equivalent, we may focus our attention on the incidence algebra of information granules. We take the lattice of closed ideals of this algebra, where the maximal elements serve as a representation of information granules. The poset of maximal closed ideals obtained in this way is isomorphic to the set of information granules of the Pawlak information system equipped with a natural information order.

11

The glial response in the acute lead-induced neurotoxicity in the rat

51%

Struzynska L. , Wolski M. , Rafalowska U.

Acta Neurobiologiae Experimentalis

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1999

|

tom 59

|

nr 3

12

Modelowanie i symulacja hamowni z hamulcem taśmowym

51%

Piątkowski T. , Wolski M. , Osowski P.

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2016

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tom R. 17, nr 6

1074--1077

PL

W artykule przedstawiono model hamowni z pasem ciernym, który wykonano w środowisku Adams. Opracowany model poddano weryfikacji numerycznej ukierunkowanej na analizę reakcji dynamicznych hamowni pojawiających się w przypadku przyłożenia obciążenia zewnętrznego mniejszego oraz większego od mocy badanego silnika. Badania wykonano dla dwóch wybranych sztywności siłomierza hamowni. W efekcie przeprowadzonych badań ustalono, że siłomierz o niepoprawnie dobranej sztywności powoduje powstawanie drgań samowzbudnych, które przyczyniają się do wytworzenia reakcji dynamicznych o bardzo dużych wartościach uniemożliwiających poprawny pomiar mierzonych wielkości.

EN

In the paper the model of the engine test bench with band brake is presented. The model is subject to numerical verifications focused on the analysis of the dynamic reactions of the bench occurring in the case of application of the external load of smaller or bigger than the power of the tested engine. The tests were performed for two selected dynamometer stiffness of the bench. Performed tests show, that the dynamometer of incorrectly selected rigidity contributes to appearance the self-excited vibrations, that cause very big dynamic response, preventing correct measurement of the measured quantities.

13

Zastosowanie nowych insektycydów i ich mieszanin z fungicydami w programie ochrony łuszczyn rzepaku ozimego

51%

Seta G. , Wolski M. , Mrowczynski M.

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nr 2

14

Federating Digital Library Services for Advanced Applications in Science and Education

45%

Kosiedowski M. , Mazurek C. , Stroiński M. , Werla M. , Wolski M.

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tom Vol. 13, nr 2

101-112

EN

Over the recent years numerous digital libraries have been deployed and enabled in the Internet with the use of various digital library frameworks. They contain valuable digital resources use of which is important to a large community of users, especially within the scientific and educational communities. The access to distributed digital resources has been a subject of research for a few years now. In this paper we present our own work in this area, discussing our approach at the distributed digital library platform that is widely used within the PIONIER optical network. We present the methodology for building distributed search and access to digital publications that allowed to create a national federation of digital libraries and that is now under investigation for possible use within various application fields including medicine, science and education.

15

Wzorce projektowe dla piekarni CZS "Samopomoc Chłopska"

38%

Wolski M.

|

nr 4

16

Programming Grid Applications with Gridge

26%

Pukacki J. , Kosiedowski M. , Mikołajczak R. , Adamski M. , Grabowski P. , Jankowski M. , Kupczyk M. , Mazurek C. , Meyer N. , Nabrzyski J. , Piontek T. , Russell M. , Stroiński M. , Wolski M.

|

2006

|

tom Vol. 12, nr 1

47-68

EN

Not many fully integrated Grid solutions exist on today’s market. In this paper we present the PSNC’s Grid toolkit, called Gridge, which is fully integrated Grid environment, consisting of tools and Grid services to enable challenging scientific and commercial applications on the Grid.