00314nas a2200121   4500000000100000000000100001008004100002100002400043700001600067700002000083700001700103245007200120       2002                            d1 aTadeusz Czachórski1 aJ. Fourneau1 aSławomir Nowak1 aF. Quessette00aPerformance of a mixed deflection and convergence routing algorithm00350nas a2200157   4500000000100000000000100001000000100002008004100003100002400044700001600068700002000084245005500104300001200159490000700171022001400178       2002                            d1 aTadeusz Czachórski1 aJ. Fourneau1 aSławomir Nowak00aSymulacyjne Badanie routingu w sieciach optycznych  a45–580 v2A  a0208-728600479nas a2200157   4500000000100000000000100001008004100002260002000043100002100063700002300084700002500107700002000132245006300152490000700215520009900222       2009                            d  bSpringer Verlag1 aJoanna Domańska1 aPrzemysław Głomb1 aPrzemysław Kowalski1 aSławomir Nowak00aModeling of Internet 3D Traffic Using Hidden Markov Models0 v643 a<p>Artykuł podejmuje temat modelowania złożoności przesyłu siatek progresywnych 3D.</p>
00354nas a2200133   4500000000100000000000100001008004100002100001900043700002100062700002000083700002400103245007000127022002300197       2010                            d1 aAdam Domański1 aJoanna Domańska1 aSławomir Nowak1 aTadeusz Czachórski00aA contribution to the fair scheduling for the TCP and UDP streams  aISBN 3-642-13860-800287nas a2200097   4500000000100000000000100001008004100002100002300043700002000066245010300086       2008                            d1 aPrzemysław Głomb1 aSławomir Nowak00aExperimental rate distortion analysis of image coder with contourlet transform and SPIHT algorithm00675nas a2200157   4500000000100000000000100001000000100002008004100003100001500044700002000059245006800079300001400147490000700161520033500168022001400503       2011                            d1 aM. Wróbel1 aSławomir Nowak00aModel of the network physical layer for modern wireless systems  a147–1590 v233 aIn the article the detailed and flexible model of physical layer PHY for discrete events simulations (DES) in proposed. The model was implemented using SimPy simulator and evaluated using simplified 802.11 protocol model. To proof the correctness of the model some results of selected 802.11 parameters verification are presented.  a1896-533400349nas a2200145   4500000000100000000000100001008004100002260001000043100001800053700002000071700002400091700002200115700002000137245004600157       2008                            d  bWKiŁ1 aMateusz Nowak1 aSławomir Nowak1 aTadeusz Czachórski1 aAndrzej Kwiecień1 aStefan Węgrzyn00aContemporary aspects of computer networks00652nas a2200133   4500000000100000000000100001000000100002008004100003100001800044700002000062245008400082490000700166520034500173       2009                            d1 aMateusz Nowak1 aSławomir Nowak00aSynchronisation concept for distributed simulation of networks with packet loss0 v303 aWe propose a concept of a new synchronisation method of distributed event-driven simulation of computer networks with non-zero rate of lost packets (frames), e.g. wireless networks. Thanks to treating straggler messages (all or some of them) as messages informing of damaged frames, better performance of distributed simulation is expected.00326nas a2200145   4500000000100000000000100001000000100002008004100003100001800044700002000062245006300082300001400145490000700159022001400166       2007                            d1 aMateusz Nowak1 aSławomir Nowak00aParallel simulations with modified INET simulation package  a147–1560 v19  a1896-533400337nas a2200145   4500000000100000000000100001008004100002260001300043100001800056700002000074700001600094700002200110245004500132300001400177       2011                            d  bSpringer1 aMateusz Nowak1 aSławomir Nowak1 aPiotr Pecka1 aKrzysztof Grochla00aContent Identification in PI CAN Network  a164–17200353nas a2200109   4500000000100000000000100001008004100002260003400043100002000077700002000097245012600117       2004                            d  bWydawnictwa Naukowo Technicze1 aSławomir Nowak1 aAndrzej Grzywak00aNanotechnologia i nanoinformatyka w Europie i na Swiecie, Rozdział w książce Internet w Społeczeństwie Informacyjnym00291nas a2200109   4500000000100000000000100001008004100002260005100043100002000094700002000114245004700134       2003                            d  bWyższa Szkoła Biznesu w Dąbrowie Górniczej1 aSławomir Nowak1 aAndrzej Grzywak00aInternet w społęczeństwie informacyjnym00328nas a2200121   4500000000100000000000100001008004100002260004300043100002000086700002000106700002000126245006000146       2005                            d  bWydawnictwa Komunikacji i Łączności1 aSławomir Nowak1 aAndrzej Grzywak1 aPiotr Pikiewicz00aNowe Technologie w Komputerowych Systemach Zarządzania00403nas a2200133   4500000000100000000000100001008004100002260003400043100002000077700002000097700002500117700002400142245010300166       2004                            d  bWydawnictwa Naukowo Technicze1 aSławomir Nowak1 aStefan Węgrzyn1 aBolesław Pochopień1 aTadeusz Czachórski00aNanotechnologi i nanoinformatyka, Rozdział w książce Współczesne problemy sieci komputerowych01109nas a2200109   4500000000100000000000100001008004100002260005100043100002000094245008200114520080300196       2005                            d  c06bIITIS PANaUl. Bałtycka 5, 44-100 Gliwice1 aSławomir Nowak00aSystemy informatyki realizujące bezpośrednio procesy wytwarzania produktów3 aOrganizacji i porządkowaniu ruchu służą, zarówno w systemach technicznych jak i w organizmach biologicznych systemy informatyki. Obecnie, jako najbardziej znane, można wymienić dwa następujące systemy: - systemy informatyki wspomagające realizację procesów obliczeniowych, oparte na komputerach, które będziemy nazywać technicznymi systemami informatyki. - systemy informatyki zawarte w organizmach biologicznych, realizujące bezpośrednie wytwarzanie niektórych materiałów i produktów, potrzebnych tym organizmom, które będziemy nazywali biologicznymi systemami informatyki. Teza pracy: możliwa jest, poza organizmami biologicznymi, techniczna realizacja systemów informatyki służących do bezpośredniej realizacji niektórych, potrzebnych nam materiałów i produktów.00230nas a2200097   4500000000100000000000100001008004100002260000900043100002000052245006000072       2003                            d  bIEEE1 aSławomir Nowak00aTechnical nanosystems based on the biological solutions00267nas a2200133   4500000000100000000000100001000000100002008004100003100002000044245003400064300001400098490000700112022001400119       2003                            d1 aSławomir Nowak00aThe manufacturing nanosystems  a235–2440 v14  a0867-212100304nas a2200133   4500000000100000000000100001000000100002008004100003100002000044245007300064300001200137490000700149022001400156       2003                            d1 aSławomir Nowak00aModel systemu informatycznego wzorowanego na systemach biologicznych  a87–950 v2A  a0208-728600244nas a2200109   4500000000100000000000100001008004100002260000900043100002000052245004800072300001400120       2002                            d  bIEEE1 aSławomir Nowak00aThe nanosystems structures of manufacturing  a381–38400287nas a2200133   4500000000100000000000100001000000100002008004100003100002000044245005600064300001200120490000700132022001400139       2002                            d1 aSławomir Nowak00aKoncepcje realizacji procesów nanotechnologicznych  a45–580 v2A  a0208-728600276nas a2200121   4500000000100000000000100001000000100002008004100003100002000044245006200064300001400126022001400140       2001                            d1 aSławomir Nowak00aWykorzystanie mechanizmu RED w regulacji ruchu sieciowego  a131–143  a0208-728600270nas a2200133   4500000000100000000000100001000000100002008004100003100002000044245003700064300001400101490000700115022001400122       2001                            d1 aSławomir Nowak00aNanotechnology and Nanocomputers  a195–2040 v13  a0867-212101046nas a2200181   4500000000100000000000100001000000100002008004100003260000600044100002000050700002300070700001800093245010000111300001400211490000600225520061900231022001400850       2013                            d  c81 aSławomir Nowak1 aA. Debudaj-Grabysz1 aMateusz Nowak00aEvaluations of the new synchronization method for the parallel simulations of wireless networks  a698–7020 v53 aThe article describes the implementation of the new synchronization method for parallel discrete event simulation and presents the experimental results obtained from parallel environment. In the proposed method the time steps are introduced and the synchronization occurs only at the end of a time step to achieve reduction of messages, exchanged between local processes of simulation. The method was implemented in C++, using the MPI libraty. The studies have shown that it is possible, under certain conditions and using appropriate hardware architecture, the significant acceleration of distributed simulations.  a1793-820100901nas a2200121   4500000000100000000000100001008004100002100002000043700002200063700001800085245009900103520057700202       2012                            d1 aSławomir Nowak1 aAgnieszka Grabysz1 aMateusz Nowak00aEvaluation of the new synchronization method for the parallel simulations of wireless networks3 aThe article describes the implementation of the new synchronization method for parallel discrete event simulation and presents the experimental results obtained from parallel environment. The method, designed especially for wireless networks simulations, merges paradigms of optimistic and conservative synchronization to achieve reduction of messages, exchanged betweed local processes of simulation. The studies have shown that it is possible, under certain conditions and using appropriate hardware architecture, the significant acceleration of distributed simulations.00302nas a2200121   4500000000100000000000100001008004100002260004300043100002000086700002100106245004700127490000600174       2007                            d  bWydawnictwa Komunikacji i Łączności1 aSławomir Nowak1 aJoanna Domańska00aSieci Komputerowe Aplikacje i zastosowania0 v200308nas a2200121   4500000000100000000000100001008004100002100002000043700002100063700001900084245006900103022001400172       2009                            d1 aSławomir Nowak1 aJoanna Domańska1 aAdam Domański00aSimulation models of fair scheduling for the TCP and UDP streams  a1896-533400417nam a2200169   4500000000100000000000100001008004100002260000800043100002000051700002100071700002200092700002000114700002100134700002200155245004800177020002200225       2009                            d  bWSB1 aSławomir Nowak1 aJoanna Domańska1 aKrzysztof Grochla1 aSławomir Nowak1 aJoanna Domańska1 aKrzysztof Grochla00aSymulator zdarzeń dyskretnych OMNeT++v.3.3  a978-83-88936-70-801032nas a2200193   4500000000100000000000100001000000100002008004100003260000700044100002000051700002100071700001800092700002300110245008500133300001400218490000700232520058500239022001400824       2010                            d  c111 aSławomir Nowak1 aJoanna Domańska1 aMateusz Nowak1 aPrzemysław Głomb00aProgressive 3D meshes transmission: traffic generating and simulation evaluation  a247–2590 v223 aThe paper presents issues related to the progressive transmission of 3D meshes in clientserver architecture. A tool generating network traffic for different 3D scenes and scenarios is presented. The objective was to evaluate the transmission dynamics and possible impact of 3D traffic on the amount of data available in VR browsing client, which relates to browsing QoE (Quality of Experience). Simulation studies were carried out and HMM model of traffic generated by 3D server was worked out, planned for use in modeling works on future internet protocols, servicing 3D traffic.  a1896-533400318nas a2200121   4500000000100000000000100001008004100002100002000043700001900063700002100082700002400103245006900127       2010                            d1 aSławomir Nowak1 aAdam Domański1 aJoanna Domańska1 aTadeusz Czachórski00aSimulation models of fair scheduling for the TCP and UDP streams00307nas a2200121   4500000000100000000000100001008004100002260002400043100002000067700002200087245006200109300001400171       2003                            d  bInformation Society1 aSławomir Nowak1 aKrzysztof Grochla00aSimple Traffic Shaping Algorithm for All-optical Networks  a413–41800351nas a2200145   4500000000100000000000100001000000100002008004100003100002000044700002200064245008400086300001400170490000700184022001400191       2003                            d1 aSławomir Nowak1 aKrzysztof Grochla00aWpływ mechanizmów kształtowania ruchu na wydajność sieci czysto optycznych  a221–2280 v2A  a0208-728600389nas a2200109   4500000000100000000000100001008004100002100002000043700002300063245010600086520008700192       2010                            d1 aSławomir Nowak1 aPrzemysław Głomb00aREMOTE VIRTUAL REALITY: EXPERIMENTAL INVESTIGATIONSOF PROGRESSIVE 3D MESH TRANSMISSION IN IP NETWORKS3 aPerformance Modelling and Evaluation of Heterogeneous Networks, proc. HETNET 2010.00319nas a2200121   4500000000100000000000100001008004100002260005900043100002000102700002400122245003700146300001400183       2001                            d  bWydawnictwo Pracowni Komputerowej Jacka Skalmierskiego1 aSławomir Nowak1 aStanisław Jędruś00aA Detailed ATM Network Simulator  a193–20200297nas a2200121   4500000000100000000000100001008004100002260001700043100002000060700001800080700002400098245005300122       2007                            d  c9bIITiS PAN1 aSławomir Nowak1 aMateusz Nowak1 aTadeusz Czachórski00aParallel simulation of networks with packet loss00246nas a2200109   4500000000100000000000100001008004100002260000800043100002000051700001800071245004700089       2004                            d  bWNT1 aSławomir Nowak1 aMateusz Nowak00aWspółczesne problemy sieci komputerowych00490nas a2200157   4500000000100000000000100001000000100002008004100003100002000044700001800064245005100082300001400133490000700147520016400154022001400318       2004                            d1 aSławomir Nowak1 aMateusz Nowak00aSelforganization in nanosystems of informatics  a311–3200 v163 aIn the paper the problem of technical nanosystems of informatics able to creating compound structures with the use of selforganization phenomena is considered.  a0867-212101126nas a2200193   4500000000100000000000100001008004100002260003400043100002000077700001800097700001900115700002000134700002400154700001500178245006300193490000900256520064500265020002200910       2011                            d  bSpringeraBerlin / Heidelberg1 aSławomir Nowak1 aMateusz Nowak1 aPawel Foremski1 aSergey Balandin1 aKoucheryavy Yevgeni1 aHu Honglin00aSmart Spaces and Next Generation Wired/Wireless Networking0 v68693 aWe present a new synchronization method for parallel discrete event simulation for wireless networks. The method merges paradigms of time-stepped and event-driven simulations to achieve reduction of messages exchanged between local processes of simulation. The method is particularly suitable for wireless network simulation, in which objects share the same physical medium and parallel simulation involves a significant overhead for interprocess communication. The article describes the method and compare it to conservative and optimistic synchronization methods, on the basis of results of simulations of selected wireless network model.  a978-3-642-22874-201130nas a2200181   4500000000100000000000100001008004100002260005000043100002000093700001800113700002200131700002200153700001400175700001300189245007800202300001200280520065600292       2014                            d  bSpringer International Publishing Switzerland1 aSławomir Nowak1 aMateusz Nowak1 aKrzysztof Grochla1 aAndrzej Kwiecień1 aPiotr Gaj1 aP. Stera00aMAGANET - On the need of realistic topologies for AMI network simulations  a79–883 aThe article proposes MAGANET (Map-based Generator of AMI Network Topology), new map-based topology generator, designated for Advanced Metering Infrastructure (AMI) networks as well as for the urban wireless sensor networks (WSNs). The correct, reliable representation of network topology is crucial for the correct performance evaluation on large multihop wireless networks. Most of the current work us different random topologies. In the article we describe proposed new tool and its features. The comparison of the properties of topology provided by MAGANET for three different generation modes: uniform random, grid and map based is also presented.01161nas a2200157   4500000000100000000000100001000000100002008004100003100002000044700001600064700001800080245006700098300001600165520080800181022001400989       2012                            d1 aSławomir Nowak1 aPiotr Pecka1 aMateusz Nowak00aRozproszona baza danych dla lokalizacji treści w sieci PI CAN  a1481–14903 aIdentyfikacja i lokalizacja treści stanowią podstawowe zagadnienia przy opracowywaniu sieci ukierunkowanych na treść (content-centric networks). W artykule przedstawiono implementację oraz badania wydajności mechanizmu Content Registry (CR), który został opracowany na potrzeby projektu Inżynieria Internetu Przyszłości, w części dotyczącej mechanizmów i wymagań dla sieci PI CAN (Paralel Internet Content Aware Network). CR umożliwia wydajne wyszukiwanie, w rozproszonej sieciowej bazie danych rekordów opisu treści, które zawierają podstawowe informacje o lokalizacji treści I wymaganiach w zakresie transmisji sieciowej. Rezultaty badań przedstawione w artykule potwierdzają wysoką efektywność proponowanego rozwiązania w różnych konfiguracjach i topologiach sieciowych.  a1230-349600953nas a2200133   4500000000100000000000100001008004100002260001600043100002000059700001600079700001800095245009500113520061100208       2012                            d  bIEEE Xplore1 aSławomir Nowak1 aPiotr Pecka1 aMateusz Nowak00aContent Registry - the distributed database of content localization for the PI CAN network3 aContent addressing and localization are basic issues in the structure of content-centric networks. This paper presents the implementation and performance evaluation of the Content Registry (CR), developed within the framework of the FIE (Future Internet Engineering) project to meet the requirements of the PI CAN network. The CR allows to find the desired Content Record (containing basic transmission parameters and localization of a content) in the network-distributed content database. The results confirm the CR is highly efficient in various configurations of the logical topology of connected nodes.00344nas a2200145   4500000000100000000000100001008004100002260001000043100002000053700002000073700002000093700002500113700002400138245003600162       2005                            d  bWKiŁ1 aSławomir Nowak1 aStefan Węgrzyn1 aStefan Węgrzyn1 aBolesław Pochopień1 aTadeusz Czachórski00aWysokowydajne sieci komputerowe00325nas a2200121   4500000000100000000000100001008004100002260000900043100002000052700002000072245009700092300001400189       2003                            d  bIEEE1 aSławomir Nowak1 aStefan Węgrzyn00aReproduction and multiplication in the distributed, manufacturing nanosystems of informatics  a860–86200930nas a2200193   4500000000100000000000100001000000100002008004100003260000600044100002000050700002000070700001700090700002100107245006200128300001100190490000700201520051400208022001400722       2006                            d  c51 aSławomir Nowak1 aStefan Węgrzyn1 aJerzy Klamka1 aLech Znamirowski00aSystems of Informatics of the Direct Materials Production  a3–140 v183 aThe results of researches in the area of nanosystems of informatics, self-replication and self-organization processes are presented. Developing and joining together the gotten results into the integral whole permits in these three mentioned scopes to elaborate the scientific bases for the construction of structure of the algorithms and organization of nanosystems of informatics for the direct material production and object fabrication, and the inspiration of processes of the self-organization of objects.  a0867-212101371nas a2200157   4500000000100000000000100001000000100002008004100003100002000044700002000064700002100084245008600105300001400191520099400205022001401199       2005                            d1 aSławomir Nowak1 aStefan Węgrzyn1 aLech Znamirowski00aSelf-organization Process Inside the Set of Elements Inspired by their Properties  a231–2403 aSystems of technical informatics are being used for the realization of computational processes performed on the indicated data in a form of numbers. Computations are not performed in biological systems of informatics but the sets of technological operations which material products are coming into existence for living organism construction. It is possible to create technical systems of informatics which such goals will be realizing like in the case of biological systems and so will be taken to manufacturing objects and products on the basis of the molecular nanotechnology. It leads to three problems connected with the realization of creating technical systems of informatics and it concerns: the nanosystems of informatics, the self-replication, and the self-organization processes. In the paper, a problem of transient states of the process occurred for the self-organization of the object with properties of basic elements constituting this object determined, have been presented.  a0867-212101516nam a2200181   4500000000100000000000100001008004100002260008800043100002000131700002000151700002100171700001700192700002000209245006500229250000600294520101600300020001801316       2006                            d  bWyd. Pracowni Komputerowej Jacka Sklamierskiegoaul. Pszczyńska 44, 44-100 Gliwice1 aSławomir Nowak1 aStefan Węgrzyn1 aLech Znamirowski1 aJerzy Klamka1 aSławomir Nowak00aSystemy Informatyki Bezpośredniego Wytwarzania Materiałów  a13 aPrzedstawione opracowanie wynika z dającej się coraz wyraźniej odczuć potrzeby traktowania i rozwijania informatyki jako ogólnej dziedziny nauki o ruchu i przetwarzaniu informacji wszędzie tam, gdzie ruch i przetwarzanie informacji mają miejsce. Chodzi więc zarówno o różne systemy techniczne, jak i o organizmy biologiczne. Biologiczne systemy informatyki, rozwijające się od miliardów lat, charakteryzują się m.in. tym, że mają w nich miejsce procesy bezpośredniego wytwarzania potrzebnych organizmowi materiałów i produktów. Wzorując się na tym, autorzy niniejszego opracowania podjęli prace nad takimi technicznymi systemami informatyki, w których również mogły być realizowane procesy bezpośredniego wytwarzanie materiałów i produktów. Ponieważ z dotychczasowych naszych prac już obecnie wynika, że taka możliwość istnieje, postanowiliśmy zebrać nasze opracowania w pewną całość, ilustrującą jeden z obecnie podstawowych kierunków rozwojowych w informatyce.  a83-89105-97-700860nas a2200193   4500000000100000000000100001008004100002260003400043100001600077700001800093700002000111700002000131700002400151700001500175245006300190490000900253520038200262020002200644       2011                            d  bSpringeraBerlin / Heidelberg1 aPiotr Pecka1 aMateusz Nowak1 aSławomir Nowak1 aSergey Balandin1 aKoucheryavy Yevgeni1 aHu Honglin00aSmart Spaces and Next Generation Wired/Wireless Networking0 v68693 aContent addressing and localization are the basic issues in design of content-aware networks (CAN). The paper summarizes assumptions for content-aware networks and presents content localization algorithm for PI-CAN, developed within FIE (Future Internet Engineering) project. The algorithm allows to find location of desired content in distributed content database in time O(1)  a978-3-642-22874-200280nas a2200097   4500000000100000000000100001008004100002100002300043700002000066245009600086       2009                            d1 aPrzemysław Głomb1 aSławomir Nowak00aIMAGE CODING WITH CONTOURLET / WAVELET TRANSFORMS AND SPIHT ALGORITHM:AN EXPERIMENTAL STUDY00485nam a2200181   4500000000100000000000100001008004100002260004900043100002000092700001700112700002300129700001300152700002300165700002100188700002200209700002000231245005200251       2004                            d  bWydawnictwo Politechniki ŚląskiejaGliwice1 aStefan Węgrzyn1 aJerzy Klamka1 aSławomir Bugajski1 aM. Gibas1 aRyszard Winiarczyk1 aLech Znamirowski1 aJaroslaw Miszczak1 aSławomir Nowak00aNano i kwantowe systemy informatyki. Wyd.Drugie00503nam a2200193   4500000000100000000000100001008004100002260004900043100002000092700001700112700002300129700001300152700002300165700002100188700002200209700002000231245004000251020001800291       2003                            d  bWydawnictwo Politechniki ŚląskiejaGliwice1 aStefan Węgrzyn1 aJerzy Klamka1 aSławomir Bugajski1 aM. Gibas1 aRyszard Winiarczyk1 aLech Znamirowski1 aJaroslaw Miszczak1 aSławomir Nowak00aNano i Kwantowe Systemy Informatyki  a83-7335-295-300978nas a2200181   4500000000100000000000100001000000100002008004100003100002000044700001700064700002100081700002300102700002000125245004400145300001100189490000700200520058900207       2004                            d1 aStefan Węgrzyn1 aJerzy Klamka1 aLech Znamirowski1 aRyszard Winiarczyk1 aSławomir Nowak00aNano and quantum systems of informatics  a1–100 v523 aIn the present studies on quantum computer systems principles of a quantum logic gates and basic elements of quantum computers are described. The fundamental elements of quantum computer and mathematical backgrounds of suitable quantum computation processes are presented. Specially Toffoli quantum gate and Hadamard quantum gate are discussed in details. Mathematical bases and principles of quantum computations are also mentioned. Finally, the role of nuclear magnetic resonance in quantum computations is investigated. Moreover, the extensive list of references is also presented.00634nas a2200217   4500000000100000000000100001008004100002260004400043100002000087700001800107700002200125700001600147700002400163700001700187700002200204700001700226245008600243856005100329300001400380020002200394       2016                            d  bSpringer International PublishingaCham1 aSławomir Nowak1 aMateusz Nowak1 aKrzysztof Grochla1 aPiotr Pecka1 aTadeusz Czachórski1 aErol Gelenbe1 aKrzysztof Grochla1 aRicardo Lent00aGlobal Queue Pruning Method for Efficient Broadcast in Multihop Wireless Networks  uhttp://dx.doi.org/10.1007/978-3-319-47217-1_23  a214–224  a978-3-319-47217-101417nas a2200145   4500000000100000000000100001008004100002100002000043700001800063700002200081700001600103245011500119300001200234520102500246       2016                            d1 aSławomir Nowak1 aMateusz Nowak1 aKrzysztof Grochla1 aPiotr Pecka00aEfektywne rozgłaszanie w wielohopowej sieci bezprzewodowej. Effective Broadcasts in Multihop Wireless Network  a887-8913 a<p>Znanych jest wiele rozwiązań problemu rozgłaszania wiadomości w sieciach bezprzewodowych typu ad-hoc. Rozwiązania te różnią się w zależności od wielkości sieci, dostępności informacji o topologii, modelu komunikacji, wymagań gwarancji dostarczenia wiadomości itp. Sieci dedykowane są do różnych zastosowań i różnią się specyfiką występujących w nich problemów związanych z komunikacją. W artykule przedstawiono kilka znanych rozwiązań problemu rozgłaszania oraz przedstawiono autorskie rozwiązanie, dedykowane do specyficznego problemu sieci typu AMI (Advanced Metering Infrastructure - zaawansowana infrastruktura pomiarowa). Sieć ta zakładała model komunikacji jeden-do-wielu, stosunkowo niewielką dynamikę zmian w sieci, możliwość istnienia długich ścieżek na drodze transmisji oraz szereg innych wymagań. Analizowane algorytmy nie spełniały postawionych wymagań. Artykuł opisuje opracowaną motodę i porównuje ją do wybranych rozwiązań referencyjncych.</p>
00305nas a2200121   4500000000100000000000100001008004100002260000800043100002000051700001800071700002200089245007200111       2014                            d  cMay1 aSławomir Nowak1 aMateusz Nowak1 aKrzysztof Grochla00aProperties of advanced metering infrastructure networks' topologies00916nas a2200193   4500000000100000000000100001008004100002260001200043100002100055700001800076700002000094700002400114245005900138856006700197300001200264490000800276520041600284022002200700       2018                            d  c08/20181 aJoanna Domańska1 aMateusz Nowak1 aSławomir Nowak1 aTadeusz Czachórski00aEuropean Cybersecurity Research and the SerIoT Project  uhttps://link.springer.com/chapter/10.1007/978-3-030-00840-6_19  a166-1730 v9353 a<p>This paper briefly reviews some recent research in Cybersecurity in Europe funded by the European Commission in areas such as mobile telephony, networked health systems, the Internet of Things. We then outline the objectives of the SerIoT Project which started in 2018 to address the security needs of fields such as Smart Cities, Smart Transportation Systems, Supply Chains and Industrial Informatics.</p>
  a978-3-030-00839-001158nas a2200229   4500000000100000000000100001000000100002008004100003260004400044100002000088700001800108700002200126700001600148700001400164700002200178700002000200245007300220856004800293300001000341520055500351020002200906       2017                            d  bSpringer International PublishingaCham1 aSławomir Nowak1 aMateusz Nowak1 aKrzysztof Grochla1 aPiotr Pecka1 aPiotr Gaj1 aAndrzej Kwiecień1 aMichał Sawicki00aApplication of Fault-Tolerant GQP Algorithm in Multihop AMI Networks  uhttps://doi.org/10.1007/978-3-319-59767-6_6  a70-803 a<p>The paper presents the evaluation of the GQP algorithm in AMI networks using real map based network topologies (low, medium and high density of buildings). The algorithm was compared to the reference algorithms: CB, SBA and DP. It was shown that the GQP algorithm presents the good scalability, relatively optimal number of selected forwarders and by introducing the redundancy factor, good fault tolerance. An improvement to GQP algorithm to add a redundancy factor is proposed, what allows to execute fault tolerant broadcast transmission.</p>
  a978-3-319-59767-600667nas a2200217   4500000000100000000000100001008004100002260001300043100002200056700001800078700001600096700002000112700001400132700001400146700001700160245010900177856006900286300001200355490006000367020002200427       2017                            d  bSpringer1 aKrzysztof Grochla1 aMateusz Nowak1 aPiotr Pecka1 aSławomir Nowak1 aA Zgrzywa1 aK Choroś1 aA Siemiński00aInfluence of message-oriented middleware on performance of network management system: a modelling study.  uhttps://link.springer.com/chapter/10.1007%2F978-3-319-43982-2_33  a379-3930 vAdvances in Intelligent Systems and Computing, Vol. 506  a978-3-319-43981-500439nas a2200157   4500000000100000000000100001008004100002260002000043100001800063700002000081700002100101700002400122245006400146856004900210020002200259       2019                            d  aAarhus, Denmark1 aMateusz Nowak1 aSławomir Nowak1 aJoanna Domańska1 aTadeusz Czachórski00aCognitive Packet Networks for the Secure Internet of Things  uhttps://ieeexplore.ieee.org/document/8766380  a978-1-7281-2171-000408nas a2200145   4500000000100000000000100001008004100002260003500043100001800078700002000096700002100116245005400137856004900191020002200240       2019                            d  c06/2019bIEEEaPrague, Czechia1 aMateusz Nowak1 aSławomir Nowak1 aJoanna Domańska00aCognitive Routing for Improvement of IoT Security  uhttps://ieeexplore.ieee.org/document/8822037  a978-1-7281-3236-502334nas a2200853   4500000000100000000000100001008004100002260002100043100001900064700002100083700002300104700002100127700002400148700002500172700002500197700002800222700002700250700002000277700002100297700002500318700001800343700002500361700002100386700002200407700001800429700001300447700001800460700001900478700002100497700001600518700002100534700001800555700002100573700001900594700001900613700002200632700001900654700001900673700001700692700002100709700002300730700001600753700001800769700002300787700002500810700002200835700001900857700002400876700002400900700001900924700001800943700001800961700002000979700002400999700002001023700002201043700002301065700001501088700001701103700002001120700001801140700002401158700002101182700002101203700002301224700001401247700002401261700002001285700001801305700002401323700001901347245009601366020001801462       2018                            d  bRiver Publishers1 aEnrico Ferrera1 aClaudio Pastrone1 aPaul-Emmanuel Brun1 aRemi De Besombes1 aKonstantinos Loupos1 aGerasimos Kouloumpis1 aPatrick O’Sullivan1 aAlexandros Papageorgiou1 aPanayiotis Katsoulakos1 aBill Karakostas1 aAntonis Mygiakis1 aChristina Stratigaki1 aBora Caglayan1 aBasile Starynkevitch1 aChristos Skoufis1 aStelios Christofi1 aNicolas Ferry1 aHui Song1 aArnor Solberg1 aPeter Matthews1 aAntonio Skarmeta1 aJosé Santa1 aMichail Beliatis1 aMirko Presser1 aJosiane Parreira1 aJuan Martínez1 aPayam Barnaghi1 aShirin Enshaeifar1 aThorben Iggena1 aMarten Fischer1 aRalf Tönjes1 aMartin Strohbach1 aAlessandro Sforzin1 aHien Truong1 aJohn Soldatos1 aSofoklis Efremidis1 aGeorgios Koutalieris1 aPanagiotis Gouvas1 aJuergen Neises1 aGeorge Hatzivasilis1 aIoannis Askoxylakis1 aVivek Kulkarni1 aArne Broering1 aDariusz Dober1 aKostas Ramantas1 aChristos Verikoukis1 aJoachim Posegga1 aDomenico Presenza1 aGeorge Spanoudakis1 aDanilo Pau1 aErol Gelenbe1 aSławomir Nowak1 aMateusz Nowak1 aTadeusz Czachórski1 aJoanna Domańska1 aAnastasis Drosou1 aDimitrios Tzovaras1 aTommi Elo1 aSanteri Paavolainen1 aDmitrij Lagutin1 aHelen Leligou1 aPanagiotis Trakadas1 aGeorge Polyzos00aIoT European Security and Privacy Projects: Integration, Architectures and Interoperability  a978877022007100333nas a2200133   4500000000100000000000100001008004100002260000900043100001600052700001800068700001600086700002000102245007700122       2018                            d  c20181 aPiotr Pecka1 aMateusz Nowak1 aArtur Rataj1 aSławomir Nowak00aSolving large Markov models described with standard programming language00572nas a2200217   4500000000100000000000100001008004100002260001900043100002200062700002000084700001700104700002500121700001800146700002000164700002500184700002200209700002300231245006900254250001800323300001300341       2020                            d  bNow Publishers1 aGianmarco Baldini1 aPiotr Fröhlich1 aErol Gelenbe1 aJose Hernandez-Ramos1 aMateusz Nowak1 aSławomir Nowak1 aStavros Papadopoulos1 aAnastasios Drosou1 aDimitrios Tzovaras00aIoT Network Risk Assessment and Mitigation: The  SerIoT Approach  aJohn Soldatos  a88–10401711nas a2200181   4500000000100000000000100001008004100002260001400043100001700057700002100074700002000095700001800115700002000133245006300153856005800216490000800274520124700282       2020                            d  cJuly 20201 aErol Gelenbe1 aJoanna Domańska1 aPiotr Fröhlich1 aMateusz Nowak1 aSławomir Nowak00aSelf-Aware Networks that Optimize Security, QoS and Energy  uhttps://ieeexplore.ieee.org/abstract/document/91035250 v1083 aThe need to adaptively manage computer systems and networks so as to offer good Quality of Service (QoS) and Quality of Experience (QoE), with secure operation at relatively low levels of energy consumption is challenged by their sheer complexity and the wide variability of the workloads. A possible way forward is through self-awareness, whereby self-measurement and self-observation, together with on-line control mechanisms which operate adaptively to attain the required performance and QoE. We survey the premises for these ideas coming from Cognitive Science and Active Networks, and review recent work on self-aware computer systems and networks, including those that propose the use of Software Defined Networks as a means to implement these concepts. Then we provide some examples from the literature on self-aware systems to illustrate the performance gains that they can provide. Finally we detail an example system and its working algorithms to allow the reader to understand how such a system may be implemented. Measurements showing how it can react rapidly to changing network conditions regarding Quality of Service (QoS) and security are also presented. Some conclusions and suggestions for further work are also presented
01468nas a2200157   4500000000100000000000100001008004100002100001900043700002000062700002000082700002500102700002200127245007700149490000700226520107700233       2020                            d1 aPawel Foremski1 aSławomir Nowak1 aPiotr Fröhlich1 aJose Hernandez-Ramos1 aGianmarco Baldini00aAutopolicy: Automated Traffic Policing for Improved IoT Network Security0 v203 a<p>A 2.3Tbps DDoS attack was recently mitigated by Amazon, which is a new record after the 2018 GitHub attack, or the famous 2016 Dyn DNS attack launched from hundreds of thousands of hijacked IoT devices. These attacks may disrupt the lives of billions of people worldwide, as we increasingly rely on the Internet. In this paper, we tackle the problem that hijacked IoT devices are often the origin of these attacks. With the goal of protecting the Internet and local networks, we propose Autopolicy: a system that automatically limits the IP traffic bandwidth - and other network resources - available to IoT devices in a particular network. We make use of the fact that devices such as sensors, cameras, and smart home appliances rarely need their high-speed network interfaces for normal operation. We present a simple yet flexible architecture for Autopolicy, specifying its functional blocks, message sequences, and general operation in a Software Defined Network. We present experimental validation results, and release a prototype open source implementation.</p>
02579nas a2200193   4500000000100000000000100001008004100002260001200043100002000055700001800075700002200093700002600115700001900141245011800160856004500278490000700323520204100330022001402371       2020                            d  c09/20201 aSławomir Nowak1 aMateusz Nowak1 aGianmarco Baldini1 aJosé Hernandez-Ramos1 aRicardo Neisse00aMitigation of Privacy Threats due to Encrypted Traffic Analysis through a Policy-Based Framework and MUD Profiles  uhttps://www.mdpi.com/2073-8994/12/9/15760 v123 a<p>It has been proven in research literature that the analysis of encrypted traffic with statistical analysis and machine learning can reveal the type of activities performed by a user accessing the network, thus leading to privacy risks. In particular, different types of traffic (e.g., skype, web access) can be identified by extracting time based features and using them in a classifier. Such privacy attacks are asymmetric because a limited amount of resources (e.g., machine learning algorithms) can extract information from encrypted traffic generated by cryptographic systems implemented with a significant amount of resources. To mitigate privacy risks, studies in research literature have proposed a number of techniques, but in most cases only a single technique is applied, which can lead to limited effectiveness. This paper proposes a mitigation approach for privacy risks related to the analysis of encrypted traffic which is based on the integration of three main components: (1) A machine learning component which proactively analyzes the encrypted traffic in the network to identify potential privacy threats and evaluate the effectiveness of various mitigation techniques (e.g., obfuscation), (2) a policy based component where policies are used to enforce privacy mitigation solutions in the network and (3) a network node profile component based on the Manufacturer Usage Description (MUD) standard to enable changes in the network nodes in the cases where the first two components are not effective in mitigating the privacy risks. This paper describes the different components and how they interact in a potential deployment scenario. The approach is evaluated on the public dataset ISCXVPN2016 and the results show that the privacy threat can be mitigated significantly by removing completely the identification of specific types of traffic or by decreasing the probability of their identification as in the case of VOIP by 50%, Chat by 40% and Browsing by 33%, thus reducing significantly the privacy risk.</p>
  a2073-899400451nas a2200145   4500000000100000000000100001008004100002100002000043700002000063700002100083700001500104245012400119856005500243490000700298       2022                            d1 aKatarzyna Filus1 aSławomir Nowak1 aJoanna Domańska1 aJakub Duda00aCost-Effective Filtering of Unreliable Proximity Detection Results Based on BLE RSSI and IMU Readings Using Smartphones  uhttps://www.nature.com/articles/s41598-022-06201-y0 v1201877nas a2200169   4500000000100000000000100001008004100002260003800043100002000081700002200101700002200123700002100145245009300166856005000259300001400309520138400323       2023                            d  c07/2023bIEEEaMarrakesh, Morocco1 aSławomir Nowak1 aKrzysztof Grochla1 aMariusz Słabicki1 aMichał Gorawski00aEfficient Universal Indoor Multicharacteristic Propagation model for indoor environments  uhttps://ieeexplore.ieee.org/document/10183073  a1052-10583 a<p>Accurate indoor radio propagation modelling is a well-known problem that researchers tend to solve in many ways. Related methods differ in terms of accuracy and complexity. The article’s contribution is a new stochastic propagation model, Universal Indoor Multicharacteristic Propagation (UIMP), which results are statistically consistent with those measured in a real environment. The model could be used to verify real- world applications due to the low computational complexity and high accuracy level compared to state-of-the-art methods. This method can be especially beneficial for the efficient modelling of complex environments shared by many users using discrete events simulations (DES) based on a series of measurements in a real environment. In the article, we describe the method and present how to establish the model. The motivation was to develop an efficient method for use in an actual application: using the Bluetooth Low Energy (BLE) signal to estimate the position of users in indoor environments – the use of the proposed UIMP model allowed for a reliable assessment of the developed functionalities. Therefore we also present how the model was used to evaluate an example, real functionality, showing that the use of simplified models may falsify the assessment of the analyzed method and may lead e.g. to incorrect implementation assumptions.</p>
01311nas a2200145   4500000000100000000000100001008004100002260000900043100001900052700002000071700001800091245008200109856006500191520090900256       2025                            d  c20251 aMarzena Halama1 aSławomir Nowak1 aKonrad Połys00aSemantic Orientation for Indoor Navigation System using Large Language Models  uhttps://link.springer.com/article/10.1038/s41598-025-25281-03 a<p>Autonomous robots play an important role in modern indoor navigation, but existing systems often struggle with seamless human interaction and semantic understanding of environments. This paper presents an Artificial Intelligence (AI)-driven object recognition system enhanced by Large Language Models (LLMs), such as GPT-4 Vision and Gemini, to bridge this gap. Our approach combines vision-based mapping techniques with natural language processing and interactions to enable intuitive collaboration in solving navigation tasks. By leveraging multimodal input and vector space analysis, our system achieves enhanced object recognition, semantic embedding, and context-aware responses, setting a new standard for autonomous indoor navigation. This approach provides a novel framework for improving spatial understanding and dynamic interaction, making it suitable for complex indoor environments.</p>
00343nas a2200121   4500000000100000008004100001260002500042100001900067700001800086700002000104700002100124245007600145       2026                            d  bAGH University Press1 aMarzena Halama1 aKonrad Połys1 aSławomir Nowak1 aJoanna Domańska00aExternal Semantic Memory as a Cognitive Layer for Large Language Models00303nas a2200109   4500000000100000008004100001260001800042100002000060700001800080700002000098245007500118       2026                            d  aNaples, Italy1 aŁukasz Sobczak1 aNur Kelesoglu1 aSławomir Nowak00aRisk-Aware Semantic Grounding for Trustworthy LLM-Based Robot Planning02040nas a2200121   4500000000100000008004100001100001500042700001900057700001600076700002000092245011200112520169400224       2026                            d1 aMert Nakip1 aRafał Gibała1 aAnna Grygar1 aSławomir Nowak00aTrend-based Multi-Modal Anomaly and Cyber Threat Detection with Traceable Explainability for Cloud Services3 a<p>Multi-modal real-time monitoring systems based on AI are<br>essential for ensuring system reliability and cyber-defense in cloud computing,<br>but are challenged by context isolation, early-fusion computational<br>overhead, and insufficient transparency. In order to address these<br>issues, this paper introduces T-MATE, an explainable Trend-based Multimodal<br>Anomaly and Threat detector engineered for robust, secure cloud<br>infrastructure monitoring. Rather than treating multi-modal streams<br>monolithically, T-MATE structurally decouples data modalities into independent<br>neural network heads, using a specialized Recurrent Trend<br>Predictive Neural Network (rTPNN) to isolate underlying trends and levels<br>across quantitative performance telemetry, while qualitatively parsing<br>textual event logs via Gemini 2.5 Flash. These components output<br>bounded anomaly scores and are integrated at the decision level<br>using an Empirical Reliability-Weighted Max Fusion operator, which<br>scales individual outputs to enforce a max-safety posture and eliminate<br>parameter-explosion liabilities. In order to demonstrate operational deployment<br>readiness, the framework is thoroughly evaluated via 10-fold<br>cross-validation and compared against standalone rTPNN, LSTM, and<br>MLP models alongside the baseline Avg-Fuse paradigm on the public<br>CloudAnoBench dataset. The results reveal that T-MATE achieves a superior<br>overall F1 Score of 0.88, a top threshold-invariant AUC-ROC of<br>0.96, an exceptional True Positive Rate of 0.96, and a processing footprint<br>that confirms its viability for close to real-time inference in enterprise<br>cloud infrastructures.</p>01933nas a2200109   4500000000100000008004100001100001500042700001900057700002000076245009100096520163600187       2026                            d1 aMert Nakip1 aRafał Gibała1 aSławomir Nowak00aOptimizing Information Retrieval in RAG Systems via Proactive Hyperparameter Selection3 a<p>Information retrieval is a crucial operation for Retrieval-<br>Augmented Generation (RAG) systems, providing substantial gains in<br>factual accuracy and operational eciency. However, the performance of<br>a RAG system is highly sensitive to the selection of hyperparameters, optimization of which is computationally expensive and time-consuming. In<br>this paper, we propose a novel framework, called Proactive Hyperparameter<br>Estimation and Selection (ProHES), which introduces a paradigm<br>shift from reactive, brute-force search to an ecient, analytical approach.<br>The core novelty of the ProHES framework is its two-stage methodology.<br>First, it analytically estimates the most suitable similarity metric<br>for a given embedding and dataset by quantifying intrinsic embedding<br>properties, i.e. sparsity, magnitude meaning, feature independence, and<br>value spread. Then, it systematically selects the optimal number of retrieved<br>documents based on user preferences and system requirements.<br>We evaluate the performance of the ProHES framework across six different<br>embedding functions on the MS Marco and TriviaQA datasets.<br>Our results demonstrate that ProHES provides a near-optimal hyperparameter<br>conguration with 22- to 86-fold reduction in computation<br>time compared to exhaustive search, achieving an average of 94% of the<br>best possible performance. The proposed framework represents a significant<br>advancement by making hyperparameter tuning for RAG systems<br>more ecient and systematic, thereby paving the way for more accurate,<br>robust and scalable real-world applications.</p>