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Tytuł:
A Novel Software-Defined Networking Controller : the Distributed Active Information Model (DAIM)
Autorzy:
Pupatwibul, P.
Banjar, A.
Hossain, M. I.
Braun, R.
Moulton, B.
Powiązania:
https://bibliotekanauki.pl/articles/226996.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
distributed network
OpenFlow
DAIM model
software defined networking
next generation networks
Opis:
This paper presents a new OpenFlow controller: the Distributed Active Information Model (DAIM). The DAIM controller was developed to explore the viability of a logically distributed control plane. It is implemented in a distributed way throughout a software-defined network, at the level of the switches. The method enables local process flows, by way of local packet switching, to be controlled by the distributed DAIM controller (as opposed to a centralised OpenFlow controller). The DAIM ecosystem is discussed with some sample code, together with flowcharts of the implemented algorithms. We present implementation details, a testing methodology, and an experimental evaluation. A performance analysis was conducted using the Cbench open benchmarking tool. Comparisons were drawn with respect to throughput and latency. It is concluded that the DAIM controller can handle a high throughput, while keeping the latency relatively low. We believe the results to date are potentially very interesting, especially in light of the fact that a key feature of the DAIM controller is that it is designed to enable the future development of autonomous local flow process and management strategies.
Źródło:
International Journal of Electronics and Telecommunications; 2018, 64, 2; 209-216
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization Model of Adaptive Decision Taking Support System for Distributed Systems Cyber Security Facilities Placement
Autorzy:
Kalizhanova, Aliya
Akhmetov, Sultan
Lakhno, Valery
Wojcik, Waldemar
Nabiyeva, Gulnaz
Powiązania:
https://bibliotekanauki.pl/articles/226504.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
distributed computational network
cyber security
optimization
protection facilities placement
decision-making support system
Opis:
An article herein presents an optimization model, designated for computational core of decision-taking support system (DTSS). DTSS is necessary for system analysis and search of optimal versions for cyber security facilities placement and information protection of an enterprise or organization distributed computational network (DCN). DTSS and a model allow automize the analysis of information protection and cyber security systems in different versions. It is possible to consider, how separate elements, influence at DCN protection factors and their combinations. Offered model, in distinction from existing, has allowed implementing both the principles of information protection equivalency to a concrete threat and a system complex approach to forming a highly effective protection system for DCN. Hereby we have presented the outcomes of computational experiments on selecting the rational program algorithm of implementing the developed optimization model. It has been offered to use genetic algorithm modification (GAM). Based on the offered model, there has been implemented the module for adaptive DTSS. DTSS module might be applied upon designing protected DCN, based on preset architecture and available sets of information protection and cyber security systems in the network.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 3; 493-498
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Software implementation of exchange processes in a distributed network environment of transmission and processing of information
Autorzy:
Yusupbekov, Nadirbek
Gulyamov, Shukhrat
Kasymov, Sadikdjan
Usmanova, Nargiza
Mirzaev, Dilshod
Powiązania:
https://bibliotekanauki.pl/articles/384930.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
information exchange process
data transfer
processing
distributed network environment
decision support
proces wymiany informacji
transfer danych
przetwarzanie
środowisko sieciowe
wsparcie decyzyjne
Opis:
The work is devoted to the development of scientific and methodological basis for increasing the functioning efficiency of distributed computer networks and systems through the organization of an info communication network environment for the transmission and processing of information on the basis of implementation of models and mechanisms of associative interaction in a computing environment.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2018, 12, 4; 64-69
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of an Information Security System Based on Modeling Distributed Computer Network Vulnerability Indicators of an Informatization Object
Autorzy:
Lakhno, Valerii
Alimseitova, Zhuldyz
Kalaman, Yerbolat
Kryvoruchko, Olena
Desiatko, Alona
Kaminskyi, Serhii
Powiązania:
https://bibliotekanauki.pl/articles/27311974.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
information security
informatization object
distributed computing network
mathematical model
vulnerability coefficient
virtualization
IDS
SIEM
Opis:
A methodology for development for distributed computer network (DCN) information security system (IS) for an informatization object (OBI) was proposed. It was proposed to use mathematical modeling at the first stage of the methodology. In particular, a mathematical model was presented based on the use of the apparatus of probability theory to calculate the vulnerability coefficient. This coefficient allows one to assess the level of information security of the OBI network. Criteria for assessing the acceptable and critical level of risks for information security were proposed as well. At the second stage of the methodology development of the IS DCN system, methods of simulation and virtualization of the components of the IS DCN were used. In the course of experimental studies, a model of a protected DCN has been built. In the experimental model, network devices and DCN IS components were emulated on virtual machines (VMs). The DCN resources were reproduced using the Proxmox VE virtualization system. IPS Suricata was deployed on RCS hosts running PVE. Splunk was used as SIEM. It has been shown that the proposed methodology for the formation of the IS system for DCN and the model of the vulnerability coefficient makes it possible to obtain a quantitative assessment of the levels of vulnerability of DCN OBI.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 3; 475--483
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Secure data storage and service automation for cyber physical production systems through distributed ledger technologies
Autorzy:
Lemme, Gordon
Nölscher, Kilian Armin
Bei, Erhao
Hermeling, Christian
Ihlenfeldt, Steffen
Powiązania:
https://bibliotekanauki.pl/articles/1428656.pdf
Data publikacji:
2021
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
distributed ledger
smart contract
value network
Opis:
In this paper, we use the blockchain technology to design a prototype to secure process data from a 3D-printer. Datastreams are gathered from various sources such as OPC UA servers and autonomous retrofit sensor nodes. This is followed by pre-processing for data reduction, storage in a data model, and the generation of a unique hash value over it. The hash values are stored in a blockchain using appropriate consensus methods, taking into account their temporal origin and production identification number. This also includes the context-related influence of sensor signals on the production process Restrictive access regulations using smart contracts make a partially or fully automated machine tool calibration possible. In this context, we show to realize a process partial or full automation through smart contracts. Physical machine tools and virtual simulations are integrated into the block-chain network to document the stability and performance.
Źródło:
Journal of Machine Engineering; 2021, 21, 1; 89-97
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technologia zmiennych sieciowych w rozproszonych systemach pomiarowo-kontrolnych
Network Variables technology in distributed control measurement systems
Autorzy:
Szulim, R.
Powiązania:
https://bibliotekanauki.pl/articles/153039.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
zmienne sieciowe
systemy rozproszone
network variables
distributed systems
Opis:
W artykule zaprezentowane zostaną możliwości technologii zmiennych sieciowych firmy National Instruments. Technologia zmiennych sieciowych może znaleźć zastosowanie podczas budowy rozproszonych systemów pomiarowo-kontrolnych przy użyciu pakietu Lab Windows lub Lab View. Jako przykład praktyczny zastosowania technologii przedstawiony będzie rozproszony system informowania o nieprawidłowościach pracy urządzeń typu wzorce częstotliwości i czasu w Głównym Urzędzie Miar w Warszawie.
In the paper possibilities of the new network variable technology used for building application of the National Instruments Lab Windows are presented. The writing distributed application with network data exchange using TCPIP protocol (Fig. 1) is frequently difficult [1]. It is often necessary to write programs using multiprocessing or multithreading techniques, which might be a difficult task because it also involves problems like critical sections and deadlocks [4]. The network variable technology introduced by the National Instruments is a new technology which simplifies building distributed application using Lab Windows or Lab View tools. A network variable can be compared with the classic global program variable but shared between many applications across the network. The application must declare variables divided into processes (Fig. 2) and attach to a given variable (or variables) in order to write and read their values - Fig. 3. A practical exemplary use of this technology as a distributed supervision system to inform about problems with the functioning of devices such as the time and frequency standard generator in the Central Office of Measures in Warsaw is presented [5]. The application consists of many program modules supervising certain devices - Figs. 4 and 5. A number of network variables is used to send alert information by means of SMS to the list of declared users - Fig. 6. The Network Variable technology can be perceived as an interesting alternative to other technologies but can be used only with National Instruments applications.
Źródło:
Pomiary Automatyka Kontrola; 2010, R. 56, nr 11, 11; 1318-1320
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on islanding detection of solar distributed generation based on best wavelet packet and neural network
Autorzy:
Xi, Zhongmei
Zhao, Faqi
Zhao, Xiangyang
Peng, Hong
Xi, Chuanxin
Powiązania:
https://bibliotekanauki.pl/articles/141157.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
active distribution network
islanding detection
neural network
solar distributed generation
wavelet pocket transform
Opis:
The active distribution network (ADN) represents the future development of distribution networks, whether the islanding phenomenon occurs or not determines the control strategy adopted by the ADN. The best wavelet packet has a better time-frequency characteristic than traditional wavelet analysis in the different signal processing, because it can extract better and more information from the signal effectively. Based on wavelet packet energy and the neural network, the islanding phenomenon of the ADN can be detected. Firstly, the wavelet packet is used to decompose current and voltage signals of the public coupling point between the distributed photovoltaic (PV) system and power grid, and calculate the energy value of each decomposed frequency band. Secondly, the network is trained using the constructed energy characteristic matrix as a neural network learning sample. At last, in order to achieve the function of identification for islanding detection, lots of samples are trained in the neural network. Based on the actual circumstance of PV operation in the ADN, the MATLAB/SIMULINK simulation model of the ADN is established. After the simulation, there are good output results, which show that the method has the characteristics of high identification accuracy and strong generalization ability.
Źródło:
Archives of Electrical Engineering; 2019, 68, 4; 703-717
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parallel and Distributed Simulation of Ad Hoc Networks
Autorzy:
Sikora, A.
Niewiadomska-Szynkiewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/309034.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
ad hoc networks
distributed simulation
mobile network
software systems
Opis:
Modeling and simulation are traditional methods used to evaluate wireless network design. This paper addresses issues associated with the application of parallel discrete event simulation to mobile ad hoc networks design and analysis. The basic characteristics and major issues pertaining to ad hoc networks modeling and simulation are introduced. The focus is on wireless transmission and mobility models. Particular attention is paid to the MobASim system, a Javabased software environment for parallel and distributed simulation of mobile ad hoc networks. We describe the design, performance and possible applications of presented simulation software.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 3; 76-84
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Resource placement in the 4-dimensional cube-type processor networks with soft degradation
Autorzy:
Kulesza, R.
Chudzikiewicz, J.
Zieliński, Z.
Powiązania:
https://bibliotekanauki.pl/articles/205700.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
informatics
resource placement
soft degradation
hypercube network
distributed database
Opis:
The paper considers some properties of selected types of perfect resource placements in 4-dimensional cube-type networks with soft degradation. The conditions of existence of perfect placements and the ways of determining resource placement are presented. Examples of different types of placements are given. On the basis of the established forms of the network working structures along with network degradation the average number of working processors with specified order is determined. This value could be a measure of the network’s computing capabilities loss along with the increasing degree of network degradation for a given type of resource placement.
Źródło:
Control and Cybernetics; 2017, 46, 1; 87-103
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bayesian Network Based Fault Tolerance in Distributed Sensor Networks
Autorzy:
Lokesh, B. B.
Nalini, N.
Powiązania:
https://bibliotekanauki.pl/articles/308287.pdf
Data publikacji:
2014
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Bayesian network
distributed sensor networks
fault detection
fault tolerance
fault recovery
network control
routing
Opis:
A Distributed Sensor Network (DSN) consists of a set of sensors that are interconnected by a communication network. DSN is capable of acquiring and processing signals, communicating, and performing simple computational tasks. Such sensors can detect and collect data concerning any sign of node failure, earthquakes, floods and even a terrorist attack. Energy efficiency and fault-tolerance network control are the most important issues in the development of DSNs. In this work, two methods of fault tolerance are proposed: fault detection and recovery to achieve fault tolerance using Bayesian Networks (BNs). Bayesian Network is used to aid reasoning and decision making under uncertainty. The main objective of this work is to provide fault tolerance mechanism which is energy efficient and responsive to network using BNs. It is also used to detect energy depletion of node, link failure between nodes, and packet error in DSN. The proposed model is used to detect faults at node, sink and network level faults (link failure and packet error). The proposed fault recovery model is used to achieve fault tolerance by adjusting the network of the randomly deployed sensor nodes based on of its probabilities. Finally, the performance parameters for the proposed scheme are evaluated.
Źródło:
Journal of Telecommunications and Information Technology; 2014, 4; 44-52
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cluster Based Optimization of Routing in Distributed Sensor Networks Using Bayesian Networks with Tabu Search
Autorzy:
Bhajantri, L. B.
Nalini, N.
Powiązania:
https://bibliotekanauki.pl/articles/226310.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Distributed Sensor Networks
routing
cluster head
Bayesian Network
tabu search
Opis:
Distributed Sensor Networks (DSNs) have attracted significant attention over the past few years. A growing list of many applications can employ DSNs for increased effectiveness especially in hostile and remote are as. In all application salargen umber of sensors are expected and requiring careful architecture and management of the net work. Grouping nodes in toclusters has been the most popular approach for support scalability in DSN. This paper proposes acluster based optimization of routing in DSN by employing a Bayesi an network (BN) with Tabu search (TS) approach. BN based approach is used to select efficient cluster head sand construction of BN for the proposed scheme. This approach in corporates energy level of each node, band width and link efficiency. The optimization of routing is considered as a design issue in DSN due to lack of energy consumption, delay and maximum time required for data transmission between source nodes (cluster heads) to sink node. In this work optimization of routing takes place through cluster head nodes by using TS. Simulations have been conducted to compare the performance of the proposed approach with LEACH protocol. The objective of the proposed work is to improve the performance of network in terms of energy consumption, through put, packet delivery ratio, and time efficiency of optimization of routing. The results hows that the proposed approach perform better than LEACH protocol that utilizes minimum energy, latency for cluster formation and reduce over head of the protocol.
Źródło:
International Journal of Electronics and Telecommunications; 2014, 60, 2; 199-208
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology of Using Ancillary Services Provided by Distributed Generation for Planning and Development of MV Network Processes
Metodyka wykorzystania usług regulacyjnych świadczonych przez generację rozproszoną przy planowaniu rozwoju sieci SN
Autorzy:
Korpikiewicz, J. G.
Bronk, L.
Pakulski, T.
Powiązania:
https://bibliotekanauki.pl/articles/397667.pdf
Data publikacji:
2014
Wydawca:
ENERGA
Tematy:
ancillary services
distributed generation
MV network
usługa regulacyjna
generacja rozproszona
SN
Opis:
The paper presents a procedure for identyfying the potential of ancillary services provided by distributed generation for DSO needs, including technical and economic aspects. Services are an alternative to the traditional network modernization, carried out in order to enhance grid reliability by eliminating identified threats. Technical capabilities using ancillary services provided by generation resources in an MV grid and pricing principles were proposed in this paper.
Autorzy artykułu prezentują procedurę identyfikacji potencjalnych możliwości wykorzystania usług regulacyjnych, świadczonych przez konwencjonalne oraz odnawialne źródła wytwórcze przy planowaniu rozwoju sieci SN, przez operatorów systemu dystrybucyjnego (OSD). Przedstawiono sposób traktowania usług regulacyjnych jako alternatywę dla realizacji tradycyjnej modernizacji sieci dystrybucyjnej. Określono składniki kosztów oraz możliwości techniczne świadczenia usług regulacyjnych przez źródła przyłączone do sieci SN.
Źródło:
Acta Energetica; 2014, 2; 61-65
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bayesian approach to parameter identification in gas networks
Autorzy:
Hajian, Soheil
Hintermüller, Michael
Schillings, Claudia
Strogies, Nikolai
Powiązania:
https://bibliotekanauki.pl/articles/1839142.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
Bayesian inversion
distributed friction coefficient
gas network/pipeline
hyperbolic PDE system
Opis:
The inverse problem of identifying the friction coefficient in an isothermal semilinear Euler system is considered. Adopting a Bayesian approach, the goal is to identify the distribution of the quantity of interest based on a finite number of noisy measurements of the pressure at the boundaries of the domain. First wellposedness of the underlying non-linear PDE system is shown using semigroup theory, and then Lipschitz continuity of the solution operator with respect to the friction coefficient is established. Based on the Lipschitz property, well-posedness of the resulting Bayesian inverse problem for the identification of the friction coefficient is inferred. Numerical tests for scalar and distributed parameters are performed to validate the theoretical results.
Źródło:
Control and Cybernetics; 2019, 48, 2; 377-402
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-Organizing Wireless Ad-Hock Sensor Networks
Autorzy:
Ruciński, D.
Kłopotek, M.
Tchórzewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/92832.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
smart dust
self-organizing network
distributed artificial intelligence
tiny operating system
Opis:
The main target of this article is to review the main items connected with Smart Dust and their resolving proposals by research workers. In chapter 1 contains hardware description, chapter 2 contains software description divided Into positioning problems, routing, description of TinyOS, tools used for building working environment and security, chapter 3 contains conclusions and proposals for future development.
Źródło:
Studia Informatica : systems and information technology; 2005, 1(5); 69-80
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystania usług regulacyjnych świadczonych przez generację rozproszoną przy planowaniu rozwoju sieci SN
Methodology of using ancillary services provided by distributed generation for planning and development MV network processes
Autorzy:
Korpikiewicz, J.
Bronk, L.
Pakulski, T.
Powiązania:
https://bibliotekanauki.pl/articles/267530.pdf
Data publikacji:
2013
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
usługa regulacyjna
generacja rozproszona
SN
ancillary services
distributed generation
MV network
Opis:
Referat prezentuje procedurę identyfikacji potencjalnych możliwości wykorzystania usług regulacyjnych, świadczonych przez konwencjonalne oraz odnawialne źródła wytwórcze przy planowaniu rozwoju sieci SN przez OSD. Przedstawiono sposób traktowania usług regulacyjnych jako alternatywę dla realizacji tradycyjnej modernizacji sieci dystrybucyjnej. Określono składniki kosztów oraz możliwości techniczne świadczenia usług regulacyjnych przez źródła przyłączone do sieci SN.
The paper presents a procedure for the identification potential of ancillary services provided by distributed generation for DSO needs, including technical and economic aspects. Services are an alternative to the traditional network modernization, carried out in order to enhance grid reliability by eliminating identified threats. Technical capabilities using ancillary services provided by generation resources in MV grid and pricing principles was proposed in this paper.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2013, 33; 19-22
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 35

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