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Tytuł:
Network monitoring and management for company with hybrid and distributed infrastructure
Autorzy:
Doliwa, D.
Frydrych, M.
Horzelski, W.
Powiązania:
https://bibliotekanauki.pl/articles/94809.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
network monitoring
network management
Nagios
SNMP
Opis:
The article presents the concept and the description of implementation of the system designed for monitoring and management of a computer network for the large company with a hybrid and distributed infrastructure. The system is based on a Nagios software, a software Multi Router Traffic Grapher, NdoUtils, a relational database management system MySQL, the visualization systems for Nagios (NagVis, NagMap) and a dedicated application that was created for the system, which allows on the presentation of monitored resources.
Źródło:
Information Systems in Management; 2016, 5, 3; 326-335
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-organization and Routing Algorithms for the Purpose of the Sensor Network Monitoring Environmental Conditions on a Given Area
Autorzy:
Bronk, K.
Lipka, A.
Wereszko, B.
Żurek, J.
Żurek, K.
Powiązania:
https://bibliotekanauki.pl/articles/307916.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
network management
network self-organization
sensor networks
Opis:
The article describes an implementation of wireless sensor network (WSN) based on the IEEE 802.15.4-2006 standard, which was designed to monitor environmental conditions (e.g. temperature, humidity, light intensity, etc.) on a given area. To carry out this task, a self-organization algorithm called KNeighbors was selected. It exhibits low computational complexity and is satisfactory with respect to energy consumption. Additionally, the authors proposed a novel routing algorithm and some modifications to the MAC layer of the IEEE 802.15.4 standard. The article discusses the selected algorithms and procedures that were implemented in the network.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 4; 39-52
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic tactical network node configuration with XML and SNMP
Autorzy:
Małowidzki, M.
Bereziński, P.
Powiązania:
https://bibliotekanauki.pl/articles/308089.pdf
Data publikacji:
2008
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
network management
network configuration
tactical network
SNMP
NETCONF
Opis:
In the paper, we describe a "plug-and-play" configuration of nodes of a tactical network on the basis of XML configuration templates and a network plan, developed during the network planning process. We present the concept of a configuration repository, an XML-based database that stores network structure and configuration data, and describe how the Simple Network Management Protocol is used to apply the settings to network devices. We also comment on a possible use of the next-generation NETCONF protocol for such a task.
Źródło:
Journal of Telecommunications and Information Technology; 2008, 2; 84-87
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimized Energy Aware Resource Allocation Algorithm Using Software Defined Network Technology
Autorzy:
Al-Musawi, Ranya
Al-Khatib, Obada
Powiązania:
https://bibliotekanauki.pl/articles/309122.pdf
Data publikacji:
2019
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
computer network management
network servers
software defined networking
virtual machines
Opis:
The number of data centers (DCs) used for storing and processing data has evolved rapidly in recent years. However, the operations held by DCs may relate to a number of disadvantages, primarily presuming in excessive energy and power consumption due to the poor management standards applied. This may lead to a situation in which many devices within the DC operate at full capacity without any tasks assigned for actual execution. A Software Defined Network (SDN) is a network architecture where the control plane is an independent entity from the data plane, yielding to a higher controllability and flexibility over the network. Through the utilization of SDN architecture, a highly functional energy aware network may be established. In this paper, we propose a heuristic algorithm that monitors the current status of an SDN network (in addition to all ingoing and outgoing traffic), in order to dynamically and efficiently allocate network resources by ensuring that only the necessary network devices are active and by turning the idle ones off. The results show that the proposed algorithm reduces energy consumption of the network compared to existing solutions.
Źródło:
Journal of Telecommunications and Information Technology; 2019, 2; 83-91
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Comparison Study of DASH Technique by Video Streaming over IP with the Use of RTP and HTTP Protocols
Autorzy:
Hoppe, Christian
Uhl, Tadeus
Powiązania:
https://bibliotekanauki.pl/articles/309066.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
H.265
IP network technology
MPEG-DASH
network management
QoS measurement
video streaming
Opis:
Today’s Internet knows no bounds. New applications are marketed every single day. Many of them incorporate video sequences. These must be transported over the Internet quickly (often in real time). However, the Internet has not been designed for live communications and, regrettably, this may become apparent all too quickly. Countermeasures are required in the form of new, efficient transport techniques facilitating online video services. MPEG-DASH is one of such modern techniques. But how good is this new technique really? This paper delves into the matter. The paper contains an analysis of the impact that the new technology exerts on the quality of video streaming over IP networks. It also describes a new numerical tool – QoSCalc (DASH-HTTP) which has been used to analyze MPEG-DASH under different use scenarios. The results are presented graphically and their interpretation is provided
Źródło:
Journal of Telecommunications and Information Technology; 2020, 1; 70-75
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The DSO Network Development with the Increase of Distributed Energy Resources Number and Their Capacity
Autorzy:
Mataczyńska, Ewa
Sikora, Marek
Powiązania:
https://bibliotekanauki.pl/articles/31342807.pdf
Data publikacji:
2022
Wydawca:
Instytut Polityki Energetycznej im. Ignacego Łukasiewicza
Tematy:
Distribution System Operators DSO
network management
flexibility
local balancing
flow-circle concept
Opis:
Energy transition is a continuous process, involving all elements of the energy sector. For Distribution System Operators the ability to cope with new challenges resulting from the energy transition (i.a. digitalisation, EV, PV, energy storage, distributed energy, energy communities, microgrids, energy sharing, geopolitical changes) is one of the most significant elements of this process. To meet the challenges of the transformation, it is necessary to develop new solutions adapted to the needs of all market participants, redefine priorities, establish new rules of cooperation in order to ensure security and stability of the power system at economically justified costs. The article describes network flexibility as a tool allowing DSOs meet needs of energy sector transformation process based on flow-circle concept. The idea of it is to use continuous observation tools (captured in the observability of the network), making predictions over different time horizons, across different areas, with varying observation granularity. The result of the calculations allows to identify constraints in the system, e.g., overloads, risk of failure or shortage of power or energy, and to select countermeasures commensurate with the threat and available at the selected time horizon.
Źródło:
Energy Policy Studies; 2022, 2 (10); 27-40
2545-0859
Pojawia się w:
Energy Policy Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impact of Special Economic Zones on the Level of Socio-economic Changes of Polish Regions
Autorzy:
Jarosiński, Krzysztof
Maśloch, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/942334.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Handlowa w Warszawie
Tematy:
development on local and regional levelinvestments
network management
Special Economic Zones (SEZ)
Opis:
Transition process in Poland involved the use of various tools to stimulate and increase the socioeconomic development in new conditions of a market economy. A very important direction was implementation of network solutions in the form of Special Economic Zones (SEZs). The networking nature of the solution was to create a common framework for action: economic, legal and organizational, which would apply to companies already existing in the Zones, but would also set the standard for new SEZs and their actors. The idea of creating special zones offering new attractive and unique conditions for business was new a new phenomenon in Poland. Usually operations in SEZs involve preferential conditions, which should lead to improvement of financial performance of such companies. The paper aims to determine the impact of SEZs on socio-economic development of Polish regions, using regions under endogenous development and supported by the European Union (EU) as frames of reference. The paper also aims to determine the impact of SEZs on scope of new investments, especially, FDI and unemployment.
Źródło:
Warsaw Forum of Economic Sociology; 2016, 7, 14; 115-137
2081-9633
Pojawia się w:
Warsaw Forum of Economic Sociology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A concept of Differentiated Services architecture supporting military oriented Quality of Service
Autorzy:
Kwiatkowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/307725.pdf
Data publikacji:
2003
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
quality of service
military networks
differentiated services
bandwidth brokerage
policy based network management
Opis:
This paper presents a concept of IP Differentiated Services (DiffServ) architecture in conjunction with bandwidth brokerage and policy based network management, all aimed at efficient and flexible provision of the military oriented Quality of Service (M-QoS) features in the Australian Defence (strategic) wide area network and its satellite trunk interconnections with the tactical domain. Typical DiffServ functions are analysed in the paper with regard to their roles in offering M-QoS. Some preliminary simulation results of applying these mechanisms to achieve traffic policing and differentiation for (UDP) video traffic streams, are also presented. Finally, the paper proposes the use of bandwidth brokerage in each DiffiServ domain to facilitate automatic Service Level Specification (SLS) arrangements with end-user applications, and policy based network management to support the flexible implementation of bandwidth brokerage.
Źródło:
Journal of Telecommunications and Information Technology; 2003, 2; 71-76
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Labeling of signals in optical networks and its applications
Autorzy:
Borzycki, K.
Powiązania:
https://bibliotekanauki.pl/articles/308136.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
optical fiber transmission
transparent optical network
pilot tone
network management
overhead data channel
optical fiber dispersion
optical label
Opis:
The paper is a review and comparative analysis of most common techniques proposed to attach additional data or identification information to digital signals in optical fiber networks by purely optical means. Such "labels" or "headers" can be attached either to continuous bit streams, e.g., in SDH networks or to optical packets. They enable to monitor, route and identify signals in transparent optical networks, especially those with optical wavelength multiplexing, allow management and supervision of remote optical amplifiers and can be used in optical switching systems. Other applications of this relatively unknown technology include monitoring of optical path dispersion, equalization of channels in DWDM systems and detection of intrusion or jamming in highly secure networks.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 2; 73-88
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conceptual foundations of governance – a critical review
Podstawy konceptualne współzarządzania. Analiza krytyczna
Autorzy:
Zawicki, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/904064.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Ekonomiczny w Krakowie, Małopolska Szkoła Administracji Publicznej
Tematy:
public governance
mechanisms of governance
network management
governance deficits
współzarządzanie publiczne
mechanizmy współzarządzania
zarządzanie sieciowe
deficyty współzarządzania
Opis:
This article presents the sources, nature and areas of criticism of governance. We will critically reflect on both its theoretical-normative and its pragmatic dimension. The conclusions we will arrive at will serve to highlight the main issues around which the study of the deficits of governance is focused. Finally, we will see four hypothetical scenarios for the evolution of the public governance paradigm emerge on the basis of the critical ref lection and the resulting conclusions.
W artykule przedstawiono źródła, naturę i obszary krytyki współzarządzania publicznego. Uwagi wysuwane pod adresem tego paradygmatu zarządzania publicznego zostały omówione w podziale na krytykę jego teoretyczno- normatywnego oraz pragmatycznego wymiaru. Wnioski wynikające z przeprowadzonych analiz posłużyły do wyróżnienia głównych problemów, wokół których koncentruje się dyskusja o deficytach współzarządzania publicznego. W końcowej części artykułu nakreślono cztery hipotetyczne scenariusze ewolucji paradygmatu współzarządzania publicznego, skonstruowane na podstawie przeprowadzonych rozważań oraz konkluzji z nich wynikających.
Źródło:
Zarządzanie Publiczne / Public Governance; 2015, 2(32); 15-24
1898-3529
2658-1116
Pojawia się w:
Zarządzanie Publiczne / Public Governance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ranking of LTE cells based on key performance indicators using MCDM methods
Autorzy:
Lopes Neto, Pedro Nunes
Freire Junior, José Celso
Tuna, Celso Eduardo
Powiązania:
https://bibliotekanauki.pl/articles/2211970.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
long-term evolution
multiple criteria methods
radio access network performance management
self-organizing networks
Opis:
The growth in worldwide data traffic and user subscriptions in mobile telecommunication networks makes it increasingly difficult to manage network performance in an environment already containing multiple radio access technologies. Despite the rise of 5G, LTE remains the dominant technology, and new cells are installed daily to support traffic growth and new services such as voice over LTE. Detecting faulty cells in the network is one of the main concerns of operators. Self organizing networks have been introduced to deal with this problem, and their self healing functionality has improved cell fault management. Nonetheless, faulty cell detection remains challenging, and most of the tasks involved are still done manually. This paper introduces a new method of faulty cell detection in an LTE radio access network, applying multiple criteria methods to this problem. The cells are ranked based on selected key performance indicators, using the multi attribute utility theory to construct a utility function. The analytic hierarchy process is used to define weights for the criteria.
Źródło:
Multiple Criteria Decision Making; 2022, 17; 46-68
2084-1531
Pojawia się w:
Multiple Criteria Decision Making
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air Traffic Crisis Management in European Airspace : the Legal Context and the Experience of the Network Manager
Autorzy:
Markiewicz, Telesfor Marek
Powiązania:
https://bibliotekanauki.pl/articles/93352.pdf
Data publikacji:
2019
Wydawca:
Akademia Sztuki Wojennej
Tematy:
air traffic disruption
air traffic crisis situations
European air traffic management network
network functions
network manager
air navigation service providers
ruch lotniczy
transport lotniczy
zarządzanie kryzysowe
Europa
Opis:
The article looks at the genesis and evolution of Network Manager (NM) activities in terms of responding to disturbances and crisis situations and mitigating their effects on the European air traffic management network. The objective of these activities, carried out in coordination with the operational stakeholders and other relevant stakeholders, is to ensure the maximum continuity and safety of air navigation services for aircraft operators and airports. The review, analysis and evaluation of how to respond to extraordinary and unforeseen events that have a negative impact on the functioning of the air transport sector in Europe covers the period 2010-2019.
Źródło:
Zeszyty Naukowe Akademii Sztuki Wojennej; 2019, 3(116); 5-28
2543-6937
Pojawia się w:
Zeszyty Naukowe Akademii Sztuki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of water and wastewater infrastructure in communes of Kujawsko-Pomorskie voivodeship
Autorzy:
Kubiak-Wójcicka, K.
Piątkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/101345.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
water supply network
sewerage network
water management expenditures
sewerage management expenditures
Opis:
The paper assesses the development level of water and sewerage infrastructure in the Kujawsko-Pomorskie voivodeship in the period of 1999-2014. The analysis included the infrastructure in 144 communes. The outcome has ascertained large irregularity in water and sewerage network coverage saturation in particular years, especially in southern and eastern parts of the voivodeship. The growth dynamics of the sewerage network surpasses the water network growth in the analyzed period but still does not reach the development degree of the water system. The Kujawsko-Pomorskie voivodeship has the second densest water network in Poland. However, taking into account sewerage network density, it is ninth. Disproportion in both networks development degree is mitigated by building household sewage treatment plants, especially in the communes with lower population density, in which building sewerage network is too expensive. In 2014 two communes had no sewerage network at all and two others had that network very sparse (over 100 km of water network per 1 km of sewerage network). The most intense water and sewerage infrastructure development was recorded in 2007 and 2014, mainly in rural and urban-rural areas. It is related to increased expenditure on water and sewerage infrastructure within the Regional Operational Programme in the years 2004-2006 and 2007-2013.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/1; 907-922
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Functioning of the logistics system on the example of the selected sales network
Autorzy:
Nowakowska, Anita
Powiązania:
https://bibliotekanauki.pl/articles/1063036.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
logistics management
logistics system
network
sales network
Opis:
In business operations of enterprises operating a sales network, particular importance is given to appropriately planned and properly implemented activities that enable the flow of goods as well as the accompanying information. This flow can be ensured only by the logistic system designed in the right way. Each company selling products using sales network has its own individual logistics system. The proper functioning of this system allows the company to fulfill all the tasks and goals that are set before logistics. The article illustrates the functioning of the logistics system in the sales network, and also presents the organization of logistic processes on the example of the chosen network.
Źródło:
World Scientific News; 2019, 124, 2; 239-251
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Managing distribution processes in the selected sales Network
Autorzy:
Nowakowska, Anita
Powiązania:
https://bibliotekanauki.pl/articles/1070886.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
distribution
distribution logistics
logistics management
network
sales network
Opis:
Distribution logistics plays an important role in the proper functioning of the company. It is particularly important in manufacturing companies that sell their products in their showrooms. Many of these types of companies see the opportunity to improve the efficiency of their operations in properly organized activities in the field of distribution logistics. However, this requires proper management of distribution processes. A choice should be made between direct and indirect distribution, in the case of the latter, also specify the number of intermediary links and select the sales agents accordingly. With this in mind, the considerations taken up in the article were devoted to the problems of managing distribution processes in the sales network on the example of a selected enterprise.
Źródło:
World Scientific News; 2019, 123; 234-245
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 99

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