Data networking support services of Pushchino Radio Astronomy Observatory, Astro Space Center of Lebedev Physical Institute
Growth of local area network Observatory associated with employee needs to access network resources has led to an increase in the number of computing and network devices. Until recently, we tested performance of these systems excellent manual and most of the problems and faults detected already on the fact the accident occurred. For a small number of network nodes, manual monitoring is not a significant problem, but with increasing the number of nodes troubleshooting becomes a very difficult task for network and system administrators and outage in work of netwok services Observatory may becomes critical. Therefore there was a need to automate the monitoring service network resources and servers.
The 18 full and 13 short papers presented were carefully reviewed and selected from 255 submissions. There were organized in topical sections named: Image Processing, Pattern Analysis and Machine Vision; Information and Data Convergence; Disruptive Technologies for Future; E-Governance and Smart World
The proposed training manual is designed to prepare undergraduate students in "Computer Science" and in "Computers, complexes, systems and networks." The manual is designed to prepare students principles of computer networks and technologies used in local area networks. The principles of the construction of computer networks and telecommunications systems interconnection model systems used for networks, data bases, organization channels of analog and digital communication lines via wired and wireless environments principles transmission control information, coding and data compression technology of modern local organizations networks (Ethernet, Token Ring, FDDI, Fast Ethernet, Gigabit Ethernet, 100VG-AnyLAN), network equipment LANs. The manual can be used by students to prepare for the performance of laboratory and practical work on the course "Computer Networks and Telecommunications", "Networking" and "Administering Network Systems".
This paper discusses the problem of simulation system constructing for the specific domain. Authors suggest the ontological approach using. The simulation system TriadNS is considered. This simulation system is devoted for computer networks design and analysis. Authors represent base ontology and some another ontologies describing the concepts of specific domain.
This book constitutes the proceedings of the 16th IFIP International Conference on Wired/Wireless Internet Communications, WWIC 2018, held in Boston, MA, USA, in June 2018. The 26 regular papers presented in this volume were carefully reviewed and selected from 42 submissions. They were organized in topical sections named: IoT and sensor networks; learning-based networking; network deployment; network security; aerial networks; and vehicular and content delivery networks.
The paper describes basic steps of designing the enterprise computer network. The whole process presented as a sequence of decision making problems in case of multicriteriality. Proposed approach of the computer networks design in case of ambiguity initial information, and taking into account the possible further development of the enterprise’s infrastructure and its business activity. It is proposed to solve this problem by method of payoff matrix is proposed combined with analytic hierarchy process and methods of expert evaluation of alternatives.
A model for organizing cargo transportation between two node stations connected by a railway line which contains a certain number of intermediate stations is considered. The movement of cargo is in one direction. Such a situation may occur, for example, if one of the node stations is located in a region which produce raw material for manufacturing industry located in another region, and there is another node station. The organization of freight traﬃc is performed by means of a number of technologies. These technologies determine the rules for taking on cargo at the initial node station, the rules of interaction between neighboring stations, as well as the rule of distribution of cargo to the ﬁnal node stations. The process of cargo transportation is followed by the set rule of control. For such a model, one must determine possible modes of cargo transportation and describe their properties. This model is described by a ﬁnite-dimensional system of diﬀerential equations with nonlocal linear restrictions. The class of the solution satisfying nonlocal linear restrictions is extremely narrow. It results in the need for the “correct” extension of solutions of a system of diﬀerential equations to a class of quasi-solutions having the distinctive feature of gaps in a countable number of points. It was possible numerically using the Runge–Kutta method of the fourth order to build these quasi-solutions and determine their rate of growth. Let us note that in the technical plan the main complexity consisted in obtaining quasi-solutions satisfying the nonlocal linear restrictions. Furthermore, we investigated the dependence of quasi-solutions and, in particular, sizes of gaps (jumps) of solutions on a number of parameters of the model characterizing a rule of control, technologies for transportation of cargo and intensity of giving of cargo on a node station.
Event logs collected by modern information and technical systems usually contain enough data for automated process models discovery. A variety of algorithms was developed for process models discovery, conformance checking, log to model alignment, comparison of process models, etc., nevertheless a quick analysis of ad-hoc selected parts of a journal still have not get a full-fledged implementation. This paper describes an ROLAP-based method of multidimensional event logs storage for process mining. The result of the analysis of the journal is visualized as directed graph representing the union of all possible event sequences, ranked by their occurrence probability. Our implementation allows the analyst to discover process models for sublogs defined by ad-hoc selection of criteria and value of occurrence probability
Existing approaches suggest that IT strategy should be a reflection of business strategy. However, actually organisations do not often follow business strategy even if it is formally declared. In these conditions, IT strategy can be viewed not as a plan, but as an organisational shared view on the role of information systems. This approach generally reflects only a top-down perspective of IT strategy. So, it can be supplemented by a strategic behaviour pattern (i.e., more or less standard response to a changes that is formed as result of previous experience) to implement bottom-up approach. Two components that can help to establish effective reaction regarding new initiatives in IT are proposed here: model of IT-related decision making, and efficiency measurement metric to estimate maturity of business processes and appropriate IT. Usage of proposed tools is demonstrated in practical cases.
I give the explicit formula for the (set-theoretical) system of Resultants of m+1 homogeneous polynomials in n+1 variables