Сравнение локальных вычислительных сетей по критерию требований к комплектам запасных частей
Due to the overall growth of automation and informatization in all spheres of human activity, systems based on local area networks are becoming more common. Such systems find their use in the fields that place increased demands on the reliability, such as nuclear energy, aviation, chemical manufacturing, etc. To ensure continuity of service, spare part sets (SPT) are being formed in the development phase. SPT cost can reach half the cost of the entire system. In that regard the developer must take SPT costs into account at the stage of selecting the type of organization of computer networks. The paper presents a comparative analysis of the financial costs on the formation of sets of spare parts with different types of service conditions.
This study (research grant No 14-05-0038) was supported by The National Research University–Higher School of Economics’ Academic Fund Program in 2014.
Collection of theses of reports. XXI Scientific and technical conference of young scientists and experts. In 2 Volumes.
In sixteen sections 327 reports on scientific research, design and methodical developments, experimental works and also works on creation and introduction have been presented to improvement of methods of management and the organization of developments to production of progressive technological processes, materials. About a half of the submitted reports are prepared by the staff of RCC Energia.
System ASONIKA-K-MF is a VJ-visual environment reliability electron modules designed to automate the activities and management of the reliability of electronic equipment on the stages of projection-tirovaniya, manufacture, operation and scraps-tion . The system is designed as a client-server application that allows Playback izvodimost calculations and ease of operation.  Despite the fact that the software, similar to the system ASONIKA-K-MF, has not yet been created either in Russia or abroad, constant updating of operating systems has led to the fact that the client part of the system ASONIKA-K-MF-mouth RELA in the sense that was not compatible with modern operating systems Windows Vista / 7/8. Therefore, there was a task processing times, the new version of the client side (interak-tive interface) system ASONIKA-K-MF under the operating systems Windows Vista / 7/8, using modern methods and programming tools.
The need for a variety of converters appears in the condition of the need to reduce the time of calculation of reliability of simple products, such as printed circuit assemblies. One source of data for calculating the reliability of the programs may be operating modes ESI map. According generated maps based on templates from WFD 319.01.09 might receive automated information on ESI applied as part of the test site that will speed up the process of assessing nadezhnostnogo performance of electronic equipment.
We consider the topology of the distributed electronic surveillance system (PCH), the minimum configuration and structure tour its constituent units. Criteria RSN distributed performance. On the basis of structures of equipment places-foot control tower and radio engineering unattended terminal built RSN scheme reliability. The results of the peer review of operational failure rate of hardware components of the local control station and unattended radio terminals. The simulation and calculation of the reliability program ASONIKA-K-SI.
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.
Generalized error-locating codes are discussed. An algorithm for calculation of the upper bound of the probability of erroneous decoding for known code parameters and the input error probability is given. Based on this algorithm, an algorithm for selection of the code parameters for a specified design and input and output error probabilities is constructed. The lower bound of the probability of erroneous decoding is given. Examples of the dependence of the probability of erroneous decoding on the input error probability are given and the behavior of the obtained curves is explained.
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
The Handbook of CO₂ in Power Systems' objective is to include the state-of-the-art developments that occurred in power systems taking CO₂ emission into account. The book includes power systems operation modeling with CO₂ emissions considerations, CO₂ market mechanism modeling, CO₂ regulation policy modeling, carbon price forecasting, and carbon capture modeling. For each of the subjects, at least one article authored by a world specialist on the specific domain is included.
I give the explicit formula for the (set-theoretical) system of Resultants of m+1 homogeneous polynomials in n+1 variables