Методы и средства информационно-аналитической оценки астероидно-кометной опасности
The article contains a description of the methods and software tools for the creation of information-analytical system of monitoring of hazardous space objects. The article presents the structure of the system and a description of the functional components to enable rapid assessment of the NEO hazard and forecast the effects of dangerous collision of celestial bodies with the Earth. There are also the results of the system in terms of modeling the motion of cosmic objects.
This volume presents new results in the study and optimization of information transmission models in telecommunication networks using different approaches, mainly based on theiries of queueing systems and queueing networks .
The chapter explores the semantics and pragmatics of the Russian temporal syntactic phraseme ‘X to X,’ (a construction characterized by a semantically restricted set of lexical items able to fill in its syntactic variables) which expresses either the speaker’s surprise at the fact that events go as planned (surprising punctuality interpretation) or the speaker’s surprise at the fact that unplanned events go as if they had been pre-planned (surprising fateful coincidence interpretation). While the construction is not unique, and occurs in other languages, its preferred interpretations are language-specific. The chapter demonstrates differences between Russian and English outlooks on time, based on their fundamental differences in linguistic worldviews. According to one of the central key ideas of the Russian linguistic worldview, events are difficult for human subjects to control, as they are commonly controlled by outside forces, such as fate, and therefore surprising punctuality interpretation prevails in Russian. English, which does not view punctuality as something out of the ordinary, favours the surprising fateful coincidence interpretation of this syntactic phraseme. The idea of fate in relation to temporality is also found in other languages, as demonstrated by Bernard Charlier’s research on Mongolian temporality in his chapter in the current volume.
Evolution of informational technologies in 21st century opens a door for a new form of both governance and political struggle. What is technology today, what influence does it have on society, why and how did mental and material changes interlace - these issues are considered in the article.
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
The dynamics of a two-component Davydov-Scott (DS) soliton with a small mismatch of the initial location or velocity of the high-frequency (HF) component was investigated within the framework of the Zakharov-type system of two coupled equations for the HF and low-frequency (LF) fields. In this system, the HF field is described by the linear Schrödinger equation with the potential generated by the LF component varying in time and space. The LF component in this system is described by the Korteweg-de Vries equation with a term of quadratic influence of the HF field on the LF field. The frequency of the DS soliton`s component oscillation was found analytically using the balance equation. The perturbed DS soliton was shown to be stable. The analytical results were confirmed by numerical simulations.
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.
The paper provides a number of proposed draft operational guidelines for technology measurement and includes a number of tentative technology definitions to be used for statistical purposes, principles for identification and classification of potentially growing technology areas, suggestions on the survey strategies and indicators. These are the key components of an internationally harmonized framework for collecting and interpreting technology data that would need to be further developed through a broader consultation process. A summary of definitions of technology already available in OECD manuals and the stocktaking results are provided in the Annex section.