In this paper the assessment of the reliability of radiofrequency cords was carried out. The analysis of mathematical models of the failure rate assessment of components of the radiofrequency cords was submitted and the optimal model, combining incoming components, was deduced. It was concluded that during the calculation of the reliability of the radiofrequency cords, their models must take into account the maximum number of influencing factors in order to produce adequate results.
Recent research on the international Monetary Fund [Global Financial Stability Report, 2015] outlines that participants of fixed income assets market in advanced and emerging market economies have become worried that both the level of market liquidity and its resilience may be declining.
The market liquidity is a many-dimensional concept and cannot be captured by any single measure. Nonetheless, depending on what dimension of market liquidity one is trying to estimate (for instance, time, cost, or quantity) some measures are more informative than others.
Based on the data provided by the National Settlement Depository and the National Fund Association and covered the period from the 6 January 2014 to 15 June 2015 the liquidity of 1497 different bond emissions was analyzed. We calculate a daily liquidity index for each bond using Pareto regularization approach [Gambarov, 2010]. This index is constructed from three bond emission characteristics: trading volume, number of trading days, and number of transactions. We found that the most important factor from these three for Russian bonds is the number of trading days due to the very low trade intensity of Russian fixed income market (the largest part of the Russian corporate bonds even has no active market).
Considering the average liquidity on the Russian bond market we conclude that during last year the deterioration tendency has been dominating on the market. Thus, the main purpose of current research is to analyze which factors bring the major impact on the market liquidity (in particular, weaken) in Russia and in other advanced and emerging market countries.
A lot of factors affect the liquidity of the markets, which can be broadly divided into three groups: risk-driven factors, cost-driven factors and investors and issuers characteristics. It is also worth mentioning that macroeconomic factors (e.g. restrictions on derivatives trading (such as those imposed by the European Union in 2012) have weakened the liquidity of the underlying assets) strongly affect markets in general and liquidity in particular.
The article deals with an approach to determining the state of information security based on the analysis of spurious emission of electromagnetic components. Attention is drawn to the possibility of the formation of the data, obtain samples for the analysis of the state of the information security. An experiment in result of which the amplitude-frequency characteristics of the analyzed radiation. Formed data tuples estimated probability values correctly determine the state on the basis of the data obtained.
The paper deals with the mathematical model of the failure rate and storage time for electronic components. It is shown that the use of standardized models allows us to calculate only the Reliability function. For calculation of the indicators of the "storage time", a method based on the methodology of estimation of indicators of durability.
The question about possibilities to use Twitter users’ moods to increase accuracy of stock price movement prediction draws attention of many researchers. In this paper we examine the possibility of analyzing Twitter users’ mood to improve accuracy of predictions for Gold and Silver stock market prices. We used a lexicon-based approach to categorize the mood of users expressed in Twitter posts and to analyze 755 million tweets downloaded from February 13, 2013 to September 29, 2013. As forecasting technique, we select Support Vector Machines (SVM), which have shown the best performance. Results of SVM application to prediction the stock market prices for Gold and Silver are discussed.
We compare two popular tracing traitor schemes (1) using non-binary codes with identifiable parent property (IPP-codes) and (2) using family of sets with identifiable parent property. We establish a natural basis for comparing and show that the second approach is stronger than IPP-codes. We also establish a new lower bound on the cardinality of the family of sets with identifiable parent property.
The article describes an approach to scientific publications repository creation based on ontology approach and corpus linguistics methods, processing of unstructured data (scientific papers) using GATE. Implementation of discussed methods is intended to decrease significantly labor intensity of information search and analysis, provide operational use of information in research.
Analytical communities for the goal of this paper can be defined as loosely united clusters of professionals doing joint or related work in policy analysis, research and development, who frequently work together on common analytical goals and clients, while not necessarily form a special organizational structure which differ them from think tank. Examples of analytical communities could be university research departments, regular authors of one analytical journal, members of certain intellectual clubs, or regularly meeting informal research groups, including individual intellectuals working together on the regular basis. The goal of this paper is to show an important connection between regional and local analytical communities and local administrations of the Russian regions to specify a unique role the analytical communities can play in strategic planning, providing local administrations both with data, ideas, solutions, and scenarios of social developments, which local authorities are interested to get the answers to.
The paper discusses the problem of defining the characteristics of processes related to development and implementation of telecommunication technologies. These characteristics must reflect an adequate assessment of expectations for the implementation of new technologies and be a basis for correct and relevant decision-making, which should lead to key competitive advantages, both for an individual enterprise and the economy of the country as a whole. The above circumstances have predetermined the topicality of the research study, whose aim at this stage is to assess the adequacy of the analytical model, which is developed on the basis of Gartner’s hype cycle model and reflects the dependence of expectations for the technology on a time factor. The results of analytical modeling have been obtained on the example of the commonly used telecommunication technology Bluetooth. The source data included a number of articles on the relevant subject from Scopus database. Based on the obtained results, it has been concluded on the working capacity of the used model and recommendations have been given on its possible improvement.
To improve Wi-Fi performance in scenarios with high collision probability, recent amendments to the Wi- Fi standard introduce a number of channel access methods based on preliminary channel time reservations. A common feature of these methods is that channel time is reserved in a periodic manner. Unfortunately, having defined a number of channel reservation methods, the amendments say nothing on how much channel time shall be reserved to transmit a stream with required quality of service and minimal channel resource consumption. In this paper, we develop a mathematical model of streaming via periodic reservations which helps to answer this question.
The concept of “global governance” emerged as the focus of active scientific debates mainly after the studies of Willy Brandt and his colleagues from the UN Commission on global governance. This Commission was created to discuss possibilities for solution by joint efforts of such global problems as deterioration of environment, fight against poverty, infection diseases, etc. In 1995 the Commission prepared its Report “Our global neighborhood”. The Report justifies necessity of global governance by claiming that its development is an essential part of humans’ efforts towards rational organisation of life on Earth and this process will continue forever (Our Global Neighborhood...1995). The reason for creation of global governance arises from the conviction that humankind after the era of global wars and global confrontation has a unique opportunity for adoption of the “global civil ethics”, which should be founded on the package of fundamental values, uniting people of all cultural, political, religious and philosophic beliefs. Such governance should manifest democratic principles on every level and should be exercised according to the established legal norms, which should embrace everyone.
Nowadays social data analysts use a complicated mix of languages, methods and technologies for analyzing social networks services (SNS) data. In this article we describe approaches and technologies for extracting, analyzing and visualizing social data using Formal Concept Analysis Research Toolbox (FCART). Integrated process of analyzing SNS data with a set of research tools based on Formal Concept Analysis is considered with examples on datasets from Russian segment of LiveJournal.
Building long-term customer relations plays a pivotal role in contemporary management practice. Customer relationship management process in a company involves various different actors ranging from top management to line-level employees. One of the key areas of it is related to the utilization of corporate CRM system which serves as crucial information source in providing better customer insight. This article explores directions for improving the use of CRM system through analyzing the gaps between its perception by managers and sales representatives in a multinational pharmaceutical company. The field research is based on a quantitative data from online questionnaires. The sample consists of 219 representatives based in four emerging markets. These initial findings could be useful for other pharmaceutical companies in emerging markets.
In this paper, we analyse the strategies and stratification of Russian universities in the Northwestern region. By enriching traditional social network analysis scientometric tools, we developed web presence indicators focused on the contexts in which universities are linked with businesses and are mentioned in media. We treat resulting groups in terms of Gouldner’s cosmopolitans versus locals theory, based on differences in their publication strategies, and embeddedness in business connections and media contexts.
In this work we consider modeling of services with workflow modules, which are a subclass of Petri nets. The service compatibility problem is to answer the question, whether two Web services fit together, i.e. whether the composed system is sound. We study complementarity of service produced/consumed resources, that is a necessary condition for the service compatibility. Resources, which are produced/consumed by a Web service, are described as a multiset language. We define an algebra of multiset languages and present an algorithm for checking the conformance of resources for two given structured workflow modules.
Current research is devoted to the problem of the ombudsman institution and NGOs interaction. Therefore, the question of the research is the following: which factors influence on the interaction of the ombudsmen and NGOs? The research is made in theoretical and applied dimensions. It is based on both structural, system and institutional methodological approaches. The current study purpose is to develop matrix applicable for the description of ombudsman and NGOs interaction and cooperation. The research is based on 5 cases of Russian regions (Saint Petersburg, Arkhangelsk region, Novgorod region, Kaluga region and Republic of Dagestan). The research is based on qualitative methods such as comparative case-study, descriptive-inductive method, double reflection, triangulation and grounded theory instrumentality that provides an achievement of theoretical results.
The distribution of the sum of independent random variables plays an important role in many problems of applied mathematics. In this paper we concentrate on the case when random variables have a continuous distribution with a discontinuity (or a probability mass) at a certain point r. Such a distribution arises naturally in actuarial mathematics when a responsibility or a retention limit is applied to every claim payment. An analytical expression for the distribution of the sum of i.i.d. random variables, which have a uniform distribution with a discontinuity, is reported.
This paper presents an anaphora analysis system that was an entry for the Dialog 2014 anaphora analysis competition. The system is based on ABBY Y Compreno linguistic technologies. For some of the tasks of this competition we used basic features of the Compreno technology, while others required building new rules and mechanisms or making adjustments to the existing ones. Below we briefly describe the mechanisms (both basic and new) that were used in our system for this competition.