Three-dimensional light bullets in a Bragg medium with carbon nanotubes

We present a theoretical study of the propagation of three-dimensional extremely short electromagnetic pulses (a.k.a. light bullets) through a Bragg medium containing an immersed array of carbon nanotubes. We demonstrate the possible stable propagation of such light bullets. In particular, our results suggest these light bullets can carry information about the Bragg medium itself.Comment: To appear in Appl. Phys.

Applied Problems of Functional Homonymy Resolution for Russian Language

Applied problems of functional homonymy resolution for Russian language are investigated in the work. The results obtained while using the method of functional homonymy resolution based on contextual rules are presented. Structural characteristics of minimal contextual rules for different types of functional homonymy are researched. Particular attention is paid to studying the control structure of the rules, which allows for the homonymy resolution accuracy not less than 95%. The contextual rules constructed have been realized in the system of technical text analysis

OntoMathPROOntoMath^{PRO} Ontology: A Linked Data Hub for Mathematics

In this paper, we present an ontology of mathematical knowledge concepts that covers a wide range of the fields of mathematics and introduces a balanced representation between comprehensive and sensible models. We demonstrate the applications of this representation in information extraction, semantic search, and education. We argue that the ontology can be a core of future integration of math-aware data sets in the Web of Data and, therefore, provide mappings onto relevant datasets, such as DBpedia and ScienceWISE.Comment: 15 pages, 6 images, 1 table, Knowledge Engineering and the Semantic Web - 5th International Conferenc

An Approach to New Ontologies Development: Main Ideas and Simulation Results

In the paper we consider the technology of new domain's ontologies development. We discuss main principles of ontology development, automatic methods of terms extraction from the domain texts and types of ontology relations

Уклонение от уплаты налогов: библиометрический анализ точек зрения власти, бизнеса и науки

Статья посвящена анализу публикаций, касающихся проблемы уклонения от уплаты налогов. Эта тема привлекает пристальное внимание не только научного сообщества. В статье исследуется соответствие проблематики научных работ по уклонению от уплаты налогов практическим вопросам, обсуждаемым заинтересованными лицами. В качестве источника научных публикаций по данной тематике использовалась электронная база e-Library. В круг заинтересованных лиц, напрямую зависящих от правил налогообложения, входят бизнессообщество и государственные органы. Для них источниками информации по исследуемой теме являются электронная база публикаций издательского дома «Коммерсантъ» и «Российская газета». Для анализа отобрана 301 публикация за 2013-2015 гг. Изучение соответствия проблематики проводилось путем сравнения публикационной активности в разрезе видов публикаций. На первом этапе исследования был выполнен качественный контент-анализ посредством выявления общих тем, обсуждаемых в публикациях. Затем проводился количественный анализ через сравнение распределения публикаций по конкретной теме из каждого источника. Для количественного анализа и визуализации результатов использовались методы библиометрического анализа и картирования. Расчеты производились с помощью программного продукта QDA Miner v.5.0 модуль WordStat v.7.1.7. В результате исследования были сделаны выводы, что самыми популярными темами, интерес к которым не меняется, являются: изменение законодательства, законотворчество и усиление принуждения. Темы, к которым за рассматриваемый период снизился интерес, касаются международных аспектов налогообложения, теневой деятельности, собственности и инвестиций. Отмечено выраженное возрастание интереса сообщества к фирмам-однодневкам, руководству компаний, а также к вопросам штрафов и пени. Исследование позволило выявить определенное несоответствие тем, обсуждаемых бизнесом и властью, по сравнению с темами научных публикаций. Распространенные в научных публикациях темы (теневая экономика, коррупция, фирмы-однодневки, взносы на социальное страхование), гораздо реже встречаются на ресурсах издательского дома «Коммерсантъ» и в «Российской газете», сосредотачивающих основное внимание на вопросах законотворчества и обсуждения изменений в законодательстве. Анализ взаимосвязей в текстах в соответствии с источниками и годом публикации показал, что темы научных исследований сближаются с проблемами, рассматриваемыми властью, а бизнес-сообщество в большей степени вовлекается обсуждение правовой проблематики, т. е. точка зрения власти во многом определяет обсуждение темы уклонения от налогов бизнес-сообществом, и научными кругами. Таким образом, библиометрические методы анализа текстов могут применяться для проведения научных исследований, составления обзоров литературы и тематического поиска информации.This article analyzes the publications relating to the problem of tax evasion. This topic is attractive not only for the academic community, but also for public at whole. The article explores to what extent the scientific publications on tax evasion correspond to practical issues discussed among the stakeholders. We used the electronic database of e-Library as a source of scientific publications on the subject. The principal stakeholders directly dependent on the taxation are the taxpayers and public authorities. We used the electronic database of publications «Kommersant» publishing house and the «Rossiyskaya Gazeta» to reflect issues discussed among the stakeholders. We selected for analyze 301 publications for the period of 2013-2015. The study was conducted by comparing the publication activity by types and period of publications. In the first stage of the study we have done the qualitative content analysis by identification the common themes discussed in hole sample of publications. Then, a quantitative analysis was conducted by comparing the distribution of publications on a particular topic from each source. We used bibliometric analysis method for the quantitative and bibliographic mapping method to visualize the results of research. Calculations were performed using the software QDA Miner v.5.0 module WordStat v.7.1.7. As a result, studies have concluded that the most popular topics of interest for which no changes are: changes in legislation, legislation and increased enforcement. Using the results of the conducted study, we can identify the main similarities and differences between the monitored sources. We can see the special attention to the: Legislation changes, Law enforcement, Entrepreneurship. Marked reduction of interest can be noted regarding to the following topics: International aspects of taxation, Shadow economy, Ownership, property, investment. The growth of interest can be noted in relation to the following topics: Directorship, Article of the Tax Code, Short-lived companies, Arrears and fines. The study revealed a certain disparity between the topics discussed among academic community and stakeholders. The topics discussed in the majority of scientific texts (shadow economy, corruption, the firm one-day, social security contributions), a much rarer can be found in the publication of «Kommersant» and «Rossiyskaya Gazeta» which focuses mainly on matters of legislation. Analysis of the relationships in the texts according to the source and year of publication showed that research topics converge with issues considered by the public authorities. The business community more involved in discussion the legal issues, because the government notion works upon the impression about tax evasion of the business community and academia. Thus, bibliometric text analysis techniques can be used for research, preparation of literature reviews and thematic information retrieval

Two-dimensional Few-circle Optical Pulses of Bessel Profile in Bragg- environment with Carbon Nanotubes

We consider the task about few-circle optical pulses dynamics (light bullet) with Bessel profile in the environment with spatial modulate refractive index with carbon nanotubes. We show that light bullets propagate stably. Electromagnetic field of pulse describes classically, on basis of Maxwell equation, and carbon nanotubes give dispersion law for electrons, which interacting with pulse. We show that light bullets propagate stably

Annotation of mathematical formulas in PDF documents

This article provides an overview of existing solutions for semantic analysis of mathematical documents, and also presents a method for automatic semantic analysis of documents in PDF format. This method searches for local variables in the text of the article, extracts their definitions and connects concepts with formulas. The advantage of the method over the existing ones is independence from the markup of theoriginal PDF document, which expands the scope of the method. We provide estimates of recall, precision and Fmeasure for algorithms for finding variables and linking local variables with formulas. The resulting semantic markup of the document will be used to create a collection of documents suitable for the semantic formula search service, which is part of the set of services of the Lobachevskii-DML digitalpublishing system

OntoMathPRO{}^{\mathbf{PRO}} 2.0 Ontology: Updates of the Formal Model

This paper is devoted to the problems of ontology-based mathematical knowledge management and representation. The main attention is paid to the development of a formal model for the representation of mathematical statements in the Open Linked Data cloud. The proposed model is intended for applications that extract mathematical facts from natural language mathematical texts and represent these facts as Linked Open Data. The model is used in development of a new version of the OntoMath${}^{\mathrm{PRO}}$ ontology of professional mathematics is described. OntoMath${}^{\mathrm{PRO}}$ underlies a semantic publishing platform, that takes as an input a collection of mathematical papers in LaTeX format and builds their ontology-based Linked Open Data representation. The semantic publishing platform, in turn, is a central component of OntoMath digital ecosystem, an ecosystem of ontologies, text analytics tools, and applications for mathematical knowledge management, including semantic search for mathematical formulas and a recommender system for mathematical papers. According to the new model, the ontology is organized into three layers: a foundational ontology layer, a domain ontology layer and a linguistic layer. The domain ontology layer contains language-independent math concepts. The linguistic layer provides linguistic grounding for these concepts, and the foundation ontology layer provides them with meta-ontological annotations. The concepts are organized in two main hierarchies: the hierarchy of objects and the hierarchy of reified relationships

Smoking and COPD: Endothelium-Related and Neuro-mediated Emphysema Mechanisms

This chapter describes endothelium-related and neuro-mediated mechanisms of emphysema development in chronic obstructive pulmonary disease (COPD) and smoking on the basis of previously completed studies, literature data, and own researches. As components of neurogenic inflammation in the processes of tissue remodeling in emphysema, we describe the distribution and activity of the substance P, neurokinin-1 and its receptor, tissue metalloproteinases and their tissue inhibitors in the lungs during the entire experimental period, the modeling of COPD in rats with a smoking model. We also analyzed the content of neurokinin system markers, the localization, and markers of tissue metalloproteinases in human lung tissue structures. We have confidence that there is a special morphofunctional continuum of development of lower respiratory tract remodeling in response to chronic exposure to tobacco smoke and the development of inflammation in COPD. New data suggest that imbalance of neuro-mediated interactions, alteration of vasomotoric signaling mechanisms, secretion, mucociliary clearance, cytoprotection involving substance P-dependent components with impaired content, and development of dystopia of matrix metalloproteinases and their tissue inhibitors are involved in the initiation of morphological restructuring. Research in this direction should be continued to allow approaches to the development of preventive and therapeutic strategies for emphysema