1,720,957 research outputs found

    Discrete Transforms and Their Application in Coding Theory and Combinatorics

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    ИМИ-БАН, 19.09.2022 г., присъждане на образователна и научна степен "доктор" на Паскал Николаев Пиперков, професионално направление: математика, докторска програма: алгебра и теория на числата. [Piperkov Paskal Nikolaev; Пиперков Паскал Николаев

    Функции и трансформация на Уолш. Математически основи и някои приложения

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    The purpose of this article is to popularize the Walsh functions. A methodology for teaching of Walsh functions is presented. The Descrete Walsh-Hadamard transform is described as well as their applications.Научното изследване е проведено като част от проекта „Изследване на приложението на нови математически методи за анализ на кардиологични данни“ № КП-06-Н22/5 от 07.12.2018 г., финансиран от Фонд „Научни изследвания“ на Република България

    Образът на свети Йоан Рилски в светите места и устойчивия туристически ефект от поклонничеството

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    Изображенията на Свети Йоан Рилски са част от десетгодишната институционализирана традиция на поклонническия път към централното свето място в българия, ставропигиалния манастир "Успение Богородично" в Рила планина. Поклонниците следват стъпките на средновековните българи по пътя на историческите пренасяния на мощите на преподобни светец. Създавайки нова религиозна и туристическа практика, съвременните православни туроператори и местните власти организират популярно събитие по-богато от някогашното спешно църковно шествие. Вървейки през страната по Светия Рилски път всяко лято за повече от месец, поклонниците носят, откриват и обменят свещени изображения на българския светец-покровител, които вдъхновяват хора и общности и носят културна ценност и туристическа устойчивост в отдалечени и притихнали свети места.Images of Saint John of Rilla are part of ten-year institutionalised tradition of pilgrimage to central sacred space in Bulgaria, the stavropegial monastery Dormition of Theotokos in Rilla mountain. Pilgrims follow the steps of medieval Bulgarians on the route of historical translation of the relics of the reverend saint from Veliko Tarnovo through Sofia to Rilla monastery in 1469. Creating new religious and tourist practice, contemporary Eastern Orthodox guides and local authorities organise popular event richer than just an occasional restoration of previous emergent church procession. Walking through the country on the Sacred Rilla road every summer for more than a month, pilgrims bring, find, and exchange sacred images of Bulgarian patron saint that inspire people and communities, and bring cultural value and tourist sustainability to remote and quiet sacred places

    Mетодика за изследване на влиянието на религиозната активност въхру физиологичните показатели на сърдечната дейност

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    The article considers the problem with the influence of changes in the emotional state as a result of various events and activities of the parameters of physiological data on the cardiac activity of the participants, extracted through a holter device. A classification of emotional states from the point of view of Christian morality is proposed, as well as a classification of events and activities related to the church and secular life of an Orthodox Christian in Bulgaria. On the basis of the created classifications are made surveys. With the help of statistical methods, a comparison and analysis of the obtained physiological data for the cardiac activity of the respondents is made, extracted with the help of a holter device.Научното изследване е проведено като част от проекта „Изследване на приложението на нови математически методи за анализ на кардиологични данни“ № КП-06-Н22/5 от 07.12.2018 г., финансиран от Фонд „Научни Изследвания“

    Създаване на архив на кардиологична база данни

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    The paper presents an information platform for working with cardiac data registered with ECG, PPG, Holter device. The platform enables input, editing, processing and storage of the registered data and the results of the analyzes carried out on them. The report presents the options for creating an archive of the cardiology database.Научното изследване е проведено като част от проекта „Изследване на приложението на нови математически методи за анализ на кардиологични данни“ № КП-06-Н22/5 от 07.12.2018 г., финансиран от Фонд „Научни изследвания“ на Република България

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods
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