Institute of Mathematics and Informatics

Bulgarian Digital Mathematics Library at IMI-BAS
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    3993 research outputs found

    Artificial Intelligence in and for Education in Bulgaria – Measures for Achievement Reliable Intelligent Growth

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    Report published in the Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, November, 2020Навлизането на изкуствения интелект на пазара на труда, социалната сфера и ежедневието води до качествени промени в досегашните стереотипи. За адекватното ни развитие като отделни личности и на обществото като цяло е необходимо да се обърне особено внимание на промяната на образователната система, която ще създаде необходимите знания и умения за вписване в новите условия. Настоящата статия съдържа вижданията на авторите за необходимите промени в образованието в България за постигането на интелигентен растеж. Промените обхващат целия цикъл на формалното образование, професионалното обучение и висшето образование, като едновременно с това поставят акцент върху ученето през целия живот, за да се даде възможност на хората да придобиват и подобряват адекватни умения спрямо изменящата се среда.Association for the Development of the Information Society, Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Plovdiv University "Paisii Hilendarski

    Теоретичен и числен анализ на диференчни схеми за уравнения на Бусинеск

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    ИМИ-БАН, 08.06.2020, присъждане на образователна и научна степен "доктор" на Веселина Иванова Вучева. [Vucheva Veselina Ivanova; Вучева Веселина Иванова

    Quadruples for Residue Number Systems with Sum of Quotients a Power of a Prime

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    We investigate Residue Number Systems (RNS) of special type which were recently shown to be useful for some type of computations in embedded systems. We develop an algorithm for derivation of all quadruples for RNS under investigation subject to certain restrictions

    Идентифициране на опасностите и оценка на рисковете и превантивни мерки в специфични обекти

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    The present work proposes an integrated approach in identifying hazardous substances, materials and sections (modules) of the studied specific (potentially hazardous) site, having an impact on safety, identifying the sources of danger in this site, assessing the consequences of potential major accidents at the site, as well as determining and assessing the adequacy of preventive, control and risk mitigation measures. A concrete example of application of the approach is presented

    Method for Spread Spectrum Steganography with Cryptographic Algorithm

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    Report published in the Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, November, 2020This article proposes an approach for building steganographic embedding in images of encrypted textual information. The main steganographic directions and cryptographic algorithm for text encryption are described. The advantages of the method are pointed out, which increases the level of security using the proposed approach.Association for the Development of the Information Society, Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Plovdiv University "Paisii Hilendarski

    How Will Cloud Services Change Under the GDPR in 2020

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    Report published in the Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, November, 2020Bulgaria joined the Council for National Open Science Coordination (CoNOSC), laying the groundwork for creating data sharing conditions (October 2019). The CoNOSC network supports national initiatives for open data from publicly funded research to be findable, accessible, interoperable, reusable (FAIR Data). Access to and re-use of the data is possible in full for those persons whose personal data meet specific user requirements - institutional affiliation, qualification, to name a few. The GDPR is designed to harmonize data privacy laws across the European Union, while GRDPR + includes next year's GDPR and similar data privacy regulations. The challenge is how to combine Open access and Open data with GDPR+ in a HPC laboratory.Association for the Development of the Information Society, Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Plovdiv University "Paisii Hilendarski

    Containers in High Performance Computers – Case Studies

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    Report published in the Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, November, 2020Docker containers are not the first choice in the field of high performance computing (HPC) due to the need for escalation of the privileges in the implementation of the containers as well as the difficult one integration with batch systems. Singularity is a better alternative to Docker containers in HPC developed by the Berkeley Laboratory (Lawrence Berkeley National Laboratory). The performance of containerized applications and the ability to set up and configure parallel applications with multiple dependencies on external (third party) software packages is assessed for the following cases: one compute node is only used (32 cores); multiple software packages in one container for classification of chest X - ray images of patients with SARS-CoV-2 https://github.com/lindawangg/COVID-Net using the platform for Tensorflow open source machine learning and computer vision library OpenCV.Association for the Development of the Information Society, Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Plovdiv University "Paisii Hilendarski

    Приложение на методи от нелинейната динамика за анализ на вариабилността на сърдечната честота

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    The article presents the results of the study of the nonlinear properties of the dynamics of the intervals between heartbeats obtained from digital ECG signals of healthy subjects, patients with arrhythmia and patients with heart failure. Data analysis was performed by applying the following two methods of nonlinear dynamics: Recurrence plot and Poincaré plot, comparing with the linear histogram method. The visual evaluation of the repeating diagrams constructed by the Recurrence plot allows obtaining quick information about the behaviour of the studied process. The reduction of the complexity of the process (heart rhythm) and the transition to periodicity is indicative of a pathological change in the regulation of heart rhythm. Poincaré plot is a useful tool when rare and sudden disorders occur against the background of a monotonous heart rate. Cardiovascular diseases significantly affect the dynamics of heart rate, reducing variability.Научното изследване е проведено като част от проекта „Изследване на приложението на нови математически методи за анализ на кардиологични данни“ № КП06-Н22/5 от 07.12.2018 г., финансиран от Фонд „Научни Изследвания“

    Башкирский мифологический баит «Сак-Сук» и сказки, легенды болгарского народа

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    Башкирский баит «Сак и Сук» является одним из популярных поэтических произведений народного устно-поэтического творчества. Баит широко распространен среди башкир, татар и чувашей. Данная статья посвящена исследованию параллелей в сюжетах башкирских текстов мифологического баита «Сак-Сук» со сказками и легендами болгарского народа о кукушке (филине) и сове. Выяснилось, что у данных фольклорных произведений сходная сюжетная основа: проклятие матерью своих непослушных детей и превращение их в птиц, которым не суждено встретиться друг с другом. Отличия лишь в названиях птиц, хотя у двух народов главные герои превращаются в ночных птиц из семейства совиных. И в некоторых случаях в болгарских фольклорных произведениях один из героев (в основном дочь) превращается в кукушку.The Bashkir bait "Sak and Suk" is one of the most popular poetic works of folk oral poetry. Bait is widespread among the Bashkirs, Tatars and Chuvash. This article is devoted to the study of parallels in the plots of the Bashkir texts of the mythological bait Sak-Suk with the tales and legends of the Bulgarian people about the cuckoo (owl) and the owl. It turned out that these folklore works have a similar plot basis: the mother curses her naughty children and turns them into birds that are not destined to meet each other. The differences are only in the names of the birds, although in the two peoples the main characters turn into night birds from the owl family. And in some cases, in Bulgarian folklore works, one of the heroes (mainly a daughter) turns into a cuckoo

    Геймифицирани приложения за София, популяризиращи културно-историческото наследство на столицата

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    Геймифицираните приложения за маркетингово цели набират все по-голяма популярност. Настоящият доклад изследва спецификата на геймифицирани приложения за София като туристическа дестинация, използващи културно-историческото наследство на града. В резултат са изследван водещи добри практики в Европа и е направен детайлен анализ на най-популярните приложения за София, техните възможности и ограничения.Gamified applications are gaining increasing popularity for marketing reasons. The paper explores the specifics of gamed applications for Sofia as a tourist destination based on the cultural and historical heritage of the city. As a result, leading good practices in Europe have been studied and a detailed analysis of the most popular applications for Sofia, their capabilities and limitations has been carried out

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