Results first stage

(A) LIST OF SCIENTIFIC PUBLICATIONS

A1. Publications in magazines (8)

  • Ilchev, R. Andreev, Z. Ilcheva, “Heterogeneous IoT Platform for Device Management and Environmental Sensor Data Gathering”, Serdica Journal of Computing, Volume 12, Number 1, 2018
    This journal is referenced by: Zentralblatt MATH; All-Russian Institute for Scientific and Technical Information – VINITI (letter in pdf); The European Mathematics Library – EuDML; Google Scholar and DRIVER Search Portal
  • Borovska, D. Ivanova, I. Draganov, ” Internet of Medical Imaging Things and analytics in support of precision medicine for the case study of thyroid cancer early diagnostics”, Serdica Journal of Computing, Volume 12, Number 1, 2018
    This journal is referenced by: Zentralblatt MATH; All-Russian Institute for Scientific and Technical Information – VINITI (letter in pdf); The European Mathematics Library – EuDML; Google Scholar and DRIVER Search Portal
  • Nedelcheva G., Nikolov, E. Shoikova, , “Challenges and Opportunities of Blockchain Technology in Industrial Applications”, Serdica Journal of Computing, Volume 12, Number 1, 2018
    This journal is referenced by: Zentralblatt MATH; All-Russian Institute for Scientific and Technical Information – VINITI (letter in pdf); The European Mathematics Library – EuDML; Google Scholar and DRIVER Search Portal
  • Shoikova, R. Nikolov,E. Kovatcheva, “Conceptualising of Smart Education”, ELECTROTECHNICA & ELECTRONICA E+E Vol. 52. No 3-4/2017, pp.29-37, Monthly scientific and technical journal Published by: The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA
    E+E Link: http://epluse.fnts.bg/

Citations:
1. The Smart Learning Management System (SLMS) February 2019 Conference: The Free and Open Source Software Conference (FOSSC Oman 2019) At: Sultanate of Oman, Muscat, Sultan Qaboos University, Iman Al-Kindi, Zuhoor Abdullah Al-Khanjari

  • Kovatcheva E., “UX design models for IoT”, Serdica Journal of Computing, Volume 12, Number 1, 2018
    This journal is referenced by: Zentralblatt MATH; All-Russian Institute for Scientific and Technical Information – VINITI (letter in pdf); The European Mathematics Library – EuDML; Google Scholar and DRIVER Search Portal

A2. Publications at national and international conferences (25)

  • Jekov, E. Shoikova, D. Donchev, P. Petkova,” Study on the IoT Ecosystem Business Models and the Segment of Startups”, ICERI2017 Proceedings 10th annual International Conference of Education, Research and Innovation, Seville, Spain. 16-18 November, 2017. ISBN: 978-84-697-6957-7 / ISSN: 2340-1095, doi: 10.21125/iceri.2017, Publisher: IATED DEP. LEGAL: V-2851-2017 Format: USB Flash, pages: 4863-4873, Indexed in Web of Science

IATED Digital Library publication ICERI2017: https://library.iated.org/publications/ICERI2017

Proceedings Front Mater: https://library.iated.org/download/ICERI2017FRONTMATTER

ICERI2017 Proceedings Table of contents: https://library.iated.org/download/ICERI2017TOC

Abstract: https://library.iated.org/view/JEKOV2017STU

citations:
1. Interconnected business models: present debates and future agenda March 2020 Journal of Business & Industrial Marketing ahead-of-print(ahead-of-print) DOI: 10.1108/JBIM-06-2019-0292, Milan Jocevski, Niklas Arvidsson, Antonio Ghezzi

  • Dimitrov, R. Nikolov, B. Jekov, “Standards and Interoperability Within Smart City Ecosystem”, ICERI2017 Proceedings 10th annual International Conference of Education, Research and Innovation, Seville, Spain. 16-18 November, 2017. ISBN: 978-84-697-6957-7 / ISSN: 2340-1095, doi: 10.21125/iceri.2017, Publisher: IATED DEP. LEGAL: V-2851-2017 Format: USB Flash, pages: 4346-4355 Indexed in Web of Science

IATED Digital Library publication ICERI2017: https://library.iated.org/publications/ICERI2017

Proceedings Front Mater: https://library.iated.org/download/ICERI2017FRONTMATTER

ICERI2017 Proceedings Table of contents: https://library.iated.org/download/ICERI2017TOC

Abstract:  https://library.iated.org/view/DIMITROV2017STA

  • Terzieva, V., Savov, T., Todorova, K., Andreev, R., Kademova-Katzarova, P. “Internet of Things in Education: Smart Environment”, ICERI2017 Proceedings 10th annual International Conference of Education, Research and Innovation, Seville, Spain. 16-18 November, 2017. ISBN: 978-84-697-6957-7 / ISSN: 2340-1095, doi: 10.21125/iceri.2017, Publisher: IATED DEP. LEGAL: V-2851-2017 Format: USB Flash, pages: 4679-4685 Indexed in Web of Science

IATED Digital Library publication ICERI2017: https://library.iated.org/publications/ICERI2017

Proceedings Front Mater: https://library.iated.org/download/ICERI2017FRONTMATTER

ICERI2017 Proceedings Table of contents: https://library.iated.org/download/ICERI2017TOC

Abstract:  https://library.iated.org/view/TERZIEVA2017INT

  • Chikalanov, A., Nikolov, R., Petkov, J. & Petrov, Z., “A use-case driven open reference architecture for cross-domain IoT open source component based applications”, International Conference “Big Data, Knowledge and Control Systems Engineering – BdKCSE’2017”, 7 December 2017, Sofia (Bulgaria), Open Access Proceedings, ISSN:2367-6450, pages: 9-25

Conference link: http://conference.ott-iict.bas.bg/

Scientific Programme: http://conference.ott-iict.bas.bg/scientific-programme/

Open Access Proceedings: http://conference.ott-iict.bas.bg/wp-content/uploads/2017/11/bdkcse2017_site.pdf

  • Nedeltcheva, G., Shoikova, E, Hristova, E., “Challenges of Building  Augmented Reality Applications Enhanced by IoT Data and Artificial Intelligence”, International Conference “Big Data, Knowledge and Control Systems Engineering – BdKCSE’2017”, 7 December 2017, Sofia (Bulgaria), Open Access Proceedings, ISSN:2367-6450, pages: 45-59

Conference link: http://conference.ott-iict.bas.bg/

Scientific Programme: http://conference.ott-iict.bas.bg/scientific-programme/

Open Access Proceedings: http://conference.ott-iict.bas.bg/wp-content/uploads/2017/11/bdkcse2017_site.pdf

  • Gaidarski, I, Kutinchev, P, “Holistic Approach to Data Protection – Identifying the Weak Points in the Organization”, International Conference “Big Data, Knowledge and Control Systems Engineering – BdKCSE’2017”, 7 December 2017, Sofia (Bulgaria), Open Access Proceedings, ISSN:2367-6450, pages: 125-135

Conference link: http://conference.ott-iict.bas.bg/

Scientific Programme: http://conference.ott-iict.bas.bg/scientific-programme/

Open Access Proceedings: http://conference.ott-iict.bas.bg/wp-content/uploads/2017/11/bdkcse2017_site.pdf

  • Nedeltcheva G., E. Shoikova, “Innovation Through Design Thinking, User Experience And Agile: Towards Cooperation Framework”, TELECOM 2017, XXV National Conference with International Participation “ Telecommunications Yesterday, Today, Forever”, Sofia (Bulgaria) 26-27 October 2017, Open Access Proceedings TELECOM 2017 ISSN: 1314-2690 page 121-129

Scientific Programme: http://ceec.fnts.bg/telecom/2017/documents/Telecom-2017-Program-en.pdf

Open Access Abstracts:  http://ceec.fnts.bg/telecom/2017/documents/Telecom-2017-Abstracts-bg-en.pdf

Open Access Proceedings TELECOM 2017 Contents: http://ceec.fnts.bg/telecom/2017/documents/CD2017/Program/Contents-en.htm

Paper Link:http://ceec.fnts.bg/telecom/2017/documents/CD2017/Papers/28.pdf

citations:
1. DESIGN THINKING TRANSFORMANDO A CULTURA ORGANIZACIONAL November 2019 Conference: Congresso Internacional de Conhecimento e Inovação At: Porto Alegre Project:  Estrutura Orgaizacional, Iur Cristine Moraes, Maria Teresa Cortes De Pena Bustamante, Mehran Misaghi, Marilei Osinski

Scientific Programme: http://ceec.fnts.bg/telecom/2017/documents/Telecom-2017-Program-en.pdf

Open Access Abstracts:  http://ceec.fnts.bg/telecom/2017/documents/Telecom-2017-Abstracts-bg-en.pdf

Open Access Proceedings TELECOM 2017 Contents: http://ceec.fnts.bg/telecom/2017/documents/CD2017/Program/Contents-en.htm

Scientific Programme: http://ceec.fnts.bg/telecom/2017/documents/Telecom-2017-Program-en.pdf

Open Access Abstracts:  http://ceec.fnts.bg/telecom/2017/documents/Telecom-2017-Abstracts-bg-en.pdf

Open Access Proceedings TELECOM 2017 Contents: http://ceec.fnts.bg/telecom/2017/documents/CD2017/Program/Contents-en.htm

  • Shoikova, R. Nikolov, E. Kovatcheva , „Smart Digital Education Enhanced by AR and IoT Data” 12th annual International Technology, Education and Development Conference, INTED2018, held in Valencia (Spain) on the 5th, 6th and 7th of March, 2018, Proceedings of INTED2018 Conference, paper 1392, pp. 5861-5871, ISBN: 978-84-697-9480-7, Indexed in Web of Science – ISI Conference Proceedings Citation Index

https://iated.org/inted/publications

INTED2018.zip” from Google Drive: https://drive.google.com/file/d/1APm4fU_FwqbCidfmD8rnFPlsVTm_Sc7J/view

  • Kovatcheva, E. Shoikova, „UX DESIGN STUDIO”, 12th annual International Technology, Education and Development Conference, INTED2018, held in Valencia (Spain) on the 5th, 6th and 7th of March, 2018, Proceedings of INTED2018 Conference, paper 1714, pp. 7296-7300, ISBN: 978-84-697-9480-7, Indexed in Web of Science – ISI Conference Proceedings Citation Index

https://iated.org/inted/publications

INTED2018.zip from Google Drive: https://drive.google.com/file/d/1APm4fU_FwqbCidfmD8rnFPlsVTm_Sc7J/view

  • Nedeltcheva G., E. Shoikova, “Models for Innovative IoT Ecosystems”, BDIOT – ACM 2017 : ACM – 2017 International Conference on Big Data and Internet of Things (BDIOT2017)–Ei Compendex, Scopus and ISI, December 20-22, 2017 London, UK, BDIOT 2017 – ACM, ISBN: 978-1-4503-5430-1 Collection of International Conference on Big Data and Internet of Things (BDIOT2017) BDIOT2017-250, Link: http://www.bdiot.org/

BDIOT – ACM 2017 Collection published by ACM from Google Drive: https://drive.google.com/file/d/1jzXduOckTN7wudRhxJvvpkrHjUzQSCQl/view

citations:
1. Bio-Inspired Approaches to Safety and Security in IoT-Enabled Cyber-Physical Systems, February 2020, Sensors 20(3): 844,  DOI: 10.3390/s20030844,  License CC BY Anju P. Johnson . Hussain Al-Aqrabi, Richard Hill
2. An Architecture for the Real-Time Data Stream Monitoring in IoT August 2019 DOI:  10.1007/978-981-13-8759-3_3 In book: Multimedia Big Data Computing for IoT Applications: Concepts, Paradigms, and Solutions  Publisher: Springer Project:  Real-Time Decision Making on Measurement and Evaluation Projects Mario José Diván Maria Laura Sanchez Reynoso
3. Multi-sided Platforms for the Internet of Things, July 2018, Lecture Notes in Business Information Processing, DOI:  10.1007/978-3-319-94214-8_28, In book: Business Modeling and Software Design Thibault Degrande, Frederic Vannieuwenborg, Sofie Verbrugge, Didier Colle
4. A Shift From Monolithic to Compound Digitization: A New Perspective of Digital Economy October 2018  DOI:  10.1109/ICTC.2018.8539564  Conference: 2018 International Conference on Information and Communication Technology Convergence (ICTC) Toshihiko Yamakami

  • Nedeltcheva G., E. Shoikova, “Coupling Design Thinking, User-Experience Design and Agile”, BDIOT – ACM 2017 : ACM – 2017 International Conference on Big Data and Internet of Things (BDIOT2017)–Ei Compendex, Scopus and ISI,  December 20-22, 2017 London, UK, Collection of International Conference on Big Data and Internet of Things (BDIOT2017) BDIOT2017-251 , Link: http://www.bdiot.org/

BDIOT – ACM 2017 Collection published by ACM from Google Drive: https://drive.google.com/file/d/1jzXduOckTN7wudRhxJvvpkrHjUzQSCQl/view

Citations:
1. Understanding the Transfer Student Experience Using Design Thinking June 2017, Reference Services Review 45(2) DOI:  10.1108/RSR-10-2016-0073 , Linda Whang, Christine Tawatao, John Danneker, Amelia Klaus

  • Gaidarski I.,“Information Security in School environment”, QED’17 UNESCO International Workshop Children in the Digital Era, KoMЕIN Project Workshop: “Conceptual Modeling and Simulation of Internet of Things Ecosystems”, Sofia, Bulgaria, September 20-21, 2017, Open Access QED’17 UNESCO International Workshop eProceedings(in print)  http://unesco.unibit.bg/en/QED17
  • Savov T., V. Terzieva, K. Todorova.„ICT for Education – Current State in Bulgaria and Smart School of the Future”, QED’17 UNESCO International Workshop Children in the Digital Era, KoMЕIN Project Workshop: “Conceptual Modeling and Simulation of Internet of Things Ecosystems”, Sofia, Bulgaria, September 20-21, 2017, Open Access QED’17 UNESCO International Workshop eProceedings (in print)  http://unesco.unibit.bg/en/QED17
  • Vukarski, I. Panaytova, A. Shikalanov, “Comparative Analysis of Predictive Models Using Big Data Set and Data Mining Methods – Regression Analysis, Decision Trees and Neural Networks Through the Software Product SAS Enterprise Miner “ , QED’17 UNESCO International Workshop Children in the Digital Era, KoMЕIN Project Workshop: “Conceptual Modeling and Simulation of Internet of Things Ecosystems”, Sofia, Bulgaria, September 20-21, 2017, Open Access QED’17 UNESCO International Workshop eProceedings(in print) http://unesco.unibit.bg/en/QED17
  • Borovska, D. Ivanova, V. Kadurin, „Experimental Framework for the Investigations in Internet of Medical Imaging Things Ecosystem”, QED’17 UNESCO International Workshop Children in the Digital Era, KoMЕIN Project Workshop: “Conceptual Modelling and Simulation of Internet of Things Ecosystems”, Sofia, Bulgaria, September 20-21, 2017, Open Access QED’17 eProceedings (in print)
  • Borovska, “Big Data Analytics and Internet of medical Things Make Precision Medicine a Reality”, Plenary lecture 2, 18th International Conference on APPLIED COMPUTER and APPLIED COMPUTATIONAL SCIENCE (ACACOS ‘18), Paris, France, April 13-15, 2018 (accepted paper) Indexed in SCOPUS

Conference link: http://www.wseas.org/cms.action?id=16782
Plenary lecture Plamenka Borovska: http://www.wseas.org/wseas/cms.action?id=18800

  • Ivanova , “Early Detection of Thyroid Cancer based on Machine Learning in the Internet of Medical Imaging Things Ecosystem”, VII-th International Scientific Conference „EDUCATION, SCIENCE, INNOVATIONS“, 09-10 June 2017 Pernik, Bulgaria, DOI:10.13140/RG.2.2.14643.02088 (in print)

Conference link: http://epu.bg/bulgaria/conference/esi-2017
Scientific Programme: http://epu.bg/bulgaria/public/uploads/docs/Program%20ESI_2017.pdf

  • Вукарски И., “Изследване на вероятностни модели за аналзи на данни”, Втора студентска научно-практическа конференция „Информатиката, математиката и статистиката в съвременната икономическа реалност”, Варна, 20 октомври 2017 г., Сборник с доклади, стр. 71-79, Издателство „Наука и икономика”.

http://conference.ue-varna.bg/student/Conference_UE-Varna_Informatics_2017.pdf

Илия Вукарски – УниБИТ – София – Победител от тематично направление „Статистически методи и изследвания”: III-то място.

https://www.ue-varna.bg/bg/article.aspx?id=21030
http://conference.ue-varna.bg/student/

  • Вукарски И., „Изготвяне на статистически и вероятностни анализи, базирани на технологията на Oracle Бази от данни и Hadoop за извличане на знания от големи масиви от данни”, ХV-та НАЦИОНАЛНА НАУЧНА КОНФЕРЕНЦИЯ С МЕЖДУНАРОДНО УЧАСТИЕ на тема: „ОБЩЕСТВОТО НА ЗНАНИЕТО И ХУМАНИЗМЪТ НА ХХІ ВЕК”,  ПОСВЕТЕНА НА ДЕНЯ НА НАРОДНИТЕ БУДИТЕЛИ 1 НОЕМВРИ 2017г., УниБИТ, София (под печат)

https://www.unibit.bg/news/news-events/conf-10-2017

Conference link: http://www.compsystech.org/
Conference Program link: http://www.compsystech.org/docs/CST17-Programme.pdf

ACM DL: Searched for Svetozar Ilchev: https://dl.acm.org/results.cfm?query=Svetozar+Ilchev&Go.x=13&Go.y=7
Paper link: https://dl.acm.org/citation.cfm?id=3134329

  • Savov, V. Terzieva, K. Todorova, P. Kademova-Katzarova, “Contemporary Technology Support for Education”, CBU International Conference “Innovations in Science and Education”, Prague, Czech Republic, march 22-24, 2017, Vol 5 (2017): CBU International Conference Proceedings 2017, , vol. 5, pp. 802-806, ISSN 1805-997X (online ISSN 1805-9961) Indexed in Web of Science

Conference link: http://cbuic.cz/

Vol 5 (2017): CBU International Conference Proceedings 2017: http://ojs.journals.cz/distribution/CBUP%202017.pdf

Paper link: http://ojs.journals.cz/index.php/CBUIC/article/view/1029

  • Ilchev, S., Andreev, R. Ilcheva, Zl. “HybridNET Management and Sensor Data Acquisition System”. 7th International Conference on the Internet of Things (IoT 2017), 22-25 October, 2017, Linz, Austria, Conference Proceedings published by ACM, ISBN: 978-1-4503-5318-2, DOI: 10.1145/3131542.3140268.
    Conference Link: http://iot-conference.org/iot2017/program/ – Accepted posters.
  • Borovska D. Ivanova, “Development of PaaS using AWS and Terraform for Medical Imaging Analytics”, The 44th Conference Applications of Mathematics in Engineering and Economics (AMEE’18), June 8 – 13, 2018, Sozopol AMEE’18 Proceedings (in print), The conference post-proceedings are contracted and will be published in open access by the American Institute of Physics (AIP)
    Conference link: http://amee.tu-sofia.bg/
    Scientific program: http://amee.tu-sofia.bg/doc/program.pdf
  • Шойкова Е., Б. Жеков., „Концептуално моделиране на екосистеми за интернет на нещата”, Международен пътуващ семинар на УниБИТ “Съвременни измерения на европейското образователно и научно пространство”, 29 май – 05 юни 2017 г., Република Гърция.
  • Жеков Б., „Концептуално моделиране на екосистеми за интернет на нещата” – Презентация, Семинар с публична лекция организиран по проекта КоМЕИН за представяне на монографията „Концептуално моделиране на екосистеми за интернет на нещата”, 29.11.2017, 16 ч, УниБИТ 1, зала 106.
  • Николов Р., С. Денчев, Е. Шойкова, Е. Ковачева, Б. Жеков, “Интелигентен университет в Умен град”, Презентация, Информационен ден на Клъстер София град на знанието, проведен по време на изложението Smart Citiesот 27 до 29 март 2018 г. в гр. София, Интерекспо център, Зала 5, Сектор С24, Програма
  • Шойкова Е., „Подход за Kомпетентностно-базирано обучение по киберсигурност”, Презентация, КРЪГЛА МАСА “Взаимодействие за киберсигурност между наука, бизнес и държава”, 05 април 2018 г., УниБИТ, зала Тържествена, София.

В) СПИСЪК НА ПАТЕНТИТЕ, ИЗРАБОТЕНИ ВЪВ ВРЪЗКА С ПРОЕКТА – ПОЛЕЗНИ МОДЕЛИ (2)

  • Полезен модел „Индустриален Електронен Контролер с Разширяема Периферия“.

Заявител: Институт по Информационни и комуникационни Технологии-БАН. Изобретатели: Светозар Валериев Илчев, Румен Димов Андреев, Теодор Василев Савов – участници в проекта от страна на партньора ИИКТ-БАН. Рег. № 2807 U1, Дата на регистрация 01.11.2017 г., Публикуван за регистрация в бюлетин №10 на 31.10.2017, Срок на действие: 27.07.2027; http://www.bpo.bg/index.php?option=com_content&task=view&id=153&Itemid=355

  • Полезен модел „Водоустойчив електронен контролер за измерване на температура и влага“.

Заявител: Институт по Информационни и комуникационни Технологии-БАН. Изобретатели: Светозар Валериев Илчев, Румен Димов Андреев, Теодор Василев Савов – участници в проекта от страна на партньора ИИКТ-БАН. Рег. № 2832 U1, Дата на регистрация 12.12.2017 г., Публикуван за регистрация в бюлетин №11 на 30.11.2017, Срок на действие: 11.09.2027.

Монография

  • Боян Жеков, „Концептуално моделиране на екосистеми на интернет на нещата”, Монография, 2017, Издателтство „Пропелер“, София, Печатница: „Дейликонт“, ISBN:978-954-392-440-0

Г) ДОКТОРАНТИ С ТЕМИ СВЪРЗАНИ С ПРОЕКТА:

1. Илия Вукарски, докторант в УниБИТ, тема: „Подходи за извличане на знания от големи масиви от данни (Big Data) чрез използване на Hевронни мрежи” зачислен на 01.01.2016 г., Заповед № 667 от 21.12.2015 г.

Във връзка с проведените научни изследвания и публикации свързани с проекта КоМЕИН е актуализирана работната програма на докторанта и е постигнат напредък по следните теми:

  • Проучване и усвояване на принципите и начина на работа със софтуерните програми SAS Enterprise Miner и MATLAB;
  • Проучване и сравнителен анализ на основните методи за извличане на знания (Data Mining) от големи масиви от данни (Big Data) – Регресионен анализ (Regression analysis), Дърво на решенията (Decision Trees), Невронни мрежи (Neural Networks);
  • Имплементиране на основните методи за извличане на знания чрез софтуерната програма SAS Enterprise Miner, сравняване и анализиране на получените статистически характеристики от получените модели.

2. Добромир Дончев, докторант в УниБИТ, тема:” Гъвкави организации и подходи за разработка на системи”, зачислен на 01.10.2014 г.

Във връзка с проведените научни изследвания и публикации свързани с проекта КоМЕИН е актуализирана работната програма на докторанта и е постигнат напредък по следните теми:

  • Изследване на технологични и бизнес модели на екосистемите на Интернет на нещата.
  • Process Mining в софтуерната индустрия. Преглед на съвременните методи и подходи. Основни случаи на употреба и бизнес казуси.

3. Пейо Тодоров Христов, докторант в УниБИТ, тема:” Кибер сигурност на системи от ИНТЕРНЕТ НА НЕЩАТА”, зачислен на 20.10.2017 г.

4. Светлана Георгиева Сярова, докторант в УниБИТ, тема: „Технологии за мониторинг и управление на системи от ИНТЕРНЕТ НА НЕЩАТА”, зачислен на 20.10.2017 г.

5. Лиляна Гоцева Петкова, докторант в УниБИТ, тема: „Инкорпориране на сигурността при дизайн на софтуер”, зачислен на 20.10.2017 г.

6. Павлин Георгиев Кутинчев, докторант в ИИКТ-БАН, тема: „Методи за управление на информационната сигурност в различни компютърни среди”, зачислен на 01.10.2017 г.

7. Борис Иванов Зографов, докторант в ТУС, тема: „Интелигенти методи и системи за сигурност на екосистеми „Интернет на нещата ”, зачислен на 01.07.2017 г.

8. Владимир Василев Кадурин, докторант в ТУС, тема: „Методи и технологии за анализ на медицински изображения базирани на машинно обучение”, зачислен на 01.07.2017 г.

Д) ДИПЛОМНИ ПРОЕКТИ ПО ТЕМАТИКАТА НА ПРОЕКТА:

Повече от 20 дипоманти.