{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:03:15Z","timestamp":1760148195462,"version":"build-2065373602"},"reference-count":29,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,4,9]],"date-time":"2023-04-09T00:00:00Z","timestamp":1680998400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Bulgarian Ministry of Education and Science under the National Research Program \u201cSmart crop production\u201d approved by Decision of the Ministry Council \u2116866\/26.11.2020","award":["\u2116866\/26.11.2020","\u2116 KP-06-X36\/2"],"award-info":[{"award-number":["\u2116866\/26.11.2020","\u2116 KP-06-X36\/2"]}]},{"name":"Scientific Research Fund under Grant \u2116 KP-06-X36\/2, project BG PLANTNET \u201cEstablishment of National Information Network GenBank\u2014Plant genetic resources\u201d","award":["\u2116866\/26.11.2020","\u2116 KP-06-X36\/2"],"award-info":[{"award-number":["\u2116866\/26.11.2020","\u2116 KP-06-X36\/2"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Information"],"abstract":"<jats:p>The main task of the National Research Program \u201cSmart crop production\u201d, supported by the Ministry of Education and Science of Bulgaria and approved by the Council of Ministers, is the development of a regional data center to facilitate the work of farmers. The regional data center is part of the implementation of a smart crop production environment called ZEMEL which provides personal assistants supporting the work of farmers. The environment provides intelligent services for crop analysis and prevention and assists farmers in performing basic tasks related to crop production. The objective of the proposed article is to present the implementation of the architecture, infrastructure, and data architecture of a regional data center in the Plovdiv region. In order to clearly present the results of this work, which are the architectural and physical implementations of a regional data center and the storage of dynamic data and background knowledge, a methodology consisting of several steps is followed: the system infrastructure of the data center and the data architecture are discussed; one of the local pieces of infrastructure, implemented in the Institute of Plant Genetic Resources (IPGR) in the town of Sadovo in the Plovdiv region, is presented in detail, including the different types of sensors and their connection to the data center in wheat cultivation; the data repositories are discussed where dynamic data and background knowledge are stored. The paper pays special attention to background knowledge developed as ontologies for winter wheat cultivation. The results are summarized by drawing some conclusions and recommendations for the design of the local infrastructure of the center and the stored data to improve its performance.<\/jats:p>","DOI":"10.3390\/info14040233","type":"journal-article","created":{"date-parts":[[2023,4,10]],"date-time":"2023-04-10T03:19:54Z","timestamp":1681096794000},"page":"233","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Architecture and Data Knowledge of the Regional Data Center for Intelligent Agriculture"],"prefix":"10.3390","volume":"14","author":[{"given":"Emil","family":"Doychev","sequence":"first","affiliation":[{"name":"Department of Computer Systems, University of Plovdiv, 4000 Plovdiv, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7120-392X","authenticated-orcid":false,"given":"Atanas","family":"Terziyski","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stoyan","family":"Tenev","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0129-5002","authenticated-orcid":false,"given":"Asya","family":"Stoyanova-Doycheva","sequence":"additional","affiliation":[{"name":"Department of Computer Systems, University of Plovdiv, 4000 Plovdiv, Bulgaria"},{"name":"Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0043-8606","authenticated-orcid":false,"given":"Vanya","family":"Ivanova","sequence":"additional","affiliation":[{"name":"Department of Computer Systems, University of Plovdiv, 4000 Plovdiv, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pepa","family":"Atanasova","sequence":"additional","affiliation":[{"name":"Department of Computer Systems, University of Plovdiv, 4000 Plovdiv, Bulgaria"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Stoyanov, S., Todorov, J., Stoyanov, I., Tabakova-Komsalova, V., and Dukovska, L. (2021, January 28\u201329). ZEMELA\u2014An Intelligent Agriculture Platform. Proceedings of the Big Data, Knowledge and Control Systems Engineering\u2014BdKCSE\u20192021, Sofia, Bulgaria.","DOI":"10.1109\/BdKCSE53180.2021.9627248"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Stoyanov, S., Stoyanova-Doycheva, A., Glushkova, T., and Doychev, E. (2018, January 3\u20136). Virtual Physical Space\u2014An Architecture Supporting Internet of Things Applications. Proceedings of the 20th International Symposium on Electrical Apparatus and Technologies (SIELA), Bourgas, Bulgaria.","DOI":"10.1109\/SIELA.2018.8447156"},{"key":"ref_3","unstructured":"Stoyanov, S., Glushkova, T., Doychev, E., Stoyanova-Doycheva, A., and Ivanova, V. (2019). Cyber-Physical-Social Systems and Applications\u2014Part1, LAP LAMBERT Academic Publishing. Available online: https:\/\/www.lap-publishing.com\/catalog\/details\/store\/es\/book\/978-620-0-31825-1\/cyber-physical-social-systems-and-applications?search=978-620-0-31825-1."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Stoyanov, I., Stoyanova-Doycheva, A., Krasteva, I., and Uhr, Z. (2020, January 28\u201330). A Personal Assistant Supporting Agriculture Operators. Proceedings of the 2020 IEEE 10th International Conference on Intelligent Systems, IS 2020\u2014Proceedings, Varna, Bulgaria. Available online: https:\/\/ieeexplore.ieee.org\/document\/9199953.","DOI":"10.1109\/IS48319.2020.9199953"},{"key":"ref_5","unstructured":"Stoyanova-Doycheva, A., Doychev, E., Ivanova, V., Valkanov, V., and Tabakova-Komsalova, V. (2022, January 14\u201316). Event Ontology about Wheat Cultivation. Proceedings of the 7th IFAC Conference on Sensing, Control and Automation Technologies for Agriculture AGRICONTROL 2022, IFAC-PapersOnLine, Munich, Germany."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Stoyanova-Doycheva, A., Ivanova, V., Doukovska, L., Tabakova, V., Radeva, I., and Danailova, S. (October, January 30). Architecture of a Knowledge Base in Smart Crop Production. Proceedings of the 2021 International Conference Automatics and Informatics (ICAI), Varna, Bulgaria. Available online: https:\/\/ieeexplore.ieee.org\/abstract\/document\/9639874.","DOI":"10.1109\/ICAI52893.2021.9639874"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"3758","DOI":"10.1109\/JIOT.2018.2844296","article-title":"An Overview of Internet of Things (IoT) and Data Analytics in Agriculture: Benefits and Challenges","volume":"5","author":"Elijah","year":"2018","journal-title":"IEEE Internet Things J."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"718","DOI":"10.1109\/JAS.2021.1003925","article-title":"Internet of Things for the Future of Smart Agriculture: A Comprehensive Survey of Emerging Technologies","volume":"8","author":"Friha","year":"2021","journal-title":"IEEE\/CAA J. Autom. Sin."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Li, H., Li, S., Yu, J., Han, Y., and Dong, A. (2022, January 14\u201316). AIoT Platform Design Based on Front and Rear End Separation Architecture for Smart Agricultural. Proceedings of the 2022 4th Asia Pacific Information Technology Conference (APIT 2022), Virtual Event, Thailand.","DOI":"10.1145\/3512353.3512384"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"38:1","DOI":"10.1145\/3463575","article-title":"Scalable Privacy-preserving Geo-distance Evaluation for Precision Agriculture IoT Systems","volume":"17","author":"Yan","year":"2021","journal-title":"ACM Trans. Sen. Netw."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Postmes, J., Botteghi, N., Sirmacek, B., and Kamilaris, A. (2021, January 8\u201312). A System for Efficient Path Planning and Target Assignment for Robotic Swarms in Agriculture. Proceedings of the 11th International Conference on the Internet of Things (IoT \u201921), St. Gallen, Switzerland.","DOI":"10.1145\/3494322.3494352"},{"key":"ref_12","unstructured":"Rehman, A.U., and Shaikh, Z.A. (2011, January 13\u201315). ONTAgri: Scalable service-oriented agriculture ontology for precision farming. Proceedings of the International Conference on Agricultural and Biosystems Engineering, Amsterdam, The Netherlands."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"72","DOI":"10.1504\/IJMSO.2009.026256","article-title":"An ontology-driven system architecture for precision agriculture applications","volume":"4","author":"Kameas","year":"2009","journal-title":"Int. J. Metadata Semant. Ontol."},{"key":"ref_14","unstructured":"Manasawee, K., Rainer, M., Duc, D.N., and Nicolas, S. (2018, January 18\u201320). Ontology based approach for precision agriculture. Proceedings of the International Conference on Multidisciplinary Trends in Artificial Intelligence, Hanoi, Vietnam."},{"key":"ref_15","unstructured":"(2023, January 22). \u041aa\u043a \u043dac\u0442po\u0438\u0442\u044c p\u0435\u043f\u043b\u0438\u043aa\u0446\u0438\u044e \u0432 PostgreSQL. Available online: https:\/\/selectel.ru\/blog\/tutorials\/how-to-set-up-replication-in-postgresql\/."},{"key":"ref_16","unstructured":"(2023, January 22). PostgreSQL Streaming Replication vs Logical Replication. Available online: https:\/\/severalnines.com\/blog\/postgresql-streaming-replication-vs-logical-replication\/."},{"key":"ref_17","unstructured":"(2023, January 22). Postgres for Time-Series. Available online: https:\/\/www.timescale.com\/."},{"key":"ref_18","unstructured":"(2023, January 22). Mongodb. Available online: https:\/\/www.mongodb.com\/."},{"key":"ref_19","unstructured":"(2023, January 22). Meter. Available online: https:\/\/meter.ac\/gs\/agro\/sadovo-2022\/history.html."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Tenev, S., Jeliazkov, V., Jeliazkova, N., and Kochev, N. (2020). METER.AC: Live Open Access Atmospheric Monitoring Data for Bulgaria with High Spatiotemporal Resolution. Data, 5.","DOI":"10.3390\/data5020036"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"2017","DOI":"10.1007\/s11771-020-4427-6","article-title":"Isothermal diffusion of water vapor in unsaturated soils based on Fick\u2019s second law","volume":"27","author":"Liu","year":"2020","journal-title":"J. Cent. South Univ."},{"key":"ref_22","unstructured":"(2023, January 22). SensorTings API. Available online: https:\/\/www.ogc.org\/standards\/sensorthings."},{"key":"ref_23","unstructured":"(2023, January 22). FROST-Server. Available online: https:\/\/github.com\/FraunhoferIOSB\/FROST-Server."},{"key":"ref_24","unstructured":"Stoyanov, K., Rajcheva, C., and Cheshmidjiev, I. (2019). Determinant of Native and Foreign Plants in Bulgaria, Academic Publishing House of Agrarian University. Stage 1."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"D1003","DOI":"10.1093\/nar\/gkw755","article-title":"EURISCO: The European search catalogue for plant genetic resources","volume":"45","author":"Weise","year":"2017","journal-title":"Nucleic Acids Res."},{"key":"ref_26","unstructured":"(2023, January 22). FAO Global System. Available online: http:\/\/www.prokarstterra.bas.bg\/geo21\/2005\/5-05\/pp4-20-tabl1.htm."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Stoyanov, S., Stoyanova-Doycheva, A., Ivanova, V., Tabakova-Komsalova, V., Monov, V., and Radeva, Z. (October, January 30). An Event Model for Smart Agriculture. Proceedings of the 2021 International Conference Automatics and Informatics (ICAI), Varna, Bulgaria. Available online: https:\/\/ieeexplore.ieee.org\/document\/9639710.","DOI":"10.1109\/ICAI52893.2021.9639710"},{"key":"ref_28","unstructured":"(2023, January 22). JaCaMo. Available online: http:\/\/jacamo.sourceforge.net\/."},{"key":"ref_29","unstructured":"(2023, January 22). CArtAgo. Available online: https:\/\/cartago.sourceforge.net\/."}],"container-title":["Information"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2078-2489\/14\/4\/233\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T19:12:53Z","timestamp":1760123573000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2078-2489\/14\/4\/233"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4,9]]},"references-count":29,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2023,4]]}},"alternative-id":["info14040233"],"URL":"https:\/\/doi.org\/10.3390\/info14040233","relation":{},"ISSN":["2078-2489"],"issn-type":[{"type":"electronic","value":"2078-2489"}],"subject":[],"published":{"date-parts":[[2023,4,9]]}}}