{"title":"Design and implementation of a LoRa-based system for warning of forest fire","authors":"Tuyen Phong Truong, Quang Thien Tran, Phat Tan Le","doi":"10.12928/telkomnika.v21i5.24712","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24712","url":null,"abstract":"This paper presents the design and implementation of a forest fire monitoring and warning system based on long range (LoRa) technology, a novel ultra-low power consumption and long-range wireless communication technology for remote sensing applications. The proposed system includes a wireless sensor network that records environmental parameters such as temperature, humidity, wind speed, and carbon dioxide (CO 2 ) concentration in the air, as well as taking infrared photos.The data collected at each sensor node will be transmitted to the gateway via LoRa wireless transmission. Data will be collected, processed, and uploaded to a cloud database at the gateway. An Android smartphone application that allows anyone to easily view the recorded data has been developed. When a fire is detected, the system will sound a siren and send a warning message to the responsible personnel, instructing them to take appropriate action. Experiments in Tram Chim Park, Vietnam, have been conducted to verify and evaluate the operation of the system.","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shahir Fleyeh Nawaf, Lujain S. Abdulla, Abdulmutalib A-Wahab Husein
{"title":"Reflector antenna design in different frequencies using frequency selective surfaces","authors":"Shahir Fleyeh Nawaf, Lujain S. Abdulla, Abdulmutalib A-Wahab Husein","doi":"10.12928/telkomnika.v21i5.25016","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.25016","url":null,"abstract":"In this study, it is aimed to obtain two different asymmetric radiation patterns obtained from antennas in the shape of the cross-section of a parabolic reflector (fan blade type antennas) and antennas with cosecant-square radiation characteristics at two different frequencies from a single antenna. For this purpose, firstly, a fan blade type antenna design will be made, and then the reflective surface of this antenna will be completed to the shape of the reflective surface of the antenna with the cosecant-square radiation characteristic with the frequency selective surface designed to provide the characteristics suitable for the purpose. The frequency selective surface designed and it provides the perfect transmission as possible at 4 GHz operating frequency, while it will act as a band-quenching filter for electromagnetic waves at 5 GHz operating frequency and will be a reflective surface. Thanks to this frequency selective surface to be used as a reflective surface in the antenna, a fan blade type radiation characteristic at 4 GHz operating frequency will be obtained, while a cosecant-square radiation characteristic at 5 GHz operating frequency will be obtained .","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135063727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Wavelet-based sensing technique in cognitive radio network","authors":"M. H. Mohamad, Nurusolihah Zamri, N. K. Ibrahim","doi":"10.12928/telkomnika.v21i5.24678","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24678","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47312512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design and simulation an optimal enhanced PI controller for congestion avoidance in TCP/AQM system","authors":"Y. A. Mohammed, Layla H. Abood, N. N. Kadhim","doi":"10.12928/telkomnika.v21i5.24872","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24872","url":null,"abstract":"ABSTRACT","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49073043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Olzhas Tasmagambetov, Y. Seitkulov, R. Ospanov, B. Yergaliyeva
{"title":"Fault-tolerant backup storage system for confidential data in distributed servers","authors":"Olzhas Tasmagambetov, Y. Seitkulov, R. Ospanov, B. Yergaliyeva","doi":"10.12928/telkomnika.v21i5.25305","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.25305","url":null,"abstract":"ABSTRACT","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66290868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Big data cloud-based recommendation system using NLP techniques with machine and deep learning","authors":"H. K. Omar, M. Frikha, A. Jumaa","doi":"10.12928/telkomnika.v21i5.24889","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24889","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46661148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efficient combined fuzzy logic and LMS algorithm for smart antenna","authors":"M. Miry, A. H. Mary","doi":"10.12928/telkomnika.v21i5.24370","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24370","url":null,"abstract":"ABSTRACT","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45526664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impact of CuS counter electrode calcination temperature on quantum dot sensitized solar cell performance","authors":"Le Thi Ngoc Tu, H. Tung","doi":"10.12928/telkomnika.v21i5.25118","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.25118","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48370943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electroencephalography-based brain-computer interface using neural networks","authors":"Pham Van Huu Thien, Nguyen Ngoc Son","doi":"10.12928/telkomnika.v21i5.24839","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24839","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47701608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}