1,720,954 research outputs found
IMPLEMENTASI ALGORITMA K-NEAREST NEIGHBOR PADA SISTEM PEMANTAU SUHU DAN KELEMBAPAN RUANG SERVER MENGGUNAKAN PROTOKOL MQTT BERBASIS IOT
Get PDFPemantauan kondisi ruang server sangat penting untuk mencegah kegagalan sistem, terutama terkait suhu dan kelembapan. Penelitian ini mengacu pada standar ruang server di Indonesia, yaitu suhu 21°C - 23°C dan kelembapan 45% - 60%. Menggunakan mikrokontroler ESP32 dan sensor DHT22, data dikirim melalui protokol MQTT dengan broker Mosquitto pada server lokal, dan dashboard pengguna dibangun dengan Node-Red. Data latih mencakup referensi standar dan data dummy untuk meningkatkan akurasi klasifikasi. Hasil pengujian menunjukkan selisih 7.13°C pada suhu dan 21.22% pada kelembapan setelah pendingin ruangan dimatikan selama 1 jam. Klasifikasi menunjukkan 100% Normal saat pendingin hidup dan 100% Tidak Normal saat mati. Pengujian waktu eksekusi dengan access point dan hotspot Wi-Fi pada smartphone menunjukkan tidak ada perubahan. Waktu pembacaan sensor 4 ms, waktu eksekusi KNN 22 ms, dan pengiriman ke server lokal MQTT 14 ms, semuanya kurang dari 1 detik
Sistem Pemantau Kenyamanan Ruang Kelas Menggunakan Protokol Mqtt dan Http dengan Notifikasi Telegram Berbasis Internet Of Things
Get PDFPendidikan berperan penting dalam pembangunan bangsa dan peningkatan kualitas hidup masyarakat. Sekolah sebagai institusi pendidikan formal membutuhkan lingkungan belajar yang sehat dan nyaman untuk mendukung proses belajar-mengajar. Salah satu faktor utama yang memengaruhi kenyamanan belajar adalah kualitas udara. Penelitian ini bertujuan untuk memantau kualitas udara di ruang kelas SD Sukma Bangsa Bireuen, Provinsi Aceh, menggunakan konsep Internet of Things (IoT) dengan membandingkan dua protokol komunikasi, yaitu MQTT dan HTTP. Parameter udara yang dipantau meliputi suhu, kelembapan, CO, CO₂, PM1, dan PM2.5. Hasil pengujian pada 10 sampel data menunjukkan bahwa protokol MQTT memiliki rata-rata waktu pengiriman data sebesar 6,2 milidetik, sedangkan protokol HTTP memerlukan rata-rata waktu 267 milidetik, menunjukkan bahwa MQTT sekitar 97,7% lebih cepat. Pada sesi pertama (pagi–siang), terjadi kenaikan suhu hingga 1,7°C, penurunan kelembapan sekitar 5%, sementara kadar CO dan CO₂, serta konsentrasi PM1 dan PM2.5 masih dalam batas aman. Sesi kedua (malam) menunjukkan penurunan suhu sekitar 2°C, kenaikan kelembapan sebesar 8%, dan peningkatan kadar CO₂ hingga 22,5% karena minimnya sirkulasi udara. Dashboard yang dibangun menggunakan Node-RED dapat menampilkan data secara real-time dari kedua protokol dengan lancar. Selain itu, sistem juga diintegrasikan dengan fitur notifikasi melalui Telegram, yang mampu mengirimkan peringatan otomatis setiap 10 menit jika parameter melebihi ambang batas, serta melayani permintaan data secara langsung dari pengguna. Dengan efisiensi pengiriman data, fleksibilitas arsitektur, dan kemampuan notifikasi real-time, sistem ini tidak hanya efektif untuk lingkungan kelas, tetapi juga berpotensi direplikasi pada ruang tertutup lainnya seperti laboratorium, ruang guru, dan ruang publik lainnya di lingkungan pendidikan.
Abstract
Education plays an essential role in national development and improving the quality of life in society. Schools, as formal educational institutions, require a healthy and comfortable learning environment to support the teaching and learning process. One of the main factors affecting learning comfort is air quality. This study aims to monitor air quality in a classroom at SD Sukma Bangsa Bireuen, Aceh Province, using the Internet of Things (IoT) concept by comparing two communication protocols: MQTT and HTTP. The monitored air parameters include temperature, humidity, CO, CO₂, PM1, and PM2.5. Test results from 10 data samples show that the MQTT protocol achieved an average data transmission time of 6.2 milliseconds, while the HTTP protocol required an average of 267 milliseconds, indicating that MQTT is approximately 97.7% faster. During the first session (morning to afternoon), there was an increase in temperature of up to 1.7°C and a decrease in humidity of about 5%, while CO and CO₂ levels and PM1 and PM2.5 concentrations remained within safe limits. The second session (evening) showed a temperature drop of about 2°C, an increase in humidity by 8%, and a rise in CO₂ levels by up to 22.5% due to limited air circulation. The dashboard built using Node-RED successfully displayed real-time data from both protocols. Additionally, the system was integrated with a Telegram notification feature that could automatically send alerts every 10 minutes if any parameter exceeded the threshold, as well as respond to real-time data requests from users. With efficient data transmission, flexible architecture, and real-time notification capabilities, the system is not only effective for classroom environments but also has the potential to be replicated in other enclosed spaces such as laboratories, teacher rooms, and public areas within educational institutions.Pendidikan berperan penting dalam pembangunan bangsa dan peningkatan kualitas hidup masyarakat. Sekolah sebagai institusi pendidikan formal membutuhkan lingkungan belajar yang sehat dan nyaman untuk mendukung proses belajar-mengajar. Salah satu faktor utama yang memengaruhi kenyamanan belajar adalah kualitas udara. Penelitian ini bertujuan untuk memantau kualitas udara di ruang kelas SD Sukma Bangsa Bireuen, Provinsi Aceh, menggunakan konsep Internet of Things (IoT) dengan membandingkan dua protokol komunikasi, yaitu MQTT dan HTTP. Parameter udara yang dipantau meliputi suhu, kelembapan, CO, CO₂, PM1, dan PM2.5. Hasil pengujian pada 10 sampel data menunjukkan bahwa protokol MQTT memiliki rata-rata waktu pengiriman data sebesar 6,2 milidetik, sedangkan protokol HTTP memerlukan rata-rata waktu 267 milidetik, menunjukkan bahwa MQTT sekitar 97,7% lebih cepat. Pada sesi pertama (pagi–siang), terjadi kenaikan suhu hingga 1,7°C, penurunan kelembapan sekitar 5%, sementara kadar CO dan CO₂, serta konsentrasi PM1 dan PM2.5 masih dalam batas aman. Sesi kedua (malam) menunjukkan penurunan suhu sekitar 2°C, kenaikan kelembapan sebesar 8%, dan peningkatan kadar CO₂ hingga 22,5% karena minimnya sirkulasi udara. Dashboard yang dibangun menggunakan Node-RED dapat menampilkan data secara real-time dari kedua protokol dengan lancar. Selain itu, sistem juga diintegrasikan dengan fitur notifikasi melalui Telegram, yang mampu mengirimkan peringatan otomatis setiap 10 menit jika parameter melebihi ambang batas, serta melayani permintaan data secara langsung dari pengguna. Dengan efisiensi pengiriman data, fleksibilitas arsitektur, dan kemampuan notifikasi real-time, sistem ini tidak hanya efektif untuk lingkungan kelas, tetapi juga berpotensi direplikasi pada ruang tertutup lainnya seperti laboratorium, ruang guru, dan ruang publik lainnya di lingkungan pendidikan.
Abstract
Education plays an essential role in national development and improving the quality of life in society. Schools, as formal educational institutions, require a healthy and comfortable learning environment to support the teaching and learning process. One of the main factors affecting learning comfort is air quality. This study aims to monitor air quality in a classroom at SD Sukma Bangsa Bireuen, Aceh Province, using the Internet of Things (IoT) concept by comparing two communication protocols: MQTT and HTTP. The monitored air parameters include temperature, humidity, CO, CO₂, PM1, and PM2.5. Test results from 10 data samples show that the MQTT protocol achieved an average data transmission time of 6.2 milliseconds, while the HTTP protocol required an average of 267 milliseconds, indicating that MQTT is approximately 97.7% faster. During the first session (morning to afternoon), there was an increase in temperature of up to 1.7°C and a decrease in humidity of about 5%, while CO and CO₂ levels and PM1 and PM2.5 concentrations remained within safe limits. The second session (evening) showed a temperature drop of about 2°C, an increase in humidity by 8%, and a rise in CO₂ levels by up to 22.5% due to limited air circulation. The dashboard built using Node-RED successfully displayed real-time data from both protocols. Additionally, the system was integrated with a Telegram notification feature that could automatically send alerts every 10 minutes if any parameter exceeded the threshold, as well as respond to real-time data requests from users. With efficient data transmission, flexible architecture, and real-time notification capabilities, the system is not only effective for classroom environments but also has the potential to be replicated in other enclosed spaces such as laboratories, teacher rooms, and public areas within educational institutions
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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