Bincang Sains dan Teknologi
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The IoT for Visualization of RC Circuits Transient Phenomena
Full text linkThe development of a device for visualizing the transient phenomena of RC circuits on smartphones has been carried out, utilizing the IoT platform of NodeMCU as a solution to restrictions on attendance in laboratory during COVID-19 pandemic. The quantity displayed is the voltage and electric current during charging or discharging capacitor. NodeMCU is coupled with a CD4066 to switch the process, and a 74HC4051 multiplexer to select the voltage or current value of capacitor. At the end there is an RC circuit connected to the switch and the multiplexer and also a voltage source. User commands are sent from the smartphone to the NodeMCU via the Blynk server. The software consists of a program uploaded in NodeMCU and a Blynk graphic interface arranged on smartphone. The system can work quite well, including controlling the charging and discharging capacitor. The visual appearance of voltage and current on smartphone screen quite similar with those of theory
Recent Trends in Fractal Antenna Research for In-body Communications
Full text linkFractal structure is a unique geometry that can be seen in many objects in nature, such as clouds, coastlines, DNA, trees, and even pineapple. This structure has manifold geometries, self-similarities, and space-filling properties. Due to these properties, fractal geometries are preferred to miniaturize an antenna in wireless communications. There are many cases that require a small compact antenna, including in-body communications. In this article, we present a review of the recent trends and advancements in fractal antenna research, especially in the miniaturization of implantable antennas for in-body communications. The review is derived from articles that are gathered from online libraries such as IEEE, PubMed, Nature, MDPI, Elsevier, and Google Scholar. As a result, we have collected more than 60 articles related to fractal-implantable antenna and in-body communications. Indeed, many researchers have proposed an implantable compact antenna with fractal geometries in the last decades. Fractal geometry allows a longer electrical length to be routed in a smaller area of the antenna. However, several things remain challenging in designing a fractal antenna, including bandwidth, fabrication complexity, and intercell interference
Critical Studies of Technology, Psychology, and Education on Online Games
Full text linknline games are developing rapidly and have an impact on children's behaviour. This study aims to explain the phenomenon of online game addiction from the perspective of psychology, technology, and education. The method is narratively qualitative—data obtained from online focus group discussions. The results of this study explain that online games today tend towards addictive behaviour. This situation is supported by the use of current technology in programming that allows the provision of varied features to increase the game's attractiveness. This addictive behaviour affects other behaviours that can affect the development of attitudes. This behaviour change affects learning performance. The teacher should adjust learning strategies in the digital era to adapt to children's new behaviours today related to online games
Optimasi Kekuatan Sumber Sekunder Multipol untuk Pengendalian Bising Aktif
Full text linkPengendalian bising di lingkungan industri-industri maupun pada wahana transportsi merupakan masalah yang selalu ingin dipecahkan oleh orang, sehingga fisibilitas komersial reduksi bising secara aktif sangat menjanjikan. Tulisan ini menjelaskan tentang penggunaan sumber sekunder multipol untuk pengendalian bising. Konsep ini dalam tahap selanjutnya dapat diimplementasikan, kekuatan sumber sekunder multipol yang diturunkan dengan menggunakan deret Taylor harus dioptimasi. Optimasi kekuatan sumber sekunder memberikan manfaat bahwa dengan jumlah sumber sekunder yang terbatas masih dapat diperoleh reduksi suara yang signifikan
Peluang Pemanfaatan Google Trends dalam Pencegahan Masalah Kesehatan Massal: Studi Kasus COVID-19
Full text linkPada artikel ini, penulis melakukan investigasi terhadap peluang pemanfaatan informasi dari mesin pencarian daring (dalam hal ini Google Trends), sebagai sumber data surveilans, untuk mengatasi masalah kesehatan berskala massif (khususnya Pandemi COVID-19). Ditemukan bahwa frekuensi pencarian Google Trends pada kata kunci yang diasosiasikan dengan gejala virus COVID-19 beberapa kali mengalami peningkatan pesat. Peningkatan frekuensi pencarian ini ternyata diikuti dengan peningkatan kasus infeksi virus COVID-19 di Indonesia. Kemudian, ditemukan peningkatan angka pencarian kata kunci yang berkaitan dengan pertimbangan seseorang dalam mengambil keputusan vaksinasi pada periode Januari 2021 hingga Maret 2022. Pada bulan Januari 2021 merupakan bulan dimana pemerintah mulai menggalakkan program vaksinasi masal di Indonesia. Dengan meningkatnya angka pemakaian internet, dan angka penggunaan mesin pencari daring di Indonesia, diharapkan informasi frekuensi pencarian kata kunci di mesin pencari seperti Google Trends dapat digunakan sebagai sumber informasi surveilans alternatif
Model HOT FIT dalam Manajemen Sistem Informasi
Full text linkOrganisasi ketika menerapkan sistem atau aplikasi untuk berbagai keperluan tentu berharap agar dapat digunakan secara optimum. Untuk memastikan kondisi ini, pengukuran tingkat ketersiapan pengguna menjadi penting. Kajian ini menjelaskan HOT FIT sebagai salah satu model untuk memahami aspek-aspek penting dalam penerapan aplikasi dan pemanfaatannya dalam pengukuran tingkat kesiapan. Ada beberapa kelebiha metode ini selain sederhana juga komprehensif. Kajian-kajian lain mendukung efektivitas metode ini. Indkator yang digunanaka dengan menggunakan metode HOT FIT dalam kajian ini dapat digunakan sebagai landasan proses pengukuran
Outreach Program, Virtual Reality, dan Berpikir Hipotetikal Deduktif: Laporan Kemajuan Pengembangan Aplikasi
Full text linkIntegrasi teknologi dan pendidikan serta pembelajaran difasilitasi dalam kelompok riset peneliti dengan pengembangan Desa Wisata Pendidikan (Eduwisata) sebagai outreach berbasis teknologi era digital. Pengintegrasian ini telah dirintis peneliti bersama tim dengan mengembangkan berbagai teknologi (IoT, AR, VR) yang diintegrasikan dalam pembelajaran baik di kelas maupun luar kelas (outreach program). Hanya saja dalam mencapai target pengembangan outreach berbasis teknologi masih terkendala pada aspek kajian VR. VR ini terkait dengan isu global ecosystem. Dalam pembelajaran, VR ini dapat menghadirkan hewan sesuai habitat aslinya secara virtual dengan menggunakan Oculus. Integrasi aplikasi ini dengan strategi pembelajaran tertentu seperti hipotetikal deduktif dapat mendorong peningkatan keterampilan berpikir kritis
Modelling Ontology of Craft Convection as Small and Medium Enterprises
Full text linkKnowledge elicitation is a process to obtain and transfer knowledge (that is, for example, accumulated inside the minds of experts in a certain domain) from humans to abstract and effective representations, to organize, model, and ultimately, communicate it in such form that is easier to understand and utilized through formal representation. Knowledge elicitation uses ontology approach so that knowledge representation can be presented in knowledge management system. This knowledge will be utilized mainly in Craft Convection Small Medium Enterprises (SMEs). Ontology as an instrument to represent knowledge has been studied and applied in various fields such as information science, knowledge engineering, artificial intelligence, or digital library. In the field of ontology and design, ontology can be applied in knowledge sharing. Using methontology approach, ontology modeling and implementation are developed to identify patterns and concepts of knowledge related to Craft Convection SMEs