Pandemi SARS-CoV-2 telah memberikan dampak terhadap seluruh aspek kehidupan manusia, semua kegiatan yang semula dilakukan secara luring kini telah mengalami digitalisasi sehingga semua kegiatan di lakukan secara daring salah satunya di sektor pendidikan. Dengan berubahnya sektor pendidikan yang kini secara penuh dilaksanakan secara daring telah memunculkan berbagai masalah di antara pelajar maupun tenaga pendidik seperti guru dan dosen. Masalah yang sering muncul ialah kendala sinyal atau hilangnya sinyal ketika sedang melakukan kegiatan pembelajaran secara daring. Penulis melakukan penelitian untuk menguji seberapa baik jaringan dari provider Tri(PT.Hutchison 3 Indonesia) di desa Cibodas kecamatan Bungursari kabupaten Purwakarta. Hasil analisis kami menunjukkan sebanyak 61.1% dari 18 responden mengeluhkan koneksi internet yang lambat pada provider yang digunakan. Analisis kami juga menunjukkan bahwa provider Tri di desa Cibodas kecamatan Bungursari kabupaten Purwakarta memiliki rata-rata kecepatan download sebesar 0.26 Mb/s,  rata-rata kecepatan upload sebesar 1.77 Mb/s, jitter sebesar 85 ms dan latency sebesar 35 ms. Sementara selama pengujian dengan metode drive test hanya mendapatkan sinyal dari 1 eNodeB dengan ID 988 dan terdapat sebanyak 882 buah sample/titik dengan rata-rata RSSI/RSRP sebesar -120 dBm.

Operations in the industry today use induction motors. There are several types of induction motors, one of which is a 3-phase induction motor. In the use of a 3-phase induction motor, there are several problems at the beginning, one of which is that there is a current surge in the starting received by the windings or rotor of a 3-phase induction motor which will cause damage to the motor windings. In previous research, research has been carried out to reduce electric starting spikes in 3 phase motors by lowering the frequency in a study entitled "Adjusting the Speed ​​of a 3 Phase Induction Motor by Changing the Frequency Using the ALTIVAR 12P Inverter" it was found that the frequency of the regulated voltage was low and stable to minimize inrush current in 3-phase motor starting. Therefore, research was conducted on a system that can reduce these problems, namely the use of a star-delta system on a 3-phase motor to reduce electrical starting spikes in a 3-phase motor. In this study, the electric current value was 0.59 A, the star-circuit voltage value was 219.65 V, and the short-circuit current value was 1.01 A.

Abstrak—Tujuan dari penelitian ini adalah untuk mengembangkan sistem pemantauan banjir dan peringatan dini secara real-time. Teknik penginderaan ultrasonic sebagai RADAR(Radio Detection and Ranging)  banyak digunakan di berbagai bidang teknik dan ilmu dasar. Salah satu keuntungan dari penginderaan ultrasonik adalah kemampuannya yang luar biasa untuk menyelidiki di dalam objektif secara non-destruktif karena ultrasonik dapat merambat melalui berbagai jenis media termasuk padatan, cairan dan gas. Studi ini hanya berfokus pada deteksi ketinggian air dan sistem peringatan dini (melalui situs web) yang memperingatkan lembaga dan individu terkait akan potensi kejadian banjir. Selain itu, sistem inquiry juga dimasukkan dalam penelitian ini agar lebih interaktif dimana individu dalam masyarakat dapat menanyakan ketinggian air aktual dan status daerah atau lokasi yang diinginkan terkena banjir melalui web. Kajian ini bertujuan untuk membantu warga agar siap dan berpengetahuan ketika terjadi banjir. Inovasi studi ini berada pada pemanfaatan ESP 32, sensor ultrasonic dan monitoring melalui web dalam membantu pemangku kepentingan untuk mengurangi korban terkait banjir. Artikel ini bertujuan untuk membantu daerah-daerah rawan banjir yang umum terjadi.

The performance of a solar panel module is strongly influenced by its orientation and tilt angle. Tests have been carried out to track variations in the performance of the solar panel module and electrical parameters at various angles of inclination in the conditions of Karawang and Bogor. There are two experimental modes: 1) a varying slope module under a constant irradiance level, 2) a varying irradiation intensity at the optimal tilt setting. For the former schematic, the irradiation levels were carried out at 2 different locations, and for the later setup, the angle of inclination of the module was varied from 90° and 180° by using a single axis tracer At 90° tilted angle in Karawang test place at rest condition, morning experiment give the result of 5,69V on average while in Bogor the experiment gives 5,46V on average. At 180° tilted angle in Karawang test place at rest condition, morning experiment give the result of 5,49V on average while in afternoon experiment afternoon 3.026V on average. In Bogor test place morning experiment give solar panel 5,2V on average and 3,33V at afternoon experiment. In the electrical parameters of the module, the open circuit voltage, short circuit current, maximum power point voltage and maximum power point current decrease substantially with increasing slope angle, while the charge factor decreases somewhat gradually. Tests in both Karawang and Bogor in the afternoon and afternoon confirmed that the optimal tilt angle on cloudy on  with UV index between 1-2 in the morning and 3-4 in the afternoon on average is 180° tilted and directing the solar panel module at this angle will maximize the captured solar energy and thereby improve its performance.

Garbage is an unavoidable part of everyday life. Everyone has to take out the trash. Therefore, waste is a major source of problems that directly affect the environment. Moreover, waste management in Indonesia is definitely not good. Most of the waste is thrown away without being sorted. This also ultimately contributes to the complexity of the waste problem. This research was conducted to determine the perception of the waste management system in the village of Lambangsari Bekasi by utilizing intelligent robots based on IoT (Internet of Things). The survey method used is an online questionnaire filled out by 100 people from the age range of 20-25 years. Respondents consist of students, students to workers. The collected data were analyzed using descriptive statistical analysis techniques. The results obtained from the analysis data are that most of the waste management in Indonesia is not appropriate because of the very low knowledge of understanding waste management by utilizing the latest technology, one of which is IoT-based intelligent robots. In addition, the government also does not educate the public about the importance of sorting waste by type and also does not socialize the movement to dispose of waste.