Penerapan Model Pembelajaran Kooperatif Tipe Nht untuk Meningkatkan Hasil Belajar Pkn Siswa Kelas V SD Negeri 018 Ukui 1 Kecamatan Ukui

This research was motivated by lack of civics student learning outcomes. Low learningoutcomes are caused by: (a) students do not really follow civics and they talk to each othersawaktu teacher explains the lesson; (B) students are not active in learning; (C) if the teacherasking questions, very few students who answered; and (d) very few students were askedabout the learning that has not been understood, in addition to the learning activities in theclassroom dominated by teachers and children are much more powerful. This study aims toimprove learning outcomes civics through cooperative learning model NHT. This study is aclass action, which was conducted in 018 primary schools Ukui 1 Subdistrict Ukui. This studyfocused on students\u27 learning outcomes data civics. Based on the results of the study revealedthat the civic education learning outcomes of students has increased. This is evidenced by:Improved student learning outcomes at the preliminary data the number of students who passare 15 students (50%), increasing in the first cycle increased to 26 students (87%) and incycle II further increased up to 27 students (90 %)

Perancangan Suplai Tegangan Cadangan Untuk Mengantisipasi Supaya Baterai Ups Di Electric Room 5 Tidak Kehabisan Daya

Uninterruptable Power Supply (UPS) is an important component in the control system. It is useful for temporarily storing electrical energy. Energy storage is carried out in the UPS batteries. These batteries have a certain capacity according to the load requirements. UPS batteries only last an average of 2 hours if it does not get a supply voltage from the outside. Failure in the distribution of this voltage can cause exhaustion of the UPS batteries so some components in the control system can not work. To avoid this, the UPS system should get a backup voltage source. Backup voltage source is taken from an existing generator set. Making backup voltage is accompanied by a control system to ensure security in the event of transferring voltage from the main voltage source to the backup voltage. The control system used is conventional control system using the contactor. We hope it can transfer voltage from main to the backup voltage easily if there is problem with main voltage from main power. Key words: UPS, UPS battery, backup voltage, efficiency, safety