The advancement in science and technology in the 21st Century necessitates improving critical thinking skills in students. Implementing digital technology such as interactive multimedia in the learning process can encourage quality learning and teaching. This study aims to create Android-based interactive multimedia that will help students improve their critical thinking skills in learning matters. This research aims to develop android-based interactive multimedia to enhance critical thinking skills in learning matters. This research employed a developmental method that included analysis, design, development, implementation, and one group pretest-posttest to assess students' critical thinking skills. The participants were 30 students from Private Junior High schools in Bandung Barat. The instruments used were the expert's judgment rubric, students' questionnaire, and objective test. With an overall score of 88.25%, the experts' judgment score was classified as very good. Moreover, the average score of students' impressions was 84.56%, classified as very good. Based on the data analysis, the value of g is 0.52, which is classified as a medium enhancement. This finding indicates that students' critical thinking skills improve after applying Android-based interactive multimedia.
Pesantren Darul Bayan di bawah naungan pembinaan Yayasan Darul Bayan Pembangun Peradaban terletak daerah di Desa Cilayung Kecamatan Jatinangor Kabupaten Sumedang Jawa-Barat. Luas tanah yang dimiliki pesantren Darul Bayan sekitar 3000 (tiga ribu) meterpersegi, Di samping kegiatan kepesantrenan, Yayasan Darul Bayan Pembangun Peradaban membuat sekolah non formal (madrasah alquran) yaitu mulai dari tingkat SD sampai SMA, Jumlah santri kurang lebih ada 250 orang putra-putri, dua keluarga yang menetap, dan 20 orang guru. Pemenuhan energi listrik untuk kebutuhan sehari-hari di pesantren ini bersumber dari PLN dengan total daya sebesar 4400 VA. Biaya bulanan untuk penggunaan listrik rata-rata mencapai Rp 1.500.000 (satu setengah juta rupiah) tiap bulan. Biaya sebesar itu tentu sangat memberatkan, sebab tidak semua santri berkecukupan untuk membayar sumbangan pembinaan pendidikan (SPP) sebagai sumber biaya operasional bulanan. Oleh karena itu perlu ada upaya untuk meringankan biaya yang ditanggung pesantren. Masalah lain adalah keandalan listrik atau gangguan terputusnya saluran dan drop tegangan, serta sistem penerangan gerbang depan serta penerangan bilik di pesantren belum memadai. Untuk membantu meringankan biaya bulanan dan meningkatkan keandalan kelistrikan, maka dipasang Pembangkit Lisrik Tenaga Surya (PLTS). Sistem tersebut meliputi panel sel surya (gabungan beberapa modul sel surya), baterai, inverter, monitoring-kontroler, saklar, stop kontak, sensor photocell, dan pelengkap lainnya. Panel sel surya akan mengalirkan energi menuju baterai pada siang hari, pada malam hari lampu dapat dinyalakan secara otomatis maupun manual. Power House atau Pusat Daya PLTS akan dipasang di bangunan utama pondok pesantren, sehingga pemantauan PLTS akan lebih mudah.
Train speed control is a vital part of train protection to build safe movement at an operation track. There is a special condition of track that needs more attention to protect the train, for example in slope area. Moreover, in developing country with vandalism problem, it requires to install minimalized equipment on the trackside. In addition, in tropical country, on tracksides it will be potentially pooling water that influences to the performance of trackside equipment. To address these problems, we propose the train speed control for slope area using infrared system. By installing on the pole configuration, the system offers a less challenging, economically sensible, minimalized installation of equipment on the trackside and reliability for heavy rain environment. This paper concentrates on the controlling train speed and measurement performance evaluation in slope area. The proposed train speed control system can monitor and control the speed in sloping area with maximum 3.6% and controlled speed about 20 km per h.
In this research would try to give contribution for researchers or academics about simulation of the railway signaling system. The model of railway system was built using miniature of track and train model. Small LED was used as a lamp signal. Point machine was moved by servo motor controlled by Arduino Nano. The last, track circuit was replaced by proximity sensor using IR transceiver. The result showed that the simulation could do some basic task which is occurred in railway signaling system. The design of system was created by FSM (Finite State Machine) method which would be implemented in PLC (Programmable Logic Controller). It consists of state diagram, declaration of inputs and outputs, generated logic equation, and finally is the written code in ladder logic diagram. Set route test also has been tried successfully and the lamp signal showed the color aspect correctly.
A prototype of rail turnout motor measurement device was designed based on motor torque inspection, using a load cell sensor. A rail turnout is a branched railroad construction to control the railroad track that controlled by turnout motor, therefore it is one of important railways elements for guiding and directing the train to not derailment or collide with another train. The device was made in order to check the reliability of turnout machine in railway systems. In Indonesia, currently the inspection of turnout machine was done manually and still not so efficient in term of the process. Here, we built a portable system device consisted of load sensor, processed with a microcontroller and the data were recorded and displayed in a Liquid Crystal Display (LCD). The device was tested directly to a turnout machine on the railroad at Kiara Condong Station, Bandung, Indonesia. The measured results showed that the device working properly and the average pulling strength of turnout machine at the station was 256.6 ± 2.88 kg.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.