Electronic design automation software is a part of software learning. This study uses digital electronic circuit design software as learning media, namely, Electronic Design Automation (EDA), in the form of simulations and a guided inquiry learning model in higher engineering education. The device is a type of multimedia, because it involves graphics, animation, and text as external data. The software facilitates the learning process of cadets using the guided inquiry learning model. Given its accessibility, mobile learning has its own advantages. This study uses quantitative data with a type of quasi-experimental research. The sample consists of 100 cadets in the engineering study program. Results show that the model can improve the learning process of cadets in the air digital engineering program subject, in which the implementation of the model has been integrated into a special theme from the test scores and results of cadets. An effect is observed on the use of the EDA and guided inquiry model to the learning outcome and motivation of cadets in engineering education. The researchers concluded that the implementation of EDA and the guided inquiry model are effective. In addition, it provides benefits for practitioners and educators in improving the learning outcomes and motivation of cadets in engineering education.

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In the era of education 4.0 which is characterized by the use of digital technology, the learning process is not limited to space and time. This allows the implementation of distance learning as a springboard for a new educational model. The Surabaya Aviation Polytechnic is a vocational education institution under the supervision of Direktorat Kelaikudaraan dan Pengoperasian Pesawat Udara (DKPPU). DKPPU as the airworthiness and operation authority has issued letter regarding the online learning system method due to the covid pandemic. One of the determining factors for the success of learning process is the use of appropriate learning media. The choice of learning media influenced by the characteristics of the learner. Therefore, it is important to know the learning styles of students. Thus, this study aims to determine the learning style tendencies of Surabaya Aviation Polytechnic cadets to obtain recommendations for selecting the right media in distance learning. The data collection process involved 900 cadets who were asked to fill out a learning style questionnaire which would later be analyzed quantitatively. For data triangulation, interview sessions were also held for selected cadets. From the results of data analysis, it was concluded that the Surabaya Aviation Polytechnic cadets tended to have visual learning styles (54% or 485 cadets) and auditory (13% or 121 cadets). So, the media recommendations are audio/video tutorials, interactive multimedia, and simulator software. However, a total of 126 cadets do not know their learning styles. They need to be assisted in-class during class learning to increase achievement motivation.

Ethanol merupakan bahan bakar yang menghasilkan polutan yang rendah, bahan bakar yang aman, titik nyala etanol tiga kali lebih tinggi dibandingkan bensin dan emisi hidokarbon lebih sedikit. Ethanol 50 merupakan campuran premium 50% - Bioethanol 50% yang mempunyai nilai kalor lebih rendah dari premium. Pengaruh rasio kompresi pada kinerja mesin Bensin dengan 50% bioethanol gasoline bahan bakar dicampur diselidiki pada dinamometer rem air. Sifat bioetanol diukur berdasarkan pada American Society for Testing Material (ASTM) standar. Tujuan penelitian ini adalah mengetahui unjuk kerja mesin bensin yang menggunakan bahan bakar Ethanol E50 dengan pengaturan kompresi rasio dan durasi injeksi. Penelitian dilakukan pada Mesin Bensin 2 silinder 650 cc pada variable speed 2000 - 5000 rpm, metode yang digunakan adalah dengan mengatur kompresi rasio dan durasi injeksi. Kompresi rasio yang digunakan pada penelitian ini sebesar 9 , 10 dan 11. Sedangkan durasi injeksi dilakukan pada digunakan pada penelitian ini sebesar 6 ms, 6,6 ms dan 7,2 ms. Hasil penelitian ini menunjukkan bahwa melalui pengaturan kompresi rasio dan durasi injeksi pada mesin bensin berbahan bakar Ethanol 50, pada kompresi rasio 11 diperoleh kenaikan torsi, daya mengalami kenaikan sebesar 9 %, 4,08% terhadap E50 standar. dibandingkan dengan menggunakan bensin murni pada kompresi rasio 9,6. Sedangkan pengaruh rasio kompresi dan durasi injeksi dengan pada E50 dapat menaikan konsumsi bsfc 2,1% dari E50 Standar dan meningkatkan thermal efisiensi dengan 9,2%.

Purpose This study aims to support an institution to hold an online meeting or conference in the middle of social distancing, which is currently in effect. Design/methodology/approach In developing this application, rapid application design methodology is used. The implementation used HTML5 and PHP for the Web and MySQL for the database and Agora Software Development Kit. To evaluate the application, the authors had a black box testing method. Findings This application will support the participant registration process, validation, payment, providing a link to the workshop to the participant, token and room name to be able to join an online meeting or conference up to the process of giving a digital attendance certificate to participants or members participating in it. Originality/value An integrated Web application provides full services, starting from the registration process, payment, the conference meeting itself and certificate of attendance.