In this paper, a virtual laboratory is used for digital systems practice courses which are carried out online. The research step begins with designing a virtual laboratory portal with Moodle E-Learning software to provide practice management services. The trial was carried out by running an online collaborative practice by applying the Breadboard simulator and the TeamViewer application. The research subjects were 20 students of the Informatics Engineering study program. The data collection instrument used a student perception questionnaire on the instructional aspect and a student perception questionnaire on the appearance of the learning model and ease of operation. Descriptive analysis was carried out using perception level criteria. The results showed that the virtual laboratory-based Digital System practice learning model had a positive perception of the instructor aspect, the learning model display aspect and ease of operation as well as increasing student motivation in carrying out practical activities

<p class="abstrak" align="left"><strong>Abstrak</strong></p><p>Tujuan penelitian adalah untuk mengetahui evaluasi pembelajaran <em>online</em> berbasis Moodle pada mata kuliah Sistem Operasi dari aspek: (1) Kemampuan mahasiswa memakai Moodle; (2) Kemampuan dosen memakai Moodle; dan (3) Keaktifan komunikasi mahasiswa dan dosen dalam penggunaan Moodle pada mata kuliah Sistem Operasi. Metode penelitian yaitu deskriptif. Subjek penelitian adalah mahasiswa dan dosen yang terkait dengan mata kuliah Sistem Operasi. Teknik pengumpulan data menggunakan: (1) Angket, untuk memperoleh informasi dari mahasiswa; (2) Dokumentasi, yaitu menganbil data <em>log</em> pada Moodle; dan (3) Wawancara, untuk memperoleh data dari dosen pengampu berkaitan dengan kemampuan dan aktivitas. Teknik analisis data menggunakan analisis deskriptif. Hasil penelitian menunjukkan bahwa: (1) Mahasiswa mampu menggunakan fitur seperti mengunduh materi, mengunggah tugas, <em>quiz</em> secara <em>online</em>; (2) Dosen sudah mampu menggunakan fitur dasar Moodle; dan (3) keaktifan mahasiswa dan dosen masih kurang karena belum optimal menggunakan komunikasi melalui fitur forum dan <em>chatting </em>yang ada di Moodle.</p><p> </p><p class="StyleAuthorBold"><strong><em>Abstract</em></strong></p><p><em>The purpose of this research was to determine the evaluation of Moodle-based online learning in the Operating Systems course in aspects of: (1) The ability of students to use Moodle; (2) The ability of lecturers to use Moodle; and (3) The activeness of student and lecturer communication in the use of Moodle in the Operating Systems course. The research method was descriptive. Research subjects were students and lecturers related to the Operating Systems course. Data collection techniques used: (1) Questionnaire, to obtain information from students; (2) Documentation, which is to take log data on Moodle; and (3) Interviews, to obtain data from supporting lecturers related to abilities and activities. Data analysis techniques used descriptive analysis. The results showed that: (1) Students were able to use features such as downloading material, uploading assignments, quizzes online; (2) Lecturers have been able to use the basic features of Moodle; and (3) the activeness of students and lecturers is still lacking because it is not yet optimal in using communication through the forum and chat features available in Moodle.</em></p>

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The main problem in learning power electronics course is that there are many things that require imagination to understand the principles of power converters. Thereto, learning that occurs is not flexible, which only occurs in the classroom, even though students need a lot of time to understand the material and need media that is able to visualize through illustrations, text, pictures, audio. This paper proposes the development media in the form of Power Electronics Learning Interactive Multimedia Courses which were developed using the help of the Adobe Flash application, so it is hoped that with this media students can learn the material of DC-DC converters and AC-AC converters easily, and can learn flexibly. Therefore, this study aims to develop a learning media that can overcome these problems, in the form of Interactive Multimedia Learning for Power Electronics Courses, which was developed using the help of Adobe Flash applications. The research method used refers to the Instructional Development Institute (IDI) model. The results of this study indicate that the Interactive Multimedia Learning for Power Electronics Course can be successfully used in learning. Meanwhile, the novelty of these findings makes a different contribution from previous interactive multimedia learning, because through media development you can learn with multimedia elements that describe DC-DC converters and AC-AC converters online so that learning becomes more flexible.

Kemajuan internet saat ini berkembang dengan pesat, orang-orang masa ini tidak terlepas dengan internet. Kemajuan internet menyebabkan dunia perdagangan berkembang, saat ini konsumen banyak berbelanja online dimana mereka tidak harus datang ke toko untuk membeli barang yang diinginkannya, konsumen toko online juga didominasi oleh generasi milenial. Marketplace Shopee berada diurutan pertama ranking download aplikasi di appstore dan playstore. Shopee juga unggul dari segi produk terlaris ditoko online yaitu produk pakaian atau fashion. Permintaan pakaian di Shopee sebesar 59 persen lebih banyak dibandingkan dengan marketplace lainnya. Tujuan penelitian ini yaitu untuk mengetahui pengaruh harga, pendapatan, selera, dan diskon terhadap permintaan pakaian di marketplace Shopee. Metode yang digunakan dalam penelitian ini adalah Ordinary Least Square (OLS) dengan analisis regresi berganda yang dibantu program aplikasi statistik yaitu Eviews 9. Responden penelitian ini merupakan generasi milenial yang lahir tahun 1980 hingga 2000 yang belanja pakaian di marketplace Shopee di kawasan Universitas Nahdlatul Ulama Sumatera Barat. Untuk membatasi dan menentukan jumlah sampel digunakan metode Slovin. Hasil penelitian yaitu variabel harga berpengaruh signifikan dan negatif terhadap permintaan pakaian di marketplace Shopee, variabel pendapatan berpengaruh signifikan dan positif terhadap permintaan pakaian di marketplace Shopee, variabel selera berpengaruh signifikan dan positif terhadap permintaan pakaian di marketplace Shopee, dan variabel diskon berpengaruh signifikan dan positif terhadap permintaan pakaian di marketplace Shopee.