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All Journal Journals Mining Engineering : Bina Tambang Ranah Research : Journal of Multidisciplinary Research and Development Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Afdal Zikri
Universitas Negeri Padang
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Transportation Other

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Analisis Optimasi Produktivitas Alat Gali-Muat (Excavator) Dan Alat Angkut (Dump Truck) Pada Pengangkutan Andesit Untuk Mengoptimalkan Produksi Di PT. Koto Alam Sejahtera Afdal Zikri; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v6i1.111804

Abstract

Abstract. PT Koto Alam Sejahtera is a private mining company engaged in the andesite mining business in Koto Alam, Lima Puluh Kota Regency. In andesite mining activities, PT. Koto Alam Sejahtera uses a series of excavators and dump trucks to move material from the loading point to the waste dump. In the process of transporting andesite to the crusher there is a queue of dump trucks and long stand-by times at the dump trucks, this can cause the productivity of the tools to be small so that the Andesite stone production target of 80,000 tons / month is not achieved. This is due to the inefficient working time of mechanical tools. This production target was not achieved due to the inappropriate combination of transportation equipment (Mitsubishi Fuso 220 PS) and loading equipment (Hitachi ZX350) which resulted in queues or waiting times for transportation vehicles. One of the ways to achieve the production target requires appropriate fleet management. Based on research that was carried out in October 2019, the productivity of the Hitachi ZX-350 excavator was 344,9378 tons / hour and the productivity of the Mitsubishi Fuso 220 PS dump truck was 78,10247 tons / hour. The composition of the equipment used is 1 unit of excavator serving 5 units of dump trucks, causing the combination of transportation and loading factors to be inappropriate. To overcome the long queue time, the composition of the MF = 1 tool was improved. Fleet settings are based on the queuing method, namely 1 unit of digging equipment and 4 units of transportation equipment with a production of 83.101,03 tons / month. Keywords: Flee Management, Queuing Method, Match Factor, Production, Productivity, Dump Truck
Pengembangan LKPD pada Mata Pelajaran Instalasi Motor Listrik di SMK Negeri 1 Bukittinggi Afdal Zikri; Ta'ali
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 2 No. 2 (2020): Ranah Research : Journal Of Multidisciplinary Research and Development (Februar
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (401.258 KB)

Abstract

LKPD adalah suatu bahan ajar cetak berupa lembar-lembar kertas yang berisi materi, ringkasan, dan petunjuk-petunjuk pelaksanaan tugas pembelajaran yang harus di kerjakan oleh peserta didik. Dengan adanya LKPD siswa dapat lebih aktif dalam mengembangkan potensi dirinya secara mandiri. Berdasarkan observasi di SMK Negeri 1 Bukittinggi, LKPD yang digunakan di sekolah masih belum sesuai dengan tuntunan kurikulum 2013 yang menuntun siswa untuk dapat aktif dan struktur LKPD yang ada di sekolah belum sesuai dengan struktur LKPD yang semestinya. Jenis penelitian yang digunakan dalam pengembangan LKPD ini yaitu penelitian R&D (Research and Development) dengan menggunakan model 4D. Hasil yang didapatkan dari penelitan ini adalah pengembangan LKPD yang dikategorikan valid, sangat praktis dan efisien.
Meningkatkan Hasil Belajar Siswa Melalui Model Pembelajaran Kooperatif STAD pada Mata Pelajaran Instalasi Listrik Afdal Zikri; Syaiful Islami
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 4 (2025): Juli: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i4.909

Abstract

Vocational high schools (SMK) play an important role in preparing students for the world of work. However, student learning outcomes in the subject of Electrical Lighting Installation at SMK Negeri 5 Kota Padang are still relatively low, with an average pretest score of 57.34. This study aims to test the effectiveness of the Student Teams Achievement Division (STAD) cooperative learning model in improving student learning outcomes. The research method used was classroom action research with 32 students from class XI TITL as subjects. Data were collected through pre-tests, post-tests, and observations of student activities during learning. The results of the study indicate that the implementation of STAD successfully improved student learning outcomes significantly, with an average post-test score of 82.19 and an N-Gain Score of 0.58 (moderate category). Academic achievement also increased from 15.6% to 75%. Further analysis revealed that collaborative interactions within groups, the reward system, and active student participation were key factors contributing to the success of this method. However, challenges such as time management and low student engagement require attention. It is concluded that the STAD model is effective in improving students' learning outcomes in the subject of Electrical Lighting Installation, both in terms of cognitive aspects and social skills. Therefore, it is recommended that teachers implement STAD with proper syntax and consider developing supporting media such as digital simulations to optimize the learning process.
Co-Authors Syaiful Islami Ta'ali Yoszi Mingsi Anaperta