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All Journal Jurnal Agroindustri Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Riwayat: Educational Journal of History and Humanities
Safrizal Safrizal
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Social Sciences

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OPERATOR WORKLOAD ANALYSIS ON TRAILER OPERATION USING TWO WHEEL TRACTOR WITH CAGE WHEEL IN PALM OIL SOIL Muhammad Idkham; Muhammad Dhafir; Safrizal Safrizal; Safna Marisza
Jurnal Agroindustri Vol 12, No 1 (2022)
Publisher : BPFP Faperta UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agroindustri.12.1.48-60

Abstract

The operation of the pivot trailer on flat land is more ergonomic than conventional trailers, but on sloping land it has never been tested. The operation of the two-wheeled tractor carried out by the operator on uneven land has problems with the steering handlebar which goes up and down following the movement of the tractor body, thus affecting the increase in workload. To reduce the excessive workload, it is necessary to design a trailer that can be controlled easily. The purpose of this study was to analyze ergonomics, especially the operator's workload when operating a pivot trailer and conventional trailer on a two-wheel tractor using cage wheels. The trailer is towed on a tractor with treatment on sloping land and flat land with several turns, and data collection of the operator's workload uses the heart rate method. The results showed that the operation of the pivot trailer for sloping land (0°, 10°, and 30°) respectively showed IRHR values of 1.13, 1.15, and 1.46 or work levels of "Light", "Light”, and “Medium”. When using a conventional trailer, the IRHR values are 1.12, 1.12, and 1.39 or work levels of “Light”, “Light” and “Medium”. The average energy consumption rate for operating a pivot type trailer is 2.80 kcal/hour.kg-bb (kilocalories per hour per operator weight), while using a conventional trailer is 2.75 kcal/hour.kg-bb. The level of operator workload is also influenced by skills in driving.
Pengaruh Penerapan Pembelajaran Kooperatif Tipe Bamboo Dancing Terhadap Prestasi Belajar IPS Siswa SMP Negeri 4 Banda Aceh Safrizal Safrizal; Fitri Arisna
Riwayat: Educational Journal of History and Humanities Vol 2, No 1 (2019): Februari, 2019, Educatio, History and Sociology
Publisher : Universitas Syiah Kuala

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Abstract

Penelitian yang berjudul “Pengaruh Penerapan Pembelajaran Kooperatif Tipe Bamboo dancing terhadap Prestasi Belajar IPS Siswa Kelas VIII SMP Negeri 4 Banda Aceh. Penelitian ini mengangkat masalah bagaimanakah pengaruh model pembelajaran  kelas VIII-1 (eksperimen) siswa yang mencapai ketuntasan sebesar 83,33 persen dan kelas VIII-2 (kelas kontrol) siswa yang mencapai ketuntasan sebesar 40 persen.  Perhitungan korelasi (r) untuk mencari pengaruh antara variabel X dan Y diperoleh hasil sebesar 0,96 hal tersebut menunjukkan bahwa adanya hubungan yang erat antara  variabel X (nilai hasil siswa belajar kooperatif tipe Bamboo dancing) dan variabel Y (nilai prestasi belajar konvensional). 
Assessment of Robusta Coffee Quality Using Parameters of Specialty Coffee Association by Analytical Hierarchi Process (AHP) Method Safrizal Safrizal; Yuliani Safmila; Miftahul Jannar; Yusmanizar Yusmanizar; Muhammad Idkham
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 4 (2025): August 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i4.1282-1290

Abstract

Understanding differences of the interests and tastes of each consumer are the basis for developing Robusta coffee in Aceh. This study aims to obtain consumer preferences on Robusta coffee in term of quality parameters of the Specialty Coffee Association (SCA). Robusta coffee samples were obtained from three places, namely Tangse, Lamno and Bener Meriah. Post-harvest handling of coffee beans included dry and wet processes. Preparation of test samples was carried out by following the SCA protocol, coffee testing was carried out by 3 professional panelists (Q-Grader). Consumer preferences was analyzed using the analytic hierarchical process (AHP) method. The results of the study indicated that the taste of Robusta coffee with a weight value 0.36 is preferred over other parameters. Based on the taste test on respondents, the best coffee based on ranking using the AHP method is Lamno coffee with wet processing which has a preference level of 0.0429. The results is in accordance with the cupping test assessment and the taste assessment which lies in the assessment of the best coffee, namely Lamno coffee with wet processing achieving a total cupping score of 75.25. Using the Analytical Heirarchy Process (AHP) method Lamno Robusta coffee with wet processing is the best based on the quality parameters from the SCA.   Keywords: AHP, Coffee, Lamno, Robusta, Tangse.
Implementasi Sistem Computer-Assisted Test (CAT) untuk Meningkatkan Efisiensi Evaluasi Belajar di Lembaga Bimbingan Belajar Graha Taruna Aceh Al Bahri; Safrizal Safrizal; Aulia Rahman
Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Vol 10 No 4 (2026): OCTOBER 2026
Publisher : Lembaga Komunitas Informasi Teknologi Aceh (KITA), Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jtik.v10i4.6366

Abstract

The Computer-Assisted Test (CAT) system represents a practical application of information technology aimed at improving the efficiency and accuracy of learning evaluation processes. This study aims to implement and evaluate a web-based CAT system at Graha Taruna Aceh Tutoring Institution. The research methodology includes system design and implementation, followed by evaluation through functional testing and a user perception survey. The results indicate that the CAT system enhances the efficiency of examination administration, improves scoring transparency, and facilitates the management of test items and examination results, while also generating significant operational cost savings, with an average cost reduction of approximately 60% per examination session compared to conventional methods. The implementation of this system further contributes to increased utilization of information technology within non-formal educational institutions.
Co-Authors Al Bahri Aulia Rahman Fitri Arisna Miftahul Jannar Muhammad Dhafir Muhammad Idkham Safna Marisza Yuliani Safmila Yusmanizar Yusmanizar