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All Journal R.E.M (Rekyasa Energi Manufaktur) Jurnal Journal of Computer Networks, Architecture and High Performance Computing Jurnal Ar Ro'is Mandalika (Armada)
Aliyadi
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Religion Computer Science & IT Education Engineering Languange, Linguistic, Communication & Media Mathematics

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The Hardness and Microstructure of a Mixture of Used Plastic Waste HDPE, PET and Iron Filings Wawan Trisnadi Putra; Aliyadi; Kuntang Winangun
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 7 No 2 (2022): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v7i2.1636

Abstract

Plastik memegang peranan penting dalam kehidupan manusia, karena plastik merupakan salah satu bahan yang sering digunakan dalam kehidupan sehari-hari sebagai tempat makanan, botol minuman, dll. Plastik sering digunakan karena ringan, fleksibel, dan mudah dibentuk. Namun di era sekarang ini, plastik kini menjadi masalah baru karena menyebabkan sampah plastik membutuhkan waktu yang lama untuk terurai. Selain itu, sampah tidak hanya terkait dengan plastik, tetapi logam juga dapat menjadi limbah, seperti debu besi yang dihasilkan selama pemotongan dan pengeboran material besi. Dan solusi yang ditawarkan adalah dengan memanfaatkan seluruh limbah yang ada untuk dijadikan bahan baru berupa campuran plastik dan serbuk besi dengan metode pengepresan menggunakan panas/suhu, jenis plastik yang digunakan dalam penelitian ini adalah high density polyethylene, polyethylene terephthalate dan serbuk besi, kemudian komposisi pada kisaran HDPE 30% 50%, PET 30% 50% dan serbuk besi 10% 20% Made. Hasil persentase tersebut digunakan sebagai pedoman dalam pembuatan sampel, yang kemudian diuji kekerasan dan struktur mikronya. Setelah dilakukan pengujian nilai kekerasan tertinggi yaitu 2,63 Kgf/mm², dan nilai kekerasan terendah adalah 1,93 Kgf/mm², maka pada pengujian struktur mikro menunjukkan material dengan nilai tertinggi dan terendah, terdapat perbedaan udara yang terperangkap dalam material dan densitas dari hasil pengepresan.
Feasibility Study on the Relocation of the Mrican Ponorogo Landfill in 2024 Aliyadi
Jurnal Ar Ro'is Mandalika (Armada) Vol. 5 No. 1 (2025): JURNAL AR RO'IS MANDALIKA (ARMADA)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59613/armada.v5i1.5292

Abstract

The problem of waste management in Ponorogo Regency is increasingly complex along with the growth of the population and the increase in the volume of waste. One of the waste management locations that is facing problems is the Mrican Landfill, which has been operating since 1995 and is now experiencing excess capacity. This study aims to evaluate the feasibility of relocating the Mrican Landfill to a new location that is wider and in accordance with technical, social, and environmental criteria. This feasibility study uses a multicriteria analysis approach involving Simple Additive Weighting (SAW) methods and SWOT analysis, as well as GIS techniques for site suitability evaluation. The results of the study show that the new 9.38-hectare site can accommodate waste for 28 years with a capacity of around 2,900,000 m³ or 750,000 tons. This relocation is feasible from various aspects, including environmental, social, economic, and technical. The selection of a new location meets the criteria of SNI No. 03-3241-1994, with considerations such as safe distance from settlements, topographic conditions, accessibility, and minimal risk of pollution. This research also recommends improving supporting infrastructure, an efficient waste management system, and socialization programs to the community. The relocation of this landfill is expected to improve the quality of waste management and support environmental sustainability in Ponorogo Regency.
Analysis of the Level of Satisfaction with the Use of Computer Assisted Test at SMAN 1 Parang Magetan Aliyadi; Karaman, Jamilah
Journal of Computer Networks, Architecture and High Performance Computing Vol. 6 No. 1 (2024): Article Research Volume 6 Issue 1, January 2024
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/cnahpc.v6i1.3473

Abstract

The use of technology in education sector provides many conveniences in carrying out learning activities. One use of technology in the education sector can be used by teaching staff to carry out evaluations after carrying out a series of learning activities. The technology that can be used can be in any form, one of which is a system that is built to facilitate the learning process from start to finish. One system that can be used is the systemComputer Assisted Test (CAT). CAT is a system that uses computers as the main medium. In the CAT system, practice questions can be input which will be filled in by students later. This CAT system is used by students to work on practice questions. The system that has been used needs to be evaluated to determine its advantages and disadvantages. One method that can be used to analyze a system is the usability approach User Satisfaction Quesionnaire (UEQ). This approach uses user experience as the main aspect in system assessment and there are 6 variables assessed, namely Attractiveness (Daya Tarik), Efficiency (Efisiensi), Clarity (Tingkat Kejelasan), Dependability (Ketepatan), Stimulation (Stimulasi), and Novelty (Kebaruan). This research uses a UEQ questionnaire which will be filled in by 88 students and 12 teachers who act as research samples after working on practice questions through the CAT system. The completed questionnaire was then analyzed and it was discovered that for the Attractiveness, Efficiency, Clarity and Stimulation variables received the "Very Good" criteria, the Novelty variable "Good", and  the Dependability variable "Below Average".
Co-Authors Karaman, Jamilah Kuntang Winangun Wawan Trisnadi Putra