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All Journal Majalah Ilmiah Warta Dharmawangsa Jurnal Jalan Jembatan
Amalia, Tata
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Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Education

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PARAMETER MARSHALL DAN KOEFISIEN PERMEABILITAS CAMPURAN FLY ASH DAN ABU SEKAM PADA ASPAL GEOPORI Amelia, Tasya; Indrayani, Indrayani .; Kosim, Kosim; Amalia, Tata
Jurnal Jalan Jembatan Vol 41 No 2 (2024)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58499/jatan.v41i2.1287

Abstract

The use of geoporous asphalt is an environmentally friendly alternative because it is made using waste and in its application it can help water absorption into the soil.. The waste used to manufacture porous asphalt in this study was fly ash (FA) and rice husk ash (AS). Fly ash has pozzolanic properties, and rice husk ash contains carbon (C) and silica elements, which function as adhesives. Using goepore asphalt on the shoulder of the road can be an alternative to faster water absorption without damaging the pavement layer underneath. This study aimed to obtain a mixture variation between FA and AS as fillers for optimal mixture variation in manufacturing porous asphalt. Comparison of filler mixtures in manufacturing test objects with FA and AS mixtures variations using the filler substitution method in the manufacture of regular asphalt, namely cement. In the variation of normal asphalt mixture content, the cement used is 2%  from the weight of asphalt substituted with a mixture of FA and AS for the manufacture of geoporous asphalt test specimens with variations in filler mixture con. This study used 60/70 penetration asphalt with an optimum asphalt content (KAO) of 4.6%. From the test results, it was found that the most optimum mixture content variation was in a mixture of 100% AS: 0% FA with a stability value of 729.556 kg, a flow value of 5.37 mm, a VIM (Void In the Mix) value of 20.86%, a Marshall Quotient (MQ) of 135.82 kg/mm, and a permeability coefficient value of 0.447 cm/sec. The Marshall parameter values and permeability coefficient values  meet the AAPA 2004 specifications, namely 500 kg stability, 2-6 mm flow value, 18-25% VIM value, 400 kg/mm MQ, and a permeability coefficient of 0.1-0.5 cm/sec.
AUDIT SISTEM INFORMASI MENGGUNAKAN FRAMEWORK COBIT 5 PADA PERPUSTAKAAN SMP NEGERI 9 BINJAI Amalia, Tata; Adinata, Femas; Br Bangun, Gia Natasya; Marbun, Putri Efrida
Jurnal Warta Dharmawangsa Vol 19, No 1 (2025)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/wdw.v19i1.5628

Abstract

Sistem informasi perpustakaan menjadi salah satu implementasi teknologi informasi penting di bidang pendidikan. SMP Negeri 9 Binjai telah menggunakan sistem informasi perpustakaan sejak 2019 untuk meningkatkan efisiensi layanan, namun masih menghadapi berbagai kendala seperti ketidaksesuaian data, antarmuka yang tidak ramah pengguna, serta kurangnya kebijakan manajemen risiko. Penelitian ini bertujuan untuk mengevaluasi kinerja sistem informasi perpustakaan di SMP Negeri 9 Binjai menggunakan framework COBIT 5, khususnya pada domain Deliver, Service, and Support (DSS). Penelitian ini menggunakan metode deskriptif dengan pendekatan kuantitatif. Data dikumpulkan melalui studi pustaka, wawancara, observasi, dan kuesioner. Analisis dilakukan pada lima proses utama domain DSS: Mengelola Operasi (DSS-01), Mengelola Permintaan Layanan dan Insiden (DSS- 02), Mengelola Masalah (DSS-03), Mengelola Keberlanjutan (DSS-04), dan Mengelola Layanan Keamanan (DSS-05). Hasil penelitian menunjukkan rata- rata tingkat kematangan sistem berada pada Level 3,46, dengan beberapa kesenjangan pada aspek pengelolaan operasi, keberlanjutan, dan keamanan layanan. Rekomendasi mencakup peningkatan pelatihan pengguna, penguatan manajemen risiko, penambahan fitur keamanan, dan perbaikan antarmuka sistem. Melalui rekomendasi berbasis framework COBIT 5, sistem informasi perpustakaan diharapkan dapat menjadi lebih andal, efisien, dan mendukung transformasi digital di dunia pendidikan.
Co-Authors Adinata, Femas Amelia, Tasya Br Bangun, Gia Natasya Indrayani, Indrayani . Kosim Kosim Marbun, Putri Efrida