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All Journal TEKNIK INFORMATIKA Ambidextrous : Journal of Innovation, Efficiency and Technology in Organization
Supardi Razak
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering

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Use Case Point Activity-Based Costing and Adjusted Function Point for Software Cost Estimation Ahmad Fauzan Haryono; Andria Farhan; Dewi Khairani; Supardi Razak; Fitri Mintarsih
JURNAL TEKNIK INFORMATIKA Vol. 18 No. 2: JURNAL TEKNIK INFORMATIKA
Publisher : Department of Informatics, Universitas Islam Negeri Syarif Hidayatullah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jti.v18i2.46669

Abstract

Effective software development planning is vital across various industries, and inadequate planning can lead to project failures. A key part of this planning is accurately estimating effort and costs, which is crucial for staying within budget and meeting deadlines. This research compares two methods – Use Case Point Activity Based Costing (with 21 complexity factors) and Adjusted Function Point (with 16 complexity factors) – for estimating costs versus actual values. The analysis reveals that the Use Case Point method had a 23.52% deviation from actual costs, while the Adjusted Function Point method had a 33.35% deviation. These findings provide essential reference points during software project planning, ensuring estimates closely align with actual values based on project-specific attributes. This deviation underscores the importance of precision and selecting appropriate methodologies tailored to each project’s unique characteristics. Ultimately, this research equips businesses and project managers with a robust financial prudence framework and enhances the likelihood of project success.
OPTIMIZATION OF OVERBURDEN BLASTING GEOMETRY BASED ON THE EFFECT OF BLASTHOLE DEPTH ON POWDER FACTOR AND EXPLOSIVES COSTS TO MEET PRODUCTION TARGET Natasya Rosiana Maharani; Supardi Razak; A. Silvan Erusani
Ambidextrous Journal of Innovation Efficiency and Technology in Organization Vol. 5 No. 03 (2026): Ambidextrous: Journal of Innovation, Efficiency and Technology in Organization
Publisher : Takaza Innovatix Labs Ltd.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61536/ambidextrous.v5i03.903

Abstract

Blasting in overburden stripping strongly influences whether production targets are met and is also one of the largest operating cost items. This study examines how strongly blasthole depth affects powder factor (PF) and explosive cost, and then formulates an improved blast geometry so that the target of 200,000 BCM per cycle can be achieved more cost-efficiently. A quantitative approach with descriptive and comparative analysis was applied to one overburden blasting cycle at a coal mine in South Kalimantan, consisting of 334 blastholes 6.0–9.0 m deep drilled on an actual 7 m burden and 8 m spacing. Simple linear regression shows that hole depth is very strongly related to explosive charge (R² = 0.989), PF (R² = 0.957), and specific blasting cost (R² = 0.951). The actual geometry broke only 75.31% of the target at a PF of 0.341 kg/BCM. Three alternative geometries were designed using ICI Explosives criteria, all of which meet the target. The 8 m burden and 10 m spacing alternative performed best, giving a PF of 0.237 kg/BCM and a specific cost of Rp. 4,589.82/BCM, about 30% lower than the actual condition while requiring fewer holes. The findings indicate that increasing blasted volume is more effectively achieved by enlarging burden and spacing than by deepening the holes.
Co-Authors A. Silvan Erusani Andria Farhan Fitri Mintarsih Haryono, Ahmad Fauzan Khairani, Dewi Natasya Rosiana Maharani