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All Journal Juriti Prima (Jurnal Ilmiah Teknik Industri Prima) JISO : Journal of Industrial and Systems Optimization Indonesian Journal of Aviation Science and Engineering
Uun Novalia Harahap
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Environmental Science Industrial & Manufacturing Engineering Public Health Transportation

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Analisis Perencanaan Bahan Material Pemasangan Trafo Dengan Metode Material Requirement Planning Uun Novalia Harahap
JURITI (Jurnal Ilmiah Teknik Industri )Prima Vol 5 No 1 (2021): Juriti Prima (Jurnal Ilmiah Teknik Industri Prima)
Publisher : Fakultas Teknologi dan Ilmu Komputer, Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/juritiprima.v5i1.2494

Abstract

Pertumbuhan pembangunan yang memicu pertumbuhan ekonomi di Indonesia, listrik merupakan insfrastuktur penting dalam mendukung pertumbuhan ekonomoni, mendorong investasi, dan pemerataan industri. Pada perannya pemsangan trafo dapat mempengaruhi berjalannya suatu pembangunan guna dapat melancarkan pengoperasian arus listrik. CV. Aneka Elektro Medan adalah perusahaan yang bergerak dibidang, kontraktor jasa dan pembangunan yang mengerjakan proyek pembangunan BTS (Base Transceiver Station) Provider Telekomunikasi dalam bidang ketenaga listrikkan. Pengedalian persediaan bahan material yang dilakukan belum maksimal, akibat dari permintaan yang tidak menentu mengakibatkan persedeiaan material berkurang atau pun berlebih sehingga dibutuhkan perhitungan dengan pendekatan MRP (Materail Requirement Planning). Dalam merencanakan bahan material ini digunakan 3 metode Lot Sizing yaitu Economic Order Quantity, Lot for Lot, dan Fixed Period Requirement. Setelah perbadingan ketiga metode tersebut didapat hasil bahwa degan metode Lot for Lot menghasilkan total biaya minimum untuk masing-masing material, dan memerlukan jumlah biaya total persediaan komulatif Rp. 1.498.650.000,-.
OPTIMALISASI PENDISTRIBUSIAN BARANG DENGAN MODEL MIXED INTEGER LINEAR PROGRAMMING PADA PT. LOGISTIK EKSPRESINDO UTAMA Zaharuddin; Rafika Apriani Pratiwi; Uun Novalia Harahap
JISO : Journal of Industrial and Systems Optimization Vol. 7 No. 1 (2024): Juni 2024
Publisher : Universitas Maarif Hasyim Latif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51804/jiso.v7i1.64-73

Abstract

PT. LogistikEkspresindoUtama is a service company that has integration services ranging from land, sea and air Freight Forwarding services, PPJK (Customs Service Management Company), and Transportation Management for Projects, which is supported by a complete selection of land, sea and air transportation fleets specializing in handling cargo that requires special handling both at home and abroad. The company's subjective judgment alone has been used to choose the current route, and the shipping cost has not been considered. As a result, a unique approach is required to solve this issue. Consequently, this research aims to identify a cost-effective route and optimize distribution costs. This study uses the Integer Linear Programming method to optimize the delivery of goods and minimize transportation costs. Based on the data processing results using the Integer Linear Programming method, it can minimize the distance of 604 km or 13.04%; the minimum travel time is 14.9 hours or 12.88%; the minimum total distribution cost is Rp 1,154,650 or 16.47%. PT. Logistik Ekspresindo Utama merupakan salah satu Perusahaan Jasa yang memiliki layanan integrasi mulai dari jasa Freight Forwardingdarat, laut maupun udara, PPJK (Perusahaan Pengurusan Jasa Kepabeanan), Manajemen Transportasi untuk Project, yang didukung oleh pilihan lengkap armada transportasi darat, laut dan udara spesialisasi dalam menangani kargo yang membutuhkan penanganan khusus baik di dalam maupun luar negeri. Penilaian subjektif perusahaan saja yang digunakan untuk memilih rute saat ini, dan biaya pengiriman belum diperhitungkan. Akibatnya, untuk menyelesaikan masalah ini, diperlukan pendekatan yang unik. Oleh karena itu, tujuan penelitian ini adalah untuk mengidentifikasi rute yang hemat biaya dan mengoptimalkan biaya distribusi. Penelitian ini menggunakan metode Integer Linear Programming untuk mengoptimalkan pengiriman barang dan meminimalkan biaya transportasi. Berdasarkan hasil pengolahan data menggunakan metode Integer Linear Programming dapat meminimumkan jarak tempuh sebesar 604 km atau 13,04%, minimum waktu tempuh sebesar 14,9 jam atau 12,88%, minimum total biaya distribusi sebesar Rp. 1.154.650 atau 16,47%.
An Analysis of Customer Satisfaction Determinants at PDAM Tirtanadi, Medan Sunggal Branch Assya Maya Siregar; Abdul Azis Syarif; Uun Novalia Harahap
Indonesian Journal of Aviation Science and Engineering Vol. 2 No. 4 (2025): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pjase.v2i4.4980

Abstract

This study aims to identify the supporting and inhibiting factors influencing the quality of drinking water services at PDAM Tirtanadi Sunggal Branch, using Zeithaml and Bitner’s framework with indicators of reliability, responsiveness, assurance, empathy, and tangibility as the measurement standards. A qualitative approach was applied, utilizing questionnaires, observations, and documentation to gather data. The findings reveal that the water service operations are adequate but not yet optimal. Several quality indicators expected to serve as benchmarks were not fully implemented, resulting in services that remain less productive. Supporting factors include the availability of adequate infrastructure and the commitment of employees to serve customers, while inhibiting factors involve limited resources, inconsistent service delivery, and insufficient responsiveness to customer complaints. Overall, the study concludes that while PDAM Tirtanadi Sunggal Branch demonstrates potential to improve its performance, systematic efforts are required to optimize all quality indicators to achieve a higher standard of service.
Co-Authors Assya Maya Siregar Rafika Apriani Pratiwi Zaharuddin Zaharuddin