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All Journal J@TI (TEKNIK INDUSTRI) Journal of Industrial Engineering Management ARIKA
Mohammad Thezar Afifudin
University of Pattimura
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Industrial & Manufacturing Engineering

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Journal : journal of industrial engineering management

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PENDEKATAN DUA-STEP UNTUK MASALAH PENJADUALAN PERSONIL SATUAN PENGAMANAN Mohammad Thezar Afifudin
Journal of Industrial Engineering Management Vol 2, No 1 (2017): Journal of Industrial Engineering Management Vol. 2 No. 1
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.012 KB) | DOI: 10.33536/jiem.v2i1.106

Abstract

Penelitian ini bertujuan untuk mengembangkan model matematik masalah penjadualan personil pada perusahaan penyedia layanan jasa keamanan. Pada masalah ini, setiap shift akan diisi oleh seorang personil dan jika banyaknya shift dialokasikan dengan maksimum, maka personil yang tersedia kurang dari banyaknya shift per hari untuk semua lokasi. Selain itu, setiap personil dibolehkan days off dalam horison perencanaan. Masalah diformulasi dalam model pemrograman integer binari dan diselesaikan dengan menggunakan pendekatan dua-step. Step pertama bertujuan untuk memaksimumkan kinerja melalui maksimisasi alokasi shift, sedangkan pada step kedua bertujuan untuk meminimumkan biaya dengan mempertimbangkan kendala alokasi shift dan batasan pada personil. Studi kasus dilakukan pada perusahaan penyedia layanan jasa keamanan skala kecil di mana terdapat prioritas terhadap beberapa lokasi. Hasil menunjukkan bahwa terdapat kesesuaian dengan tujuan yang diharapkan dan kendala yang dihadapi.
AN INTEGER PROGRAMMING APPROACH FOR SINGLE TRUCK ROUTING-AND-SCHEDULING PROBLEMS TO ISLANDS WITH TIME-VARYING FERRY SCHEDULES Mohammad Thezar Afifudin; Dian Pratiwi Sahar
Journal of Industrial Engineering Management Vol 5, No 2 (2020): Journal of Industrial Engineering Management Vol. 5 No. 2
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v5i2.548

Abstract

This study aims to develop a solving model for the single trucks routing-and-scheduling problems to islands with variations in ferry schedules. In this problem, the travel time is asymmetric and the truck routing is based on the sequence of island visits, known and unknown. The models are developed using an integer programming approach. Integer non-linear programming is formulated to solve problems where the sequence is unknown, whereas integer linear programming for the sequence is known. Besides, a delivery day scenario is built to determine the optimal route and schedule with minimum total travel time on each departure day. Numerical experiments were carried out on the case of a small distribution of a small industry in Central Moluccas, Indonesia. The results showed that the model developed could provide solutions to solve problems.
Co-Authors Ahmad Sawal Andi Nurwahidah Camerling, Billy Jhones Dian Pratiwi Sahar Hasmita Sari Hozairi Marcus Tukan Mulyadi Mulyadi Sahar, Dian Pratiwi