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All Journal Jurnal Sistem dan Manajemen Industri Jurnal Teknik Industri JURNAL MANAJEMEN INDUSTRI DAN LOGISTIK Digital Zone: Jurnal Teknologi Informasi dan Komunikasi JARES (Journal of Academic Research and Sciences) Enrichment : Journal of Management

Anak Agung Ngurah Perwira Redi

Bina Nusantara University

Author-ID : 2241403

Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Social Sciences Transportation

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ALGORITMA SIMULATED ANNEALING UNTUK OPTIMASI RUTE KENDARAAN DAN PEMINDAHAN LOKASI SEPEDA PADA SISTEM PUBLIC BIKE SHARING Redi, Anak Agung Ngurah Perwira; Redioka, Anak Agung Ngurah Agung
Jurnal Sistem dan Manajemen Industri Vol 3, No 1 (2019)
Publisher : Universitas Serang Raya

The public bike-sharing system has a problem where the number of bicycles at the docking station needs to be balanced to ensure system user satisfaction. The usual solution is to distribute bicycles so that system users can still park for locations that are usually full of bicycles or pick up bicycles at locations that normally lack bicycles. The purpose of solving this problem is to get a vehicle route with the total operating costs of the vehicle. The full vehicle operating costs are associated with the full time taken by the vehicle to distribute the bicycle. Besides, there are also penalty fees related to the lack of bikes or parking slots at the time of operation of the public bike-sharing facility. In this study, two variations of the simulated annealing (SA) algorithm were developed to solve the SBRP problem called SA_BF and SA_CF. The data used comes from a Velib bike-sharing system case study in Paris, France. The results of the experiment show that both the SA_BF and SA_CF algorithms succeeded in solving SBRP. This algorithm has an average difference of 2.21% and 0.36% of the Arc-Indexed algorithm (AI) from previous studies in the first dataset. As for the second dataset, Tabu Search algorithm, SA_BF and SA_CF obtained an average difference of 0.65%, 1.08% and 0.38% of the optimal results.

Implementasi Algoritma Discrete Particle Swarm Optimization Pada Permasalahan CVRP Aisyahna Nurul Mauliddina; Faris Ahmad Saifuddin; Adesatya Lentera Nagari; Anak Agung Ngurah Perwira Redi; Adji Candra Kurniawan; Nanda Ruswandi
Jurnal Sistem dan Manajemen Industri Vol. 4 No. 2 (2020)
Publisher : Universitas Serang Raya

Capacitated Vehicle Routing Problem (CVRP) is known as an NP-hard problem. It is because CVRP problems are very hard for finding optimal solutions, especially in large instances. In general, the NP-hard problem is difficult to solve in the exact method, so the metaheuristic approach is implemented in the CVRP problem to find a near-optimal solution in reasonable computational time. This research uses the DPSO algorithm for solving CVRP with ten instances of benchmark datasets. DPSO implementation uses tuning parameters with the One Factor at Time (OFAT) method to select the best DPSO parameters. The outcome objective function will be compared with several PSO models proposed in previous studies. Statistical test using One Way Reputed Measure ANOVA is needed to compare algorithm performance. First, ANOVA uses for comparing’s results. Then, ANOVA is also used to test DPSO’s performance compared with DPSO-SA, SR-1, and SR-2 algorithm. The computational result shows that the basic DPSO algorithm not competitive enough with other methods for solving CVRP.

The Relationship between Job Stress and Employee Performance in Manufacturing Industry in Indonesia Deasy Lastya Sari; Ribka Intan Putri Sinaga; Helen Storyna; Fergyanto E. Gunawan; Muhammad Asrol; A.A.N. Perwira Redi
JARES (Journal of Academic Research and Sciences) Vol 6 No 2 (2021): September 2021
Publisher : Universitas Islam Balitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/jares.v6i2.1640

One-fourth of Indonesia's Gross Domestic Product or GDP is from the manufacturing industry sector. Indonesia's government has proactively encouraged companies to increase their production capacity to meet the global demands, leading to strong demand for employees to work harder, affecting the workers' health. Overwork is often associated with fatigue, stress, and various health problems. Moreover, stress due to excessive work is a general problem many industries face and frequently influences workers' performance. Therefore, this research intends to examine the relationship between work stress and workers' performance, particularly in the manufacturing industry in Indonesia. The sample data are collected from ninety-three workers at the staff level across various companies in the manufacturing sector. The relationships between the determining factors and the Employee Productivity are evaluated by using the multivariate regression analysis. At the correlation coefficient of 0.972, we found a statistically strong relationship between the work environment and Stress to the workers' performance. The condition of low performance is attributed to the non-standard working hours and low quality of the relationship between colleagues and their superiors. Finally, the research recommends improved management of workers' stress by companies involving the adoption of flexible working hours and better communication between parties via discussion forums and meetings. Therefore, employees will be more motivated to improve work productivity.

Genetic Algorithm with Cluster-first Route-second to Solve the Capacitated Vehicle Routing Problem with Time Windows : A Case Study Karina Aginta Putri; Nur Layli Rachmawati; Mirna Lusiani; Anak Agung Ngurah Perwira Redi
Jurnal Teknik Industri Vol. 23 No. 1 (2021): June 2021
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jti.23.1.75-82

In a distribution problem, designing the right distribution route can minimize the total transportation costs. Therefore, this research aims to design a distribution route that produces a minimal distribution distance by clustering the demand points first. We generated the clustering method to cluster the demand points by considering the proximity among the demand points and the total vehicle capacity. In solving this problem, we are using p-median to determine the cluster and a genetic algorithm to determine the distribution route with the characteristics of the CVRPTW problem. CVRPTW or capacitated vehicle routing problem with time windows is a type of VRP problem where there is a limitation of the vehicle capacity and service time range of its demand point. This research concludes that clustering the demand points provides a better result in terms of total distribution costs by up to 16.26% compared to the existing delivery schedule. The performance of the genetic algorithm shows an average difference of 1.73%, compared to the exact or optimal method. The genetic algorithm is 89.68% faster than the exact method in the computational time.

Pemilihan Platform Tanda Tangan Digital Berdasarkan Faktor Keberlanjutan Selama Pandemi COVID-19 Menggunakan Metode AHP Ahmad Arif Santosa; Anak Agung Ngurah Perwira Redi
Digital Zone: Jurnal Teknologi Informasi dan Komunikasi Vol. 12 No. 2 (2021): Digital Zone: Jurnal Teknologi Informasi dan Komunikasi
Publisher : Publisher: Fakultas Ilmu Komputer, Institution: Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/digitalzone.v12i2.8014

Sistem tanda tangan digital telah banyak dimanfaatkan terutama untuk kegiatan persetujuan dokumen selama pandemi COVID-19 di Indonesia. Penelitian ini bertujuan untuk mengetahui faktor-faktor dari dimensi sustainability yang mempengaruhi keberlanjutan dalam menggunakan sistem tanda tangan digital berdasarkan metode pendekatan AHP. Penelitian ini menggunakan metode AHP karena metode ini mampu menyelesaikan persoalan dalam suatu kerangka berpikir yang terorganisir sehingga dapat mengambil keputusan secara efektif dan akurat terhadap suatu persoalan dalam penelitian. Hasil penelitian menunjukkan bahwa sub-kriteria continuous improvement dari dimensi ekonomi menjadi prioritas utama yang menjadi penunjang dalam keberlanjutan bisnis penyedia tanda tangan digital. Selanjutnya, melakukan analisis pemilihan platform tanda tangan digital antara PrivyID, DigiSign, dan Manual Input. Berdasarkan hasil perhitungan terhadap tiga alternatif menghasilkan platform DigiSign yang paling unggul dibandingkan dengan platform PrivyID dan Manual Input. Hasil tersebut sejalan dengan komitmen dari platform DigiSign yang memberikan kemudahan bagi pengguna agar dapat memeriksa dokumen yang tertunda dengan cepat, menandatangani dokumen dengan tingkat keamanan yang tinggi dan enkripsi berstandar Internasional, serta dapat melacak status dokumen dengan mudah. Sedangkan tanda tangan elektronik yang dilakukan dengan cara Manual Input memiliki kelemahan yang sangat kritikal, dimana tanda tangan elektronik tersebut tidak terenkripsi sehingga tidak mampu untuk melindungi dokumen dari pencurian data identitas atau entitas perusahaan oleh pihak yang tidak bertanggung jawab. Abstract The digital signature system has been widely used, especially for document approval activities during the COVID-19 pandemic in Indonesia. This study aims to determine the factors of the sustainability dimension that affect sustainability in using a digital signature system based on the AHP approach. This study uses the AHP method because this method is able to solve problems in an organized framework so that it can take a decisions effectively and accurately on a research problem. The results of this study indicate that the sub-criteria for continuous improvement from the economic dimension is the main priority that supports the sustainability of the digital signature provider business. Furthermore, analyze the selection of digital signature platforms between PrivyID, DigiSign, and Manual Input. Based on the results of the calculation of the three alternatives, the DigiSign platform is the most superior compared to the PrivyID platform and Manual Input. This results are in line with the commitment of the DigiSign platform which makes it easy for users to quickly check pending documents, sign the documents with a high level of security and International standard encryption, and easy to tracking the document status. Meanwhile, electronic signatures made by Manual Input have a very critical weakness, where the electronic signature is not encrypted so it is unable to protect documents from theft of identity data or corporate entities by irresponsible parties.

METODE GRAVITY LOCATION UNTUK OPTIMASI PENENTUAN LOKASI GUDANG PADA JARINGAN DISTRIBUSI DI PT XYZ Athiyyah Zhafarina (Universitas Pertamina); Adji Candra Kurniawan (Universitas Pertamina); Anak Agung Ngurah Perwira Redi (BINUS University); Nanda Ruswandi (Universitas Pertamina)
Jurnal Manajemen Industri dan Logistik (JMIL) Vol 5, No 1 (2021): page 01 - 74
Publisher : Politeknik APP Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30988/jmil.v5i1.547

AbstractXYZ company is a large textile dye companies in Indonesia. To reach existing consumers with lower transportation costs, XYZ Company plans to add new warehouses. This study provides an analysis using mathematical modeling for the problem of selecting a new facility location for XYZ company. The purpose of the model used is to provide recommendations for the location of candidate warehouse facilities that will be used as new warehouses. This study uses the gravity location method which is implemented simply with Microsoft Excel software. This method was chosen based on its suitability with the description of the problems XYZ company has. In this study, the data required to determine the location of the best facilities were collected according to the gravity location method procedure. The data collected is data related to consumers from XYZ companies such as location (latitude, longitude), number of requests, and distance data. The results of managerial analysis related to the old location and the new location for the facilities that will be used by the XYZ company show that the new location is projected to provide transportation cost savings of Rp. 416,910, - or 21% per week.AbstrakPerusahaan XYZ merupakan perusahaan pewarna tekstil yang cukup besar di Indonesia. Untuk menjangkau konsumen yang sudah ada dengan biaya transportasi yang lebih rendah Perusahaan XYZ berencana melakukan penambahan gudang baru. Penelitian ini memberikan analisa menggunakan pemodelan matematis untuk permasalahan pemilihan lokasi fasilitas baru bagi perusahaan XYZ. Tujuan dari model yang digunakan ini adalah memberikan rekomendasi lokasi kandidat fasilitas gudang yang akan digunakan sebagai gudang baru. Penelitian ini menggunakan metode gravity location yang diimplementasikan secara sederhana dengan perangkat lunak Microsoft Excel. Metode ini dipilih berdasarkan kesesuaiannya dengan deskripsi permasalahan yang dimiliki perusahaan XYZ. Dalam penelitian ini dikumpulkan data yang dibutuhkan untuk menentukan lokasi fasilitas terbaik sesuai dengan prosedur metode gravity location. Data yang dikumpulkan adalah data terkait konsumen dari perusahaan XYZ seperti lokasi (latitude, longitude), jumlah permintaan, dan data jarak. Hasil analisa manajerial terkait lokasi lama dan lokasi baru untuk fasilitas yang akan digunakan perusahaan XYZ menunjukkan lokasi baru diproyeksikan dapat memberikan penghematan biaya transportasi sebesar Rp. 416.910,- atau sebesar 21% per minggu nya.

PERANCANGAN SISTEM INFORMASI PENGELOLAAN PERSEDIAAN BAHAN BAKU DI OUTLET PERUSAHAAN XYZ Raihan Ahmad Fadhil (Universitas Pertamina); A A N Perwira Redi (Bina Nusantara University); Mirna Lusiani (Universitas Pertamina)
Jurnal Manajemen Industri dan Logistik (JMIL) Vol 4, No 2 (2020): page 84 - 168
Publisher : Politeknik APP Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30988/jmil.v4i2.557

AbstractThis research is about design and implementation of information systems in PT XYZ Outlet. The goal is to design and implement an information system that can manage data and inventory management in an integrated and centralized manner. In designing the information system, the Waterfall model is used which has the advantages that have been considered, one of which is conformity to the characteristics of the problems found. Inventory management problems in this study solved using the Min-Max Stock method. The application of the Min-Max Stock method is effective and can reduce inventory costs at PT XYZ. For Chicken Boneless Marinated, Beef Santori Tenderloin, and Coffee Bean items each reduce 5% or IDR 1,610,000, 7% or IDR 1,598,031,648, and 11% or IDR 2,150,000. The results of the design and implementation of this information system can assist in recording and managing inventory that is integrated and centralized.AbstrakPenelitian ini membahas mengenai proses perancangan dan implementasi sistem informasi pada Outlet PT XYZ. Tujuan penelitian ini adalah memperoleh rancangan dan mengimplementasikan suatu sistem informasi yang mengintegrasikan dan memusatkan pengelolaan pencatatan serta pengelolaan persediaan. Model Waterfall digunakan untuk pengembangan sistem informasi dalam penelitian ini karena memiliki kelebihan-kelebihan yang telah dipertimbangkan, salah satunya adalah kesesuaian dengan karakterisik permasalahan yang ditemukan. Sedangkan metode pengelolaan persediaan yang digunakan dalam penelitian ini adalah metode Min-Max Stock. Penerapan Min-Max Stock sebagai metode pengelolaan persediaan efektif untuk diterapkan dan dapat memangkas biaya persediaan di PT XYZ. Untuk barang Chicken Boneless Marinasi, Beef Santori Tenderloin, dan Coffee Bean masing-masing menghasilkan penghematan sebesar 5% atau Rp 1.610.000, 7% atau Rp 1.598.031,648, dan 11% atau Rp 2.150.000. Hasil dari perancangan dan implementasi sistem informasi ini dapat membantu PT XYZ dalam melakukan proses pencatatan dan pengelolaan persediaan yang terintegrasi dan terpusat.

What Motivates People to Earn a Certification in Supply Chain Management? Silvester Adi Surya Herjuna; Anak Agung Ngurah Perwira Redi
Enrichment : Journal of Management Vol. 12 No. 2 (2022): Management Science and Field
Publisher : Institute of Computer Science (IOCS)

This research examines why people enter certification programs. This research examines the supply chain management certification program, the most popular in industry (McCaffery, Backus, & Maxwell, 2020). Extrinsic motivation (Lloyd & Mertens, 2018; Baumann & Bonner, 2016); intrinsic motivation (Quinn et al., 2021; Achtziger & Gollwitzer, 2018; Australian HR Institution, 2017); obtaining a reward or incentive (Australian HR Institution, 2017); and the cost is less than the master's program (Amoruso, 2020; Craig, 2020). AHP is used to rank the 4 criteria's primary aspects. The study sampled experts. Experts are someone with expertise and experience in a subject, system, or sector (Sharma, 2017; Skjong & Wentworth, 2001). This research indicated that incentives were the largest influence in joining a certification program. Extrinsic motivation is second, intrinsic motivation is third, and cost is fourth.

Co-Authors Adesatya Lentera Nagari Adji Candra Kurniawan Adji Candra Kurniawan (Universitas Pertamina) Ahmad Arif Santosa Aisyahna Nurul Mauliddina Athiyyah Zhafarina (Universitas Pertamina) Deasy Lastya Sari Faris Ahmad Saifuddin Fergyanto E. Gunawan Helen Storyna Karina Aginta Putri Mirna Lusiani Mirna Lusiani (Universitas Pertamina) Muhammad Asrol Nanda Ruswandi Nanda Ruswandi (Universitas Pertamina) Nur Layli Rachmawati Raihan Ahmad Fadhil (Universitas Pertamina) Redioka, Anak Agung Ngurah Agung Ribka Intan Putri Sinaga Silvester Adi Surya Herjuna

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