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Jurnal Optimalisasi
Published by Universitas Teuku Umar
ISSN : 24775479     EISSN : 25020501     DOI : https://doi.org/10.35308/jopt
Core Subject : Engineering,
Control & Systems Engineering Industrial & Manufacturing Engineering
JURNAL OPTIMALISASI (JOPT) merupakan jurnal elektronik online yang diterbitkan oleh Program studi Teknik Industri, Fakultas Teknik, Universitas Teuku Umar. JOPT memuat kajian dibidang Manufaktur, Ergonomi dan Manajemen Rantai Pasok. Tujuan penerbitan jurnal optimalisasi adalah sebagai wadah publikasi yang mewadahi kebutuhan peningkatan kualitas karya ilmiah dalam rangka pengembangan keilmuan dan menyebarluaskan kajian bidang ilmu Teknik Industri, sekaligus sebagai wahana komunikasi diantara cendekiawan, praktisi, mahasiswa dan pemerhati masalah Industri. JOPT terbit dua kali dalam setahun, tepatnya pada bulan April dan Oktober. Bagi pembaca, penulis, dan yang melakukan akses situs jurnal yang ingin submit naskah ke jurnal ini, silakan mendaftar sebagai author kemudian login untuk submit naskah. Informasi penulisan dan submit naskah dapat diakses di author guidelines dengan mengikuti pentunjuk di situs jurnal.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 247 Documents
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Perencanaan Ulang Tata Letak Fasilitas Produksi (Studi Kasus: UKM Pengolahan Ikan Asin Stefen Aluy-Meulaboh) Hadi, Khairul; Hasanuddin, Iskandar; Husni, Husni; Pamungkas, Iing; Fitriadi, Fitriadi; Irawan, Heri Tri
Jurnal Optimalisasi Vol 6, No 2 (2020): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v6i2.2569

Abstract

This study used a rectilinear method in redesigning the layout of the salted fish production facility to minimize the mileage of Stefen Aluy's UKM. Stefen Aluy UKM is one of the salted fish businesses that is developing in West Aceh and its products are evenly distributed in West Aceh and its surroundings. The large production area makes it easier for UKM Stefen Aluy to maximize salted fish production. However, the large production area owned by UKM Stefen Aluy can result in long distances so that it is ineffective and efficient. The risk of worker fatigue and injury can occur due to the long distance. In addition, there is a risk of raw materials falling while moving. To minimize this potential, it is necessary to evaluate the layout of the salted fish production facilities at UKM Stefen Aluy, namely by improving the layout of the facilities. The rectilinear method can be used to minimize mileage in making layout improvements. From the results of the layout mapping based on the measurement of the rectilinear distance, the initial layout has a rectilinear distance of 6.932 cm, while the layout of the design results obtained a rectilinear distance of 3.409 cm. The result of the layout redesign resulted in a distance reduction of 49.04% from the previous distance.
Analisis Beban Kerja pada Proses Pengangkatan Pupuk ke Dalam Truck Menggunakan Metode Standard Nordic Quistionaire dan Niosh Lifting Equation di PT. Pupuk Iskandar Muda Sofiyanurriyanti, Sofiyanurriyanti; Rezayansyah, Okta; Ardiyansyah, Agus
Jurnal Optimalisasi Vol 6, No 2 (2020): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v6i2.2560

Abstract

This research was conducted at PT. Pupuk Iskandar Muda in the warehouse section I, which aims to analyze and identify the level of musculoskletal disorders experienced by operators when lifting fertilizers into trucks using Standard Nordic Quistionaire (SNQ). Determining workload using the NIOSH Lifting Equation method with the Biomechanics Software Tool where the tool aims to analyze quickly and easily in terms of postural activities experienced by a person's body and also provide a value of several levels of risk at work. The category of action with the assessment of biomechanical software is that the RWL value is obtained Recommended Weight Limit (RWL) = 13.174 and Lifting Index = 3,7951 Because LI > 1, this activity contains a risk of spinal injury for workers and the work method should not be maintained . Because this work can be categorized as dangerous for workers, the researchers recommend a tool to facilitate loading and compiling fertilizer into the truck in the form of a trolly that can move flexibly back and forth and can be placed in a truck carrying out loading and unloading. 
Metode Material Requirement Planning (MRP) untuk Perencanaan Kebutuhan Bahan Baku pada Produksi Songkok Nasional di UD. Iqbal VIP Rufaidah, Anik; Lestari, Kurnia Cahya; Wahyudin, Muhammad Arif
Jurnal Optimalisasi Vol 7, No 1 (2021): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i1.2577

Abstract

The right production design at a company will get effectiveness and more production efficiency, including the plan for material requirements or raw materials used by the company. In essence, planning to meet the needs of the material in a company is expected to produce an appropriate system to be applied, therefore making the production process smooth. Where this research aims to compile Material Requirement Planning (MRP) with lot-sizing technique, then compare the results to obtain the optimal combination of raw material procurement. The use of time series method on-demand uses past data, namely the last two years and the forecasting results use the additive decomposition method because this method gets a minimum error value. By using POM, the demand prediction for one year is 6951 scores. Meanwhile, the MPS results on the raw material for one year of songkok required 488 pcs of velvet cloth, 1391 kg of pelisir and 6951 scores of bos-bosan.  From the MRP results, the PPB technique is the most optimal for planning the raw material needs of velvet, lining and boredom by ordering the purchase of natural velvet fabric as much as six times, pelisir 1 time and bos-bosan as 6 times.
Penggunaan Tawas (Al2(SO4)3) dalam Menurunkan Kadar Total Suspended Solid Air Limbah Batubara Rahma, Cukri; Niani, Cukri Rahmi
Jurnal Optimalisasi Vol 7, No 1 (2021): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i1.2562

Abstract

Wastewater is one of the byproducts produced by coal mining companies. The wastewater contains suspended particles as well as heavy metals. Various attempts have been made to treat wastewater before it is discharged into the environment. This is done so that the waste water does not damage the environment. One way to do this is to settle suspended particles in wastewater or what is known as TSS (Total Suspended solite) using the coagulation-flocculation method. The coagulant used in this study is alum Al2 (SO4) 3. This research was conducted to determine the optimum dose or level of addition of alum into wastewater. The addition of alum is carried out in different doses, this is adjusted to the volume and discharge of waste water that is flowed to the WMP (Water Monitoring Point). The optimum dose of adding or using alum Al2 (SO4) 3 into WPM is 0.03 g / L for WMP 11, and 0.05 g/L for WMP 13.
Analisis Kebutuhan Jumlah Tenaga Kerja Optimal Berdasarkan Penilaian Beban Kerja Fisik Menggunakan Cardiovascular Load dan Stopwatch Time Study (Studi Kasus UD. Batu Alam Kabupaten Aceh Barat) Sofiyanurriyanti, Sofiyanurriyanti; Rahma, Cukri; Pandria, T. M Azis; Hardianto, Hardianto
Jurnal Optimalisasi Vol 7, No 1 (2021): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i1.3554

Abstract

This study aims to identify complaints of musculoskletal disorders experienced by operators due to load imbalance received by workers using the Standard Nordic Quistionaire, determine the workload received by workers based on the cardiovascular load method in the paving block manufacturing process and determine the optimal number of workers. according to company needs. about making paving blocks. Based on the results of the SNQ questionnaire distribution, the highest complaints occurred at the work station mixing cement with sand in making paving blocks and at the station for lifting raw materials to the tub for the paving block molding process with a percentage of 80.36 categorized as quite heavy, the second highest percentage was at the transfer station for paving blocks. which is printed to the drying place and moving the paving block to the soaking place with a percentage of 79.46% is categorized as quite heavy and the smallest percentage is at the paving block printing workstation with a percentage of 57.14% categorized as heavy, to overcome this it is recommended to increase the number of workers for the workload and complaints experienced by operators related to the risk of spinal cord injury (musculoskeletal) due to multiple work (Multi Tacking). Workload received by workers based on the cardiovascular load method in the process of making paving blocks with a workload value of 38.92%, the second highest workload with a load value of 34.68% and the third highest workload, namely the Nizam operator with a workload value of 31.60 so that the number The proposed workforce must optimally be employed in accordance with the company's needs in making paving blocks, namely 2 workers with the previous number of workers being 3 workers where the workers also work concurrently in carrying out their work activities.
Peramalan Kebutuhan Batubara Menggunakan Metode Single Exponential Smoothing di PT. Solusi Bangun Andalas Gaustama Putra; Ari Rasyid Maulud
Jurnal Optimalisasi Vol 6, No 2 (2020): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v6i2.2616

Abstract

PT. Solusi Bangun Andalas (SBA) is one of the cement producers in Indonesia with a current production capacity of 1.6 million tons per year. Coal is the main raw material used to produce electrical energy and the combustion process at PT. Andalas Build Solutions which were imported through several suppliers. The problem that occurs is the fluctuation in the use of raw materials that is not regular becomes an obstacle in the planning of fuel procurement for the company. Errors in planning the procurement of raw materials can result in excess or shortage of inventory. Excess raw materials cause several problems, such as the company has to provide more storage space and incur additional costs for storage and maintenance so that the quality of raw materials is maintained. The problem of raw material needs can be overcome by forecasting fuel consumption needs for the following month using the Single Exponential Smoothing method. From calculations using the Single Exponential Smoothing method with α = 0.1 for kiln units, the Mean Absolute Deviation is 2286.21, the Mean Squared Error is 7,850,751.46, and the Mean Absolute Percentage Error is 26.88%. For power plant units α = 0.5 Mean Absolute Deviation is 2367.05, Mean Squared Error is 9,001,707,06, and Mean Absolute Percentage Error is 18.35%. Meanwhile, the raw material needs in the next period are 10,057.49 tons for Kiln units and 14,265 tons for power plant units.
Penentuan Kinerja Usaha Kecil Menengah (UKM) Coffee Shop dengan Metode Data Envelopment Analysis (DEA) dan Comparative Performance Index (CPI) (Studi Kasus: 8 Coffee Shop di Meulaboh, Aceh Barat) Arie Saputra; Muzakir Muzakir; Sofiyanurriyanti Sofiyanurriyanti; Fitriadi Fitriadi; Ida Nopiyanti
Jurnal Optimalisasi Vol 6, No 2 (2020): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v6i2.2662

Abstract

This study discusses determining the performance of a coffee shop Small and Medium Enterprises (UKM) with the Data Envelopment Analysis (DEA) and Comparative Performance Index (CPI) method, determining performance is an important thing that must be done by a coffee shop UKM to win the competition with other coffee shop UKM. . The calculation of performance determination uses Data Envelopment Analysis (DEA), which is able to evaluate the relative efficiency level of a coffee shop unit, and which is non-parametric and multifactorial, both output and input. This study also uses the calculation of determining the performance of the Comparative Performance Index (CPI) as an alternative system in selecting coffee shop performance. This research was conducted at 8 coffee shop units in Meulaboh, West Aceh. This research was conducted to see the performance of the coffee shop which is still growing rapidly until now, considering that until now coffee shops are increasingly in demand by various groups. Attributes in determining performance are the number of customers, capital, income / profit, salary, number of workers and a questionnaire. From the results of the calculation of the Data Envelopment Analysis (DEA) all performance units are all efficiency because they get a value of 1 (100%) and in the Comparative Performance Index (CPI) calculation there are different rankings, namely warkop mae first rank, second rank arab coffee, third rank kupi atjeh ulee kareng, fourth in abudel's coffee and bistro, fifth in chaplin cafe & restaurant, sixth in gampong coffee shop and bistro, seventh in one cafe, and eighth in praja coffee.
Analisis Brand Switching dan Penentuan Strategi Pemasaran Produk Bubble Tea Menggunakan Metode Markov Chain dan Game Theory Anisa Nur Azizah; Rianita Puspa Sari
Jurnal Optimalisasi Vol 7, No 1 (2021): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i1.3275

Abstract

The emergence of various kinds of food and drinks that are packaged and presented in an attractive manner has made a change in the culinary business into a lifestyle part. One of the culinary businesses that is becoming a trend is boba. Boba products with well-known brands can easily be found in urban areas. Karawang as one of the industrial cities in Indonesia is experiencing rapid business development trends. This causes business actors and owners of the boba beverage brand to prepare a strategy to anticipate brand shifting to customers. This study aims to determine the brand shift in customers of  A products bubble tea and  B products bubble tea  which are one of the well-known brands of the boba business in Karawang, and to find out what strategies are appropriate so that business people can remain competitive and maintain customer loyalty. The use of the Markov Chain method to see the brand transfer to customers and the Game Theory method to find out strategies to win the competition. The results showed that the Market Share for  A product bubble tea was 0.401 and the  B product bubble tea was 0.599 with a business strategy that could be done, namely adding flavors at an affordable price.
Penerapan Six Sigma untuk Peningkatan Kualitas Jasa Layanan IndiHome Irnanda Pratiwi; Faizah Suryani; M. Reza Adrian
Jurnal Optimalisasi Vol 7, No 1 (2021): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i1.3404

Abstract

The development of the broadband internet access business is getting tighter these days, encouraging companies to prioritize service quality to achieve predetermined goals and objectives. IndiHome service is one of the internet access services from PT Telekomunikasi Indonesia whose access network is managed by PT Telkom Akses. PT Telkom Akses is Telkom's commitment to continue to develop unlimited broadband networks for all Indonesian people. Based on the data, there are 10.751 IndiHome services that are disrupted, with the results of the analysis using the Six Sigma method, it is known that the sigma level is 3.90 with the possibility of service being interrupted by 8,696 in a million possibilities, there are three potential Critical to Quality potentials, namely Disconnected Outdoor Cables (47,29%), Defective Splitters (31,84%), and Home Cable Installation (20,87%).
Perancangan Preferensi Konsumen untuk Meningkatkan Kualitas Sabun Mandi Ramah Lingkungan Menggunakan QFD Chriswahyudi Chriswahyudi; Wilda Fransisca
Jurnal Optimalisasi Vol 7, No 1 (2021): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i1.2709

Abstract

Over time the wants and needs of consumers for a good or service always var. Understand that consumers are a very absolute obligation because consumers have diffent needs, desires and testes, so that the products to be offered must also be adjusted to the wants and needs of consumers. So that companies have to make new innovations or develop existing products so that the managed business will continue to survive. Due to product competition that accurs, companies must improve product quality in order to realize consumer desires. So that the soap industry must produce soap that is safe and of quality so as not to harm users. The purpose this research to be achieved is to determine the level of statisfaction of the variable consumers needs, the comparison of the relative importance (TKR) using the QFD method. From the HOQ matrix analysis, there are 12 variables of consumer desires and 12 variables of technical requirements for solid bath soap products. From the calculation of the improvement ratio value, it is found that 11 variables are in accordance with consumer desires (IR = 1) and 1 variable that is not in accordance with consumer desires because it has an IR value 0f 1.02 (IR>1) so that corrective action is needed. The technical requirements variable which is a priority has a value (3.897), variable the best meets consumer preferences has the greatest importance weight (TKK = 4.55)

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