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All Journal TEKMAPRO Journal of Industrial Engineering and Management Sinkron : Jurnal dan Penelitian Teknik Informatika JOURNAL OF APPLIED INFORMATICS AND COMPUTING JKIE (Journal Knowledge Industrial Engineering) JURNAL MANAJEMEN BISNIS Journal of Economics, Business, and Government Challenges International Journal of Eco-Innovation in Science and Engineering (IJEISE) Juminten : Jurnal Manajemen Industri dan Teknologi JPNM : Jurnal Pustaka Nusantara Multidisiplin Jurnal Pengabdian Masyarakat Indonesia (JPMI) Serambi Engineering Journal of Optimization System and Ergonomy Implementation Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
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Analisis Peramalan Kebutuhan dan Safety Stock Material Plat Dalam Pembuatan Kapal Pada PT. XYZ Menggunakan Metode Time Series Ahyaliya, Marsya Laila; Tranggono
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

A shipyard is an industry that designs, builds and repairs ships. The shipbuilding process at a shipyard involves a number of complex stages, from design to launch. If there is too much stock, the company will incur high storage costs. Conversely, if the stock is too low, the production process will be hampered by delays in material delivery, which can ultimately affect the ship's launch schedule. To overcome these problems, PT XYZ needs to implement a better inventory control system. This system aims to ensure the availability of sufficient plate materials to meet production requirements, including forecasting demand, determining safety stock levels and setting reorder points. The method used in this study is a time series consisting of three methods, namely single moving average, weighted moving average and single exponential smoothing using POM-QM software. Based on the results of the study, the feasible method to be applied to PT XYZ forecasting is a moving average with a MAD value of 5,444, MSE of 46,679, MAPE of 6,695% and forecasting results of 85 pcs per month. Based on the calculation results, it is recommended to reorder the sheet material when the stock reaches the reorder point of 271 pcs. This figure takes into account the safety stock of 18 pcs.
Pengaruh Kualitas Aplikasi Ruangguru CAMP Terhadap Kepuasan Mahasiswa Study Independent Product Management (Studi Kasus: Efektivitas dan Pengalaman Pengguna) Laily, Nisfal; Tranggono
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Ruangguru CAMP is a joint programme between Ruangguru and Kampus Merdeka. This programme is in the form of online course learning. The purpose of this study is to determine the extent to which application quality affects the level of student satisfaction in the Independent Product Management study programme. The data collection method used in this study is a questionnaire to collect sample data from 77 students of Ruangguru CAMP Independent Product Management Study Programme. After the data is collected, the data is analysed using the multiple linear regression method to determine whether there is a significant relationship between application quality and user satisfaction. After analysing the data, the results showed that application quality has a positive impact on user satisfaction with a contribution coefficient of 71.4%. Therefore, developers should always optimise application performance to reduce the potential for crashes or other technical problems that may affect the comfort or overall user experience.
Identifikasi dan Pengendalian Bahaya K3 Pada Aktivitas Suplai Air Bersih untuk Kapal di Dermaga XYZ Menggunakan Metode JSA dan HIRARC Yanita Vidya Pramesthi; Tranggono
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The water supply activity at XYZ Dock is a high-risk work area. The purpose of this research is to identify hazard risks and provide suggestions for controlling occupational safety and health (OSH) hazards at XYZ Pier. The methods used in this research are Job Safety Analysis Hazard Identification (JSA) and Hazard Risk Assessment and Control (HIRARC). Based on the results obtained from the identification of hazards in each water supply activity, the data obtained in the hose laying activity has 4 medium hazards and 2 low hazards. In the clean water distribution activity, there is 1 high risk, 2 medium risks and 1 low risk. In the activity of releasing the hose there is 1 risk of medium value and 3 risks of low value. After risk control, there is 1 medium risk and 5 low risks in the hose laying activity. In the clean water distribution activity there is 1 medium value risk and 3 low value risks. In the hose removal activity, there is 1 risk of medium value and 3 risks of low value. Therefore, this investigation is able to reduce the risk of potential hazards in the clean water supply activities at XYZ pier.
Analisis Persediaan Bahan Baku Plastik PET Bening dengan Metode Min-Max di PT Gajah Surya Plastik Nadya Novianti Ramadhani; Tranggono
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The uncertain amount of raw materials greatly affects the smoothness of production in a company and the amount of production output, thus encouraging researchers to conduct research on raw material inventory control. PT. Gajah Surya Plastik, is a company engaged in plastic recycling. Companies need to know the minimum stock of raw materials that must be held and the maximum stock limit that the company can hold in order for the raw material supply to be optimal. The min-max stock method was used to determine the maximum and minimum stock levels of the company's clear PET plastic raw materials. This research was carried out using primary data on the company's raw materials and interviews with related parties. From the research, the results of the data processing are that the minimum stock limit is 38,254 kg and the maximum raw material stock limit is 67,309 kg. With a safety stock value of 9199 kg. In addition, the raw material consumption for the next period is forecast with minimum error using the exponential smoothing method. The results of this research minimise the occurrence of stockouts and overstocks of clear PET plastic raw materials, so that production runs optimally.
Application of the Think Aloud and System Usability Scale (SUS) Methods in Usability Evaluation in Online Transportation Applications for the Elderly Aneke Putri Nadila; Tranggono; Mega Cattleya Prameswari Anissa Islami
Journal of Applied Informatics and Computing Vol. 9 No. 2 (2025): April 2025
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaic.v9i2.9191

Abstract

Technological advancements have driven the adoption of online transportation applications by various user groups, including the elderly. However, limitations in cognitive aspects and digital experiences cause barriers to application use. This study was conducted to evaluate the usability of online transportation applications for elderly users using the Think Aloud and System Usability Scale (SUS) methods. The evaluation was carried out through a series of tests with eight elderly respondents to measure effectiveness, efficiency, and user satisfaction. The Think Aloud method was used to explore the experiences and difficulties faced by the elderly on the application interface, respondents verbally expressed their thoughts and feelings during the testing process. The Think Aloud testing process is analyzed to identify the specification of the requirements that form the basis for the redesign of the application. The measurement results showed that the average application effectiveness value increased from 85% in the initial design to 100%. Efficiency values show a significant improvement from the initial design of 73% to 100% in the proposed improvement design. The average SUS score before the improvement was 61.25 in the marginal category, and increased to 81.25 in the acceptable category after the improvement design. The results of this study confirm that optimizing design based on the needs of the elderly can improve the user experience and accessibility of online transportation services.
SMALL AND MEDIUM MICRO ENTREPRISES INNOVATION STRATEGIES IN EFFORTS TO FACE THE INDUSTRY REVOLUTION 4.0 Tranggono; Egan Evanzha Yudha Amriel; Endang Sholihatin; Nanang Haryono
Journal of Economics, Business, and Government Challenges Vol. 4 No. 01 (2021): Journal of Economics, Business, and Government Challenges [JoEBGC]
Publisher : Faculty of Economics and Bussiness, UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ebgc.v4i1.162

Abstract

Micro, small and medium enterprises still rely on conventional ways ofdoing business. On the other hand, rapid digitalization is integrated with theeconomy and trade, giving birth to the industrial revolution 4.0. If micro, smalland medium enterprises do not want to innovate, they will be disrupted. Theresearch objectives are to describe the innovation strategies of micro, small andmedium enterprises in increasing competitiveness in facing the industrialrevolution 4.0; and also identify factors that hinder the innovation of micro, smalland medium enterprises in increasing competitiveness in facing the industrialrevolution 4.0. The method used in this research is qualitative. The researchlocation is in the area of ​​micro, small and medium enterprises in Gresik Regencyand Sidoarjo Regency. The conclusion of this research is(a) innovation strategiesfor micro, small and medium enterprises in increasing competitiveness in facingthe industrial revolution 4.0 through marketing with e-commerce marketingthrough social networking media. One of the strategies is product innovation.(b)Furthermore, the factors that hinder innovation are human resources, capital toinnovate, a narrow owner's mindset, and the use of technology that is still simple.lack of strategic partners for innovation, managementmicro small and MediumEnterprises who are kinship and less professional, and lack of permits micro smalland Medium Enterprises.
SMALL AND MEDIUM MICRO ENTREPRISES INNOVATION STRATEGIES IN EFFORTS TO FACE THE INDUSTRY REVOLUTION 4.0 Tranggono; Egan Evanzha Yudha Amriel; Endang Sholihatin; Nanang Haryono
Journal of Economics, Business, and Government Challenges Vol. 4 No. 01 (2021): Journal of Economics, Business, and Government Challenges [JoEBGC]
Publisher : Faculty of Economics and Bussiness, UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ebgc.v4i1.162

Abstract

Micro, small and medium enterprises still rely on conventional ways of doing business. On the other hand, rapid digitalization is integrated with the economy and trade, giving birth to the industrial revolution 4.0. If micro, small and medium enterprises do not want to innovate, they will be disrupted. The research objectives are to describe the innovation strategies of micro, small and medium enterprises in increasing competitiveness in facing the industrial revolution 4.0; and also identify factors that hinder the innovation of micro, small and medium enterprises in increasing competitiveness in facing the industrial revolution 4.0. The method used in this research is qualitative. The research location is in the area of ​​micro, small and medium enterprises in Gresik Regency and Sidoarjo Regency. The conclusion of this research is(a) innovation strategies for micro, small and medium enterprises in increasing competitiveness in facing the industrial revolution 4.0 through marketing with e-commerce marketing through social networking media. One of the strategies is product innovation.(b) Furthermore, the factors that hinder innovation are human resources, capital to innovate, a narrow owner's mindset, and the use of technology that is still simple. lack of strategic partners for innovation, managementmicro small and Medium Enterprises who are kinship and less professional, and lack of permits micro small and Medium Enterprises.
Analysis of Supplier Selection of Steel Plate Raw Materials on Railways using Analytical Hierarchy Process (AHP) and Additive Ratio Assessment (ARAS) Methods at PT XYZ -, Dira Ernawati; Tranggono; Yekti Condro Winursito
Journal of Optimization System and Ergonomy Implementation Vol 3 No 01 (2025): Journal of Optimization System and Ergonomy Implementation
Publisher : Program Studi Teknik Industri S-1, Fakultas Teknik UPN Veteran Jakarta

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Abstract

Companies need to develop a good business strategy in order to compete, including in choosing quality raw materials from the best suppliers. This research aims to select the best steel plate raw material supplier at company XYZ by using the Analytical Hierarchy Process (AHP) and Additive Ratio Assessment (ARAS) methods. This research involves the process of primary and secondary data collection which includes identifying supplier selection criteria, collecting data for each criterion, and collecting performance data from suppliers. The results showed that the order of the best steel plate raw material suppliers at company XYZ with the largest value was ranked 1st supplier company Steel Kras with a K value of 0,195207; ranked 2nd supplier company Jaraindo with a K value of 0,137696; ranked 3rd supplier company Capris with a K value of 0,135158; ranked 4th supplier company Kamaseta with a K value of 0,116481; ranked 5th supplier company Wima Indo with a K value of 0,106039 and ranked 6th supplier company Cenia Mandiri with a K value of 0,084586. Based on the AHP and ARAS methods, the relative weight of each criterion has been calculated, which helps in evaluating the best or potential suppliers to choose from. In addition, the ranking of suppliers is also determined based on the resulting priority value.
Inventory Control of Raw Material Requirement in NPK Fertilizer Production Using the Min-Max Method at PT ABC Putri, Shelany Andhika; Tranggono
Journal Knowledge Industrial Engineering (JKIE) Vol 12 No 1 (2025): JKIE (Journal Knowledge Industrial Engineering)
Publisher : Department of Industrial Engineering - Universitas Yudharta Pasuruan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35891/jkie.v12i1.5842

Abstract

PT ABC, a company in the fertilizer and chemical industry. One of the fertilizer products produced is NPK fertilizer, which is highly beneficial for enhancing the quantity and quality of agricultural products, making it a crucial input for farmers. To ensure efficient production and customer satisfaction, it is necessary to calculate inventory control for raw materials for products. In this study, the forecasting method that has the lowest error value is the double exponential smoothing method with MAPE 12% and MAD 17311. Where the forecasting results for each raw material will be used to calculate raw material requirements with the min-max method. The minimum stock levels for Ammonia (NH3) are 3,981 tons; Sulfuric Acid (SA) 8,391 tons; Phosporic Acid (PA) 6,037 tons; DAP 16,578 tons; KCL 64,859 tons; ZA 9,485 tons; and Urea 114 tons. The maximum stock levels for Ammonia (NH3) are 5,292 tons; Sulfuric Acid (SA) 11,147 tons; Phosporic Acid (PA) 8,243 tons; DAP 8,243 tons; KCL 109,823 tons; ZA 12,312 tons; and Urea 169 tons.
Analysis on Effects of Process Parameters CNC Flame Cutting on Dimensional Inaccuracy Using Taguchi Method and ANOVA Prasetya, Reihan Rafly; Tranggono
Journal Knowledge Industrial Engineering (JKIE) Vol 12 No 1 (2025): JKIE (Journal Knowledge Industrial Engineering)
Publisher : Department of Industrial Engineering - Universitas Yudharta Pasuruan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35891/jkie.v12i1.5892

Abstract

Carbon steel is a primary material in various engineering applications that require cutting accuracy to maintain product quality. Advances in flame cutting technology in the manufacturing industry highlight the importance of understanding proper parameter settings. Incorrect parameter adjustments can lead to inaccuracy, material defects, and increased operational costs. In this study, the Taguchi method combined with ANOVA will be used to optimize dimensional inaccuracy in the CNC flame cutting process on SS400 steel plates. The effects of variations in cutting parameters, including cutting speed, gas pressure, and oxygen pressure, on the dimensional inaccuracy of the cut were identified. The analysis results show that gas pressure is the most influential parameter, with a contribution of 86.31%, followed by cutting speed at 6.06% and oxygen pressure at 2.42%. The optimal parameter combination for minimizing dimensional inaccuracy was found at a cutting speed of 319 mm/min, gas pressure of 4 bar, and oxygen pressure of 6 bar. These findings highlight the importance of adjusting gas pressure to improve cutting accuracy and reduce operational costs and time at PT XYZ.
Co-Authors -, Dira Ernawati A Zulfia Da’iyatu Rohmah Afiady Fitsal Ubaidillah Afita D. Parastiwi Afrul Mufdi T Ahmad Baheshti Ahmad Zidane Albany Ahyaliya, Marsya Laila Akmal Suryadi Albertus A. S. Prakosa Alfian Fakhri Amriel, Egan Evanzha Yudha Andhini Ayu Widyasti Aneke Putri Nadila Araminta, Calyca D. Arya Dany Ardhiansah Bintara Putra Dicya Danendra, Raffi Dira Ernawati Dita Putri Mayangsari Donoriyanto, Dwi S. Dwi Sukma Donoriyanto Emon Leonardo N Endang P. Widjajati Endang Sholihatin Ergilia N. Cholifah Erlina Purnamawati Favian J. Prastian Febby Ficha Shekina Fiki Marchel Perdana Fitriatus Sholeha Grandhika Pratama Widiyarta Nugraha Hayati, Kinanti R. Hayati, Kinanti Resmi Ihdinassayyida Eliza Islami, Mega Cattleya Prameswari Anissa Jordyan A. Cahyono Jovansa N.K. Dheva Juniarto, Daniel Dwi Kinanti R. Hayati Kinanti Resmi Hayati Krisnayana Pranata Laily, Nisfal M Satria Adiyatma Nugraha Maghfur, Maula A. Moch. Tutuk Safirin Mohammad Nailul Falah Nadya Novianti Ramadhani Nanang Haryono Nur Cholifah Sastya Nur Rahmawati Nurul Faizah Prasetya, Reihan Rafly Prastiwi, Afita D. Premadi R Putra Putri, Shelany Andhika Raden S.M. Setiaji Radityo Anggoro Ramadhan, Noviar Rizky Rara Mulya Novitri Rauhul Rahman Adam Riyadi, Attila Daffa Rizki Meidianto Rusindiyanto Sandrina Wielda Sasmito, Zinedine A. Simon B.S. Purba Siti Wahyu Nida Sudarman, Kezia G. Sunardi Teo Billy Chandra Yunanto Tino Aprilyanto Wiranty Tiara Wijaya Siagian Yanita Vidya Pramesthi Yekti C. Winursito Yekti Condro Winursito Yohanes Nababan Zulfamil Ulum