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Journal of Applied Sciences, Management and Engineering Technology (JASMET)
Published by Institut Teknologi Adhi Tama Surabaya
ISSN : -     EISSN : 27212165     DOI : https://doi.org/10.31284/j.jasmet.2020.v1i1.704
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Journal of Applied Sciences, Management and Engineering Technology (JASMET) is an international peer-reviewed journal that was launched by LPPM ITATS. It is dedicated to provide a high-level platform in all aspect of science, management and engineering technology Scope of the journal: Engineering, Science and Management
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 97 Documents
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SUPPLY CHAIN RISK ANALYSIS IN WHOLESALE PHARMACEUTICAL TRADING COMPANIES USING THE HOUSE OF RISK (HOR) METHOD Junus, Reynaldi; Baihaqi, Imam
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 1 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i1.7253

Abstract

The Pharmaceutical Wholesaler is a legally established company authorized to procure, store, and distribute medicines in large quantities. Numerous issues within Pharmaceutical Wholesalers and their impact on business continuity highlight the need for a structured risk management system to identify and mitigate potential risks in the future. Structured risk management is a crucial component for ensuring the operational sustainability of Pharmaceutical Wholesalers, aiming to identify, analyze, and mitigate risks that may disrupt the supply chain process. This study employs the House of Risk (HOR) method to analyze risks using the SCOR (Supply Chain Operation Reference) framework, which includes the processes of Plan, Source, Make, Deliver, and Return. HOR Stage 1 identifies risk events (RE) and risk agents (RA) and calculates the Aggregate Risk Potential (ARP) value to prioritize risk agents. HOR Stage 2 designs mitigation strategies by considering the effectiveness of preventive actions and the difficulty of implementation. Based on the analysis in HOR Stage 1 through interviews and discussions, scoring was conducted for each risk event, identifying 44 risk events and 13 risk agents. Using a Pareto diagram, 7 major risk causes were identified as priorities for prevention. HOR Stage 2 evaluation resulted in nine preventive actions, with five prioritized actions recommended to control potential risks. These include forming a dedicated monitoring and updating team, developing a clear SOP-based work system, creating supplier diversification strategies, providing regular training, and conducting regular audits or evaluations.
Developing Learning Material for the Development of English Language Communicative Competence of Oil and Gas Logistics Students Sono, Sono; Yunanik, Yunanik; Ardiansah, Nur
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 1 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i1.6814

Abstract

Learning is a process of acquiring knowledge and skills through experience. Leaning is also defined as a conscious process of changing behavior of the learners through their involvement in a learning environment. In order for the learning to occur, there are some factors that play important roles for the success of a learning process . Factors affecting a learning process can be identified as the learners, the teachers and the learning environment. Learning materials is considered a more crucial component in the learning environment compared to other components in learning environment that contribute to the success of a learning process. Learning material should dictate the achievement of the learning objectives. Developing English communicative competence of the students of oil and gas logistics as the goal of English language learning process should be supported by comprehensive learning materials functioning as the learning input for the students. This research is intended as the follow-up action of the previous research on the developing English language communicative competence of the students of oil and gas logistics. The objective of the research is developing a learning materials covering the integrated learning material that include four language skills: listening, speaking, reading, and writing. The learning material will be unique because it will be developed by adopting the real activities in oil and gas logistics activities in the oil and gas logistics companies. It is considered urgent for the preparation of the students by providing  with real and related experience in oil and gas logistics activities. This kind of material is different from other learning material available in the public. Direct observation and interviews with company’s workers of the related activities were used as the main source of the learning material development. The learning material that had been developed was then validated by two experts, English lecturers from English Language Education Department at a University in Semarang. The validation data showed that the initial product was good practical for the development of English communicative competence in oil and gas logistics.
Hydrogen Generator Design Using Motorcycle Electricity Source Septiyanto, Jalu Nur
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 1 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i1.7428

Abstract

The global energy crisis has led to a spike in crude oil prices that has had a significant impact on the world economy. Indonesia, as a country facing a real energy crisis, is experiencing increasing energy consumption and decreasing availability of primary fossil energy. To overcome this problem, people are expected to save fuel by reducing the use of private vehicles. This research aims to develop a hydrogen generator model that uses electricity from motorbikes as an effort to save fuel. The hydrogen generator is designed with several sample models, the first using 4 stainless steel plates, the second 8 stainless steel plates and the third 12 stainless steel plates by connecting two electrolytic cells in parallel. In the experiments, the number of stainless steel anode and cathode plates was varied and the voltage was set at 12 voltages and 6 amperes of current, and tested using 2 methods, namely water and water with baking soda to evaluate the effect on hydrogen production. The results showed a certain trend in hydrogen production related to the variation of the parameters tested and the most effective in this test is 4 plates of water (800 ml) with 10 grams of baking soda and 8 plates of water (800 ml) with 10 grams of baking soda on the manometer gauge an increase of 1 ml.
Vendor Management Model to Achieve Just In Time (JIT) in Material Procurement Heitasari, Dwi Nurma; Pratama, Ibnu Lukman; Revalina, Fanya Aulia
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 1 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i1.6821

Abstract

This research focuses on optimizing material procurement in EPC (Engineering, Procurement, and Construction) Companies by using Always Better Control (ABC) and Analytical Hierarchy Process (AHP) methods to reduce lead time to achieve Just In Time goals. The main problem faced is the long lead time of material procurement, which harms productivity, operational costs, and customer satisfaction. The ABC method was used to classify materials based on their economic value, dividing them into three categories: A, B, and C. The analysis showed that seven category A items (such as Steel Grid and Power Cable) accounted for about 62.62% of the total project cost, requiring strict inventory control. Meanwhile, the AHP method was used to determine vendor selection criteria by considering four approaches: Single Item Single Vendor (SISV), Single Item Multi Vendor (SIMV), Multi Item Single Vendor (MISV), and Multi Item Multi Vendor (MIMV). Weighting criteria through a questionnaire with 13 respondents resulted in MISV as the highest criterion (43.70%), followed by MIMV (34.30%). The validity test using consistency ratio (CR) resulted in a value of 0.06, indicating the consistency and reliability of the data. The study concluded that combining ABC and AHP methods can help EPC Companies optimize the material procurement process, reduce lead time, and improve operational efficiency. Choosing the proper vendor management model and focusing on critical items can help mitigate the risk of delays and support the smooth production process
Evaluation of Diesel Fuel Product Quality During Storage Processes Using Qualitative Statistical Methods Akbar, Muhammad Aly; Navira, Faysa Wintang; Nova, Rio Adrian; Kemong, Juakem; Venriza, Oksil
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 1 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i1.6784

Abstract

Fuel quality greatly affects engine performance and emissions, making it essential to routinely test its physical characteristics. This study aims to analyze fuel quality by measuring ash content, density, specific gravity (SG), and API gravity of various types of fuels used in Indonesia. The study also evaluates the stability and consistency of fuel quality through repeated tests and identifies the characteristics of each fuel that affect combustion and engine performance, providing recommendations for the most optimal fuel based on the test results. The research was conducted at the PEM Akamigas Quality Control Laboratory to test fuel samples through laboratory analysis using specified equipment and materials. The tools used include filter paper, beakers, volumetric pipettes, funnels, porcelain and optical crucibles, supported by an analytical balance, tweezers, bulb, oven, desiccator, and aluminum foil for various testing stages. The fuels tested include Pertamax Turbo 98, Pertamax 92, X mix (92 mix 98), biosolar, Fatty Acid Methyl Ester (FAME), and Dexlite mixed with FAME. The results of the study show that FAME, Biosolar, and Dexlite have ash content characteristics that affect combustion and engine performance. FAME supports consistent combustion with medium and stable ash content. Biosolar produces environmentally friendly combustion with the lowest ash content, while Dexlite has the highest ash content with high consistency but may leave residue. Pertamax Turbo and Pertamax show high stability and consistency in density, SG, and API gravity, making them reliable fuels for various usage conditions.
Determining the Best Zone for Waste Storage Ponds: Integrating DEM analysis and Satellite Gravity data in the Prospect Area of Ungaran Geothermal Mining Working Area, Semarang, Indonesia. Humairoh, Wahyuni Annisa -; Mardiati, Dani; Ambara Putra, I Putu Raditya
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 2 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i2.8194

Abstract

The Ungaran Geothermal Mining Working Area, Mount Ungaran, has geothermal prospects around the Gedongsongo and Nglimut areas, which have the potential to develop as Indonesian geothermal exploration projects. The challenges in developing geothermal exploration projects in Indonesia are the PLTP sector, which generates geothermal waste in the form of brine and geothermal mud. If discharged into the environment, this waste can pose a threat to human health and ecosystems. This study aimed to specify the most suitable zone for waste storage ponds in the Ungaran geothermal prospect area. The method integrates data analysis of Digital Elevation Model (DEM) imagery, Landsat imagery, and air gravity data, which produces integrated maps, such as Maps of Fault and Fractures density and Maps of Land Cover. Second vertical derivative (SVD) analysis from air gravity data is also used to ensure the presence of a structure. There are five parameters for determining the pond-making zone: Not a residential area with a slope of less than 15%, distance from the fault is more than 200 m, distance from the road is more than 100 m, and distance from areas of geothermal manifestations such as hot springs and fumaroles is more than 200 m. Based on the interpretation of the integrated maps resulting from the analysis, several zones are suitable for creating waste storage ponds in the Nglimut and Gedongsongo prospect areas. The Nglimut area has potential zones, in contrast. In the Gedongsongo area, there are no potential zones. The Nglimut prospect has two possible zones; the best zone is N2, where all five parameters are perfectly satisfied. The northern area of N1 has one geothermal manifestation (hot spring). The best-to-fair zones are N2 and N1.
INNOVATION IN PROCESSING INORGANIC ORGANIC WASTE IN CIBENDA VILLAGE PARIGI DISTRICT PANGANDARAN DISTRICT Syahril, Syahril; Simbara, Adam; Boy, Gasper; Arifhan, Rafly Fadhilah; Margana, Riki Ridwan
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 2 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i2.7497

Abstract

Waste management is a significant challenge faced by many regions, including Desa Cibenda. Population growth, urbanization, and changing consumption patterns, waste management issues have become increasingly complex. This study aims to analyze waste management in Desa Cibenda, identify key challenges, and propose sustainable solutions. Several challenges were identified, including the lack of adequate waste disposal facilities. Inefficient management methods such as burning, low public awareness regarding waste separation, and economic limitations hindering investment in waste management. As a result, a large amount of waste is disposed of improperly, polluting the environment and reducing recycling potential. Desa Cibenda covers an area of 759.319 hectares, with a population of 8,229 people in 3,028 households, generating an average waste volume of 1.67 kg/person/day. Waste composition data from segregation showed 150 kg/day. Measurements were conducted using the load count analysis method, with three-wheeled vehicles that have a capacity of 200 kg/m³ used for waste transportation. This study recommends the procurement of a waste shredder to enhance the efficiency of organic and inorganic waste management. Other recommendations include providing adequate waste management facilities, educating the community on waste separation, and adopting community-based approaches to raise awareness and establish sustainable waste management practices.
Application of Point Counting Petrography for Provenance Determination; Implication for Tectonic Development from the Semilir Formation, Gunung Kidul Krisnabudhi, Alfathony; Rizky, Aga; Farisan, Ardhan; Isnani, Desi Kumala; Widada, Sugeng; Ardine, Joseph Emmanuel; Aiman, Muhammad Naufal; Tony, Brian; Mardiati, Dani
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 2 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i2.8198

Abstract

The provenance sediments have been analyzed to reveal tectonic development during the Semilir Formation deposition in the Southern Mountain of Yogyakarta area, using essential samples from field observation, petrography analysis, and the point counting method. Outcrop and sampling at two observation points revealed distinct lithological features, including sandstone and siltstone with mudclast structures and slump structures interbedded with siderite. Petrographic analysis using the point-counting method determined the mineral composition of four samples: 1A, 1B, 2A, and 2B. Samples 1A and 1B were categorized as Lithic Wacke, 2A Feldspathic Wacke, and 2B Lithic Wacke. Provenance analysis, crucial for understanding the sedimentary history and reconstructing the geological events preceding sediment deposition, identified that the sandstones in the Ngoro-oro region predominantly fall into the magmatic arc category. Hence, based on our analysis, the tectonic development during Semilir Fm deposition is linked with the convergence event of the first subduction on southern Java, which had huge volcanic influences and slope morphology common in volcanic areas. The findings of this study contribute to a deeper understanding of the tectonosedimentary processes and geological history of the Ngoro-oro region. The integrated approach of petrographic and provenance analyses provides a comprehensive view of the sedimentary rocks formation and evolution, enriching the geological knowledge of the area.
Application of Design Thinking (Double Diamond Framework) and Optimization Methods for Optimizing the Supply Chain of Multinational Cigarette Companies Using Value Stream Mapping Tools Lomarga, Zefano Valery
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 2 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i2.7755

Abstract

This research examines the supply chain optimization strategy of a UK-based multinational cigarette company with manufacturing plants in Indonesia, with a primary focus on improving operational efficiency and sustainability through the application of a Design Thinking approach using the Double Diamond framework, optimization methods, and Value Stream Mapping (VSM) tools. The project is aimed at addressing a number of complex challenges in the supply chain, including high material costs, manufacturing inefficiencies, SKU complexity, and distribution and logistics inefficiencies. With the selection of a strategic end-country market that contributes more than 25% of the company's total volume (worth GBP 5 million in working capital), a thorough mapping of the current process and waste identification was carried out using a lean approach. The Discover and Define stages were used to explore the root causes through fishbone analysis and VSM, while the Develop stage designed solutions based on optimization methods such as Greedy Algorithm for material procurement, Simulated Annealing for production scheduling, and Mixed Integer Linear Programming (MILP) for logistics and transportation. The implementation of the Deliver phase solution resulted in production cost savings of more than GBP 2 million, cash flow release of GBP 15 million, improved customer service, and carbon emission reduction of up to 10%. The study confirms that the integration of Design Thinking approach, optimization methods, and Lean-Circular principles can improve operational efficiency and meet sustainability targets in a measurable and applicable manner.
Grain Maturity and Sedimentary Processes of the Early Miocene Semilir Formation, Ngoro-oro Gunungkidul, Yogyakarta Rizky, Aga; Isnani, Desi Kumala; Widada, Sugeng; Pratomo, Septyo Uji; Tony, Brian
Journal of Applied Sciences, Management and Engineering Technology Vol 6, No 2 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2025.v6i2.8185

Abstract

The texture of sedimentary rocks is a fundamental aspect of sedimentation, reflecting the physical properties of particles and their relationships. Understanding rock texture is essential for interpreting depositional mechanisms and environments. Grain maturity represents a key property within sedimentary textures. The Early Miocene Semilir Formation is characterized by turbidite deposits with tuffaceous lithologies; however, the transport mechanism remains unclear. This study aimed to analyze the sedimentation process of the Semilir Formation by observing grain maturity. Granulometric analysis was conducted on three rock samples from the Ngoro-oro area, Gunungkidul Regency, Yogyakarta. The samples were ground, separated into size fractions, and statistically evaluated to determine quartiles, median diameter, sorting coefficient, skewness, and kurtosis. The results showed that the Semilir Formation consisted of immature grain sedimentary rocks, indicating that the sediments were deposited under moderate to high energy conditions. These findings suggest that the deposits were derived from a nearby source and were strongly influenced by volcanic slopes and underwater volcanic activity.Keywords: Grain maturity; Granulometric analysis; Sedimentary process; Semilir Formation

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