Jurnal METRIS

Automatic Patient Injection Robot With 6 Degrees of Freedom by 3D Simulation Using Webots Software

Ardiansyah Ramadhan, Andre Suwardana Wijaya, Fikri Achdan — Mon, 27 May 2024 00:00:00 +0200

The manipulator robot is one of the most widely used robots in the industry. The movement of the robot manipulator in this sector is a mechanical system that requires a mathematical modeling method to represent its geometric aspects and manipulate its dynamic parts. One of the most critical industries is healthcare. In this paper, a simulation is carried out on one of the factors, namely patient injection. The research results from this simulation used Webots software and was successfully simulated using a 6-degree-of-freedom robot. The positions simulated in several movements include: gripper position opens to take the needle, gripper closes to take the needle, the needle is held and directed to the patient, the needle is inserted into the patient area and pulled out again, returning to its initial position by placing the needle. However, this simulation does not add a needle so that only the 3D simulated robot movement can move by entering the expected position value to inject the patient according to the target.

Penentuan Setting Optimal Mesin Injection Moulding Menggunakan Metode Response Surface

Trifenaus Prabu Hidayat, Andre Sugioko, Catherine Williana — Mon, 27 May 2024 00:00:00 +0200

PT. Medion Farma Jaya is a company that produces livestock equipment, parts, and plastic packaging. One of the products produced by PT. Medion Farma Jaya is a 5-CC measuring spoon. This mass production process is based on what the company needs to package it with other products, or that can be from customer orders. This research is focused on the 5 CC measuring spoon product (SEN5CC) because, according to the company's 2021 historical data, there is a large percentage of rejected or defective products. Because of these problems, things can be done. The effect on the response to defective products is the setting of the injection Moulding machine by trial and error. Therefore, this research aims to find optimal settings for the machine for injection molding so that it can improve the quality of the product. To find out the optimal settings in this research, the response surface method was used. Based on this method is useful for getting the optimal level of factors or parameters that are significant to the response results. Based on research results, the factors used significantly influence optimal results, namely the melting temperature factor of 260 °C, holding pressure of 30 bar, and injection pressure of 62 bar. Therefore, the predicted response value was -25.1667, which meets the minimum target for the rejected product.

Cultural Influences on Problem Solving and Decision-Making in Student Projects: A Comparative Study between Indonesia and Germany

Fandi Achmad, Widia Febriyani, Raoul Nzefa, Fadma Ahkim, Attouk Rania — Tue, 28 May 2024 00:00:00 +0200

Differences in cultural dimensions across countries can influence approaches and behavior patterns in education. Therefore, this study aims to analyze the influence of culture on problem-solving and decision-making in student projects in Indonesia and Germany. A comparative approach between the two countries identifies significant cultural differences in power distance, individualism, masculinity, uncertainty avoidance, long-term orientation, and indulgence. The research method used is a qualitative approach with descriptive analysis. Data was collected through interviews and observations of students involved in the project. The study results show that cultural differences affect students' approaches to problem-solving and decision-making. In Indonesia, group cooperation and conformity to social norms play an important role, while independence and critical thinking are prioritized in Germany. The implications of this research are the importance of increasing cultural awareness, developing collaborative skills, increasing independence and critical thinking, and empowering students with cultural knowledge. By understanding cultural differences and taking the right steps, educators can create an inclusive learning environment and prepare students to face the challenges of an increasingly globalized world.

Persepsi Pengguna Sebagai Dasar Pengembangan Model Usability Aplikasi Mobile Commerce

Thu, 30 May 2024 00:00:00 +0200

The intense competition between developers, resulting in efforts to determine users' needs, is increasingly important. Usability An application can affect the continuity of application use. In this study, the user's loyalty is also used to analyze usability. This study examines user perceptions about user interaction characteristics when interacting with the mobile commerce application and considers users' loyalty. This research is essential to find out the needs of users of a mobile commerce application, which can be input to the developer in the design stage. This study uses 149 respondents' online shopping transactions in Jabadetabek and outside Jabodetabek, Indonesia. Data were analyzed using the Structural Equation Modeling (SEM) model. The results showed that users' perception of effectiveness, satisfaction, and learning influenced usability. This model can explain 42.6% of the user's usability variation when using it. This model can explain the usability of the Mobile Commerce application quite well. As a practical implication, this study shows the factors that support the characteristics of user interaction and application systems at the stage of defining the requirements for developing mobile commerce applications.

Perencanaan Produksi Kantong Sampah Plastik Menggunakan Metode Linear Programming Di PT Kharisma Plastik Indo

Nidhya Dwiza Adyasa, Nur Yulianti Hidayah — Wed, 19 Jun 2024 00:00:00 +0200

PT Kharisma Plastik Indo (PT KPI) is a company that produces recycled plastics and cassava-based plastics. The main product produced by PT KPI is trash bags which have 2 variants, namely black and green. Currently, the company is faced with the problem of stacking finished goods in storage. In carrying out the production, the company uses daily targets without looking at historical sales
data. This study aims to estimate the number of trash bag production using the Linear Regression forecasting method, make aggregate production planning using the Linear Programming method, and disaggregate to determine production schedule of each variant with the percentage of sales method. Forecasting demand for trash bag in October 2022 – February 2023 respectively are 10,061 kg, 9,844 kg, 9,627 kg, 9,410 kg and 9,193 kg. The aggregate planning resulted the total production of trash bags in October - December 2022 respectively are 3,999 kg in normal hours, 9,729 kg in normal hours and 115 kg in overtime, and 9,627 kg in normal hours. January – February 2023 in normal hours are 9,410 kg and 9,193 kg. The disaggregation obtained the trash bag
production schedule for October 2022 – February 2023 respectively are 2,131 kg of the black and 1,868 kg of the green, 5,245 kg of the black and 4,599 kg of the green, 5,129 kg of the black and 4,498 kg of the green, 5,014 kg of the black and 4,396 kg of the green, and 4,898 kg of the black and 4,295 kg of the green.

Pemilihan Supplier Kedelai dengan Metode AHP Dan TOPSIS (Studi Kasus UKM Tahu Pak Wit Di Desa Ledok Kulon, Bojonegoro)

Retno Indriartiningtias, Trisita Novianti, Anifatuz Zuhriyah — Mon, 01 Jul 2024 00:00:00 +0200

Raw materials as the most important factors in production activities, are obtained from suppliers. Suppliers are partners who ensure the availability of raw materials for the continuity of the company's production. Therefore, it is
necessary for companies to choose the right supplier. The problem that occurs in Pak Wit's Tofu SME is that SMEs often change suppliers in procuring soybean raw materials because the SMEs do not have a fixed soybean supplier.
This fact results in no certainty of raw materials from the supplier so that SMEs often experience a shortage of quality raw materials. This study aims to select the best supplier according to the criteria set by SMEs. There are 4
suppliers who are candidates with 4 criterias (price, quality, service and flexibility in delivery) used in choosing the best supplier. This research uses AHP to weight the criteria and TOPSIS to rank suppliers. The results of
calculations with AHP found that the quality criteria were the first priority, with a value of 0.58. While with the TOPSIS method it was found that supplier 2 was the selected supplier with the highest preference of 0.941.

Analisis Biaya dan Dampak Lingkungan dalam Proses Produksi Keramik: Studi Kasus UKM ABC

Wed, 03 Jul 2024 00:00:00 +0200

ABC Ceramic Factory conducted the process of producing ceramic floor tiles, distributing them to ceramic shops, and then selling them to consumers. Several processes or stages, from manufacturing to distribution, still leave abandoned waste. This research aims to determine what costs in making ceramics at the ABC Ceramic Factory can be reduced to save on company costs. The methods used are Green Quality Function Deployment and AHP Methods. Based on the data processing results, the ceramic manufacturing process is efficient, and the ceramic color is long-lasting because it has the expected satisfaction values of 0.661 and 0.538. Then, recycling waste is the highest technical response, with a value of 0.24. At the same time, the production process is the stage that produces
the most waste, with a value of 0.29, and raw material costs are the costs that can be reduced the most, with the highest value of 4+2-. Therefore, the ABC Ceramic Factory must improve from the manufacturing process to the final
product.