The presence of recycled plastic materials for the 3D printing process expects that the production process will be more environmentally friendly and solve the problem of plastic waste globally. However, recycled plastic as a filament material in the 3D printing process is still limited. One of the ways to make recycled plastic filaments is by extrusion. This research aims to optimize the extrusion process parameters in the manufacture of recycled plastic filaments (Polypropylene) that have never been conducted before. The extrusion process was analysed using the Taguchi and ANOVA methods. The results of this study indicate that the spooler speed of 4 rpm, extrusion speed of 40 rpm, and extrusion temperature of 200°C in the parameter setting produce an average filament diameter of 1.6 mm. However, filaments made from Recycled Plastic (Polypropylene) have a rough and easily curved surface, so further research is needed.
Research on smoked fish packaging has only focused on its functional side to increase product life. Meanwhile, research on smoked fish packaging design that focuses on improving and expanding markets has never existed. Until now, smoked fish was sold without packaging even though the amount of production continued to increase. The purpose of this study was to determine consumer preferences for the design of smoked fish packaging. With the recognition of these preferences, it is expected that the smoked fish industry players can apply it so that it can increase the sale value and the number of sales. This study uses focus group discussion as a qualitative method and conjoint analysis as a quantitative method. Color, material, shape, size, brand, and additional information is the attribute chosen at the focus group discussion as a representation of smoked fish packaging to determine the level of its preference. The results of this study indicate that brands have the highest preference compared to others (importance values 30.303%).
The distribution of fuel in Pertamina co. Ltd Yogyakarta region is carried out using three types of vehicles, namely vehicles with a capacity of 32 kl, 24 kl, and 16 kl. In determining the distribution route, the operator chooses the gas station based on the first order and the type of vehicle determined based on the vehicle’s ability to maneuver at the gas station. The determination of the route has not taken into account the time that affects the distribution, such as average speed, loading time, discharging time, and the time limit for completing the tour. So when in the high demand for fuel distribution, three gas stations are delayed from 29 gas stations in cluster I. This study analyzes the distribution of fuel in cluster 1 for Premium and Bio-Solar products. In determining the distribution route and distribution time using the VRP method by considering Heterogeneous Fleet, Split Delivery, Multiple Products, Multiple Trips, and Time Windows. The calculation is done using sequential insertion, where the selected customer is based on the smallest CT. The results of this study indicate that after processing, it was found that late customers were reduced to 1 in 3 late customers. Total mileage was reduced to 693.3 km from 701.5 km. The total tour completion time was reduced to 71, 819 hours from 81, 819 hours, and distribution costs increased to Rp. 20, 754, 119, 875.00 from Rp. 18, 511, 210, 625.00.
Robot rehabilitasi pasien pasca stroke saat ini telah dikembangkan oleh negara-negara maju di dunia, tidak terkecuali Indonesia meskipun sebagai negara berkembang. Salah satu pengembang robot rehabilitasi pasien pasca stroke itu berada di Universitas Gadjah Mada yang telah melakukan penelitian beberapa tahun ini. Penelitian ini bertujuan untuk mengidentifikasi kepentingan relatif konsumen terhadap robot rehabilitasi pasien pasca stroke untuk kemudian digunakan sebagai bahan masukan dalam pengembangan robot selanjutnya. Metode yang digunakan dalam penelitian ini adalah Conjoint Analysis. Metode ini memiliki keunggulan dalam menganalisis trade off antar atribut. Dari hasil pengolahan Conjoint Analysis dengan bantuan program SPSS, dapat diketahui bahwa kebutuhan konsumen paling tinggi terhadap robot rehabilitasi pasien stroke adalah dapat dipasangkan ke tangan pasien dengan mudah, baru setelah itu kemampuannya untuk dipakai di kedua tangan (kanan dan kiri) dan material yang digunakan dalam pembuatan robot haruslah aman bagi pasien.AbstractPost-stroke rehabilitation robot has been developed in the world, including Indonesia as a developing country. One of this robot developers is Universitas Gadjah Mada who has conducted research for post stroke rehabilitation robot in recent years. This study aims to identify the consumer’s relative importance of the post-stroke rehabilitation robot that can be used for the next robot development. The method used in this study is Conjoint Analysis. This method has the advantage in analyzing trade-offs between attributes. From this research, we have known that the highest rank of the robot consumer needs are: can be attached to the patient's hand with ease, the ability to be used in both hands (right and left) and the movement of the robot which can be varied according to the needs of the patient.
Produk hasil pengolahan ikan, terutama ikan asap di Indonesia terus meningkat dari tahun ke tahun. Peningkatan jumlah produksi ikan asap ini harus diimbangi dengan peningkatan kualitasnya agar dapat bersaing di pasar bebas ASEAN (MEA). Selama ini produk ikan asap dalam negeri kurang begitu diminati oleh konsumen serta identic dengan tingkat higienitas dan aspek sanitasi yang kurang baik. Untuk itulah perlu dilakukan identifikasi terhadap kebutuhan konsumen ikan asap untuk dapat meningkatkan kualitasnya. salah satu caranya adalah dengan menggunakan metode QFD (Quality Function Deployment) yang selama ini telah sering digunakan. Dari hasil penelitian yang dilakukan, didapatkan hasil bahwa variable yang paling fiinginkan dan dibutuhkan konsumen adalah kebersihan dan keamanan untuk dikonsumsi. Sedangkan untuk karakteristik teknis pada ikan asap yang perlu untuk dikembangkan lebih lanjut adalah sistem pengemasannya.
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