Global technological developments continue along with the era of globalization. Apart from that, currently all our needs can be reached easily, including in the field of transportation technology. One mode of public transportation that is already operating in Surabaya is the Suroboyo Bus. The Suroboyo Bus offers various facilities including handgrips for passengers. However, in reality the handgrip is considered to lack ergonomics and many Suroboyo Bus passengers complain of discomfort when using it. This research distributed questionnaires, Of the 30 respondents, 40% of respondents have the potential to experience injury with a low risk level and 60% of respondents have the potential to experience injury with a moderate risk level. This research was carried out using the Rapid Upper Limb Assessment (RULA) method and simulated using jack software. It can be concluded that Suroboyo Bus needs to develop handgrips so that the height of the handgrip straps can be adjusted to the height of Suroboyo Bus passengers and their comfort level. In addition, the handgrip can be adjusted to the shape of human fingers and is coated with foam to minimize complaints or injuries such as muscle cramps, tingling and numbness.

The electric power system consists of three main components, namely the generation, transmission, and distribution systems. The main problem that often occurs in distribution systems is voltage drops and power losses. So an effort is needed to overcome these two problems, one of which is by installing a small-scale generator or commonly called distributed generation (DG) in the electricity distribution system. To get optimal results, we need a method that can solve problems that are optimization in nature. In this final project Genetic Algorithm (GA) is a method used to solve a value search in the optimization problem of determining DG capacity. From the results of capacity optimization, the most optimal results are obtained in scenario 3 with the number of DG 3 and a power factor of 0.95, the optimal capacity results for DG are 1057.52 kW, 1203.01 kW, and 1159.37 kW respectively. To produce a total power loss value of 54.495 kW.

Students who are writing a thesis often experience difficulties. The difficulties faced are diverse, ranging from a lack of understanding of the phenomenon being studied, a lack of mastering the theory, limited references, and so on. This will cause a mental burden that impacts student fatigue which causes a decrease in efficiency, endurance, and work capacity. The research was conducted at the Industrial Engineering, Faculty of Engineering, Muhammadiyah University of Cirebon. This study uses the NASA-TLX and CVL methods which aim to measure the physical and mental workload of the final project students at the Industrial Engineering Study Program and make proposals for improvement and comparison of the results of physical and psychological workload scores. The results showed that the NASA-TLX score load on mental demand, physical demand, temporal demand, performance, effort, and frustration level was 79.37, 59.61, 65.5, and 64.5. CVL score load obtained physical workload value 6 students have CVL value of 30% - 60% which falls into the category of needed improvement. There are 14 students with a CVL value of 30% falls into the category of no fatigue. After being given recommendations for proposed improvements, the results of CVL 6 students have decreased CVL results. Based on the results of the two methods, CVL is more dominant than the results of the NASA-TLX method. Proposed improvements given to reduce mental and physical workload are a closed workspace layout, providing music, and conducting ESQ training.

The container yard is one part of the dock terminal that stores containers. The busier a dock is linear the higher the need for a container yard. So good planning is needed with a long service life. Stackers and containers reach the influential loads in container yard concrete slab planning. The weight of the reach stalker which reaches 71.8 tons and the weight of the container reaches 6 tons /m2 is an important reason to analyze how thick the safe pavement is for these loads which continue to increase along with the increase in the busyness of a pier. This study analyzed the thickness of the concrete slab and the subsidence that occurred in a container yard of 1.36 Ha with a container area of 20 feet. The analysis was carried out with a concrete quality of 30Mpa and the calculation of soil subsidence was analyzed using a geogrid that helped maintain soil stability. The results of this study obtained a safe pavement thickness of 35cm with a safe decline following SNI 8460: 2017 standards regarding soil settlement.

The construction of a Remotely Operated Vehicle (ROV) has become crucial because it should be strong enough to withstand high water pressure, it makes the price of ROV become high. The need for water quality assessment is also increasing due to it will improve quality of human life. In this paper, we propose a low-cost ROV equipped with a pH sensor for Water Quality Assessment by using six DC motors and a microcontroller as the primary control system. Motor movements are governed using a joystick, which serves as the reference input for the PID control. Additionally, this ROV is equipped with a depth sensor to maintain its depth. Through the conducted tests, this ROV has demonstrated the capability to dive to a depth of 2 meters, with a dive duration of 5 minutes. The proposed ROV is expected to be an alternative solution for developing a low-cost water quality assessment robot.

Fulfillment of food needs at this time must be done independently. The hydroponic method is an alternative as an efficient additional food fulfillment. This method can be done anywhere without depending on the area of land. In the process of growing with the hydroponic method, you must be able to control the temperature, humidity, PPM, and pH of the water. The application of conventional hydroponics has not yet provided optimal results. Smart hydroponics is a step in implementing technology to facilitate monitoring and control. This smart hydroponic method will carry out a monitoring and control process on pH, temperature, humidity, and PPM. The stability of the several variables that determine the growth and development of these plants will provide maximum quality and quantity of results. The stability of the raw water pH using the smart hydroponic method can be maintained between 5.5 – 6.5. In this smart hydroponic method, the average temperature can be controlled not to exceed 250° C. The next requirement is that PPM can be controlled according to the type of plant and also the age of the plant in a stable manner. The need for PPM in the application of smart hydroponics is controlled between 1050-1400. Of the several variables that can be maintained according to the needs of these plants can increase the quality and quantity of plants. This is proven in one of the plants that has been tested (kale kale) by applying the smart hydroponic method, it can be harvested in a range of 2-3 days faster with conventional methods. With these results, you can get an increase in the quality of a shorter planting time of 5 - 10% compared to conventional hydroponic methods.

This research is looking for an opportunity to develop building materials modules that unite architectural and structural components as an initial stage of understanding building material modules, considering be first known and developed. Explore knowledge about architectonics as a basis for the development of the modular design of building materials as part of architectural design. Perform a graphical simulation, analyze the enclave as a perfect spatial shape by providing a combination of openings, and then be able to vary the possible of and sub-space formed. It follows the properties of enclosed space where there are 8 points, 12 lines, and 6 planes as the main architectonic elements of RISe-UP. Lines and Points are part of the building elements to be developed in this study. In responding to disaster events with stages; Emergency Response Phase, Rehabilitation Phase, and Reconstruction Phase, and RISe-UP can follow these conditions. RISe-UP at the disaster response stage after entering the rehabilitation and reconstruction stage, the RISe-UP can be adjusted to permanent.

Motorized vehicles are the most frequently used mode of transportation in everyday life. Of the many types of vehicles, motorbikes are one of the most popular vehicles among the middle and lower middle class due to their minimalist design, fairly affordable prices and efficiency. With the increasing number of consumers using motorized vehicles, the need for fuel is becoming increasingly high, where there is a phenomenon of wasting energy, especially fuel oil (BBM). Realizing this, a lot of research and development has been carried out to streamline the energy used in petrol motorbikes, one of which is by adding bio-additives turpentine oil and ethanol to pertalite fuel. This research was carried out by testing on a dynamometer engine which was then collected in the form of recorded data to determine the composition of turpentine oil and/or ethanol in the pertalite mixture which produces optimum engine performance. From testing and data analysis, it was concluded that the addition of turpentine oil and ethanol could produce the most optimal torque of 10.97 N.m and power of 9.81 hp, higher than without any mixture or 100% pure pertalite. Likewise, the addition of this composition reduces engine fuel use because the highest savings occur in the mixture composition P: 70%, T: 10%, and E: 20% at 5500, 6000, 6500, 7000, and 7500 RPM with average consumption amounting to 0.3774 L/h compared to without any mixture or 100% pure pertalite which has a higher average consumption of 0.5836 L/h.

Mining planning starts with calculating mining reserves, making a graphical analysis to find out the Stripping Ratio limits, and making a mining sequence design in accordance with the production target. Then, making a forecast of the need for mechanical equipment and finally create a mining scheduling by software. Based on the existing pit at the boundary of Sequence and the southern limit of the Stripping Ratio area in 2023 it is obtained that as 12 units for loading and 24-30 units for hauling. 1 unit of hauling equipment for overburden and 3 units of hauling equipments for coal. Pit design can be planned to be 4 quarterly. It can be known the estimated total coal reserves are 4,066,102 MT, Overburden 5,336,787 CCM, with a stripping ratio of 1.34 bcm/ton with an open pit area of 40.93 Ha. Design of disposal located in the northern area. Design of Pit with an average distance of 1200 Meter. The total disposal capacity based on design is 5,651,877 CCM with an area of 35.25 Ha. This condition can accommodate the entire 2023 Pit area.

A portable rocket motor test stand serves as the apparatus to evaluate the performance of rocket motors under controlled conditions. This equipment is crucial for assessing the thrust of the RX 200 rocket motor and examining the capabilities of various components, including the tube, propellant, insulator, igniter, nozzle, and rocket cap itself. Before conducting the RX 200 rocket flight test, a preliminary assessment using this equipment is essential. Therefore, the design of a rocket motor test stand must be carefully calculated to ensure that the tool functions as desired. In this study, thrust force variations of 10,000, 12,000, 14,000, and 16,000 N were applied. The portable rocket motor test stand utilized Aluminium 6061-T6, known for its low density, corrosion resistance, and moderate strength. Finite element analysis was conducted using Ansys Workbench software. The results of the fatigue simulation reveal that the portable rocket motor test stand fails to achieve a service life of 1 million cycles at a thrust of 16,000 N.