Journal of Engineering Design and Technology

Therefore, research related to the analysis of the performance of signalized intersections is very necessary. The determination of the level of service at the intersection can be determined based on the delay [10].

Table 1. Intersection Service Level Based on Average Delay.

CONCLUSION

VISSIM evaluation on this observation is an evaluation of the results by comparing queue length and vehicle delays at intersections. Based on the results above, it is necessary to adjust the length of the green time and the cycle time to solve the performance disadvantage of the Jatikarya junction.

In this observation, traffic management was performed as one of the answers to research problems. The intersection optimization is performed using the menu Optimize all fixed time signal controllers within the VISSIM program.

DESIGN AN AUTOMATIC TRANSFER SWITCH FOR SOLAR POWER PLANT

INTRODUCTION
METHODS
RESULTS AND DISCUSSION
ACKNOWLEDGEMENT
REFERENCES

But the inverter standby mode has a weakness, which is the use of batteries to supply the inverter faster, because the battery is forced to continuously supply power and heats up quickly. While the inverter off mode is not recommended for electrical loads using Power Switching Low Energy technology, because long-term use may damage equipment due to unstable voltage when the inverter operates after the switching process in the ATS circuit.

Risk Analysis of Investment Costs in PPP Projects Using Monte Carlo Simulation

Evaluation of Influential Risk for the Investment Cost

Based on the analysis, it was found that the total risk value of the project is Rp, where the risk with the highest value is the risk of construction completion. Based on the distribution of risks, it is established that the public sector received a higher allocated risk value than the state, in other words, states can get help in the distribution of the budget burden according to the amount of assumed risk and risk. sharing with the PPP scheme.

Reduction of Risk Value on Dominant Risks

Using the data from the expert questionnaire, 12 risks can be allocated to the government or with a risk value of Rp. A total of 26 risks have a high risk factor value (0.7080) so the risk factor reduction should be performed at a lower level to give a better benefit to each sector in terms of risk value.

Risk Allocation and Mitigation Strategies

The lack of cash flow at the start of the operation resulted in the project being financially sustainable but not viable [operational phase]. For risks triggered by government actions (political policies and policy changes), minimum demand assurance may be considered at the beginning of the engagement.

ANALYSIS OF THE USE OF ERGONOMIC TROLLEY ON MUSCULOSKELETAL COMPLAINTS ON WORKER

TRANSPORTING GALLONS OF WATER AND LPG 12 KG

METHODS 1. Research Design

Research Variable
Data Analysis
Lifting Gallons And Lpg Gas Manually
Trolley Design Model

This research was carried out with an experimental design of the working process of a gallon elevator and LPG gas [6][7]. Basically, the creation of this tool aims to simplify the work process of workers. The product of this trolley design is supposed to improve the health and work efficiency of the workers themselves.

Every person works, regardless of the type of work performed, the muscles of the body will certainly alternately contract and relax [10][13]. The more the body's attitude towards the neutral posture of the body, the more the muscles work. Which type of muscle is affected depends on the severity of the task and the monotony of the movement.

CONCLUSION

This study agrees with other researchers who state that ergonomic aids can reduce muscle complaints and work fatigue and even increase work productivity [18]–[20]. Manuaba, “Accelerating the OHS ergonomics program by integrating 'built-in' within the industry's economic development program is a must, with a special focus on small and medium-sized enterprises (SMEs),” in Proceedings of the 21st Annual Conference of the Asia Pacific Occupational Safety & Health Organization, 2005. Yusuf, “The Application of a Drier Solar Hybrid to Reduce Workload and Increase Dodol Production in Bali”, Int.

Yusuf, “Improving Wok Casting Station Increases Work Comfort and Productivity for Workers,” Int. Anom Santiana, "Improving Environment and Work Position Through Ergonomic Approach to Increase Productivity of Balinese Kepeng Coins in Kamasan Village Klungkung Bali," in Journal of Physics: Conference Series, 2018. Yusuf, "Design of Jewel Stone Sharpener to Increase Jewel Worker Work Productivity in Bali,” in International Conference on Engineering, Technology, and Industrial Application (ICETIA), 2014, p.

LOGIC

THE EFFECT OF SODIUM HYDROXIDE ABSORBENT ON THE EXHAUST EMISSIONS FROM INTERNAL

COMBUSTION ENGINE

Experimental Set up

The NaOH solution is prepared by dissolving solid NaOH in 1 liter of distilled water and then diluting it to a volume of 5 liters. The data was collected based on measurements of exhaust emissions before and after entering the exhaust gas reduction system.

RESULTS AND DISCUSSION 1 Reduction of Exhaust Emission

The design of the internal combustion engine exhaust emission reduction system is shown in Figure 2. Based on Figure 4, the CO emissions after entering the emission reduction system decrease with increasing absorbent concentration. The results showed that there was a large reduction in CO2 emissions after entering the exhaust emission reduction system.

Based on Figure 6, HC emissions also show a decrease in emissions after entering the exhaust emission reduction system. The effect of the absorbent concentration can be the efficiency of the exhaust emission reduction device as shown in Table 5. The exhaust emission reduction system of the internal combustion engine with NaOH absorbent in this study can reduce the exhaust emissions of the engines with internal combustion.

Figure 2. Reduction system of Internal combustion Engine Exhaust Emission

THE EFFECT OF CURRENT AND LAYER IN

BIMETALLIC WELDING USING J4-AH36 FILLER ON TENSILE STRENGTH

A used in TIG welding for 1 layer and 2 layers Figure 4 shows that the tensile strength at the minimum value is 400 MPa and the maximum value is 460 MPa, and the minimum is in the 2nd iteration at the welding current of 60 A and one layer. Nevertheless, for two layers, the tensile strength value is a minimum of 402 MPa and a maximum of 424 MPa. This shows that the results are close to the tensile strength results in one layer and two layers, which means that between 1 layer and two layers, the tensile strength results are good with flux 70 in TIG welding, bimetallic welding of AH36 steel and J4 stainless steel.

The tensile strength and the replication for 80A used in TIG welding for 1 layer and 2 layers Figure 6 shows that the tensile strength is at a minimum value of 412 MPa and a maximum of 437 MPa, and the lowest is in the 2nd replication at a welding current of 80 A and a layer. This shows that the results are quite different and lower between the tensile strength results in one layer and two layers, which means that between 1 layer and two layers the tensile strength results are quite good with current 80 A in TIG welding bimetallic welding of AH36 steel and J4 stainless steel. Therefore, the tensile strength of the weld with a bimetallic filler rod is compared with a lower value, namely the tensile strength of AH36 steel.

Table 2. The composition of combined filler rod of AH36 steel and J4 stainless steel [19]

EFFECT SIZE OF MATHEMATICS BLENDED LEARNING DESIGN ON INCREASING

MATHEMATICAL PROBLEM-SOLVING ABILITY OF POLYTECHNIC STUDENTS IN THE COVID-19

PANDEMIC PERIOD

Blended learning is learning that combines the benefits of face-to-face learning and online learning. The blended learning model with the Schoology application is quite effective in improving mathematical problem solving skills. The blended learning model is more effective at improving mathematical problem solving than the full e-learning model.

The application of the blended learning model in polytechnic education can help students achieve 21st century skills. The blended learning model is more effective in improving mathematical problem solving skills than the full e-learning model. Ahmadi, "The effectiveness of reading English learning process based on blended learning through 'Absyak' website media in higher education," Budapest Int.

IMPLEMENTATION OF INVERSE KINEMATIC AND TRAJECTORY PLANNING ON 6-DOF ROBOTIC ARM

System Implementation
Robot Specification
Inverse Analysis Method
Trajectory Planning Method
Inverse Kinematic Testing
Trajectory Planning Testing
ACKNOWLEDGMENT

In Figure 6, the MIG welding torch is also installed as the end effector of the robotic arm. Then the angle data can be used to calculate the position of the end effector using forward kinematics. While the position of the end effector will be compared to the desired input coordinates.

By comparing the position of the end effector with the input coordinates, we get the average value of the error on the x and y coordinates. The following is a graph of the position error value of the end effector when moving. The graph in Figure 11 above is a comparison of the end effector trajectory in Cartesian coordinates.

FREEZE DRYER MACHINE DESIGN FOR MANGO FRUIT STORAGE

Aa Setiawan 2) , Sandi Rifqi Ridwansyah 3)

Vacuum freeze-drying is used below the triple point of the air, below 6.1 bar or 610 Pa. Ilyas [6], in her research entitled "Changes in the characteristics of food ingredients in fruit chips using the freeze-drying method" that freeze-drying is one of the non-thermal processing techniques to extend the shelf life of the product. So based on the results of the research that powder or powder products are an effective way to produce good quality by freeze drying method compared to traditional methods.

The performance results of the freeze drying machine during the freezing process carried out for 10 hours obtained the freezing temperature of tomato and pepper products, respectively -2°C and vacuum pressure of -29 inHg. The stages in the freeze drying machine are first freezing the product, followed by drying the product. Data acquisition was performed for 8 hours, freeze dryer with a design cabin temperature of -20°C, while for the results obtained a cabin temperature of -13.1°C.

Figure 1. Freeze-drying process on the liquid phase diagram [12]

IMPLEMENTING KANSEI ENGINEERING AND QUALITY FUNCTION DEPLOYMENT METHOD IN DESIGNING

LEATHER

RESULTS AND DISCUSSION l. Kansei Words Mining

Quality Function Deployment (Creating the HoQ)
Quality Function Deployment (Concept Screening and Scoring)
Final Design and Validation Process

The results of the elicitation process for the Kansei words are shown in Table 1 below. Following on from the results gathered by the Kansei Engineering method, QFD will be used to find the designated design of the shoes. Based on the current product, authors generate two concepts that relate to the customer's needs, and it is shown in Figures 3 and 4 below.

The first concept is the closest design with the current product, this design is the improved design of the previous product that based on the needs of more customers, on the other hand, concept 2 is another improved design from the current product as well. It is possible that the customer saw that the current product of Original Leather does not appeal to their opinion and therefore it is an insight for the authors as it has become one of the generated concepts in this research. The second design, as it is also part of the customer's needs, would be better to help the SMEs grow better in the future.