As a lecturer who has a Tri Dharma obligation, he is required to do community service, this is done by ADMI as an organization that does service to Gunadarma University lecturers. The purpose of this service is to introduce and use the features contained in the EVIEWS software as tools for analysis. Characteristics and level of knowledge of participants, in this case ADMI members in the EVIEWS in-depth training, methods and media and training materials available and used at ADMI, as well as teaching materials and media needed by ADMI members. This discussion was also carried out as a medium to equalize perceptions in determining methods as a reinforcement of the communicative Eviews in-depth training base and adding simulations regarding statistical analysis. The result we hope is to be able to help fellow human beings and be able to ease the burden of life for the community in terms of statistical needs that are used for work and daily life

The most widely used refrigeration machine today is a refrigeration machine that operates with a vapor compression cycle (SKU). To operate a vapor compression machine, refrigerant is needed as a working fluid. The most widely used refrigerants are chlorofluorocarbon (CFC) and hydrochlorofluorocarbon (HCFC) refrigerants. However, their use can damage the ozone layer and has a great potential to increase the effects of global warming. Therefore, a refrigeration system that is environmentally friendly and also has low power is needed, this can be fulfilled by using thermoelectric. This research was conducted to analyze the performance of temperature differences, heat absorbed, cooling capacity and COP in thermoelectric-based cooler boxes, thermoelectric performance with variations in input voltage and with variations in the addition of heatsinks where the method used is experimental by controlling the variable input voltage. From the research results, the calorific value absorbed is proportional to the increase in the applied voltage. Where the greater the voltage applied, the heat absorbed will be higher and the input power that enters the thermoelectric module is directly proportional to the incoming voltage where the greater the voltage. Then the power that goes into the thermoelectric will also be even greater. Whereas the COP value will decrease as the voltage increases and the best thermoelectric performance is with a voltage of 10 V. This can be seen after 60 minutes, the temperature difference value is 6.6 0K, the absorbed calorific value is 19,150 W, and the COP is 0.921. The thermoelectric performance is not only based on the COP value but also based on a review of the electric power consumed and the cooling speed during the 60 minute test. Then for the addition of a copper heatsink the COP value is 0.4832 and the temperature drop in the cooler box is only 3.9 0K, the value is lower than without the additional heatsink due to the gap between the aluminum heatsinks.

Fixtrut merupakan sebuah pipa schedule dengan material mild steel yang diberi pengerjaan cutting, punching, stamping, serta pelapisan logam dengan metode hot dip galvanized. Fixtrut berfungsi untuk menstabilkan antena komunikasi yang telah terpasang pada tower telekomunikasi. Pada penulisan ilmiah ini membahas proses produksi fixtrut dan pelapisan logam hot dip galvanized di PT. RJU. Pada proses produksi fixtrut ini menggunakan metode jenis pabrikasi logam, artinya proses yang dilakukan dengan merubah bentuk di benda kerja. Perubahan bentuk ini dapat dilakukan dengan cara memberikan gaya luar sehingga terjadi deformasi plastis. Metode proses produksi fixtrut di PT.RJU melalui 6 tahapan, yaitu pemilihan material, cutting dengan mesin gerinda, stamping, punching, pembuatan ventilasi, serta pelapisan hot dip galvanized. Pada proses hot dip galvanized ada 5 tahapan yang harus  dilalui,  yaitu  pickling  merupakan  pencelupan  dengan  asam  klorida,  lalu  rinsing  merupakan pembilasan dengan air bersih, fluxing merupakan pencelupan dengan larutan flux, molten zinc bath merupakan proses galvanisasi dengan temperatur 440 ºC – 460 ºC, dan terakhir quenching merupakan proses pendinginan dengan larutan chromat.

Meat is one of the agricultural commodities needed to meet protein needs, because meat contains high quality protein, which is able to contribute complete essential amino acids. The purpose of this paper is to design, analyze the static strength of the frame based on theoretical calculations and simulations on solidwork 2018 software. This machine consists of a frame, reservoir, grinding shaft, transmission, and electric motor. The results of the design obtained a Meat Grinding Machine with Length: 610 mm, Width: 500 mm and Height: 750 mm. The material used is 2024-O Alloy with a modulus of elasticity of 72,400 N/mm2. The load force obtained is 576.32 N. And the value from the analysis is the displacement value of 0.174 mm and for theoretical calculations, the displacement value is 0.176 mm. So, the value of the percentage error is 1.176%. For the von Mises value of 68,970 MPa, and for calculations based on the theory, the von Mises value is 52,499 MPa. So, the value of the error percentage is 0.238%. And for the value of the safety factor obtained a value of 1,087, and for calculations based on the theory, the value of the safety factor is 1.428. So, the value of the error percentage is 0.313%.

Hybrid Electric Vehicles (HEV) combines the benefits of gasoline engines and electric motors which can be configured for improving fuel efficiency. Lithium Iron Phosphate (LiFePO4) Phosphate based technology possesses superior thermal and chemical stability which provides better safety characteristics than those of Lithium-ion technology made with other cathode materials. This research conducted by two methods , methods of part 1 is a comparison of the results with the thermal management simulation and experiment, part 2 is a method of optimizing the thermal management for battery pack by using solidwork software. When the fan is on, the forced air flow over the cells removes some of the generated heat. Results of method part 1 is simulation more heat than experiment in the amount of  0.11% – 1.56%. The results of the method part 2 is simulated using the fan 4 fan with a speed of 415 rad/s and battery gap 30mm most efficient compared with 4 fans the other , while the simulation using 6 fan, fan speed 415 rad/s and battery gap 30mm most efficient for all.