http://repository.president.ac.id/xmlui/handle/123456789/3199 2026-05-25T12:14:13Z http://repository.president.ac.id/xmlui/handle/123456789/13894 THE ROLE OF PURCHASE INTENTION ON INTERNATIONAL FOOD BRANDS DURING COVID-19 PANDEMIC Liewin, Sant Louis; Genoveva Since the earlier of 2020, Indonesia has been fighting against Covid-19 and currently there have been more than four thousand people infected by Covid-19 per day. This raises fears of all sectors especially in business. All regulations and policies such as social distancing, health protocols, work from home, travel restrictions, and self-isolation at home have been implemented by the government. As a result, all workforce must be reduced in all economic sectors, which causes an increase in the number of unemployed. If schools and offices are closed, some of the populations are influenced to change their life into a healthy lifestyle in order to prevent any disease that will come to them. This case will impact to their trust towards the food-seller and they will decide whether they purchase or not. Hence, this research explains about the influence of the lifestyle towards purchase decision through customer trust as the mediating variable. The variables of this research such as the dimensions of lifestyle (activity, interest, and opinion) as independent variables, purchase decision as dependent variable,and customer trust as the mediating variable. This research is a quantitative research which using SmartPLS 3.0 (Partial Least Square Structural Equation Model). The online questionnaire spread to 171 respondents by snowball sampling. The result show that the positive influence of lifestyle (activity, interest, and opinion) on purchase decision. In additional, the lifestyle positive influence on purchase decision trough trust as the intervening variable. 2020-01-01T00:00:00Z http://repository.president.ac.id/xmlui/handle/123456789/13893 THE CHANGE OF INDONESIANS LIFESTYLE TOWARDS FOOD PURCHASE DECISION DURING COVID-19 PANDEMIC Azmi, Amira Nurul; Genoveva The corona virus has attacked human life by taking away their freedom. Since the spread of the corona virus throughout the world at the end of 2019, every country has issued social distancing policies, including in Indonesia. The impact of this viral pandemic has damaged various existing businesses, including food franchises with international brands. The purpose of thisstudy isto analyze purchasing decisions at fast food franchises with international brands, assuming international brands already have cleanliness standards, high quality and a more comfortable environment (location), so that consumer confidence is more than other local brands. The trust factor is also used in this study as an intervening variable. This research is a quantitative study using an online questionnaire as a data collection tool. The valid questionnaires are filled in by 180 respondents. The sample used was non-purposived sampling with simple random sampling. Hypothesis testing uses the Structural Equation Model (SEM). The results showed that Food Safety, Food Quality and Environment had a significant effect on Purchasing Decisions during the COVID-19 pandemic. Meanwhile, Quality and Environment have a significant effect on trust, which is an intervening variable in this study. This study concludes that Food Safety, Food Quality, and Environment have a positive and significant effect on consumer confidence so that it affects purchasing decisions. 2020-01-01T00:00:00Z http://repository.president.ac.id/xmlui/handle/123456789/13884 DEVELOPMENT AND VALIDATION OF THERMOCOUPLE FOR THERMODYNAMICS EXPERIMENT Anggraini, Lydia; Hernawan, Rendi Undergraduate students often struggle with Thermodynamics due to a lack of hands-on experience with the devices and sensors discussed in coursework. Traditional experimental setups—such as engine test benches and HVAC systems—are prohibitively expensive and maintenance-intensive, limiting student access and requiring large group work that can reduce individual engagement. To address this issue, we developed and implemented a costeffective thermocouple calibration apparatus for use in undergraduate Thermodynamics laboratories. The equipment utilizes affordable, readily available components, enabling the creation of multiple identical setups within a constrained budget. This allows students to work in smaller groups, increasing interaction and individual learning opportunities. The apparatus supports instruction in key Thermodynamics concepts, including temperature measurement, sensible and latent heat, and the Seebeck effect. Results from implementation show improved student comprehension and engagement. This approach offers a scalable, practical solution for enhancing Thermodynamics education, with potential applications across engineering curricula seeking to improve experiential learning within limited resources. 2025-01-01T00:00:00Z http://repository.president.ac.id/xmlui/handle/123456789/13880 THE EFFECT OF POST WELD HEAT TREATMENT AND ITS EFFICIENCY ON THE AXLE HOUSING OF 440 STEEL AUTOMOTIVE PRESS HOT Anggraini, Lydia This study discusses the effect of Post Weld Heat Treatment (PWHT) and welding efficiency on the axle housing of Steel Automotive Press Hot (SAPH) 440, where the axle housing is a critical component in automotive vehicles. The research was conducted using the Double-Electrode Gas Metal Arc Welding (DE-GMAW) method for welding efficiency, with butt joints. Macroand micro-structure tests, as well as hardness tests using the Vickers Test, were also performed. These tests aim to provide insights into welding quality, defects, and the effect of PWHT on SAPH 440. From the results, the ideal welding parameters for Axle Housing welding are 300 A current, 29 V voltage, 140 cm/min welding speed, and 110 cm/min filler wire speed. Macrostructure testing shows that the obtained sizes exceed the standard, and using the DEGMAW allows axle housing welding to be performed faster than conventional methods. Microstructure testing shows a difference between non-PWHT with ferrite grains of ±5-10 μm and with-PWHT specimens with larger and coarser grains of approximately ±25 μm, due to grain growth. Micro Vickers testing shows that the non-PWHT has a higher hardness value in the heat-affected zone (HAZ) area, around 176.28 HV, while the with-PWHT specimens have a lower hardness value in the HAZ area, around 150.64 HV. However, the with-PWHT is much tougher, proving that grain growth and reduced internal stress have occurred. The selection of SAPH 440, solid wire as filler, and the use of MAG gas are a suitable combination for axle housing welding. 2026-01-01T00:00:00Z