This study aims to determine the direct effect of perceived ease of use, perceived risk and E-WOM on trust and purchase intention, and also to determine the indirect effect of perceived ease of use, perceived risk and E-WOM on purchase intention which is mediated by trust. The population in this study were all shopee users in West Jakarta with a sample of 260 respondents. The method used in this research was quantitative analysis with SEM analysis assisted with SmartPLS 3.0 tool. The results of this study indicated that perceived ease of use had no significant effect on trust, perceived risk had no significant effect on trust, E-WOM had a positive and significant effect on trust, perceived ease of use had a positive and significant effect on purchase intention, perceived risk did not have significant effect on purchase intention, E-WOM had a positive and significant effect on purchase intention, trust had a positive and significant effect on purchase intention, thus trust could not mediate the effect of perceived ease of use on purchase intention, trust could not mediate the effect of perceived risk on purchase intention, and trust could mediate the effect of E-WOM on purchase intention.

The COVID-19 pandemic has made sectors experienced a decline in many businesses engaged in transportation services, especially aviation. Since lockdown was implemented, the Government has tightened entry rules in Indonesian territory by including a COVID-19 free certificate using the rapid test/PCR. The population in this study were all Citilink Airlines consumers in West Jakarta and 280 respondents as samples. This study was different from previous research by using different variables and models in this study. The method used in this study was quantitative analysis with SEM analysis tools and Smart PLS 3.3 tools. The results in this study indicated that price perception, service convenience, and service quality had a positive and significant effect on consumer satisfaction. Brand equity had no positive and significant effect on consumer satisfaction. Price perception on purchasing decisions had a negative and significant effect. Meanwhile, service convenience, service quality, and brand equity on purchasing decisions hada positive and significant effects.

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Takakura method to solve the problem of the accumulation of organic waste in the household environment, especially in the kitchen where the mother is cooking, provided that the hygiene is not smelly and not dirty, considering the kitchen where food is processed.. The purpose and objective of this activity is to provide training to housewives especially Citizens Association (Indonesian known as RW)001, 002, 003, 004, 006 and 008 in Joglo Village about making Takakura compost, so that the mother can solve the problem of household waste after cooking. Conclusion Community Service Program with the theme "Composting Waste of Household Kitchen Supporting Environmental Sanitation" is 1). Can increase the added value of mothers' skills in composting household kitchen waste with the Takakura Method, 2). Can improve the application of science and technology, by utilizing organic material microorganisms as decomposers, 3). Can improve the improvement of people's values, especially family health. The suggestion is to conduct further training on the use of organic waste from composting in preserving the environment and its marketing, 2). It is necessary to collaborate with private companies that have more organic waste such as restaurants, so that the processing of kitchen waste does not pollute the environment.