The pandemic corona virus 2019 (COVID-19) has become an international concern and poses challenges to psychological resilience in all fields, one of which is education. Therefore an effective learning strategy is needed to deal with this pandemic. The purpose of this study was to survey students spread across various universities in Indonesia and Malaysia regarding e-learning systems conducted during the COVID-19 outbreak in Indonesia and Malaysia in 2020, e-learning systems starting from student knowledge about e-learning, planning elearning, implementing e-learning until evaluating e-learning activities. Data will be used for future reference. This research is a descriptive study with cross sectional approach. The Likert scale survey method is used with a total of 136 student respondents from tertiary institutions in Indonesia and Malaysia. The results of the analysis show that students know e-learning as a distance learning system in dealing with the current pandemic corona virus, 51% expressed agreement related to e-learning preparation, 38% stated neutral in e-learning planning and 68% stated neutral in evaluating the implementation of e-learning. Student assessment and good perception about e-learning play a big role in the implementation of learning with e-learning. E-learning has a positive impact and has become an alternative learning process for lecturers and students. Good preparation is needed in implementing e-learning so that e-learning activities can be carried out effectively. Interaction can be developed and limited conditions through face-to-face meetings can be answered through e-learning activities.

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This study aims to analyze the impact of the COVID-19 pandemic on changes in handsanitizer prices in Indonesia. This study is motivated by the increasing demand for handsanitizers which has had an impact on price ratings. The method used is an explanatory survey with an exponential form approach for the demand function and Linear Cobweb Form for the supply function. The structure of the hand sanitizer market is assumed to be a perfectly competitive market. The results of the study indicate that despite changes in prices, the numerical analysis shows that prices are stable. The entry and exit of companies in the market does not affect price stability. This finding implies that after the pandemic the prices of handsanitizers will return to normal, so producers and consumers must remain rational.

LaNi5 is widely used in various applications. Many methods to produce LaNi5 particles have been reported but information for the large-scale production, so far, is less available. This study aimed to evaluate the project for the production of LaNi5 particles using combustion-reduction (CR) and co-precipitation-reduction (CPR) methods based on engineering and economic perspective. Engineering evaluation was conducted by evaluating the CR and CPR processes from stoichiometry. For the economic evaluation, several economic parameters were calculated in the ideal condition including gross profit margin (GPM), payback period (PBP), break-even point (BEP), cumulative net present value (CNPV), profitability index (PI), internal rate return (IRR), and return on investment (ROI). For the worst cases in the project, it was done by calculating both the internal problems (i.e., raw materials, sales, utility, labor, employee, fixed cost, variable cost, and production capacity) and the external issues (i.e., taxes and subsidiaries). The engineering analysis provided the information that CR and CPR projects are prospective for being able to be done using commercial apparatuses. The economic analysis from GPM, PBP, BEP, CNPV, and PI showed the positive results, while IRR and ROI showed the negative ones, indicating that the projects are acceptable for large-scale production, but it seems to be less attractive for industrial investors. The analysis also confirmed that the CR process was more prospective than the CPR process. This work has demonstrated the important of the projects for further developments.

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