ABSTRACT
The development of medical facilities is crucial in Indonesia's remote island since COVID-19-19 disease collapses the hospital system. This work is intended to develop the COVID-19 vessel as a medical support system with a dynamic positioning system to give medical health care for Indonesia's remote island. The COVID-19 vessel is named KM. LOTUS is arranged similarly with Type B medical facility standards. Conceptual design and performance calculation comprised weight calculation, medical facility arrangement, resistance and powering test, seakeeping performances are evaluated. The ship is equipped with an ambulance boat to increase mobility capabilities for smaller waters, such as narrow straits and estuaries. It is placed behind the ship, uses an autonomous system to climb up to the top of the deck. The resistance test has a value of 66.6 kN and a power of 383 HP at a ship speed of 12.22 knots. The seakeeping analysis was carried out using the strip theory method by simulating a ship speed of 12.22 knots representing Maluku sea condition. It can be found that different incoming waves will produce different oscillatory movements of heave, pitch, and roll. © 2023 American Institute of Physics Inc.. All rights reserved.
ABSTRACT
COVID-19 is an infectious disease that has spread to countries in the world, including Indonesia. A stochastic SIR model was constructed to represent the spreading of COVID-19. One of the popular methods in a heuristic search and optimization algorithm, a genetic algorithm method, is implemented to estimate the parameters of the SIR stochastic model. As a result, using the parameters obtained, the stochastic SIR model can be in line with the actual data, and we get accurate predictions within four weeks later. © 2022 Author(s).
ABSTRACT
This study aims to reveal the transformation of offline learning to online learning due to Covid-19 in student perceptions. The massive impact on the education sector requires the provision of education to adapt to situations and conditions. This research was conducted at one of the state universities in Indonesia, with the selection of informants based on the representation of each department at the university. The method in this research uses a narrative approach. The data were collected through interviews that were set up online. The research data was processed based on the results of studies and focus group discussions (FGD) related to the implementation of online learning during the Covid-19 Pandemic. The results showed that the implementation of learning was welcomed by the students, in their perception that online learning was considered to be more flexible, efficient and effective in the use of time as well as in terms of costs and energy. It cannot be denied that the implementation of online learning still encounters various obstacles and challenges, including: interaction is not optimal, schedule and lecture estimates change, inadequate facilities, and the use of learning media is not optimal. © 2021. All Rights Reserved.