To support the evaluation of the teaching and learning process in higher education institutions, it is necessary to build an opinion mining. This research will focus on how to conduct opinion mining on feedback on the learning process at private universities and develop appropriate optimization models to support the processing of the dataset. This research has five main steps, including literat…
In May 2023 PT Ulima Nitra's production target was 81,809.12 tons while the actual achievement was 66,475 tons. This was caused by several factors and it was indicated that one of the contributing factors was coal losses. This study aims to calculate the potential losses, and the causes and efforts to minimize coal losses.Calculation of potential losses is done by comparing the recovery hauling…