JESTECH, Journal Of Engineering Science And Technology is a peer-reviewed journal that aims at the publication and dissemination of original research articles on the latest developments in all fields of engineering science and technology. The journal publishes original papers in English, which contribute to the understanding of engineering science and improvement of the engineering technology and education. Papers may be theoretical (including computational), experimental or both. The contribution should be unpublished before and not under consideration for publication elsewhere. published by Universitas Nasional Jakarta.