Volume 2. Issue 2. October 2021 JIT Journal of Innovation and Technology e-ISSN: 2721-8562. p-ISSN: 2721-8570 JIT Editorial Boards Patron Prof. Suharno. Sc. Ph. IPU, - (SCOPUS ID: 56100133. Universitas Lampung Prof. Dr. Ari Sandyavitri, - (SCOPUS ID: 55980455. Universitas Riau Dr. Rustamaji, - (SINTA ID : 6036. Universitas Tanjungpura Editor-in-Chief Irza Sukmana. Ph. D - (SCOPUS ID: 35757952. Universitas Lampung Managing Editor Sapta Nugraha - (SCOPUS ID: 14069173. Universitas Maritim Raja Ali Haji Dewan Editor Prof. Dr. Eng. Ir. Gunawarman. , - (SCOPUS ID: 7409839. Universitas Andalas Dr. Denni Kurniawan, - (SCOPUS ID: 24724455. Universiti Teknologi Brunei. Gadong. Brunei Darussalam Prof. Dr. Edy Saputra. (SCOPUS ID: 36684331. Universitas Riau Alfirano. Ph. D - (SCOPUS ID: 36448171. Universitas Sultan Ageng Tirtayasa Dr. Gusta Gunawan. - (SCOPUS ID: 55836697. Universitas Bengkulu Prof. Dr. Ir. Hj. Sri Haryati. DEA. - (SCOPUS ID: 57196393. Universitas Sriwijaya Ir. Insannul Kamil. Eng. Ph. D - (SCOPUS ID: 56149407. Universitas Andalas Dr. Misfa Susanto, - (Scopus Author ID: 55820056. Universitas Lampung Dr. Helmizar, - (SINTA ID: 6645. Universitas Bengkulu Waleed Mugahed Al-Rahmi, - (SCOPUS ID: 56089640. Universiti Teknologi Malaysia. Skudai. Malaysia IT Support Afri Yudamson. Universitas Lampung Hery Dian Septama. Universitas Lampung Adi Prana Dipa. Universitas Maritim Raja Ali Haji Fauzi Ibrahim. Universitas Lampung JIT Editorial Office Fakultas Teknik Universitas Lampung. Jl. Prof. Dr. Sumantri Brojonegoro No. Gd. A Fakultas Teknik. Bandar Lampung, 35145. INDONESIA. Telp. /Facs: 62 721 704947. Direct call/WA: 62 811-7747-774 Website ://ojs. id/index. php/jit. Email: jit. bksptn@gmail. JIT Journal of Innovation and Technology e-ISSN: 2721-8562. p-ISSN: 2721-8570 PREFACE Journal of Innovation and Technology (JIT) Volume 2 Issue 2. October 2021 consist of 4 original articles and 2 review paper from various Engineering fields, they are including: Civil Engineering. Geophysical Engineering. Industrial Engineering. Information and Technology, and Aviation engineering research. JIT published by Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik. BKSPTN Wilayah Bara. Indonesia. Highlighting on the current growth in the field of engineering and innovation technology field. JIT committed to contribute for our academic and research competitiveness and sustainable We would like to invite lecturer, post graduate students, scientist, researchers and industrial pactions to submit their recent funding and results in the field of engineering, technology application and research We thanks to all authors, reviewers, and BKS PTN Barat team for the contribution and supports. We are looking forward to receive more articles in the next following issues. Best regards. JIT Editorial Team JIT Journal of Innovation and Technology e-ISSN: 2721-8562. p-ISSN: 2721-8570 Table of Content JIT Editorial Boards Preface T ab le of Co nten t Article 1 Correlation of Permeability Coefficient and Coefficient of Consolidation in CityAos Soft Soft Soil Soil Pontianak CityAos Ludgerus. Ahmad Faisal. R M Rustamaji Article 2 Proposed Improvement on Supply Chain System to Minimize the Bullwhip Effect Phenomenon with Monte Carlo Simulation Approach Dyah Lintang Trenggonowati. Maria Ulfah. Asep Ridwan. Rasie Arthafia Article 3 Design of Photovoltaic as Energy Source at Government Office in Pangkalpinang Ahmad Ferdiansyah. Ghiri Basuki Putra. Wahri Sunanda Article 4 Estimation of Potential Gold Mineral (A. with A Resistivity Approach Akroma Hidayatika. Arif P Prabowo. S Rasimeng. Medi K Putri. Suharno Article 5 Development of Roadmap for the Aircraft Maintenance Industry. Maintenance Repair and Overhaul in Indonesia Freddy Franciscus Article 6 Digital Twin Technology in Internet of Things (IOT) Anitha Vemulapalli. Geeta Mahadeo Ambildhuke. N Anuradha