Academicsera – 439th International Conference on Science, Technology, Engineering and Management(ICSTEM) will be held on 20th- 21st April, 2019 at Kota Kinabalu , Malaysia. ICSTEM is to bring together innovative academics and industrial experts in the field of Science Technology and Management to a common forum. All the registered papers will be published by the World Research Library and will be submitted for review for indexing by Google Scholar etc.