2editor's note-jan.-june2018.pmd 1 FROM THE EDITOR ISSN 0115-7809 Print/ISSN 2012-0818 Online Irene M. V illaseƱor, Ph.D. Editor-in-Chief Welcome to the f irst issue of Science Diliman for 2018. Let me share the good news that Science Diliman is now included in the ASEAN Citation Index database. Science Diliman is also indexed in the Emerging Sources Citation Index and is a recipient of the Journal Incentive Program (JIP) by the Commission on Higher Education. This issue includes four main articles and a short communication. The f irst article by authors Bernardo and de Leon considers a cellular system design deployment called HetNets (heterogeneous network) as viable solutions to meet the demands of 5G, the next generation of cellular system. HetNets are networks connecting computers and other devices with different operating systems and/or protocols. In the second article, authors Masangcay et al. studied the feeding biology of Spinetail Devil Ray (Mobula japanica) belonging to the genus Mobula. Species of this genus are commonly called devil rays or flying rays. They feed mainly on tropical krills, locally known as alamang. In the short communication by the same authors, the focus of the study is on the krills and their spawning habits. The article by Narsico et al. determined that the brown macroalgae Sargassum spp. is the most widely distributed source of fucoidan and has higher content of partially purif ied fucoidan. Fucoidan is commercially available, and is known for its nutritional and health benef its. The last article by authors Daquioag et al. investigated the presence of S. aureus and methicillin-resistant S. aureus (MRSA) in computer service providers, computer peripheral, and handrails of Public Utility Jeepneys (PUJs). Interestingly, handrails of PUJs have the least carriage of S. aureus, while MRSA carriage is relatively low. Staph infections are treated by antibiotics and treatment becomes more complicated in MRSA infections. Thank you to our authors and reviewers for their contributions to the increasing quality of articles in Science Diliman!