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Pemanfaatan sistem informasi sebagai penopang organisasi tidak dapat dipungkiri lagi, dimana setiap bagian dari organisasi diharapkan mampu memberikan pelayanan yang cepat dan akurat kepada setiap end user. Salah satu bentuk layanan sistem informasi tersebut adalah Expertise Management System (EMS). EMS dikembangkan di Universitas Negeri Semarang (UNNES) memiliki kemampuan untuk menyajikan data tentang pakar-pakar yang telah dimiliki UNNES kepada end user. Desain EMS melalui tahap prototype (analisis, perancangan, desain sistem, DFD, ERD, dan desain skema database), pemrograman, pengujian dan pemeliharaan. Melalui EMS ini pula, UNNES dapat menawarkan pakar-pakarnya untuk berkolaborasi dalam penelitian maupun kegiatan lainnya, sehingga dengan sendirinya akan memperkuat posisi UNNES di dalam persaingan tingkat regional maupun global.

No abstract

Nowadays, everything is within our grasp and with the mobile phones become easier. Its use is not limited to calls and SMS but has become a tool that can be used to serve business transactions, banking, academic of data through mobile applications. Tus, the security of authentication in the mobile application needs to be improved to avoid a hacker attack. This article presents an authentication in the mobile application to the server using a hybrid of cryptographic algorithm Advanced Encryption Standard (AES) and Blowfish. AES and Blowfish is a symmetric key algorithm is very fast and powerful. With the utilization of a large block size of AES and Blowfish to encrypt keys, AES security will be much more robust and complicated to attacked. So, it will be difficult for hackers to perform Man in the Middle (MitM) attacks.

The use of mobile technology changes our daily lives without exception in the learning process. The use of mobile in the learning process aims to change learning and teaching methods to be innovative through visualization techniques, thereby transforming students from passive learners to active students. One of the mobile learning methods that allow us to show a given subject’s visualization is Augmented Reality (AR). The use of AR as a supporting medium in studying biology subjects. AR development uses the Luther-Sutopo Multimedia System methodology. The results of this study are mobile-based learning media to visualize biology subjects using AR.