Judul: Analisis dan Implementasi Two Factor Authentication dengan QR Code pada Aplikasi Berbasis Web
Abstrak: The process of authentication on the web application in the Internet is very important and call for a method that can securely authenticate. Two Factor Authentication is a method of combining two or more methods of authentication to improve security. In this research, analysis and implementation of two-factor authentication with QR code on a web-based online application is implemented. The system will use an authentication token application that run on mobile phones. Token application will work as a scanner that reads the information from the QR code on the web application. The use of QR code in the system is expected to enhance the security and simplicity of the authentication process
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Judul: Pembangunan prototipe sistem transaksi online dengan otentikasi token berbasis Android menggunakan algoritme enkripsi one time pad
Abstrak: Transaksi online adalah suatu penerapan teknologi dalam perdagangan. Dalam penerapannya, transaksi online memudahkan pelanggan dalam melakukan transaksi. Namun, dengan adanya transaksi online muncul juga isu keamanan yang mengancam aktifitas transaksi online. Beberapa serangan seperti spoofing, pishing, dan key-logger dapat mengancam keamanan penggunaan transaksi online. Token transaksi online dibangun untuk meningkatkan keamanan transaksi. Token dibangun menggunakan algoritme enkripsi one time pad (OTP). Algoritme OTP merupakan salah satu algoritme kriptografi yang setiap kuncinya dibangkitkan selalu berubah setiap satuan waktu. Pada penelitian ini, digunakan waktu selama satu jam. Berdasarkan hasil implementasi pada penelitian ini, otentikasi token dapat menangani serangan-serangan tersebut. Hasil pembangkitan kunci token setiap user berbeda-beda. Token akan kadaluarsa setalah 120 detik, dan kemudian pengguna log out secara otomatis.
Keyword: Authentication, One time pad, Security, Token, Ancaman, Threats, Kebijakan, Policy, Spesifikasi, Perancangan, Design, Topologi jaringan

Judul: Mercury Toxicity and It’s Effect on Histopathology Change of Nile Tilapia (Oreochromis niloticus).
Abstrak: Nile tilapia (Oreochromis niloticus) is one of fish species that oportunity to contaminated with mercury. The effects of pollutants can damage living organisms organs and can cause death. The effects caused mercury had acute or chronic character. The aims of this study are to determine threshold and acute toxicity of mercury chloride (HgCl2) of Nile tilapia (Oreochromis niloticus), to assess the effect of mercury chloride (HgCl2) on several biometric parameters (survival, growth rate of average daily weighted, liver condition, bile and reproductive variability of Nile tilapia (Oreochromis niloticus), assess the level of damage to the histological structure of the gills, liver and kidney of Nile tilapia (Oreochromis niloticus) caused mercury chloride (HgCl2) exposure. This study was conducted from February to June 2013. Nile Tilapia (Oreochromis niloticus) were used in this study were female with average weight 20 grams or 11-13 cm length range. Toxicant materials used in this study was mercury chloride (HgCl2). Fish were reared in each aquarium 60x40x30 containing 48 liters of water. This study consists of three stages: a preliminary test, acute test, and sub-chronic test. To determine the changes in biometric condition of tilapia approximated by measuring the survival rate (SR), the growth rate of average daily weight , the content of mercury in the fish organs, hepatosomatic index (HSI), the relative bile volume (VER), gonadal soamtic index (IKG), fecundity and oocit diameter, tissue damage caused by mercury in fish organs by making histological preparations stained with hematoxylin and eosin. The median lethal concentration (96 hr, LC50) of Mercury Chloride was calculated as 1,64 mgL--1.The survival rate was highest in the control treatment (46,67 %) . Mercury chloride with concentration 0.196 mgL--1 show significant effect to changes HSI and relative bile volume, and oocyte diameter of Nile tilapia (p < 0,05). Mercury chloride with a concentration of 0,164 mgL-1 and 0,196 mgL-1 have not a significant effect on the growth rate of weight, gonadal somatic index and fecundity of Nile tilapia (p > 0,05). Mercury chloride cause damage to gills (hyperplasia, hypertrophy, proliferation and neukrosis), liver (hyperplasia, hemorhage, shrinkage of hepatocytes, proliferation and neukrosis) and kidney (hyperplasia, hemorrhage, shrinkage of the glomerulus, proliferation and neukrosis).
Keyword: Nile tilapia, Hepatosomatic indexs (HSI), histopathology