Indonesian Institute of Sciences

About: Indonesian Institute of Sciences is a facility organization based out in Jakarta, Indonesia. It is known for research contribution in the topics: Population & Biology. The organization has 4795 authors who have published 10544 publications receiving 76990 citations. The organization is also known as: Indonesian Institute of Sciences Cibinong, Indonesia.

Keylogger Application to Monitoring Users Activity with Exact String Matching Algorithm

Abstract: The development of technology is very fast, especially in the field of Internet technology that at any time experiencing significant changes, The development also supported by the ability of human resources, Keylogger is a tool that most developed because this application is very rarely recognized a malicious program by antivirus, keylogger will record all activities related to keystrokes, the recording process is accomplished by using string matching method. The application of string matching method in the process of recording the keyboard is to help the admin in knowing what the user accessed on the computer.

Magnetic and microwave absorbing properties of BaFe12−2xCoxZnxO19 (x = 0.0; 0.2; 0.4; 0.6) nanocrystalline

Abstract: We have investigated the magnetic and microwave absorbing properties of barium hexaferrite BaFe12−2xCoxZnxO19 (x = 0.0; 0.2; 0.4; 0.6) nanocrystalline prepared using solid state reaction method. The powder of these ferrites were resulted by high energy ball mill for 1 h and mixed with epoxy resin to be converted into a microwave absorbing composite. The results show barium hexaferrite structures for Ba(Fe,Co,Zn)12O19 have been formed. The coercive force (Hc) decreases rapidly with the substitution of Co and Zn in the structure of Ba(Fe,Co,Zn)12O19. It's indicate that the Co-Zn in the structure of Ba(Fe,Co,Zn)12O19 contributes to magnetic and microwave absorption properties. The minimum reflection loss value of −29.98 dB was observed at 10.8 GHz with a matching thickness of 1 mm for BaFe12−2xCoxZnxO19 (x = 0.6) nanocrystalline. As results, the magnetic absorbing properties improve significantly by Co-Zn incorporation.