Judul: Klasifikasi Trafik Internet IPB Berdasarkan Port Number
Abstrak: Institut Pertanian Bogor terus melakukan peningkatan dalam pelayanan jaringan internet, salah satunya meningkatkan kapasitas bandwidth. Tujuannya adalah membantu civitas IPB dalam melakukan kegiatan belajar dan akademis. Atas dasar masalah tersebut, maka perlu dikaji ulang untuk mengetahui pemanfaatan jaringan internet IPB dan mengetahui katakteristik pengguna layanan internet. Penentuan pengambilan data penelitian dilakukan dengan metode yang berdasarkan pada ketentuan ITU-TE.500. Pengambilan data penelitian dilakukan dengan metode sniffing pada Cisco SPAN. Data yang dianalisis merupakan raw data yang melewati router terluar dengan menggunakan metode klasifikasi port number. Hasil penelitian ini, adalah beban puncak pada jaringan internet IPB terjadi pada pukul 14.00 sampai 15.00. Berdasarkan hasil analisa, penggunaan layanan internet yang paling banyak diakses merupakan kategori web sebanyak 82% dengan total data sebesar 700 GB sedangkan yang paling sedikit diakses merupakan kategori bulk sebanyak 0.001% dengan total data sebesar 2.5 MB. Dari kategori web sebesar 82% masih ada kemungkinan civitas IPB menggunakan layanan jaringan internet untuk keperluan akademik dan riset.
Keyword: Cisco SPAN, ITU-T E.500, jam sibuk, klasifikasi, port number

Judul: Analisis Penggunaan Layanan Jaringan Internet IPB
Abstrak: Bogor Agriculture University (IPB) has implemented internet network technology to support education. This study aims to determine patterns of IPB internet network service usage based on application protocols that are accessible through the network and the composition of websites that are frequently visited by IPB academic community. The data used in this study is IPB internet traffic, which were obtained through measurements using Wireshark. The first results show that the observed application protocol traffic has a proportion as follows: HTTP is 87.41%, SSL protocol is 11.27%, FTP protocol is 0.09%, FTP-data protocol is 0.66%, and SMTP merged with POP is 0,57%. HTTP is the most popular protocol used in IPB network. The other results of this study also show the composition of websites visited by IPB academic community. The portion for commercial website is 88.35%, where as the portion for the website that supports educational process is 8.15%. We also obtained information that IPB internet users access to pornography sites at 1.4%. Therefore efforts need to be made to increase the use of IPB internet network services for education.
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Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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