Judul: Web Log Mining Menggunakan k-Means pada Server Proxyuntuk Perancangan Manajemen Bandwidth IPB
Abstrak: IPB internet services isimproving every year, both from the infrastructure and service aspects. One of the infrastructure improvements is internet bandwidth enhancement. However, research on user characterization of internet usage in IPB has never been done. This study uses k-Means algorithm to cluster IPB proxy server log's file to obtain the characteristics of internet users. The research evaluates all user's log files including student, educational staff, and lecturer. This study resulted in 16clusters calculated based on the number of hits on the 14 site categories. Clustering resultsshowedthatthere weresimilaritiesin theuse of the internetfrom student dorm.In each cluster, thetotalaverage percentage of the sites with Service and Entertainmentcategoriesareabove 24% and 33%.Bandwidth management is designed based on member and utilization of each cluster.
Keyword: usage characterization, proxyserver, proxy log, k-Means, IPB’s internet, clustering

Judul: Perencanaan Kapasitas Untuk Kinerja Web Dan Proxy Server IPB Menggunakan Model Open Queueing Network M/M/2 dan M/M/1
Abstrak: Penelitian ini bertujuan untuk melakukan perencanaan kapasitas terhadap web server dan proxy server yang dimiliki oleh IPB. Dari beberapa web server dan proxy server yang dimiliki oleh IPB, penelitian ini difokuskan pada web server (www.ipb.ac.id) dan proxy server (proxy1.ipb.ac.id atau 172.17.0.11) utama IPB. Kondisi jaringan IPB saat ini menggunakan model jaringan antrian yang bersifat terbuka (open queuing network model) dan heterogen dengan model M/M/2 dan M/M/1 masing-masing untuk web server dan proxy server IPB. Pada penelitian ini dilakukan pengukuran kuantitatif pada web server IPB yang meliputi utilisasi CPU server secara keseluruhan, utilisasi CPU untuk request web, dan rata-rata penggunaan memori. Sedangkan proxy server IPB dilakukan pengukuran kinerja meliputi utilisasi CPU secara keseluruhan, utilisasi CPU untuk Squid, utilisasi CPU untuk request, hit request pengguna ke proxy server.
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Judul: Pengujian Virus Newcastle Disease Gen VII Isolat Lapang Sebagai Virus Standar Pada Uji Tantang Vaksin
Abstrak: This study was conducted to determine the standard of Newcastle disease virus Gene VII field isolate as a virus challenge to vaccine test. A virus suspension that has previously been tested by HA test then titrated with EID50 using 30 Specific Pathogen Free (SPF) of 10 day old chicken embryonated eggs. In addition, chicken lethal dose50 (CLD50) test were used to determine the virus titer that could cause 50% death of the chicken population. The CLD50 test was used 25 day-old-chickens (DOC) divided into 5 groups. The virus was diluted from 10-1 to 10-8. The 104 to 10-8 dilution of NDV was infected to every group of chicken via eyedrop and intranasal with 0.1 ml/chicken dosage. Haemagglutination test showed that the allantoic fluid were contain high titers of NDV is 512 HAU. The infective NDV that had been titrated by EID50 test showed the virus titers is 109 EID50/0.1 ml or 1010 EID50/ml and the virus titers of CLD50 test e.i 106.48 CLD50/0.1 ml or 107.48 CLD50/ml. These results can be concluded that the NDV Gene VII field isolates were most appropriate to be used as a standard virus to vaccine test
Keyword: Newcastle Disease Virus Gene VII, HA tes, EID50 test, CLD50 test