Judul: Pengamatan terhadap aktivitas pengguna jejaring media sosial Facebook dengan Statistika deskriptif
Abstrak: Social network Facebook is the social network that exist long enough. Currently, Facebook is the social network with the most users in the world. More than 80% of internet users in the world have a Facebook account. In Indonesia, Facebook is the social network with the most users too. Percentage of internet users in Indonesia that have a Facebook account is over 90%, and more than half are active users. Result of observation over some Facebook account show that 45% users became passive in the last two years (2013-2014). Down rate in 2014 is higher than 2013. The emergences of various new social network with different services is suspected causes many Facebook users became passive and start using other social network.
Keyword: Bogor Agricultural University (IPB), descriptive statistics, Facebook, social media

Judul: Deskripsi Penggunaan Internet Di Kalangan  Mahasiswa Institut Pertanian Bogor
Abstrak: Today, internet has become important needs to all people, especially student. The aim of this research is to identify factors affecting student become an active or lapsed users of internet using binary logistic regression. This research also investigate factors affecting internet usage intensity of active users (devided into high, moderate, and low users) using ordinal logistic regression. By knowing these factors, the internet provider could determine the type of consumer they are going to reach. The object of this research is undergraduate students of Bogor Agriculture University that came in between year 2001-2004. Stratified sampling methods were used in this research using faculty as strata. Number of sample that was collected is 250 samples. Data shows that 81.6% are active users among them, 6.9%, 49.8%, and 43.3 % are high, moderate, and low users, respectively. The research show that the main factors affecting student become an active users of internet are (1) the use of internet for educational reason; (2) the use internet for personal communication, games, and access public information purposes; and (3) campus and internet cafe as location when using internet. While the main factor affecting students become an lapsed users is the use of internet to look for holiday information. The main factors affecting internet usage intensity of active users are the use of internet using personal email, business email, world wide web, download software/film/music, and mailing list application.
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Judul: Transplantasi sel testikular ikan gurame pada ikan nila
Abstrak: One of the constraints in the cultivation of giant gouramy is the lack of fry availability, necessitating the development of fry production engineering technology to address these issues. Engineering technology of fry production through the surrogate broodstock generated by testicular cells transplantation technique has been developed in salmonid. Testicular cells transplantation technology requires a suitable recipient that can accept and support the development of spermatogonia donor cell. This study examined the potential of Nile tilapia as a recipient for donor giant gouramy cells by observing its colonization in the gonads of Nile tilapia. Fish donor of 598,82 grams body weight with Gonado Somatic Index (GSI) of 0,013% and spermatogonial cells percentage of 28,22% was used. Testicular cells in amount of 20.000 cells/0,5 μl PBS were injected into peritoneal cavity of 4-day-old tilapia larvae. The success of transplantation and donor cell colonization were analyzed using PCR method with DNA template that have been extracted from tilapia larvae of 1 day post injection and the gonad of 2 months old fish. PCR was performed using a set of specific primer for the giant gouramy growth hormone gene and tilapia β-actin as an internal control of DNA loading. PCR results showed that the transplanted tilapia has a DNA band in the same size with giant gouramy, and not in untransplanted control. The success rate of transplantation in larvae was 100% (5/5) and the percentage of individual recipients containing donor cells in their gonad was 60% (3/5). This indicates that donor cells from giant gouramy was successfully injected and can be colonized in the gonads of Nile tilapia, so the Nile tilapia potentially be used as recipient for giant gouramy testicular cells transplantation. Further analysis needs to be conducted to observe the ability of spermatogonial cells develop into sperm and eggs in the gonad of tilapia recipient.
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