Judul: Optimasi pemasangan iklan di televisi dengan metode Integer Programing
Abstrak: Iklan merupakan dalah satu strategi pemasaran produk, mengingat pemasangan iklan di televisi memerluakn biaya yang cukup besar. Oleh karena itu diperlukan suatu metode untuk mendapatkan kombinasi spot iklan yang optimal dengan menggunakan biaya yang efisien dan efektif untuk dapat menjangkau target penonton yang diharapkan. Salah satu kriteria iklan dikatakan efektif jika memiliki jumlah nilai rating yang tinggi selama periode beriklan atau lebih dikenal dengan nilai Gross Ratingn (GRP) dan Reach N+ yang besar.
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Judul: Pendugaan kestabilan rating program televisi dengan rantai markov waktu kontinu tidak homogen
Abstrak: Televisi merupakan media yang paling banyak digunakan untuk memasang iklan. Hal ini disebabkan televisi sebagai salah satu sarana hiburan yang dapat dijangkau berbagai lapisan masyarakat. Jika ingin memasang iklan di televisi pemasang iklan akan mengeluarkan biaya yang sangat mahal. Oleh karena itu pemasang iklan memerlukan strategi agar target penonton yang diinginkan tercapai. Salah satu strategi yang perlu diperhatikan adalah pemilihan program yang akan dijadikan tempat penayangan iklan. Program televisi yang dipilih adalah program yang ratingnya stabil. Pada penelitian ini, peneliti menerapkan rantai Markov waktu kontinu tidak homogen untuk menduga kestabilan rating program televisi, dengan rantai Markov waktu kontinu tidak homogen akan diduga probabilitas transisi dari satu state ke state lainnya, sehingga akan terbentuk satu matriks probabilitas transisi. Sebanyak 52% program yang diamati diduga akan stabil selama dua bulan setelah pengamatan. Pendugaan dengan rantai Markov waktu kontinu tidak homogen dapat dikatakan baik karena ketepatan pendugaannya mencapai 67%.
Keyword: Rating, Matriks, Probabitas transisi, Rantai Markov waktu kontinu tidak homogen, Bogor Agricultural University, Institut Pertanian Bogor, IPB

Judul: Phylogeography and Species Limits in the Papuan White Snake (Micropechis ikaheka) (Reptilia: Serpentes: Elapidae)
Abstrak: Papua white snake, Micropechis ikaheka, has been distingushed into two subspecies M.i. ikaheka and M.i. fasciatus. However, due to lack of data on their morphology, distribution and ecology, both subspecies often ignored in scintific discussions and refers only byas , Micropechis ikaheka. This study was designed to document the differences between M.i. ikaheka and M.i fasciatus by using scales characteristics and reproductive organ or hemipenes. The study also examine, zoogeography, habitat, diet and cannibalism of both subspecies to better understanding the the ecology of one of the most venomous snakes in the world. This study consists of three topics with method and also different in the size samples, respectively. The first study is the histology and microtopography of the skin were studied using paraffin method and Scanning Electron Microscope (SEM). The second is the hemipenis were examined by following Myers and Cadle (2003), and Zaher and Prudente (2003). The third is the abdominal surgery was carried out to document diet type and the investigate phenomenon of cannibalism in the snake. Specimens for this study came from the collection from Museum Zoologicum Bogoriense (MZB) and Universitas Negeri Papua’s Laboratory (LZU). The research result also indicated that the markers of skin and hemipenis described the same structure and microornamentation in all M. ikaheka groups being compared. Based specimens examined morphological descriptions do not s support the further differentiation in Micropechis. In short, two markers that used in this study could not sufficiently indicate the differences in the level of species and subspecies of M. ikaheka. The study, however, were able to delineate zoogeography and skin color patterns, which fall into four groups: M. i. ikaheka; M. i. fasciatus. M. i. ssp. “intermediate”; and M. i. ssp “black”. This study also revealed that color variations did not overlap in their geographic distribution. It is therefore, it suggested that environmental factors may contribute to the skin color variations. It also assumed that habitat discontinuous and biogeography factors may also cause the loss of the connection between the original populations (vicarians) or follow colonization events (dispersal). The examined of 22 stomach contents of M. ikaheka shows this species is carnivorous, and prey on vertebrates such as amphibians, fish, reptiles, and Mammals. These snakes are opportunistic predators since they prey on all that can be captured, but mainly reptiles (61.5%), followed by mammals and fish (both 15.4%), and amphibians (7.7%). Although categorized as terrestrial animal, the diet study showed that M. ikaheka snakes often go into the water to hunt for fish (the sample from Yapen island), including eel (the sample from Aru island). Based on prey items indentified, there is evidence that M. ikaheka is cannibal. At this time, there still no record on reason for cannibalism, but it is assumed that cannibalism was due to competition between populations and means to control population.
Keyword: geographic variation, white snake, papua