Judul: Implementasi strategi lampu lalu lintas yang optimal pada sistem arus lalu lintas kota dengan cellular automata
Abstrak: Lalu lintas kota dapat disederhanakan dalam bentuk model cellular automata kuadratik. Model tersebut merupakan kombinasi dari model Bilham-Middleton-Levin untuk arus lalau lintas dan model Nagel-Schreckenberg untuk jalan raya.
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Judul: Simulasi Sistem Otomatis Timer Traffic light Berdasarkan Densitas Kendaraan Menggunakan Sensor Inductive Loop dan Fuzzy Logic
Abstrak: Kemacetan lalu lintas menjadi salah satu masalah yang serius di Indonesia. Kemacetan disebabkan oleh penumpukan kendaraan pada simpang jalan. Sementara itu pengaturan lalu lintas di indonesia masih konvensional menggunakan fixed timer dalam mengatur lama lampu lalu lintas menyala. Pada penelitian ini, sistem yang dikembangkan adalah sistem lalu lintas yang dapat menyesuaikan durasi warna lampu hijau lampu lalu lintas secara otomatis sesuai densitas kendaraan masing-masing ruas jalan dengan menggunakan sensor inductive loop dalam perhitungan kendaraan pada tiap-tiap ruas jalan. Densitas kendaraan ditentukan menggunakan sensor inductive loop yang ditempatkan tiap ruas jalan. Hasil perhitungan densitas kendaraan digunakan sebagai masukan fuzzy logic untuk mendapatkan lama waktu lampu lalu lintas warna hijau menyala. Simulasi dari metode menggunakan sensor inductive loop dan fuzzy logic menghasilkan durasi nyala lampu lalu lintas yang sesuai dengan kebutuhan banyakya kendaraan untuk berpindah jalur pada masing-masing ruas jalan.
Keyword: densitas kendaran, fuzzy logic, inductive loop, pengaturan sistem lalu lintas

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