Judul: Protozoa Parasitik Darah dan Saluran Pencernaan pada Ular Sawah (Ptyas corros) di Kabupaten Ngawi
Abstrak: The purpose of this study is to give information about blood parasitic protozoan and gastrointestinal tract protozoan from Chinese Ratsnake (Ptyas korros). Ten Chinese Ratsnake that collected from Alas pecah village at Ngawi district used in this study. Faecal and blood sample were collected weekly for three weeks. Blood sample were stained by Giemsa and faecal sample were natively examined. Parasites were identified using morphological approach under microscope. The results showed that 5 parasites type had found on Chinese Ratsnake. They were consist of 4 intestinal parasites types (Giardia sp., Balantidium sp., Entamoeba sp., Cryptosporidium sp.) and blood parasites type (Plasmodium sp.). Those parasites can be potentially zoonotic. All snakes were infected by Plasmodium sp. Meanwhile Giardia sp., Balantidium sp., Entamoeba sp. dan Cryptosporidium sp. of the snake had been founded by number of 90%, 80%, 80% and 70% respectively.
Keyword: Ptyas corros, protozoan, intestinal tract, Blood

Judul: Gastrointestinal  helminths  infection  in  reticulated  python (python  reticulatus  schneider  1810)  kept  as  exotic  pets
Abstrak: Exotic pets adalah jenis satwa liar yang dijadikan hewan kesayangan karena memiliki ciri unik dan menarik untuk dipelihara, diantaranya yaitu ular sanca (Python reticulatus). Perlu mempelajari kemungkinan adanya cacing parasitik zoonotik pada hewan kesayangan tersebut. Penelitian ini bertujuan untuk mengetahui jenis, persentase, dan derajat infeksi cacing saluran pencernaan ular sanca yang dijadikan sebagai exotic pets. Sebanyak 5 sampel tinja dikumpulkan dari lima ekor ular dengan pengulangan sebanyak 3 kali pengambilan. Analisis sampel tinja menggunakan modifikasi metode McMaster, flotasi sederhana, saringan bertingkat dan Kato-Katz. Hasil penelitian menunjukkan bahwa semua ular menderita kecacingan (100%). Adapun jenis dan persentase kecacingan adalah Ascaris 60%, Trichuris 60%, Strongylid 20%, dan Oxyuris 20%. Rata-rata jumlah telur dalam tiap gram tinja (TTGT) adalah Ascaris 832 TTGT dan Trichuris 514 TTGT., Exotic pets are wild animals kept as pets for having unique characteristics and attractive, among them are the reticulated python (Python reticulatus). The zoonotic gastrointestinal helminths in exotic pets might been found. The objective of this research was to observe gastrointestinal helminths, percentage infection, and infection intensity of reticulated python kept as exotic pets. A total of 5 individual faecal samples were collected for 3 times. Samples were examined using the modified of McMaster, simple flotation, stratified filter, and Kato-Katz method. The research result shows that all animals (100%) were infected with gastrointestinal helminths included Ascaris 60%, Trichuris 60%, Strongylid 20%, and Oxyuris 20%. The average of the number of egg per gram (EPG) of Ascaris and Trichuris were 832 EPG and 514 EPG, respectifely.
Keyword: cacing parasit, exotic pets, saluran pencernaan, ular sanca

Judul: Pricing of Lookback Options with Floating Strike Price Using The Monte Carlo Method
Abstrak: Opsi lookback adalah opsi yang payoff-nya bergantung pada harga saham terbesar atau harga saham terkecil yang dicapai selama masa berlaku opsi. Opsi lookback dikatakan dengan floating strike price jika nilai dari strike price sebesar harga saham pada saat jatuh tempo. Nilai hampiran opsi lookback ditentukan dengan metode Monte Carlo, sedangkan nilai eksak didapat dari nilai simulasi terbesar yang mampu dihitung oleh komputer. Berdasarkan hasil penghitungan, nilai galat relatif yang dihasilkan semakin kecil dengan semakin bertambah banyaknya simulasi yang dilakukan, sehingga metode Monte Carlo untuk menghitung harga opsi lookback dengan floating strike price konvergen ke nilai eksaknya., Lookback option is an option whose payoff depends on the maximum or minimum of the asset price reached during the option period. The lookback option is said to be a floating strike price if the value of the strike price is equal to the stock price at maturity. The value of the lookback option is determined by the Monte Carlo method, while the exact value is obtained from the largest simulation value that the computer can compute. Based on the calculation results, the resulting relative error value get smaller with the increasing number of simulations performed. Therefore, the Monte Carlo method to calculate the price of the lookback option with the floating strike price converges to the exact value.
Keyword: lookback option, floating strike price, Monte Carlo method, convergent