Judul: Sistem Pakar Penentuan Jenis Budidaya Ikan Air Tawar Berdasarkan Lokasi dan Kualitas Air
Abstrak: This research developed an expert system designed to record and use knowledge, experience, and expertise of the experts in aquaculture to identify what types of freshwater fish farming based on location and existing water quality. K-fold cross validation method is used for sharing subset of data train and data test with three replications for each training and testing. Nominal distance is used to calculate distances on the nominal parameters, while Euclidean distance is used to calculate numerical parameters that will be combined using aggregate formula. The resulting distances are combined by aggregate formula. The classification method used for determining the appropriate class type is K-Nearest Neighbor that give the best average of accuracy at k = 3 with normalization, with a value of 97.41%.
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Judul: Sistem Pakar Fuzzy Penentuan Kesesuaian Jenis Ikan Berdasarkan Kualitas Air.
Abstrak: Pengetahuan tentang parameter kualitas air yang tepat adalah hal penting pada proses budidaya ikan karena optimalitas produksi ikan dipengaruhi oleh kualitas air. Penelitian ini bertujuan untuk membuat sistem pakar penentu jenis ikan budidaya berdasarkan kualitas air. Parameter kualitas air yang berupa parameter kimia adalah kandungan oksigen terlarut, amoniak, dan nitrit, sedangkan parameter fisika adalah suhu dan kecerahan. Ikan yang dipilih adalah ikan mas (Cyprinus carpio), gurame (Osphronemus goramy), dan patin (Pangasianodon hypophthalmus) masing-masing mewakili ikan dengan tolerasi rendah, sedang, dan tinggi terhadap kualitas air yang buruk. Hasil keakuratan sistem terhadap kualitas air parameter kimia sebesar 92% dan parameter fisika sebesar 85% untuk ikan mas, parameter kimia sebesar 63% dan parameter fisika sebesar 59% untuk ikan gurame, dan parameter kimia sebesar 89% parameter fisika sebesar 70% untuk ikan patin.
Keyword: expert system, fuzzy inference system, Mamdani

Judul: Peran nikotin dosis rendah terhadap profil glukosa darah dan insulin serta perubahan jaringan pankreas dan hati monyet ekor panjang (Macaca fascicularis) obes
Abstrak: Study of low dose nicotine intervention and its effect on blood and cellular level of obese cynomolgus monkeys has never been reported. The aims of this study were to evaluate the role of low dose nicotine on the profile of blood glucose, insulin level and cellular level alteration of pancreatic and hepatic tissue of obese cynomolgus monkey. Fourteen adult (aged 6–8 years) males cynomolgus monkeys grouped based on their Body Mass Index (BMI) into preobese (BMI=23.65–25.00) and obese (BMI ≥ 26.00) were used. Animals were grouped into four groups subsequently preobese with nicotine (pOb+), obese with nicotine (Ob+), preobese without nicotine (pOb-) and obese without nicotine (Ob-). Nicotine groups were fed with high fat diet mixed with nicotine dose 0.75 mg/kg body weight/day for three months and other groups without nicotine were fed monkey chow as control. Blood samples were collected every month for glucose analysis and insulin analysis at the end of study before necropsy was performed. Pancreatic and hepatic tissues were processed histologically and stained with hematoxylin-eosin and immunohistochemical method. The results showed that blood glucose significantly decreased (P<0.05) on the nicotine group, 28.37% (preobes) and 33.72% (obes) based on treatment duration compared to control group. Based on color intensity of granules cytoplasm of insulin producing cells or immunoreactive β-cells showed that non nicotine group were more reactive than those with nicotine group. As a conclusion, there was positive effect of low dose nicotine in maintaining the blood glucose level in normal range by stimulation of islet cells proliferation to maintain the production of insulin in the pancreatic islet. Nicotine low dose also affect to the hepatic parenchymal tissue that showed moderate level of hydrophic and fat degeneration, and necrosis. However, there were found hepatic cell regeneration.
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