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 Penentuan Kelayakan Usaha Budi Daya Pembenihan Ikan Gurami
Abstrak: This study develops an expert system that is designed to record and use the knowledge, experience, and expertise of the experts in the field of aquaculture feasibility to determine the feasibility of gouramy hatchery. The utilized inference method is Tsukamoto Fuzzy Inference System (FIS) with travezoid curve membership functions. The weighted average is used as the defuzzification method. The parameters used are fuzzy and non-fuzzy. The fuzzy parameters are temperature, amonia (NH3), disolved oxygen (DO), alkalinity, Puissance negative de H (pH), pond water depth, and hardness. The non-fuzzy parameters are the forms of business entities, business licenses, benefits to society, consumer behavior, and the return cost ratio (R/C ratio). Seven fuzzy input parameters has 11 rules for technical scale that are determined by experts to produce the business analysis output. The develoved expert system has been able to analize the feasibility of gouramy hatchery with a capability close to that of expert
Keyword: weighted average., membership functions, hatchery, fuzzy inference system, defuzzification

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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