Judul: Kinerja Produksi Glass Eel Ikan Sidat Anguilla bicolor bicolor dengan Padat Tebar 1,5 g/L, 2,0 g/L, dan 2,5 g/L pada Sistem Resirkulasi
Abstrak: Eel production is still limited by the seeds source which is on natural capture and nursery technology has not been developed. Efforts to increase seed production eel can be done by increasing the stocking density. We used seeds in average weight of 0.102±0.017 g/fish, kept in a container with a recirculation system. Artemia sp. nauply, Daphnia sp., and pasta were feed sources. The results showed the highest survival rate was fishes stocked at density of 1.5 g/L (60.84%) however this was not significantly different compared to fishes stocked in density of 2.0 g/L (51.08%). The lowest survival rate was shown by stocking density of 2.5 g/L (44.42%). The values of absolute growth rate, specific growth rate, coefficient of variance, and feed conversion were not significantly different among all treatment. The growth rate was ranging from 0.0012 to 0.0020 g/day, specific growth rate was ranging from 0.87 to 1.33% per day, feed conversion was ranging from 1.28 to 1.38, and the coefficient of variance was ranging from 34.85 to 36.08%. The best stocking density for nursery glass eel eel is 2.0 g/L.
Keyword: stocking density, resirculation, glass eel, eel

Judul: Kinerja Produksi Elver Ikan Sidat Anguilla marmorata dengan Padat Tebar 2 g/L, 3 g/L, 4 g/L pada Bobot Awal 7 g/ekor dalam Sistem Resirkulasi.
Abstrak: Eels has been known as one of aquaculture commodities with high commercial value. Both local and international demand of eel was relatively high. High market demand of eel could be anticipated wih high elver production which can be applied by increasing the number of eel’s stocking density. The purpose of this research was to analyze the effects of different stocking densities of 2 g/L, 3 g/L, 4 g/L with initial weight of 7 g/eel to the production of elver Anguilla marmorata reared in recirculating system during 40 days. Eels used in this research were at elver stage weighed 7±0.98 g/ eel and length 15±1 cm/ eel. The survival rate for all stocking density in this research was 100%. There are no significant differences found in growth rate, specific growth rate, and weight variance coefficient of all treatments with rate of 0.03-0.06 g/day, 0.38-0.70%, and 14.45-25.29% respectively. The results showed the best stocking density was 4 g/L which showed biomass growth rate and feed conversion ratio were 3.89 g/day and 1.16 respectively
Keyword: survival rate., stocking density, growth, eel

Judul: Aplikasi Mobile untuk Identifikasi Emosi Manusia Berbasis Teks pada Jejaring Sosial Twitter dengan Klasifikasi Decision Tree
Abstrak: Humans are social beings that need to communicate with others. Humans in communication often reveal emotions either directly or indirectly. Awareness of people’s emotions when communicating is one of the reasons of emotion recognition. Emotion recognitions divided into 3 categories, namely physiological signals, facial expressions, and voice. However the existing method has limitations in use or cost. A potential solution is affective computing, which can recognize emotion through typing patterns by collecting and analyzing user behavior and context from touchscreen, accelerometer, and GPS on the smartphone. This method was implemented as an Android app on Twitter social networking service. This research used decision tree classification method to identify 7 types of emotions i.e. happiness, surprise, anger, disgust, sadness, fear, and neutral by using 10 features. The data used in this study consisted 300 datasets. The highest accuracy in the research produced 44%.
Keyword: emotion recognition, decision tree, affective computing