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 bicolor bicolor Berbobot Awal 3 g/ekor dengan Padat Tebar 2 g/L, 3 g/L, dan 4 g/L dalam Sistem Resirkulasi
Abstrak: Eels are one of the potential aquaculture commodities but the production technique has not been developed yet. The purpose of this research was to analyze the production performance of eels elver Anguilla bicolor bicolor at different stocking densities: 2 g/L, 3 g/L, and 4 g/L. Initial weight was 3 g/fish. Fish cultured in recirculation system the survival rate and growth performance were observed for 40 days. The experiment was design used Completely Randomize Design (RAL) with 3 replications for each treatment. The data that were obtained consist of survival rate, speed growth rate, weight variance coefficient, and feed conversion ratio. Increasing stocking density enhanced growth performance and decreased the feed conversion. The results showed that the highest growth rate of biomass was produced by the stocking density of 4 g/L of 7.79 g/day compared to those of stocking density of 2 g/L of 3.71 g/day and stocking density 3 g/L of 6.40 g/day.
Keyword: stocking density, growth, Anguilla bicolor bicolor

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