Judul: Phosphate solubilizing microorganism : its role to the soil phosphate and P fertilizer efficiency of sugarcane
Abstrak: Dari tahun ke tahun, Indonesia selalu mengimpor gula untuk mencukupi kebutuhan nasional, kecuali pada tahun 1984. Dalam upaya mengurangi impor gula tersebut, maka beberapa usaha dilakukan untuk meningkatkan produksi gula, diantaranya : (1) intensifikasi pada sistim pertanaman tebu yang sudah mapan, (2) ekstensifikasi dengan memperluas pertanaman tebu ke areal bukaan baru dengan sistirn tegalan, terutama di luar Jawa, (3) rehabilitasi pabrik-pabrik gula peninggalan Belanda agar lebih efisien dalam menghasilkan gula, dan (d) memperbaiki sistim managemen kebun dan perkebunan tebu).
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Judul: Analisis efisiensi proses produksi untuk peningkatan kinerja industri gula tebu (Cane Sugar) (Studi kasus di PG. Jatiluhur Majalengka, Jawa Barat)
Abstrak: Sugar is one of the most important commodities in Indonesia. Most of sugar manufacturing in Indonesia was owned or sun by Indonesian government. Sugar consumption rate cannot be fulfilled by local sugar manufacturer, that's why importing sugar became an option. The insignificant rate of increasing of sugar production every year make import rate is keep increasing Efficiency in sugar production process is one thing that need some attention. This time, most of sugar factory that owned by government are decreasing in productivity. PG Jatitujuh is sugar processing factory that processing cane into white crystal sugar (SHS) and one of sugar factory in Java that still runs well. Efficiency in sugar production process can be analyzed by using PG Jatitujuh production data. Analysis result shows that efficiency in sugar production process can be rendered, by optimalised increasing of imbibitions water. The optimum value of imbibitions water is 25-30 percent of processed cane. The decline of pol value in the amount of 0,01 percent is equal with 1,729 ton or equal with Rp. 8.297.865,- recovery sugar £rom bagasse. The decline of HK value in the amount of 0,01 percent is equal with 0,273 ton or equal with Rp. 1.3 12.524,- recovery sugar from molasses.
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Judul: Perbandingan SOM dan LVQ pada Identifikasi Citra Wajah dengan Wavelet sebagai Ekstraksi Ciri
Abstrak: Face recognition is one of challenging research topics in computer science because human face is difficult to be modelled. In this research, SOM and LVQ are proposed for frontal face recognition. The purpose is to compare LVQ and SOM based on identification accuracy. Training uses 400 images from 20 different individuals, and the dimension is 180 x 200 pixels. The data are retrieved from University of Essex, UK. Coefficient approximation at Haar wavelet level 6 is used as feature for classification and clustering process. K-fold cross validation with 10-fold is used to divide training and testing data. The experiment is divided into 3 sets, i.e., the experiment using SOM, LVQ, and LVQ initialized by SOM. The highest accuracy achieved by SOM is 97.8974%, while both LVQ and LVQ initialized by SOM achieve 100% accuracy. Based on the accuracy, LVQ proves to be better than SOM for frontal face recognition. This research needs to be improved in order to recognize various poses and changing expressions.
Keyword: Self Organizing Map (SOM), Learning Vector Quantization (LVQ), K-fold cross validation, Haar wavelet, frontal face recognition