Judul: Klasifikasi Dokumen Bahasa Indonesia Menggunakan Metode Semantic Smoothing
Abstrak: The first supervised learning method for document classification is Naive Bayes classifier. A common problem that often occurs on simple methods like Naive Bayes is data sparsity. This problem especially occurs when the size of training and testing data is too small. Smoothing technique is a method for handling the sparsity problem, one method from smoothing technique is Semantic Smoothing. Document Agricultural Research Journal of holticulture domain is used for this research, this document contains of three classes. The average for accuracy of document classification on Semantic Smoothing is 92.88%. Results of the classification with Semantic Smoothing has been able to classify document of Agriculture Research Journal at holticulture domain.
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Judul: Klasifikasi Dokumen Menggunakan Background Smoothing
Abstrak: Naïve Bayes Classifier (NBC) is one of the methods for text or document classification. A common problem that often occurs on NBC method is data sparsity, especially when the size of training data is too small. One way to handle the sparsity problem is to use background smoothing technique. The aims of this research are to look at the background smoothing effect on short and long query, and to compare it with NBC on small training data. In this research, we use documents from the Agricultural Research Journal of horticultural domain. The results indicate that the accuracy of document classification on NBC+Background Smoothing is 92.3%, not significantly different from that obtained using only NBC. Improvement of the accuracy is only 1.78% from the results obtained on NBC. However, the results of the classification with NBC+Background Smoothing has been able to properly classify documents of Agriculture Research Journal at horticultural domain, so that it can be used to organize documents much easier for users to find information related to the documents.
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Judul: Analysis of Increasing Plasma Temperature for D-T  Fusion Reactions in Tokamaks with Ohmic Heating
Abstrak: Reaksi fusi terkendali atau termonuklir terkendali merupakan reaksi penggabungan dua inti atom ringan menjadi inti atom yang lebih berat dengan melepaskan energi. Reaktor fusi hingga saat ini masih dalam pengembangan demi terwujudnya pembangkit listrik tenaga nuklir berbasis reaksi fusi. Biaya kontruksi menjadi salah satu faktor penghambat perkembangan reaktor fusi dunia. Penelitian ini bertujuan untuk menghitung suhu yang dapat dicapai plasma yang dipanaskan secara ohmik dalam reaktor fusi bernama Tokamak dengan ukuran radius yang divariasikan. Ukuran radius mayor yang digunakan dalam perhitungan dengan rentang 2 m sampai 4 m serta radius minor 1 m sampai 3 m. Nilai tersebut ditetapkan lebih kecil dari Tokamak yang pernah ada demi terwujudnya penekanan pada biaya konstruksi. Ukuran radius mayor memiliki peranan dalam jumlah tumbukan partikel terjadi sehingga berbanding lurus dengan suhu yang dicapai plasma. Ukuran radius minor memiliki peranan dalam proses konversi panas melalui dinding reaktor sehingga hubungannya berbanding terbalik dengan suhu yang dicapai plasma., Fusion control or controlled thermonuclear is a reaction that combines two light atomic nuclei into a heavier atomic nucleus by releasing energy. Fusion reactors are currently still being developed to realize nuclear power plants based on fusion reactions. Construction costs are one of the factors inhibiting the development of world fusion reactors. This research aims to calculate the temperature that can be reached by ohmically heated plasma in a fusion reactor called Tokamak with varying radius sizes. The size of the major radius used in the calculation ranges from 2 m to 4 m and the minor radius from 1 m to 3 m. This value is set to be smaller than existing Tokamaks in order to reduce construction costs. The size of the major radius plays a role in the number of particle collisions that occur so that it is directly proportional to the temperature reached by the plasma. The size of the minor radius plays a role in the heat conversion process through the reactor walls so that the relationship is inversely proportional to the temperature reached by the plasma.
Keyword: radius major, radius minor, reaksi fusi, Tokamak