Judul: Perbandingan berbagai metode ukuran jarak untuk pengenalan fonem  dengan MFCC sebagai ekstraksi ciri
Abstrak: This phoneme based voice recognition is included in the developing technology, speech to text that is a part of speech recognition. This study uses four distance measurement methods; euclidean distance, deviation standard euclidean distance, range euclidean distance and mahalanobis distance as pattern recognition, mel frequency cepstrum coefficient (MFCC) as extraction characteristic. The data used in this study consist of eleven words in Indonesian language, coba, fana, gajah, jaya, malu, pacu, quran, tip-x, visa, weda, and zakat. Phonemes are produced by segmentation process as much as twenty six phonemes, and then trained by distance measurement method to produce model. This study produces four models, using one data separation; 50% : 50%. Three overlaps; 75%, 50% and 25%. From the four distance measurement methods that used in phoneme recognition, deviation standard euclid distance method are the best of all methods, by using overlap 75% the accuracy is 89.23%.
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Judul: Penerapan Mel Frequency Cepstrum Coefficients (MFCC) Sebagai Ekstraksi Ciri Pada Pengenalan Fonem Dengan Euclid Standar Deviasi Sebagai Metode Ukuran Jarak
Abstrak: Pengenalan suara merupakan studi lapangan dalam pengolahan suara. Penelitian tentang fitur suara memiliki beberapa metode pengolahan, salah satunya adalah Mel Frekuensi Cepstrum Coefisien (MFCC). Fungsi MFCC adalah mengekstrak fitur suara. Penelitian ini bertujuan untuk menerapkan MFCC sebagai ekstraksi ciri dan Euclid Standard Deviaton sebagai metode pengukuran jarak pada pengenalan fonem. Dalam penelitian ini, data dibagi menjadi dua jenis, yaitu data dengan noise dan data tanpa noise. Kedua jenis data ini digunakan untuk menunjukkan bagaimana kebisingan memengaruhi hasil. Nilai kebisingannya adalah 10dB dan 15dB. Dari penelitian yang telah dilakukan dapat disimpulkan bahwa metode Euclid Standard Deviation dapat digunakan untuk pengenalan fonem. Hasil penelitian menunjukkan bahwa akurasi terbaik dicapai ketika fitur suara tanpa noise diproses menggunakan Euclid Standard Deviation, tanpa proses noise canceling yang memiliki akurasi 96%. Untuk perbandingan persentase antara data dengan noise 10dB dan data dengan noise 15dB, akurasi terbaik dicapai oleh data dengan noise 15dB yang memiliki akurasi 10,6%. Proses noise canceling pada data tanpa noise mengurangi persentasenya menjadi 91,3%. Sedangkan noise canceling mampu meningkatkan akurasi pengenalan suara. Untuk sinyal dengan noise 10dB, akurasinya meningkat dari 7,6% menjadi 8,6%. dan untuk sinyal dengan noise 15dB, akurasinya meningkat dari 10,6% menjadi 12,5%.
Keyword: Euclid Standard Deviation, MFCC, Phoneme Recognition

Judul: Mercury Toxicity and It’s Effect on Histopathology Change of Nile Tilapia (Oreochromis niloticus).
Abstrak: Nile tilapia (Oreochromis niloticus) is one of fish species that oportunity to contaminated with mercury. The effects of pollutants can damage living organisms organs and can cause death. The effects caused mercury had acute or chronic character. The aims of this study are to determine threshold and acute toxicity of mercury chloride (HgCl2) of Nile tilapia (Oreochromis niloticus), to assess the effect of mercury chloride (HgCl2) on several biometric parameters (survival, growth rate of average daily weighted, liver condition, bile and reproductive variability of Nile tilapia (Oreochromis niloticus), assess the level of damage to the histological structure of the gills, liver and kidney of Nile tilapia (Oreochromis niloticus) caused mercury chloride (HgCl2) exposure. This study was conducted from February to June 2013. Nile Tilapia (Oreochromis niloticus) were used in this study were female with average weight 20 grams or 11-13 cm length range. Toxicant materials used in this study was mercury chloride (HgCl2). Fish were reared in each aquarium 60x40x30 containing 48 liters of water. This study consists of three stages: a preliminary test, acute test, and sub-chronic test. To determine the changes in biometric condition of tilapia approximated by measuring the survival rate (SR), the growth rate of average daily weight , the content of mercury in the fish organs, hepatosomatic index (HSI), the relative bile volume (VER), gonadal soamtic index (IKG), fecundity and oocit diameter, tissue damage caused by mercury in fish organs by making histological preparations stained with hematoxylin and eosin. The median lethal concentration (96 hr, LC50) of Mercury Chloride was calculated as 1,64 mgL--1.The survival rate was highest in the control treatment (46,67 %) . Mercury chloride with concentration 0.196 mgL--1 show significant effect to changes HSI and relative bile volume, and oocyte diameter of Nile tilapia (p < 0,05). Mercury chloride with a concentration of 0,164 mgL-1 and 0,196 mgL-1 have not a significant effect on the growth rate of weight, gonadal somatic index and fecundity of Nile tilapia (p > 0,05). Mercury chloride cause damage to gills (hyperplasia, hypertrophy, proliferation and neukrosis), liver (hyperplasia, hemorhage, shrinkage of hepatocytes, proliferation and neukrosis) and kidney (hyperplasia, hemorrhage, shrinkage of the glomerulus, proliferation and neukrosis).
Keyword: Nile tilapia, Hepatosomatic indexs (HSI), histopathology