Judul: Identifikasi daun Shorea dengan Backpropagation Neural Network menggunakan ekstraksi fitur Discrete Wavelet Transform dan Ekstraksi Warna HSV
Abstrak: Dipterocarpaceae is a major timber tree of tropical rain forest. Shorea is a genus of the Dipterocarpaceae family which consists of around 194 species. Shorea is difficult to be identified because it has a lot of diversity. It takes knowledge from an expert in the field of Shorea to be able to identify the types of Shorea. Errors in identifying the type of Shorea wood can lead to inappropriate selection for the final usability. In this research, we perform identification to 10 species of Shorea from Bogor Botanical Garden using Discrete Wavelet Transform and HSV color extraction as the feature extraction methods. Backpropagation Neural Network is used as the classification technique. The results of this research using both the DWT Haar family and HSV for feature extraction, and the DWT Daubechies 2 family and HSV produce 90% accuracy. The combination between DWT Haar family, DWT Daubechies 2 family and HSV color extraction produces 93.33% accuracy. The conclusion from the results of this research is the significant effect of HSV color extraction in increasing the accuracy for the identification of Shorea leaves.
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Judul: Identifikasi Daun Shorea menggunakan KNN berdasarkan Komponen Warna dengan Praproses Discrete Wavelet Transform
Abstrak: A member of the Dipterocarpaceae family, Shorea, is the most commercially valuable timber. Shorea is difficult to be identified because of their similarity and hundreds of Shorea genus. This research developed a system to identify Shorea leaves using K-Nearest Neighbour (KNN) based on colour components. Discrete Wavelet Transform (DWT) is used as the preprocessing technique. Each component of G and V gave the best average accuracy of 80% by using eight level decomposition of DWT.
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Judul: Enteric Collibacillosis Pada Anak Babi Baru Lahir: Patogenesa dan Perubahan-Perubahan Patologisnya
Abstrak: Diare disebabkan oleh infeksi bakteri Escherichia coli pada anak-anak babi baru lahir yang peka terhadap en terotoksin produk bakteri tersebut. Dikenal sebagai colibacillosis. Patogenesa dari colibacillosis anak babi baru lahir adalah (1) infeksi oleh E. coli patogen, (2) proliferasi E. coli di lumen usus halus, (3) produksi dan pelepasan enterotoksin, dan (4) aktifitas toksin pada usus halus. Dalam proses proliferasi, adanya antigen pili K88 sangat penting karena memungkinkan bakteri perlekatan dengan epitel mucosa usus halus. mengadakan Setelah ko lonisasi dan proliferasi segera toksin dilepaskan. Akti- fitas toksin menginduksi sekresi yang berlebihan dari u- sus sehingga banyak cairan yang dikeluarkan ke lumen usus. Hal ini mengakibatkan banyak cairan dan elektrolit hilang sehingga timbul diare, dehidrasi dan asidosis yang sering menyebabkan kematian. Perubahan-perubahan patologis yang umum adalah dis tensi usus halus, dilatasi lambung dan infark pada kurva- tura mayor. Perubahan-perubahan histologis yang terjadi adalah enteritis hemorrhagica acuta, oedem dan kongesti pembuluh darah di lamina propria, akumulassi leukosit inti polimorf, sel monosit, dan inti sel mengalami piknosis Thrombus pada vena dan degenerasi serta desquamasi sel epitel usus….
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