Judul: I-PEDIA: Aplikasi Mobile untuk Identifikasi Penyakit Tanaman Padi dengan Fuzzy Entropy dan Probabilistic Neural Network
Abstrak: This research developed a mobile application for paddy plant disease identification system using fuzzy entropy and classifier probabilistic neural network (PNN) that runs on mobile. Paddy plant diseases is one of the problems on increasing paddy production. Fuzzy entropy is used for image feature extraction. PNN is used because training PNN is fast. Training data and testing data divided by k-fold cross validation with a k value of 5. Before training data and testing data are extracted, the images are enhanced using the Laplacian filter. The accuracy of paddy diseases identification without the Laplacian filter is 91.46% while accuracy of paddy diseases identification using the Laplacian filter is 90.55%.
Keyword: k-fold cross validation, paddy plant disease, probabilistic neural network, fuzzy entropy

Judul: Aplikasi Mobile Untuk Identifikasi Tumbuhan Obat Menggunakan Local Binary Patterndengan Klasifikasi Probabilistic Neural Network
Abstrak: This research proposed a new mobile application for medicinal plants identification. Local Binary Pattern (LBP) is used to extract image features and Probabilistic Neural Network (PNN) is used to classify medicinal plants on mobile phone. LBPP,Rriu2 was used as LBP descriptor in this research, which uses rotation invariant and uniform patterns of image texture. The aim of this research was to implement this application in open source Android 2.3 (Gingerbread) operating system. The data used is the medicinal leaf image from Botanical Garden, Bogor Indonesia which consist of 15 species with 10 variations for each species. The experiment showed that the accuracy of identifications is 31.11% and the computation time is 50.02 seconds.The experimental result show the accuracy is still low, so this research need to be explored further to improve the accuracy. This new mobile application is useful to help user in plant identification.
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Judul: Sintesis dan Karakterisasi Stronsium Titanat dengan Variasi Konsentrasi Pendadah Bismuth (III) Asetat (Bi(CH3COO)3)
Abstrak: Telah berhasil dilakukan Sintesis Stronsium Titanat (SrTiO3) didadah Bismuth Asetat (Bi(CH3COO)3) dengan variasi konsentrasi pendadah 0%; 0,5%; 1%; dan 1,5%. Larutan konsentrasi ditetesi diatas substrat silikon (Si 100) tipe-P dengan metode chemical solution deposition (CSD) dan teknik spin coating. Film yang telah jadi dilanjutkan proses annealing dengan kenaikan suhu 1,67oC/menit dan ditahan pada suhu 850oC selama 8 jam lalu didinginkan pada suhu kamar selama 12 jam. Proses selanjutnya film ditimbang kemudian dilanjutkan dengan metode volumetrik untuk mencari ketebalan film tipis. Ketebalan yang diperoleh yaitu 3,904725 μm, 4,295197 μm, 4,68567 μm, 5,076142 μm. Hasil analisis sifat optik dengan fungsi Kubelka-Munk untuk direct transition didapatkan band gap 3,463686 - 3,566327 eV. Uji XRD yang dianalisis menggunakan Metode Cramer-Cohen menghasilkan parameter kisi (a=b=c) yaitu 3,835 Å, 3,837 Å, 3,909 Å, 3,913 Å dengan struktur kristal kubus., Has been successfully Synthesis of Strontium Titanate (SrTiO3) in Bismuth Asetat (Bi(CH3COO)3) with variant concentrations of 0%; 0.5%; 1%; and 1.5%. The concentrated solution was dripped onto a P-type silicon (Si 100) substrate using the chemical solution deposition (CSD) method and spin coating technique. The film was continued annealing process with an increase in temperature of 1.67oC/minute and held at 850oC for 8 hours and then cooled at room temperature for 12 hours. The next process is that the film is weighed and then proceed with the volumetric method to find the thickness of the thin film. The thicknesses obtained were 3.904725 μm, 4.295197 μm, 4.68567 μm, 5.076142 μm. The results of the analysis of optical properties with the Kubelka-Munk function for the direct transition obtained a band gap of 3.463686 - 3.566327 eV. The XRD test analyzed using the Cramer-Cohen method yielded lattice parameter (a=b=c) namely 3.835 Å, 3.837 Å, 3.909 Å, 3.913 Å with a cubic crystal structure.
Keyword: CSD, energy band gap, lattice parameter, spin coating, SrTiO3