Judul: Pengembangan Model Jaringan Syaraf Tiruan untuk Prediksi Curah Hujan Bulanan dan Pemanfaatannya bagi Perencanaan Pertanian di Kabupaten Subang dan Karawang
Abstrak: Produksi tanaman pangan secara nyata dipengaruhi oleh curah hujan dalam masa pertumbuhan dan perkembangan tanaman. Hal ini menyebabkan prediksi curah hujan menjadi hal yang sangat penting dalam perencanaan pertanian. Tujuan penelitian ini adalah untuk: (1) mengembangkan model prediksi curah hujan untuk prediksi curah hujan empat bulan ke depan, (2) mengembangkan model prediksi produksi padi 3 bulan ke depan, serta (3) Memprediksi produksi padi sebagai fungsi dari curah hujan bulanan. Model curah hujan dan model prediksi produksi padi dibangun dengan menggunakan teknik Jaringan Syaraf Tiruan (ANN). ANN merupakan model matematika yang mensimulasikan kerja jaringan syaraf pada makhluk hidup. Model ini merupakan paradigma pengetahuan baru karena meniru otak manusia dalam sistem pembelajaran dan penyimpanan memori.
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Judul: Penerapan Jaringan Saraf Tiruan untuk Pemodelan Prakiraan Curah Hujan Bulanan
Abstrak: Rain is very usefull for life but heavy rainfall will lead to disaster if not anticipated properly. Rainfall forecasting is very usefull to anticipate the occurrence of extreme weather. This study developed artificial neural network models for the next three months rainfall forecasting. The data used in this study was the climate data from 1983 to 2013. The climate data used as model input were rainfall, temperature and relative humadity (RH). Temperature and RH averaged on a month period and observed three times a day. The best result from this study was the model with the highest correlation value. The Correlation values of the best model for rainfall forecasting of the next three months were 0.78, 0.83, 0.77 respectively.
Keyword: Bogor Agricultural University (IPB), temperature, RH, rainfall, ANN, forecast

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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