Estimasi hasil sedimen berdasarkan korelasi antara potensi erosi lahan menggunakan Universal Soil Loss Equation (USLE) dan muatan aktual sedimen menggunakan metode Schaffernak di Bendungan Gintung = Estimation of sediment yield based on correlation between potential land erosion using Universal Soil Loss Equation (USLE) and actual sediment load using Schaffernak method in Bendungan Gintung

Erosi dan produktivitas lahan di daerah aliran Ciliwung hulu = Erosion and land productivity in upstream Ciliwung watershed

Analisis pengaruh sumber daya alam dan tingkat pendidikan terhadap pertumbuhan ekonomi di Indonesia (Studi kasus propinsi pada tahun 2003-2005) = Analysis of the impact of the natural resources and the level of the education to the Indonesia's economic growth (Provinces level 2003-2005)

Kerugian ekonomi (Economic Loss) Akibat Malaria di Kabupaten Aceh Utara tahun 2007 = Loss which is caused of Malaria at North Aceh district in 2007

Wilayah keterpaparan erosi akibat hujan di Kabupatan Kulon Progo, D.I Yogyakarta = The exposure of erosion region due to rain in Kulon Progo, D.I Yogyakarta