Judul: Analisis Model Difusi untuk Proses Perubahan Penduduk di Indonesia
Abstrak: Proses perubahan penduduk merupakan suatu fenomena di bidang demografi yang dapat dimodelkan dengan proses stokastik, yaitu dengan model difusi. Karakteristik model dengan proses difusi ini dicirikan adanya komponen deterministik (tolend) dan komponen stokastik (noise) dari suatu persamaan diferensial stokastik. Pada komponen stokastik yang merupakan peubah acak adalah proses Wiener. Nilai harapan dan ragamnya berturut-turut sebagai drift rate dan angka koefisien dari difusi.
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Judul: Analysis of stable and quasi-stable population growth models
Abstrak: Model pertumbuhan penduduk merupakan hal yang penting dalam mengantisipasi persoalan ekonomi, social, dan politik dalam suatu bangsa yang diakibatkan oleh perubahan jumlah penduduk. Perubahan jumlah penduduk dapat dipengaruhi oleh faktor fertilitas, mortalitas , dan migrasi. Karya ilmiah ini bertujuan untuk memodelkan pertumbuhan penduduk stabil dan kuasi-stabil lalu mengaplikasikannya dalam penduduk Indonesia tahun 2000, 2005 dan 2010. Hasil proyeksi akan dibandingkan dengan data sensus lalu akan diperoleh nilai galatnya. Hasil penelitian menunjukkan bahwa model kuasi-stabil dengan adanya faktor perbaikan kematian lebih baik daripada model stabil. Berdasarkan model kuasi-stabil hasil proyeksi penduduk Indonesia tahun 2015 sebesar 255,236,560. Keywords : pertumbuhan penduduk, kuasi-stabil, fertilitas, mortalitas., Model of population growth is essential to anticipate problems in the economic, social and political in a nation that affected by the change of population. Changes in a population can be affected by factors of fertility, mortality, and migration. This paper aims to model stable and quasi-stable population growth and then applies these models to population of Indonesia for 2000, 2005 and 2010. The projection results is compared to the census data and then error value will be obtained. The results showed that the quasi-stable model with mortality improvement factor is better than the stable model. Based on the quasistable model, prediction of population of Indonesia in 2015 is 255,236,560. Keywords: population growth, quasi-stable, fertility, mortality
Keyword: pertumbuhan penduduk, kuasi-stabil, fertilitas, mortalitas

Judul: Enrichment of organic selenium, inorganic selenium and  vitamin E in quail products through its supplementation in the diet and its potency  of quail eggs as an ingredient in selenium-rich egg juice
Abstrak: This study was aimed to achieve an optimum level of combine organic selenium, inorganic selenium and vitamin E in obtaining the best production and reproduction as well as the highest level of selenium in quail eggs. This study was conducted from January to August 2008. Numbers of observed quails were 720 (360 females and 360 males). The treatments were applied when the quails were six weeks old. Nine treatment diets were: To (commercial diet), T1(0.46 ppm inorganic Se + 43.50 ppm vitamin E), T2 (0.46 ppm inorganic Se + 87.00 ppm vitamin E), T3 (0.92 ppm inorganic Se + 43.50 ppm vitamin E), T4 (0.92 ppm inorganic Se +87.00 ppm vitamin E), T5 (0.46 ppm organic Se + 43.50 ppm vitamin E), T6 (0.46 ppm organic Se + 87.00 ppm vitamin E), T7(0.92 ppm organic Se + 43.50 vitamin E) and T8(0.92 ppm organic Se + 87.00 ppm vitamin E).
Keyword: egg yolk, glutathione peroxidase ( GSH-Px), hedonic test, rank test