Judul: Pemodelan Curah Hujan dengan Model Fungsi Transfer Input Ganda
Abstrak: Floods are natural events that have erratic pattern. The time when floods occure are detectable, when we are able to forecast rainfall. The amount of rainfall is influenced by several factors, including temperature and humidity. Rainfall, temperature, and humidity are time series data that have are not independent. Forecasting for time series data can be done by using ARIMA model. Forecasting result from ARIMA models are not satisfying because it is not close to the actual data, which was also showed by its MAPE value of 37.01%. Hence the transfer function model was applied to forecast rainfall as the output variable along with temperature and humuidity factor as the input variable. The result from transfer function model used for short run forecasting (1 week) was quite good which can be seen by its MAPE value of 5.28%. Although transfer function model has a lower MAPE value compared to ARIMA model, transfer function model is not good enough to be used on long-term (1 month) rainfall forecasting, which is showed by its MAPE value of 31.68% and it could not detect flood occurence well. Based on those MAPE values it can be concluded that the transfer function model is still better than ARIMA model.
Keyword: Bogor Agricultural University (IPB), transfer function model, rainfall, ARIMA mode

Judul: Model fungsi transfer antara curah hujan dengan jenis dan liputan awan di sebagian Jawa Barat
Abstrak: Tujuan Penelitian ini adalah untuk menetapkan model yang menghubungkan deret besar curah hujan sebagai deret output dengan deret jenis dan liputan awan sebagai deret input dan dengan deret gangguan, kemudian mencoba menggunakannya untuk peramalan. Data yang digunakan dalam penelitian ini adalah data jenis dan prosentase liputan awan serta besar curah hujan untuk daerah 106° 107° Bujur Timur dan 7° Lintang Selatan dari bulan Januari 1982 sampai Juni 1986. Data Pertama diperoleh dari Stasiun Bumi Satelit Lingkungan dan Cuaca LAPAN Jakarta; dan data ke dua diperoleh dari Badan Meteorologi dan Geofisika Jakarta yang didukung oleh data yang diperoleh dari Dinas Pekerjaan Umum bagian Pengairan kabupaten Bogor, Tangerang, Serang dan Sukabumi. Penetapan model dilakukan dengan analisis deret waktu dengan menerapkan model fungsi transfer. Dalam hal ini, identifikasi model didasarkan kepada grafik fungsi korelasi silang antara deret input dengan deret output yang telah bersih gangguan, serta dengan memperhatikan grafik fungsi korelasi diri dan korelasi diri parsial deret ganggguan. Pendugaan parameter model dilakukan dengan metode kuadrat terkecil melalui cara pendugaan nonlinear.
Keyword: 

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