Judul: Pemodelan Arus Lalulint as Dengan Pendekatan Model Mikroskopik & Makroskopik
Abstrak: Karya ilmiah ini membahas pemodelan arus lalu Hotas kendaraan dengan pendekatan model-model mikroskopik yang disajikan dengan model mobil berurutan dan model lajur ganda, sena pemodelan makroskopik sebagai lanjutan dari pemodelan mikroskopik. Pada tingkat rnikroskopik pemodelan setiap kendaraan digambarkan oleh koordinat ruang x dan kecepatan v untuk waktu JEiR.+. Pada pemodelan mikroskopik. reaksi pengemudi digambarkan dalam persepsi threshold, di antaranya ambang reaksi negatif, arnbang reaksi positif, ambang reaksi pada jarak berbahaya, ambang reaksi pada jarak aman dan ambang reaksi pada jarak yang diinginkan. Dalam kasus Jajur ganda dirumuskan ambang reaksi perpindahan lajur ke sebelah kanan (HR), perpindahan lajur ke sebelah kiri (HJJ. pengereman (HB), percepatan (HA), dan pengemudian bebas (Hf). Sedangkan model makroskopik merupakan lanjutan dari pemodelan mikroskopik, yaitu dengan mengamati kerapatan p, kecepatan rata-rata u, dan ragam kecepatan kendaraan f:} dari situasi lalu Iintas yang diamati.
Keyword: 

Judul: Tinjauan Matematis pada Model Makroskopik dan Mikroskopik Arus Lalu-lintas
Abstrak: Traffic flow phenomenon can be described through mathematical model such as continuous dynamic model with an ordinary differential equation so that it can be solved with integral factors. In this paper three simple models of traffic flow are discussed, i.e, two macroscopic and one microscopic models. Macroscopic model formulates dynamics of the traffic flow that occurs on a large number of vehicles on a road. While the microscopic model explains drivers’ behavior in their interaction with other vehicles ahead, i.e, car-following model. This paper shows the existence of ordinary differential equation found in the traffic flow model and indicates some different representations in the context of the same model. It also reviews a simple model of traffic flow along a single link, which leads to some unexpected results, i.e, it can express the solution model in term of link outflows as well as trip time. In the microscopic model, simulation is done to illustrate the behavior of the drivers with a sensitivity coefficient as a benchmark parameter.
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