Judul: Studi Populasi dan Penyebaran Babi Hutan Sulawesi (Sus celebensis Muller dan Schlegel, 1843) di Suaka Margasatawa Tanjung Peropa, Sulawesi Tenggara
Abstrak: Sulawesi Warty Pig (Sus celebensis) is endemic to Sulawesi, Indonesia. Very few data and information are available for this species. Study of demography and distribution are necessary to manage population this species in their natural habitat. This study was conducted in Tanjung Peropa Wildlife Reserve, Southest Sulawesi from Juni until July 2006. Population was estimated using line transect method. result of the vegetation analyses shown that the dominant species in riparian, lowland and bamboo forest were wewu, kapu wone and kowuna respectively. Distribution of Sulawesi warty pig in the study area, was systematic. For local distribution, distribution in bamboo and riparian forest were random and in lowland forest was systematic. There was 172 species of plant species recorded in study area, 109 species of them were food item of sulawesi warty pig. These animals were frequently found wallowing in bamboo and feeding in riparian forest. Rest sites of sulawesi warty pig in caves and rock shekters and nest area in hills. Deforestation and poaching were the main threats at their population in natural habitat. Status of sulawesi warty pig is still unprotected, thus the management of population in their natural habitat ws facing some difficulties. For conservation at this species its status should be given and clarified
Keyword: 

Judul: Studi Pakan dan Perilaku Makan Babi Hutan Sulawesi (Sus celebensis Muller dan Schlegel, 1843) di Suaka Margasatwa Tanjung Peropa, Sulawesi Tenggara
Abstrak: Sus celebensis is endemic to Sulawesi, Indonesia. S. celebensis has unique form, size and color. This animal is not protected by the law, not listed in the Red List Data Book (1996) IUCN and CITES. This case is one of the reasons that the hunt of S. celebensis can be done easily without sanction to the hunter. The research was conducted in Tanjung Peropa Wildlife Reserve, South East Sulawesi from Agustus to November 2006. Based on observation, Tanjung Peropa Wildlife Reserve is divided in three types habitat, used by S. celebensis including bamboo forest, riparian forest and lowland forest. Based on vegetation analysis, riparian forest is dominated by jolea (Cleistanthus sumatranus) for seeding, mehere (Drypetes cf. gfobosa) in sapling level, kasumeeto (Diospyros malabarica) in pole level, weewu (Planchonia valida) in tree level, and hao ani (Spatolobus ferrugineus) in under plant. Plant which most dominate in lowland forest is holea (Cleistanthus sumatranus) in seedling, sapling and pole level kapu gone (ficus sp) in tree level and tokoalinda (Elastotema rostratum) in under plant.
Keyword: 

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
Keyword: