Judul: Perencanaan Penangkaran Rusa Timor (Cervus timorensis de Blainville) dengan Sistem Farming : Studi Kasus di Penangkaran Rusa Kampus IPB Darmaga
Abstrak: Timor deer (Cervus timorensis de Blainville) is one of Indonesia wildlife species which population growth on natural habitat facing many threats as impact of human activities, like wild hunting and habitat destinction and fragmentation. Timor deer can be developed as livestock in the future its ability in difference geographic area of Indonesia. Farming system is appropriate model to be developed, because majority of Indonesian farmers ha ve about less than 1 hectares of farm area. The objectives of this research are: to analyse suitable location, to analyse breeding plan and economical aspect. The research was caried out in captive breeding field labratory of IPB Darmaga Campus. Equipments which have been used are: digital camera, rool meter, weighing-machine and a set of computer with design program. Materials which used are: map, timor deers and plastic bags. This research used field observation method, literature study and interview method. Pursuant to this research with based on bioecological condition, IPB captive breeding is suitable for timor deer captive location. Farm location was devideed into: headquarter zone 0,10 hectare (2,35%) and captive breeding zone 4,15 hectare (97,65%). Captive breeding management to be executed is farming system. Based on economic analysis, until 21,35% interest, captive breeding with farming system still give advantage if population size of parent stock in first year are 105, and 210 in second year and to be taken care until ninth year, with payback period 4,53 years.
Keyword: 

Judul: Tanggap Rusa Timor (Rusa timorensis de Blainville, 1822) Terhadap Pemelihara Baru di Penangkaran Rusa IPB Darmaga
Abstrak: Timor deer is one of the protected animal and have been captived many times as an effort to increase the population. One of the success factor in captivity is the deer’s health which is formed by adaptation process to the breeding place, the feed and the keepers. The objective of this study was to identify the response activities of the Timor deer to the new keeper. The given treatment were the new keeper with the staple feed, additional feed and cleaning cage. Timor deer that was given the treatment differentiated based on gender and age, which are the old female deer, adult male deer, adult female deer and a calf. Data were analyzed by quantitative descriptive analysis. All the deers which already being observed did not show any changes in the response activity to the new keeper who gave the grass as a feed. Supplying an additional feed by the new keeper causing the deers stayed away unless the individual adult male deer. The cleaning cage treatment by the new keeper had an influence of changing the response activity all the deers that being observed.
Keyword: timor deer, response activity, new keeper, Adaption

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: