Judul: Teknik Pemeliharaan dan Perilaku Harian Nuri Bayan (Eclectus roratus) di MBOF dan ASTI, Bogor
Abstrak: MBOF (Mega Bird and Orchid Farm) and ASTI (Animal Sanctuary Trust Indonesia) are two of the facilities that support eks-situ conservation programs in Indonesia. MBOF has commercial purpose in captive breeding of animals whilst ASTI deals with the maintaining of captive animals for release. The purpose of this research were to compare the maintenance techniques applied by MBOF and ASTI and to describe the Eclectus Parrots daily behaviour. This research was done from May until July 2014. Data were collected through interviews and observation. Behavioral observation was carried out on a pair of Eclectus Parrots using focal animal sampling and one zero sampling methods. The result showed that there were differences in maintenance technique in MBOF and ASTI, i.e. caging techniques, food type variation, feeding preparation method, and handling of sick animals. Those differences were due to different management objectives. The behaviours that had been identified were ingestive behaviour, resting, locomotion, body treatment and sexual behaviour. Most of the daily activities of Eclectus Parrot at both locations consisted of resting (frequency and duration of more than 40%).
Keyword: Bogor Agricultural University (IPB), maintenance technique., Eclectus Parrots, daily behaviour

Judul: Teknik Penangkaran dan Perilaku Harian Jalak Putih di Mega Bird and Orchid Farm Bogor, Jawa Barat
Abstrak: Mega Bird and Orchid farm (MBOF) has succesfully bred Black Winged Starling. The purpose of this research were to identify the captivity technique applied by MBOF and describe the Black Winged Starling‟s behaviours. This research was done from 12th of September to 30th of November 2013. The observation was carried out on a pair of Black Winged Starling. The result showed that the captivity technique in MBOF which include caging, food provisioning, health keeping and reproduction aspect are managed carefully. The practice had resulted 71,4% of parental breeding rate, 83,4% of egg hatching rate and 17,3% of dead chicks rate. The behaviors that had been identified were investigative behaviour, chirping, feeding, preening, resting, moving, bathing, dancing and defecating. Rest and bath performed along with rising temperature, flying avoid was done as response due to care activity. The birds were not stressed out due to care activity although temperature and humidity change.
Keyword: daily behaviours., captivity technique, black winged starling

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.
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