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: Pengelolaan kesejahteraan burung paruh bengkok (Psittacidae) sebagai obyek daya tarik wisata di Kebun Binatang Gembira Loka Yogyakarta
Abstrak: Gembira Loka Zoo as they running their activity as a conservation institution needs to watch the animal welfare management, and also visitor perception and preference so the function of parrot (bird with curved bill) as tourism destination can be done optimally. Data collected on August 2014 in Gembira Loka Zoo Yogyakarta. The research showed that the achievement of parrot welfare in KBGL categorized as medium. There were 7 cage blocks in parrot welfare scoring. Lory cage has the highest score as big as 87 which categorized as good. Welfare component which need more attention is the one with low score which is the aspect of behaving naturally that affected by cage management andthe functions of cage. Visitor perception towards the welfare management condition was mostly good. Based on visitor preferences, the development of media interpretation needs to be made for parrot. The development that canbe madesuch as interpretation board reparation, coaching and training of Interpreter, and procurement of interpretation video.
Keyword: Bogor Agricultural University (IPB), parrot, media of interpretation, Gembira Loka zoo, animal welfare

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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