Judul: Tingkah Laku Kancil (Tragulus javanicus) Yang Berhubungan Dengan  Aktivitas Makan Di Penangkaran
Abstrak: Mouse deer (Tragulus javanicus) is a wild animal with the status of protected based on the Government Regulation No. 7, 1999. Mouse deer population has decreased and could be extinct in the future. Captive breeding is one of the ex situ efforts to preserve this wild animal population. This research was conducted in September- December 2009 in Small Mammal Captivity, Zoology Division, Research Center for Biology, LIPI, Cibinong. A female mouse deer aged three years and had been captivated for 3 years was used as the observed. Variables measured were daily activities (eating, drinking, defecating, urinating, locomotion, grooming, ruminating, and resting) and selection of feeds: Ipomea batatas, Sechium edule, Psidium guajava, Luffa acutangula, Lagenaria leucantha, Phassolus calcaratus, Musa sp.), Phylanthus urinaria, Phaseolus radiatus, Brassica chinensis, Mikania cordata, and Phaseolus sp. Observations were carried out for 24 hours, from 06.00 am until 06.00 am the day after. Each periode was divided into 15 minutes observation intervals. One-zero sampling method was used in the data collecting then the data were analysed descriptively. Mouse deer prefered Ipomea batatas, Sechium edule, Psidium guajava, Luffa acutangula, Lagenaria siceraria, and Phassolus calcaratus, as feeds in the day light and Musa sp., Phylanthus urinaria, Phaseolus radiatus, Brassica chinensis, Mikania cordata, and Phaseolus sp. in the night. The percentage of mouse deer’s activities are 36,371 % resting, 15,312% ruminating, 15,558% locomotion, 13,814% grooming, 12,603% eating, 3,284% urinating, 3,058% defecation and 0% drinking. The captive should be given hiding place to acomodate resting, ruminating, and grooming activities.
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Judul: Study of Hunting and Utilization of Mouse Deer (Tragulus  javanicus) by The Suku Anak Dalam Tribe in Bukit Duabelas National Park
Abstrak: Kancil (Tragulus javanicus) merupakan salah satu jenis mamalia tergolong pada famili Tragulidae yang dimanfaatkan oleh Suku Anak Dalam. Data terkait perburuan dan pemanfaatan kancil oleh Suku Anak Dalam di Taman Nasional Bukit Duabelas saat ini masih terbatas. Oleh karena itu, diperlukan studi terhadap perburuan dan pemanfaatan kancil oleh Suku Anak Dalam di Taman Nasional Bukit Duabelas. Penelitian ini bertujuan untuk mengidentifikasi strategi perburuan kancil serta jenis dan bentuk pemanfaatan kancil oleh Suku Anak Dalam. Metode yang digunakan, yaitu observasi partisipatif, wawancara, dan studi literatur. Jumlah responden yang diwawancarai sebanyak 40 responden. Observasi partisipatif yang dilakukan, yaitu observasi dengan cara mengikuti kegiatan Suku Anak Dalam, mulai dari melakukan kegiatan perburuan hingga proses pemanfaatan hasil buruan. Analisis yang digunakan, yaitu analisis deskriptif dan uji chi-square. Hasil penelitian menunjukkan strategi perburuan kancil oleh Suku Anak Dalam dilakukan pada malam hari dengan teknik modern menggunakan kecepek. Intensitas keberhasilan perburuan kancil sebanyak 1 ekor kancil. Jenis pemanfaatan kancil oleh Suku Anak Dalam, yaitu untuk kebutuhan konsumsi dengan cara disalay (diasap), dibakar, direbus, digoreng, dan digulai. Hasil analisis uji chi-square menunjukkan adanya hubungan signifikan antara cara pemanfaatan dengan tingkat pendidikan dan mata pencaharian.
Keyword: Bukit Duabelas National Park, hunting, mouse dear, utilization

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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