Judul: Kesejahteraan Hewan Kucing Ras pada Cattery di Wilayah Jabodetabek.
Abstrak: Peningkatan gaya hidup masyarakat untuk memelihara kucing ras murni, mendorong pertumbuhan peternakan kucing atau cattery di Indonesia. Kucing ras murni adalah kucing yang memiliki garis keturunan yang tercatat di asosiasi internasional. Penelitian ini bertujuan untuk mengukur implementasi kesejahteraan kucing ras pada peternak kucing di Jabodetabek. Data didapatkan dari sepuluh cattery yang terdiri atas lima cattery senior dan lima cattery junior mulai Oktober sampai November 2018. Penelitian ini dilakukan dengan observasi dan wawancara menggunakan formulir survei dan kuisioner dengan skor 1-4 berdasarkan lima prinsip kesejahteraan hewan, yaitu bebas dari lapar dan haus, bebas dari rasa tidak nyaman, bebas dari sakit, cedera dan penyakit, bebas dari rasa takut dan tertekan serta bebas mengekspresikan perilaku alamiah. Uji regresi juga dilakukan untuk mengukur pengaruh usia dan pengerahuan cattery terhadap kesejahteraan kucing. Hasil penelitian menunjukan implementasi kesejahteraan kucing ras pada cattery di Jabodetabek pada kategori sedang dan baik. Sebanyak 30% cattery masuk kedalam kategori sedang dengan skor berkisar 3.45-3.48 dan sebanyak 70% cattery masuk kedalam kategori baik dengan skor 3.57-4.00. Implementasi pada prinsip bebas dari rasa sakit, cedera, dan penyakit memiliki nilai rataan terendah (3.61) dibandingkan prinsip lain. Sebanyak 30% cattery tidak memiliki ruang isolasi untuk kucing sakit dan 10% cattery masuk pada kategori kurang pada komponen biosekuriti. Usia cattery dan pengetahuan kesejahteraan hewan pemilik cattery tidak berpengaruh secara signifikan terhadap implementasi kesejahteraan kucing.
Keyword: kesejahteraan hewan, kucing, cattery, breeder

Judul: Tingkat Pengetahuan Pemilik Kucing di Kota Bogor terhadap Kesejahteraan Hewan dan Keterkaitannya dengan Kondisi Kesehatan serta Manajemen Pemeliharaannya.
Abstrak: Keep a pet is one of popular hobby in this society today. This research provides information the knowledge of cat owners in Bogor City about animal welfare. The data taken by using questionnaire to 50 respondents from five villages in Bogor City, from April 2014 until September 2014. The electoral wards and respondents conducted in purposive method. Respondents were classified based on income, education, age, gender, domicile (villages) and the number of cats. Cat welfare status observed based on the physical condition which includes body condition score, skin disease, wounds, limping, and worm infestation. The results of this research showed most respondents had high (62%), medium (36%), and low (2%) knowledge of animal welfare. Observations regarded the condition of overall the cat body can be said good. There were a significant relationship between knowledge with one aspect of characteristic respondents (the number of cats) and cat health management (vaccines). There is no significant relationship between knowledge with cat maintenance management.
Keyword: animal welfare, cat, knowledge

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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