Judul: Motivasi dan Perilaku Menonton Program Acara Merajut Asa Trans7 pada Petani Desa Citapen, Kabupaten Bogor
Abstrak: This study aimed to asses the correlation between demographic characteristics with viewing motivation, the correlation between social groups affiliation with viewing motivation, the correlation between personality type with viewing motivation, and the correlation between viewing motivation with viewing behavior of watching Merajut Asa Trans7 program. The research sample was farm worker in RW 05 Citapen Village who had seen the program. The results of the study explain that gender associated with integration and social interaction motivation and additional work associated with personal identity motivation. Age, level of education, income levels, family’s size, and the type of personality was not associated with viewing motivation. The level of social group affiliation associated only with information motivation and personal identity motivation, while viewing motivation was not related with viewing behavior of Merajut Asa Trans7 program.
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Judul: Hubungan antara Motivasi Menonton dan Keterdedahan Tayangan Orang Pinggiran Trans7 dengan Sikap Prososial Remaja di Pedesaan
Abstrak: Televisi kini telah mampu menjangkau khalayak luas, termasuk masyarakat pedesaan. Penelitian ini bertujuan untuk menganalisis hubungan antara karakteristik remaja di pedesaan dengan motivasi menonton, motivasi menonton dengan keterdedahan program Orang Pinggiran, dan keterdedahan program Orang Pinggiran dengan sikap prososial remaja di pedesaan. Remaja dipilih sebagai unit analisis, sebab masa remaja adalah masa peralihan, ketika individu tumbuh dari masa anak-anak menjadi individu yang memiliki kematangan. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah teknik wawancara dengan menggunakan kuesioner. Hasil penelitian ini menunjukkan bahwa terdapat hubungan antara usia, jenis kelamin, pendidikan terakhir, jenis pekerjaan, tingkat interaksi dengan keluarga, dan tingkat interaksi dengan teman dengan motivasi menonton program Orang Pinggiran dan antara motivasi menonton dengan keterdedahan tayangan tersebut. Selain itu, keterdedahan program Orang Pinggiran berhubungan dengan sikap prososial remaja dalam aspek kognitif dan afektif.
Keyword: adolescents in rural area, exposure, prosocial behavior

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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