Judul: Studi Di Perumahan Griya Pancoran Mas Indah Rw 14, Kelurahan Rangkapanjaya Baru, Kecamatan Pancoran Mas, Kota Depok
Abstrak: The waste management in Depok is a prime problem caused by rapid inhabitant growth with its social and economic activity so that increasing the quantity of middens. In order to solve the problems, the local government launched the Household Composting Program in Griya Pancoran Mas Indah, 14th administrative unit, Rangkapanjaya Baru Sub-district, Pancoran Mas District, Depok City, held from June 2008 until now. The target of this program is 310 households in Griya Pancoran Mas Indah. The aim of this study was to evaluate the impact of this program that is behavioral change caused by household participation level on this program. The analyses used in this study are interviews and questionnaires. The amounts of 77 respondents were chosen randomly and represented each neighborhood association. The tools of analysis were used namely frequency table, cross tabulation, Spearman Correlation Test, and Chi-Square Correlation Test. The implementation of this program was to fare well because the objectives, collective action, and collective agreement are appropriate to the terms of reference, however the stakeholders was not perform their function well and the phase of program was not covering on monitoring and evaluation phase yet. The result of primary data tabulation shows that the household participation level on this program tended to high because of the influence of internal factors (age, level of education, level of revenue, duration of work and be a resident of Griya Pancoran Mas Indah) and external factors (area of yard, attendance frequency and elucidation of program). The household participation level affected behavioral change (knowledge, attitude, and action) to manage domestic waste. According to the result of this study, the composting program in Griya Pancoran Mas Indah was successfully conducted on 14th administrative unit and can be implemented in the other sub-district in order to improve any case which not appropriate to terms of reference.
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Judul: Pengaruh Sosial Ekonomi Terhadap Perilaku Pengelolaan Sampah Rumah Tangga Kecamatan Sawangan Kota Depok
Abstrak: Economic growth and population give negative externalities such as garbage. Household waste is the largest contributor of garbage in Depok. Changes of household waste composition in Sawangan District is affected by social and economic condition. This study aims to (1) determine the characteristics of community in Sawangan (2) determine how much does the socio-economic change the composition of household waste in Sawangan District (3) determine the community behavior to household waste and (4) provide policy recommendations to the local government in waste management. Logistic regression analysis was used to know the opportunities of particular communities condition in producing the organic and the inorganic waste. Furthermore descriptive analysis was used to tell the community characteristics, and their behavior to household waste. Real estate residential tends to produce more inorganik waste than humble and rural residential. The production of real estate residential’s wastes are dominated by inorganic waste which are 55,19 % compared by organic waste which are 44,81 %. Higher education level and higher household income does not affect the household behavior in waste management. The government of Sawangan district is expected to create a new system such as advocacy to the people about household waste management and gives incentives as TPS building and capital for environmental activities
Keyword: Bogor Agricultural University, waste, socio-economy, management, household

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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