Judul: IPB (Bogor Agricultural University)
Abstrak: TPA Bantar Gebang yang beroperasi sejak tahun 1989 selesai kontrak pakainya oleh Pemerintah Provinsi DKI Jakarta tanggal 31 Desember 2003. Untuk mengatasi permasalahan TPA Sampah Pascaoperasi, perlu dilakukan kajian dan analisis untuk melihat kemungkinan yang terjadi dimasa depan didasarkan pada keadaan saat ini seperti sumberdaya dan lingkungan alam, sosial ekonomi, fisik kimia, mikrobiologi, dan keterlibatan masyarakat dalam pemanfaatan TPA Sampah Pascaoperasi Berbasis Masyarakat. Tujuan dan manfaat dari penelitian ini antara lain adalah: 1). Melakukan evaluasi terhadap kualitas air sumur, air sungai, air lindi dan mikrobiologi; 2). Memilih alternatif yang sesuai untuk pemanfaatan TPA Sampah Pascaoperasi Berbasis Masyarakat.
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Judul: IPB (Bogor Agricultural University)
Abstrak: TPA Cipayung has been operated since 1992, at Cipayung, Pancoran Mas, Kota Depok. To face the problem around TPA Cipayung, it is important to development management some analysis. The research purpose of this research were: 1) to explain environmental quality, social, economic and health condition around Cipayung garbage’s TPA area at Depok city. 2) to analyse policy strategy that related to effort of managemant of Cipayung garbage’s TPA at Depok city. 3) to design alternative policy of management of Cipayung garebage’s TPA at Depok city. The research methods used descriptive analysis to analyze the quality of up down wells, BAP, lindi water, and microbiology. Then, the results were compared with Permenkes RI No. 416/MenKes//Per/IX/1990, Kriteria Mutu Air PPRI No.28/2001. Gol. III, Baku Mutu: SK Gubernur Jawa Barat No. 6/1999. Sampel water analysis was conducted in laboratory of PT. Mutu Agung Lestari. The condition of social economy and health in location around of TPA Cipayung were analyzed by descriptive analyzed. Data of interview result with profesional about policy of management TPA Cipayung was analyzed with AHP method, using expert choice 2000 program. Analysis of garbage management model in TPA Cipayung using Microsoft Office Excel and Stimulation model analysis of dinamic system using Stella software vertion 8.0. The result of this analysis show the physical variabel of water quality in three location still under NAB that were permitted. Except the temperatur variabel have rather high than NAB. The result of many chemical variabel in three location sampel have high then NAB that permitted, such as Fe, Mn, NO2 -N, BOD5, COD, DO, Zn, and Fenol. The result of social economy aspect are there is some problems around TPA Cipayung and the benefiit of economy that TPA Cipayung’s society can get. Health of society in location around TPA Cipayung in general, suffering diare, fever, skin infection and ispa.The result of Analysis Hierarchy Process (AHP) showed that (1) alternative of policy is the optimalization of garbage management, (2) the optimalization of cleaning service, (3) third priority is the increase of stakeholder’s participation. (4) law enforcement. The result of garbage management strategy analisys in TPA Cipayung recomendation program 3R+1P, start from the garbage source, until the garbage that throw in to TPA getting low and can minimalize the garbage transportation cost to TPA.
Keyword: Sanitary Landfill, Unit Pengolahan Sampah (UPS), West Java, Analytical Hierarcy Process

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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