Judul: Identifikasi penerapan konsep green waste di Kampung Pulo Geulis, Kota Bogor
Abstrak: Green waste merupakan salah satu indikator green city yang digunakan sebagai upaya untuk mengurangi dan mencegah terjadinya masalah yang disebabkan oleh sampah dengan menerapkan konsep 3R (reduce, reuse, recycle) dan bank sampah. Masyarakat diharapkan turut serta berkontribusi dan mendukung penerapannya, sehingga dapat tercapai kota yang bersih, indah dan nyaman. Penelitian ini menggunakan analisis deskriptif kualitatif dan kuantitatif untuk mengetahui pengelolaan persampahan yang terdapat di Kampung Pulo Geulis, sehingga dapat diidentifikasi penerapan green waste yang telah dilakukan pemukiman Kampung Pulo Geulis. Hasil penelitian menunjukan, terdapat 13% dari 70 responden warga yang telah melakukan penerapan 3R. Dengan demikian dapat disimpulkan bahwa kesadaran masyarakat menerapkan 3R belum cukup untuk mengubah pola penanganan sampah di Kampung Pulo Geulis.
Keyword: Bogor City,, green waste, green city, descriptive analysis

Judul: Evaluasi Penerapan Konsep Kota Hijau di Kota Bogor
Abstrak: Development of urban areas in Indonesia is very rapid. City is a reflection of local environment condition, citizen behavior and local culture. Activity and development of the city will cause of various environmental problems like the imbalance between urban growth and the improvement of environmental quality. It bring about the city become not liveable. Because of that is very important to create a comfortable city with safety guarantee and be the one with nature by applying the concept of green city. Green city is a concept of a healthy city, considering ecological aspects. This research use Gap Analysis to find out the actual condition of Bogor City and compare it with the ideal condition of green city concept and evalauate the implementation with scoring method. The results of this research showed that Bogor has had a city development plan towards sustainable city, but the implementations still have not been maximized. The implementations not been spread through the region and have not been solve the urban problems of Bogor City.
Keyword: urban landscape, green city, gap analysis

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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