Judul: Alternative Analysis of Household Non-Organic Waste Management by The Community in Kebon Kopi Village, Bogor Regency
Abstrak: Sampah menjadi masalah utama di seluruh dunia terutama pada masalah timbulan dan pengelolaannya. Pengelolaan sampah sebaiknya menerapkan prinsip 3R yang berkelanjutan, sedangkan pengelolaan sampah di Kampung Kebon Kopi masih belum menggunakan prinsip 3R dan TPS juga tidak layak. Masyarakat banyak yang membuang sampah ke lahan kosong maupun dibakar. Tujuan dari penelitian untuk mengetahui timbulan sampah anorganik di Kampung Kebon Kopi, menganalisis faktor pendorong dan penghambat dalam membuang sampah anorganik yang dihasilkan ke lingkungan, dan menganalisis alternatif pengelolaan sampah anorganik rumah tangga yang dapat diterapkan di Kampung Kebon Kopi. Penelitian dilakukan di Kampung Kebon Kopi, Desa Cibanteng, Kabupaten Bogor. Metode yang digunakan adalah SNI-19-3964-1994, analisis deskriptif dan MCDA. Hasil penelitian menunjukkan timbulan sampah anorganik rumah tangga adalah 14.701,68 Kg/Tahun. Hasil estimasi total nilai ekonomi dari timbulan sampah anorganik rumah tangga Kampung Kebon Kopi, Kabupaten Bogor dengan pendekatan harga jual bank sampah adalah Rp 20.865.050/tahun. Komposisi sampah anorganik terbanyak adalah plastik kemasan dengan presentase 26,5%. Faktor yang mempengaruhi masyarakat Kampung Kebon Kopi dalam membuang sampah dibagi menjadi dua, yaitu ada faktor pendorong dengan aspek perilaku yang mendominasi masyarakat Kampung Kebon Kopi sebesar 46%, sedangkan untuk faktor penghambat mendominasi adalah aspek ekonomi sebesar 48%. Alternatif kebijakan yang dapat diprioritaskan adalah penjualan produk kreatif ecobrick di Kampung Kebon Kopi. Urutan alternatif pengelolaan sampah anorganik rumah tangga setelah ecobrick adalah pembuatan bank sampah dan pengelolaan dengan pengepul., Waste is a major problem throughout the world, especially in the problems of its generation and the management. Waste management should apply sustainable 3R principles, however the waste management in Kampung Kebon Kopi still does not implement the 3R principle as well as the temporary landfill is also not proper. Many people still dispose of their waste on vacant land or burned the waste. The need for effective non-organic waste management in Kebon Kopi Village is subsantial. The purpose of this study was to determine the generation of non-organic waste in Kampung Kebon Kopi, analyze the driving and inhibiting factors in disposing of non-organic waste that generated to the environment, and analyze alternative household non-organic waste management that can be applied in Kampung Kebon Kopi. The research was conducted in Kebon Kopi Village in Ciampea District. The methods used in this research are SNI-19-3964-1994, descriptive analysis and MCDA. The results showed that the generation of household non-organic waste was 14,701.68 kg/year. The results of the estimation of the total economic value of household non-organic waste generation in Kebon Kopi Village, Bogor Regency with a waste bank selling price approach is IDR 20,865,050/year. The most non-organic waste is plastic packaging waste 26.5%. The factors that influence the people of Kampung Kebon Kopi in disposing of waste are divided into two, namely there is a driving factor with behavior that dominates the people of Kampung Kebon Kopi by 46%, while the inhibiting factor dominates is the economic aspect by 48%. An alternative policy that can be prioritized is ecobrick creative products sales in Kebon Kopi Village. The next alternative for waste management after ecobricks is initiating waste bank and collaboration with waste collector.
Keyword: effectiveness, externality, household, Multi Criteria Decision Analysis, waste generation

Judul: Analysis of Household Food Waste Management in Kampung Kebon Kopi, Cibanteng Village, Bogor Regency.
Abstrak: Sistem Informasi Pengelolaan Sampah Nasional (2021) menyatakan bahwa komposisi sampah yang mendominasi di Indonesia adalah sampah sisa makanan sebesar 40,6%. Kampung Kebon Kopi RW 10, Desa Cibanteng merupakan kawasan pemukiman yang memiliki permasalahan sampah antara lain masyarakatnya masih membuang sampah dalam kondisi tercampur antara sampah organik dan anorganik, tidak memiliki Tempat Pembuangan Akhir Sampah Sementara (TPS) yang layak, sehingga sampah rumah tangga yang dihasilkan dibuang ke lahan kosong serta masih banyak masyarakat Kampung Kebon Kopi yang membuang sampahnya ke sungai. Tujuan penelitian ini adalah mengestimasi timbulan dan nilai kehilangan food waste, mengkaji faktor pendorong dan penghambat masyarakat dalam menghasilkan food waste, dan menganalisis alternatif kebijakan pengelolaan food waste rumah tangga yang dapat dilakukan di Kampung Kebon Kopi RW 10. Metode pengambilan sampel penelitian ini menggunakan metode SNI 19-3964-1994 dan Purposive Sampling. Metode analisis data yang digunakan pada penelitian ini ialah pendekatan harga bahan mentah dan bahan matang, analisis deskriptif, dan Multi Criteria Decision Analysis. Hasil penelitian menunjukkan bahwa timbulan food waste rumah tangga di Kampung Kebon Kopi RW 10 terhitung sebesar 319.631,18 kg/tahun, dengan komposisi timbulan food waste terbesar ialah nasi. Faktor pendorong masyarakat dalam menghasilkan food waste paling banyak yaitu faktor sosial dan budaya, sedangkan faktor penghambat terbanyak yaitu faktor agama. Alternatif pengelolaan food waste yang diminati berdasarkan preferensi masyarakat ialah pembuatan pupuk kompos sederhana menggunakan larutan gula dan EM4. Selain itu, berdasarkan analisis MCDA, dapat direkomendasikan alternatif terbaik untuk pengelolaan food waste di Kampung Kebon Kopi ialah menggunakan Maggot BSF (Black Soldier Fly). Kata kunci: konsumsi, nilai kehilangan, pemborosan sumberdaya, timbulan sampah., States that the composition of waste that dominates in Indonesia is food waste at 40,6%. The Kebon Kopi RW 10, Cibanteng Village is a residential area that has waste problems such as the community still disposes of garbage in a mixed condition between organic and inorganic waste, and does not have a proper Temporary Waste Disposal Site (TPS), so that household waste is generated thrown into vacant land, and there are still many people in Kebon Kopi Village who throw their garbage into the river. This research aims to estimate the generation and value of food waste loss, examine the factors that encourage and inhibit society in producing food waste, and analyze alternative household food waste management that can be carried out in Kampung Kebon Kopi RW 10. The sampling method of this study used the SNI 19-3964-1994 method and Purposive Sampling. The data analysis method used in this research is the approach to the price of raw materials and cooked materials, descriptive analysis, and Multi Criteria Decision Analysis. The results showed that household food waste generation in Kampung Kebon Kopi RW 10 was 319,631.18 kg/year, with rice is largest composition of food waste generation. The driving factor for the community in producing the most food waste is social and cultural factors, while the most inhibiting factor is the religious factor. Alternative food waste management that can be desired based on community preferences is the manufacture of simple compost using a solution of sugar and EM4. In addition, based on MCDA analysis, it can be recommended that the
Keyword: Consumption, Loss Value, Waste of Resources, Waste Generation

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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