Judul: Analisis Tataniaga Bunga Krisan di Kecamatan Cugenang Kabupaten Cianjur
Abstrak: Chrysanthemum is one of cut flower that contribute highest production in Indonesia. From 2008 until 2012, chrysanthemum production has been increased from 101 777 126 to 397 651 571 stalks. The purpose of this research is to analyze marketing channels, marketing institutions, marketing functions, marketing structures, marketing conducts and marketing channel efficienct based on marketing margin, farmer’s share and profit ratio against cost. Observation and interview were conducted to farmers through random sampling technique then the next marketing institution using snowball sampling. The result of this research shows that chrysanthemum marketing in Cugenang consist of four channels with marketing institute consist of middleman and wholesalers. Highest profit can be achieved by farmers when using marketing channel III, the profit achieved by farmers is Rp473.00/stalk. Highest margin value also achieved on marketing channel III, that is Rp1 313.00/stalk. Marketing channel II is the one that have highest farmer’s share, that is 54.57 percent. Higher farmer’s share value compared to other marketing channel means that channel have higher efficiency compare to other channel operationally
Keyword: marketing, flower, efficiency, chrysanthemum, Bogor Agricultural University (IPB)

Judul: Analisis Efisiensi Pemasaran Bunga Krisan Potong di Kecamatan Sukaresmi Kabupaten Cianjur
Abstrak: Kabupaten Cianjur merupakan sentra produksi bunga krisan terbesar di Provinsi Jawa Barat. Kecamatan Sukaresmi adalah salah satu wilayah dengan produksi bunga krisan terbesar di Kabupaten Cianjur. Flukstuasi harga merupakan risiko yang dihadapi baik oleh petani maupun lembaga pemasaran. Tujuan penelitian ini ialah menganalisis efisiensi pemasaran melalui saluran, lembaga dan fungsi pemasaran serta keragaan pasar berdasarkan marjin pemasaran, farmer’s share, dan rasio keuntungan terhadap biaya pemasaran. Pengambilan sampel petani menggunakan metode purposive sampling dan untuk lembaga pemasaran menggunakan snowball sampling. Hasil penelitian menunjukkan bahwa terdapat tiga saluran pemasaran bunga krisan di Kecamatan Sukaresmi. Lembaga pemasaran yang terlibat antara lain petani merangkap pedagang pengumpul desa dan pedagang besar. Jumlah bunga krisan yang terjual pada penelitian ini sebanyak 1 166 700 tangkai. Saluran pemasaran II mendapatkan marjin pemasaran terendah sebesar 43.60 persen dan juga mendapat nilai farmer’s share tertinggi dengan nilai 56.40 persen. Sedangkan rasio keuntungan terhadap biaya pemasaran tertinggi juga pada saluran II dengan nilai 3.77.
Keyword: Bunga krisan, marjin pemasaran, produksi

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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