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: Efisiensi Pemasaran Dan Determinan Penentu Pilihan Saluran Pemasaran Bunga Potong Krisan Di Kabupaten Cianjur
Abstrak: Bunga potong krisan adalah komoditas hortikultura yang memiliki tingkat produksi tertinggi di Indonesia dan diminati oleh masyarakat karena memiliki keanekaragaman bentuk bunga, warna bunga dan jenis bunga. Bunga potong krisan juga memiliki beberapa manfaat yaitu dapat digunakan sebagai bahan dasar rangkaian bunga, penyerap polusi bahkan tanaman obat tradisional. Salah satu sentra bunga potong krisan nasional adalah di Kabupaten Cianjur yang menyumbang 53% total produksi untuk Provinsi Jawa Barat. Produksi bunga potong krisan yang tinggi ternyata juga diikuti dengan semakin tingginya selisih harga ditingkat petani dengan harga di tingkat pedagang akhir setiap tahunnya. Penelitian ini bertujuan untuk menganalisis efisiensi dan juga mengetahui determinan penentu pilihan saluran pemasaran oleh petani bunga potong krisan di Kabupaten Cianjur. Responden dalam penelitian ini meliputi petani bunga potong krisan, pedagang pengumpul, pedagang besar dan floris. Efisiensi pemasaran dianalisis menggunakan Composite index method dan Acharya and Aggarwal’s method, dengan menggunakan tiga indikator yaitu marjin pemasaran, Farmer’s Share dan biaya pemasaran. Determinan penentu pilihan saluran pemasaran oleh petani bunga potong krisan di analisis dengan menggunakan regresi multinomial logit yaitu dengan menetapkan saluran pemsaran yang efisien sebagai variabel acuan. Hasil dari penelitian ini terdapat tiga saluran pemasaran bunga potong krisan di kabupaten Cianjur, yaitu: (1) petani–pedagang pengumpul–pedagang besar– konsumen, (2) petani–pedagang besar–konsumen, dan (3) petani–floris–konsumen. Saluran pemasaran yang paling efisien adalah saluran 2, karena memiliki nilai composite index terkecil yaitu 1, dan berdasarkan analisis Acharya and Aggarwal’s method, saluran 2 memiliki nilai efisiensi terbesar yaitu 1,14. Determinan penentu pilihan saluran pemasaran oleh petani bunga potong krisan dipengaruhi oleh enam faktor, yaitu usia, pendidikan, volume penjualan, harga per ikat, ikatan modal dan biaya transportasi. Berdasarkan hasil penelitian terlihat bahwa saluran yang efisien adalah saluran 2 (melalui pedagang besar), sedangkan saluran yang paling banyak dipilih petani adalah saluran 1 (melalui pedagang pengumpul) karena adanya keterikatan modal, oleh karena itu perlu adanya dukungan dari pemerintah daerah maupun pusat berupa pendampingan atau bantuan dalam hal mendapatkan modal usaha, bantuan bibit, pupuk, agar petani tidak selalu tergantung kepada pedagang pengumpul. Pendampingan dan bantuan modal usaha ini juga perlu pengawasan agar bantuan dapat termanfaatkan dan tepat sasaran., Chrysanthemum cut flowers are horticultural commodities that have the highest production level in Indonesia and are in demand by the public because they have a variety of flower shapes, flower colors and types of flowers. Chrysanthemum cut flowers also have several benefits, namely they can be used as the basis for flower arrangements, absorb pollution and even traditional medicinal plants. One of the national chrysanthemum cut flower centers is in Cianjur Regency, which accounts for 53% of the total production for West Java Province. The high production of chrysanthemum cut flowers was also followed by a higher price difference at the farmer level with the price at the final trader level each year. This study aims to analyze the efficiency and also determine the determinants of the choice of marketing channel by chrysanthemum cut flower farmers in Cianjur Regency. Respondents in this study included chrysanthemum cut flower farmers, collectors, wholesalers and florists. Marketing efficiency was analyzed using the Composite index method and Acharya and Aggarwal's method, using three indicators, namely
Keyword: farmers share’s, lembaga pemasaran, logistik biner, marjin pemasaran

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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