Judul: Analisis Perilaku Konsumen Terhadap Pembelian Belimbing Dewa di Kota Depok.
Abstrak: Indonesia as an agricultural country having diverse types of agricultural commodities. Diversity is an asset that has the potential to be developed, one of the subsectors that have potential is horticultural subsector. Based on data from the production of fruit crops in Indonesia from 2008 until 2012, we can be seen that in general the amount of fruit production has increased. For commodity starfruits, the total production in 2008 was 72,397 tons and increasing up to 130,762 tons in 2012. Increasing in total production of these starfruits showed that the starfruits is a potential fruit crop to be developed. Depok City in West Java is one of the Dewa starfruit production center, because of that need the survey for knowing about the consumers satisfaction towards of the Dewa starfruit purchasing and its implication to marketing mix strategy. This study is aimed to review and analyzing consumers satisfaction towards of the Dewa starfruit purchasing in Depok City. The survey was conduct to 60 respondents of Dewa starfruit consumers in Depok region. The analysis tools are descriptive analysis, importance performance analysis, and Customers Satisfaction Index (CSI). The result of this analysis indicate that the respondents to influence of many factor in purchasing process of the Dewa starfruit that are the culture, family member, situation and purchasing time, revenue, knowledge about the Dewa starfruit, life style, and information media. The marketing mix strategy that should be done to increase competitive advantages and market share of Dewa starfruit, as well as recommended the marketing mix strategy are to create inovations from Dewa starfruit commodity, still preserve the Dewa starfruit price, to develop distribution channel in Indonesia and other country,and give the discount price for Dewa starfruit consumers.
Keyword: marketing mix strategy., purchasing, consumers satisfaction, Dewa starfruit

Judul: Analisis Pemasaran Belimbing Dewa di Kecamatan Pancoran Mas Kota Depok.
Abstrak: Belimbing Dewa adalah salah satu komoditas unggulan Kota Depok. Hal tersebut didukung dengan volume produksi belimbing Kota Depok menjadi yang paling tinggi di Provinsi Jawa Barat. Penelitian ini bertujuan untuk menganalisis sistem pemasaran dan efisiensi pemasaran belimbing di Kecamatan Pancoran Mas, Kota Depok. Data-data diperoleh dari responden berjumlah 21 orang petani dan 15 orang lembaga pemasaran. Pengambilan sampel dilakukan dengan teknik purposive sampling untuk petani responden dan snowball sampling untuk lembaga pemasaran. Efisiensi pemasaran diukur dengan menggunakan indikator marjiin pemasaran, farmer’s share dan rasio keuntungan terhadap biaya. Hasil dari penelitian ini menunjukkan bahwa terdapat empat saluran pemasaran belimbing di Kecamatan Pancoran Mas yang melibatkan pedagang pengumpul, pedagang besar luar kota, pedagang pengecer lokal dan luar kota. Saluran yang relatif lebih efisien diantara yang lainnya adalah saluran tiga dengan total marjin pemasaran sebesar Rp 11 500, nilai farmer’s share sebesar 42.50 % dan nilai π/c sebesar 2.71.
Keyword: Belimbing Dewa, biaya pemasaran, efisiensi pemasaran, saluran 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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