Judul: Comparative Analysis of Marketing Channels of Cayenne Pepper through Auction Market and Other Channels in Turi District Sleman Regency
Abstrak: Turi District is one of cayenne pepper production areas in Sleman Regency. The marketing of Cayyene Pepper is interesting to study especially after the chili auction market was established in Sleman Regency in 2018. Therefore, this study aims to compare the marketing of cayenne pepper through the auction market marketing channel with other marketing channels in Sleman Regency based on marketing margin, farmer’s share, and profit ratio to marketing cost. The data collection methods were purposive sampling method applied on farmers and snowball sampling method applied on marketing organization. The results showed that were five kinds of Cayenne Pepper marketing channels in Turi District with two marketing channels through the auction market. The channel through the auction market has a larger sales volume and facilities that make it easier for farmers, such as providing close gathering points and providing production facilities for farmers. Marketing channel through the wholesaler has a higher purchase price at the farmer level than the auction market.
Keyword: Auction Market, Cayenne pepper, Marketing Channels

Judul: Analisis Sistem Pemasaran Beras Ciherang di Kecamatan Cibeber, Kabupaten Cianjur
Abstrak: Rice is the basic commodity that became the staple food for the Indonesian. The purposes of this research were analyzing marketing channels, function, structure and marketing institutions of farmer Ciherang Variety in Cibeber Subdistrict. Beside that, the purposes of this research were analyzing the marketing efficiency by marketing margin, farmer’s share and benefit cost ratio approaching. The research was conducted in 3 villages that are Cisalak, Karangnunggal, Salamnunggal with 30 farmers as the respondents and there are 7 marketing institutions in the subdistrict. Generally, the market structure in this subdistrict is oligopsonistic . Based on the marketing function and the profitable ratio about marketing cost, the channels that through farmers-middlemen-major collector and rice mills in village-retailer-consumer rice in Jakarta is the most efficient channels. The farmer should have made farmer groups or cooperation as part of the marketing system to improve the bargaining position and easier capitalization like through the warehouse system in Cianjur.
Keyword: Rice, Marketing Margin, Farmer’ Share, Efficiency,

Judul: Formulasi Hamilton Untuk Menggambarkan Deformasi Gelombang Soliter Dengan Dasar Tidak Rata Pada Fluida Dua Lapisan
Abstrak: Gelombang internal adalah suatu gelombang yang muncul di bawah permukaan laut sehingga gelombang ini tidak teramati secara kasat mata. Formulasi Hamilton dirumuskan untuk menjelaskan gerak gelombang ini. Dalam hal ini diasumsikan bahwa fluida yang ditinjau terdiri atas dua lapisan dengan masing-masing lapisan memiliki rapat massa yang konstan. Selain itu, diasumsikan pula fluida yang ditinjau berupa fluida tak mampat (incompressible) dan tak kental (invicid). Formulasi Hamilton dilakukan dengan meninjau fluida dua lapisan yang berada pada domain yang dibatasi oleh batas atas yang rata dan batas bawah yang tidak rata. Hamilton (energi total)-nya didefinisikan sebagai penjumlahan antara energi kinetik dan energi potensialnya. Karena energi kinetik tidak secara eksplisit dinyatakan dalam peubah fisis, maka digunakan metode asimtotik untuk menentukan energi totalnya. Dalam hal ini diasumsikan bahwa gelombang interfacial yang ditinjau cukup panjang, dan amplitudo yang cukup kecil. Persamaan Korteweg de- Vries (KdV) diperoleh, jika disumsikan bahwa gelombang interfacial hanya merambat pada satu arah, sedangkan jika gelombang tersebut merambat ke dua arah, diperoleh persamaan Boussinesq.
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