Judul: Analisis Kepuasan Petani Tebu Mitra terhadap Kemitraan dengan Pabrik Gula (studi kasus : PG Trangkil, PG Rendeng, dan PG Gendhis Multi Manis)
Abstrak: Kemitraan merupakan salah satu upaya kerjasama yang dilakukan oleh kelompok, individu formal atau non formal untuk menjalankan bisnis dan saling memerlukan satu sama lain, salah satu kemitraan yang terjadi adalah antara petani tebu dengan pabrik gula. Tujuan dari penelitian ini adalah untuk mengidentifikasi, menganalisis dan membandingkan tingkat kepuasan petani tebu mitra di tiga pabrik yang berbeda. Metode yang digunakan dalam penelitian ini adalah analisis deksriptif, CSI dan IPA. Berdasarkan penelitian, analisis CSI menunjukkan bahwa kepuasan petani tebu mitra Pabrik Gula Trangkil adalah sebesar 72.10 persen yang artinya petani ‘puas’, kepuasan petani Tebu Mitra Pabrik Gula Rendeng sebesar 54.56 persen yang artinya petani ‘cukup puas’ dan kepuasan petani tebu mitra Pabrik Gula GMM (Gendhis Multi Manis) sebesar 63.05 persen yang artinya petani ‘puas’, sedangkan berdasarkan analisis IPA masing-masing pabrik memiliki prioritas perbaikan utama yang berbeda-beda.
Keyword: CSI, IPA, kemitraan, pabrik gula

Judul: Analisis Kepuasan Petani Tebu Mitra Terhadap kemitraan Dengan PG Pakis Baru
Abstrak: The raw material is a crucial need for survival. PG Pakis Baru is one of the companies that use sugar cane as raw material. Limitations in the fulfillment of the PG Pakis Baru cane encourage PG to establish cooperation with farmers. The cooperation form a partnership with the pattern of the plasma core. The reason farmers cooperative partnership is to assist in the capitalization of farming, cultivation, and it produces sugarcane marketing collateral. Partner satisfaction levels sugarcane farmers against partnership with the PG Pakis Baru measured using analysis Customer Satisfaction Index (CSI) shows the results of 94.5 percent. Results of these calculations indicate that sugarcane farmers are very satisfied partners over partnerships with PG DI leaders Pakis Baru.
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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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