Judul: Analisis Proses Pengambilan Keputusan Pembelian dan Kepuasan Konsumen Terhadap Restoran Etnik Khas Indonesia Di Jakarta (Studi Kasus : Restoran Sate Khas Senayan Cabang Salemba)
Abstrak: Costumer Satisfaction and purchase decision process is one of concern on restaurant business in maintaining and even improving the costumer by looking at the characteristics and performance as well as the interest rate on a typical on Sate Khas Senayan Restaurant, DKI Jakarta. This research objectives are identify the common characteristics of customers, analyze the determinant customers purchasing decisions and analyze the level of customer satisfaction the performance on some important attribute of Sate Khas Senayan Restaurant branch Salemba, DKI Jakarta.This research use several method such as Descriptive Analysis, Importance Performance Analysis (IPA) and Costumer Satisfaction Index (CSI). IPA analysis results obtained that the 16 attributes Sate Khas Senayan Restaurant branch Salemba, DKI Jakarta considered important by customers of Sate Khas Senayan Restaurant branch Salemba, DKI Jakarta and 72.22% of the printing attributes has a good performance. Calculation results show that CSI of Sate Khas Senayan Restaurant branch Salemba, DKI Jakarta has a customer satisfaction index by 80.04% are very satisfied in the CSI criteria.
Keyword: puschase decision process., Costumer Satisfaction

Judul: Analisis Kepuasan Konsumen dan Proses Keputusan Pembelian pada Rumah Makan Mang Kabayan Pusat, Cibubur, Depok
Abstrak: As the presence of modernization, trend, and lifestyle which actually focuss on how to spend the weekend to fulfill their daily needs and desires, in one way they do eating out with family, friends, also with business relation. In addition, business of restaurant have strong competition, one of it includes Mang Kabayan. Mang Kabayan is one of sundanese restaurant which located in Cibubur. The purposes of this research are to identified the characteristics of customer to know the steps of purchasing process and the factors which affecting the purchasing decision, and to analysis the level of customer satisfaction, and to consider the implications of marketing mix strategy. Descriptive analysis to know characteristics of customers and purchasing decision process show that cutomers come from different background. Customer Satisfaction Index for determine the level of customer satisfaction. Results indicate that CSI about 81.02 percent shows consumers are very satisfied with Mang Kabayan restaurant’s performance. Importance Performance Analysis measure the level of important and the level performance of attributes which shows result that must be corrected are hospitality and courtesy of the waiter and waitress, also the speed of food preparation. The implications of 7P marketing mix strategy related with the attributes to be corrected are the strategy of people and process which recommended to reach the customer satisfaction in order customer could be loyal to Mang Kabayan Restaurant.
Keyword: restaurant, consumer behavior, index performance analysis, customer satisfaction index

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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