Judul: Analisis Kepuasan dan Loyalitas Konsumen Restoran Sop Ayam Pak Min Klaten Cabang Bogor.
Abstrak: Restoran Sop Ayam Pak Min Klaten Cabang Bogor adalah salah satu restoran di Kota Bogor dengan menu makanan utama sop ayam dengan cita rasa yang khas. Tujuan dari penelitian ini adalah untuk mendeskripsikan karakteristik konsumen, proses keputusan pembelian konsumen, kepuasan konsumen, dan loyalitas konsumen. Kuesioner survei dilakukan pada bulan Agustus 2017. Metode pengambilan sampel menggunakan metode convenience sampling. Jumlah responden dalam penelitian sebanyak 100 orang. Metode yang digunakan adalah dengan menggunakan analisis deskriptif, Importance Performance Analysis (IPA), Customer Satisfaction Index (CSI), dan piramida loyalitas. Berdasarkan Indeks Kepuasan Pelanggan (CSI) Restoran Ayam Pak Min Klaten Cabang Bogor sebesar 79.13 persen dan bisa dikategorikan sangat puas. Tingkat loyalitas pelanggan Restoran Sop Ayam Pak Min Klaten Cabang Bogor berada pada tahap habitual buyer atau dapat dikatakan tingkat loyalitas konsumen yang masih rendah.
Keyword: CSI, IPA, Piramida loyalitas

Judul: Analisis Proses Pengambilan Keputusan Pembelian dan Kepuasan Konsumen RM. Sop Ayam Pak Min Klaten Cabang Bogor
Abstrak: RM. Sop Ayam Pak Min Klaten Cabang Bogor is one of restaurant which offers traditional Javanese cuisine, especially chicken soup. The objectives of this study are to identify the characteristics of consumer, to analyze the decision buying process, to analyze the customer satisfaction level based on performance attributes of the restaurant, and to formulate alternatives marketing strategy. Data were collected by questionnaire survey to 100 respondents who were selected by convenience sampling. Descriptive analysis, Importance Performance Analysis (IPA), Customer Satisfaction Index (CSI), and gap analysis were employed in this research. The result of IPA showed some attributes to be improved, i.e. cleanness of the food and food equipment, cleanness of the restaurant, availability and cleanness of toilet and sink, availability of parking lot, and the comfort of restaurant. The result of CSI analysis showed that the level of consumer satisfaction was 75.27 percent, meaning that the consumers of RM. Sop Ayam Pak Min Klaten Cabang Bogor were satisfied.
Keyword: marketing strategy, gap analysis, IPA, CSI, characteristics of consumer

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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