Judul: Analisis Keputusan Konsumen serta Implikasi terhadap Bauran Pemasaran Restoran DBC & Spageti, Kota Bogor
Abstrak: DBC & Spageti restaurant is a restaurant that serves a variety of menubased chocolate and spaghetti. The purpose of this research is to analyze the purchase decision prosess of consumers, the factors which can influence consumer purchasing decisions, the importance satisfaction level for performance attributes that will provide an alternative strategy attributes repairment in DBC & Spageti restaurant. The method of research is a descriptive analysis method, Customer Satisfaction Index (CSI), and Importance Performance Analysis (IPA).In the purchasing decision (nature of the visit depends on the situation, frequency of purchase only once a month, the visit does not necessarily, time to visit at afternoon, and the costs which is spend for eating from 50 000 until 100 000), and post-purchase decision are consumers satisfied and consumers have an interest to come back again. The results are the consumer satisfaction rate at DBC & Spageti restaurant is satisfied and can be seen from Costumer Satisfaction Index which is at 77.07 percent that will mean the consumers are satisfied.
Keyword: satisfaction, purchase decision prosess, DBC & Spageti restaurant, Bogor Agricultural University (IPB)

Judul: Tingkat Kepuasan Dan Loyalitas Konsumen Restoran Dbc Coklat & Spageti, Bogor
Abstrak: Gaya hidup dengan aktivitas yang padat membuat seseorang lebih memilih untuk makan di restoran ketimbang di rumah. Terlebih lagi, makan di luar rumah juga dilakukan masyarakat untuk memenuhi kebutuhan sosialnya. Restoran DBC Coklat dan Spageti menawarkan produk dan jasa untuk memenuhi kebutuhan tersebut. Selain makanan dan minuman, restoran ini juga menawarkan nuansa Gothic kepada konsumennya,namun beberapa tahun terakhir omset yang didapatkan oleh restoran ini masih berfluktuatif dan seringkali belum mencapai target omset restoran. Penelitian ini bertujuan menganalisis kepuasan dan loyalitas konsumen Restoran DBC Coklat & Spageti. Metode pengambilan sampel menggunakan metode convenience sampling dengan jumlah sampel 100 responden. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif, Importance Performance Analysis (IPA), Costumer Satisfaction Index (CSI), dan piramida loyalitas konsumen. Tingkat kepuasan konsumen berada pada kriteria puas (65,46%). Nuansa gothic yang ditawarkan telah menciptakan kepuasan konsumen, ditunjukan pada atribut mengenai keunikan restoran yaitu dekorasi ruangan dan tampilan penyajian makanan telah memenuhi harapan konsumen. Tingkat loyaltias konsumen Restoran DBC Coklat & Spageti mayoritas berada pada tingkat Switcher buyer (43%).
Keyword: indeks, kriteria, nuansa gothic

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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