Judul: Pengaruh Mutu Produk dan Pelayanan Terhadap Kepuasan dan Loyalitas Konsumen di Restoran Empal Gentong H. Apud Cirebon
Abstrak: Mutu produk dan pelayanan di sebuah restoran sangat berpengaruh terhadap tingkat kepuasan dan loyalitas konsumen. Restoran Empal Gentong milik H Apud merupakan salah satu restoran yang menyajikan menu makanan khas di Cirebon yang dapat bertahan di tengah persaingan restoran sejenis yang berada di sekitar lingkungan bisnisnya. Hal tersebut menjadi alasan penelitian ini dengan tujuan untuk mengidentifikasi karakteristik konsumen Restoran Empal Gentong Haji Apud, menganalisis pengaruh mutu produk dan pelayanan terhadap kepuasan konsumen Restoran Empal Gentong Haji Apud, dan menganalisis pengaruh tingkat kepuasan terhadap loyalitas konsumen Restoran Empal Gentong Haji Apud. Penelitian ini dilakukan dengan menggunakan Structural Equation Modeling (SEM) dengan pendekatan Partial Least Squares (PLS). Hasil dari penelitian menunjukan bahwa mutu produk berpengaruh positif secara signifikan terhadap kepuasan konsumen, kualitas pelayanan berpengaruh positif secara signifikan terhadap kepuasan konsumen dan kepuasan konsumen berpengaruh positif secara signifkan terhadap loyalitas konsumen.
Keyword: Kepuasan, Kualitas Pelayanan, Loyalitas, Mutu Produk, Structural Equation Modelling (SEM)

Judul: Consumer Preferences and Purchasing Decision Making Process for Empal Gentong H. Apud Restaurant
Abstrak: Bermunculan pesaing Restoran Empal Gentong H. Apud di Kabupaten Cirebon dapat mempertahankan usahanya dengan stabilisasi omzet restoran karena restoran yang terkenal di kalangan masyarakat luas. Penelitian ini bertujuan untuk menganalisis karakteristik konsumen, atribut-atribut dan faktor-faktor preferensi konsumen, dan menganalisis proses pengambilan keputusan pembelian konsumen terhadap Restoran Empal Gentong H. Apud. Jumlah responden dalam penelitian ini sebanyak 100 orang. Metode analisis data yang digunakan yaitu analisis deskriptif, analisis konjoin, dan analisis faktor. Atribut Restoran Empal Gentong H. Apud dengan nilai kepentingan tertinggi adalah atribut harga. Faktor utama yang memengaruhi preferensi konsumen terdiri dari tiga faktor utama yang meliputi faktor kualitas dan identitas, faktor tampilan dan suasana, dan faktor perhatian. Proses pengambilan keputusan pembelian konsumen atas motivasi sedang lapar dan pertimbangan utama cita rasa makanan., The emergence of competitors of Empal Gentong H. Apud Restaurant in Cirebon Regency can maintain its business by stabilizing restaurant turnover because the restaurant is well-known to the wider community. This study aims to analyze consumer characteristics, attributes and factors of consumer preferences, and analyze the consumer purchasing decision-making process for Empal Gentong H. Apud Restaurant. The number of respondents in this study were 100 people. The data analysis methods used are descriptive analysis, conjoin analysis, and factor analysis. The attribute of Empal Gentong H. Apud Restaurant with the highest importance value is the price attribute. The main factors that influence consumer preferences consist of three main factors which include quality and identity factors, appearance and atmosphere factors, and attention factors. The consumer purchasing decision-making process is motivated by being hungry and the main consideration of food taste.
Keyword: preferensi konsumen, Keputusan pembelian, faktor, konjoin

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.
Keyword: