Judul: Analisis Perspesi Nilai, Kepedulian Keamanan Pangan dan Kesadaran Kesehatan yang Memengaruhi Keinginan Membeli Pangan Organik (Studi Kasus Mahasiswa S1 IPB)
Abstrak: Memasuki abad 21, kecendrungan gaya hidup sehat di kalangan masyarakat modern semakin meningkat dengan mengkonsumsi pangan organik. Pangan organik adalah pangan yang diproduksi tanpa pupuk kimia atau pestisida. Tujuan penelitian adalah menganalisis pengaruh kesadaran kesehatan, persepsi nilai dan kepeduliaan keamanan pangan terhadap keinginan membeli pangan organik. Penelitian dilakukan terhadap sivitas IPB strata 1 dan teknik pengambilan contoh dengan Teknik Slovin dan Kuota. Metode analisis yang digunakan adalah regresi linear berganda dengan Statistical Program for Social Science (SPSS for windows versi 16.0). Hasil penelitian menunjukan secara parsial terdapat pengaruh positif persepsi nilai tentang pangan organik dan kesadaran kesehatan terhadap keinginan membeli produk pangan organik, di samping pengaruh negatif kepedulian keamanan pangan dengan keinginan membeli pangan organik. Secara simultan, terdapat pengaruh positif persepsi nilai tentang pangan organik, kepedulian pada keamanan pangan dan kesadaran kesehatan terhadap keinginan membeli pangan organik.
Keyword: perceived value, food safety concern, health consciousness, organic food, purchase intention

Judul: Analisis Faktor-Faktor yang Mempengaruhi Resistensi Pembelian Pangan Organik dan Proses Market Education
Abstrak: Indonesian market share at organic food only 0.5-2 percent from all agricultural products. There are problems in organic food marketing in Indonesia such as consumer confidence and limited information about organics food. This research aimed to analyze correlation of gender, occupation, age and education in intention to purchase organic foods, identify factors influencing purchase resistance of organic foods, and the market education process. This research was carried out at IPB Dramaga and involved 150 respondents. Data was collected using questionnaire survey. The result showed that gender, job, age and education not correlate with purchase intention of organic foods. Result from Structural Equation Modeling (SEM) showed that factors caused purchase resistance was negative attitude toward organic foods, unaffordability of organic foods, and lack of awareness in organic foods but subjective norm don’t have significant correlation with purchase intention. Market education process that can do is educated about health benefits of organic food, organics certification and economics value.
Keyword: SEM, organic foods, market education, consumer behavior

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: