Judul: Analisis Preferensi Konsumen Terhadap Atribut Sayuran Organik di Kota Bogor
Abstrak: Organic vegetables are now widely available in the markets; it has brought a tight inter-brand competition in the market. The increased competition will lead the organic vegetable producer to understand their costumers’ interest in buying organic vegetables offered. This study aims to identify the characteristics of the consumer and the buying decision process using descriptive analysis, and analyze attributes preferences in the organic vegetables as well as combinations of attributes that are most preferred by consumers using conjoint analysis. The attributes that will be examined includes; price, packaging, labeling, and diversity/variety of organic vegetables. The data used are primary data obtained from questionnaires to 100 respondents, analyzed using descriptive and analytical tools with the conjoint analysis software SPSS for windows. The results showed that the organic label is the most important attribute in organic vegetable products. While the combination most preferred by consumers is price 15% lower than the average price of non-organic vegetables, plastic box packaging, has an organic label, and has a lot of diversity/variety of organic vegetables.
Keyword: Consumer Preferences, Organic, Conjoint, Attributes

Judul: Analisis Perbandingan Sikap Dan Minat Konsumen Dalam Membeli Sayuran Anorganik Dan Organik Di Kota Bogor
Abstrak: Pengembangan sayuran organik di Bogor masih mengalami kendala. Salah satunya adalah kegagalan dalam menjaga kepercayaan pasar. Kegagalan tersebut tercermin dari perilaku konsumen yang enggan membeli produk. Hal ini menunjukkan kepercayaan masyarakat mengenai atribut dan manfaat produk organik (sayuran organik) yang belum mampu memenuhi kebutuhannya dan menciptakan kepuasan di benak konsumen. Penelitian ini bertujuan untuk 1) Mengidentifikasi persepsi konsumen terhadap sayuran anorganik dan organik, 2) Menganalisis pengaruh bauran pemasaran, sikap konsumen, dan minat konsumen terhadap keputusan pembelian sayuran anorganik dan organik, 3) Merumuskan strategi pemasaran sayuran anorganik dan organik. Penelitian ini dilakukan pada bulan Februari-April 2016 di enam kecamatan Kota Bogor. Jumlah responden sebanyak 100 orang dipilih secara purposive sampling dengan kriteria bahwa responden telah melakukan pembelian dan mengkonsumsi sayuran anorganik dan organik. Penelitian ini menggunakan data primer yang didapatkan melalui wawancara dengan menggunakan instrumen kuesioner berskala likert. Data sekunder didapatkan melalui kajian pustaka dari berbagai sumber yang relevan. Analisis data menggunakan analisis deskriptif, uji beda dan Structural Equation Modelling. Hasil penelitian menunjukkan bahwa ada perbedaan antara responden yang memilih sayuran anorganik dan organik. Analisis terhadap bauran pemasaran, sikap konsumen, minat konsumen, secara langsung berpengaruh positif dan signifikan terhadap keputusan pembelian. Namun ada tiga yang tidak berpengaruh dan signifikan antar variabelnya, yaitu hubungan antara minat konsumen sikap konsumen, dan bauran pemasaran.
Keyword: Bauran pemasaran, keputusan pembelian, minat konsumen, sayuran anorganik dan organik, sikap konsumen

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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