Judul: Faktor-faktor yang Memengaruhi Konsumsi Rokok Kretek : Studi Kasus di Kecamatan Bogor Barat
Abstrak: Indonesia has 33 provinces which are scattered over its area. West Java is the second highest province in term of prevalence of smoking habit for age groups 10 and above. Among counties and cities in West Java, Bogor is a city with largest number of cigarette consumer in West Java in term of prevalence of smoking habit for age groups 10 and above. The purposes of this study are to analyze: 1) Characteristic of cigarette comsumers that are live in West Bogor Subdistrict; 2) Factors that influence consumption of cigarettes in West Bogor Subdistrict. This study uses primary and secondary data. Poisson regression analysis is applied in this study as method of analysis. The results of this study indicate that: 1) characteristics of respondents are senior high school graduate, married, trader, 27 to 38 years old. They have monthly income more than Rp3 500 000. The price of clove cigarette consumed is about Rp900 to Rp1 075. The price of subtitute cigarette is about Rp761 to Rp1 020. The price of complementary good purchased by respondents is about Rp2 600 to Rp5 000; 2) Factors that influence consumption of clove cigarette in Bogor are price of clove cigarette, price of subtitute cigarette, price of complementary good, age, and education level.
Keyword: Bogor Agricultural University (IPB), consumption of clove cigarette, characteristics of smoker, poisson regression analysis

Judul: Preferensi konsumen rokok kretek dan rokok non kretek di Kota Bogor
Abstrak: ndustri rokok adalah contoh industri manufaktur yang mampu menyerap tenaga kerja dalam jumlah besar, mendorong berkembangnya industri lain (industri jasa) serta mendorong tumbuhnya sub sektor perkebunan dan sektor perdagangan. Selain itu, industri rokok juga secara signifikan terbukti mampu memberikan kontribusi pada penerimaan Pemerintah. Rokok kretek merupakan rokok lokal Indonesia dan merupakan pemimpin pasar, baik ditingkat nasional maupun di Kola Bogor. Dewasa ini, rokok kretek tengah dihadapkan pada dua permasalahan, yaitu kadar nikotin yang tinggi dan prestise yang kurang. Demikian juga dengan jenis rokok non kretek. Merek­merek rokok jenis ini relatif kurang dikenal di mata konsumen rokok nasional. Dengan demikian, perlu dilakukan analisis terhadap sisi preferensi konsumen rokok. Hasil analisis tersebut diharapkan dapat menjadi masukan bagi produsen rokok dalam memperbaiki kinerja produk serta program pemasaranya. Penelitian ini bertujuan untuk mengetahui sebab-sebab rokok kretek tetap mampu menjadi pemimpin pasar, menganalisis variabel demografi sampel konsumen rokok di Kola Bogor, menganalisis korelasi antara atribut-atribut rokok dengan pilihan sampel konsumen terhadap rokok dan menganalisis faktor-faktor yang mempengaruhi sampel konsumen rokok di Kola Bogor dalam memilih jenis rokok.
Keyword: industri rokok, rokok non kretek.

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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