Judul: Pengetahuan, persepsi, sikap, dan perilaku membaca label informasi gizi pada mahasiswa
Abstrak: Label informasi gizi merupakan label yang memuat informasi mengenai kandungan gizi di dalam produk pangan yang menjadi media sangat penting untuk mentransfer informasi mengenai karakteristik dari suatu produk pangan. Tujuan penelitian ini adalah untuk menganalisis pengaruh karakteristik individu, karakteristik keluarga, pengetahuan, persepsi, dan sikap terhadap perilaku membaca label informasi gizi produk pangan pada mahasiswa Strata Satu (S1) Institut Pertanian Bogor. Disain penelitian ini menggunakan cross sectional study dengan metode survei yang dilakukan di Kampus Institut Pertanian Bogor (IPB), Kecamatan Dramaga, Kabupaten Bogor. Penelitian ini melibatkan 400 mahasiswa IPB yang dipilih dengan menggunakan teknik multistage random sampling dengan lapis jenis kelamin. Terdapat perbedaan nyata antara responden laki-laki dan perempuan dalam hal pengetahuan, sedangkan persepsi, sikap, dan perilaku membaca label informasi gizi tidak berbeda nyata. Sikap berpengaruh nyata terhadap perilaku membaca label informasi gizi., Nutrition labels is a label that contains information about nutrition in a food product which become very important media to transferring information about characteristic in a food product. The aim of this research was to analyze the effect of individuals characteristics, family’s characteristics, knowledge, perception, and attitude on reading behavior of nutrition labels of undergraduate students of Bogor Agricultural University. The design of this research used cross sectional study with survey method which conducted in Bogor Agricultural University, Dramaga district, Bogor regency. This research involved 400 Bogor Agricultural University’s students selected by multistage random sampling based on gender. There was significant difference between male and female for knowledge, meanwhile the difference was not appear significant for perception, attitude, and reading behavior of nutrition labels. Attitude influenced on reading behavior of nutrition labels.
Keyword: label informasi gizi, pengetahuan, persepsi, perilaku membaca label, sikap

Judul: Pengetahuan, nilai religiusitas, sikap, dan perilaku membaca label halal pada mahasiswa
Abstrak: Label halal merupakan label pada makanan yang dibenarkan menurut syariat Islam, bermutu, dan tidak membahayakan kesehatan. Penelitian ini bertujuan menganalisis pengaruh karakteristik individu, karakteristik keluarga responden, pengetahuan, nilai, dan sikap terhadap perilaku membaca label halal produk pangan pada mahasiswa Strata Satu (S-1) Institut Pertanian Bogor. Disain penelitian ini adalah cross sectional study dengan metode survei. Penelitian ini melibatkan 400 mahasiswa IPB yang dipilih menggunakan teknik multistage random sampling dengan lapis jenis kelamin. Terdapat perbedaan nyata antara laki-laki dan perempuan pada variabel pengetahuan, nilai, dan sikap dalam membaca label halal, sedangkan perilaku membaca label tidak berbeda nyata. Usia berpengaruh negatif nyata terhadap perilaku. Agama dan sikap berpengaruh positif nyata terhadap perilaku membaca label halal produk pangan., Halal label is a label on food that justified accoording to Moeslim’s syari’ah, qualified and does not harm our health. The purspose of this research was to analyzed the effect of individual characteristics, family characteristics, knowledge, value and the attitude towards behavior of reading the halal label on food products of undergraduate students of Bogor Agricultural University. This study used cross sectional study with survey method. The research involved 400 students of Bogor Agricultural University that were chosen by multistage random sampling with gender as a layer. There was significant differences between female and male in knowledge, religiosity, and attitude in reading halal label, whereas the behavior in reading label had no significant difference. Age, religion and attitude were found affected behavior of reading halal label on food products.
Keyword: label halal, nilai, pengetahuan, perilaku membaca label, sikap

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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