Judul: Analisis faktor-faktor yang mempengaruhi pengambilan keputusan mahasiswa dalam memilih institut pertanian bogor
Abstrak: Institut Pertanian Bogor merupakan salah satu Universitas terbaik di Indonesia dan menjadi pilihan banyak orang yang ingin melanjutkan pendidikan ke perguruan tinggi. Penelitian ini bertujuan untuk : 1) Mengidentifikasi karakteristik mahasiswa IPB, 2) Menganalisis proses pengambilan keputusan mahasiswa IPB, 3) Mengidentifikasi faktor-faktor yang mempengaruhi pengambilan keputusan mahasiswa memilih IPB, dan 4) Menganalisis sikap mahasiswa terhadap atribut yang dimiliki IPB. Metode pengumpulan data dengan menggunakan kuisioner, jumlah responden penelitian sebanyak 100 orang dengan metode penarikan sampel yaitu quota sampling. Pengolahan data menggunakan analisis deskriptif, analisis faktor dan analisis multiatribut fishbein. Berdasarkan hasil analisis faktor, terdapat 3 faktor yang mempengaruhi proses pengambilan keputusan mahasiswa dalam memilih IPB yaitu faktor psiko demografis, faktor perubahan individu dan faktor lingkungan dan hasil multiatribut fishbein menujukan sikap mahasiswa terhadap IPB masuk dalam kategori Cukup baik.
Keyword: decision making process, factor analysis, multiatribut Fishbein

Judul: Faktor yang Mempengaruhi Keputusan Mahasiswa IPB Angkatan 2012/2013 Memilih IPB Sebagai Tempat Melanjutkan Pendidikan Tinggi
Abstrak: The large number of universities in Indonesia make students have to decide which one they would choose as their higher education. Bogor Agricultural University is one of the state universities in Indonesia. The purpose of this study is to obtain the factors that influence the decision of IPB students, generation of 2012/2013, in choosing IPB as a place to continue their higher education. Data collection was performed by the method of random sampling strata. In preliminary survey result, it was found 32 reason statements of IPB students, generation of 2012/2013, in choosing IPB as a place to pursue their higher education. The data obtained were then processed using factor analysis, and the results of this processing were used to classify the 32 reason statements into 10 factors with a cumulative variability percentage that can be explained in the amount of 71.265%. These factors are namely IPB factor as agricultural-based university and the ideals of the prospective students, IPB factor as qualified university and its good future promise, cost factor and IPB student characteristics, promotion factor and IPB campus environmental factor, native school environmental factor, IPB factor as a proud state university, knowledge factor of the university, students family environmental factor, major subject desired factor and IPB location, and IPB factor as the top choice university.
Keyword: factor analysis, stratified random sampling

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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