Judul: Aplikasi Online Analytical Processing (OLAP) Berbasis Web Data Warehouse Tanaman Hortikultura Menggunakan SpagoBI
Abstrak: Data tanaman hortikultura yang dimiliki oleh Kementerian Pertanian selalu bertambah setiap tahun. Data tersebut mencakup aspek komoditas, lokasi, status angka dan waktu yang masih tersaji dalam bentuk tabel. Hal ini menyebabkan ringkasan data susah untuk diperoleh. Aplikasi Online Analycal Processing (OLAP) yang terintegrasi dengan data warehouse dapat menjadi solusi persoalan ini. Penelitian ini mengolah data tanaman hortikultura yang meliputi buah-buahan, sayuran, tanaman hias, dan tanaman obat di seluruh Indonesia mulai tahun 2000 sampai 2013. Skema star yang dipakai membentuk kubus data dengan satu tabel fakta dan 4 dimensi. OLAP SpagoBI dipilih karena sebagai aplikasi open source, SpagoBI memiliki fitur yang lengkap dan juga user friendly. Sistem yang terbangun mampu menampilkan ringkasan data tanaman hortikultura dalam bentuk crosstab dan grafik.
Keyword: data warehouse, OLAP, SpagoBI, tanaman hortikultura

Judul: Online Analytical Processing (OLAP) Berbasis Web untuk Tanaman Hortikultura Menggunakan Palo
Abstrak: Ministry of Agriculture (Ministry of Agriculture) is one institution that examines and provides data horticultural crops in Indonesia. Data presentation horticultural crops in the Ministry of Agriculture's website is still in the form of a table. This resulted in a summary of the data is not easy diperoleh.Oleh horticultural crops, therefore, we need a system that can incorporate a variety of data horticultural crops. Systems that can meet these needs is a system Online Analytical Processing (OLAP) that is integrated with a database. Data horticultural crops involved is data horticultural crops throughout Indonesia from 2000 to 2013. Tanaman horticulture include vegetables, fruits, medicinal plants, and ornamental plants. OLAP systems can represent data of horticultural crops in the crosstab and chart form.
Keyword: Bogor Agricultural University (IPB), OLAP, horticultural data, database

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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