Judul: Pengembangan Sistem Pakar Agribisnis Cabai (Capsicum annuum. L) Berbasis Android
Abstrak: The objective of the research was to develop a consultation system for Chili Pepper (Capsicum annuum. L) agribusiness based on android. The method included problem identification, the search knowledge sources, knowledge acquisition, knowledge representation and consultation system development based on android. Knowledge from the expert and other’s materials has been captured and represented to develop the system. The system development was done by using extreme programming (XP) which included the stages of analysis, design and implementation. The results of this research is a chili pepper agribusiness expert system based on android which consists of nine consultation modules like choosing the best cultivar, fertilizing recommendation, land preparation, identified disease, controlling insect pest, farmers income and profit gain, after harvest’s technique, government policy, and price information based on user’s location. The system was running well on the android phone. Users can download the application from http://apps.cs.ipb.ac.id or http://appsriset.ipb.ac.id as a mirror link, then install it on their smartphone or computer tablet .
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Judul: Pengembangan Sistem Pakar Agribisnis Cabai (Capsicum annuum. L) Berbasis Android
Abstrak: Penelitian yang berkaitan dengan teknik penyebarluasan informasi pertanian khususnya agribisnis cabai dilakukan oleh Supriyanto (2011), yaitu Sistem Konsultasi Online Agribisnis cabai (Capsicum annuum L.). Sistem konsultasi tersebut merupakan sistem konsultasi yang berbasis web dan membahas mengenai analisis kebutuhan materi konsultasi sampai dengan perancangan sistem konsultasi secara online. Erlan (2011) juga melakukan penelitian dengan topik yang sama, hanya saja sistem yang dibangun berbasis wap yang diperuntukkan bagi pengguna mobile phone (ponsel). Akses terhadap sistem konsultasi berbasis web dan wap memerlukan koneksi jaringan/ internet. Kebutuhan akan internet berarti kebutuhan akan biaya akses internet. Penelitian ini dilaksanakan untuk meminimalisasikan penggunaan internet dalam pengaksesan konten informasi yang dibutuhkan sehingga bisa mengurangi biaya. Pengembangan sistem pakar ini dilakukan dengan teknologi mobile yang saat ini perkembangannya sangat pesat yaitu android. Modul dan basis data pada aplikasi berbasis Android ini akan diintegrasikan menjadi sebuah kesatuan aplikasi android siap pakai. Calon pengguna aplikasi bisa menginstal sistem ini ke dalam perangkat android kemudian menggunakannya. Koneksi melalui jaringan internet hanya diperlukan ketika pengguna melakukan pengunduhan aplikasi ataupun melakukan proses update sistem. Pada penelitian ini juga dilakukan penambahan fungsi-fungsi yang akan memaksimalkan akses terhadap informasi misalnya akses data real time berbasis lokasi pengguna perangkat Android...dst
Keyword: android, application framework, versi android, extreme programming (XP)

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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