Judul: Evaluasi Repositori Institusi Badan Litbang Pertanian Menggunakan Trustworthy Repositories Audit and Certification (TRAC).
Abstrak: Repositori institusi memerlukan proses evaluasi untuk memastikan kepercayaan dan keberlanjutan akses ke pengguna. Penelitian ini merupakan penelitian evaluatif dengan pendekatan kualitatif, penelitian ini bertujuan untuk mengevaluasi repositori institusi Badan Litbang Pertanian dengan menggunakan Trustworthy Repository Audit and Certification (TRAC). Berdasarkan data yang diperoleh dari halaman web digilib.Litbang.pertanian.go.id/repositori/, unit analisis dalam penelitian ini adalah repositori institusi Badan Litbang Pertanian yang merupakan basis data publikasi pertanian. Teknik pengambilan sampel dengan mempertimbangkan informan sebagai pembuat kebijakan dan keputusan dalam sistem repositori institusi Badan Litbang Pertanian.Teknik pengumpulan data dilakukan dengan observasi, studi pustaka dan wawancara. Wawancara yang dilakukan adalah wawancara semi-terstruktur yang dilakukan secara mendalam (wawancara mendalam). Pengolahan dan analisis data dilakukan dengan menggunakan teori Miles dan Huberman, yaitu dengan mengurangi data, fokus pada tema penelitian, penyajian data dan penjelasan berdasarkan observasi, wawancara dan dokumentasi dan menyimpulkan analisis. Hasil penelitian ini menunjukkan bahwa Badan Litbang Pertanian belum mengevaluasi repositori istitusinya. Relevansi terhadap evaluasi sistem dan organisasi repositori institusi dapat menjamin aspek organisasi dan kebijakan, keberlanjutan pendanaan, kebijakan akses, manajemen objek digital, serta infrastruktur teknis dan faktor keamanan, sehingga berdampak dapat dipercaya pada akses pengguna ke repositori lembaga.
Keyword: Repositori Institusi, Repositori Badan Litbang Pertanian, TRAC

Judul: Evaluasi Tata Kelola TI pada Perpustakaan Badan Litbang Pertanian Menggunakan Kerangka Kerja COBIT
Abstrak: The purpose of this research is to perform measurements toward the IT utilisation in the libraries management using the COBIT framework. This research conducted an evaluation the IT utilisation by the Indonesian Agency for Agricultural Research in library management. Evaluation restricted to the control process with the priority scale obtained by using the method of AHP. The control process is managing quality, enable operation and use, manage the physical environment, and provide IT governance. From the results of the evaluation is known that the current maturity level is level 3 (defined), while the level of maturity expected the institution is level 4 (managed and measurable). Gap on maturity level can be grave implications for the overall management of the library. Corrective measures that can be done is as follows: 1. Library management conducted by professional, semi-professional personnel, and non-professional library staff, 2. The library personnel just do the work in accordance with the main task, 3. Library manager is obliged to report its activities to the head of the UK/UPT-related and PUSTAKA.
Keyword: 

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.
Keyword: