Judul: Analisis Sumberdaya dan Konsumsi Daging Sapi di Indonesia Tahun 2005-2010
Abstrak: Indonesian beef resources problem is the high demand of import rate which is interfere with the independence and potential in food trap exporting countries (DITJENAK 2010). The Indonesian beef consumtion problem is the low consumption of beef between other ASEAN countries. The objective of the study is to analyzed the resources and the consumption of beef in Indonesian from 2005-2010. A descriptive design was implemented and a set of scondary data was used in the study. Data was analyzed using Microsoft Excell 2007 for Windows. The result showed that the production (including offal) national has rose from positive percentage rate (2,91%). The average percentage of total production amounted to 77,59 percent, and imports amounting to 22,41 percent. The availability of beef has rose from positive percentage rate (6,04%). The average availability of beef is 1,69 kg/cap/yr or 286,63 thousand tons/yr. Amount of the consumption of levels tended to increase (2,83%). The beef consumption in 2010 is 1,56 kg/kap/th. The average of national beef consumption reach 1,47 kg/cap/yr. The type of largest consumption is food made from beef (soto/gule/sop/rawon, sate/tongseng, mie bakso, and daging goreng) reach 0,93 kg/cap/yr. The lowest consumption is offal reach 0,02 kg/cap/yr. Ideal consumption of beef is 2,46 kg/cap/yr. Actual consumption of beef is still less than ideal. The difference is -1 kg/cap /yr. The average sufficiency availability with respect to imports (on trend) of beef from 2005 to 2010 to meet the actual consumption of beef population of Indonesia. The average sufficiency availability without regard import (absolute) of beef has not been able to meet the actual consumption of the population of Indonesia. The sufficiency availability on trend and absolute of beef are not able to meet the ideal consumption of the population in Indonesia.
Keyword: 

Judul: Analysis of  the  factors that affect  the  price  of  beef in Indonesia
Abstrak: Dalam rangka mewujudkan kecukupan daging sapi di dalam negeri maka pemerintah Indonesia mencanangkan program swasembada daging sapi. Konsep swasembada tersebut tidak hanya menyangkut ketersediaan tetapi juga akses masyarakat terhadap pangan itu sendiri. Akses masyarakat terhadap daging sapi dapat dilihat dari harga komoditas tersebut. Harga daging sapi di Indonesia relatif lebih tinggi dibandingkan dengan negara lainnya. Hal ini menyebabkan daya beli masyarakat terhadap daging sapi menjadi rendah. Disamping itu, kondisi harga yang tinggi kenyataannya juga tidak dapat menjadi insentif bagi peternak untuk meningkatkan produksi daging sapi. Mengingat permasalahan tersebut, harga daging sapi menjadi hal penting untuk dikaji lebih lanjut sehingga perlu dianalisis faktor-faktor yang mempengaruhi harga daging sapi di Indonesia. Data yang digunakan adalah data time series tahun 2008-2013. Analisis deskriptif dan model persamaan regresi linear berganda digunakan sebagai alat analisis dalam penelitian ini. Hasilnya berdasarkan analisis deskriptif harga daging sapi di Indonesia dipengaruhi oleh jalur distribusi yang panjang sedangkan berdasarkan model persamaan regeresi linear berganda terdapat tiga variabel yang berpengaruh yaitu harga daging sapi periode sebelumnya, hari raya lebaran (Idul Fitri) dan impor daging sapi., To reduce dependence on beef import, Indonesian government declared an increase of beef production by Self Sufficiency Program 2014. The meaning of self sufficiency in this case is not only about its availability but also public access to food itself. Public access to the beef can be seen from its price. The price of beef in Indonesia is relatively high compared to other countries. This condition caused public purchasing power on beef to be low. In addition, the high price could not be an incentive for breeders to increase beef production. Based on this problem, this research aim to analyze the factors that affect the price of beef in Indonesia. This research used time series data form in period 2008 to 2013. As a result, based on descriptive analysis the price of beef in Indonesia is affected by its distribution chain. On the other side, based on multiple linear regression model there are three variables that affect the price of beef in Indonesia such as the price of beef earlier periode, Eid celebration, and volume of beef import.
Keyword: daging sapi, harga, swasembada

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: