Judul: Analisis Faktor-faktor yang Memengaruhi Permintaan Daging Sapi dan Implikasinya terhadap Kebijakan Impor
Abstrak: Chaotic imported beef in November 2012, resulting in a rise in the price of beef in the market so that the need for special handling so that beef prices. This research was conducted to analyze the factors that affect the demand for beef in Indonesia and the role of substitution, and the implications of policy import. This study uses secondary data the period 1982-2011. Analyses were performed with the econometric approach, estimation models using Principal Component Regression (RKU). The results show the coefficient of determination (R2) of 71.7 percent, and the elasticity of each of the variables tested small relative to the demand for beef show that beef consumption is not replaceable. Beef demand continues to increase every year even though the price of beef is relatively expensive. Formulations stabilization policy covering the prices of additional supplies at the time of the great religious, imports done merely to meet national shortage of supplies beef and ensure the availability of food -substitutions beef as the availability of chicken meat and eggs, and increases the production of beef in the long run.
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Judul: Analisis permintaan daging sapi di Indonesia
Abstrak: The observation has purpose (1)To analize the influence of the price meat import meat (2) To analize the influence of riel value (3) To analize the influence of offering domestic meat (4) To Analize the influence of consumption domestic meat (5) To analize the influence of income. The obervation held first month of June untill last month of June 2008 the data which used secondary from Badan Pusat Statistik. The observation analized by quantitatif description to describe variable offering meat import and qualitatif by Cobb Douglas model which linier double log transformation which used Microsoft Excel and software Eviews 4.1. The result of this observation are (1) the amount of R2 Value is 96,43% it's mean the variation of variable can be explained like liniear by the variable free. (2) On test F shown 0,00001 which has value more litle than rate of real which used is a=5% it means the value shown that the similarity significant enough to explain the variable which used. (3) the amount elastisity shown degree of feeling variable dependent on similarity to changing of variable independent (4) In test of econometrics the similarity have not problem auto corelation heteroskedastisity and multikolinieritas (5) The variables which have negative influence to meat import requirement is value riel changing the price of meat import, and meat domestic offering (6) The variables which have positive influence to meat cow import is meat consumption and income per capity of people
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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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