Judul: Potensi Pengembangan Usaha Pembiakkan Kambing PE di Desa Jarak Kecamatan Wonosalam Kabupaten Jombang Jawa Timur
Abstrak: The objectives of this research was to predict development of EG goat population as potential breeding business in Jarak Village Wonosalam Region. This research was conducted on July 2 - 8 and November 8 – 25 2013 used primary and secondary data. Primary was collected using sampling randomly method, interviewed the farmers and filled questionnaire from 110 farmers in Jarak Village. Secondary data was obtained from RPJMP Jarak Village in 2011 till 2015. This research used descriptive analysis and prediction of population development analysis. Based on the result, EG Goats in Jarak Village had average score for litter size about 1.83 with female and male ratio was 50.97% and 49.03%. By prediction of population development analysis from 300 mother samples with kid interval 8 months, then as 40 months the EG goat kids are 2 470 heads. Today condition for kid interval 278.71 ± 105.38 day or 9 months, can born EG goat kid with different 270 heads.
Keyword: development breeding PE goat, Jarak Village, EG goat

Judul: Penampilan reproduksi kambing jawarandu (Studi kasus di PT Widodo Makmur Perkasa, Propinsi Lampung)
Abstrak: lhis study aimed to learn the reproduction perjonn of Jawarandu goat for the increase in the population cover the aspect of Conception Rate (CR), Service per Conception (S/C), as well as problems that open in the maintenance from 50 Jawarandu goat that consists of 41 heads in natuml breeding and 9 heads in Artrficial Insemination. Method in this study used of descriptive method, and primary data collection through interview with several st& in PT Widodo Makmur Perkasa and secondary data obtained from the available data in PT Widodo Makmur Perkasa, some literature, and the internet. The observation showed that the level success of the reproduction or Conception Rate (CRJ of natural breeding is higher than Artrficial Insemination that is of 82,93% in natural breeding and 66,67% in Artrficial Insentination. The Service per Conception (S'C) of natural breeding is 1,2 and the Artificial Insemination is 1,5. The data showed that S/C of ArhJicial Insemination is higher than natural breeding. The problems that o$en in the maintenance of the Jawarandu goat that is premature, born small, the young goat can't survive because the condition the body too weak, and the fracture.
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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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