Judul: Analisis Hubungan Perilaku Wirausaha terhadap Kinerja Usaha Pengrajin Tempe Kabupaten Grobogan
Abstrak: Tempeh is one of the products of soybean agricultural development that contributes to improving the income of the people, especially in Grobogan. This study was conducted to analyze the effect of entrepreneurial behavior which consists of knowledge entrepreneurship, entrepreneurial attitude, and entrepreneurial skills to the performance of the business in the craftsmen tempeh Grobogan. The analysis tool used is descriptive analysis and Pearson correlation analysis. The results of correlation analysis showed that knowledge of entrepreneurship, entrepreneurial attitudes, and entrepreneurial skills correlated significantly to the performance of the business. The correlation coefficient of each variable on the performance of the business aspects of business growth are 0.453, 0.658, and 0.590. correlation coefficient between the behavior of the business to business performance aspects of business receipts are 0.449, 0.526, and 0.528. This means that when knowledge of entrepreneurship, entrepreneurial attitude and entrepreneurial skills increases, the performance of the business will increase.
Keyword: tempeh, Grobogan, entrepreneurial behavior, correlation, Business performance

Judul: Hubungan Perilaku Wirausaha dengan Kinerja Usaha Pengrajin Tahu Desa Bojong Sempu, Parung, Kabupaten Bogor.
Abstrak: Kewirausahaan merupakan salah satu jawaban dari masalah pengangguran yang terjadi di Kabupaten Bogor. Kewirausahaan memiliki peranan yang sangat penting untuk kesejahteraan masyarakat. Tahu merupakan salah satu produk hasil olahan pertanian komoditas kedelai yang ikut berperan dalam meningkatkan kesejahteraan, khususnya masyarakat Desa Bojong Sempu. Penelitian ini dilakukan untuk menganalisis hubungan perilaku wirausaha yang terdiri dari pengetahuan wirausaha, sikap wirausaha, dan keterampilan wirausaha terhadap kinerja usaha pengrajin tahu Desa Bojong Sempu. Penelitian ini menggunakan analisis deskriptif dan analisis korelasi pearson. Hasil analisis menunjukkan bahwa pengetahuan wirausaha, sikap wirausaha, dan keterampilan wirausaha berkorelasi signifikan terhadap kinerja usaha. Koefisien korelasi antara perilaku terhadap kinerja usaha secara berturut-turut yaitu 0.397, 0.753, dan 0.410. Hal ini berarti ketika pengetahuan wirausaha, sikap wirausaha, dan keterampilan wirausaha meningkat maka kinerja usaha akan meningkat.
Keyword: Desa Bojong Sempu, kinerja usaha, perilaku wirausaha, tahu

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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