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 karakteristik wirausaha dengan kinerja industri Tempe di Kabupaten Bogor
Abstrak: Micro and small industries have increased in business performance relatively faster compared to medium and large industries. However, not all micro and small industries increased business performance, such as tempeh industry experience performance degradation due to still face obstacles in running their business. Therefore, it is necessary to identify whether the performance of industrial enterprises decreased due to tempeh entrepreneurs have low entrepreneurial characteristics. Characteristics of entrepreneurs allegedly associated with strong and positive business performance. The purpose of this study to measure the characteristics of an entrepreneurial relationship with business performance tempeh industry. Entrepreneurial characteristics used in this study include self-confidence, result oriented, risk taker, leadership, originality and future-oriented. Tempeh industry business performance measured include production, turnover and profit. Analyzer used Spearman Rank correlation. The results showed a positive correlation between results-oriented and originality to the production and turnover, while there is a positive correlation between entrepreneurial characteristics, except confidence and leadership with a profit.
Keyword: Bogor Agricultural University (IPB), tempeh industry, business performance, characteristics of entrepreneurs

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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