Judul: Analisis Karakteristik Pelaku Kultur Jaringan Skala Rumah Tangga Sebagai Salah Satu Upaya konservasi.
Abstrak: The increasing market demand for ornamental and rare plants and the lack of attention to the gene plasma conservation of genetic resources led to the disappearance of large quantities especially for plants that are not yet clearly established or marketing as rare plants. Conventional preservation requires energy and more cost .technique of tissue culture is an alternative to storing gene plasma in the form of plant tissue or organ in the lab, so that the gene plasma preservation can be more efficient. Given the scale of tissue culture is expected to household financial needs of the community are met and can indirectly pressing either the theft of forest plants and rare plants and also the gene plasma conservation efforts. This study aims to (1) analyze the factors that significantly influence the business decision-scale tissue culture households to remain in business seen from the characteristics of these entrepreneurs, (2) Determine factors affecting business success rate scale tissue culture households .The study was conducted in February 2009-June 2009 in Plant Tissue Culture Lab, Department of Forest Resources Conservation, Faculty of Forestry, Bogor Agricultural University. Data derived from several respondents. Respondents who used to know the analysis of business characteristics scale tissue culture of households consisting of entrepreneurs who have tissue culture tissue culture training household scale. The number of sampled respondents is 80 people. Decision of 80 samples using purposive sample method due to time constraints, cost and difficulty of getting the respondents are still rare due to the scale tissue culture cultivation households. The data obtained were analyzed in the form of descriptive and quantitative. Qualitative analyzed data using logistic regression analysis. The results of logistic regression analysis by including the five unknown variables are the three free variables are real or significant impact on business decision-scale tissue culture households to remain in business network culture. These three variables are the variables of business a long time, income variable and education variable, the variables that does not have real impact on the decision to continue his efforts variable amount of age and gender. Logistic regression model was formed to describe the entrepreneur's decision-scale tissue culture households to remain in business is: -12.23 + 0.0416 Gender (P / L) - 0.0027 Age (Years) + 2.9097 last Education ( Senior High School / Senior Vocational School, Diploma, Bachelor) + 1.3656 duration efforts (Year) + 2.06 Income. Testing the feasibility of the model, can be seen the value of Log Likelihood -18,087, to produce statistics for 57,933 G and the value of p-value for 0000. The p-value smaller than α = 0.1, so it can be concluded there are at least βi ≠ 0 Log Likelihood value of -18,087 for the model can be said is good. Good test model can be seen also from the value of Somers' D, Goodman-Kruskal Gamma and Kendall's Tau-a is a summary table cocordant associations and discordant value 0-1. Component values explains that getting closer to the value of one (1 value), then the model is well said. The value obtained is Somers' D 0.92, Goodman-Kruskal Gamma 0.92 and Kendall's
Keyword: 

Judul: Pengaruh Perilaku Kewirausahaan Petani Anggrek Terhadap Kinerja Usaha: Kasus di Kecamatan Gunung Sindur dan Parung, Kabupaten Bogor, serta Kecamatan Serpong, Kota Tangerang Selatan
Abstrak: The opportunities of orchid development in Indonesia is still potentially increased because of the genetic resources of orchid are abundant, in addition the agro-climatic conditions, availability of land is relatively wide, the support of labor and technology, and the potential market at domestic and abroad, those are comparative advantage that potential to be developed into a competitive advantage. But instead, the performance of orchid industrialization still in low performance. The low performance of the national orchid industry due to the lack of competence orchid farmers, such as: (1) lack of knowledge of consumer preferences, (2) lack of technology in breeding, cultivation, and post-harvest, and (3 ) lack of responsiveness to the market information. The present of orchid farmers entrepreneurial behavior hopely could increase the bussiness performance. In order that, the purpose of the research are; (1) describe the orchid farmers characteristics, (2) to analyse the influence of internal and external factors on entreprenerial behavior, and (3) to analyse the influence of entreprenenurial behavior on bussiness performance. This research used 115 data of orchid farmers, than its analized by SEM using Lisrel 8.3 programs. Based on the results obtained that the characteristics of orchid farmers generally include: (1) the majority of the level of education orchid are high school graduates, (2) they have quite long experience in orchid cultivation, (3) for most farmers this effort is the main livelihood, (4) generally, the venture capital obtained from private equity, (5) the standard of living and welfare of orchid growers generally still in low conditions, due to small-scale enterprises, which in turn impact on revenue, and the majority of orchid growers were oriented only for daily needs. The result by using SEM are; (1) The Entrepreneurial behavior is influenced positively and significantly by the internal factors,instead (2) The external factors gave the negative and significant influences, but it’s directly influence the bussiness performance positively and significantly, (3) entrepreneurial behavior gave positive and significant effect on business performance. SEM shows the test results with the internal factors positive and significant impact on enterpreneur behavior with effect coefficient 0,56. Internal factors measured by indicators; venture scale, capital ownership, ownership of production facilities and infrastructure, motivation achievement, the perception of orchids business and entrepreneurship intentions. Increasing the internal factors will increase the entrepreneurial behavior orchid growers. This shows the increase in business scale, enterpreneurial intentions, motivation achievement and perceptions of high effort, can increase entrepreneurial behavior. External factors significantly and negatively related with entrepreneurial behavior, which the influence coefficient is -0.15. While External Factors significantly and negatively related to entrepreneurial behavior, this is due to government support in the aspect of education and counseling, assistance and capital inputs, promotion and marketing, business regulations, and the availability of market information, are not in accordance with the needs of farmers and not on target. Generally the government support in terms of extension and training, procurement assistance and capital inputs, promotion and marketing, business regulations, and the availability of market information, until now felt not sufficient, and not support the formation of behavioral entrepreneurship. Overall, the governments through the relevant agencies
Keyword: 

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: