Judul: Ketergantungan Petani Tembakau Terhadap Sistem Kemitraan Perusahaan di Desa Bansari, Temanggung, Jawa Tengah
Abstrak: Partnership system is a collaboration by tobacco farmers and cigarette factory. Socialization is one of part in partnership system. The result showed that partnership system can raise the dependence of farmers on the partner. That dependence will make it difficult for farmers to access technological, financial, and market resources. Finally, the farmers choose to not partnering and make a collaboration with middleman. Currently, the farmers get easier to access tobacco production needs. In addition, the farmers also have higher bargaining position when not partnered with cigarette factory
Keyword: Socialization, Partnership, Dependency, Access Level

Judul: Pengaruh Kemitraan Pabrik Gula Karangsuwung Kabupaten Cirebon terhadap Tingkat Kesejahteraan Petani Tebu
Abstrak: Partnerships in plantation is a mutually beneficial relationship, mutual respect, mutual responsibility, mutually reinforcing, and interdependence among firms with planters. However, the trend of inequality and domination in partnership creates dependency either party in this case the farmers against the company. Dependency is what makes a strong control of the farmers so that farmers in decision-making independence of farming is low. The purpose of this study to analyze the pattern of partnership that exists between PG Karangsuwung with sugarcane farmers, as well as determine the level of independence of the partner farmers trying to farm and farmer's welfare. Based on the results of the study showed that the degree of independence of sugarcane farmers partner does most of the still relatively low, but when seen from the welfare of the majority of already high. This is because the degree of independence is less direct effect on the level of well-being, there are other more influential factors such as the size of land holdings.
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: