The Effectiveness of Salt Business Empowering Program (Pugar) on Salt Farmers’ Income Improvement in Kedungmutih Village of Demak Regency

Indonesian national low productivity of salt which is unequal between the need level and salt consumption eventually results in salt import made mainly to meet the industrial needs. The government through the Ministry of Marine Affairs and Fisheries has released a Public Salt Business Empowering Program (known as PUGAR/Pemberdayaan Usaha Garam Rakyat). PUGAR is an empowering program focusing on the improvement of job opportunities and welfare for salt farmers/managers to achieve the self-sufficiency of salt for consumptions and industries. This research aims at examining the influence of salt business empowering program on the salt farmers’ income improvement in Kedungmalang village of Jepara Regency; the implementation level of salt business empowering program in Kedungmutih Village of Demak Regency when compared to that in Kedungmalang Village of Jepara Regency; and the influence of salt business empowering program on the salt farmers’ income improvement in Kedungmutih village of Demak regency. The research was conducted using a descriptive method with a case study approach. The program implementation was quantitatively analyzed. Furthermore, the effectiveness of PUGAR on income was analyzed using T-test. The test result showed that there were income differences in Kedungmutih and Kedungmalang Village before and after the implementation of PUGAR. This finding showed that PUGAR was proven as an effective program to improve the salt farmers’ welfare through income improvement.

Noether Symmetries, Corresponding Conservation Laws and Applications

This thesis is based on a geometrical/physical analysis of the conserved quantities/forms related to each Noether symmetry of the geodetic Lagrangian of plane symmetric and spherically symmetric spacetimes. We present a complete list of such metrics along with their Noether symmetries of the geodetic Lagrangian. The conserved quantities corresponding to each Noether symmetry are obtained. Thereafter, a detailed discussion of the geometrical and physical interpretation of these quantities is given. Additionally, the structure constants of the associated Lie algebras are obtained for each case. Furthermore, we find the Ricci tensors to see which metrics are gravitational wave solutions and the scalar curvatures are obtained in each case to analyze the essential singularities. The stress-energy tensors and their traces are obtained in each case as these are the sources of spacetime curvature. The last part of this thesis is to use the symmetries to obtain the invariant solutions whenever possible. The problem of constructing the optimal system has been be used to classify invariant solutions. We intend to find the one-dimensional optimal systems of the Lie subalgebras for the system of geodesic equations by using Noether symmetries. Further, we find the invariants corresponding to each element of the optimal system. These invariants enable one to reduce the system of geodesic equations (nonlinear system of 2nd order ordinary differential equations (ODEs)) to a system of first order ODEs. The resulting systems are solved via known methods (e.g., separation of variables, integrating factor etc). In some cases, we are able to get exact solutions of the system of geodesic equations.