Judul: Perencanaan, Pelaksanaan dan Evaluasi Program Pemberdayaan Kelompok Tani dalam Pengembangan Usahatani (Studi Kasus Program Ubi Madu Kelompok Cahya Tani di Desa Benteng, Kecamatan Ciampea, Kabupaten Bogor)
Abstrak: Kelompok tani sebagai pelaku utama menjadi salah satu kelembagaan pertanian yang berperan penting dalam pembangunan pertanian. Pertumbuhan kelompok tani sebagai organisasi mandiri dapat diwujudkan dengan pelaksanaan evaluasi dan perencanaan program berkaitan dengan kegiatan tani yang dibina oleh penyuluh pertanian. Kegiatan penyuluhan pertanian diarahkan menuju bentuk kelompok tani yang semakin terikat oleh kepentingan dan tujuan bersama dalam meningkatkan produksi dan pendapatan dari usaha taninya. Tujuan dari penelitian ini adalah menganalisis hubungan antara perencanaan, pelaksanaan dan evaluasi program pemberdayaan kelompok tani dalam pengembangan usahatani. Metode yang digunakan adalah pendekatan kualitatif dengan instrumen kuesioner yang didukung dengan instrumen observasi lapang, wawancara mendalam, analisis dan dokumentasi. Perencanaan, pelaksanaan, dan evaluasi program pemberdayaan kelompok tani terbukti saling berhubungan. Perubahan yang diharapkan dengan diadakannnya Program Ubi Madu belum sepenuhnya tercapai sehingga pengembangan usahatani yang diharapkan pun belum tercapai dengan sempurna., Farmer groups as the main actors become one of the agricultural institutions that play an important role in agricultural development. The growth of farmer groups as independent organizations can be realized by implementing program evaluation and planning related to farming activities carried out by agricultural extension workers. Agricultural extension activities are directed at farmer groups who are increasingly bound by common interests and goals in increasing production and income from their farming business. The purpose of this study was to analyze the relationship between evaluation and strategy of farmer group empowerment programs in farming development. The method used is a qualitative approach with an instrument questionnaire supported by field instrument observations, in-depth interviews, analysis and documentation. Evaluation of the farmer group empowerment program and farming business development are proven to be interconnected. The expected changes with the Honey Sweet Potato Program had not been fully achieved so that the expected farming development had not been achieved perfectly.
Keyword: Evaluasi Program, Kelompok Tani, Pemberdayaan Usahatani, Pengembangan Usahatani, Perencanaan Program

Judul: Peran kepemimpinan kelompok tani dan efektivitas pemberdayaan petani
Abstrak: Ketidakberdayaan petani timbul akibat petani kurang mampu menggunakan sarana produksi secara maksimal. Ketidakberdayaan juga timbul akibat kurang mampunya petani dalam memasarkan hasil produksi pertanian. Melalui kelompok tani, pemerintah berpotensi dapat melakukan pemberdayaan dan proses pembelajaran untuk memperbaiki kualitas hidup mereka. Di dalam proses pemberdayaan kelompok tani dibutuhkan peran pemimpin untuk mendorong terjadinya aktivitas pemberdayaan. Pemimpin mempunyai peranan yang sangat penting untuk mempengaruhi dan memotivasi petani untuk mencapai tujuan bersama dalam kelompok tani. Tujuan penelitian ini adalah untuk menganalisis hubungan antara kepemimpinan dengan proses pemberdayaan kelompok tani dan hubungan antara proses pemberdayaan dengan tingkat keberdayaan, serta hubungan faktor personal dan faktor lingkungan dengan proses pemberdayaan petani. Metode yang digunakan adalah survei yang dilengkapi dengan pendekatan kualitatif dengan wawancara mendalam terhadap informan. Hasil penelitian diolah dengan menggunakan Rank Spearman dan Chi-square. Penelitian dilakukan pada kelompok tani Bina Sejahtera di Desa Situ Udik Kecamatan Cibungbulang Kabupaten Bogor dan pada kelompok tani Hurip di Desa Cikarawang Kecamatan Dramaga Kabupaten Bogor. Hasil penelitian menunjukkan hubungan nyata positif antara kepemimpinan dengan proses pemberdayaan, sedangkan proses pemberdayaan tidak menunjukkan hubungan yang nyata dengan tingkat keberdayaan. Sebagian faktor personal menunjukkan hubungan nyata yang positif dengan tingkat partisipasi antara lain usia dan tingkat pendidikan, sedangkan faktor lingkungan tidak menunjukkan hubungan nyata dengan proses pemberdayaan., The powerlessness of farmers is caused by the farmers are not able enough to use the equipment of production optimally. The powerlessness is also caused by the unqualified farmers in marketing their agricultural production. Through the farmer groups, the government has a potential to do the learning process and the empowerment to improve their quality of life. In this empowerment process of the farmers group, it needs the role of leader to push the activity of empowerment. The leader has a very important role to influence and motivate the farmers to achieve their goal together through the farmer groups. The aims of this research are to analysis the correlation between leadership with process of farmer groups empowerment, the correlation between the empowerment process with level of empowerment, and also the correlation between personal factor and environment factor with the empowerment process. The methods which is used in this research is survey which is supported by qualitative approach with in-depth interviews to the informants. The result of this research was processed by using Rank Spearman and Chi-Square. The research was conducted to the farmer groups Bina Sejahtera in Situ Udik Village, Cibungbulang Sub-District, Bogor and to the farmer groups Hurip in Cikarawang Village, Dramaga Sub-District, Bogor District. The result of the research shows a real positive correlation between the leadership with the empowerment process, while the empowerment process doesn’t show a real positive correlation with the level of empowerment. Some personal factors show a real positive correlation with the level of empowerment.
Keyword: kepemimpinan, pemberdayaan petani, kelompok tani

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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