Judul: Hubungan Gaya Kepemimpinan Terhadap Efektivitas Kelompok (Kasus: Kelompok Tani Mekarsari, Desa Purwasari, Kecamatan Dramaga, Kabupaten Bogor)
Abstrak: Revitalization of Agriculture, Fisheries and Forestry (RPPK) launched by President on June 11, 2005 is as one of the Triple Track Strategy of the United Indonesia Cabinet in order to reduce poverty and unemployment and improving national economic competitiveness and preserving the resources of agriculture, fisheries , and forestry. Effective farmer groups to support the achievement of one of the Revitalization of Agriculture, Fisheries and Forestry. Appropriate leadership style in carrying out group activities support the achievement of the effectiveness of farmer groups. The purpose of this study is to describe the chairman's leadership style, identifying the factors that drive leadership style chair, analyzing the effectiveness of the group, and analyze the relationship with the chairman's leadership style effectiveness Mekarsari Farmers Group, Village Purwasari, Dramaga Subdistrict, Bogor Regency. The research was conducted in farmer groups located in the Village Mekarsari Purwasari, Dramaga district, Bogor regency. From this research can be seen that there is a relationship between individual factors with the leader's leadership style. It is also known there is a relationship between factor group with the leadership style of the group leader. In this study also can be seen that there is a relationship between leadership style group heads to the achievement of the group effectiveness.
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Judul: The Influence of Chief’s Leadership Style on the Efectivity of Farmer Group in Pangkal Jaya Village, Nanggung Sub-distrcit, Bogor Disctrit
Abstrak: Dalam mengelola sebuah kelompok, diperlukan seorang ketua untuk mengajak anggota mencapai tujuan bersama. Gaya kepemimpinan ketua menjadi faktor yang mempengaruhi efektivitas kelompok tani. Tujuan penelitian ini adalah menganalisis pengaruh karakteristik individu petani dan kepemimpinan ketua terhadap efektivitas kelompok tani. Penelitian ini dilaksanakan di Desa Pangkal Jaya, Kecamatan Nanggung, Kabupaten Bogor. Jumlah responden dalam penelitian ini yaitu 70 responden yang ditentukan dengan proportional random sampling. Data yang diperoleh kemudian diolah dan dianalisis menggunakan metode SEM-PLS. Hasil penelitian menunjukkan bahwa kelompok tani di Desa Pangkal Jaya memiliki tingkat efektivitas yang tinggi. Karakteristik individu secara keseluruhan memiliki pengaruh yang tidak signifikan terhadap efektivitas kelompok tani. Kepemimpinan partisipatif memiliki pengaruh yang signifikan hanya terhadap kemampuan bekerja kelompok dan kepemimpinan orientasi prestasi memiliki pengaruh yang signifikan terhadap kepuasan anggota, kemampuan bekerja kelompok, dan produktivitas kelompok., In managing a group, a leader is needed to influence members to achieve common goals. The chairman’s leadership style is a factor that influences the effectiveness of farmer groups. The aim of this research is to analyze the influence of individual farmer characteristics and the leader's leadership on the effectiveness of farmer groups. This research was conducted at Pangkal Jaya Village, Nanggung District, Bogor Regency. The number of respondents in this research is 70 respondents who were determined by proportional random sampling. The data obtained was then processed and analyzed using the SEM-PLS method. The research results show that farmer groups in Pangkal Jaya have a high level of effectiveness. Individual characteristics have an insignificant influence on the effectiveness of farmer groups.Participative leadership has a significant influence only on group work ability and achievement-oriented leadership has a significant influence on member satisfaction, group work ability and group productivity.
Keyword: farmer group, group effectiveness, leadership style

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4