Judul: Konvergensi Keefektivan Kepemimpinan (Kasus Anggota Gabungan Kelompok Tani Pandan Wangi Desa Karehkel, Leuwiliang-Bogor)
Abstrak: Aspek kepemimpinan merupakan salah satu faktor yang turut menentukan perkembangan mutu suatu kelompok tani-ternak, maka upaya-upaya yang mengarah kepada peningkatan mutu kepemimpinan pada suatu kelompok tani-ternak patut dilakukan. Tujuan penelitian adalah : 1) Mengkaji persepsi ketua dan anggota tentang keefektivan kepemimpinan, 2) Mengkaji kesesuaian persepsi ketua dan anggota, 3) Mengkaji hubungan faktor situasi dengan keefektivan kepemimpinan, 4) Mengkaji hubungan faktor individu dengan keefektivan kepemimpinan.
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Judul: Gaya kepemimpinan pada kelompok tani ditinjau dari pelaksanaan fungsi kemimpinan : Studi kasus pada kelompok tani mitra karya tani, desa Pangkal Jaya, Kecamatan Nanggung, Kabupaten Bogor, Propinsi Jawa Barat
Abstrak: Tujuan penelitian ini adalah: 1. Mempelajari gaya kepemimpinan yang diterapkan oleh pemimpin kelompok tani dalam menggerakkan anggota kelompok untuk aktif berpartisipasi dalam kegiatan kelompok. 2. Mengetahui faktor-faktor yang mempengaruhi gaya kepemimpinan yang diterap- kan oleh pemimpin kelompok tani. 3. Mengetahui tingkat kedewasaan anggota kelompok tani. 4. Mengetahui gaya kepemimpinan yang tepat untuk diterapkan pada kelompok tani desa kasus sehubungan dengan tingkat kedewasaan anggota kelompok tani dalam pelaksanaan fungsi kepemimpinan. Penelitian dilaksanakan di desa Pangkal Jaya, Kecamatan Nanggung, Kabupaten Bogor, Propinsi Jawa Barat. Pemilihan lokasi ini dilakukan secara purposive (sengaja), dengan pertimbangan bahwa desa Pangkal Jaya terletak pada lokasi penambangan emas yang dikelola oleh PT. Aneka Tambang, dimana dengan adanya penambangan ini telah dibangun berbagai sarana dan prasarana pembangunan, diantaranya pembangunan jalan desa (aspal) dan listrik masuk desa. Hal ini membawa pengaruh pada meningkatnya mobilitas penduduk desa sehubungan dengan kegiatan usahatani mereka. Disamping itu desa Pangkal Jaya merupakan desa tertinggal yang menerima bantuan dari program IDT (Inpres Desa Tertinggal).
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Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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