Judul: Analisis kelayakan finansial modernisasi usaha ternak sapi potong di Kecamatan Wanayasa, Kabupaten Banjarnegara
Abstrak: Wanayasa is one of the highest populations of beef cattle districts in Banjarnegara regency, but mostly of the beef cattle feedloting are efforted by small scale and simple technology. This research studies about feedlot technology changing from traditional technology to the modern one. The purpose of this researches are to analyze modernization of feedlot financial feasibility. Respondents of this research are cattleman of Wanayasa which are containts seventeen respondents as the representation of traditional feedlot and CV Brahman Putra as the representation of modern feedlot. This research uses investation criteria analysis method. The results shows that modernization of feedlots are feasible to be done and the decreasing of the beef cattle selling price are the most determine factor feedlot feasibility
Keyword: Bogor Agricultural University (IPB), modernization, feasibility analysis, beef cattle

Judul: Analisis produksi dan daya saing usaha penggemukan sapi potong di Kabupaten Agam Provinsi Sumatera Barat
Abstrak: The domestic beef cattle producers have supplied only 70 percent of the national need. Demand of the beef cattle has not been accompanied by an increased supply response. One of the major problems in beef cattle fattening is its low productivity that might be caused by its low efficiency of input use. On the other side low productivity also caused an increase in the number of imported beef cattle. Therefore, this study aims to analyze : (1) factors that influence the production of beef cattle fattening, (2) the level of technical efficiency of beef cattle fattening, (3) beef cattle fattening competitiveness, and (4) the impact of government’s input-output policy on the competitiveness of beef cattle fattening in Agam district. The stochastic production frontier is used to estimate production function, while Policy Analysis Matrix was employed in this study to measure level of competitive and comparative advantage and effect of government interventions on beef cattle fattening. The results showed that quantity of forage, concentrate, cattle’s age, and livestock ownership significantly influence production. The average value of the farm technical efficiency is 0.764 ranging from a minimum of 0.478 to a maximum of 0.996. Beef cattle fattening is profitable and has competitive and comparative advantage. Fattening produces profits that create positive incentives for producers and reflect an efficient use of domestic resources.
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Judul: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition