Judul: Analisis Bibliometrika Berdasarkan Pendekatan Co-Words : Pemetaan Laporan Hasil Penelitian Pusat Penelitian Biologi-LIPI
Abstrak: The aim of this research is to achieve up to date information on the map of five years (2006 – 2010) researches conducted by the researchers from the Research Centre for Biology, Indonesian Institute of Sciences through technical reports published and reserved in the Library of the same institution. Method of Co-words Analysis Approach on subjects (keywords or descriptors) was implemented. Document fitting are conducted through the assessment on subject similarities and dissimilarities using Jaccard Coefficient Index. The result of this current study shows that there are three most frequently appear keywords (descriptors) for each group: Java, National Parks, and Pandanaceae. This indicates that for five years the researches carried out in the institution have been mainly focused on the exploration on Pandanaceae proceeded in the National Parks located in Java. Other subjects such as diversity, DNA, genetic diversity, habitats, Indonesia, Kalimantan, mangroves, Pandanus, reserved areas, Sulawesi, and Sumatra appear less frequent at least in the last two years, thus indicating popular research topics following the first three subjects.
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Judul: Analisis Kolaborasi Peneliti berdasarkan Disiplin Ilmu dalam Penelitian Institut Pertanian Bogor dengan Pendekatan Bibliometrik
Abstrak: Researcher collaboration is conducted to create better research results from the combination of knowledge among researchers. One approach to review a collaboration of research is called bibliometric, by applying mathematics and statistics studies in library and information science. This research conducted collaboration analysis for the case study of researches in IPB with data obtained from IPBana 1978-2007, which were divided into 3 periods. Collaboration analysis was performed on each discipline grouped by the Universal Decimal Classification scheme. Subramanyam method was used to calculate each discipline’s collaboration level, whereas Spearman rank correlation was utilized to obtain the correlation between researcher collaboration and research productivity. Based on the calculation, the highest level of collaboration and the highest correlation was in the period of 1988-1997.
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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