Judul: Analisis Biplot dan Procrustes Terhadap Perubahan Kurikulum TPB IPB Angkatan 2010/2011 dan 2011/2012
Abstrak: Bogor Agricurtural University is one of the universitity which applied Tingkat Persiapan Bersama (TPB) program. The purpose is to make an equalization of the basic science lessons quality and understanding for the first year students so they could continue the advance education in each of their faculty. Since TPB program was applied until now, there were many changes that were made to upgrade the quality and efficiency of the program. The last change was made for the class of 2011/2012 with the change on Mathematics, Biology, Physics, and Chemistry course. This study aims is to describe and explore the impact of the curriculum changes which is applied from the class of 2010/2011 to 2011/2012. The Method is comparing the academic achievement between both class with descriptive statistical analysis : scatterplot, boxplot, and biplot and using Procrustes analysis to measure the similarity between both class. Biplot analysis map the departments as object and courses as variable. The result of this study shows that the changes of curriculum which were applied to class of 2011/2012 increase the academic achievement of IPB department’s. Procrustes analysis shows that the biplot of the class of 2010/2011 and 2011/2012 configuration have a 67.4% similarity.
Keyword: Bogor Agricultural University (IPB), TPB-IPB, Procrustes, GPA, Biplot

Judul: Analisis Biplot untuk Memetakan Provinsi Berdasarkan Prestasi Mahasiswa TPB IPB dan Nilai Ujian Nasional
Abstrak: Quality description of schools in academic field is supposed to be seen from attainment of national exam (UN) score. Students’ achievement in college can be described with acquisition of high GPA. Provincial mapping can be used to obtain a description of its position in accordance with the achievement of UN score and students’ achievement in college. The data used in this study for provincial mapping are TPB IPB students’ achievement in 2007/2008 academic year. Provincial mapping is conducted by using biplot analysis. Preliminary data exploration is conducted by using boxplot, GPA-UN plot, and Pearson’s correlation matrix. The correlation between UN score and GPA, which is 0.41**, is highly significant but not large enough to measure successfulness in college. In this study, biplot analysis can explain 74.56% of data variability. Based on the proximity among provinces and the interrelationship of provinces with variables used, these provinces can be grouped into nine groups. This grouping is expected to provide informations on advantages and disadvantages of each province in order to improve its educational quality.
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Judul: Isolasi senyawa sinamaldehida dari minyak kulit kayu manis sedagai antioksidan
Abstrak: Cinnamaldehyde is a major essential oil component of cinnamon bark. Cinnamon oil was isolated by using water distillation method that yielded 0.93% (w/w) or 0.95% (v/w). Gas chromatography mass spectrometry (GCMS) of cinnamon oil showed that the main component of the oil is a trans-cinnamaldehyde 32.8% and 3-phenyl-2-propenal 22.9%. The oil was further isolated for cinnamaldehyde by using preparative thin layer chromatography method at Rf of 0.62. GCMS analysis showed that cinnamaldehyde content was 89.1%. Furthermore, the cinnamaldehyde was tested for its antioxidant activity. The isolated product has antioxidant activity with IC50 of 5.06 mg/L as compared with positive control using butylated hydroxytoluene, which has the activity of 10.4 mg/L.
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