Judul: Kebiasaan Sarapan Hubungannya dengan Produktivitas Kerja Karyawan PT. Samick Indonesia
Abstrak: The objective of this research is to analyze the relationship between breakfast habits with the employees productivity of PT. Samick Indonesia. This research used cross sectional study design, and the method was observational survey. Breakfast could contribute energy, protein, iron (Fe), vitamin A, and vitamin C to the total intake as follows 12.47%, 13.19%, 24.44%, 20.00% and 3.01%. The average of nutrient intake from breakfast for energy 321±141 kcal/day, protein 8.02±4.51 gram/day, iron (Fe) 4.00±1.49 mg/day, vitamin A 114.38±129.38 RE/day, and vitamin C 2.59±5.34 mg/day. The result showed that sample who always breakfast is equal to 80.4%, but 56.5% of the sample who did the breakfast does not meet the productivity targets. This study showed that there was no significant relationship (p>0.05) between breakfast habits and employees productivity. But, there was significant (p<0.05, r=0.266) relationship between nutritional status and employees productivity. It’s shown by 23.9% with normal nutritional status meet the productivity targets. It is concluded that the breakfast habits of employees at PT. Samick Indonesia not yet showed work productivity is good, because the quality and the contribution of nutrients intake consumed at breakfast does not meet the needs of iron (Fe), vitamin A, vitamin C and specifically for the needs of energy and protein 20-25% and 15-25% of the total daily energy and protein required respectively (Depkes RI 2009). Finally, it is strongly advised for employees at PT. Samick Indonesia to improve the quality of nutrients intake consumed at breakfast, so that they can improve the work employees productivity and reach their intented target.
Keyword: Bogor Agricultural University (IPB), nutritional status, employees productivity, breakfast habits

Judul: Hubungan Kebiasaan Sarapan dengan Status Gizi dan Prestasi Siswa SMA N 1 Pangururan Kabupaten Samosir
Abstrak: The aim of this study was to analyze the correlation of student’s breakfast habit to nutritional satus and academic performance. A cross sectional study was conducted in this study. Subjects were 35 female student and 35 male student. The result showed that male student (77.14%) and female student (85.71%) have normal nutritional status. The level of nutrition knowledge of male student (82.86) and female student (82.86%) were classified good. Breakfast frequency of female student (65.71%) more regular than male student (51.43%). Most of subjects were don’t have enough time to breakfast. Energy and protein adequacy were 25.25% and 18.26% from breakfast. Subjects academic level (58.57%) were classified as good category. Spearman rank correlation showed a not significantly correlation between nutrition knowledge and nutritional status (p>0.05). However, there was a significant correlation between breakfast and academic performance (p<0.05)
Keyword: Bogor Agricultural University (IPB), nutritional status, nutrition knowledge, breakfast, Academic performance

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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