Judul: Kebiasaan Makan, Perilaku Hidup Bersih dan Sehat, dan Status Anemia pada Remaja Putri Keluarga Pemulung di Kelurahan Sumur Batu Bantar Gebang Bekasi
Abstrak: This study was aimed to analyze the association between food habit, clean and healthy behaviour and anemia status in adolescent girls of scavengers families in Sumur Batu Bantar Gebang Bekasi. Cross sectional design was applied in this study. About 72 adolescent girls of scavengers families were purposing sampled in this study. Food consumption among this girls was collected using semiquantitative food frequency and anemia status was measured by hemoglobin level using cyanmethemoglobin. Most of adolescent girls (19.4%) was anemia and 80.6% were non anemia. The girls had moderate food habit (61.6%) based on the frequency of consumption of food is still a lack of food sources of heme. Clean and healthy behaviour among the girls were in a good category (79.2%). The state of the living environments is in a category quite well (59.7%). History of helminthiasis in adolescent girls (41.7%) were in the low category. The result shown there’s no relationship between food habits, clean and healthy behaviour, living environtments and history of helminthiasis with anemia status (p>0.05)
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Judul: Hubungan Kebiasaan Makan dengan Status Anemia dan Usia Menarche Pada Remaja Putri di Perkotaan dan di Perdesaan
Abstrak: Unhealthy food habits may cause adolescent girls to be vulnerable to anemia and delayed age of menarche. The objective of this study was to analyze the association of food habit with anemia status and age of menarche of adolescent girls in South Jakarta (represent urban) and in Jasinga (represent rural). A cross sectional study was conducted involving 100 girls of 8th grade junior high school from four schools. The sampling method was Cluster Random Sampling. Adolelescent girls in urban area were more frequently consumed fish, milk, and fast food, as well as having higher intake of carbohydrate and vitamin A compared with adolescent girls in rural area. In addition, age of menarche of adolelescent girls in urban area were earlier than that in rural area. Haemoglobin concentration of adolelescent girls in both rural and urban areas were not different. There was no correlation between iron bioavailability and anemia status (p>0.05), but positive correlation were found between frequency of egg and green mustard consumption with anemia. There was also negative correlation of fat intake and body mass index and age of menarche (p<0.05).
Keyword: menarche., food habit, anemia status, adolescent girls

Judul: Bifurkasi Hopf pada siklus bisnis IS-LM tanpa dan dengan waktu tunda
Abstrak: One of business cycle models in dynamical economics is the IS-LM business cycle model with time delay, where the time delay lies in stock capital variables. It is a time delay between the existence of stock capital and the time to get ready to invest. In a model without time delay, changing the parameter of investment rate on income could affect the system stability. On the other hand, in a model with time delay, there exists critical time delay changing the system stability. This shows limit cycle, which can be concluded that Hopf bifurcation occurs
Keyword: Bogor Agricultural University (IPB), time delay, Hopf bifurcation, business cycle model