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 Model Siklus Bisnis Kaldor Kalecki tanpa dan dengan Waktu Tunda
Abstrak: Business cycle model is one of dynamical system models in economic. One of the business cycles model is Kaldor-Kalecki model. Kaldor-Kalecki business cycle model that is written in delayed defferential equations, is a business cycle model that involves gross product and capital stock of a company. In this paper Kaldor-Kalecki business cycle model is analyzed using both nondelay and delay in time of capital stock. By Taylor expansion for the time delayed model, an analysis of stability around the fixed points has been done. Furthermore, by using Hopf bifurcation theorem, it can be shown that there exists periodic orbits and limit cycle. In the nondelayed model, changing the parameter of goods market could lead to the occurrence of Hopf bifurcation and the existence of limit cycle. Similarly, for the delayed model, it has been shown that changing the time delay parameter may result in the occurrence of Hopf bifurcation and limit cycle.
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