Judul: Praktik Hidup Sehat Dan Persepsi Tubuh Ideal Remaja Putri Sma Negeri 1 Kota Bogor
Abstrak: The research aims were to study healthy living practices and perceptions of ideal body among female students. Design of the research was cross sectional study conducted in October 2010 in senior high school 1 Bogor city. Sample consisted of 40 students thin and 40 students normal. The results showed no significant relationship between personal hygiene practices, smoking practice, sports practice and healthy food practice with the nutritional status (p> 0.05). Vitamin C were the most frequet supplements consumed by the thin group (47.5%) and (45.0%) by the normal group. The thin nutritional status (75.0%) and normal (60.0%) have a negative body perception. It is recommended that the female students perception fit with their actual body size.
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Judul: Analisis Hubungan Persepsi Diri dan Makanan, Konsumsi Pangan dan Status Gizi Remaja Usia Sekolah Menengah di Kabupaten Bogor
Abstrak: Adolescent still in process for rich their mental, emotional, social and physical maturity, thinking ability and transition to a new function in social life. One of mentally violence was thinking bad to become fat, that’s way malnutrition happening in adolescent. Negative perception in adolescent was the base of this research. The aim of this research was to analyzed correlation of body images perception, food perception, and food consumption with nutritional status in adolescent. This research used cross-sectional design, done in high schools, which were SMA Negeri 3 Bogor (city) and SMA Negeri 1 Leuwiliang (rural). Primer data collected was from March until June 2012, with 80 student’s second graduate. Data collected by filled the questioner with interview technic, collected family characteristic’s data and individual characteristic’s data. Body image perception’s data got from interviewed and images chose. Food perception’s data got from interviewed. Consumption’s data got from filled food recall 2×24 hours. Nutritional status’s data got from measured in high and weigh. Data was analyzed with Microsoft Excell and Statistical Program for Social Science (SPSS) version 18.0 for Windows. Correlation was analyzed by Pearson correlation and significant at the 0.05 level. SMA Negeri 3 Bogor’s location in the middle of city that has much public facilities and some shopping area in Bogor, had complete facility at school, allowed bringing their laptop and also smart phone. SMA Negeri 1 Leuwiliang far from public facilities and shopping area, located at rural, school has good facility but not same as SMA Negeri 3 Bogor’s facilities and not allowed to bring their gadget. Family size correlated with where they live in and 15% family size from adolescent samples that live at rural is a big family. Father’s income correlated with where they live in, father’s income from adolescent samples that live around the city is more than five million per month (37.5%), occupied as an official employee and had high education. Father’s income from adolescent samples that live around the rural is one to three million per month (47.5%), occupied as a trader and had education until high school’s graduate. Mother’s from adolescent samples 56.3% is a housewife. Mother’s who work, occupied as an official employee (30%) and occupied as a trader (11.3%) for the next. Mother’s education correlated with where they live in and mother’s education from adolescent samples that live around the city 70% was graduates from university and than mother’s education from adolescent samples that live around the rural 35% was graduates from high school. Adolescent samples who live around the city had better food habit than adolescent samples who live at rural (r=0.425, P=0.000). Adolescent samples who live around the city have better nutritional education than adolescent samples who live at rural (r=0.252, P=0.001). x Adolescent samples had a positive perception about their body image (75%). No specific answers from adolescent samples about their food perception and body shape’s ideal concept, so we can say that their food perception is positive. Adolescent samples nutrition adequacy was low, but for energy and protein adequacy was rich to 70% from energy and protein requirement. Average
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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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