Judul: The Correlation Analysis of Food Consumption Quality and Fat Intake with Nutritional Status of Female Adolescents.
Abstrak: Konsumsi lemak pada remaja seringkali berdampak pada kualitas konsumsi pangannya sehingga berdampak pula pada status gizinya. Oleh karena itu, penelitian ini bertujuan untuk menganalisis hubungan antara kualitas konsumsi pangan dan asupan lemak dengan status gizi pada remaja putri SMA Negeri 33 Jakarta. Desain penelitian ini adalah cross sectional study dengan subjek sebanyak 62 orang yang dipilih secara purposive sampling. Subjek terbagi dalam dua kelompok, yaitu 31 orang berstatus gizi lebih dan 31 orang berstatus gizi normal. Data dikumpulkan melalui pengisian google form dan wawancara melalui telepon. Hasil penelitian menunjukkan bahwa asupan lemak, kontribusi lemak terhadap kebutuhan energi, dan kualitas konsumsi pangan pada subjek berstatus gizi lebih tidak berbeda signifikan (p>0,05) dengan subjek berstatus gizi normal. Berdasarkan hasil uji korelasi Chi-square menunjukkan bahwa terdapat hubungan signifikan (p=0,005) antara pekerjaan ayah dengan status gizi. Hasil uji korelasi Spearman menunjukkan bahwa terdapat hubungan signifikan positif (r=0,251, p=0,049) antara pendidikan ibu dengan kualitas konsumsi pangan. Hal ini berarti bahwa semakin tinggi pendidikan yang dimiliki ibu maka kualitas konsumsi pangan anak semakin baik. Hasil uji korelasi Spearman menunjukkan bahwa tidak terdapat hubungan yang signifikan (p>0,05) antara asupan lemak, kontribusi lemak terhadap kebutuhan energi, dan kualitas konsumsi pangan dengan status gizi. Kata kunci: asupan lemak, kualitas konsumsi pangan, remaja putri, status gizi, Fat consumption in adolescents often has an impact on the quality of their food consumption, which also has an impact on their nutritional status. This study aimed to analyze the correlation between food consumption quality and fat intake with nutritional status of female adolescents at SMA Negeri 33 Jakarta. This cross-sectional study involved 31 overweight subjects and 31 subjects with normal nutritional status. The data was obtained through filling out of online google forms and telephone interview. The results showed that the food consumption quality, fat intake, and the contribution of fat to energy requirement of overweight subjects were not significantly (p>0.05) different with normal nutritional status of subjects. Chi-square’s correlation test showed a significant correlation (p=0.005) between father’s occupation with nutritional status. Spearman’s correlation test showed that there was a significant positive correlation (r=0.251, p=0.049) between maternal education levels and the food consumption quality. This indicated that the higher the level of mother’s education, the better the food consumption quality of her child. The food consumption quality, fat intake, and its contribution to energy requirement were not significantly (p>0.05) correlated with subject’s nutritional status. Keywords: fat intake, female adolescents, food consumption quality, nutritional status
Keyword: Fat intake, female adolescents, food consumption quality, nutritional status

Judul: Correlation Between Body Image, Breakfast and Snacking Habit with Nutritional Status of Female Adolescents
Abstrak: Rasa tidak puas pada bentuk tubuh bagi remaja seringkali berdampak pada kebiasaan makan sehingga menunda dan/atau melewatkan waktu makan. Oleh karena itu penelitian ini bertujuan untuk menganalisis hubungan antara body image, kebiasaan sarapan, dan jajan dengan status gizi remaja putri SMA Negeri 33 Jakarta. Desain penelitian ini adalah cross sectional study dengan subyek berjumlah 62 orang dipilih secara purposive sampling, terdiri dari 31 subyek dengan status gizi lebih dan 31 subyek dengan status gizi normal. Pengumpulan data dilakukan melalui google form dan wawancara melalui telepon. Hasil penelitian menunjukkan bahwa subyek berstatus gizi lebih yang memiliki body image negatif (93,5%) adalah signifikan (p<0,05) lebih banyak daripada yang berstatus gizi normal (77,4%). Kebiasaan atau frekuensi sarapan dan jajan subyek berstatus gizi lebih masing-masing tidak berbeda signifikan (p>0,05) dengan yang berstatus gizi normal. Berdasarkan hasil uji korelasi menunjukkan bahwa terdapat hubungan signifikan positif (p=0,001, r=0,410) antara body image dengan status gizi subyek. Hal ini berarti bahwa semakin tinggi nilai z-score IMT/U (overweight) subyek maka persepsi terhadap body image semakin negatif. Namun demikian tidak terdapat hubungan signifikan (p>0,05) antara body image dengan kebiasaan sarapan dan jajan., Dissatisfaction with body image for adolescents often has an impact on eating habits that are different from usual, causing them to delay and/or skip meals. This research aimed to analyze the correlation between body image, breakfast and snacking habits with nutritional status of female adolescents at SMA Negeri 33 Jakarta. A cross sectional study design with 62 subjects selected purposively sampling, consisting of 31 subjects with overweight nutritional status and 31 subjects with normal nutritional status. Google forms and phone interviews were used to obtain the data. The results showed that overweight subject with a negative body image (93,5%) were significantly higher (p<0,05) than those with a normal nutritional status (77,4%). Breakfast and snacking habits, estimated by its frequencies, of overweight and normal nutritional status of subject were not significantly (p>0.05) different. Based on the correlation test, there was a significant positive correlation (p= 0,001, r= 0,410) between body image and the nutritional status of the subjects. This indicated that the higher the z-score BMI/A (overweight) subject, the more negative the perception of body image. Meanwhile, there were not significant correlation (p>0.05) between body image with breakfast and snacking habits.
Keyword: ody image, breakfast habits, nutritional status, snacking habits

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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