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 Fat Intake, Vegetables and Fruits Consumption, and Physical Activity with Overweight and Obesity in Adolescents
Abstrak: Prevalensi remaja kegemukan terus meningkat selama satu dekade terakhir. Peningkatan tersebut didorong oleh kebiasaan remaja yang kurang baik dalam mengonsumsi pangan dan aktivitas fisik yang kurang. Oleh karena itu, penelitian ini bertujuan untuk menganalisis keterkaitan antara asupan lemak, konsumsi sayur dan buah, serta aktivitas fisik dengan status gizi remaja. Penelitian dengan desain studi comparative cross-sectional ini, melibatkan 46 subjek gemuk dan 46 subjek status gizi normal. Hasil penelitian menunjukkan terdapat 29,3% subjek dari kedua kelompok memiliki asupan lemak berlebih. Seluruh subjek dari kedua kelompok dinilai kurang mengonsumsi sayur dan buah. Sebanyak 77,2% subjek dari kedua kelompok memiliki tingkat aktivitas fisik kategori ringan. Asupan lemak subjek gemuk signifikan lebih tinggi daripada subjek status gizi normal (p=0,015). Hasil uji korelasi menunjukkan bahwa asupan lemak berkorelasi positif dengan status gizi (p=0,050; r=0,205), sedangkan aktivitas fisik berkorelasi negatif dengan status gizi (p=0,032; r=-0,224). Tidak ditemukan korelasi yang signifikan antara konsumsi sayur dan buah dengan status gizi (p>0,05), namun rata-rata konsumsi sayur buah subjek status gemuk dinilai lebih rendah daripada subjek status normal. Hasil tersebut mengindikasikan bahwa penting untuk mengontrol asupan lemak, meningkatkan konsumsi sayur buah, dan aktivitas fisik untuk mencapai status gizi normal., The prevalence of overweight and obesity in adolescents has been steadily increasing over the past decade. This was driven by adolescents’ poor eating habits and lack of physical activity. Therefore, this study aimed to analyze the correlation between fat intake, vegetables and fruits consumption, and physical activity with adolescents’ nutritional status. This comparative cross-sectional study design involved 46 overweight obese subjects and 46 normal nutritional status subjects. There were 29,3% subjects of both groups that had excessive fat intake. All subjects were considered not consuming enough vegetables and fruits. There were 77,2% subjects of both groups that had a mild level of physical activity. Fat intake of overweight obese subjects was significantly higher than normal subjects (p=0,015). The correlation test results showed that fat intake was positively correlated with nutritional status (p=0,050; r=0,205), while physical activity was negatively correlated with nutritional status (p=0,032; r=-0,224). No significant correlation was found between vegetables and fruits consumption with nutritional status (p>0.05), but the average vegetable fruit consumption of normal nutritional status subjects was higher than overweight obese subjects. These results indicated that it is important to control fat intake, increase fruits and vegetables consumption, and physical activity to get normal nutritional status.
Keyword: fat intake, overweight and obesity, physical activity, vegetable and fruit consumption

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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