Judul: Correlation between Nutrition Knowledge, Physical Activity, and Eating Habits among College Students during COVID-19 Pandemic
Abstrak: Kondisi pandemi Covid-19 memengaruhi kebiasaan makan dan aktivitas fisik yang dapat beresiko obesitas, sehingga diperlukan pengetahuan gizi dan gaya hidup yang sehat. Penelitian ini bertujuan menganalisis hubungan pengetahuan gizi, aktivitas fisik dan kebiasaan makan mahasiswa selama pandemi Covid-19. Desain penelitian ini adalah cross sectional melibatkan 83 mahasiswa yang berdomisili di Jabodetabek. Data pengetahuan gizi dan aktivitas fisik dikumpulkan dengan self-administered menggunakan google form, sedangkan data kebiasaan makan melalui wawancara online. Hasil penelitian menunjukkan pengetahuan gizi 83,1% subjek tergolong baik. Tingkat aktivitas fisik hampir separuh subjek (43,4%) tergolong berat dan rata-rata waktu duduk subjek 6,8 jam/hari. Kebiasaan makan mahasiswa belum sesuai anjuran pedoman gizi seimbang. Tingkat kecukupan energi dan karbohidrat subjek tergolong defisit berat, tetapi tingkat kecukupan protein dan lemak tergolong normal. Hampir 2/3 subjek memiliki tingkat kecukupan zat gizi mikro tergolong kurang. Terdapat hubungan positif (<0,05) antara pendidikan ibu dengan tingkat kecukupan lemak dan vitamin E, serta konsumsi daging sapi, kangkung, selada, mangga, dan sosis. Pendapatan orang tua berhubungan positif dengan konsumsi roti gandum, kurma, dan tahu (p<0,05). Tidak terdapat hubungan (p>0,05) antara pengetahuan gizi dengan tingkat kecukupan gizi, namun berhubungan positif dengan konsumsi ubi, buncis, salak, dan sosis (p<0,05). Tidak terdapat hubungan antara aktivitas fisik dengan kebiasaan makan (p>0,05), The Covid-19 pandemic affects eating habits and physical activity that can risk obesity; therefore, knowledge of nutrition and a healthy lifestyle are needed. This study analyzes the correlation between nutrition knowledge, physical activity, and eating habits among college students during the Covid-19 pandemic. This study used a cross-sectional design involving 83 students in Jabodetabek. The data were collected via google form and through online interviews. The results showed 83,1% of subjects had good nutrition knowledge. The physical activity level of 43,4% of subjects was classified as high, and the average sitting time was 6,8 hours/day. Students' eating habits are not yet meet the nutrition guidelines. Energy and carbohydrate adequacy were severe deficits, but the protein and fat were normal. Almost 2/3 of the subjects had low micronutrient adequacy. There was a positive correlation (<0,05) between maternal education and fat and vitamin E adequacy and intake of several foods. Parental income was positively related to intake of frequence of some food (p<0,05). There was no correlation (p>0,05) between nutrition knowledge and nutrient adequacy, between physical activity and eating habits (p>0,05), but it was positively related to intake of several foods (p<0,05).
Keyword: College student, Covid-19 pandemic, Eating habits, Nutrition knowledge, Physical activity, Aktivitas fisik, Kebiasaan makan, Mahasiswa, Pengetahuan gizi

Judul: Correlation between Stress Level, Emotional Eating, Snacking Habit, and Nutrients Intake among College Students during Covid-19 Pandemic
Abstrak: Penelitian ini bertujuan menganalisis hubungan tingkat stres dengan emotional eating, kebiasaan snacking, serta asupan zat gizi mahasiswa selama pandemi Covid-19. Penelitian ini merupakan cross sectional study melibatkan 98 mahasiswa yang berdomisili di Jabodetabek. Pengambilan data dilakukan secara daring pada Januari–Februari 2021 melalui kuesioner daring dan wawancara daring. Penentuan tingkat stres menggunakan kuesioner Perceived Stres Scale 10, sedangkan emotional eating dengan Dutch Eating Behavior Questionnaire-Emotional. Uji normalitas menggunakan uji Kolmogorov-Smirnov serta analisis hubungan antara tingkat stres dengan emotional eating menggunakan uji korelasi Spearman dan hubungan antara tingkat stres dengan kebiasaan snacking dan asupan zat gizi menggunakan uji korelasi Pearson. Hampir ¾ subjek (70,4%) mengalami stres sedang, sekitar separuh (52,0%) berperilaku emotional eater, dan hampir 2/3 (60,4%) mengonsumsi camilan >3 kali/hari. Sebanyak 2/5 subjek (39,7%) memiliki kecukupan protein defisit dan 36,7% berlebih untuk lemak. Mayoritas subjek memiliki tingkat kecukupan energi (49,0%) dan karbohidrat (70,4%) yang tergolong defisit. Tidak terdapat hubungan signifikan (p>0,05) antara tingkat stres dengan kebiasaan snacking dan asupan zat gizi, namun penelitian ini menemukan hubungan positif (p=0,04; r=0,21) antara tingkat stres dengan emotional eating, artinya semakin berat tingkat stres maka subjek semakin berperilaku emotional eating., This study aims to analyze the correlation of stress level, emotional eating, snacking habit, and nutrients intake among college students during Covid-19 pandemic. This study was a cross-sectional study, involves 98 college students in Jabodetabek. Data collection was carried out in January–February 2021 through an online questionnaire and interviews. Determining the stress level by Perceived Stress Scale 10, while emotional eating by Dutch Eating Behavior Questionnaire-Emotional. The normality test used the Kolmogorov-Smirnov, analysis of the correlation between stress level and emotional eating using Spearman while snacking habit and nutrient intake using Pearson. Almost ¾ of the subjects (70,4%) experienced moderate stress, about half (52,0%) were emotional eater, and almost 2/3 (60,4%) consumed snacks >3 times/day. A total of 2/5 subjects (39,7%) had a protein adequate level was classified as deficit and 36,7% excess for fat. The majority of the subjects had adequate levels of energy (49,0%) and carbohydrates (70,4%) which were classified as severe deficits. There was no significant correlation (p>0,05) between perceived stress with snacking habits and nutrients intake, but this study found a positive correlation (p=0,04; r=0,21) between stress level and emotional eating, that means the higher the stress level, the subjects more emotional eating.
Keyword: College students, Emotional eating, Nutrients intake, Snacking habit, Stress level

Judul: Best Difference Equation Aproximation to Duffing 's Equation
Abstrak: Persamaan Duffing merupakan persamaan yang sering muncul sebagai model masalah sistem ayun mekanis atau pada masalah rangkaian listrik. Umumnya penyelesaian persamaan ini secara numerik memberikan hampiran dengan gala! yang tinggi, seperti dengan metode Runge-Kutta. Tulisan ini mengkonstruksi suatu persamaan beda untuk menghampiri persamaan Duffing tersebut. Penyelesaian dari persamaan beda ini melibatkan fungsi-fungsi eliptik Jacobi. Berdasarkan penyelesaian ini diperoleh basil bahwa penyelesaian hampirannya persis sama dengan penyelesaian analitiknya. Penyelesaian analitik yang diperolehjuga melibalkan fungsi-fungsi eliptik Jacobi.
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