Judul: Relationship between Diet Quality, Sleep Quality, and  Physical Activity with the Nutritional Status of IPB Students.
Abstrak: Permasalahan gizi saat ini pada kelompok dewasa awal adalah permasalahan gizi ganda, yang disebabkan berbagai faktor, diantaranya kualitas diet, kualitas tidur, dan aktivitas fisik. Penelitian ini bertujuan menganalisis hubungan kualitas diet, kualitas tidur, dan aktivitas fisik terhadap status gizi mahasiswa tingkat akhir IPB. Desain penelitian adalah cross sectional study, dilaksanakan Desember 2022 sampai Januari 2023 pada 40 mahasiswa. Pengumpulan data dilakukan dengan wawancara, pengukuran antropometri, dan pengisian kuesioner. Hasil penelitian menunjukkan sebagian besar subjek (68%) memiliki pengetahuan gizi cukup. Hampir seluruh subjek (95%) memiliki kualitas diet rendah berdasarkan Diet Quality Index International (DQI-I). Lebih dari 3/4 subjek (77,5%) memiliki kualitas tidur buruk berdasarkan Pittsburgh Sleep Quallity Indeks (PSQI). Hampir separuh subjek (42,5%) memiliki aktivitas fisik sedang berdasarkan International Physical Activity Questionnaire (IPAQ-SF). Status gizi hampir 2/3 subjek normal (65%). Hasil Uji korelasi Spearman menunjukkan tidak ada hubungan signifikan (p>0.05) antara pengetahuan gizi dengan kualitas diet, kualitas diet dengan status gizi, kualitas tidur dengan status gizi, dan aktivitas fisik dengan status gizi. Terdapat kecenderungan skor pengetahuan gizi baik pada subjek dengan kualitas diet tinggi, kecenderungan skor kualitas diet rendah dan skor kualitas tidur buruk pada subjek dengan status gizi tidak normal. Kata kunci: aktivitas fisik, kualitas diet, kualitas tidur, pengetahuan gizi, status gizi, Current nutritional problem in early adulthood is double burden malnutrition, caused by various factors, including diet quality, sleep quality and physical activity. This study aims to analyze relationship between diet quality, sleep quality and physical activity on the nutritional status IPB final year students. Research design was cross-sectional study, carried out from December 2022 to January 2023 on 40 students. Data collection was carried out by interviews, anthropometric measurements, and filling out questionnaires. Results showed majority subjects (68%) had sufficient nutritional knowledge. Almost all subjects (95%) had low diet quality based on Diet Quality Index International (DQI-I). More than 3/4 subjects (77.5%) had poor sleep quality based on Pittsburgh Sleep Quality Index (PSQI). Almost half of subjects (42.5%) had moderate physical activity based on International Physical Activity Questionnaire (IPAQ-SF). Nutritional status of almost 2/3 subjects was normal (65%). Results of Spearman correlation test showed no significant relationship (p>0.05) between nutritional knowledge and diet quality, diet quality and nutritional status, sleep quality and nutritional status, physical activity and nutritional status. There was tendency for good nutritional knowledge scores in subjects with high diet quality, tendency for low diet quality scores and poor sleep quality scores in subjects with abnormal nutritional status
Keyword: diet quality, nutritional knowledge, nutritonal status, physical activity, sleep quality

Judul: The Correlation between Nutritional Intake, Physical Activity, and Quality of Sleep with Student’s Learning Concentration in SMA Dwiwarna Boarding School Parung
Abstrak: Penelitian ini bertujuan untuk menganalisis hubungan asupan zat gizi, aktivitas fisik, dan kualitas tidur dengan konsentrasi belajar. Studi cross sectional dilakukan pada siswa/i SMA Dwiwarna Islamic Boarding School, Parung, Kabupaten Bogor. Subjek penelitian berjumlah 76 orang yang dipilih secara purposive sampling. Data yang dikumpulkan meliputi data karakteristik individu dan keluarga, asupan zat gizi, tingkat aktivitas fisik subjek, kualitas tidur subjek, dan konsentrasi belajar subjek. Hasil penelitian menunjukkan sebagian besar tingkat kecukupan zat gizi makro dan mikro subjek tergolong kurang. Aktivitas fisik sebagian besar subjek (64,5%) tergolong ringan pada hari sekolah dan (77,6%) tergolong sedang pada hari libur. Hampir seluruh subjek (67,1%) juga memiliki kualitas tidur yang buruk dengan rata-rata skor PSQI 6,9. Hasil penilaian konsentrasi belajar menunjukkan lebih dari setengah subjek (55,3%) memiliki konsentrasi yang kurang dengan rata-rata skor DSST 62,7. Tidak terdapat hubungan yang signifikan antara status gizi, tingkat kecukupan zat gizi, dan aktivitas fisik dengan konsentrasi belajar, tetapi terdapat hubungan signifikan positif antara kualitas tidur dengan konsentrasi belajar subjek., This research aim is to analyze the correlation between nutritional intake, physical activity, and quality of sleep with learning concentration of the subjects. Design of this study was cross sectional study. Subjects of this study were 76 person of Dwiwarna High School Islamic Boarding School, Parung, Bogor District students selected by purposive sampling. The data collected includes data on individual and family characteristics, nutritional intake, the subject’s physical activity level, the subject’s sleep quality, and the subject’s learning concentration. The results showed that most of subject had low macronutrient and micronutrient adequacy level. The average of subject physical activity was low active on school days (64,5%) and moderate active on holidays (77,6%). More than half of subjects (67,1%) had poor sleep quality with an average PSQI score 6,9. Learning concentration assessment results showed more than half of subjects (55,3%) had low level of learning concentration with an average of DSST score 62,7. There was no correlation between nutritional status, nutritional adequacy level, and physical activity with learning concentration of subject, but there is a correlation between quality of sleep with learning concentration.
Keyword: learning concentration, nutritional intake, students

Judul: : Persamaan Tunggal sebagai Representasi Kurva Komposit
Abstrak: A mathematical method is introduced to represent a composite curve based on an extension of analytic geometry. The representation is given either with a single equation or with two equations, in the case of parametric representation. This method permits the representation of composite curves in similar manner to the conventional representation of non-composite curves. Some mathematical tools, including Heaviside unit step function and periodizer function, are used in the establishment of a single equation. In this paper, regular equations of regular and irregular polygon, as well as composite curves of two dimensions, are implemented using a computer algebraic system, Mathematica.
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