Judul: Analisis hubungan tingkat stres dengan nilai UTS metode statistika (Studi kasus: mahasiswa IPB yang mengambil mata kuliah metode statistika pada semester genap tahun ajaran 2013/2014)
Abstrak: Person's success in education can be seen from the learning achievement is usually seen from the test score. Learning achievement is influenced by external and internal factors (physic and psychologic). Psychological condition related with psychiatric condition of person such as stress. Stress can affect decreased academic. There are some factors that cause stress (stressors), both sourced from within themselves, families, and the community. Students are a group who susceptible to stress. This research take a case study students of Bogor Agriculture University who take course Statistical Method with the goal to get information about general description from stress on students and the factors that impact directly and indirectly on the Mid Test Term score of Statistical Method. Path analysis is a method that can be used to analyze the causal relationship between variables in order to determine direct effect and indirect effect, with the factors that cause stress as exogenous variables (descriptors) and the stress score and Mid Test Term score of Statistical Method as variables endogenous (response). The results of this research indicate that there are 114 of the 150 students experience mild stress to very severe stress. High and low of the student stress score greatest influenced by difficult level of adaptability, while the Mid Test Term score of Statistical Method greatest influenced by difficult level of learn the lesson.
Keyword: Bogor Agricultural University (IPB), stressor, stress, path analysis

Judul: Relationship between Stress Level, Physical Activity and Sugar Consumption in Undergraduate Students of IPB University
Abstrak: Stres merupakan kondisi ketika seseorang mengalami masalah atau tekanan yang berdampak pada kondisi fisik dan psikis. Penelitian sebelumnya menemukan bahwa stres berasosiasi dengan aktivitas fisik dan konsumsi gula. Namun, penelitian tersebut belum dilakukan di Indonesia. Penelitian ini bertujuan menguji hubungan antara tingkat stres dengan aktivitas fisik dan konsumsi gula pada mahasiswa sarjana di IPB University. Data dikumpulkan dari hasil pengisian kuesioner oleh 400 mahasiswa sarjana di IPB University. Perceived Stress Scale (PSS-10) digunakan untuk mengukur tingkat stres responden, International Physical Activity Questionnaire (IPAQ) digunakan untuk mengukur aktivitas fisik responden, dan Food Frequency Questionnaire (FFQ) digunakan untuk mengukur konsumsi gula. Data dianalisis dengan perangkat lunak R Studio. Korelasi antara tingkat stres, aktivitas fisik, dan konsumsi gula dianalisis dengan uji korelasi Spearman. Studi ini menunjukkan bahwa mahasiswa sarjana IPB University memiliki tingkat stres yang sedang (19,71±5,28). Tingkat stres tidak berkorelasi signifikan dengan aktivitas fisik (? = -0,006, p-value = 0,95) dan konsumsi gula (? = 0,045, p-value = 0,359)., Stress is a condition when a person experiences problems or pressures that have an impact on physical and psychological conditions. Previous studies have found that stress is associated with physical activity and sugar consumption. However, these studies have not been conducted in Indonesia. This study aims to examine the relationship between stress levels with physical activity and sugar consumption in undergraduate students at IPB University. Data were collected from questionnaires completed by 400 undergraduate students at IPB University. Perceived Stress Scale (PSS-10) was used to measure respondents' stress level, International Physical Activity Questionnaire (IPAQ) was used to measure respondents' physical activity, and Food Frequency Questionnaire (FFQ) was used to measure sugar consumption. Data were analyzed with R Studio software. The correlation between stress levels, physical activity, and sugar consumption were analyzed with the Spearman correlation test. This study showed that IPB University undergraduate students had moderate stress levels (19.71±5.28). Stress level was not significantly correlated with physical activity (? = -0.006, p-value = 0.95) and sugar consumption (? = 0.045, p-value = 0.359).
Keyword: FFQ, PSS, IPAQ

Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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