Judul: Analisis Minat Beli Produk Day Cream Berbahan Baku Rumput Laut: Pendekatan Theory of Planned Behavior
Abstrak: Seaweed is one of the marine resources were overflow and widely used is day cream. One of seaweed day cream product that was in the market that is seaweed day cream from IPB development results that are sold in Serambi Botani. The purpose of this research is to examine the effect of the Theory of Planned Behavior (TPB) that is attitudes, subjective norms, and behavioral control toward intention to buy seaweed day cream. This research used cross-sectional study design wich involved 400 female students that selected randomly. The student attitude on seaweed day cream product belong in the moderate category (74.0%), but the subjective norm (60.8%) and behavioral control (73.0%) belong to the less category, and more than half of students (75.2%) are not interested to intention to buy the product. The result showed that all three components of TPB (attitude, subjective norm, and behavioral control), origin, and mother's occupation significant and positively correlated and influential on intention to buy.
Keyword: subjective norm, seaweed day cream, intention to buy, behavioral control, attitude

Judul: Pengaruh Motivasi dan Persepsi Risiko terhadap Minat Beli Day Cream Berbahan Baku Rumput Laut
Abstrak: Day cream product from seaweed can be an alternative good product for skin. One of the released day cream is seaweed day cream which sell in Serambi Botani as development of research toward seaweed extract. The purpose of this research was to analyze the effect of motivation and perceived risk towards intention to buy seaweed day cream. This research took place at IPB Dramaga Bogor, West Java. Sampling technique that conducted in this research was simple random sampling and involved 400 female students as participant. The results showed that IPB female students were motivated and had no perceived risk if would buy seaweed day cream, but still not interested in buy a seaweed day cream. Analysis of regression indicated that intention to buy seaweed day cream jointly effected by age, region of origin, allowance, using the day cream experience, motivation, and perceived risk. Motivation and perceived risk variables proved to give effect partially towards intention to buy seaweed day cream.
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Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular