The study on credit card usage behavior of support staffs at Rajamangala University of Technology Phra Nakhon were aimed to investigate1) personal factors of support staffs at Rajamangala University of Technology Phra Nakhon 2) credit card usage behavior of support staffs at Rajamangala University of Technology Phra Nakhon and 3)The relationship between personal factors and credit card usage behavior of support staffs at Rajamangala University of Technology Phra Nakhon. The instrument used to collect data was a questionnaire; and the sample group in the study was 260support staffs working at Rajamangala University of Technology Phra Nakhon. To analyze data descriptive statistics including frequency percentages and cross-tabulation distributions were applied. The hypotheses were that personal factors were related with credit card usage behavior of support staffs at Rajamangala University of Technology Phra Nakhon. The results revealed that the support staffs at Rajamangala University of Technology Phra Nakhon were between 30 to 39 years old. They held bachelors degrees and worked as the university employees. They were single who earned total income per month of 20001 - 30000 baht. There were 2 - 3 members in the family and had been working for over 5 years. Most of support staffs at Rajamangala University of Technology Phra Nakhon had 1- 2 credit cards with the duration of 2-3 years. The credit card limit was 20000 - 39999 baht. The type of the credit card was Visa card and the amount of monthly credit card spending was 2001 - 5000 baht. Regular cards used were issued by Krung Thai Bank (KTC). The value of goods or services for each spending was 1001 - 3000 baht at the most. Types of products or services that credit cards were used regularly were daily life products. The reason for using a credit card was its convenience for paying for goods or services (cash carried reduction). The channels to receive news that attracted applicants for credit cards were from bank employees and the opportunity to use credit cards to receive reward points to redeem discounts and prizes. Channels of spending via credit cards were through automatic credit approval machines with the frequency of spending of 1 - 3 times per month to pay for goods and services and installment payment for products and services on a periodic basis. The hypothesis test results disclosed that personal factors of the support staffs of Rajamangala University of Technology Phra Nakhon had a relationship with credit card usage behavior the bank cards regularly used the value of goods or services for each use and the opportunity to use credit cards.

The purposes of this research were to study the obesity reduction behavior of undergraduate students of Rajamangala University of Technology Phra NaKhon and to compare the obesity reducing behavior of the male students and female students. The questionnaire was used as a research tool to collect the data. The samples in this study were 401 students: 176 male and 225 female students. All 401 questionnaires were returned. The collected data were analyzed by using the mean score standard deviation and t-test. The statistical significance was at the .05 level. The findings were as follows. 1. The average body mass index of the majority of the students was at a moderate level which was 22.60. They were in normal shape and not overweight. The male students had an average body mass index of 22.48 and the female students had an average body mass index of 21.60. Both males and females were in normal shape. 2. The students obesity reduction behavior was at a moderate level. 3. There was a significant difference between the male and female students’ obesity reduction behavior at .05 level. It was found that the obesity reduction behavior of the male students was significantly higher than that of the female students at the 0.05 level. Those higher obesity reduction behavior included buying a drug to reduce fat drinking tea or coffee to reduce fat and toxins without consulting a doctor using fiber products certified by a physician using laxatives after dinner without consulting a doctor eating basil seeds before having a meal eating fatburning dietary supplements approved by an expert taking medicine to catch fat from ingested food without consulting a physician eating extracts from garcinnia exercising continuously for 30 minutes exercising more than 3 days in a week losing weight by acupuncture being a customer of hand massage service for weight loss getting a gastric bypass being a customer of weight loss institute with modern equipment having treatment service from body institute with modern equipment wearing a tightening belt or clothes buying reducing fat oil cream and using it without consulting a doctor and getting a liposuction by a specialist. Therefore the obesity reduction behavior of the male students was significantly higher than those of the female students at the 0.05 level.