The study of ethical behaviors through students perception in the field of business administration in Rajamangala Institute of Technology Bangkok Commercial Campus was a study to find seven ethical behaviors of the students those were : honesty discipline generosity responsibility hard-working self-reliance and gratitude. The purpose of this research was to study seven aspects of ethical behaviors through students perception and compare the ethical behaviors between sex and learning achievement. The sample of this study selected by using simple random sampling technique from students in six majors of business administration field of study. In each major -Accounting Marketing Infonnation System Management Business English and Finance -50 students was selected as sample of the study totally 300 students. A questionnaire was used in collecting data. The findings were as follow : It was found that the ethical behaviors through the students perception was totally in high level. As for each aspect it was in high level 5 ones -gratitude honesty self-reliance discipline and responsibility respectively. For the medium level there were two aspects: hard-working and enerosity. The comparison of ethical behaviors through students perception by sex found that ethical behaviors of male students were totally in the medium level and female students were in high level. When considering in each aspect ofboth sexes the highest means was in gratitude honesty was lower. The total of comparison was found statistically significant difference at the 0.5 level. It was also found that there were four differences in statistical significance at the 0.5 level -honesty discipline responsibility and self-reliance. The comparison of ethical behaviors through students perception by learning achievement found that totally ethical behaviors of students with low achievement (lower than 2.00) were in the medium level. Students with medium achievement (2.00 -2.99) and those with high achievement (3.00 -4.00) were in high level. When considering each aspect of students with low medium and high achievement the highest means was in gratitude and followed by honesty except students with low learning achievement the lower level was discipline. The result of totally comparison was different at the 0.5 statistical significance level. There were two different aspects with statistical significance at the 0.5 level in the aspect of honesty and self-reliance.

The objective of the independent study was investigating consumers’ behavior and consumers’ satisfaction to assess the Khun Or Nam Neung ChockChai 4 Restaurant. Basic factor of demographics and satisfaction levels could provide into the 4 marketing mixed factors that includes product price place and promotion. Samples were selected from 400 persons who consume in Khun Or Nam Neung Chock Chai 4 Restaurant. Data were collected by questionnaires and analyzed using software. The results of this independent study founded that most consumers were female aged more than 45 years old (58.00%) received a bachelor degree (42.00%) company enterprise (48.00%) and average revenue more than 30000 baht per month (42.00%). The most of Vietnamese food is “Nam Neung” and the reasons that they choused because Vietnamese food was very difference taste from another. For the most satisfaction level the marketing mixed factor was place factor. For the more satisfaction level the marketing mixed factors were product factor and price factor. For the medium satisfaction level the marketing mixed factor was promotion factor.

The purpose of this research is to study the level of knowledge and understanding in democracy of the youths in Bangkok metropolis and study the differential level of knowledge and understanding in democracy according to gender age education level family incomes and occupation of the parents interesting level in political news and the participation in political activity. This research is a survey esearch. The sample groups is the youths who live in Bangkok metropolis 2500 persons from 50 district 50 persons for each district by accidental sampling. Questionnaire is used as a tool in data collection. The statistics by means of percentage frequency arithmetic means standard deviation and Chi-square. The results are as the following: 1.Knowledge and understanding in democracy. The youths have knowledge and understanding level in democracy totally in middle level. When compare the knowledge and understanding in democracy which in ideal status with political status and daily living status found that most of the youth has knowledge and understanding totally in middle level. When compare in each items that the youths answer yes more than 90% is Man should has equal right. Thai nationality has right to select their religious. The government should role the country with transparency. The transparency for the Government and provable is the most important thing in democracy system. The daily living of each person in democracy system must in the equality of the right such as the equality of life and the equality in freedom. 2.The factors that affecting the knowledge and understanding level which a statistical significance at .05 is age education level family incomes occupation of parents interesting level in political and participation in political activity. The gender factors is not imply significantly in statistics. 3.The participation in political activity. The most of the youths have participation in political activity in low level. The political activity that they mostly participated is the voting. Another activity that the youths participated occasionally is inviting the others to vote. Except these two activities the youths never participated. 4.The interesting in political news. Most of the youth get the news from the mass communication and television is the most communication that they used to follow the news. Newspaper the youths are read sometimes. The youths will discuss or exchange their idea with their friend mostly about entertainment news. For the political news they will discuss or exchange their idea in less.

The research aimed to study and compare : 1. foods and nutrition knowledge of adolescence by looking at gender and level of education. 2. the awareness of foods and nutrition by comparing gender and level of education. 3. the practice of foods and nutrition by comparing gender and level of education. 4. study the relationship between knowledge awareness and practice of foods and nutrition of the adolescence in Muang District Prachinburi Province. Tests and questionnaires were used to gather the data from 346 samples. The Stratified Random Sampling was used. The data were analyzed by using percentile mean standard deviation t-test one way analysis of variance and Pearson’s Product moment correlation at 0.01 - 0.05 significant level. The study found that 71.4% of the sample was female and 41.0% was high school graduate. The sampling adolescence had good knowledge of foods and nutrition. Different gender had significantly different level of foods and nutrition knowledge at 0.01 while different level of study had no different level of foods and nutrition knowledge. The sampling adolescence had foods and nutrition awareness at high level Different gender had significantly different level of foods and nutrition awareness at 0.01 while different level of study had no different level of foods and nutrition awareness. The sample group had good foods and nutrition practice at moderate level with no difference between gender and level of study. There was a positive relationship between foods and nutrition knowledge awareness and practice of the adolescence at 0.05.The relationship between knowledge and awareness was moderate and the relationship between knowledge and practice was low.

This research proposes the variance estimation method of Pareto data and to compare three variance estimation methods. Those methods are simple method the adjusted variance method with term (n - 1)/n and the adjusted variance method with term (n - 2)/n. The research was considered by the absolute of bias (|Bias|) the mean absolute errors (MAE) and the mean square errors (MSE) of variance estimator. This research used Monte Carlo Simulation method. Results of this research show that the |Bias| of simple method is the lowest for almost all conditions. We can arrange the methods as follows: the adjusted variance method with term (n - 1)/n and the adjusted variance method with term (n - 2)/n respectively. For all situations the MAE and MSE the of adjusted variance method with term (n - 2)/n is the lowest. We can arrange the methods as follows: the adjusted variance method with term (n - 1)/n and simple method respectively.