Analysis of the connection between herd immunity and vaccination uses a model for spreading infectious diseases with injections vaccines in three forms. The results were analyzed using complete graph to determine the relationship of group immunity to vaccination under the three forms hypothesis of vaccinations against the spread of infectious diseases and drawing a graph from Gephi program. The results showed that herd immunity was directly related to the number of people vaccinated. If the number of people vaccinated is high herd immunity will occur. But if the number of people vaccinated is low herd immunity will be difficult.

The research objective is to study the behavior and community perceptions related to Corporate Social Responsibility (CSR) activities of WHA Industrial Zone Saraburi. The population is the 400 samples from the communities surrounding WHA Industrial Estate Saraburi consisting of four sub-districts namely Nong Pla Mo Sub-district Nong Pling Sub-district Bua Loi Sub-district and Kochasit Sub-district Nong Khae District Saraburi Province. The questionnaire was used as a tool to collect data. The statistics used were descriptive statistics including frequency percentage mean standard deviation. Inferential statistics were also used. The results showed that most of the respondents were female aged 20-30 years with married status a bachelors degree holder or equivalent a private company employee with the average monthly income of 20001 - 30000 baht and 4-6 family members. On the community behavior it was found that the aspect with the highest average of the community behavior towards Corporate Social Responsibility (CSR) activities of the sample group was acceptance with the mean of 3.55. On the communitys perception of Corporate Social Responsibility (CSR) activities it was found that the aspect with the highest average of the communitys perception of Corporate Social Responsibility (CSR) activities of the sample group was the information perception of CSR activities with the mean of 3.50. The hypothesis testing results revealed that the communitys behavior and perception were highly positively correlated with the CSR activities of WHA Industrial Zone Saraburi with statistical significance at 0.01.

The objectives of this study were 1 ) to investigate the marketing mix factors influencing sukiyaki consumption among the elderly in Bangkok 2) to explore the consumer behavior of the elderly in sukiyaki consumption and 3 ) to study the relationship between marketing mix factors and the behavior of the elderly in sukiyaki consumption in Bangkok. The sample was 400 elderly people aged 6 0 years and over who living in Bangkok and consumed sukiyaki as food. A questionnaire was used as a research instrument. Statistics used in data analysis were frequency percentage mean standard deviation and hypothesis testing using Chi-Square. The results found that 1) overall opinion of the sample group was at a high level in terms of opinion on service staffs distribution channels product price service process and physical environment except for marketing promotion there was at moderate opinion. 2) In terms of sukiyaki consumption behavior the most popular ingredients in sukiyaki were fresh vegetables meat and meat products noodles and starchy foods eggs and mushrooms. The sample group liked to consume in sukiyaki restaurants. The reasons for sukiyaki consumption were the taste quality freshness various menus and the price of the food was reasonable with the quantity and quality. The frequency of consuming sukiyaki was less than once a month followed by once a month. The average food cost was between 201-300 bath per person. Most sukiyaki consumption time was on weekends between 13.01-16.00. Most of the consumption consisted of family members and the number of people eating was 4 or more. 3) Marketing mix factors included product factors price distribution channels marketing promotion service staffs service process and the physical environment found to be related to Suki food consumption behavior in terms of the reason for consumption the frequencies used in food consumption per month the average consumption cost per time per person and the time spent in food intake with statistical significance at the .05 level.

This research aims to study the relationship between corporate governance assessment and performance: A case study of listed companies in the Stock Exchange of Thailand. The data was collected from the Corporate Governance Report of Thai Listed Companies and the Thai Institute of Directors with excellent very good and good CG scores for five consecutive years. The data obtained was based on financial statements annual reports and annual registration statements (Form 56-1) from 2015 to 2019 for 214 companies in total. Descriptive and inferential statistics were used for data analysis i.e. Pearson’s correlation coefficient and multiple regression. The findings revealed that corporate governance i.e. the proportion of independent directors the proportion of managerial ownership CEO authority merging and the proportion of meeting attendance of the board had a positive relationship with the performance of listed companies with significance levels of 0.01 and 0.05. The measurement was based on gross profit margin (GPM) return on assets of shareholders return on sales (ROS) and earnings per share (EPS).

The objectives of this research are 1) to study the behavior of buying fresh food through an online application under the new norms.2) To study the importance of fresh food quality influencing the food purchasing decision-making process through an online application under the new norms.3) To compare personal factors and decisionmaking processes to buy fresh food through online application under the new norms.4) To study the relationship between the quality factors of fresh food and the process of making decisions in food purchasing through an online application under the new norms. This research is a quantitative research. The sample group of 400 people are Thai consumers who have used an online application to order fresh food at least once. The questionnaire was used as a tool for data collection. The statistics used for data analysis were frequency percentage mean standard deviation t-Test and F-Test fromone-way analysis of variance and the Pearson correlation coefficient. The findings of this study shown that almost of participants who use the online application are female age between 22-38 which have income 15001-20000 Thai Bahtper month work as employee in private company and all are single. Most of them are living with their families including 3-4 family members. In terms of participants’ behavior they know Tesco Lotuss online application for ordering fresh food the most however mostly ordered the fresh food through Tops #1 Food&Grocery. Participants know the information on how to order food from social media and usually ordered pork. Normally they decided to buy their own and often choose to buy on Saturday from 10.01 - 12.00 and have an average cost of 501 baht or more. The importance of fresh food quality influencing online shopping app decisionmaking under the new norms. Overall opinions and aspects were found to be at the highest level in all aspects. And decisions affecting fresh food choices through online applications under the new norms overall opinion found that the decision was made at the highest level. The highest level of decision making was found in 4 factors and only 1 factor is at the high level. The results of a comparison of consumer decisionmaking processes towards purchasing fresh food through an online application under the new norms the classification according to demographic characteristics were found that gender age average monthly income status and number of family members all the aspects were found to have a statistically significant difference in the decisionmaking process at the 0.05 level. And the analysis of the relationship between fresh food quality and the process of making a decision on choosing fresh food through an online application under the new norms overall aspects were found at moderate level and correlate in the same direction. When considering each aspect it was found that there was a moderate relationship. It also found that the relationship was in the same direction in 3 factors: physical quality sensory quality and safety for consumption.