With the objective 1) to develop communication system operating simulation program using GUI MATLAB 2) To find the efficiency of communication system simulation program using GUI MATLAB and 3) To compare the calculation results from the developed program with the calculation results The parameters of the high frequency transmission line which were developed to be programmed Classified by type of transmission lines in the air depending on the frequency and use including two-wire transmission cables. Twin-plane transmission cables And coax signal transmission lines The program components are divided into 3 screens namely the main screen the main program screen And parameter calculation screen Systematic quality and efficiency checks by 5 experts That has specialized expertise The tools used in the research were the quality inspection evaluation form which is divided into 2 parts which are part 1 program testing and part 2 testing the statistical system used for data analysis including mean percentage and standard deviation. The research found that 1. The result of the development of communication system simulation program using GUI MATLAB with the structure of the program design Dividing operations into 3 main parts Namely the calculation of two signal transmission lines. The calculation of the twin plane transmission line program And the calculation of the coax transmission line program n each part of the program calculation there is a working principle of the program. Each part of the calculation of the program has a working principle of the program. Divided into the terms of the scope of the transmission line Calculate capacity Calculate the conductivity Calculate inductance Calculate resistance And calculate the impedance value In which all calculations can show calculation results Select the calculation of various transmission lines. The program that the research team developed The signal transmission line is divided according to the type of usage and frequency. There are 3 signal transmission lines which are two-wire transmission lines. Twin-plane transmission cables And coax signal transmission lines 2. The result of finding the efficiency of the communication system simulation program using GUI MATLAB is divided into 2 parts. Part 1 Result of the language order and ability test for all 5 sub-processes Is correct No errors in the process In which each working process is linked as designed Overall the system development can work without errors. And when evaluating system acceptance It was found that the developed program could be used as a research tool. When considering each aspect found that Design. Design standards Design quality And the structure that is not complicated design is accepted by experts As a percentage between 82% - 85% Working process sorting work process Understanding of working language is accepted by experts. As a percentage between 82% - 87% And in front of work how to work in each work Compliance with user needs is accepted by experts. As a percentage between 80% - 95% And part 2 finding the performance of the communication system simulation program using GUI MATLAB developed found that the developed program has a high level of performance (x ̅ = 4.16 S.D. = 0.35) 3. Comparison between the calculated results from the developed program and the calculated results With matching calculation results Therefore shows that The developed program can be used in place of efficient calculation by hand.

The purposes of this research were: 1) to study the personal factors of tourists in Ratchaburi Province 2) to investigate the marketing mix factors used in making a decision to buy Chock Tai Yuan textiles among tourists in Ratchaburi Province 3) to examine purchasing decision of Chock Tai Yuan textiles made by tourists in Ratchaburi Province 4) to find out a relationship between personal factors and the purchase decision of Chock Tai Yuan textiles of tourists in Ratchaburi Province and 5) to study the relationship between the marketing mix and the purchase decision of Chock Tai Yuan textiles of tourists in Ratchaburi Province. The sample was 400 tourists in Ratchaburi who decided to buy Chock Tai Yuan textiles. The instrument used in this research was questionnaire. The statistics analysis used in this study were frequency percentage mean standard deviation chi-square and Pearson’s correlation coefficient. The results showed that: 1) Most of the tourists were female whose ages ranged from 41-50 years old with a bachelors degree. They worked as government officers state enterprise employees and university employees. Their income is between 20001 - 25000 baht and their residence is located in Ratchaburi Province. 2) Tourists paid attention to the marketing mix factors with high level of attention. When considering each side of the marketing mix tourist attention from the most to the least were: products individual price process physical characteristics marketing promotion and distribution channel respectively. 3) Most of the tourists could not make a decision whether they should buy the products. When considering purchasing decisions of tourists from the most to the least they were listed as follows: types of Chock Tai Yuan textiles frequency of use objectives for purchasing decisions clothing design the average amount of money spent on clothing and frequency of purchasing decision of Chock Tai Yuan fabrics. 4) For the relationship between personal factors and purchasing decision of Chock Tai Yuan textiles among ourists in Ratchaburi Province the results showed that gender age highest education level occupation average monthly income and residency were related to purchasing decisions of Chock Tai Yuan textiles of tourists in Ratchaburi Province with statistical significance at the . 05 level and 5) There was a relationship between the marketing mix and purchasing decision of Chock Tai Yuan fabrics among tourists in Ratchaburi Province. The correlation of marketing mix factors including price distribution channel marketing promotion individual process and physical characteristics show statistical significance at the .05 level. In contrast there was no relationship between products and purchasing decision of Chock Tai Yuan textiles of tourists in Ratchaburi Province with statistical significance at the .05 level.

The purposes of this research were: 1) to study the personal factors of consumers for choosing local restaurants in Phuket Province 2) to study the consumption factors of local restaurants in Phuket Province 3) to study the factors of marketing mix in the local restaurants in Phuket Province 4) to compare the level of importance of the marketing mix factors in the local restaurants in Phuket Province classified by personal factors of respondents 5)to compare the level of importance of the marketing mix factors in the consumers use of local restaurants in Phuket Province classified according to the use of local restaurants and 6) to present guidelines for local restaurant development in Phuket Province. A sample group of 400 people and local restaurant operators in Phuket has 16 cases. The research instruments are questionnaires and interviews. The statistical techniques used for data analysis were frequency percentage mean standard deviation one-way analysis of variance and analysis of descriptive data. The research found that: 1) most consumers were female aged 36-40 years with a bachelors degree being a private company employee with an estimated income of 10001–20000 baht and they resided in Phuket. 2) As for the reasons of choosing to use local restaurants it was found that most of the consumers chose to consume local food because of their unique identity and difference from conventional food. The most common food consumed was Hokkien fried noodles. The main course and side dishes commonly being consumed was Stir Fried Liang Bai with Shrimp Roe and a popular savory snack was Hu Shae sweet snacks were using Gosui and a popular dessert was Oh Aew. Most people consumed local food once a month and was paying approximately 901- 1300 baht for each meal. 3) Consumers valued the overall marketing mix at a high level. The determinants were in descending order local food price construction personnel and physical presentation and distribution service marketing promotion. 4) Comparing the level of importance of the marketing mix factors in consumers’ selection of local restaurants in Phuket Province found that gender age education level occupation monthly average income and different residences put importance on the factors of marketing mix with no difference except the gender was not different with statistical significance at the .05. 5) Comparing the level of importance of the marketing mix factors in consumers’ selection of local restaurants in Phuket Province found that the reasons for consuming local food popular types of local food popular local food items frequency of local food consumption and the cost of consumption per time were different. Paying attention to the factors of marketing mix there was no statistically significant difference at the .05 level. And 6) guidelines for local restaurant development in Phuket Province were to select raw materials directly from the producer sources in order to maintain freshness and quality. In addition a standard price threshold should be set and suitable for the quality of local food and so do distribution channels. There could be an online order and advertising through various media such as websites or other media in order to disseminate customers to know more about restaurants. In addition there should be a focus on training employees to recognize the importance of service and on educating employees about service skills. At the same time the restaurants should be designed to be unique easy to remember and technology should be adopted for example in the matter of receiving food orders to achieve accuracy speed and error prevention.

This research aimed to study the personal factors operation and effectiveness of the lunch management project in Central Special Education Center Bangkok. The comparison of the effectiveness of the lunch was based on respondents’ individual factors this study proposed guidelines for optimizing the lunch arrangements. The research group consisted of 215 parents administrators and persons in charge of lunch management of which 164 samples were divided into 140 parents and 24 administrators and responsible persons for the lunch. The research instrument was a survey questionnaire. Data were analyzed statistically by using frequency percentage mean standard deviation and one-way analysis of variance. The results of the study indicated that this sample of parents was predominantly female aged between 31 to 40 years holding a lower bachelors’ degree and having a maximum income of 10000 baht. Overall the operations of the lunch project were performed at a high level. It appeared that the raw materials had the most average followed by administration management. The personnel aspect was the least. Moreover parents’ perception towards the effectiveness of the lunch project were high. Considering each aspect ordered from the highest to the least they respectively included quantity type quality of lunch safety and health administration and favorite luncheon menus. The comparison of the effectiveness of lunch project management and the perception of parents classified by their personal factors revealed that there was a significant difference at 0.05. The found guidelines for increasing the effectiveness of the lunch projects were to provide quality food ingredients the variety of tasty and nutritious dishes and five food groups. Moreover recruited dietitians were required to cook clean disease-free and healthy food by either frying steaming boiling or grilling the food. As a result of fully utilizing nutrients students would stay fit and healthy.

The purposes of this research were: 1) to study the individual factors of consumers in Chonburi Province 2) to investigate the marketing mix factors used for purchasing decisions of traditional Chinese pastry cake products of consumers in Chonburi Province 3) to find out the purchase decisions of traditional Chinese pastry cake products of consumers in Chonburi Province 4) to examine factors affecting the purchase decisions of traditional Chinese pastry cake products of consumers in Chonburi Province and 5) to establish guidelines for the development of Chinese pastry cake products for consumers in Chonburi Province. The sample in this study included 400 consumers in Chonburi who chose to buy Chinese pastry cake products and 7 business owners who sold Chinese pastry cake products. The research instruments consisted of questionnaires and interviews. The data were analyzed by using statistical analyses: frequency percentage mean standard deviation chi-square and descriptive data analysis. The results can be summarized as follows: 1) Most of the consumers were female between the age of 31-40 running a private business with an average monthly income of 20001 - 30000 baht and 74% of the study sample reside in Chonburi Province. 2) Overall consumers’ attention for the marketing mix was at a high level. When considering each aspect of the marketing mix factors the results reported that customers’ attention for the marketing mix from the most to the least: location individual price customer service marketing promotion and products. 3) The consumers purchased pastries as gifts or souvenirs for other people. Most of them bought a mix of golden bean paste pie and pumpkin in syrup once a month (3 - 4 pieces about 201 - 500 baht each time). Most consumers bought those desserts for themselves. 4) Factors affecting Chonburi consumers’ purchase decisions for Chinese pastry cake products were as follows: 4.1) The individual factors affecting consumer’s purchase decisions involved gender age occupation and average monthly income. Those factors affected the purchase decisions of Chinese pastry cake products of consumers in Chonburi Province with statistically significant differences at the .05 level. The residence of the consumers however did not result in purchasing decisions of Chinese pastry cake products at the .05 level of significance. 4.2) Marketing mix factors affecting consumers’ purchasing behavior included products price distribution marketing promotion personal factors location and service with significant results at the .05 level. In addition to the guidelines on how to develop Chinese pastry cake products for consumers in Chonburi Province the business owners should improve the pastries to attract market demand. Packaging improvement should be a combination of modern and traditional styles. The price should be various based on the types of products. Also developing distribution channels through social media and the decoration of attractive storefronts with Chinese themes should be implemented. Moreover there should be advertising through social media. Employees should be trained on the product and customer service knowledge. The store must be easily accessible to common people using public transportation. The shop owners should focus on the quality of the customer service and customer satisfaction enhancement.