Defrosting at evaporator panel is one of working cycles in freezer. Power consumption in defrosting does not meet the objective of using freezer therefore the approach to decrease power consumption in defrosting is one strategy for energy saving. Normally the cycle of defrosting in freezer is a constant time that specify by referring to the highest humidity period. With this control concept the problem of temperature exchange is not occurred from ice accumulation at evaporator panel but it makes the over necessity of defrosting process in the low humidity season and cause the unnecessary power usage in freezer. This thesis presents the control approach for defrosting by using the difference of the temperature at evaporator and the temperature at chilling area. By using this approach the defrosting process is operated depend on load and the fan is on or off relate to defrosting time. Test results demonstrate that about 12% of power can be saved by this control approach when compared to constant time control.

The purpose of the study was set to analyze the current situation of human resource cost management of tourism business of community enterprises in the lower central region. The study was examined through the perspective of a group of experts scrutinizing future feasibility of human resource cost management of tourism businesses of the lower central region community enterprises. The data were examined by delphi techniques with the data collected through the interviews and questionnaires from three different data collections. The data analysis was completed using means of descriptive median and consistency then confirmed the result with by the interquartile range calculation. It was found that the key components included 1. Mechanism skill cost 2. Management skills cost and 3. Effectiveness skills cost for the determination and validation of future forms of human resource cost management model in tourism business of community enterprises in the lower central region as examined and approved by the experts in all three skills for the feasibility of the future application

This quantitative research aimed 1) to study operation performance of Thai Gem Businesses. 2) To study factors affecting firm performance of Thai Gem Businesses. The research was collected data by using questionnaire with 452 participants from production group of Thai Gem Businesses. The samples were collected conveniently and analyzed by frequency percentage mean standard deviation Pearson’s correlation coefficient and analysis confirmatory with Structural Equation Modeling: SEM. It was one of all statistic techniques to test for causal relationship of variables. The results found that database information management systems have positively affect strategic management and firm performance of Thai Gem Businesses with significant level 0.05. Database information management systems also have positive affect on strategic management of Thai Gem Businesses with significant level α < 0.05. Besides this research results found that database information management systems has positively direct and indirect affecting firm performance by pass strategic management with direct affect on firm performance equal to 0.346 and indirect affect by pass strategic management equal to 0.575. And total affect was equal to 0.921 with significant level. It showed that overall affect of database information management system on firm performance was more than strategic management affect to Firm Performance (0.603) with significant level 0.05. The analysis of correlation coefficient model showed that measurement between latent variables have positive correlation with significant level α < 0.05. The analysis of Structural Equation Model revealed that it wassuitable harmonize with empirical data ( χ2 / df = 1.489 CFI = 0.997 AGFI = 0.957 RMSEA = 0.08 RMR = 0.004) and consistent with the define hypothesis. The research results described the environmental of firm performance approach to strategic management by TOWS Matrix and recommendation on strategic management to solve problems on firm performance of Thai Gem Businesses in order to develop continuous firm performance for competitive advantage.

The purposes of this study were 1) to study the operating status of knowledge management of the Faculty of Liberal Arts. 2) to study the problems of knowledge management of the Faculty of Liberal Arts. 3) to present the development form of knowledge management system of the Faculty of Liberal Arts. This research was a qualitative research. Analytical unit was Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon. The population was the staffs of Faculty of Liberal Arts. The samples were randomly assigned to 8 persons divided into 2 groups: 4 administrators 4 teachers. Research tools were related documents and semi structured interviews.The process of conducting research was to study and analyze the concept theory from Documents to create an interview form collected data from the interviews and analysThe results were found as follows: 1) the operating status of knowledge management of the Faculty of Liberal Arts was 3 steps; Steps to determine the authority structure of the responsible person to proceed knowledge management and the process of knowledge management. 2) The problems of knowledge management of the Faculty of Liberal Arts were 4 sides; (1) By Staffs : The staffs had a lot of obligations lack of leadership Lack of understanding with knowledge management. (2) By organizational structure : Because knowledge management section was not organized into organizational structures it is unclear about budget allocation for activities and allocation support personnel. (3) By organizational culture; it was not conducive to knowledge management. (4) By motivation : Motivation for control of knowledge is management was not clear such as awards. 3) the development form of knowledge management system of the Faculty of Liberal Arts was to consist of 5 keywords; Assignment Creation Usage To give Success. The explanation was as follows; Assignment It means a clear policy and accepted by all parties. Creation it means the creation of staffs to understand knowledge management and the creation of organizational culture into the learning organization. Usage it means to use information technology to help knowledge management and to use knowledge management processes. To give; it means to give a reward for motivation to participate in knowledge management activities. Success; it means all staffs must have the same goal: the success of being a truly learning organization.

This research aims to research develop and develop a web-based tourism management application in Kanchanaburi province. An Analysis of Opinion Assessment on Educational and Web Application Development for Kanchanaburi Tourism Route Management. Based on the results of the analysis the assessment of feedback on the process factors / procedures used in the system performance factors of the system. Factors of convenience beauty and quality factors of the system. The opinions on satisfaction were at a very good level.