This research presents the studying of short circuit in distribution system that affect to critical equipment voltage sag and overvoltage while short circuit event. Lead into the quality of electric user. Effect on economics damaged Distribution system voltage level 22kV of The Provincial Electricity Authority. It is the analysis model by computer program. The event of short circuit set in a many distribution systems. The analysis result Magnitude of voltage while short circuit bring to assessment voltage sag and overvoltage from average voltage of the repeat event. Then set boundary of voltage at load point in a many. The experiment shows the problem of the quality of electric be affect to critical equipment less than load point close connection with substation.

This research aims to evaluate performance ease of use and security of designer bathroom for People with Visual Impairment. To establish criteria for designing bathrooms for people with visual impairment convenient and secure. The testing of bathroom designed for People with Visual Impairment in the ease of use and safety. From a sample of 30 people from evaluating the performance of People with Visual Impairment bathroom. To establish design criteria have been concluded. Orientation access various functions within the toilet should be placed in a triangular pattern. The size of the space available in each section should have a width close to reaching both the left and right or 1:00 to 1:20 meters approximately which led to the creation of the navigation functions. The surface should look different. But both have the same floor area. Case in point empirically for various functions. Use a light spot Or wall colors yellow orange To those who have blurred vision. Use more convenient The height of the counter should not be less than 0.80 meters so that disabled people have to stoop so dangerous. Detailed breakdown of wet and dry areas. The slope should be greater than the lower level. Or the waterproof (CURB) distance from the gate to reach the final (toilet) should be approximately 2:00 to 2:40 meters that should enhance security by using the cushioning material at the wall. Edge counters And bidets The research was to evaluate the efficiency of People with Visual Impairment bathroom. To establish design criteria To be appropriate And safe to use From designing a bathroom for People with Visual Impairment. The result is a conclusion from the test sample only preliminary. The need for additional testing of water and three forms or compare with typical bathroom. From a diverse group of users to have a complete research results and to determine the design criteria occur.

This research was aimed at studying 1) an outcome of the Continuing Professional Development (CPD) for Thai business bookkeepers under the Accounting Act B.E.2543 (2000) for Asean Economic Community and 2) an evaluation of the Continuing Professional Development (CPD) for Thai business bookkeepers under the Accounting Act B.E.2543 (2000) for Asean Economic Community in terms of casual relationship of knowledge and attitude with practice. The questionnaires were constructed as a research tool for collecting data from 398 Thai business bookkeepers. The data was statistically analyzed by SPSS version 16.0 and AMOS version 6.0 with frequency distribution percentage mean standard deviation and Structural Equation Modeling: SEM. In regard to the outcome of the Continuing Professional Development (CPD) the research finding indicated that the sample group had knowledge for the Continuing Professional Development (CPD) at high level ( =0.77). Their attitude was agreeable to the Continuing Professional Development (CPD) ( =3.63). Also they had practice on the Continuing Professional Development (CPD) at adequate level ( =0.74). In regard to the evaluation of the Continuing Professional Development (CPD) for Thai business bookkeepers under the Accounting Act B.E.2543 (2000) for Asean Economic Community in terms of casual relationship at a statistical significance of 0.05 the research finding indicated that knowledge and attitude had casual relationship with practice on the Continuing Professional Development (CPD) under the Accounting Act B.E.2543 (2000) for Asean Economic Community and knowledge had casual relationship with attitude of the Continuing Professional Development (CPD) under the Accounting Act B.E.2543 (2000) for Asean Economic Community. Furthermore this developed casual relationship model used for evaluating the Continuing Professional Development (CPD) for Thai business bookkeepers under the Accounting Act B.E.2543 (2000) for Asean Economic Community was created consistently with empirical data and had ability to predict at good level and acceptably because the correlation was 81.6% which its acceptance was more than 40%.

This research is aimed to establish the small wireless sensor network under the real environment. The objectives this research is aimed to study the data transmission and evaluate the data transmission performance of RPL protocol in wireless sensor network. Four nodes of wireless sensor network have been installation and transmissions between nodes in single-hop and multi-hop have been simulation for testing and analyzing data from the network following the transmission performance index. The research found that the number of hop and building environment are the principle factor to the performance of RPL protocol this might be the major limit to implement the RPL protocol in wireless sensor network

After a propeller shaft was damaged from chloride in sea water it has been fixed by MAG welding process with flux cored wire. Its service life after welded depends on the corrosion resistance of the weld metal. This research aimed to compare the corrosion resistance of two different weld metals between X111-T5-K4 and E71T-1CH8/T/9M-D flux core wire. The test specimens were prepared according to the ASTM G1-103 standard and tested by salt spray test conforming to the ASTM B 117 standard. The result of the test showed that the corrosion rate of the weld metal using X111-T5-K4 flux cored wire is lower than the weld metal of E71T-1CH8/T/9M-D flux cored wire which was 0.21 and 0.32 mm2/hr. respectively. The mass loss at 24 hours of E71T-1CH8/T/9M-D X111-T5-K4 flux core wire were 0.32 and 0.48 grams respectively. Therefore enhancing the service life of propeller shaft from chloride corrosion should use X111-T5-K4 flux core as weld metal