The research involved the characterization of the properties of silver alloys -bearing copper and zinc. The alloys composed of 58.4% silver 20.85-41.76% copper and 0-20.83% zinc respectively. When comparing the characteristics of this alloy and sterling silver 925 the alloy specimen had mechanical properties better than the sterling silver 925. The alloy tests presenting the mechanical values of the hardness shear bond strength elasticity of the specimen were in a range of 54.6-95.3 HV1 209.5-379.3 MPa. 100.6-193.8 MPa. and 32.1-51.7% respectively. While the mechanical values of sterling silver 925 were 52.8 HV1 193.5MPa. 96.0 MPa. and 29.8% respectively. Besides these the microstructure of the alloy specimen showed the dendrite structure. We found that this structure decreased when the concentration copper in the specimen increased. After adding zinc into the alloys the high amount of zinc caused the zinc-rich (alpha) phase changed to Eutectic phase together with the significantly increased area of alpha phase. These effects therefore brought up the better various mechanical properties of the alloys. At the same time the another test specimen composed 58.67% Ag 39.20% Cu and 2.14% zinc. The color level of this specimen was close typically to the sterling silver 925 with the difference of Da at 0.236 and Db only at 5.268. Additionally the higher copper concentration in the alloy provided a value tentatively increased but b value decreased. However more remarkable results were that the zinc showed opposite effects from the copper.

The purposes of the research were to design and develop a computer assisted instruction package with tutorial through e-learning on computer technology curriculum and to find out efficiency effectiveness and learners’ satisfaction towards the package. The research tools are 1) the Computer Instruction Package on Database Management System Subject 2) Achievement evaluations 3) Quality assessment and evaluation form for multimedia software and 4) Questionnaire of learners’ satisfaction. The research results reveals that the efficiency of the Computer Instruction Package was at 82.50/82.56 corresponding with 80/80 criteria. The analysis of pre-test and post-test scores finds that the effectiveness after the process (Epost) was at 82.56 which was higher than one tested before the process (Epre) which was at 14.62. Therefore the Computer Instruction Package on Program Design and Development could increase the students learning effectiveness up to 67.94 corresponding with 60 criteria. The Mean of satisfaction of the sampling groups was rather at a high level (4.28). It could be concluded that the Computer Assisted Instruction Package with tutorial through e-learning on computer technology curriculum had the efficiency that could used for self study.

The aims of this study are as follows 1.) to develop a new woven Mud Mee pattern which inspired by optical art integrated with the silhouette of Prasat Si Khoraphom in Surin province 2.) to use the developed Mud Mee pattern to improve clothing design influenced from 1960s fashion 3.) to test the satisfaction level of the finished Mud Mee clothes from the sample group. There are 7 textile professionals including pattern designers textile artists Mud Mee textile specialists and 4 fashion designers as supervisors in screening the patterns and designs. The sample group was selected from the staffs who work in Rajaphat Surindra University and Rajamangala University of Technology Northeast (Surin Campus). The tools used in this research were the fabric pattern sketches inspired by optical art integrated with the silhouette of Prasat Si Khoraphum the 1960 fashion clothing design sketches and the satisfaction survey. The statistical package for the social science program was used to find mean and percentage. This study found that the most selected designs from 7 textile professionals were Pra Sart Moom Soong pattern Phasom Phasarn Nammatam pattern and Barai Sai Nam pattern. There were 9 jacket sketches that had been selected. The level of satisfaction on the clothing design from 1960 era of 213 women staff who work in Rajabhat Surindra University and Rajamangala University of Technology Northeast (Surin Campus) showed that the Phrasat Moom Soong pattern gained the highest level of satisfaction (4.78) The Barai Sainam pattern was the most aesthetics pattern (4.70). Finally the sample group satisfied the color and pattern of Phasom Phasan Nammatham the most (4.73). In Chon-Phoa group the most aesthetic jacket patterns were Phrasat Moom Soong (4.67) and Phasom Phasrn Nammatham(4.70). While the Bari Sainam pattern appeared to have the highest level of correlation between pattern and clothing design (4.74). In the uniform group the most aesthetic 1960 jacket patterns were Phrasat Moom Soong (4.74) and Phasom Phasrn Nammatham(4.71). While the Bari Sainam pattern appeared to has the highest level of correlation between pattern and clothing design (4.73). In Art and Fashion group highest level of correlation between pattern and clothing designs for each pattern were Phrasat Moom Soong pattern (4.67) Bari Sainam pattern (4.69) and Phasom Phasrn Nammatham (4.70).

This paper presents risk assessment of damages for equipments in the building based on IEC standards and ITU-T recommendations. The study of risk assessment of damages for equipment in the building includes of 6 main topics: calculation of frequency of damages due to lightning discharges calculation of risk of damage calculation of risk areas estimation of probability factors consequential damage factor acceptable risk levels and mitigation methods to reduce the influence of power line induction affecting to equipment. Also the implementations of surge protective devices (SPDs) at the entrance of power lines into the building contribute to a further decrement of damage.