The purposes oj the research were to create computer assisted instruction for Jewelry Finishing Subject to find out the efficiency validation of computer assisted instruction based on the standard of 90/90 and to analyse the students leaming achievement after using the computer assisted instruction. The subjects in tile study were 17 first-year diploma engineering students enrolling at Rajamangala University of Technology Phra Nakhon. The researcher made the experiment by having the students pretest. Then they studied by using the computer assisted instruction focused on practicing basic turning. After the students had studied and had posttest the efficiency of the computer assisted instruction was calculated as well as the learning achievement was analysed. The research result revealed that the efficiency of the computer assisted instruction was at the standard of 90 1 90. Moreover the learning achievement after using the computer assisted instruction was different at the significant level of 0.05.

The purposes of the research were to create and efficiency validation of computer assisted for the Computer for Jewelry Design based standard 90/90 and analyse the leaning achievement ofthe student after by using computer assisted instruction. The subjects in the study were 17 first year diploma students enrolled in Rajamangala University of Technology Phra Nakhon. The Researcher using the experiment by let the students do until test before class And then study by using computer assisted Computer for Jewelry Design. After that let students do the unit test again at the class and calculate to fmd out the efficiency of the computer assisted instruction and analyse the leaning achievement of students after study . The research result revealed that the efficiency ofthe computer assisted Instruction was efficient in standard 90/90 Moreover after learning achievement At significant level of 0.05.

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 special project study aims to create transformative jewellery for women from Lanna-style glass as well as to examine the satisfaction of the target groups on the jewellery. The different three design of the transformative jewellery were sketched based on the review information. The jewellery can be split into smaller pieces which are a necklace earrings and a brooch. Then a favourite design was considered by five experts. Some recommendations for better design were also provided. After that the jewellery was created according to the selected sketching. The satisfactions on the jewellery were collected from two groups of people; 1) twenty-five jewellery entrepreneurs and 2) twenty-five working women aged 18-60 years (Ministry of Labor 2019). The total data of fifty samples were analysed by using frequency percentage and mean. The results showed as following. Three of the five experts chose the design number three as the model was interesting. The necklace earrings and brooch can be detached to suit an outfit perfectly. The experts preferred the transformation by studs and hooks. Furthermore the colour tones are harmonious and can draw the human perception resulting in a variety application on an outfit. The satisfaction of two groups of people; 1) jewellery entrepreneurs 2) working women aged 18-60 years; were examined. It was found that for the style of the jewellery both groups were satisfied with the creativity of the jewellery design at the highest level the satisfaction means were 4.80 and 4.68 respectively. In terms of materials the entrepreneurs were satisfied with the novelty the strength and durability and the safety of materials at the highest level having the same means of 4.36. The working women were satisfied with the suitability of the materials at the highest level with the mean of 4.52. In terms of utility both groups had the satisfaction of wearing to parties at the highest level with the mean of 4.56 and 4.44 respectively. Regarding the price the entrepreneurs were satisfied with the price of 3999 baht at the highest level with the mean of 4.48. Also the working women were satisfied with the price of 2999 baht at a high level with the mean of 4.20. For the place of distribution both groups had the satisfaction of the jewellery stores at the highest level with the mean of 4.96 and 4.52 respectively.

Research on the community of Participatory Learning Practice Fabric Pattern to Development of Local Hand-mend Cloth Products of Sewing Community Enterprise and Craft Khao of Sewing Khao Kaew Srisomboon Thung Saliam Sukhothai Province. The objectivity of this project is to study the patterns of cloth to develop hand-woven fabric products. The learning practice of local fabric patterns to develop 5 sets of hand-woven jewelry products then 5 sets of jewelry experts were asked to consider selecting suitable hand-woven jewelry sets for making. 3 sets of jewelry and asked 5 experts from the community state enterprise sewing and artificial arts to transfer the invention of handwoven jewelry to the community 1 set and to study the satisfaction of the target group of 30 people and analyze the data. By using statistics frequency percentage standard deviation and mean with the following analysis results. The findings of the study were as follows. It was found that Local fabric patterns Appeared in 3 traditional fabric patterns: Saeng pattern Plain pattern and Kaew pattern. Learning practice of local fabric patterns for the development of hand-woven fabric accessories. All 5 jewelry experts chose the style of jewelry set A set B and set D commenting that the style has suitable elements of jewelry. In particular the combination of local fabric patterns and geometric shapes creates a contemporary look. Size and proportion should be adapted to the proportion of the wearer. And the use of color always use the original color of the fabric especially red. Because it is a color that is unique when it comes to making the piece it will help make the jewelry more beautiful and dimension as well as indicate the identity of the people of Khao Kaew Srisomboon. The expert representative of the community enterprise group I chose the A Series because of the contemporary style. Can generate income for people in the community And the satisfaction of the target groups towards making jewelry sets it was found that the product Satisfaction with aesthetics was the highest at an average of 4.83 in terms of suitability of the fabricated material. The satisfaction of the materials used was interesting at an average of 4.67 in terms of utility. Satisfaction in wearing on various occasions at the average 4.66 and distribution. Satisfaction in the jewelry trade show at an average of 4.60 communities working on learning patterns of local fabrics to develop hand-woven products. Has given importance to the history the meaning use of color and the belief in cloth pattern hooves from shared memories of people in the community. Fabric patterns both Saeng pattern Plain pattern and Kaew pattern Therefore it is a reflection of the people in Khao Kaew Srisomboon community that has inherited the wisdom heritage that is more than precious. Rather it is the inheritance of intent from generation to generation.