This paper proposes the bidirectional resonant converter with duty cycle voltage control using for CCTV with solar energy. The converter designed at 20 KHz for 20 W with 92.85 % of efficiency is operated at zero voltage switch mode for reducing the losses of converter. The modes of operation divide in two modes for operating bidirectional current. The first part is buck mode which has 5 volt at the output voltage and second is boost mode which has 8 volt at the output voltage. The two operation modes of converter will be discussed in this paper.

The purposes of this study ware to reduce travel documentaries: Conquer the Forest and to study the satisfaction toward travel documentaries: Conquer the Forest. The data collected from 100 people who was tourism visiting at Thong Pha Phum District Karnchanaburi province. The statistics to analyze data employed frequency percentage mean and standard deviation. The results of the study showed that the satisfaction of tourism to travel documentaries: Conquer the Forest was at a high level (x ̅=4.17).

The objectives this special project were to produce the Chao Phraya Cruise 3D Motion Graphic media and to study about the satisfaction of the audiences who watched Chao Phraya Cruise 3D Motion Graphic which the target was 100 of foreign tourists and Thai Tourists. Under this study the statistics used for analyzing the data were frequency percentage average and standard deviation. The study indicated that the samples were satisfied with the Chao Phraya Cruise 3D Motion Graphic about content was at a high level (= 4.41 S.D.= 0.66) and about quality was at the highest level (= 4.63 S.D.= 0.58)

At the present the studies on the Mahachanok jam product is limited. The objective of this research was to study in the textural syneresis and sensory characteristics of Mahachanok jam from three types of geldings (pectin galactomannan and carrageenan) and different storage conditions (room temperature 4o C) for 1 month. It was found that the gel strength rupture strength and brittleness of the Mahachanok jam from carrageenan and galactomannan were higher than pectin (p≤0.05). When the jam was stored at 4oC jam from pectin had highest brittleness and jam from galactomannan had syneresis more than carrageenan and pectin (p≤0.05) respectively. The jam was stored at 4o C found that the syneresis was lower than stored at room temperature. For sensory evaluation the overall acceptance of Mahachanok jam from pectin and carrageenan were higher than galactomannan with the mean of like score between slight to moderate.

Currently the edge image is regarded as important in the process of digital image processing. Because in the field of image processing in certain fields require lines or the edge of a complete description of the image in the photo itself. It is also essential to engineering. Most commonly used to calculate the difference like testicle to calculate the area between the point-to-point. Applied to select the coefficients to be used in combination with a new edge image clarity of the picture more. In this research will be trimming the edge blending image to compare the quality of the image obtained by the theoretical conversion web Paulette (Wavelet Transform) to demonstrate how to mix the new image it can provide the sharpness of the image the better. The assessment found that the proposed method can increase the contrast of the image. And maintaining data within the output video in its entirety