The objectives of this research were to study 1) the marketing mix factors of choosing derlers of Japanese imported wind instruments 2) consumer loyalty of choosing derlers of Japanese imported wind instruments and 3) to study the influence of marketing mix factors in choosing derlrs of Japanese imported wind instruments. The sample group was 240 consumers who chose to use sales representatives Japanese imported wind instruments. The questionnaire was used to collect data in the metropolitan areas. The data were analyzed using statistics including frequency percentage mean standard deviation and multiple regression analysis which was applied to test the hypothesis. The study result indicated that most respondents were males aged between 31 - 40 years old working as engineers earning monthly income averaged between 20001 - 40000 baht. The marketing mix factors of Japanese imported tools dealers in terms of the distribution channel was considered highest followed by the price process personnel product physical characteristics and the marketing promotion respectively. Regarding the consumer loyalty in choosing Japanese imported wind instrument dealers the highest was word of followed by the price sensitivity purchasing intention and claim behavior respectively. The hypothesis testing reveal that the marketing mix factors in terms of price did influence the loyalty in all aspects namely word of mouth purchasing intention price sensitivity and claim behavior. Therefore the hypothesis was accepted. The marketing mix factor related to product had no influence on loyalty in every aspect such as word of mouth purchasing intention price sensitivity and claim behavior. Therefore the hypothesis was rejected. The marketing mix factor related to the process and price that influenced the consumer loyalty towards word of mouth in choosing dealers of Japanese imported wind instruments. The marketing mix factors related to price sales staff and distribution channels influenced the consumer loyalty in choosing dealers of Japanese imported wind instruments. The marketing mix factors related to price sales staff and process influenced the consumer loyalty and price sensitivity in choosing dealers of Japanese imported wind instruments. The marketing mix factors related to the physical characteristics price and marketing promotion influencing consumer loyalty claim behavior and promotion in choosing dealers of Japanese imported wind instruments.

The objectives of this research are to design the load cell tolerance testing machine and demonstrate the tolerance of load cell with a tolerance test that has a beam length of 90 cm. It can create the compressed force at the load cell more than 1 kN The experiment cam be divided into 2 stages; 1.) verification of load range and 2.) linearity test. Both stages are tested at a temperature at 25°C using 10 to 30 kg of mass in the lowest compressed force condition of 0.091 kN and the maximum compressed force condition of 1.12kN As a result the linearity performance of the tolerance of the load cell test kit between calculated force and displayed value force are different 0.354 percentage only while the standard deviation of displayed value force and voltage signal output are 0.0013 and 0.0022 respectively. It reveals that the experimental result is reliable because of less than 1. In addition the tolerance of the load cell tolerance testing machine is 0.00300 (0.3 percent) which was calculated from the comparison of the tolerance specification of two main equipment that specified by manufacturer.

This research presents the development of ultrasonic scaler for mobile dental unit. The operation of the scaler uses a phase-locked loop circuit to generate high frequency electrical signal. Then the signal is amplified with a Darlington amplifier circuit to feed to the coil in the Hand Piece resulting in Magnetostriction. This phenomenon causes the stretching and shrinking of the magneto-strictive stack with high frequency which causes the tip of the scaling head to vibrate more than 20000 times/second. Traditional ultrasonic scaler for mobile dental unit has thermal problem of the amplifier circuit due to use of the transistors as the switching devices. When used for a period of time the scaler is necessary to stop working resulting in not much scaling per day. This research solved the problem by using MOSFETs as switching devices and adding cooling system to the amplifier circuit. The experiment was carried out using actual conditions. The experimental results show that the developed scaler has increased the number of scaling per day. In addition it will still remove plaque and dirt in the gumline around the base of the teeth similar to the scaler used by general dentists.

The purposes of this study were to investigate the heat transfer and the vibration characteristics caused by front and back vented brake disc which had physically different shapes affecting braking distance. In accordance with the theory of heat transfer the heat transfer rates of two types of brake disc were different and played an important role in the deformation during usage. The single dynamometer was conducted to the experimental work as an engineering tool with boundary conditions according to JASO C406 standard. One degree of freedom (DOF) acceleration signals on the brake caliper were analyzed. The results obviously discovered that the back vented brake disc was able to reduce the vibration up to 43.5% comparing to the front vented brake disc in case of the braking temperature 200C initial breaking speed 50 km/h and the hydraulic pressure of 4 MPa. Besides the hydraulic pressure at 4 MPa generated the maximum vibration. Furthermore the initial braking speed and the braking temperature were also the important factors. Regarding braking distance results the results of the experimental work obviously discovered that the back vented brake disc created braking distance shorter than front vented brake disc. Besides there were important factors as braking temperature hydraulic pressure and initial speed of braking. Especially the high braking temperature caused an increase of deceleration and a decrease of braking distance. Moreover the high hydraulic pressure produced a deduction of braking distance and an increase of deceleration. Finally the initial speed of braking directly varied to the braking distance

Project name Scientific Equipment and Service System on WebApplication purpose 1. To develop a tool booking system 2. To evaluate the efficiency of the tool reservation system. 3. To evaluate the satisfaction of the tool reservation system The system has been developed in the form of a web application. To create a database system for storing information of various tools booking information and other information Systematically With the access rights of the system users in 3 parts: the administrator Membership section And parts of general users The tools used for system development are PHP and My SQL. For evaluating the satisfaction of use Scientific Equipment and Service System on WebApplication. The results showed that The overall satisfaction level per system is at a good level. Average total with 4.46. Found that the work efficiency was the first satisfaction With a satisfactory level of satisfaction With an average of 4.51. Secondly is the design of the user system With a high level of satisfaction With an average of 4.47. Secondly the selection of technology in system development has a good level of satisfaction. With a total average of 4.41. In conclusion Scientific Equipment and Service System on WebApplication Can be applied effectively