จำนวน Repository ( 173 )

การศึกษาและพัฒนาเว็บแอพพลิเคชันการจัดการเส้นทางการท่องเที่ยวจังหวัดกาญจนบุรี
การศึกษาและพัฒนาเว็บแอพพลิเคชันการจัดการเส้นทางการท่องเที่ยวจังหวัดกาญจนบุรี

This research aims to research develop and develop a web-based tourism management application in Kanchanaburi province. An Analysis of Opinion Assessment on Educational and Web Application Development for Kanchanaburi Tourism Route Management. Based on the results of the analysis the assessment of feedback on the process factors / procedures used in the system performance factors of the system. Factors of convenience beauty and quality factors of the system. The opinions on satisfaction were at a very good level.

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Experimental investigation of a thermosyphon economizer to recover waste heat in the electronics industry
Experimental investigation of a thermosyphon economizer to recover waste heat in the electronics industry

A case study was conducted to design construct and test a thermosiphon economizer for increasing the temperature of feed water by using waste hot water. The simulation of the thermosiphon economizer (heat exchanger) for the establishment of the optimum size was performed using the thermos-economical method. The thermosyphon was made of a total of 80 copper tubes (outside diam.19.05 mm) with evaporative adiabatic and condensation lengths of 300 10 and 300 mm respectively. The working fluid was R-134a filling ratio was 50% by evaporative volume and the thermosiphon was arranged in a staggered form. In testing performance flow rate of the inlet hot water was set at 10 L/min and the controlled inlet temperature of cold water at 25oC. The average flow rate of the cold water was set at 5 7 and 10 L/min respectively. Results showed that the maximum of rate of heat transfer from the condenser section occurred at the flow rate of the cold water of 10 L/min. When test the inlet temperature of hot water of 4555 and 65 o C were used at the inlet volume flow rate of cold water of 10 L/min maximum heat transfer rates from the condenser 4626 8260 and 8790 W were achieved. Moreover the outlet temperature of the cold water which was initially 25o C changed to 311 34 and 37o C respectively. Therefore increasing the outlet feed water temperature reduced energy consumption. The effectiveness of the thermosiphon economizer with the inlet temperatures of hot water of 45 55 and 65o C was 0.47 0.48 and 0.49 respectively.

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การสื่อสารการตลาดที่มีต่อพฤติกรรมการท่องเที่ยวของนักท่องเที่ยวชาวไทยในพิพิธภัณฑ์ประวัติศาสตร์ในกรุงเทพมหานคร
การสื่อสารการตลาดที่มีต่อพฤติกรรมการท่องเที่ยวของนักท่องเที่ยวชาวไทยในพิพิธภัณฑ์ประวัติศาสตร์ในกรุงเทพมหานคร

This research aims to study the personal factors. Behavior and Marketing Communications on the behavior of the History tour of tourists in Bangkok Thailand. The hybrid research Is Quantitative Research 400 samples. Questionnaires were used to collect data. The statistics used in the analysis were percentage mean standard deviation. Chi-square test the level of statistical significance .05. And Qualitative Research In-depth interviews in finding consensus and conflict between management Museum. Marketers Museum Visitors to the museum and the results of quantitative research. The results showed that: 1) Most of the respondents aged 15-25 years old single female student with a bachelors degree. The average income per person is not more than 7000 baht monthly income of an average family 15000-30000 baht and living in Bangkok. 2) Most of the planned tour. Most holiday weekend. The main objective is to study the first year of the museum tour 1-2 times a tourism model is geared experience. Each tour takes 2-3 hours. 3) Behavioral marketing communications planning travel. Time to travel the main purpose of tourism the number of times in one year tourism model. The level of significance. 05. The results of the research showed. The most consistent hypothesis testing with quantitative research. Keywords : Marketing Communications Travel habits History Museum

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การออกแบบและพัฒนาหุ่นทดสอบการชนรถจักรยานยนต์
การออกแบบและพัฒนาหุ่นทดสอบการชนรถจักรยานยนต์

The purpose of this research is to design and develop dummy (anthropometric test dummy) for motorcycle frontal collision test. The conceptual design of dummy is male aging between 25-55 years old 6 pieces of rib and deformable 76.2 mm. In order to performance test it was classified into 2 testing by static testing and dynamic testing. For static testing the energy absorption behavior between force and deflection or “ static curves” is determined. While dynamic testing is considered to the energy absorption behavior between forces and several velocities or dynamic forcedeformation curves impact acceleration impact force on sternum and injury severity with the relationship of viscous in velocity function. The results of the energy absorption behavior on chest of dummy from static testing the tendency of chest deflection is relatively low during the initial force and suddenly increasing when rise to the critical point. This behavior is similar to the energy absorption of the human chest. Therefore the design features of this test dummy can reflect behavior that is close to the human anatomy. In case of dynamic testing it is discovered the ability of the dummy testing to absorb up to 560 J impact acceleration 3 8 . 4 3 g impact force on sternum 5 . 0 9 4 kN. The viscous in velocity function is 0 . 8 2 5 m/ s which compared to injury severity at AIS3+ ( or higher than serious injury) . Therefore the dummy design in this research project corresponds to the collision test of a motorcycle.

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การออกแบบและพัฒนาชุดขับเคลื่อนในการทดสอบการชนรถจักรยานยนต์
การออกแบบและพัฒนาชุดขับเคลื่อนในการทดสอบการชนรถจักรยานยนต์

A design and development of powertrain module crash test using with the motorcycle crash test is aim to create a special tool for automotive assessment and safety engineering based on the realistic test. In order to main system of power module tester is consisting of powertrain system using electrical motor transferring system using chains and gears and control direction system using dual rails respectively. Based on powertrain module tester performance crashing speed relative angle between target and distance before crash are regarded. Nevertheless the result of testing performance was conducted to statistic hypothesis test by Mean Absolute Deviation: MAD Standard Deviation: SD Mean Square Error: MSE Mean Absolute Percent Error: MAPE and Root Mean Square Error: RMSE. The results of this approach discovered that the crashing speed was the highest error with 96% and the lowest was distance before crash. Furthermore it was corresponding to the statistic hypothesis test. However the result of the error was influence of the rails distance which limit by funding. In case of crash energy the mean of energy was appeared on 10.978 J. Whereas the tendency of variable was similar to polynomial equation.

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