Objectives of this study A Study of Current Image and Desired Image of Rajamangala University of Technology Phra Nakhon Graduates according to Opinion of Entrepreneur were to study and compare viewpoint of employers regarding current image and desired image of students who graduated from Rajamangala University of Technology Phra Nakhon. Survey research methodology was exploited by distributing questionnaires to sample group of 247 employers. Thereafter collected data was analyzed using SPSS for Windows v. 14.0 to fmd frequency percentage standard deviation mean and t-test at statistically significant level of 0.05 for hypothesis testing. The results of this study were as follows: 1.Rajamangala University of Technology Phra Nakhon graduates had current image at high level by good mental health cheerful and happy graduates had highest means value while graduates with knowledge and ability in foreign language had lowest mean value. The result also showed that desired image of graduates were high by good moral and ethic graduates had highest mean value whereas graduates with knowledge and ability in foreign language had lowest mean value. 2.By comparing current image to desired image in employers viewpoint of Rajamangala University of Technology Phra Nakhon Graduates the study found that all images were significantly different at the level of 0.05 except good mental health cheerful and happy graduates.

The objectives of the study were to find the arrival rate of applicants who applied to study at Rajamangala of Technology Pra Nakhon North Bangkok Campus the service rate of admission officers and to analyze queuing system in order to improve the admission system. The sample was 1722 technical students who applied to study in 10 divisions in 2007 and 2008. The plication date was collected every 10 minutes in each one-hour period from 09.00 am. to 16.00 pm. For 6 days. The study found that the distribution of the number of applicants was Poisson distribution. The highest arrival rate 1.29 student/min was at the second period and the lowest arrival rate 0.06 students/min was at the sixth period. The Distribution of service time at each station was exponential distribution. The highest service rate 0.67 min/student or 1.49 students/min was at the second station entering data into a computer. Queuing analysis in this study was series network. The analysis found that the highest expected number of applicants in the system 150 student/hour was at the first station in the second period and in the sixth period there was almost none. The highest expected number of applicants in the queuing system107.40 student/hour was at the first station in the second period The highest expected waiting time in the system.1.92 min/student and in the queuing system 1.37 min/student were at the first station. The probabilities of none of applicants in the system at the first the second and the third station in the sixth period were high 0.97 0.95 and 0.98 respectively. The proper value of the expected number of applicants in the system set in this study was not more than 60 student/hour and not less than 30 student/hour. The proper value of the waiting time in the system was not more than 1 min/student and not less than 0.5 min/student for stations for stations with more than one servers. The analysis found that at the first station one more server should be added in the second the third and the forth period and one less server should be reduced in the sixth period.

Now a day the mostly air condition are use the air for reducing the temperature at the condenser unit. Moreover many dusts are adhering in area of fin coil. From this reason the heart reduction efficiency is decreased and increasing the energy consumption. Thus the aim of this research is to design the finned-tube condenser unit cleaner machine for increasing the heart reduction efficiency. From the results of experiment it found that the finned-tube condenser cleaner machine is desirable when comparing with the performance before used. By the original performance the refrigeration effect coefficient of performance (C.O.P) and energy efficiency ratio (EER) is 34179 Btu/hr 2.62 and 8.9 Btu/hr.Watt. On the other hand the refrigeration effect (C.O.P) and (EER) is 39766 Btu/hr 3.12 and 10.7 BtuIhr.Watt respectively when the condenser unit cleaner machine is used. Based on this condition the value of the refrigeration effect and (EER) are increase to 16.35% and 19.19% respectively. Thus the heart reduction in condensing unit can be aided the performance and prolong the life time of air condition by depending on the cleaning of condensing unit.

The main purpose of the study was to investigate the relation between demographic characteristics mass media exposure knowledge and sexual attitude of the students in Bangkok area. Question aires were used to collect data from a total of 400 samples. The result of the study was as followed: 1. The mass media exposure differs significantly among the sample groups of different sex university and income. 2. The sexual knowledge differs significantly among the sample groups of different sex and university. 3. The sexual attitude differs significantly among the sample groups of different sex university and income. 4. Mass media exposure does not correlate with the sexual knowledge. 5. The sexual knowledge correlates with the sexual attitude.

The purposes of the research were to create and efficiency validation of computer assisted instruction focused on the practice to CNC Tuming of the standard 90 / 90 and analyse the student leaning achievement of the student after by using computer assisted instruction. The subjects in the study were 23 first year diploma students enrolled in Computer Numerical Control Rajamangala of Technology. North Bangkok Campus. The Researcher using the experiment by let the students do until test before class. And then study by using computer assisted instruction focused on practiced to CNC Turning. After that let students do the unit test again at the class and calculate to find out the efficiency of the computer assisted instruction and analyse the leaning achievement of students after study. The research result revealed that the efficiency of the computer assisted Instruction was efficient in standard 90 /90 Moreover after learning achievement At significant level of 0.01 .