The Research about Register and pay tuition fees through the application System Case study: Rajamangala University of Technology Phra Nakhon. The purposes of this study were to study the needs of the system to register and pay tuition through application and to study the expectations of students the performance of your system to register and pay tuition through application of Rajamangala University of Technology Phra Nakhon. This research is a qualitative research. Researchers were collected qualitative data to study the expectations of students to register and pay tuition through application. The samples use in to study consisted of 400 people. The procedures and methods of operation and the data were collected by questionnaire to a sample to determine the expectation of student registration and payment of fees through the application of Rajamangala University of Technology Phra Nakhon and the statistical analysis using computer processing program. The study found that the majority were female. The majority of respondents are 4th year students and 2nd year transfer. Frequency of using the registration service more than five times. Most students have used mobile money transfer service through the application. Students have a need for the university to create a registration application system. Most respondents had expectations and expectations about the registration and payment system through the application system. The design and utilization are at a high level. There is a need for a systematic change in enrollment in digital university. There should also be an agency or system that can assist or talk through the various channels throughout the use of the registration system through the application.

Defrosting at evaporator panel is one of working cycles in freezer. Power consumption in defrosting does not meet the objective of using freezer therefore the approach to decrease power consumption in defrosting is one strategy for energy saving. Normally the cycle of defrosting in freezer is a constant time that specify by referring to the highest humidity period. With this control concept the problem of temperature exchange is not occurred from ice accumulation at evaporator panel but it makes the over necessity of defrosting process in the low humidity season and cause the unnecessary power usage in freezer. This thesis presents the control approach for defrosting by using the difference of the temperature at evaporator and the temperature at chilling area. By using this approach the defrosting process is operated depend on load and the fan is on or off relate to defrosting time. Test results demonstrate that about 12% of power can be saved by this control approach when compared to constant time control.

This thesis presents the combined loss reduction approach to apply in distribution system. The thesis objective reduces the loss in the distribution system when all voltage magnitude levels at connection points must under the limits. Therefore the Simulated Annealing Technical selects as searching tool to find the suitable location of DG and Capacitor. The propose technique applies to the distribution system 69 buses model. The results shown that this technique can reduce in power losses from properly organize the location of DG and Capacitor. Moreover it can also balance and increase the voltage levels. The propose Simulated Annealing Technical is used to determine and organize the sectionalizing and tie switches in the feeder which installs DG and Capacitor by considering the power losses and the number of time to change the status of disconnecting switches.

The objectives of the study were to develop online article submission system of the Journal of Mass Communication Technology RMUTP and assess the appropriateness of then online article submission system of the Journal of Mass Communication Technology RMUTP. The program used to develop online article submission system using WordPress. The data was collected from a sample of 30 users who was evaluation the system. Data was analyzed by mean and standard deviation (S.D.). The results showed as follows: online article submission system of the Journal of Mass Communication Technology RMUTP was appropriate at a high level.

A simple flow injection analytical system for an automatic determination of phosphate in water samples using the molybdenum blue method was developed. Samples were injected and mixed with ascorbic acid used as a reducing agent. The absorbance of the resulting molybdenum blue complex was measured at 880 nm by a spectrophotometer. The optimal conditions of this system were 2 mL/min of carrier flow rate 1000 μL of sample volume 60 centimeters of mixing tube length and 0.020 mol/L of ascorbic acid. The proposed method showed reliability high sensitivity spend small amount of reagents and samples and fast sample throughput (52 samples/hour). The limit of detection (LOD) was 0.015 mg P/L of phosphate. Precision obtained injecting a phosphate standard solution of 0.50 mg P/L (n=10) was 1.81%. This system can be applied to determination of phosphate content in surface water samples in Lopburi province by comparing with a standard method. It was found that obtained from the developed system agreed well with the standard method using the pair t-test (tstat 0.04 < tcrit 2.36). This flow injection analysis system has no effect from arsenate and silicate interference for the analysis of natural water samples.