This thesis presents the design and construction of an experiments of the power flow in the power systems. For the operating system of the power flow in the power systems. Comprise with the real power Reactive power Voltage in the power system. To guide the planning and operation of power systems. The results of the experiment to calculate the pressure at various points in the Power loss of system. As well as finding solutions to problems. Occurring in the system such as under voltage or short circuit in the system. This is the basic of stability analysis of power system operation and planning

ECONOMICS VALUE ANALYSIS OF INVESTMENT POLYCYSTALLINE DIAMOND(PCD) CUTTING TOOLS BRAZING. The objective was to study the possible economic investment welding vacuum (High Vacuum Brazing Machine) Case Study JK Precision Seasons Ltd. to produce inserts with diamonds (Diamond Insert) and quality. reduce the cost of production The experiment storage costs during the production process inserts with diamond original method and process used welding machines vacuum (High Vacuum Brazing Machine) by the project matures in 10 years the life cycle of the equipment by the companys accounts. it can be concluded that the project Investment welding machines vacuum (High Vacuum Brazing Machine) is worth the investment. By comparison the production cost of current methods and using new welding machines vacuum (High Vacuum Brazing Machine) found that the cost of production when using welding machines vacuum (High Vacuum Brazing Machine) down 31 baht / piece the production process. down two steps and increased productivity in a new way. 72413 pieces / year When analyzing the cost of Economics found that the value equivalent’ contaminated current net (Net Present Value) Payback period (Payback Period) rate of return of the Project (Internal rate of Return) Previous year current net’ Baht 443902559 Baht rate of return of the project is the of 3172% summarized the’ value. The project studies the possible invest welding vacuum (High vacuum Brazing machine) is suitable for investment.

The objective of research was to study and analysis the Electric vehicle structure of Rajamangala University of Technology Phra Nakhon. The Electric vehicle designed to save energy protect environment and cognitive development of student by used the computer software help in the design Material selection Finite Element Analysis Appropriability of the Electric Vehicle Structure and di s p l a c e m e n t of the vehicle structure by using the computer program help in the calculation for the Finite Element Method including to the development of engineering skill. The research must to create the Electric vehicle prototype to suitable and the structure have lightweight and strong for the electric vehicle and focuses on energy efficiency and the material of structure used steel pipe. This research can use to other working structure and future vehicle in sustainable. The vehicle has two seats Capable of running speed to 0-80 km/h the weight at the vehicle structure not over 1 0 0 kg. And the material of structure used steel pipe. This researching can use to other working structure and future vehicle in the sustainable.

Freight is major source of income of the State Railway of Thailand (SRT); which had revenues of one billion baht a year. The development of freight by rail system to be fart punctual and safe is important. Knuckle pin serves tension and shear stress in pulling Rolling Stock. Strength testing of Knuckle pin must be done by technical and engineering knowledge. SRT has 6000 Rolling Stocks; that means 6000 Knuckle Pin has been used and it is likely to increase due to the construction of the Double Track Project and the purchase of new Rolling Stocks. The efficient Knuckle Pin prolongs lifespan and SRT would have benefit on saving cost of maintenance and increase safety in the transportation of goods. This research is aimed at creating the understanding about the quality of the Knuckle Pin modeled Nat Mall. The pin would be test by Standard Test Methods for Tension Testing of Metallic Materialsand the Standard Test Method for Analysis of Carbon and Low-Alloy Steel by Spark Atomic Emission Spectrometry and Hardness Testing Machine and Microstructureto determine the cause of pin’s damage. This study will contribute the standardization of the quality of the Knuckle Pin which is used in Rolling Stocks of SRT.

This research was aimed at analyzing the content and method of communication the embedded in ecotourism promoting media produced by the concerned agencies in Suphanburi province utilizing semiotics and concepts concerning tourism along with the indepth analysis on the phenomena in the areas under study as the research framework. The researchers focused on analyzing the meaning of signs apparent in the 5 types of media chosen as the study objects. The findings reveal that the contents embedded in the tourism promoting media had contained 2 main factors – variety of tourist attractions and agricultural way of life. Both were related to tourism in an interesting way particularly the use of media for publicizing tourist attractions. Communicative methods apparent in the tourism promoting media came up in 4 modes – paradigmatic communication resulting from using small parts to simultaneously communicate metonymic communication using certain part to represent the whole binary opposition to communicate the meaning of two exclusively different things and intertextualitybased communication through which the cues of old signs were used to build up value in the new context.