This paper presents risk assessment of damages for equipments in the building based on IEC standards and ITU-T recommendations. The study of risk assessment of damages for equipment in the building includes of 6 main topics: calculation of frequency of damages due to lightning discharges calculation of risk of damage calculation of risk areas estimation of probability factors consequential damage factor acceptable risk levels and mitigation methods to reduce the influence of power line induction affecting to equipment. Also the implementations of surge protective devices (SPDs) at the entrance of power lines into the building contribute to a further decrement of damage.

This research objective was to design the ginger candy compression machine and determine the efficiency and capacity for saving time and labor in pressing ginger candy for community enterprise groups Pim Malaherb Chiang Rai Province. Ginger candy compression machine consists of the main structure namely the extruder and power transmission systems. The machine was designed with two horsepower motors or 1.5 kilowatts to drive the shaft and to rotate the screw through the flange. This study installs the inverter to control the motor speed at 1000±10 1200±10 and 1400±10 rpm. The extrusion die had an average diameter of 9.7 millimeters. The results found that the motors speed that was suitable for compression was a Rotational speed of 1400±10 rpm. When the speed increased the efficiency and the working rate increased too. The amount of ginger stirred was used at 300 500 600 900 1000 1500 2000 and 3000 grams. The maximum efficiency was 90.85 percent. The efficiency increased with the amount of ginger stirred. The ginger candy compression machines engineering economic analysis results found that the machines operating cost was 18063.6 baht per year. When considering the machines operation at 792 hours per year the payback period was 6 months and 11 days.

HV power distribution system circuit breaker are important devices in substations. Such as Malfunction or deterioration of equipment with in the substation will directing impact on the stability of the power distribution system and affect the reliability of the system. In addition this means that it is necessary to assess the actual condition of the proper condition-based operation and maintenance. Thus this thesis presents condition assessment procedure for equipment by using technical information visual inspection by Weighted Scoring Method. Weighting technique is used to determine important weight testing methods of devices by using Analytic Hierarchy Process (AHP). Testing methods for circuit breaker are such as visual inspection contact timing test. Scoring technique is divided into 1-3 levels by classifying on actual evaluate equipment consisting of consisting of good moderate bad. This thesis proposes a software development in order to organize the database and calculate the analysis of the condition of equipment in 5 HV substations. The evaluation results will be divided into 3 levels good medium and bad condition. According to the evaluation level the maintenance types are separated into 1) regular maintenance 2) increase the frequency of maintenance and monitoring of the test 3) equipment must be improved urgently. Finally abnormal incidents of equipment and cost of HV equipment maintenance can be reduced in effective way.

The purposes of this research were (1) to study the usage behavior of social media for the purpose of reading or viewing beauty products based on blogger recommendations (2) to study factors of blogger recommendations of beauty products (3) to study the behavior of decision making to purchase beauty products based on blogger recommendations (4) to study personal factors and behavior of decision making to purchase beauty products based on blogger recommendations (5) to study the relation between the usage behavior of social media for the purpose of reading or viewing beauty products based on blogger recommendations and the behavior of decision making to purchase beauty products based on blogger recommendations and (5) to study the relation between factors of blogger recommendations of beauty products. 400 persons were included as a sample. The data was gathered by using questionnaires and being analyzed by methods of calculating frequency percentage average standard deviation one-way ANOVA and multiple regression analysis. The results of the research were as follows; Considering the usage behavior of social media for the purpose of reading or viewing beauty products based on blogger recommendations. It was found that most consumers decide to purchase beauty products because of an interesting product presentation and the facial beauty products are the most purchased products by the consumers. In an overall picture the consumers agree with the factors of blogger recommendations of beauty products at a very good level and the factor of blogger is the most agreed factor.

This article aims to synthesize literatures in Educational Robotics and presents key features of systematic literature review and structured meta-analysis of the literature. Population consists of 247 papers from 10 databases ranging from 1996 to 2012. Results show that common problems in Educational Robotics are high cost of tools license and differences in students’ background knowledge. Trends of existing researches focus on development of software and low cost robot training package in order to promote students’ practice in problem-solving skills and teamwork in experience-based learning to enhance self-motivation and experience with real world applications. It was also found from the synthesis that qualitative-based evaluation of tool and learning achievement process was rare even though it is a key factor that indicates quality of learning process.