This research proposes the variance estimation method of Pareto data and to compare three variance estimation methods. Those methods are simple method the adjusted variance method with term (n - 1)/n and the adjusted variance method with term (n - 2)/n. The research was considered by the absolute of bias (|Bias|) the mean absolute errors (MAE) and the mean square errors (MSE) of variance estimator. This research used Monte Carlo Simulation method. Results of this research show that the |Bias| of simple method is the lowest for almost all conditions. We can arrange the methods as follows: the adjusted variance method with term (n - 1)/n and the adjusted variance method with term (n - 2)/n respectively. For all situations the MAE and MSE the of adjusted variance method with term (n - 2)/n is the lowest. We can arrange the methods as follows: the adjusted variance method with term (n - 1)/n and simple method respectively.

Bifurcation diagram is an important mathematical tool for the analysis of ferroresonance in the electrical power system. Bifurcation diagram can clearly present the behaviors of the nonlinear system. The general method for the generation of steady state bifurcation diagram is based on Ordinary Differential Equation (ODE) of the simplified single-phase circuit and the continuation technique. This paper proposes the application of PSCAD/EMTDC simulation program and the bruteforce technique to generate time response of the three-phase power system. A new device tool “Multiple Poincaré Map” is created and used with File Read and XY Plot to produce bifurcation di agrams with respect to changes of controlled parameters. Two examples related to ferroresonances in the distribution systems are presented. Bifurcation diagrams generated with the PSCAD/EMTDC and Multiple Poincaré Map confirm that the results from the simulation are in good agreement with the results from field tests.

The article is aimed to study of outcome on student loan and study motive background (gender provinces amount of siblings parent education parent career family Measurement and method are studied from documents and questionnaire. The result show that student loan administration fix toohigh families income of students. 2) lack of the ckecklists in allocation. 3) lack to the payment back to student loan. 4) lack of the follow-up and evaluation The satisfaction of higher education students on student loan according to gender provinces amount of siblings parent career family income is not significantly different except parent education is significantly different at 0.01.

The objective of research is to study the problems knowledge attitude and practice The relationship of knowledge and attitudes and the relationship of the attitude and practice. The population is 117 staff of Faculty of Business Administration and Liberal Arts.117 The questionnaire is to used as an instrument. Data analysis included Frequency Percentage Mean Standard Deviation and Correlation Coefficient. It was found that the problems was at a high level the knowledge was at a medium level. Additionally they mostly had a positive attitude. Finally in practice it was averagely rated at a high level. The study showed the knowledge did not relate to the attitude and the attitude related to the practice of the quality assurance system as well. The correlation coefficient was .095 and .480 respectively and were significant at the .01 level.

The purposes of this research were to study process factors and patterns of strategy regulation for children and youths of local administrations in Lampang and Chiang Rai Provinces. The study revealed that most of local administrations lacked of analyzing analyze current situation problems and need evaluation. The research also revealed that the factors affecting the success of children and youth development strategies were the organization vision leadership knowledge ability and experience of the executives planning organizing personnel management budget and follow-up system and the outer factors were governmental policies supports from institutes in budget and expertise and participation especially of children and youth