The purpose of this research was to study the development of the office of accounting professional services in Thailand with the concept of intellectual capital towards the ASEAN Economic Community. The quality accounting offices were research samples which were representative of quality accounting offices in Thailand that can continue to perform professionally and successfully. Which found that quality accounting offices had applied the concept of intellectual capital It consists of 4 components namely human capital social capital structural capital and spiritual capital. They applied to the operation and management of the quality accounting office If the accounting firms in Thailand have applied the intellectual capital to their accounting firm they will be able to succeed in the accounting profession as well. Therefore based on this research the model for the development of the Office of Professional Accounting offices in Thailand is based on the idea of intellectual capital.

The purpose of this research the study of the potential of Suphanburi area for planting investment. In which the researcher has studied the soil data set that is different in each area of Suphanburi. That is quite diverse if divided by each district in Suphanburi province themselves from the basic information report in Suphanburi and the agricultural information of Suphanburi for the year 2017 when comparing with the soil set of Suphanburi it can be seen that the cultivation is quite comprehensive all. Although there are cultivated plants in Suphanburi farmers must consider the amount of water sufficient for cultivation. Topsoil maintenance in the case of repeated planting of crops in 1 year to obtain quality produce and prices. At times the agricultural market prices dropped. Farmers will have to modify the cultivation to meet the market demand. Or the cultivation of plants by considering the amount of water that is used in the cultivation as well.

The objectives of this research are to study the rate of deterioration of tyre friction coefficient and investigate the quality of new and old tyres that are currently in use. A set of the rolling resistance testing was designed and set up to work with the single dynamometer according to speed 80 km/h tire load 4660 N and inflation pressure 30 psi. There were three tire samples new tire one year used tire and two year used tire to find the rolling resistance coefficients. The finding shows that the rolling resistance was inverse variation with tire aging. For instance the new tire (1st sample) had the highest rolling resistance on the other hand the two year used tire (3th sample) had the lowest rolling resistance. Moreover the rolling resistance coefficients were inverses variation with tire aging. Besides the one year used tire had the average of the decreasing rate of the rolling resistance coefficient at 0.03689 N/kN per a week while the two year had the average of the decreasing rate of the rolling resistance coefficient at 0.03671 N/kN per a week. Furthermore the result also revealed that the rolling resistance coefficients nonlinearly decreased comparing to the tire aging.

Continuing Professional Development for Engineers is any structured process or activity that enhances the competence and quality of a person necessary to perform a professional job. The continuing engineering profession is a useful tool for professionals. The objectives of the research is to find a short course approach for the continuous development of the engineering profession to meet the needs of industrial engineers in the current era to have knowledge and ability in technology continuously it is important that all engineers have to attend training to enhance their knowledge. Which the development of the knowledge of the engineer As part of the promotion of license for professional practice at the ordinary level and degree engineer Including the registration as an ASEAN Engineer and APEC Engineer.

The study of the efficiency of fuel consumption by adjusting the fuel injection pressure is basically one optimization method to maximize the engine combustion. In this current study the Honda wave 110 cc. engine has been used to test in particular the fuel injection by adjusting the pressure of injector. To control the pressure of injection was made by automatic valve injectors with three different pneumatic pressure which were 2 2.5 and 3 bars respectively and the similar running distance of 5km. The results showed that at 2 bars the obtained fuel saving was 1020.68 km/L and the speed at 25.23 km/h which corresponded to the highest CO2 emissions during the engine combustion.