The purposes of this research were (1) to study and (2) to rank the needs of RMUTP environment management on undergraduate students’ learning development as well as (3) to present a proposed guideline to improve RMUTP environment. 343 students enrolling in the first semester of the academic year 2015 were selected with simple random sampling. The research tool was questionnaire. The data were analyzed through percentage (%) mean ( ) standard deviation (S.D) t-test modified priority needs index: PNI modified and content analysis. The results demonstrated that: (1) The overall mean scores of the reality and expectation of RMUTP environment on students’ learning are statistically different at 0.01. (2) The physical environment needs for supporting students’ quality of life was ranked the first. The second was university facilities to enhance their learning and the third was help and information service. The curriculum management was ranked the fourth. The last one was instructors. (3) A students’ proposed guideline: 3.1 As for physical environment needs for supporting students’ quality of life the highest was more relaxing space. 3.2 As for university facilities to enhance their learning the highest was that learning equipments should be adequate for them. 3.3 As for help and information service public relation and university information for students should be improved at a high level. 3.4 As for curriculum management the study suggested students’ needs for curriculum development to meet current employment demand and to implement effectively at the workplaces. 3.5 As for instructors the highest rank was that instructors ought to understand and listen to students’ needs. They should let students express their opinions.

This thesis presents an assessment of voltage sags when faults are happened in the 115 kV transmission line of the Provincial Electricity Authority (PEA) when distributed generation (DG) is installed in the system. The computer program PSCAD/EMTDC (Power Systems Computer Aided Design / Electromagnetic Transient in DC system) version 4.2 is applied to provide electrical parameters for the modeling and simulation and to analyze the fault occurred which resulted in voltage sag. Test results from PSCAD/EMTDC show the values of voltage sag when 5 types of fault are occurred (Single Line to Ground Fault Double Line to Ground Fault Three Phase to Ground Fault Line to Fault and Three Phase Fault). For all cases the value of root mean square voltage before fault is 100% or 1.0 pu. It can be seen that for both radial line and closed circuit when DG are installed in the system the value of phase to ground RMS residual voltage and phase to phase RMS residual voltage at the bus of Bang-pa-in 2 substation are more than the values in case of the system without DG.

This research aims for study 1) the relationship of market opportunity for Thai SMEs herbal cosmetics in elderly market that effect to marketing strategies for Thai SMEs herbal cosmetics in elderly market 2) the relationship of marketing strategies of Thai- local- wisdom SMEs herbal cosmetics that effect to marketing mixed of Thai SMEs herbal cosmetics for elderly market 3) the analysis of market opportunity in Thai SMEs herbal cosmetics that effect to marketing strategies and marketing mixed in Thai SMEs elderly market. Samplings were randomly done within population of Bangkok metropolitan while calculated under Taro Yamane (1967) methodology upon 10014705 elderly with 402 samples were drawn and conducted using survey technique. Data collecting using questionnaires which was analyzed by SPSS in frequency percentage mean standard deviation distribution and perform analyzing by ANOVA and MCA. RESULTS The outcomes of their relationship between independent and dependent variables are market opportunity is related to SMEs objective in moderate range. Market opportunity is related to marketing strategies in moderate range and SMEs objective is related to marketing strategies in low range. Market opportunity is related to marketing mixed in low range and SMEs objective is related to marketing mixed in moderate range more over marketing strategies is related to marketing mixed in moderate level as well.

For this work PM10 were collected from 7 stations within the area of North Phra Nakhon campus Rajamangala University of Technology Phra Nakhon Thailand. The samples were collected within 24 hours from January to April 2015. The result shows that the concentrations of PM10 values are in the range of 0.06 - 0.16 mg/m3 and average PM10 of 0.09 mg/m3. The maximum PM10 were found in front of the university. The comparison of maximum PM10 with the standard value of Pollution Control Department (PCD) was slightly over but did not affect human health.

This study is to determine guideline to reduce carbon footprint for organization of medium and small hotels in Thailand using the Carbon Footprint for Organization (CFO) according to Thailand Greenhouse Gas Management Organization (Public Organization). Conducting with 2 represented medium and small hotels the results showed that the overall carbon footprint average of 2013 was 553t.Co2-e. Considering concentration index by number of guestrooms the carbon footprint was 18.81 kg.Co2e/room-night 221.16 kg.Co2-e/m2 by total floor area and 11.65kg.Co2- e/personby guest. The dominant source of carbon footprint was use of electricity 465t.Co2-e(83.06%). Base on this assessment to use of air conditioning was 60.09 % water heater 17.64 % lighting equipment 15.05 % and other 7.22 % of total electricity used. Therefore guidelines for carbon footprint reducing of the representative hotel were to use technology to reduce electricity consumption for air conditioning water heater and lighting respectively. Based Approach to Reducing Carbon Footprint found that small and medium sized hotels can reduce emissions per year 24.87 t.CO2-e representing the ability to reduce greenhouse gas emissions by up to 4.49% or financial projections be able to save money 171.202 baht per year.