จำนวน Repository ( 720 )
การพัฒนาแบบจำลองและการพยากรณ์ดัชนีรังสีอัลตราไวโอเลตรายชั่วโมง โดยใช้โครงข่ายประสาทเทียมในจังหวัดสงขลา
In this work solar erythemal ultraviolet radiation (EUV) which affects human skin and skin cancer was investigated at Songkhla province (7.2°N 100.6°E). EUV was converted to UV index then the data was used for model development and forecasting of hourly UV index using Artificial Neural Network (ANN). The ANN model has one input layer two hidden layers and one output layer. This input layer consists of extraterrestrial erythemal ultraviolet radiation solar zenith angle aerosol optical depth and cloud index which affect ultraviolet radiation and the output layer is hourly UV index. The results show that hourly UV index obtained from ANN and that from the measurement are in reasonable agreement with root mean square difference of 12.8% and mean bias difference of -2.4%. For forecasting of the hourly UV index the data for 7 days earlier was used for forecasting the next UV index for one day or nine-hour (08:00 am.-16:00 pm.). Multi-layer perceptron and back propagation algorithm were used in the model forecasting. The results show that the UV index from the model forecasting is reasonable agrees with UV index from measurement with root mean square difference of 17.0% and mean bias difference of 0.3%.
ลักษณะวัสดุผสมซีเมนต์เพสต์กับเถ้าเส้นใยผลตาลโตนดใส่ท่อนาโนคาร์บอนผนังชั้นเดียวชนิดสั้นผ่านการปรับปรุงผิวภายนอกด้วยกระบวนการชุบผิวโดยไม่ใช้ไฟฟ้า
This research was resulted of the characterization of cement paste composites (CPC) blended with palmyra fiber ash and surface-treated on short SWNT prepared by an electroless plating process. The cement paste composites included cement 270 meshes of palmyra fiber ash and short SWNT. The design of experiment was divided into 3 conditions namely uncuring 28 and 56 days in distilled water. The properties of CPC were carried out in chemical composition physical mechanical mineral phase microstructure and statistical analysis. It was found that in the chemical compositions an amount of silicon dioxide aluminium oxide and ferric oxide were 51.53% which was rated in class C. The bulk densities of CPC series between PFA10 (C) and PFA5AgSWNT0.01 (G) cured 56-day distilled water were an increased 38%. Then the highest specific electrical resistivity of CPC series PFA5OSWNT0.03 (F) cured 56-day distilled water was 1.14±0.31 mega-ohm.mm. The highest compressive strength of CPC series PFA5AgSWNT0.01 (G) cured at 28-day distilled water was 25.45±2.00 MPa compared with the OPC (A) was an increased 5%. Which the bulk densities of CPC series between PFA10 (C) and PFA5AgSWNT0.01 (G) were statistical analyzed the mostly cured at significant difference α = 0.05. In addition CPC series PFA5AgSWNT0.01 (G) mainly contained calcite portlandite quartz dolomite and ettringite were caused increasing compressive strength. And the SEM microphotograph were also displayed the calcium silicate hydrate portlandite and ettringite. Consequently the PFA was used to ability pozzolanic material using for lightweight concrete of CPC.
การเปลี่ยนแปลงองค์กรที่ส่งผลต่อพฤติกรรมการทำงานของบุคลากรองค์กรไม่แสวงหากำไร
This study purpose was to investigate the changes affecting the working behavior of non-profit organization personnel. The population used in this study was 64106 non-profit organization personnel: Foundations and associations. The data was collected using a questionnaire from 203 non-profit organization personnel. Statistical multiple regression analysis was used to test the study hypothesis. The study results revealed that there is a correlation between organizational changes including the attitude change change in corporate culture technology change and changes in organizational structure and the working behavior of the personnel of the non-profit organization as a whole including the aspect of helping others consideration for others patience sense of duty and cooperation with the statistical significance at 0.01 level.
การบริหารสินค้าคงคลังด้วยระบบโลจิสติกส์ ที่ส่งผลกระทบต่อผลการดำเนินงานของ องค์กร(BSC)และความยั่งยืนขององค์กรในอุตสาหกรรมชิ้นส่วนยานยนต์
The objectives of this study were to investigate inventory management with logistics systems affecting balanced scorecard (BSC) and to study the balanced scorecard (BSC) affecting organizational sustainability. The population used in this study was under the supervision of the Thai Auto Parts Manufacturers Association. A questionnaire was used as a research instrument for collecting data from accounting executives accounting staff and other related line staff. Data were analyzed using descriptive statistics such as mean standard deviation and percentage and inferential statistics including Pearsons Correlation Coefficient and Multiple Regression Analysis. The major findings indicated that 1) Inventory management with a logistic system positively effected operating results. 2) The performance of the organization had a positive effect on the sustainability of the organization. The study showed that agencies or organizations that rely on inventory storage manage their warehouses better when the logistics system plays a role in managing various systems within the warehouse. Organizations do not have to store excess inventory resulting in liquidity. Reduced Inventory costs also result in lower total costs. The selling price can be set lower than the competitors. Businesses earn more profits which positively affects the balanced scorecard (BSC) in all four organization perspectives. When the balanced scorecard (BSC) continues to improve the organization will grow sustainably.
ความรู้ความเข้าใจ แรงจูงใจและความผูกพันต่อองค์กรที่ส่งผลต่อประสิทธิภาพการปฏิบัติงานของนักบัญชี
The objective of this independent study was to investigate knowledge and understanding motivation and organizational commitment affecting the efficiency in work performance of accountants and to study the motivation in performance that affects the commitment of the accountants’ organization. The Population in the study was 255 accountants working in accounting services firms registered with the Department of Business Development. A questionnaire was used to collect data. Descriptive statistics were used for data analysis i.e. frequency percentage mean standard deviation Pearson’s correlation coefficient and multi regression analysis. The major findings indicated that 1) knowledge understanding and motivation affected the efficiency in work performance of accountants as a whole at the statistical significance level of 0.01. When considering each aspect the study shows that knowledge understanding and motivation affected the efficiency in work performance concerning quality quantity time and expenses at the statistical significance level of 0.01 The organizational commitment affected the efficiency performance in terms of expenses with the statistical significance level of 0.05 and 2) Work motivation positively correlated with the organizational commitment of accountants with statistical significance level of 0.01.