จำนวน Repository ( 82 )
อิทธิพลของการบริหารจัดการความยั่งยืนด้านสิ่งแวดล้อมสังคมและการกำกับดูแลกิจการต่อการบริหารการเงินอย่างยั่งยืนของบริษัทจดทะเบียนในตลาดหลักทรัพย์แห่งประเทศไทย
This research aims to study the influences of sustainability management of environmental social and governance on sustainable corporate finance of the listed companies in the Stock Exchange of Thailand including 1) the listed companies which have been selected to continuously get the Thailand Sustainability Investment award all of 29 companies and 2) the listed companies which have been selected to discontinuously get the Thailand Sustainability Investment award all of 17 companies for 6 years from 2015 to 2018. This research is the mixed method research in both the Quantitative Research by using Descriptive Statistic Analysis Comparison of means Analysis Correlation Coefficient Analysis and Panel Data Regression Analysis with Hausman Test and the Qualitative Research by in-depth interview with 5 persons of the management of the Thailand Sustainability Investment awarded companies. The research results revealed that in continued Thailand Sustainability Investment awarded companies the sustainability management of Environmental has negatively statistically significantly influenced the sustainable corporate finance by making Debt to Assets (DAR) to decrease and positively statistically significantly influenced it by making Market Value (TBQ) Return on Equity (ROE) and Return on Assets (ROA) to increase. In discontinued Thailand Sustainability Investment awarded companies it found that the sustainability management of Social has negatively statistically significantly influenced sustainable finance by making Debt to Assets (DAR) to decrease and the sustainability management of governance has positively statistically significantly influenced sustainable corporate finance by making Market Value (TBQ) Return on Assets (ROA) and Return on Equity (ROE) to increase.
การวิเคราะห์พารามิเตอร์ที่มีผลกระทบต่อความสามารถในการต้านทานของการเจะทะลุของกระสุนบนผิวเกราะอะลูมิเนียมด้วยระเบียบวิธีไฟไนต์เอลิเมนต์
This research analyzes the parameters affecting the penetrating resistance of shells on the armor surface by the finite element method. In this study the results were compared with real bulletproof armor firing tests and finite element simulations. modeling of bulletproof armor using Solid Works program. Creating and simulating armor firing pattern using ANSYS Explicit Dynamic program. damage test is based on National Institute of Justice level 3 standards with material of the ammunition is 7.62 mm tungsten carbide (WC) and speed 847 + 9.1m/s. there are two types of bulletproof armor used in this simulation 1. SKD11 2. Aluminum AL7075. The simulations is into 1 category Simulation of stacked armor plates. The sizes of the armor plates are 6 8 and 10 mm and the angles of firing of bulletproof armor are 0 30 and 45 degrees. result of this simulation armor thickness and firing angle are factors of penetration resistance. when the angle of the projectile is tilted it will cause the projectile to deflect reducing the frictional contact from the impact.
การเปรียบเทียบความสามารถการดูดซับพลังงานจากวัสดุ PZT จากการจำลองการทำงานเครื่องจักร
The purpose of the research is to devise and implement for testing the ability to absorb energy from vibration. The results are obtained from simulating the operating status of small machines. In order to get the mechanical force from the vibrating of the machine by using piezoelectric materials (PZT) It was found that the size of the piezoelectric materials used in each condition affected the energy absorption. There are variables interested in different diameters at 27 and 35 millimeters. The result shows that the dielectric displacement is directly proportional to the force used but is inversely proportional to the size of the cross-sectional area of the piezoelectric material. In addition the ability to absorb energy in one second is 4.51 volts and has a maximum energy of 7.4 x10 -8joules.
ความสามารถในการดัดขึ้นรูปและกลไกความเสียหายของโลหะแผ่นอลูมิเนียม AA6016
Aluminium alloys was used in the automotive parts industry increased for compensate steel parts material due to its lightweight and good surface. Since aluminium alloys are there relatively low mechanical properties although they can be deformed easily but the major limitation is their low formability. Especially the less bending radius which is often bending surface damaged easily. In the present work five-difference ratio of sheet thickness and bending radius for study to the bendability of cold rolled aluminum alloys AA6016 at low bending radius. The bending test by Air-bending method according to ISO 7438: 2010. To compare the results every 15 degrees. The mechanical behaviour surface roughness microstructure and damage evolution in the fillet region were analysed by experimental research. The experiment clearly showed that the Spring-back angle and bendability tend to decrease as the bending angle and material thickness increase. Due to the high tensile stress on the bending surface it effected to the surface roughness increases rapidly and led to the damage on the specimen bending surface. The initial cracks occur on the middle of the outer surface curvature and propagation in the shear plane pattern to the middle of the sheet thickness along the grain boundary. This is the consequence of plastic deformation by bending test.
ความสัมพันธ์ระหว่างการกำกับดูแลกิจการและความรับผิดชอบต่อสังคมกับความสามารถในการทำกำไรของบริษัทจดทะเบียนในตลาดหลักทรัพย์แห่งประเทศไทย กลุ่มเกษตรและอุตสาหกรรมอาหาร
This research aimed to study the relationship between Corporate Governance Social Responsibility and Profitability of 56 companies related to the agriculture and food industry and listed on the Stock Exchange of Thailand. Data was collected for 2015 to 2020 and analyzed using descriptive statistics such as frequency percentage mean and standard deviation. Likewise this research also used inferential statistics including Pearson’s Correlation Analysis and Multiple Regression Analysis. The findings were Corporate Governance; Proportion of Independent Director (PID) had positively correlated with Profitability including the Return on Total Assets (ROA) the Return on Equity (ROE) and the Gross Profit Margin (GPM). The correlations were statistically significant at 0.01 and 0.05 levels. Besides Corporate Social Responsibility; the Environmental Social and Governance (ESG) and the Disclosure of Corporate Social Responsibility Activity (DCSRA) had also positively correlated with Profitability including the Return on Total Assets (ROA) the Return on Equity (ROE) and the Gross Profit Margin (GPM). The correlations were statistically significant at 0.01 and 0.05 levels.