2,143 research outputs found
The influence of CEO characteristics on corporate environmental performance of SMEs: Evidence from Vietnamese SMEs
Drawing on upper echelon theory, this study investigates the impact of CEOs’ (chief executive officers) demographic characteristics on corporate environmental performance (CEP) in small and medium-sized enterprises (SMEs). We hypothesized that CEO characteristics, including gender, age, basic educational level, professional educational level, political connection, and ethnicity, affect SMEs’ environmental performance. Using the cross-sectional data analysis of 810 Vietnamese SMEs, this study provides evidence that female CEOs and CEOs’ educational level (both basic and professional) are positively related to the probability of CEP. We also find that based on the role of institutional environment on CEP, political connections had a negative effect on CEP in the context of Vietnam. Another finding is that SMEs with chief executives from ethnic minority groups show a higher level of the probability of corporate environmental performance than companies operated by Kinh chief executives. Since CEP is an essential dimension of corporate social responsibility, a strategic decision for SMEs, it is crucial for the company to select appropriate CEOs based on their demographic characteristic
The Relationship Between State Effectiveness And State Legitimacy: A Quantitative Test
Legitimacy is a contested concept in political science. The question of legitimacy has been addressed in various topics, including state formation, state building, and state failure. This research is an attempt to quantitatively test the relationship between state legitimacy and state effectiveness and development in the economy, politics, and society. By examining the literature on legitimacy and its sources, the research tests the following hypothesis: a state with better performance in macro issues, including economic performance, social welfare, and political participation, is more likely to enjoy a higher level of legitimacy. In other words, this study attempts to establish a replicable formula for an incumbent state to achieve and sustain its legitimacy
Formation, Concept Development in Pedagogical Environment and Educational Solutions to Improve Conceptualization for Vietnamese Students
Concepts are both the result of the reflection of the human objective world, and the reasoning means for people to continue to perceive and improve the world. Concept is the first stage in the process of perceiving human reason. Comprehending the concept, in order to be effective, requires a lot of effort and effort of the subject of awareness, needs to have a certain understanding of the law of perception, the law of psychophysiology ... and the help of people. ahead. Keywords: Concept formation, Concept development, pedagogical environment, Comprehension improvement solution, Concept. DOI: 10.7176/JEP/12-10-06 Publication date: April 30th 202
Employee Volunteer Program in the Eyes of College Students
The purpose of this study is to understand University of New Hampshire (UNH) students’ opinions about Employee Volunteer Program (EVP), especially what value they place upon EVP and what they are looking for in an ideal EVP. Based on the background and context of EVP among Millennials recently, the paper raises questions about EVP’s value to students generally and how factors like past volunteering experience, gender, and occupation/majors impact students’ valuation of EVP. Data collected from this research leads to several conclusions. Although many students do not fully understand EVP, most of them have positive opinions of the program, leaving great potential for employers’ education and recruiting messages transmission. It also suggests some potential areas for further study and recommendations to employers regarding EVP as a tool to attract top talent and keep employees engaged
MICROSTRUCTURAL CHARACTERIZATION OF ULTRASONIC IMPACT TREATED AL-MG ALLOY
Aluminum 5456-H116 has high as-welded strength, is formable, and highly corrosion resistant, however, it can become sensitized when exposed to elevated temperatures for a prolonged time. Sensitization results in the formation of a continuous β phase at the grain boundaries that is anodic to the matrix. Thus the grain boundaries become susceptible to stress corrosion cracking (SCC) and intergranular corrosion cracking (IGC). Cracking issues on aluminum superstructures have prompted the use of a severe plastic deformation processes, such as ultrasonic impact treatment (UIT), to improve SCC resistance. This study correlated the effects of UIT on the properties of 5456-H116 alloy to the microstructural evolution of the alloy and helped develop a fundamental understanding of the mechanisms that cause the microstructural evolution.
Ultrasonic impact treatment produces a deformed layer at the surface ~ 10 to 18 µm thick that is characterized by micro-cracks, tears, and voids. Ultrasonic impact treatment results in grain refinement within the deformation layer and extending below the deformed layer. The microstructure exhibits weak crystallographic texture with larger fraction of high angle grain boundaries.
Nanocrystalline grains within the deformation layer vary in size from 2 to 200 nm in diameter and exhibit curved or wavy grain boundaries. The nanocrystalline grains are thermally stable up to 300°C. Above 300°C, grain growth occurs with an activation energy of ~ 32 kJ/mol. Below the deformation layer, the microstructure is characterized by submicron grains, complex structure of dislocations, sub-boundaries, and Moiré fringes depicting overlapping grains. The deformation layer does not exhibit the presence of a continuous β phase, however below the deformation layer; a continuous β phase along the grain boundaries is present.
In general the highest hardness and yield strength is at the UIT surface which is attributed to the formation of nanocrystalline grains. Although the highest hardness and yield strength was observed at the UIT surface, the results were mixed with some lower values. The lower hardness and yield strength values at the UIT surface are attributed to the voids and micro cracking/micro voids observed in the deformation layer. The fracture mode was transgranular ductile fracture with micro void coalescence and dimples. Both UIT and untreated material exhibit similar levels of intergranular corrosion susceptibility. Corrosive attack was intergranular with slightly deeper attack in the untreated material.
Numerical simulation modeling showed that the calculated residual stress under the tool, ~80 MPa, is of the same order of magnitude as the compressive residual stresses measured by XRD measurements near the surface. Modeling also showed that high effective strains were induced almost immediately. The UIT process also resulted in rapid localized heating to a maximum temperature of ~32°C during the first eleven pin tool cycles. The model also showed that during UIT processing, the material undulates as the pin tool impacts and retracts from the surface of the material. The undulations represent the elastic response of the surface to the compressive stresses built up during a pin tool cycle
Improving Gifted and Talented Education in Arkansas: Identification, Academic Benefits, and Local Norms
In the United States, education policies differ from state to state. Local research, therefore, is important to inform educators, policymakers, and researchers on the ground. This dissertation leverages ten years of administrative data to study three questions about gifted and talented (G/T) identification and education in Arkansas: does the current system identify the right students? Are gifted and talented programs beneficial for students? And, how can we improve diversity in gifted and talented education? Leveraging logistic regression, mixed-effects models, and descriptive statistics, I sought to provide answers to these three questions. First, are academically ready students from low-income families being missed in the current gifted and talented education system? Second, do gifted and talented services benefit high aptitude students academically? And finally, does using the local norm approach necessarily improve diversity in the G/T pool of students? This study has important implications for Arkansas’s G/T identification and education policies
The Today Tendency of Sentiment Classification
Sentiment classification has already been studied for many years because it has had many crucial contributions to many different fields in everyday life, such as in political activities, commodity production, and commercial activities. There have been many kinds of the sentiment analysis such as machine learning approaches, lexicon-based approaches, etc., for many years. The today tendency of the sentiment classification is as follows: (1) Processing many big data sets with shortening execution times (2) Having a high accuracy (3) Integrating flexibly and easily into many small machines or many different approaches. We will present each category in more details
ATMOSPHERIC PARTICLES IN HOCHIMINH SIZE DISTRIBUTION OF WATER-SOLUBLE INORGANIC IONS
Joint Research on Environmental Science and Technology for the Eart
- …