In this research work, an attempt was made to machine the titanium (Ti6Al4V) alloy utilizing electric discharge machining technique. The distinct process parameters and its impact on the machining performance were identified using the cause-and-effect diagram (CED). The key process parameters identified by CED diagram were current, pulse on time (Ton), aluminium oxide (Al2O3) powder concentration, and gap distance; experiments were conducted by varying the process parameters, experimental runs were designed using the Taguchi mixed orthogonal array. The experimental results revealed that improvement in material removal rate (MRR) was due to the bridging effect; reduction in tool wear rate (TWR) owing to the expansion of spark gap and enhancement in the surface roughness (Ra) was due to the complete flushing of machined debris. The interaction impact was analysed using the contour plot and with the aid of mathematical modelling experimental fits that were identified and the results were validated utilizing the sensitivity analysis. The obtained results were optimized using the technique for order of preference by similarity to ideal solution (TOPSIS) optimization technique.

Humans have traditionally found it simple to identify emotions from facial expressions, but it is far more difficult for a computer system to do the same. The social signal processing subfield of emotion recognition from facial expression is used in a wide range of contexts, particularly for human-computer interaction. Automatic emotion recognition has been the subject of numerous studies, most of which use a machine learning methodology. The recognition of simple emotions like anger, happiness, contempt, fear, sadness, and surprise, however, continues to be a difficult topic in computer vision. Deep learning has recently drawn increased attention as a solution to a variety of practical issues, including emotion recognition. In this study, we improved the convolutional neural network technique to identify 7 fundamental emotions and evaluated several preprocessing techniques to demonstrate how they affected the CNN performance. This research focuses on improving facial features and expressions based on emotional recognition. By identifying or recognising facial expressions that elicit human responses, it is possible for computers to make more accurate predictions about a person's mental state and to provide more tailored responses. As a result, we examine how a deep learning technique that employs a convolutional neural network might improve the detection of emotions based on facial features (CNN). Multiple facial expressions are included in our dataset, which consists of about 32,298 photos for testing and training. The preprocessing system aids in removing noise from the input image, and the pretraining phase aids in revealing face detection after noise removal, including feature extraction. As a result, the existing paper generates the classification of multiple facial reactions like the seven emotions of the facial acting coding system (FACS) without using the optimization technique, but our proposed paper reveals the same seven emotions of the facial acting coding system.

This study aimed to investigate the antecedents influencing employees’ engagement at universities in Amhar Reginal state Ethiopia. The study used descriptive and explanatory research designs. A total of 320 academics staffs were taken from ten Amhara Reginal State public Universities as a sample and 282 valid questionnaires collected. Convenience and snowball sampling were used to select the employees from each University. Also, cross sectional survey method applied to collect data via Likert scale questionnaire. Correlation and multiple regression modeling were used to appraisal association and predict the relationships. Initially, a pilot test was a sampled of 30 instructors to check data scale reliability. The study found that all the independent variables (work environment, leadership, reward, organizational support, work motivation) variables had statistically significant correlation with employees’ engagement. Morover the study founded that all the studied variables were predictors of workers engagement(R2= 0.662); but the predictors that had foremost influence were working environment, leadership and work motivation. Remarkable emphasis and devotion is required particularly on variables such as working environment, leadership and work motivation as they have reveled significantly greater influence on employees engagement. Universities shall focus on creating better work environment, working on instructors motivating factors and more work is required to improve the leadership to boost work engagement.

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Education is the process through which a mature human mind evolves from a child's mind. Education is a means for disseminating information about both known and unfamiliar topics. It will enable the human brain to comprehend known and unfamiliar concepts in greater depth. As days pass, so do educational methods, which shift according to the needs of the hour. As a result of the COVID-19 crisis, all educational institutions have moved to virtual courses and an online education system that is separate from the actual surroundings. The Indian education system is not new to technological growth, but being exposed to it frequently and adapting to the current condition could make educators vulnerable. Before any changes take place, transition space is required to adapt and become accustomed to the new circumstances. However, the pandemic condition provided enough time for the shift to adapt to the technological civilization. This has a greater effect on online instructors. This study examines how the severity of the influence on education professionals who teach online impacts their psychological well-being, as well as solutions for dealing with the technological culture and psychological well-being.