Purpose. Purpose is to describe the current situation and different impacts of demographic variables such as gender, age and marital status on employees’ job satisfaction, job performance and their relationship during the COVID-19 pandemic in Vietnam. Clarify the levels of influence among different job satisfaction groups on job performance and vice versa, the levels of influence among different job performance groups on job satisfaction. Study design. Data were collected using a survey for a convenient sample of 485 employees working at clothing and footwear factories in industrial zones of Hanoi and Hochiminh city Vietnam. Findings. Employees have lower job satisfaction and average job performance. The findings have no statistical difference from those before COVID-19. The cluster analysis results show that there are two employee groups, divided by the level of job satisfaction aswell as job performance. There is no statistical significance difference by gender in employees’ job satisfaction and job performance. Married people are more satisfied and have better performance than unmarried people whereas the young have lower job satisfaction and job performance than the older (p < 0.01). The job satisfaction group also indicate higher work performance than the one with lower job satisfaction. Correspondingly, the good performed group have greater job satisfaction than the one with average job performance (p < 0.01). The results reveal surprises about the role of relationships and salary. Relationships (colleagues, supervisors) have a strong impact on job performance of the job satisfaction group and on the job satisfaction of the good job performance. Meanwhile, salary has astrong impact on the performance of the less satisfaction group and on the job satisfaction of the average performance group. Implications for practice. Offer some recommendations for increasing employees’ job satisfaction and job performance, facilitate sustainable development to the organization. Value of theresults. The study compares the difference in the influence level of job satisfaction on job performance when clustering employees into groups of high and low job satisfaction. Likewise, the study also analyzes the impact of performance groups on employees’ job satisfaction.

In the design of steel crane girders, various sources of uncertainty such as material properties, loads, and geometric tolerances are inherent and inevitable. Using deterministic structural and/or load conditions may lead to low-reliability systems in real applications. In this paper, the probability of failure of overhead crane bridge girders with uncertain design parameters is investigated. First, the design problem of a crane double girder is introduced within a set of analytical stress and defection constraints. Then, the response surface method is used in conjunction with Monte Carlo methods to quantify the effect of the parameter uncertainties on the constraints of stress and deflection. For illustrative examples, various configurations of girders with original deterministic parameters proposed in the literature are selected and their deterministic optimization values are considered as the mean of random variables. The obtained results reveal that uncertainties such as coefficients of variation (COV) in structures and loads have strong effects on the probability of failure for all stated crane girder configurations. For only a wheel load COV of 0.05 and geometric dimension COV of 0.025, the means of geometric parameters have to be larger than 1.1 their deterministic-based values in order to reach a probability of failure at a level of 10-4. Keywords: failure probability; double-box girder; overhead crane; Monte Carlo method.

Vietnamese laws and the ideals of the Communist Party of Vietnam have made it possible for everyone to practice their beliefs and religion. Vietnam is now among the nations with the greatest variety and quantity of religious and philosophical beliefs. Due to the increasing development of religion and belief in Vietnam, the law needs to be improved to ensure the Vietnamese people's freedom of religion. The article focuses on analyzing major awareness points about religion and belief that occurred during the foundation and development of Vietnam since this is the root cause of changes in religious freedom in this country. As a result, it helps to answer the following questions: Is Vietnamese law on religion and belief up to par with the international standards of laws? Do Vietnamese citizens have the freedom to practice their religion and beliefs? The article also demonstrates the primary expressions of contemporary religious life in Vietnam.   Received: 29 July 2022 / Accepted: 5 September 2022 / Published: 5 November 2022