Efficient distribution of service requests between fog and cloud nodes considering user mobility and fog nodes’ overload is an important issue of fog computing. This paper proposes a heuristic method for Task placement considering the mobility of users, aiming to serve a higher number of requested services and minimize their response time. This method introduces a formula to overload prediction based on the entry-exit ratio of users and the estimated time required to perform current requests that are waiting in the queue of a fog node. Then, it provides a solution to avoid the predicted overloading of fog nodes by sending all delay-tolerant requests in the overloaded fog node’s queue to the cloud to reduce the time required for servicing delay-sensitive requests and to increase their acceptance rate. In addition, to prevent requests from being rejected when the mobile user leaves the coverage area of the current fog node, the requests in the current fog node’s queue will be transferred to the destination fog node. Simulation results indicate that the proposed method is effective in avoiding the overloading of the fog nodes and outperforms the existing methods in terms of response time and acceptance rate.

This study addresses a significant knowledge gap in understanding the effects of Task-specific enjoyment and anxiety conditions on the language mindset of Iranian EFL learners in a listening course. Using a quasi-experimental design, 75 male high school students were divided into three groups: a Task enjoyment (TE) group, a Task anxiety (TA) group, and a control group. The TE group participated in a low-stakes, autonomy-based listening Task designed to foster enjoyment, while the TA group completed a high-stakes, evaluative listening Task intended to induce anxiety. Data were collected using standardized instruments, including the Foreign Language Enjoyment Scale (FLES), the Foreign Language Classroom anxiety Scale (FLCAS), and the Language Mindset Inventory (LMI). A series of T-tests and ANOVA were conducted to analyze pre- and post-test scores across the three groups. Results showed that the TE group experienced significantly higher levels of Task enjoyment and subsequently developed significantly stronger growth-oriented beliefs regarding overall linguistic intelligence and second language learning compared to both the TA and control groups. Conversely, the TA group exhibited significantly higher anxiety levels and a shift toward more fixed language mindsets. No significant differences were found between groups regarding beliefs about age sensitivity in language learning. These findings highlight the importance of considering Task-related emotions in language teaching and suggest that fostering enjoyment through autonomy-supportive Tasks can promote a growth mindset, while anxiety-inducing Tasks may reinforce fixed beliefs about language learning.

Background and Aim: During last decades one of the hazardous agents on workers’ health has been workplaces noise. The aim of this study was to investigate the level of noise exposure in different jobs and noise induced permanent threshold shift in relation to noise level and work experience.Method: This is a cross-sectional and descriptive study that performed among total workers.Dosimeters were done for determination of accurate noise exposure level during an eight-hour s shift for each job group. Audiometry was performed in a standard acoustic room by the audiologist. The obtained data was analyzed by means of SPSS software.Results: Mean of age was 36.58±6.76 (19-52 years) and minimum, maximum and mean of work experience were 1, 18, 11.08±5.47 respectively. Mean of hearing loss was 15.38±8.63 in right ear and 16.31±9.51 in left ear and total hearing loss was 14.72±8.33. A significant relationship was also identified between noise intensity and work experience with hearing loss.Conclusion: Findings of this study indicated that there is a high prevalence of noise pollution in different parts of workplace. Considering the obtained results, that shows positive effect of noise and work experience on hearing loss, the necessity of improvement of control and protection measures is of prime importance.