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Background Susceptibility to evaluative conditioning(EC) is associated with many social cognitive and psychological biases that are key to psychological problems. For example, depression and anxiety are closely related to susceptibility to negative stimuli, and susceptibility to positive stimuli is associated with healthy psychology and well-being. Therefore, susceptibility to evaluative conditioning is closely related to mental health and cannot be ignored. As a factor that can affect the susceptibility to evaluative conditioning, mindfulness has only recently received attention. This study aims to to provide more targeted services for health clubs wishing to support well-being and mental health. Methods To explore the feasibility and effect of mindfulness interventions on susceptibility to evaluative conditioning, 72 subjects were included in a fitness club in Hefei. Thirty-six of the subjects participated in mindfulness training with the Mindful Attention Awareness Scale (MAAS), Positive and Negative Emotion Scale (PANES), and using the evaluative conditioning paradigm(picture-picture paradigm) for examination. Results The results of the correlation and comparison of differences showed susceptibility to evaluative conditions, and the difference in the experimental group was significant before and after the intervention (P ༜0.05). Conclusions Compared to a control group, 12 hours of yoga and mindfulness training improved mindfulness, as measured on the Mindful Attention Awareness Scale, a decrease in negative susceptibility leads to a relative increase in positive susceptibility, therefore, people can feel more positive and have better mental health.

In many existing works, the seakeeping motions and air dynamics of a surface effect ship (SES) were assumed to be linear under small-amplitude waves (wave amplitude to wave length ratio ≤ 5%) to enhance the computational efficiency. However, according to SES model test results, it was found that even in small-amplitude waves, the fluctuating air cushion pressure shows significantly nonlinear effects. To precisely reveal this distinctive feature, the origin of nonlinearity was carefully investigated and the air leakage was considered as the main source of nonlinearity based on mathematical analysis in this paper. The reason is that the variance of clearance height under seals is comparable to the clearance height at equilibrium state in small-amplitude waves, which makes the air leakage area intermittently equal to zero without any harmonic variance. Therefore, an efficient partial nonlinear numerical model for the SES dynamics was proposed by combining a linear frequency-domain hydrodynamic model based on the efficient 2.5D methods with a nonlinear time-domain air dynamic model. The nonlinear parts of numerical results from the partial nonlinear model, including the fluctuating air pressure and midship accelerations, agree well with experimental results. The results demonstrate the effectiveness of the partial nonlinear model on the SES seakeeping performance prediction, and confirm that its nonlinearity mainly originates from the air leakage.