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This study aims to explore the relationship between locus of control, grit, self-esteem and mental health among college students. A questionnaire survey was used to conduct a study on the mental health of 923 E-learning college students from 10 universities in Guangxi, China. In this study, Pearson correlation analysis was used to test the correlation between the study variables, and Bootstrap was used to test the mediating effect and effect ratio of grit and self-esteem. The results show that, locus of control, grit, and self-esteem can predict the mental health of college students. Grit plays a mediating role between locus of control and mental health; self-esteem plays a mediating role between locus of control and mental health; grit and self-esteem have a chain mediating effect between locus of control and mental health. Specifically, internal locus of control can effectively prevent college students from mental health problems through the chain mediation effect of grit and self-esteem. Powerful others and opportunity as the external locus of control will not only reduce the grit and self-esteem of college students, but also lead to more psychological problems. These research results provide suggestions to the university management on how to manage the mental health of E-learning students, especially those with psychological problems.

This paper takes work-family conflict as the independent variable, work engagement as the dependent variable, and perceived organizational support and emotional exhaustion as the mediating variables, and studies the influence of work-family conflict on work engagement and the mechanism of perceived organizational support and emotional exhaustion of female university teachers in China, based on the job demand-resource model (JD-R). The results of the questionnaire survey of 518 female university teachers revealed a significant negative relationship between work-family conflict and work engagement, with a direct effect accounting for 31.88%. The indirect effect of work-family conflict on work engagement through perceived organizational support was significant, accounting for 63.19%, while the mediating effect of emotional exhaustion was not notable and the chain mediating influence of perceived organizational support and emotional exhaustion was not significant.

Work and family are two of the most important parts in one's life. Individuals cannot fulfill their work requirements and family responsibilities at the same time, so they are faced with the dilemma of timing and role conflict. Based on the conservation theory, this study explored the relationship between work-family conflict and job satisfaction in 422 female university teachers in China, and proposed a moderating mediation model to examine the mediating role of job burnout and the moderating role of perceived organizational support. The results show that work-family conflict has a significant negative predictive effect on job satisfaction; job burnout fully mediates the relationship between work-family conflict and job satisfaction; perceived organizational support moderates the relationship between work-family conflict and job burnout, and the stronger the perceived organizational support, the weaker the negative predictive effect of work-family conflicts on job satisfaction.

The aim of this study was to investigate the competency of physical education teachers at the basic education level in China. The study was conducted using a qualitative approach, using purposive sampling to conduct in-depth interviews with 12 physical education teachers from schools at the basic education level in China using the behavioral event interview method and extracting themes using coding techniques with the thematic analysis method. The results of the study show that the competencies of physical education teachers at the basic education level in China include 6 themes: Competency characteristics, knowledge characteristics, teacher moral characteristics, motivation characteristics, values characteristics and personality characteristics.

Objective To explore the correlation between functional connectivity (FC) in the brains of Parkinson's disease (PD) patients with depression and the improvement rate of depression after subthalamic nucleus deep brain stimulation (STN-DBS). Methods This study included 38 PD patients (25 with depression and 13 without depression) who underwent STN -DBS at The First Affiliated Hospital of University of Science and Technology of China from September 2019 to April 2020. All participants underwent resting-state fMRI. The severity of depression was assessed using Hamilton Depression Rating Scale-17 Items (HAMD-17) before and 2 years after the surgery, and the improvement rate of depression was calculated. Spearman rank correlation analysis was used to investigate the relationship between FC and the improvement rate of depression in PD patients with depression. Results There were 34 different FC between PD patients with and without depression compared to control group (P = 0.000, for all). Among patients with PD, those with depression showed 4 distinct FC compared to those without depression, including left precuneus -right supplementary motor area (t = 6.028, P = 0.000), right insula -right lateral orbital gyrus (t = 5.525, P = 0.000), left paracentral lobule-left precuneus (t = 5.545, P = 0.000), and right paracentral lobule - left precuneus (t = 5.578, P = 0.000). Spearman rank correlation analysis revealed a negative correlation between the zFC values of right precuneus-right insula (rs = - 0.544, P = 0.009) and left temporal pole-left insula (rs = - 0.765, P = 0.010) and the improvement rate of depression in PD patients with depression. Conclusions The FC of right precuneus-right insula and left temporal pole-left insula in PD patients with depression is negatively associated with the improvement rate of depression.

While existing literature supports the use of smartphones to teach English vocabulary, limited studies have addressed how learned words can be transferred to college students' writing. This action research study designed pretest, treatment on mobile phones, posttest, and out-of-class pair-work, followed by a delayed posttest after three weeks to promote academic vocabulary use in writing. In the four-week treatment, academic words and collocations were designed using Quizlet units, combined with in-class writing practice. In the pair-work stage, the participants were allowed freedom to choose words they desired to learn and to exchange each other's word logs with recycling of taught vocabulary designed in the treatment. Assessment of the pretest, posttest, and the delayed posttest involved (a) a general academic vocabulary test (receptive knowledge), (b) a vocabulary test of target words (gap-filling), and (c) an in-class writing task. Results show that our mobile-assisted language learning (MALL) project helped participants remember more words after their MALL experiences and apply them in their writing; meanwhile, such improvement could be maintained. Pair work was more favored than individual work as the participants indicated a stronger preference and endorsed collaborative learning. We argue that mobile devices should be combined with new learning strategies for both in-class and out-of-class learning.

Abstract Background Type 1 diabetes is believed to be an autoimmune condition, characterized by destruction of insulin-producing cells, due to the detrimental inflammation in pancreas. Growing evidences have indicated the important role of type I interferon in the development of type 1 diabetes. Methods Trex1-deficient rats were generated by using CRISPR-Cas9. The fasting blood glucose level of rat was measured by a Roche Accuchek blood glucose monitor. The levels of insulin, islet autoantibodies, and interferon-β were measured using enzyme-linked immunosorbent assay. The inflammatory genes were detected by quantitative PCR and RNA-seq. Hematein-eosin staining was used to detect the pathological changes in pancreas, eye and kidney. The pathological features of kidney were also detected by Masson trichrome and periodic acid-Schiff staining. The distribution of islet cells, immune cells or ssDNA in pancreas was analyzed by immunofluorescent staining. Results In this study, we established a Trex1-deletion Sprague Dawley rat model, and unexpectedly, we found that the Trex1 −/− rats spontaneously develop type 1 diabetes. Similar to human diabetes, the hyperglycemia in rats is accompanied by diabetic complications such as diabetic nephropathy and cataract. Mechanistical investigation revealed the accumulation of ssDNA and the excessive production of proinflammatory cytokines, including IFN-β, in Trex1 null pancreas. These are likely contributing to the inflammation in pancreas and eventually leading to the decline of pancreatic β cells. Conclusions Our study links the DNA-induced chronic inflammation to the pathogenesis of type 1 diabetes, and also provides an animal model for type 1 diabetes studies.