A longitudinal evaluative study of student difficulties with engineering graphics

We have previously reported in this journal that spatial ability influences academic performance in engineering. We have also reported that spatial ability is trainable, and can be increased through instruction focused on using perception and mental imagery in three-dimensional representation. In this article, we present the results of a longitudinal evaluative study of student difficulties with engineering graphics at our university, involving research over a 24-year period. Prior to our intervention, the first-year engineering graphics course at our university had a failure rate of 36% for all engineering students, and failure rates of 80% for African students studying at our university. In terms of outcomes, our study indicates that changed teaching practices have been associated with increased pass rates, which currently average 88% for all students. There is clear evidence that African students no longer experience major difficulties in passing the course. This can be attributed both to changes in teaching methodology, as well as broader contextual changes occurring in South Africa over the period reviewed.

Despite evidence of increased pass rates, our data suggest that there is a continuing relationship between three-dimensional spatial perception and academic performance in engineering graphics, as well as with aggregated first-year engineering marks. For this reason, many students still require academic support. There is also evidence that female students experience difficulties with engineering graphics due to lack of previous technical experience, and use a variety of strategies to overcome their study problems. The most effective appear to be use of peers and friends, and in particular students who had previously taken the course, as mediators of the course content and materials. Those female students who have not taken technical drawing at school level, and female students who do not network with other engineering students, are those at greatest disadvantage.     

浅析旅行社对导游服务人员的心理环境建设

为了满足物质和精神享受的需要,旅游者外出旅游时需要导游提供的一系列服务。导游作为旅行社和游客的主要联络人员,负责旅游活动的全部过程。导游员的心理活动不仅会影响自己的服务质量,同时也会给游客留下相应的心理感受。培养健康、积极、具有良好心态的优秀导游,能增强旅行社的竞争实力。     

亳菊保健啤酒研究

通过在啤酒发酵过程中添加不同比例的亳菊水提液,研究亳菊水提液添加浓度对啤酒风味和抗氧化能力的影响.研究发现,在啤酒后酵前加入3～4 g/L的亳菊参与发酵反应,能生产出兼具亳菊和啤酒独特风味、抗氧化能力强的亳菊保健啤酒.     

大学生室友关系调查及影响因素探析

目的：对大学生室友关系进行调查,进而分析其影响因素．方法：调查问卷和随机整群抽样．结果：性格不同、生活习惯不同、作息时间不同、“三观”不同是影响室友关系的主要因素．结论：加强室友间的沟通协调有助于相互理解、增进友谊、减少矛盾．高校应大力倡导大学生和谐的寝室人际关系,积极给予心理疏导,促进大学生健康成长．     

学校领导干部心理健康现状调查及对策研究

本文采用SCL-90为研究工具,研究表明中小学领导干部心理健康水平与其他职业人群差异不显著。但组内差异明显,其中,许多中层和副校级领导干部的心理健康水平低于正校级领导干部甚至普通老师。建议提升中小学教师和领导干部的社会地位,关注重点人群,建立和健全中小学领导干部的心理健康教育机构,广泛开展中小学领导干部的心理健康教育活动、个别咨询和辅导。     

Area-socioeconomic disparities in mental health service use among children involved in the child welfare system

Relying on data from a nationally representative sample of youth involved in the child welfare system (CWS) in 1999–2000 (the National Survey of Child and Adolescent Well-Being, Cohort 1) and 2008–2009 (Cohort 2), this study implemented a diverse set of disparity indicators to estimate area-socioeconomic disparities in mental health (MH) services use and changes in area-socioeconomic disparities between the two cohorts. Our study found that there are area-socioeconomic disparities in MH service use, indicating that the rates of MH service use among youth referred to the CWS differ by area-socioeconomic positions defined by county-level poverty rates. We also found that area-socioeconomic disparities increased over time. However, the magnitude of the increase varied widely across disparity measures, suggesting that there are different conclusions about the trend and magnitude of area-socioeconomic disparities, depending upon which disparity measures are implemented. A greater understanding of the methodological differences among disparity measures is warranted, which will in turn impact how interventions are designed to reduce socioeconomic disparities among children in the CWS.     

Childhood maltreatment: A predictor of mental health problems among adolescents and young adults

Child maltreatment is a risk factor for detrimental effects on mental health that may extend to adulthood. This study aimed to examine the association between exposure to childhood maltreatment, socio-demographic factors, and students’ mental health status and self-esteem. A cross-sectional study enrolled a representative sample of 1270 students from Kuwait University. An anonymous self-administered questionnaire included students’ socio-demographic characteristics, history of exposure to childhood physical and/or emotional maltreatment, DASS-21 to assess mental health status, and Rosenberg self-esteem scale was used. Chi-square test and binary logistic regression models were applied. The study found that among participants, 49.6%(95% CI: 64.8%–52.4%), 63.0%(95% CI: 60.3%–65.7%), and 43.8%(95% CI: 41.1%–46.6%) reported having depression, anxiety, and stress respectively. Moreover, 22.5%(95% CI: 20.1%–24.8%) and 18.6%(95% CI:16.5%–20.9%) reported childhood physical and emotional maltreatment, respectively; while 12.7% reported both. Multivariate analysis revealed that experiencing childhood physical and emotional maltreatment were independent contributors to reporting depression and anxiety; while exposure to only emotional maltreatment contributed to reporting stress. Gender, GPA, childhood enrollment in private/public schools, number of close friends, were other contributors to mental health problems. Participants’ median score of self-esteem was 17/30, and only childhood emotional maltreatment was a significant predictor to low self-esteem after adjustment for other confounders. Mental health problems, and experiencing childhood physical and emotional maltreatment were prevalent relatively high among university students. Childhood corporal and emotional maltreatment were independent predictors to adolescents and young adults’ mental health problems. Experiencing childhood emotional maltreatment predicted low self-esteem. Further research to assess culture factors associated with childhood maltreatment is recommended.     

健康中国视域下高校田径运动发展研究

田径运动是所有运动的基础运动,是促进身体健康的重要手段,对实现健康中国战略有重要的意义。本研究以普通高校大学体育田径运动的教学及发展路径为切入点,对几所高校进行调查分析,找出田径运动发展过程中存在的问题,并提出相关建议,使田径运动在高校更好地发展,促进健康中国战略目标的贯彻实施。     

Adverse and adaptive childhood experiences are associated with parental reflective functioning in mothers with substance use disorder

Mothers with a substance use disorder (SUD) are at risk for maladaptive parenting practices, and have heightened likelihood of having experienced childhood adversity themselves. In addition, parental reflective functioning (PRF), a capacity underlying sensitive caregiving, is often low in mothers with SUD. This study examines the relationship between PRF and aversive (emotional, physical, sexual abuse and neglect) and adaptive (safety and competence) experiences, in different developmental phases (early childhood, latency, and adolescence) in mothers with a SUD. A sample of 43 mothers with small children were interviewed with the Parental Developmental Interview to assess PRF, and they completed the Traumatic Antecedents Questionnaire regarding aversive and adaptive experiences. In addition, we used the Hopkins Symptoms Checklist-10 to control for mental health status and a battery of neuropsychological tests to control for executive functions. Results indicated that adaptive experiences in early childhood were positively related to PRF, and that experience of emotional abuse was negatively related to PRF. When separating the group of mothers in two sub-groups based on PRF level, results showed that mothers with negative to low PRF had significantly more experiences of adversities in early childhood and latency, and significantly less adaptive experiences in early childhood, latency and adolescence, compared to mothers with moderate to high PRF. In addition, mothers with adequate to high PRF reported experiencing significantly more types of adaptive experiences, and significantly less adversities compared to mothers with negative to low PRF. Results are discussed in relation to developmental trauma, resilience, epistemic trust and mistrust.     

鲁迅作品的童年情结

童年情结是鲁迅叙事性文学作品的重要组成部分,它包含情感愉悦和精神创伤等丰富文化内涵,是鲁迅所精心建构的绚烂多彩的艺术世界中一道亮丽的人文景观.童年情结是作家理想人格的诞生地与出发地,是我们探寻鲁迅心灵成长轨迹的清晰的路标.