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排序方式: 共有281条查询结果,搜索用时 15 毫秒
1.
邓思海 《重庆工贸职业技术学院学报》2006,(1)
建筑地基基础设计规范(GB50007-2002)给出的桩身计算方法对轴心受压桩很适用,而对偏心受压桩计算就非常繁琐。本文给出偏心受压桩一种简化计算方法和工程应用实例。 相似文献
2.
A rich literature exists reinforcing the notion that both perceived and received social support has stress ameliorating and protective benefits both psychologically and physiologically. However, recent literature suggests that excessive dyadic negative problem talk about an issue, a phenomenon labeled co-rumination, may reverse much of the beneficial effects of social support. Healthy young adults participated in a laboratory research study exploring the associations between co-rumination and immune system inflammatory response. Partial correlations indicated a positive association between co-rumination and C-reactive protein and a negative association between co-rumination and interleukin-6 after controlling for stress, anxiety, and temperature. Discussion focuses on the means by which co-rumination may lead to negative health outcomes. 相似文献
3.
本文采用实验研究、问卷调查以及数理统计等方法,从学习、生活、发展、社交和家庭等五个方面分析不同体质条件下大学生心理应激水平的差异,为更好地促进大学体育开展,促进大学生身心健康发展提供依据. 相似文献
4.
采用有限元分析方法对烟草包装机椭圆齿轮的静力学特性进行理论计算和研究,建立椭圆齿轮的有限元模型,通过有限元分析软件ANSYS Workbench对椭圆齿轮进行分析,得出椭圆齿轮各轮齿的应力分布,并对计算结果进行分析。该方法和所得结果为椭圆齿轮的优化设计提供了参考。 相似文献
5.
6.
《Information processing & management》2022,59(6):103064
Occupational stress has a significant adverse effect on workers’ well-being, productivity, and performance and is becoming a major concern for both individual companies and the overall economy. To reduce negative consequences, early detection of stress is a key factor. In response several stress prediction methods have been proposed, whose primary aim is to analyse physiological and behavioural data. However, evidence suggests that solutions based on physiological and behavioural data alone might be challenging when implemented in real-world settings. These solutions are sensitive to data problems arising from losses in signal quality or alterations in body responses, which are common in everyday activities. The contagious nature of stress and its sensitivity to the surroundings can be used to improve these methods. In this study, we sought to investigate automatic stress prediction using both surrounding stress data, which we define as close colleagues’ stress levels and the stress level history of the individuals. We introduce a real-life, unconstrained study conducted with 30 workers monitored over 8 weeks. Furthermore, we propose a method to investigate the effect of stress levels of close colleagues on the prediction of an individual’s stress levels. Our method is also validated on an external, independent dataset. Our results show that surrounding stress can be used to improve stress prediction in the workplace, where we achieve 80% of F-score in predicting individuals’ stress levels from the surrounding stress data in a multiclass stress classification. 相似文献
7.
采用文献资料法和逻辑分析法,借助生物适应理论探讨运动训练的本质,为提高运动员竞技能力提供理论依据。运动训练是有目的的改造人类自身的实践活动,其本质就是基于内稳态的生物适应,是对内稳态理论的应用与发展。运动训练中人体对训练负荷产生的应激反应,能引起有机体机能水平的适应性提高,适应过程和适应机理均可通过应激学说来解释。训练刺激会给机体内部带来正负两种效应:适应效应和疲劳效应。在有效的时间内,任何一次训练刺激最终表现为正负两种效应的综合。 相似文献
8.
大学生运动实施度与应激关系的研究 总被引:9,自引:2,他引:7
研究探讨了SCL-6三维应激测试量表的信赖性,分析了大学生运动实施度与应激的关系.结果表明,SCL-6量表测试应激的信赖性是可以确认的,证实运动实施度与应激水平的高有十分密切的关系,即运动高实施群的应激水平要明显低于低实施群.其中,运动强度与时间对减缓应激的作用更为显著,而运动频度对应激的减缓效果并不明显. 相似文献
9.
Garima Mehta Seema Kothari P. P. Singh 《Indian journal of clinical biochemistry : IJCB》2001,16(1):65-71
From January 1992-January 1998, 1404 patients attended the “Breast Clinic” of R.N.T. Medical College M.B. Hospital, Udaipur.
Out of these, 11% and 81% patients had breast cancer (B.C.) and benign breast cancer (B.B.D.) respectively. The oxidative
load in B.C. was 2.32 times higher than controls, but comparable to B.B.D. β-Carotene deficiency was uncommon in patients,
whereas vitamin A deficiency was almost equally common in both B.C. and controls. Most of the patients had almost depleted
levels of α-tocopherol and ascorbic acid but their TBAR levels were in normal range. The data in the present study when compared
with B.B.D. and other local normal subjects point out: a) oxidative burden in B.C. is a consequence and not the cause of the
disease, (b) oxidative stress could be one of the etiological factors in tumor expression, which need not to be malignant
and c) α-tocopherol and ascorbic acid are not importantly responsible for higher oxidative burden in B.C. 相似文献
10.