共查询到19条相似文献，搜索用时 171 毫秒
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杨毅 《衡阳师范学院学报》2005,26(3):129-132
给出广义灰色关联度方法的建模机理，并以实例进行验证与比较，结果是满意的，切合体育实际。旨在为体育科研实际应用提供又一新方法作参考。 相似文献
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根据2004~2013年图们江口岸物流和腹地经济指标数据,运用灰色斜率关联度和灰色综合关联度分别分析了吉林省内和省外腹地经济指标与口岸物流的相关性,进一步采用多维灰色模型对全部指标的协同性进行了测度.相关性分析结果表明,腹地经济指标与口岸物流的相关性总体处于中等水平且相差不大.协同性分析结果显示,口岸—腹地系统不具备自我发展能力,并且存在部分不协调因素.据此,文章提出增加口岸过货量的对策. 相似文献
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通过对灰色关联度模型机理进行分析,引入符号函数重定关联系数,并给出了一种新的关联度定义方法.改进后的关联度模型能够反映时间序列的正、负相关关系.实例验证表明,改进的灰色关联度能够更真实地反映时间序列曲线的关联程度,所得关联分析结果客观可靠,并且易于上机实现. 相似文献
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为了更好地评价教学质量,提出一种将AHP法和基于灰色关联度的模糊综合评判结合起来的决策模型。该模型使用AHP法确定教学质量评估指标体系中各指标的权重,并使用模糊评判和灰色系统理论,以灰色关联度为基础,对数据分析,为定量评价教学质量提供了有效的方法。目前该系统已投入试运行,效果良好。 相似文献
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首先对企业信用风险及其评价方法进行了简要回顾,建立了基于财务报表的企业风险评价指标体系,运用灰色系统理论构建了灰色关联度的评价模型,将待评指标与理想指标的灰色关联度作为相对风险测度的准则,实例结果表明灰色关联分析法评价企业信用风险比较符合实际情况。 相似文献
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运用灰色理论研究了中国代表团在第23届至第28届奥运会上所取得的金牌数的变化规律,建立了金牌数预测的灰色模型,并对2008年北京奥运会中国取得的金牌数作了预测.利用灰色关联度分析,讨论了运动项目对金牌总数影响的程度. 相似文献
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基于灰色关联的房地产市场有效需求分析研究 总被引：2，自引：0，他引：2
利用灰色理论对房地产市场有效需求影响因素进行了量化,并利用灰色关联度对各影响因素进行了灰色关联分析。通过实例说明灰色关联分析法的计算结果与实际是吻合的。根据灰色管理分析结果,对我国房地产业的稳定、有序发展提出了自己的合理化建议。 相似文献
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根据灰色关联度分析法,建立了房地产价格灰色关联度模型,利用宿州市房地产近十年价格数据（2002—2011年）,对宿州市房地产价格影响因素进行了深入分析．结果表明：宿州房地产价格主要由城市经济发展水平决定,投机因素较少,具有稳步上升的空间．最后根据宿州市房地产价格的未来走势,从经济发展,人均可支配收入,商品房销售面积等方面,提出了规范宿州市房地产市场的政策建议． 相似文献
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运用普通灰色关联度、灰色绝对关联度、灰色相对关联度的理论,综合分析了某铁矿山企业安全生产中影响事故伤亡率的4大因素：职工安全培训率、岗位变化率、安全管理水平、安全投资.各种灰色关联度分别从不同的侧面刻画了该矿山企业安全生产的现状.通过对计算结果的综合分析,找出了影响该矿山企业安全生产的主导因素,即岗位变化率,而与安全投资的关系不大.因此,尽量减少职工岗位变动,稳定职工队伍,是该企业安全生产中应该注意的重要问题. 相似文献
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Anna N. Cooke Kelly S. Fielding Winnifred R. Louis 《Environmental Education Research》2016,22(5):631-657
To identify pathways to lower environmental impacts, this research examined the motivation and antecedents of motivation (autonomy, relatedness, competence), of environmentally active people. Previous research suggests that people with more self-determined motivation for pro-environmental behavior (PEB) should carry out more PEBs, and have lower environmental impacts, than people whose motivation is more externally regulated. Path analysis in Sample 1 (N = 261) confirmed that self-determined motivation was positively related to both easy and difficult PEB. The more participants judged that their needs for autonomy and relatedness were met in relation to performing PEB, the more self-determined their motivation. Higher perceived relatedness was also directly related to reporting more engagement in difficult PEB. Perceived competence was not related to self-determined motivation or PEB. The pattern of results was largely supported when re-tested with a sample (N = 320) who completed a ‘carbon footprint’ measure of environmental impact as well as the questionnaire completed by Sample 1. In this sample, autonomy, relatedness, and competence were related to self-determined motivation. The research is the first to our knowledge to examine and find a relationship between higher self-determined motivation and lower self-reported environmental impact. These findings point to new approaches to increasing PEB. 相似文献
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冯依锋 《襄樊职业技术学院学报》2011,10(3):21-22
针对实际的工程问题,分别利用邓氏灰关联度公式及灰关联分析新的理论模型公式计算灰关联度,并将两种结果进行比较,说明灰关联新的理论模型计算结果更加合理。 相似文献
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在分析灰色模型与回归模型特点基础上提出了灰色回归模型,并以最小二乘法确定了两单一模型权重系数的分配。结果表明：灰色回归预测模型在最大、最小误差及平均误差这三项指标中明显优于两单一模型。因此,灰色回归模型能显著提高预测精度,可作为农业用水量预测的一种有效工具。 相似文献
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This study investigated the relevance of filial piety and the three components of self‐determination, namely, competence, autonomy and relatedness, on academic motivation among Hong Kong Chinese secondary school students. A total of 461 students completed the questionnaire which consisted of five scales assessing attitudes towards filial piety, perceived scholastic competence, perceived autonomous support from parents, relatedness with parents and academic motivation. By using structural equation modelling, a predictive model of academic motivation, with filial piety, competence, autonomy, relatedness, age and gender as antecedents, was developed. All variables explained the prediction of academic motivation, with competence acted as the strongest effect, followed by relatedness and filial piety. The findings highlight the important contribution of the three self‐determination theory (SDT) components and the value of filial piety for Chinese adolescents' academic motivation. The implications of the findings for future research and educational practice were discussed. 相似文献
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高层建筑物沉降观测与预测 总被引：1，自引：0，他引：1
高绍伟 《北京工业职业技术学院学报》2010,9(2):5-10,16
对北京工业职业技术学院综合楼沉降观测点和水准基点测量精度进行了方案设计与合理性研究。利用观测的原始资料,采用灰色GM(1,1)模型对封顶前、封顶后进行预测,并和精密水准测量的结果进行了对比,预测结果与实际结果吻合较好,所建预测模型精度高,在实际工程中有一定应用价值。并给出了完整的沉降观测的最终成果。 相似文献
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For students in cooperative education (co-op) programs, meaningful work is a critical aspect of participation and a key component of program success. However, studies have not explored how meaningful work can be created for co-op students. The purpose of this study was to evaluate the relationship between co-op students’ perceptions of a learning environment, perceived relatedness of the work experience (to their potential careers and to their academic studies), and self-reported meaningfulness of work. Data were collected from undergraduate co-op students in a Canadian university immediately following a co-op work term. Results from testing a parallel mediation model showed that both forms of relatedness partially mediated the influence of learning environments on self-reported meaningfulness. These findings offer insight into the ways in which work terms can be designed to enhance co-op students’ work experiences. 相似文献
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长江水质污染预测的灰色模型 总被引：5，自引：0，他引：5
水质预测涉及因素众多且机理复杂，而且已知数据偏少，故采用灰色理论中的GM（1，1）模型对长江污染物进行预测，并进行了四种检验，都达到较满意的效果．为了使预测结果更加准确，提出了用GM（1，1）模型群和等维灰数递补动态预测两种方法加以改进，从而避免使用单一的灰色模型容易受到不稳定信息影响的缺陷，使得预测精度更加准确，提高预测结果的可信度． 相似文献