高等教育规模与其影响因素的灰色关联分析     

耿立艳  段英文  赵鹏 《科教文汇》2012,(24):23-24,29

在分析高等教育规模影响因素的基础上,选取国内生产总值GDP、工业生产总值、第三产业占GDP比重、财政收入、恩格尔系数、财政性教育支出、普通高校数、总人口数作为影响指标,利用灰色关联分析法定量地确定各因素对高等教育规模的影响程度。结果表明,在8项因素中,普通高校数、第三产业占GDP比重、总人口数和恩格尔系数对高等教育规模的影响较大,灰色关联度分别为：0.9397、0.9365、0.9310、0.9258。  相似文献   

鸡西市煤炭开采的若干技术问题与治理     

李俊平 《鸡西大学学报》2009,9(4):61-62

鸡西是个因煤而立、因煤而兴的地市,经历了104年的煤炭开采历史,目前已经开始进入1000m的深部开采。鸡西地下采空区纵横交错、四通八达。透水、地下煤层防灭火、深部开采问题、大倾角采煤已经成为困扰鸡西煤炭开采的技术问题。  相似文献   

管理科学期刊引证指标的灰色关联研究          下载免费PDF全文

岳洪江  刘思峰 《科学学研究》2008,26(1):61-65

 利用灰色绝对关联度与优势分析理论和方法,分析了2004年16种管理科学学术期刊影响因子、即年指标与其期刊计量指标之间的关系,得出了影响因子、即年指标与各指标间的关联度,结果表明,篇均作者和基金论文比是影响管理科学期刊质量的两个最重要指标,并对结果进行了分析。  相似文献   

ANP基因多态性对AMS发生及低氧习服效果的影响     

周文婷  胡扬  徐飞 《北京体育大学学报》2010,(12)

目的:研究ANP基因多态性对急性高山病(AMS)发生及低氧习服效果的影响。方法:Phase 1:模拟海拔4 800 m低氧环境中,61名北方汉族大学生急性暴露6 h,入舱30 min后以恒定负荷蹬车20min。Phase 2:恢复1周后,48名受试者进行3周渐进式低氧运动。恢复1周,重复Phase 1。PCR-RFLP法解析C-664G及T2238C位点基因型。结果:低氧运动后,62.5%的受试者低氧耐受力增强,AMS发生率由49.2%降至18.7%。C-664G和T2238C位点不同基因型和等位基因携带者的AMS发生率和AMS评分变化趋势不显著。结论:IAE辅以运动对AMS发生及低氧习服效果显著,ANP基因多态性与此无关。  相似文献   

齿轮激光淬火工艺参数的研究     

戴忠森 《上海海事大学学报》1991,(3)

本文介绍了齿轮激光淬火的主要参数入射角θ,扫描速度v和激光束光斑尺寸D的确定方法。并导出了入射角θ和扫描速度v的通用计算公式;同时分析了在不同初始条件下,齿轮进行激光淬火时这些参数的变化规律及其对齿轮硬化层深的影响。  相似文献   

决策问题识别的方法研究   总被引：7，自引：0，他引：7  

候立文  谭家美  蒋馥 《预测》2001,20(3):74-78

首先介绍了决策过程前期阶段－问题识的概念，认为问题识别作为一种主观主要受到人的认知能力的影响，识别过程实际是一个评价过程，其最终目的是为了评价现实系统与目标状态之间所存在的偏差的大小。根据这一特点，建立了灰色关联度评价模型和一种基于反应值的满意评价模型，并用一实例对这两种模型进行了验证。  相似文献   

浅谈詹姆斯·布坎南的公共债务理论     

徐铖 《山东商业职业技术学院学报》2022,22(1):24-28

詹姆斯·布坎南的著作《公共债务的公共原则》最广为人知的观点是公共债务使公共活动的成本从当下转移到未来公民身上。这种观点与社会是由独立个体组成的观点相反,社会是由独立个体组成的观点是把一代人看作一个整体和一个行为主体,是研究以代表性主体、社会化个体为代表的宏观经济理论家所持的观点,与布坎南本人的《选择与成本》以及其他专著的论述相左。对布坎南的观点进行理性的思考和解读,通过比对布坎南1958和1969年的专著和研究,认为其保持了高度的连贯性和合理性,即成本转移只能在个体间而不能在不同代际间进行。认为基于宏观经济理论的公共债务和基于公共财政的公共债务具有显著区别。很多经济学家认为《公共债务的公共原则》是宏观经济学著作,而实际上应该归于公共财政和公共经济学范畴。  相似文献   

Test anxiety prevalence and gender differences in a sample of English secondary school students     

Dave Putwain  Anthony L. Daly 《Educational studies》2014,40(5):554-570

The aim of this study was to estimate the proportion of students who report themselves as highly test anxious in a sample of English secondary schools and whether this proportion differed by gender. Self-report test anxiety data were collected from 2435 secondary school students in 11 schools. Results showed that 16.4% of the sample reported themselves to be highly test anxious, with the proportion significantly higher in female students (22.5%) than male students (10.3%). Moderate gender differences were present in the worry and tension components of test anxiety and small differences in the social derogation component. While not all highly test anxious students might be at risk of underperformance and disengagement from school and academic activities, there may still be a sizable group of students who would benefit from specific support and intervention.  相似文献   

几种新的接近性灰色关联度的计算方法及其应用   总被引：1，自引：0，他引：1  

陈瑶 《绵阳师范学院学报》2010,29(8):4-8

针对现有的灰色关联度模型计算存在的缺陷,指出了现行灰决策中的关联分析是接近性分析,给出了灰色接近性关联度的几种定义、性质,并根据五种接近性关联度的性质的分析并结合实际要求,建立了接近性关联度公理体系。最后通过实例的比较和分析说明了接近性关联度的合理性。  相似文献   

Walking pace and the risk of stroke: A meta-analysis of prospective cohort studies     

Minghui Quan  Pengcheng Xun  Ru Wang  Ka He  Peijie Chen 《运动与健康科学(英文)》2020,9(6):521-529

PurposeThe extent to which walking pace is associated with a reduced risk for stroke remains unclear. This study examined the association between walking pace and stroke risk based on prospective cohort studies.MethodsDatabases of PubMed, EMBASE, Web of Science, Scopus, and China National Knowledge Internet were searched from the inception dates to January 31, 2019, for prospective cohort studies focusing on walking pace and risk of stroke in adults. Two reviewers independently extracted data and assessed the quality of the studies. The dependent measure was stroke incidence. Using random-effects models, a meta-analysis was performed to estimate the overall relative risks (RR) of stroke incidence and 95% confidence intervals (CIs) for the individuals with the fastest walking paces vs. individuals with the slowest walking paces. A dose-response relationship was also examined.ResultsAfter screening 1294 titles/abstracts and 14 full-text studies identified in the search, 7 studies (from 8 cohorts) were included in the meta-analysis. The 7 studies included a total of 135,645 participants (95.2% women; mean age 63.6 years) and 2229 stroke events (median follow-up time = 8.0 years). Compared to individuals in the slowest walking-pace category (median = 1.6 km/h), individuals in the fastest walking-pace category (median = 5.6 km/h) had a 44% lower risk of stroke (pooled RR = 0.56, 95%CI: 0.48–0.65). There was also a linear dose-response relationship (RR = 0.87; 95%CI: 0.83–0.91), with the risk of stroke decreased by 13% for every 1 km/h increment in baseline walking pace. We observed similar results across walking-pace assessment, type of stroke ascertainment, stroke subtypes, sex, sample size, and duration of follow-up.ConclusionFindings from this meta-analysis indicate that walking pace is inversely associated with the risk of stroke.  相似文献