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t-检验成对二样本分析法在船舶定线制中的应用 被引量:6
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作者 汪洁 《中国水运(下半月)》 2010年第6期8-,37,共2页
为科学有效的评估长江中游船舶定线制实施以来对减少辖区碰撞事故、规范通航秩序、改善通航环境的效果,笔者把假设检验中的t-检验成对二样本分析法应用于对船舶定线制实施前后中游辖区碰撞事故发生概率的分析,得出在给定显著性水平α下... 为科学有效的评估长江中游船舶定线制实施以来对减少辖区碰撞事故、规范通航秩序、改善通航环境的效果,笔者把假设检验中的t-检验成对二样本分析法应用于对船舶定线制实施前后中游辖区碰撞事故发生概率的分析,得出在给定显著性水平α下,检验结果数据落在了假设检验的拒绝域的结论,证明两组数据具有显著差异,长江中游船舶定线制的实施效果明显。 展开更多
关键词 t-检验成对二样本分析法 长江 船舶定线制
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医学多因素分析设计样本例数估算——多因素分析设计样本例数综合估算法 被引量:114
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作者 陈彬 《伤害医学(电子版)》 2012年第4期58-60,共3页
为使医学多因素分析样本例数适宜、统计分析结论客观,文中介绍新提出的多因素分析设计样本例数综合估算法,同时宣示广义多因素分析设计样本例数估算、回归分析设计样本例数两步估计、两组重复测量研究设计样本例数估算、制定多指标医学... 为使医学多因素分析样本例数适宜、统计分析结论客观,文中介绍新提出的多因素分析设计样本例数综合估算法,同时宣示广义多因素分析设计样本例数估算、回归分析设计样本例数两步估计、两组重复测量研究设计样本例数估算、制定多指标医学参考值范围样本例数估算、其余多因素分析时样本例数估算. 展开更多
关键词 多因素分析设计样本例数估算 多因素分析设计样本例数综合估算 回归分析设计样本例数两步估计 两组重复测量研究设计样本例数估算 制定多指标医学参考值范围样本例数估算
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基于有序样本聚类分析法和Logistic模型的闽楠苗高年生长规律研究 被引量:2
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作者 翁国庆 《安徽农学通报》 2016年第16期82-83,122,共3页
闽楠是我国的二级珍稀濒危树种,由于近年来其遭遇严重破坏,因而研究其生长规律,为人工栽培提供科学依据显得尤为重要。该研究首先运用有序样本聚类分析法,将闽楠一年生苗木苗高划分为出苗期、幼苗期、速生期和生长后期4个阶段,然后利用L... 闽楠是我国的二级珍稀濒危树种,由于近年来其遭遇严重破坏,因而研究其生长规律,为人工栽培提供科学依据显得尤为重要。该研究首先运用有序样本聚类分析法,将闽楠一年生苗木苗高划分为出苗期、幼苗期、速生期和生长后期4个阶段,然后利用Logistic模型对不同时期苗高生成量进行了拟合。通过与实际生成情况进行对比发现:Logistic拟合模型在苗高生长量估测上具有较高的准确性。该研究不仅具有较高的理论价值,同时为闽楠的科学栽培提供了科学依据。 展开更多
关键词 闽楠 年生长规律 苗高生长量 LOGISTIC模型 有序样本聚类分析
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强化编辑品牌意识的策略初探
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作者 米丽娟 《重庆文理学院学报(社会科学版)》 2012年第3期88-92,共5页
从编辑品牌意识在传媒发展过程中的重要性入手,根据品牌成长规律,运用样本分析的方法,以《上海星期三》、湖南卫视、重庆卫视和凤凰卫视等传媒品牌的成长历程为例,分析强化编辑品牌意识的七大策略:过程控制;路径探微;培育个人品牌;发挥... 从编辑品牌意识在传媒发展过程中的重要性入手,根据品牌成长规律,运用样本分析的方法,以《上海星期三》、湖南卫视、重庆卫视和凤凰卫视等传媒品牌的成长历程为例,分析强化编辑品牌意识的七大策略:过程控制;路径探微;培育个人品牌;发挥编辑枢纽作用;引入质量认证体系;完善多级审稿制度;建立纠错机制。 展开更多
关键词 编辑品牌意识 传媒生存状态 策略 样本分析法
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基于t检验的星基增强系统完好性数据核验
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作者 王娇 陈潇 +1 位作者 邓平科 吴海涛 《电讯技术》 北大核心 2017年第10期1213-1217,共5页
针对星基增强系统(SBAS)高完好性的服务需求,提出了一种SBAS广播参数用户差分伪距误差(UDRE)的完好性核验方法。利用监测站实测全球定位系统(GPS)和地球静止轨道(GEO)卫星信号,解析GPS电文和SBAS广播差分及完好性信息,对观测量修正误差... 针对星基增强系统(SBAS)高完好性的服务需求,提出了一种SBAS广播参数用户差分伪距误差(UDRE)的完好性核验方法。利用监测站实测全球定位系统(GPS)和地球静止轨道(GEO)卫星信号,解析GPS电文和SBAS广播差分及完好性信息,对观测量修正误差得到实测UDRE,使用t检验成对二样本分析法验证给定置信区间内广播UDRE'与实测UDRE的符合性,从而完成伪距域完好性参数UDRE的核验。伪距域的核验避免了以往位置域核验计算量大、多卫星故障检测能力差的缺点,有更好的故障检测与隔离能力。采集日本多功能GPS卫星星基增强系统(MSAS)数据并对提出的t检验方法进行验证,结果表明,所建立的统计检测量能有效地反应被监测卫星广播UDRE参数的完好性,通过确定卫星99.9%置信度下的判决门限,对广播UDRE与实测UDRE判别,验证伪距误差的可信度。该结果验证了所提方法应用于UDRE核验的可行性,为SBAS完好性验证提供了技术支撑。 展开更多
关键词 星基增强系统(SBAS) 用户差分伪距误差(UDRE) 完好性核验 t检验成对二样本分析法
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抽水蓄能工程生产准备费取费标准探讨 被引量:1
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作者 吴强 张菊梅 袁欢 《人民黄河》 CAS 北大核心 2020年第S02期159-161,共3页
为合理确定抽水蓄能工程生产准备费取费标准,根据已建或在建抽水蓄能工程资料,分别采用执行概算样本分析法和定员标准法对抽水蓄能工程生产准备费取费标准进行测算,结果表明:两种计算的生产准备费费率均超过了现行标准设计概算综合费率... 为合理确定抽水蓄能工程生产准备费取费标准,根据已建或在建抽水蓄能工程资料,分别采用执行概算样本分析法和定员标准法对抽水蓄能工程生产准备费取费标准进行测算,结果表明:两种计算的生产准备费费率均超过了现行标准设计概算综合费率的要求。鉴于此,提出在抽水蓄能工程生产准备费费率设定上区分常规水电和抽水蓄能两种情况,以及将抽水蓄能工程生产准备费费率调整为工程永久设备费的3%左右等建议。 展开更多
关键词 抽水蓄能工程 生产准备费 执行概算样本分析法 定员标准 取费标准
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The Effects of Job Security, Features, Personal Values, and Recognition on Organizational Involvement
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作者 Yacoub Petro Arun Bajracharya 《Chinese Business Review》 2012年第8期740-747,共8页
As extrinsic rewards become very limited under organizational retrenchments, organizations should rely heavily on other types of rewards, such as intrinsic rewards, to improve the performance of those employees who ha... As extrinsic rewards become very limited under organizational retrenchments, organizations should rely heavily on other types of rewards, such as intrinsic rewards, to improve the performance of those employees who have been overwhelmed with a perception of job insecurity. This paper examines the impact of such perception, along with many other positive influencers such as enhancement in job features, recognition, and the personal values of those employees on the organizational involvement. The data analyzed were based on a sample of 34 employee respondents from a project based engineering and service company (identified as ABC Company in this paper) operating in the Middle East. The adopted research approach is basically a quantitative approach. The correlation and regression analysis tools have been used to explore this relationship. The results of this study suggest a generally unnoticed and disregarded resource that has the prime effect on improving and enhancing the organizational involvement, which is the recognition those employees receive from the management. This research suggests that recognition, as the top influencer, has a strong impact on organizational involvement/psychological attachment for the employees. The other factors that have proved to have the second degree influence on organizational involvement are enhancement in job features, increase in the job security level, and personal values. 展开更多
关键词 organizational involvement job features job security VALUES RECOGNITION
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Application of Extreme Value Theory to Generation and Analysis of Pseudorandom Samples
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作者 Svitlana Trukhan Petro Bidyuk 《Journal of Mathematics and System Science》 2016年第4期129-138,共10页
The article deals with the methodology of pseudorandom data analysis. As a mathematical tool for carrying out the research the extreme value theory was used that creates one of the directions in mathematical statistic... The article deals with the methodology of pseudorandom data analysis. As a mathematical tool for carrying out the research the extreme value theory was used that creates one of the directions in mathematical statistics, and is related to investigating the extreme deviations from the median values in probability distributions. Also, the methods for estimating unknown parameters and algorithm of random-number generation are discussed. The models of treatment the extreme values are constructed which are based on machine generated sample and approach is proposed for their future application for constructing forecasting models. 展开更多
关键词 Extreme value theory extreme value threshold simulation and modeling maximum likelihood estimator pseudorandomsample generation.
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Correlation between tobacco and alcohol use and Traditional Chinese Medicine constitutions: an analysis based on a sample from general population of China 被引量:8
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作者 Yangyang Wang Yanbo Zhu +1 位作者 Jie Di Lin Lin 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2013年第5期642-646,共5页
OBJECTIVE:To investigate the relationship between smoking and drinking and constitution types from Traditional Chinese Medicine(TCM)theory.METHODS:The Constitution in Chinese Medicine Questionnaire(CCMQ)was used.A sam... OBJECTIVE:To investigate the relationship between smoking and drinking and constitution types from Traditional Chinese Medicine(TCM)theory.METHODS:The Constitution in Chinese Medicine Questionnaire(CCMQ)was used.A sample of 8448subjects from nine provinces and municipalities was chosen from the database of the TCM constitution and health status survey.Constituent ratio and correspondence analysis were used to find the relationship between smoking and drinking and TCM constitution.RESULTS:There was an association between smokinganddrinkingandtheGentleness,phlegm-dampness,and dampness-heat type constitutions.People that did not smoke tobacco or drink alcohol tended to have Yang-deficiency,Yin-deficiency,Qi-depression,Qi-deficiency,special diathesis,orblood-stasis type constitutions.CONCLUSION:There was a significant correlation between tobacco and alcohol use and TCM constitutions.To improve patient health,more attention should be paid to tobacco and alcohol control. 展开更多
关键词 Medicine Chinese traditional Physical constitution Phlegm-dampness Smoking Alcohol drinking Constitution in Chinese medicine questionnaire Correspondence analysis
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