共查询到20条相似文献,搜索用时 156 毫秒
1.
医疗器械检验机构检验检测数据准确性的影响因素分布在诸多工作环节,只有明确具体的影响因素,才能采取有效的措施做好数据准确性的保护。分析对医疗器械机构检验检测数据准确性产生影响的因素,提出对策建议,以满足数据的准确性要求。 相似文献
2.
3.
随着科研和生产技术的不断发展,各类科研机构和生产企业的检验技术逐渐从手工分析发展到仪器分析,实验室的检验项目和数据处理量也急速增加大量增加,同时,实验室在样品数量、分析周期、分析项目、数据的准确性和报出时间等方面的要求变得越来越严格,数据处理量急速增加,在这种情况下,原来原有的人工管理模式在这种形式下已经显得 相似文献
4.
刘朝晖 《石油工业技术监督》2006,22(12):37-38
为了提高石油行业清防蜡剂检验数据的准确性和再现性,提高清防蜡剂监督检验的整体水平,通过对清防蜡剂检验方法标准进行分析,提出了检验方法标准在实际应用中应注意的问题及操作方法。 相似文献
5.
6.
7.
8.
9.
为加强对棉花质量的监督管理,推动棉花市场稳定发展,保护棉花交易各方的合法权益,国务院颁布并多次修订了《棉花质量监督管理条例》.棉花检验结果直接影响到棉花最终的交易价格,关乎各方经济利益.因此,对棉花检验数据的准确性提出了更高要求.基于此,文章通过阐述相关概念,剖析棉花杂质的类型及形成原因,并提出加强检验质量的保障措施,... 相似文献
10.
11.
12.
This study empirically analyzes model accuracy, and applies grey forecasting to handle non-linear problems, insufficient data resources and forecasting involving small samples, and to construct the co-opetition diffusion model for the Lotka–Volterra (L.V.) system. Furthermore, this study examines historical data comprising revenue trends in the Taiwanese IC assembly industry during the past ten years and selects from a range of forecasting models.Empirical study uses MAPE to precisely analyze revenue trends in the L.V. dynamic co-opetition diffusion model relation to the IC assembly industry. The nine companies will be selected from 4 to 11 of the modeling, the results of the LV model 64 accuracy test, its accuracy is higher than 95% accounted for 59 times, five times better than the grey prediction, showing LV competing diffusion model not only with grey prediction, and better than the traditional grey forecasting model to make a higher accuracy of the predicted value. Like grey forecasting, MAPE can promptly respond even given insufficient data. Additionally, MAPE is able to provide more accurate forecasting values than the traditional Grey forecasting model. This study demonstrates the applicability of the dynamic co-opetition theory forecasting model to the Taiwanese IC assembly industry and provides management with a reference for use in decisions aimed to increase managerial competitiveness. 相似文献
13.
为确保石家庄市大气颗粒物源解析研究数据的准确性和精密性,首先结合城市自然环境、能源结构、大气环境质量现状等进行合理布点采样,同时在大气颗粒物样品采集、滤膜称量、化学组分分析等监测过程中实施了空白分析、实验室平行样分析、标准曲线绘制与核查、加标回收、有证标准物质核查等一系列质量保证措施,通过对这些质量保证措施实施情况的阐述与质量控制数据的统计、计算与分析,证明了该大气颗粒物源解析监测工作从样品采集及其称量到化学组分分析等全过程是真实有效的,表明了石家庄市大气颗粒物源解析监测数据的准确性和监测工作的可靠性。 相似文献
14.
This paper shows that (1) the principle of substitution has been misinterpreted in regression analysis on residential homes by the misuse of the confidence interval; (2) the proper confidence interval to judge the accuracy of the equation is the mean CI; and (3) the accuracy of the equation can be improved by applying factor analysis to the entire data set rather than a predetermined neighborhood. These results are illustrated in a sample of 571 residential sales in Northwest Arkansas during 1975. The data are divided into clusters, and a regression equation is computed for each. The results show that the mean confidence interval is the correct application of the principle of substitution. The correct decision rule to determine the superiority of the multi-equation or the single equation model compares the explained to the unexplained variation. These results should allow the appraiser to select properties that are better suited for comparison. This will improve the accuracy of the regression analysis and resulting estimates of property value. 相似文献
15.
National data indicate that there was almost no change in the accuracy of body weight assessments of overweight women over the past 20 years. The accuracy in weight assessment is influenced by a number of social-demographic and economic factors; many of them have opposite effects and cancel out each other. This paper examines changes in misperception of body weight among overweight women in the United States, using data from the 1988–1994 and 1999–2004 National Health and Nutrition Examination Survey. Changes in characteristics of the population, such as the increased share of Hispanics in the US population, between these two time periods explain only a small portion of the changes in the accuracy of body weight assessment. Most of the differences come from changes in the association between population characteristics and the likelihood an overweight woman underestimates her weight status. Results also indicate that overweight women who receive benefits from the Supplemental Nutrition Assistance Program (formerly Food Stamp Program) are consistently more likely to misperceive themselves as healthy weight or underweight than higher income overweight women. 相似文献
16.
通过理论叙述、推理与实际检定数据对比分析的方法,说明了原油流量计在线计量交接中,流量计的检定温度与其实际运行温度不同时,对流量计准确度的影响程度,并提出了参考值。 相似文献
17.
为了研究支持向量机在人脸识别中的应用,提出了人脸识别框架,该框架首先利用特征向量提取算法对人脸进行特征提取,得到人脸面部纹理特征数据,然后采用支持向量机对提取的数据进行训练,得到人脸模板,并依据人脸模板对人脸进行识别。实验采用ORL人脸数据库作为实验数据,使用LBP算法提取特征向量,使用LIBSVM训练得到人脸模板数据库,当模板人脸数与预测人脸数比值一定时,随着人数增加,其预测的正确率会有所下滑;当人数一定时,人脸模板与预测人脸数值上升,其正确率会有所上升。当选择一个相对合适的模板比例时,正确率将会达到89.29%以上。实验结果表明,提出的框架对于人脸具有良好的识别能力。 相似文献
18.
通过对原始数据进行筛选,将GM(1,1)模型用于股票预测,对交易日收盘价格进行预测,并以中国石化(600028)2012-01-04至2012-12-31的交易数据为例进行了分析。分析结果表明,灰色预测模型的平均预测准确度为98.63%。考虑到股票交易规则,42%的预测数据为有效预测,有效预测的平均预测准确度为99.31%。 相似文献
19.
王术明 《石油工业技术监督》2008,24(9):15-18
在油田原油的开采、集输及交接计量中,原油液量和含水率是油田生产的重要指标。近年来随着含水上升速度加快,吨油成本逐年提高,对分队计量数据的准确性提出了更高的要求,如何运用先进计量技术及工艺技术提高分队计量准确度,及时发现生产中存在的问题,科学合理地考核采油队原油任务完成情况,充分调动采油队原油生产的积极性,提高采油厂的经济效益,已成为计量工作亟待解决的问题。介绍了分队计量系统组成及射频含水仪工作原理,综合分析了影响分队计量准确度的主要因素,研究探讨了降低分队计量误差的措施。 相似文献
20.
地震检波器测试仪的电磁敏感性影响到量值的准确,为了避免环境电磁干扰保证检波器串测试数据准确,根据近几年校准、调研、试验和统计分析,对使用单位提出了可靠和有效的解决办法。 相似文献