基于数据驱动原理的新型计算机系统结构的可行性分析     

姚若侠 《渭南师范学院学报》2001,16(2):48-51

本文通过对传统的基于存储程序原理的冯·诺依曼计算机和基于数据驱动原理的新型计算机系统结构的数据流计算机的比较以及对数据流计算机的性能的分析,得出这种还处在萌芽阶段的数据流计算机是可行的,也是具有发展潜的.  相似文献   

基于LabVIEW的振动实验控制与数据采集系统   总被引：4，自引：0，他引：4  

宋振华  李素有  杜小军 《实验技术与管理》2006,23(5):72-74

开发了一种基于虚拟仪器的振动实验控制与数据采集系统，对机械振动信号进行实时的数据采集处理、波形显示、信号存储、信号分析以及再现。利用LabVIEW的CLF节点词用动态链接库驱动并控制运动控制卡，通过虚拟面板对振动实验台的数字伺服电机进行自动控制进而达到控制实验台的运转目的。系统具有简洁友好的人机界面，直接在软面板上完成各种操作。  相似文献   

灰色马尔科夫模型在高校招生中的应用研究     

冯晓林  王岁花 《教育教学论坛》2019,(24):44-46

本研究深入剖析了灰色马尔科夫模型在高校招生中的应用,由于高校生源变动的随机性、波动性以及复杂性,给招生预测工作带来了很多瓶颈。为了更准确地预测招生人数,我们将试图把灰色动态预测与马尔科夫预测模型融为一体,对高校招生人数进行预测。选取河南师范大学部分新生历年录取入学情况为研究对象,采用数据收集法、实验分析法、灰色马尔科夫模型等技术发掘数据中隐藏的规律和模式,从而为高校招生工作提供科学的依据。  相似文献   

Examining Intermediate Omitted Levels in Hierarchical Designs via Latent Variable Modeling     

Tenko Raykov  Thanos Patelis  George A. Marcoulides  Chun-Lung Lee 《Structural equation modeling》2016,23(1):111-115

This article outlines an interval estimation procedure that can be used in a 3-level setting to evaluate the proportion of outcome variance attributable to the second level of clustering. The method is useful for examining the necessity of including a possibly omitted intermediate level of nesting in analyses of data from a multilevel study, and represents an informative addendum to current statistical tests of second-level variance. The approach is developed within the framework of latent variable modeling and can be used as an aid in the process of choosing between 2-level and 3-level models in a hierarchical design. The discussed procedure is illustrated with an empirical example.  相似文献   

Making sense of learner and learning Big Data: reviewing five years of Data Wrangling at the Open University UK     

Bart Rienties  Simon Cross  Vicky Marsh  Thomas Ullmann 《Open Learning》2017,32(3):279-293

Most distance learning institutions collect vast amounts of learning data. Making sense of this ‘Big Data’ can be a challenge, in particular when data are stored at different data warehouses and require advanced statistical skills to interpret complex patterns of data. As a leading institute on learning analytics, the Open University UK instigated in 2012 a Data Wrangling initiative. This provided every Faculty with a dedicated academic with expertise data analysis and whose task is to provide strategic, pedagogical and sense-making advice to staff and senior management. Given substantial changes within the OU (e.g. new Faculty structure, real-time dashboards, two large-scale adoptions of predictive analytics approaches, increased reliance on analytics), this embedded case study provides an in-depth review of lessons learned of five years of data wrangling. We will elaborate on the design of the new structure, its strengths and potential weaknesses, and affordances to be adopted by other institutions.  相似文献   

How to measure research efficiency in higher education? Research grants vs. publication output     

Sabine Gralka  Klaus Wohlrabe  Lutz Bornmann 《Journal of Higher Education Policy & Management》2019,41(3):322-341

An ongoing debate in the literature on the efficiency of higher education institutions concerns the indicator for research output for use in empirical analysis. While several studies have chosen to use the number of publications as this indicator, others rely on the amount of research grants. The present study investigates whether both measures lead to a similar assessment of universities. In addition, the number of publications belonging to the 10% and 1% most frequently cited papers in the corresponding subject category and publication year are evaluated. We show that there is a high correlation of efficiency values between the estimations using these indicators. This correlation is slightly higher when the efficiency values result from a data envelopment analysis than when they are determined with a stochastic frontier analysis. The results of this study provide helpful guidelines for researchers evaluating the efficiency of universities and are valueable for decision-makers in science policy.  相似文献   

科学计算中辅助技术探讨     

周少华 《中山大学学报论丛》1996,(5)

科学计算中辅助技术是计算机科学发展到一定阶段而提出的一个很有实际意义的课题．本文针对科学计算过程探讨了工程数据库技术和可视计算技术  相似文献   

线性网络幅频特性的自动测量     

沈跃  马君  黄延军 《实验室研究与探索》2004,23(10):24-27

介绍了利用精密二极管检波测量线性阻抗网络幅频特性的方法以及由计算机数据采集系统组成的自动测量装置，数据测量结果分析表明，该方法的测量误差在3％以内。完全可代替常规的交流测量法，该方法配合高稳定性、快速跟踪的压控振荡器VCO可实现宽频范围内的快速扫频自动测量。  相似文献   

Web日志挖掘技术在校园网信息处理中的应用研究     

张琳 《遵义师范学院学报》2011,13(5):112-115

随着校园网的快速发展,产生了海量信息,怎样利用数据挖掘技术根据校园网用户的访问日志挖掘出有价值的信息,是值得深入研究的。作者首先介绍了Web日志挖掘技术的主要内容,再深入研究在校园网信息处理方面的应用,重点以遵义师范学院校园网为实例,使用关联规则进行研究分析,探讨出用户的兴趣与偏好,从而更好地为学校教学管理服务。  相似文献   

XML安全技术在石材信息检索系统中的应用     

陈明忠 《广东职业技术师范学院学报》2011,(12):17-20

XML是一种面向数据的标记语言,具有结构严谨,简单易用等优点,己成为数据交换的标准．本文首先阐述了XML的特点,语言规范和应用领域,然后从XML加密,XML数字签名,以及XML公钥管理技术三个方面对XHL的安全技术进行了讨论。并组建了XML数据交换平台架构．在此基础上,给出了XML安全技术在石材信息检索系统中的应用．以及系统的需求分析和功能模块设计．  相似文献