基于大数据决策分析需求的图书馆大数据清洗系统设计     

马晓亭 《现代情报》2016,36(9):107-111

图书馆的大数据时代已经来临,大数据质量问题是影响图书馆大数据应用的重要因素,而大数据清洗则是提高图书馆大数据质量的主要手段。本文介绍了图书馆不清洁数据的类型与产生原因,设计了基于大数据决策分析需求的图书馆大数据清洗系统,该系统不仅可以提高大数据清洗的效率和精确度,而且大幅度降低了图书馆大数据决策分析的复杂度。  相似文献   

煤矿数据集成技术研究与应用     

赵安新  韩臻  郝秦霞 《技术与创新管理》2007,28(5):85-87,94

本文分析了当前煤炭企业信息化水平低,信息孤岛现象严重,应用系统间相互隔离无法协同工作以及更上层次的集成应用更加困难的问题,提出了数据集成的目标,设计了该系统的体系结构,从而解决了不同平台间异构系统互操作以及数据多级综合利用的问题。并结合本系统的体系结构,详述了系统设计流程、实现过程和模式集成示例。  相似文献   

基于XML技术的报业数字资产管理系统     

王彤 《情报理论与实践》2004,27(4):430-432

详细介绍了基于XML技术的报业数字资产管理系统的设计与实现，重点阐明了使用文件存储管理系统的优势，以及在此基础上如何利用软件机制解决报业海量新闻数据源存储问题的方法，最后简要介绍了该系统对报业的意义。  相似文献   

基于VB的滑动轴承试验系统     

张绍林  武红霞  李瑞珍 《中国科技信息》2006,(19):99-100,102

利用传统的滑动轴承试验台与PC机相结合，设计出了一种新型的滑动轴承试验系统。文中介绍了系统的硬件组成及软件设计。采用模块化结构设计了系统工作的软件部分；采用VB调用动态链接库的方法实现试验数据的采集与处理。系统工作稳定可靠，操作界面简单，试验精度比传统试验台高。  相似文献   

Creating an Ofsted story: the role of early years assessment data in schools’ narratives of progress     

Alice Bradbury  Guy Roberts-Holmes 《British Journal of Sociology of Education》2017,38(7):943-955

This paper explores the growing importance of measures of progress in judgements of schools’ effectiveness in England, with a focus on the role of the early years (settings for children aged 2–5) in providing data for these measures. Qualitative data from a research project involving three diverse school-based and pre-compulsory early years settings are used to explore how teachers and school leaders prioritise the collection of data in their every-day practice, in order to show how children make continual progress. The need for a narrative of progress as children move up through the primary school, an ‘Ofsted story’ for the school inspection service, is discussed alongside recent policy which requires a ‘baseline’ assessment at age four. We argue that there is a reification of progress in schools and early years settings, and that this changes the status of early years within the sector.  相似文献   

The impact of child maltreatment on the risk of deliberate self-harm among adolescents: A population-wide cohort study using linked administrative records     

《Child abuse & neglect》2017

Adolescents exposed to maltreatment have an elevated risk of deliberate self-harm (DSH). The aim of this study was to investigate longitudinally the effects of the number, timing, and type of maltreatment allegations on adolescent risk of having a DSH-related hospital admission, using linked data in Western Australia. A total of 351,372 children born between 1986 and 2000 were followed from birth up to the year 2010. Cox regression models were utilized, while controlling for a range of psychosocial covariates. Compared to children without allegations of maltreatment, children with unsubstantiated allegations only (aHR = 1.04, 95%CI: 1.00–1.08, p < .01) and children with a substantiated allegation (aHR = 1.10, 95%CI: 1.06–1.15, p < .001) all had significantly increased risk of DSH in adolescence. Among children with a substantiated allegation of maltreatment, the greater the number of allegations, the longer the exposure to maltreatment, and the more types of maltreatment experienced by a child, the higher the child's risk of DSH. However, this dose–response pattern was not found among children with unsubstantiated allegations only. This study calls for the early identification of children who are vulnerable to maltreatment, the better identification of the duration and severity of maltreatment experiences, and the provision of continued care and support, to reduce the child's DSH risk in adolescence.  相似文献   

Further victimization of child sexual abuse victims: A latent class typology of re-victimization trajectories     

《Child abuse & neglect》2017

The association between child sexual abuse (CSA) and risk for re-victimization is well-documented; however, less is known about the temporal progression of re-victimization experiences over the early life-course among CSA survivors, and whether this differs from that of those without known sexual abuse histories. This study investigated whether there are distinct temporal pathways of interpersonal re-victimization between the ages of 10–25 years among medically confirmed CSA cases, and considered whether abuse variables, re-victimization variables, and the presence of other adverse outcomes, were associated with heterogeneity in re-victimization pathways. The data were collected as part of a large-scale data-linkage study in which the medical records of 2759 cases of contact-CSA between 1964 and 1995 were linked, between 13 and 44 years following abuse, to police and public psychiatric databases; cases were compared to a matched community sample (n = 2677). Using a subsample of 510 (401 victims; 109 comparisons) individuals with an interpersonal (re)victimization history, we examined the aggregate ‘age-(re)victimization’ curves for CSA victims and comparisons, respectively. Further, we applied longitudinal latent class analysis to explore heterogeneity in re-victimization trajectories among abuse survivors across their early life-course. Four latent pathways were identified, labeled: Normative; Childhood-Limited; Emerging-Adulthood; and Chronic re-victimization trajectories. Older age at abuse, a criminal history, and mental health problems were uniquely predictive of membership to the more problematic and persistent re-victimization trajectories. Findings indicate that individuals exposed to CSA during adolescence may be particularly vulnerable to poorer re-victimization trajectories, characterized by multiple risk indices, and thus may warrant increased service provision.  相似文献   

基于Web服务的企业应用集成研究     

刘鲁平 《金华职业技术学院学报》2007,7(4):40-43

针对企业信息化过程中存在的"信息孤岛"现象,提出信息集成解决方案,分析企业信息集成的方式和层次,通过引入Web服务和语义Web技术,构建了企业应用集成的两个应用模型,即基于Web服务的EAI模型和基于语义WEB服务的EAI模型,并阐述了模型的组成结构运行机制,以满足企业应用集成需要.  相似文献   

数字化校园建设中的应用集成研究     

郑勇杰 《南宁职业技术学院学报》2010,15(2):96-100

随着信息化应用的不断深入,高校内部、高校与外部信息交互的需求日益强烈,急切需要对已有的信息进行整合。但是由于数字化校园建设的自身特点,数字化校园的建设从"有路无车"变成"交通混乱"现象,各种信息(如财务信息、各种计划信息等)无法或者无法顺畅地在部门与部门之间流动,致使信息资源使用不便。通过对数字化校园建设中的应用集成方法进行研究,明确了各系统的应用集成是解决这一问题的有效措施。  相似文献   

大数据时代下的翻转课堂新解读     

蒋翠 《教育教学论坛》2019,(4):235-236

当今社会正处于快速发展的大数据时代,大数据时代更加强调网络信息技术以及数据信息在人们生活和学习中的实际运用,这一时代背景最鲜明的体现便是翻转课堂在教学中的应用。本文对大数据时代下的翻转课堂进行了全新解读,着重探讨了翻转课堂的含义与由来、特征与优势、反思与展望。  相似文献