螺旋伞齿轮半展成法加工的铣削工具   总被引：1，自引：0，他引：1  

李玮华 《石家庄职业技术学院学报》2001,13(4):19-20

介绍了2种在普通铣床上加工大小螺旋伞齿轮的铣削装置,该装置依据半展成法的原理实现加工,其结构是在通用铣床的标准附件回转工作台和万能分度头的基础上进行改装设计而成的.并阐述了用此工装加工大小螺旋伞齿轮的铣削过程.  相似文献   

The influence of reading unit size on the development of Stroop interference in early word decoding     

Paula J. Schwanenflugel  Robin D. Morris  Melanie R. Kuhn  Gregory P. Strauss  Jennifer M. Sieczko 《Reading and writing》2008,21(3):177-203

The purpose of the experiments was to determine the automatic use of large or small word reading units in young readers in the absence of word decoding strategies. Picture-word Stroop interference was examined from four types of conflicting labels: (a) words containing both highly predictable grapheme–phoneme correspondence (GPC) units and highly consistent rime units (henceforth, Hi-GPC + Hi-Rime); (b) words with highly predictable GPC units and less consistent rime units (Hi-GPC + Lo-Rime); (c) words with low predictability GPC units and highly consistent rime units (Low GPC + High Rime); (d) nonwords that contained both highly predictable GPC and highly consistent rime units. Naming time for pictures containing these labels was compared against that for pictures with random letter strings or no labels. In Experiment 1, Stroop interference was examined in first, second, and third grade children to determine whether there was developmental change in the presence of rime or GPC interference. In Experiment 2, Stroop interference was examined as a function of relative reading skill in first grade children. In Experiment 3, Stroop interference in adults was compared to the use of rime or GPC pronunciation strategies for nonword reading. In all experiments, Stroop interference in picture naming was longer for pictures with highly predictable GPC unit labels than less predictable GPC unit labels. However, in Experiment 3, even though adults showed interference from predictable GPC units in the Stroop task, they always preferred rime pronunciation for ambiguous nonwords in the nonword reading task. It is argued that the current experiments provide evidence for a flexible units model. The results of this study were presented at the Cognitive Development Society meeting, November 2001, Virginia Beach, VA, and the American Educational Research Association meeting, April 2004, San Diego, California.  相似文献   

提取成功与提取努力的神经机制探讨     

孟迎芳 《宁波大学学报(教育科学版)》2008,30(6):48-53

提取成功和提取努力是情节记忆提取过程中所包含的两个重要加工成分。以往研究表明,在提取过程中所一致激活的脑区包括内例颞叶、前额皮层和后顶皮层,其中内侧颞叶与后顶皮层主要负责成功提取,而前额皮层与提取努力的联系更为密切一些。但不同脑区的不同部位可能对提取加工有着不同的贡献,未来研究将进一步细化它们的具体功能。  相似文献   

基层科技报告资源建设中元数据质量评估研究——以中国科学技术信息研究所为例     

宋立荣 《中国科技资源导刊》2016,(1):57-66

我国各级科技管理部门正积极推进国家科技报告资源建设工作.在这过程中,基层科研单位作为科技报告资源建设的生产源头,是保证科技报告质量的关键环节,尤其是元数据质量建设起到十分重要的作用.为此,文章就科技报告元数据项要素进行分析,对其元数据质量评估确定基本内容,提出从完整性、准确性和一致性等维度进行质量评估.最后,以中国科学技术信息研究所内部约410份科技报告资源为例,通过调查统计、评估分析其元数据质量情况.  相似文献   

浅论事业单位改革的必要性及改革取向     

吕召强 《黄石理工学院学报(人文社科版)》2003,20(3):10-12,16

本文探讨了事业单位改革的必要性及改革取向，对于三类事业单位的改革作了提纲契领的论述。  相似文献   

N个不同单元的可维修并联系统的可用度分析   总被引：1，自引：0，他引：1  

罗昌由 《衡阳师范学院学报》2004,25(3):26-29

本文在N=2和N=3两种特殊情况下，分别对不同单元的可维修并联系统的可用度进行了深入的讨论。从而初步对N个不同单元的可维修并联系统的可用度进行了分析。  相似文献   

Humanizing paediatric care     

Ian C. Lewis M.D.  F.R.C.P.  F.R.A.C.P.  D.P.H.  D.C.H. 《Child abuse & neglect》1983,7(4):413-419

This paper deals with the development of a paediatric team approach to the care of children in the 70 bed paediatric unit in the Royal Hobart Hospital in Tasmania, Australia, and describes the measures used to help children and their parents adapt to life in hospital with a limited budget. The staff includes paediatricians and pediatric surgeon, resident staff, nurses, teachers, social worker, physiotherapist and pharmacist. There are no visiting hours but the wards are open to parents and relatives at any time. Parents are encouraged to stay in hospital and their accommodation is either in flats at the end of wards or in single or double bed wards using foldup beds. Each young child has a personal details form completed and placed on the end of the cot allowing a nurse to discover likes, dislikes, methods of feeding and sleeping, etc. Parents are asked to complete questionnaires at the time of the child's discharge, asking for their assessment of the standards of care their child received. Playleaders are rostered for evenings and weekends and they work with, and direct Red Cross volunteer ladies. Two full-time teachers cooperate with the child's school in maintaining the child's educational progress. Volunteer visitors entertain children whose relatives are unable to visit or stay in hospital. The methods used to raise the standards of paediatric nursing are also described. Community groups, particularly kindergarten and primary school children, are encouraged to visit the paediatric unit and each group is usually given a brief health education talk by a member of staff.  相似文献   

用Mathematica绘制几何图形     

李敏 《怀化学院学报》2007,(2)

介绍了Mathematica在几种几何图形绘制中的应用,提出了获得空间旋转曲面的参数方程的一般方法,并给出了用Mathematica绘制空间旋转曲面的实例的源代码.  相似文献   

GK型等强度钢筋锥螺纹接头技术在工程中的应用          下载免费PDF全文

冯全  黄东  谭丽清 《惠州学院学报》2001,21(4):119-121

本文通过工程实例, 介绍了等强度钢筋锥螺纹接头的施工工艺及其使用所取得的效果.  相似文献   

创新农村基层公共行政管理激励机制     

郭华 《闽江学院学报》2005,26(3):58-62

创新农村基层公共行政管理激励机制是行政体制改革的重要内容，农村基层公共行政管理应从强化激励机制的价值理念、激励目标、激励制度和绩效考核体系入手，构建以竞争机制为重点的公务员制度的运行机制，为实现人的全面发展，在培训激励、参与激励以及监督和制约的负激励等方面努力进行创新。  相似文献