发挥技术优势 服务冶金工业     

昆明冶金研究院 《云南科技管理》2010,23(6)

<正>昆明冶金研究院创建于1953年,是国家级企业技术中心——云南冶金集团股份有限公司技术中心的核心研发机构,是云南省选冶新技术重点实验室、国家博士后科研工作站、国家科技部国际合作基地的依托单位,同时也是云南省湿法冶金工程技术研究中心、云南省铝电解节能减排工程技术研究中心和云南省铅冶金工程技术研究中心的主要依托单位,拥有云  相似文献   

Word-learning skills of deaf preschoolers: the development of novel mapping and rapid word-learning strategies   总被引：2，自引：0，他引：2  

Lederberg AR  Prezbindowski AK  Spencer PE 《Child development》2000,71(6):1571-1585

Word-learning skills of 19 deaf/hard-of-hearing preschoolers were assessed by observing their ability to learn new words in two contexts. The first context required the use of a novel mapping strategy (i.e., making the inference that a novel word refers to a novel object) to learn the new words. The second context assessed the ability to learn new words after minimal exposure when reference was explicitly established. The children displayed three levels of word-learning skills. Eleven children learned words in both contexts. Five were able to learn new words rapidly only when reference was explicitly established. Two children did not learn new words rapidly in either context. The latter seven children were followed longitudinally. All children eventually acquired the ability to learn new words in both contexts. The deaf children's word-learning abilities were related to the size of their vocabularies. The present study suggests that word-learning strategies are acquired even when children are severely delayed in their language development and they learn language in an atypical environment.  相似文献   

分子考古学的动向—意味深长的遗骸     

Ross  PE 宋继珍 《科学中国》1992,(9):57-66

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The role of gender constancy in early gender development     

Ruble DN  Taylor LJ  Cyphers L  Greulich FK  Lurye LE  Shrout PE 《Child development》2007,78(4):1121-1136

Kohlberg's (1966) hypothesis that the attainment of gender constancy motivates children to attend to gender norms was reevaluated by examining these links in relation to age. Ninety-four 3- to 7-year-old children were interviewed to assess whether and how constancy mediates age-related changes in gender-related beliefs. As expected, results indicated a general pattern of an increase in stereotype knowledge, the importance and positive evaluation of one's own gender category, and rigidity of beliefs between the ages of 3 and 5. Moreover, the stability phase, rather than full constancy, mediated some of these relations. After age 5, rigidity generally decreased with age, with relations primarily mediated by consistency.  相似文献   

高温气冷堆球形燃料元件规模化制造关键技术研发及应用     

清华大学核能与新能源技术研究院核燃料元件研究团队 《科技成果管理与研究》2020,15(2):70-73

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基于洞穴之喻理论模型的重大负面学术事件演化研究     

吴志祥  武璇  肖倩茹  付慧真  黄颖  南京工业大学经济与管理学院  江苏南京  广州大学计算科技研究院  广东广州  浙江大学公共管理学院  浙江杭州  武汉大学信息管理学院  湖北武汉 《情报理论与实践》2022,45(5):46-52

[目的/意义]由学术不端行为发酵、演变而来的重大负面学术事件(Major Negative Academic Events, MaNAE)给学术共同体、学科发展甚至国家学术声誉带来难以估量的损失。现有研究缺乏对MaNAE产生、扩张及消退的演化过程与参与主体行为机制的深入探讨。[方法/过程]针对MaNAE的多主体、多要素及复杂、动态演进的特征,文章借鉴《理想国》的洞穴之喻,探索性地构建了洞穴之喻(the Allegory of the Cave, AoC)理论模型,辅以描述性时间序列分析方法、分类统计分析方法、全文引文情感分析方法以及内容分析法,展开对MaNAE的量化研究。以安维萨心脏干细胞造假事件为例展开单案例纵向时序研究,基于事件核心人物产出分析学术洞穴演化过程,基于政府基金支持的变化分析反馈效应,基于学术共同体情感分化探讨洞穴演化机制。[结果/结论]结果表明,AoC理论模型较好地阐释了研究问题,为负面学术事件的演化研究提供了新的阐释框架,具有一定的理论与实践意义。  相似文献   

Epistemic states and traits: preschoolers appreciate the differential informativeness of situation-specific and person-specific cues to knowledge     

Brosseau-Liard PE  Birch SA 《Child development》2011,82(6):1788-1796

Previous research has demonstrated that preschoolers can use situation-specific (e.g., visual access) and person-specific (e.g., prior accuracy) cues to infer what others know. The present studies investigated whether 4- and 5-year-olds appreciate the differential informativeness of these types of cues. In Experiment 1 (N = 50), children used others' prior labeling accuracy as a cue when learning labels for, but not the visual identity of, hidden objects. In Experiment 2 (N = 64), with both cues present, children attended more to visual access than prior accuracy when learning the visual identity of, but not labels for, hidden objects. These findings demonstrate that children appreciate the difference between situation- and person-specific cues and flexibly evaluate these cues depending on what information they are seeking.  相似文献   

2020全国党报融合传播指数报告     

人民网研究院 《传媒》2021,(2):8-12

2017年,人民网研究院研究构建了党报融合传播指数指标体系,并首次发布全国党报融合传播指数报告.2020年9月,通过抓取当年1月1日-8月15日全国三级党报纸报、网站、微博、微信、自有新闻客户端、入驻聚合客户端、入驻抖音平台、入驻喜马拉雅FM的相关数据,人民网研究院对全国377家党报的融合传播情况进行考察,力求客观呈现党报融合传播的现状及特点.数据采集由北京人民在线网络有限公司完成.  相似文献   

Comparison of power and EMG during 6-s all-out cycling between young and older women     

CR Duffy  D Stewart  F Pecoraro  PE Riches  D Farina  A Macaluso 《Journal of sports sciences》2012,30(12):1311-1321

Abstract To investigate the effects of ageing on the neural control strategies governing sprint cycling on a friction-loaded cycle-ergometer, 10 older (aged 70-83yr) and 8 young (aged 19-35yr) healthy women completed seven 6-s all-out cycling trials against varying loads. Root mean square (RMS), median frequency and muscle fibre conduction velocity were determined from the vastus lateralis of the dominant limb during each pedal stroke. Peak power was 43% lower in the older group compared to the younger (p??0.05). ΔRMS from the first to the sixth second during each trial was found to increase significantly with the development of power output in both groups (p?相似文献   

2019年度中国企业海外形象调查分析报告——以拉美五国为调查对象     

当代中国与世界研究院课题组  翟慧霞 《对外大传播》2020,(1):29-31

一、调查基本情况,新世纪以来,中拉关系得到了全面快速发展,逐步形成了全方位、宽领域、多层次的合作伙伴关系。当前中拉高层交往频繁,政治互信不断加深,整体合作取得历史性突破,中拉关系已经进入全方位发展的新时代。为了更好地了解中国企业在拉美地区的形象,2019年6月至8月,当代中国与世界研究院联合中国报道杂志社与凯度(Kantar China)共同在拉美五国开展了第6次中国企业海外形象调查。调查国家包括阿根廷、巴西、智利、墨西哥、秘鲁。  相似文献