The Impact of More,Better, Faster,Cheaper: How the PCC Influenced Everything That Followed     

Carol G. Hixson 《Cataloging & classification quarterly》2020,58(3-4):294-302

Abstract

The beginnings and the early years of the Program for Cooperative Cataloging (PCC) had a profound impact on the approach taken to cataloging in North America and around the world. The commitment to standards, cooperation, and expanded access also had an impact that went far beyond cataloging operations. One library dean traces the evolution of her vision and contemplates how the PCC’s principles have shaped her entire career and have affected the libraries in which she has worked.  相似文献   

Study Abroad Experience and Career Decision-Making: A Qualitative Study of Chinese Students     

WU Yihan 《Frontiers of Education in China》2020,15(2):313

  相似文献   

Data Visualization as Participatory Research: A Model for Digital Collections to Inspire User-Driven Research     

A. Miller 《Journal of Web Librarianship》2019,13(2):127-155

The emerging creative practices of digital collections are increasing in prominence thanks to the access to, and appeal of, data visualizations. Interactive data visualizations, such as a map, timeline, chart, graph, or artist’s rendering of data, enable users to pursue their own research interests within a collection and participate in new areas of research. Use of these data visualizations enhances the scope of the collection and enables a modern and diverse thematic collection to emerge. This article considers the question: Does the addition of data visualizations affect how users participate with a research collection? Impacts on collection development, application of user-centered design, and analysis of users’ exploratory strategies are discussed. Examples of data visualizations used in digital humanities projects and digital collections are presented as case studies.  相似文献   

Influence of Process Parameters on Chlorinated Biocide Decontamination by li-CO2 on Artificially Contaminated Model Materials     

Tiziana Lombardo  Marie Wörle  Vera Hubert  Erwin Hildbrand  Christina Hinterleitner  Ingo Mayer 《文物保护研究》2020,65(2):65-76

ABSTRACT

Previously, heavy use of biocides for the treatment of objects made of organic materials in museum collections (e.g. ethnographic, historical collections) was very common. Now suitable decontamination methods/technologies are being sought. A decontamination treatment by li-CO₂ was optimized that considered the specific requirements of museum objects. The treatment was tested on model materials artificially contaminated with biocide solutions containing dichlorodiphenyltrichloroethane (DDT), pentachlorophenol (PCP), lindane, and permethrin or cypermethrin. High decontamination was achieved for DDT, lindane, PCP, and permethrin on artificially biocide loaded wool and wood model materials. Optimal process parameter settings for li-CO₂ decontamination include a single 30?min cycle for woolen materials and three sequential 30?min cycles each for wood. These methods allow a reduction of at least 90% of all biocides for wool and between 70% and 85% for wood. Decontamination of the latter was more effective for less polar biocides as DDT and permethrin. Despite a significant improvement in decontamination for wood using co-solvents such as acetone, ethanol, and methyl tertiary-butyl ether (MTBE), their use is not recommended due to the increased risk of damage to the objects, in particular if a surface coating is present.  相似文献   

Location extraction from tweets     

Thi Bich Ngoc Hoang  Josiane Mothe 《Information processing & management》2018,54(2):129-144

Five hundred million tweets are posted daily, making Twitter a major social media platform from which topical information on events can be extracted. These events are represented by three main dimensions: time, location and entity-related information. The focus of this paper is location, which is an essential dimension for geo-spatial applications, either when helping rescue operations during a disaster or when used for contextual recommendations. While the first type of application needs high recall, the second is more precision-oriented. This paper studies the recall/precision trade-off, combining different methods to extract locations. In the context of short posts, applying tools that have been developed for natural language is not sufficient given the nature of tweets which are generally too short to be linguistically correct. Also bearing in mind the high number of posts that need to be handled, we hypothesize that predicting whether a post contains a location or not could make the location extractors more focused and thus more effective. We introduce a model to predict whether a tweet contains a location or not and show that location prediction is a useful pre-processing step for location extraction. We define a number of new tweet features and we conduct an intensive evaluation. Our findings are that (1) combining existing location extraction tools is effective for precision-oriented or recall-oriented results, (2) enriching tweet representation is effective for predicting whether a tweet contains a location or not, (3) words appearing in a geography gazetteer and the occurrence of a preposition just before a proper noun are the two most important features for predicting the occurrence of a location in tweets, and (4) the accuracy of location extraction improves when it is possible to predict that there is a location in a tweet.  相似文献   

听力语篇的多维解读——兼谈主述位结构在听之中的作用     

谷新黎 《梧州学院学报》2007,17(1):99-102

基于语篇的教学思想倡导"语言即语篇",把语言当作语篇来进行教学,这就要求在教与学中建立语篇概念.语篇作为多功能的构建体具有多重维度,即语言、社会和认知维度.听力语篇多维解读可体现在听之前、听之中、听之后的教学过程中,其中主述位结构在听之中语篇教学的整体理解中有着重要作用.  相似文献   

抗疫期间学生居家主题式教学的实践探索     

郑晓燕 《成才之路》2021,(14):46-47

疫情防控时期,延迟开学,在“停课不停教,停课不停学,停课不停研”的背景下,有效组织一年级学生居家学习。通过开展线上主题教育、心理疏导、课程辅导答疑等活动,引导学生从科学和人文角度看待疫情,学会敬畏生命,激发爱国情怀,注重自我管理的养成教育,提升学生的学习能力。  相似文献   

英语招聘广告语篇的主位结构分析   总被引：1，自引：0，他引：1  

史媛 《乌鲁木齐成人教育学院学报》2007,15(4):26-29

文章以系统功能语法为基础,从三大纯理论功能的语篇功能出发,对英语招聘广告的主位及其推进模式进行了分析研究,并由此总结出此类广告主要采用的语篇模式,从而论证结构及推进模式对于不同类型语篇分析的可操作性和重要性。  相似文献   

Off with a theme: Emergent curriculum in action     

Marilyn A. Sheerer  Ernest Dettore  Jennifer Cyphers 《Early Childhood Education Journal》1996,24(2):99-102

Early childhood teachers can plan developmentally appropriate classrooms through a fusion of thematic and emergent curriculum approaches. Ernie, a preschool teacher/university professor working in a campus laboratory setting, designed and implemented a space theme which was relevant to young children, allowed them many opportunities to demonstrate their knowledge and skills and expand upon them in significant ways, and incorporated a variety of materials and resources. Overall, the use of this theme reflected the initial and emergent interests of both the teachers and children, as they interacted in the social environment.  相似文献   

基于科技藏品的科技博物馆传播策略初探          下载免费PDF全文

范振翔 《自然科学博物馆研究》2019,(5):51-55

科技藏品在科技博物馆中的地位随着时代变迁与教育理念的变化在不断变化。科技藏品除了具备与互动性科学展品共有的科学性之外,还具备基于历史的真实性、信息传播的多维性和收藏价值的凸显性。并据此提出了五种科技藏品的科学传播策略:情境再现法、布局突出法、对比分析法、协同展示法、故事讲述法。  相似文献