首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 578 毫秒
1.
ABSTRACT

Reaching and teaching users in the diffuse, multigadget, online/mobile world is a significant challenge facing libraries. This article discusses how the ANimated Tutorial Sharing Project (ANTS) production model provides libraries with a sustainable approach to building large numbers of multimedia learning objects that are useful beyond one library. It will also discuss how ANTS file conversion and syndication efforts mean that these learning objects (1) can be made highly visible to users accessing content via a computer or smart phone and (2) enable libraries to establish a meaningful electronic presence for the purpose of providing point-of-need information literacy.  相似文献   

2.
《文物保护研究》2013,58(3):136-142
Abstract

Various desalination methods had been used in the past to treat a large collection of archaeological iron objects. In order to establish whether desalination treatments had been effective, the condition of the objects was assessed and the data analyzed using statistical methods. It was found that objects which had been treated using desalination methods were less likely to re-corrode, and the conclusion was that the development of more effective techniques of chloride removal would be useful.  相似文献   

3.
《文物保护研究》2013,58(4):326-337
Abstract

Although desalination of archaeological iron reduces its chloride concentration and enhances object stability, the reduction in corrosion rate that this produces has never been quantified. This study measures post-treatment corrosion rates in accelerated corrosion environments to identify the impact of removing chloride ions on corrosion rate. Thirty-five archaeological iron nails, treated individually in either alkaline sulphite or nitrogen-deoxygenated sodium hydroxide, were exposed to 75°C and 75% relative humidity together with 31 untreated objects from the same archaeological sites. Object weight change and visual examination of physical change before and after the test period were used to monitor corrosion. 77% of treated objects showed no weight gain and no visible signs of corrosion, while 90% of untreated objects did corrode. The impact of chloride on corrosion of untreated objects was clearly established by a significant linear correlation between chloride content and weight gain. Treated objects with <400 ppm chloride content showed no corrosion behaviour. Corrosion of treated objects was attributed to incomplete treatment: 93% of objects treated to <5 mg/l Cl? in the final solution bath displayed no corrosion behaviour. Based on these results, desalination of iron objects to enhance their stability offers a valuable option for reducing corrosion rates of archaeological iron, which should increase object lifespan. The results also raise the question of whether low levels of post-treatment residual chloride produce corrosion of any significance. Answering this will be an important step forward for managing the preservation of archaeological iron.  相似文献   

4.

Three studies investigated whether 3‐ and 4‐year‐olds interpret television images as mere pictorial representations of objects or as real, physically‐present objects. Four‐year‐olds gave clear evidence of making the former interpretation whereas 3‐year‐olds seemed to make the latter one. However, the data suggest that the younger children's errors reflect a failure to differentiate conceptually between television images and their referent objects rather than a conviction that real objects populate television sets.  相似文献   

5.
6.

This study examined factors that were predicted to be related to the effect that attitude dissimilarity has on interpersonal attraction in the first few minutes of an initial interaction. In this study, 114 participants engaged in dyadic interactions with same‐sex partners that varied in attitude similarity. Prior to and after interacting with one another, participants rated their partner's personal character and whether they believed that a future interaction would be a positive one. These data revealed that the perceived quality of future interactions significantly improved over time and character attributions partially improved. The global predictions made in this study were framed and supported as an expectancy violation explanation.  相似文献   

7.
《文物保护研究》2013,58(2):74-78
Abstract

Collections of ethnographical leatherwork from West Africa contain many different utility objects. There is one group which is not strictly leather and is made from the stomach membrane of camels and parts of cow skin. These articles made by the Hausa people of Northern Nigeria are known as ‘Tandu’. Vessels are made by moulding the wet membrane around a shaped, air-dried clay mould. On drying, the clay is removed to leave a strong but light utility vessel or container. There are many reasons for the deterioration of the Tandu vessels; these include damage by mould or fungi due to unsuitable temperatures and relative humidities, ultraviolet light and strong illumination that produce fading and eventual breakdown of the protein, insect attack and air pollution. Remedies for these problems are suggested, together with the practical treatment in a laboratory. After treatment, careful storage is necessary.  相似文献   

8.
《图书馆管理杂志》2013,53(1-2):325-348
SUMMARY

Quality online maps and mapping resources, while indispensable to library users, can be challenging to locate. The range of available map types continues to expand and includes road maps, historical collections, political and physical atlases as well as maps and images of the moon and certain planets. Interactive mapping sites continue to grow and provide unique opportunities for users to interact with socioeconomic, historic, and physical data while creating unique and personalized maps. This article serves to highlight the best online resources for both map image collections and interactive mapping sites found on the Internet today.  相似文献   

9.
ABSTRACT

In 2017, the #MeToo movement swept across social media, making the pervasiveness of sexual assault visible to millions. People shared hashtags and stories often only told in intimate settings on a variety of platforms, exposing this issue to the multitudes. At its core, the #MeToo movement was a consciousness-raising effort, but it was occurring in a new mediascape that dramatically altered its spread, force, and impact. This paper examines #MeToo as it unfolded across wild public networks and, in doing so, resisted contemporary image practices, transformed the rhetor into what we term a rhizomatically networked collective, and expanded audiences.  相似文献   

10.
ABSTRACT

As e-resources become more ubiquitous, and the technologies available to access them more sophisticated, libraries have greater opportunities to reach out to global users. However, this same distance means that some users never even set foot in a physical library. This case study will describe how one large academic library started a business, economics, and marketing library online instruction pilot for global users in an effort to replicate library instruction offered at the home institution. Librarians assessed global library use and research needs; prepared unique lesson plans for each global site; and created digital learning objects using synchronous and asynchronous methods to establish an instruction strategy for Business and Economics courses. The goal was to test instruction practices and develop an online instruction template that would be replicable and sustainable for library instruction in other subject areas in New York University Libraries and other institutions.  相似文献   

11.
12.
《文物保护研究》2013,58(4):257-266
Abstract

A study of the accelerated light fading behavior of face-mounted color photographic materials has shown that alterations on the surface of the materials influence their fading characteristics. With the help of spectral density measurements it became apparent that the application of materials such as silicone rubber, adhesive film and acrylic sheeting, but also laminating films, onto the surface of the prints accelerated the degradation of the colorants, especially the yellow dye, in chromogenic materials. In the case of silver dye bleach materials, however, the opposite effect was observed. The influence of the material combination on the stability of face mounted color photographic prints was demonstrated to vary considerably. In order to better assess the inherent damage potential of the materials themselves, these were examined by means of instrumental analysis and measurements of pollutant gasses. Besides off-gassing compounds such as acetic acid and changes in pH caused by aging of the adhesive, face-mounting with a rigid plastic sheet (acrylic glazing) also affected the respective fading behavior of the various materials that were tested.  相似文献   

13.
Abstract

In February 2002, members of Saint Anselm College Geisel Library's Cataloging Unit started a project to retrospectively catalog the Library's small, but diverse, collection of cartographic materials. The Cataloging Unit of Geisel's Technical Services Department is comprised of two full-time catalogers plus one half-time cataloger. The Library's Government Documents Department (Geisel is a selective, 15% depository), where much of these materials are housed, does not have a dedicated cataloging staff. The collection of approximately 950 titles included topographic series maps, topographic/bathymetric maps (367), CIA country study maps (480), remote sensing image maps (20), hanging wall maps (6), globes (3), political ward maps (40), atlases (21), and monographic maps from the late 19th and early 20th centuries (10).

This article describes the planning, requirements and challenges faced by a Baccalaureate College Liberal Arts library performing an inhouse retrospective cataloging project of cartographic materials.  相似文献   

14.
Objective:This study compares two maps of biomedical sciences using Medical Subject Headings (MeSH) term co-assignments versus MeSH terms of citing/cited articles and reveals similarities and differences between the two approaches.Methods:MeSH terms assigned to 397,475 journal articles published in 2015, as well as their 4,632,992 cited references, were retrieved from Web of Science and MEDLINE databases, respectively, which formed over 7 million MeSH co-assignments and nearly 18 million direct citation pairs. We generated six network visualizations of biomedical science at three levels using Gephi software based on these MeSH co-assignments and citation pairs.Results:The MeSH co-assignment map contained more nodes and edges, as MeSH co-assignments cover all medical topics discussed in articles. By contrast, the MeSH citation map contained fewer but larger nodes and wider edges, as citation links indicate connections to two similar medical topics.Conclusion:These two types of maps emphasize different aspects of biomedical sciences, with MeSH co-assignment maps focusing on the relationship between topics in different categories and MeSH direct citation maps providing insights into relationships between topics in the same or similar category.  相似文献   

15.
Abstract

Users of geographic data may not be able to afford to purchase and implement a dataset that does not finally meet their needs. Therefore, metadata has a very important role in the information supply environment of geographic data. The development of national/local spatial data infrastructures recognizes the importance of metadata, as do the digital libraries providing spatial data.

The new ISO 19115:2003 standard of metadata for geographic information is introduced briefly. In particular, geographic information can be made available as digital maps (or images) that are meant for visual use, or as datasets meant for computational use. Metadata for digital maps is closely related to the metadata elements for conventional maps and can be enhanced by providing a sample map with the data. The case of computational use of geographic data is more complex. There are several details that may appear crucial when determining the fitness of data for an intended use. Understanding the importance of the crucial factors in each use case requires professional skills from the users of metadata.  相似文献   

16.
ABSTRACT

Information professionals strive to understand the needs of communities in order to discover ways to connect and engage them in library resources and services. Positive word-of-mouth communication remains one of the most powerful tools used to develop mutually rewarding connections with the community. This article argues that libraries can harness the power of brand advocacy to transform their patrons into the most enthusiastic sharers of information, or informal brand advocates. Moreover, it emphasizes how libraries can carefully build and maintain mutually rewarding community connections through effective brand advocacy by utilizing the STEPPS framework – Social Currency, Triggers, Emotion, Public, Practical Value, Stories. Each principle in this framework can help an organization to effectively spread important brand messages. While the social currency principle encourages people to talk about topics that make them appear more favorable to others, triggers provide everyday cues that remind people of the library brand. Emotion focuses on appealing to feelings and the public principle calls for initiatives that advertise the brand. Finally, practical value motivates people to spread useful information and the stories principle explains that people share their experiences through memorable narratives. The article calls for adopting a holistic approach toward brand advocacy in applying the STEPPS framework in libraries.  相似文献   

17.
ABSTRACT

This experimental program, implemented by the Managing Collection Environment Initiative at the Getty Conservation Institute, has provided data about the response of historic objects to changes in relative humidity (RH). Alongside other less sensitive documentation techniques (visual observation, physical measurements, photography, and 3D scanning), acoustic emission (AE) was monitored for six historic, museum-like wooden objects exposed to gradually increasing RH variations. Quantitative calibration of AE sensors and an anti-correlation measuring scheme to reduce environmental noise allowed the AE system to effectively trace micro-damage development caused by environmentally induced stress. Using an epidemiological approach, with respect to sample selection and experimental protocol, the obtained results can be used to explore the acceptable range of climate fluctuations for museum collections. The study’s well-controlled environmental protocol also allowed for the examination of the concept of ‘proofed fluctuation’ by the analysis of object response to reoccurring conditions.  相似文献   

18.
Background:Systematic reviews are comprehensive, robust, inclusive, transparent, and reproducible when bringing together the evidence to answer a research question. Various guidelines provide recommendations on the expertise required to conduct a systematic review, where and how to search for literature, and what should be reported in the published review. However, the finer details of the search results are not typically reported to allow the search methods or search efficiency to be evaluated.Case Presentation:This case study presents a search summary table, containing the details of which databases were searched, which supplementary search methods were used, and where the included articles were found. It was developed and published alongside a recent systematic review. This simple format can be used in future systematic reviews to improve search results reporting.Conclusions:Publishing a search summary table in all systematic reviews would add to the growing evidence base about information retrieval, which would help in determining which databases to search for which type of review (in terms of either topic or scope), what supplementary search methods are most effective, what type of literature is being included, and where it is found. It would also provide evidence for future searching and search methods research.  相似文献   

19.
Abstract

Digital facsimile maps of the Netherlands viewable over the Internet or available on CD-ROMs-as an example of what may be available for other countries-are the focus of this article. The author gives an overview of selected Web sites in The Netherlands that provide access to digitized maps and atlases, outlining strengths and weaknesses for each, and detailing future directions for these types of Web sites.  相似文献   

20.
《The Reference Librarian》2013,54(83-84):131-144
SUMMARY

In these times of extraordinary development in information and communication technologies (ICT) many new tools and services, and traditional tools, such as the catalog, could be developed or enhanced by librarians to effectively support the academic community in teaching and learning. This paper will discuss how social interaction between technical and public service librarians could enhance library services to the academic faculty and students during these demanding times of technologies and information overload. The paper will also point out that the team approach to library services can improve social interaction between librarians when the perpetuation of the traditional academic organizational model is not efficient enough for the faculty and students' need-driven use of information. Rapid changes resulting from ICT demand constant social interaction that would be facilitated by establishing working teams for specific tasks.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号