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Black-dyed artefacts are found in museums worldwide, many produced using an iron-tannate compound. Deterioration of iron-tannate dyed artefacts is an international preservation issue: in New Zealand the deterioration of paru (iron-tannate) dyed Māori textiles is widespread. This article reports experimental work testing the efficacy of sodium alginate, a consolidant developed for deteriorated paru-dyed muka (fibre from harakeke; Phormium tenax). The colour stability, strength retention, and acidity of paru-dyed muka consolidated with sodium alginate (0.25, 0.5, and 1% w/v in water) was tested pre- and post-artificial light ageing. This study found that sodium alginate had no negative effect on paru-dyed muka and in some cases provided benefit. Interestingly, the colour of paru-dyed muka is substantially more stable in UV-filtered light than previously recognised. Also microfading results were in agreement with visual assessments of colour change at 1 Mlux hour exposure, providing confidence in this relatively new technique to assess colour change. 相似文献
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Research on librarians' roles and responsibilities often takes the form of content analysis of job advertisements found in aggregators such as print journals and websites. Whether these ads help us better understand librarianship depends on how representative the source data is for each study—the line going from jobs, to job ads, then to job ad sources. Print sources dominate even in studies published after 2000. This study examines where reasonably representative job advertisements for academic libraries may be found by starting at the origin: the institutions themselves. It finds that commonly used print sources provide only a small fraction of available positions (the majority of which are those in doctoral institutions), and even the most comprehensive aggregator misses nearly half of the available positions. Taking job ad samples directly from institutions is time-consuming but provides more representative data. Smaller colleges pose a particular challenge for finding ads as few of them have openings at any one time and few of their ads appear in national aggregators. 相似文献
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David NICHOLAS Anthony WATKINSON Hamid R. JAMALI Eti HERMAN Carol TENOPIR Rachel VOLENTINE Suzie ALLARD Kenneth LEVINE 《Learned Publishing》2015,28(1):15-21
The article presents one of the main findings of an international study of 4,000 academic researchers that examined how trustworthiness is determined in the digital environment when it comes to scholarly reading, citing, and publishing. The study shows that peer review is still the most trustworthy characteristic of all. There is, though, a common perception that open access journals are not peer reviewed or do not have proper peer‐review systems. Researchers appear to have moved inexorably from a print‐based system to a digital system, but it has not significantly changed the way they decide what to trust. They do not trust social media. Only a minority – although significantly mostly young and early career researchers – thought that social media are anything other than more appropriate to personal interactions and peripheral to their professional/academic lives. There are other significant differences, according to the age of the researcher. Thus, in regard to choosing an outlet for publication of their work, young researchers are much less concerned with the fact that it is peer reviewed. 相似文献
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Rachel E. Scott 《The Reference Librarian》2017,58(1):1-18
There remains significant confusion surrounding the purpose, audience, and proposed application of the Framework for Information Literacy for Higher Education. This exploratory study addresses the question of whether undergraduate students can understand the language and concepts in this document. By presenting student responses to pretest questions recorded at the beginning of a semester-long research methods course, this article shows that students can, even on first impression, begin to make sense of the complexity and richness found in the Framework for Information Literacy for Higher Education. 相似文献
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The “learning disability” label is a relatively new addition to the field of special education and its effects have begun to be investigated. This study examined the differences produced by two categorical labels on students impressions of the “disturbingness” of behavior and their willingness to work with the labeled child. Aggressive behaviors thought to be exhibited by learning disabled youngsters were rated differently from identical behaviors thought to be exhibited by emotionally disturbed children. Implications of this study suggest that the “LD” label may connote a milder form of disability; and that teacher and professional training institutions should consider the deleterious effects labels may convey with regard to expected behaviors. 相似文献
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Teachers and pupils in 28 integrated junior high schools in Israel were interviewed and observed to determine the kinds of social and emotional problems encountered in integrated schools. Though these schools are mandated to achieve both academic and social goals, academic aspects of schooling are inordinately stressed while the social goal is neglected. This strategy has major implications for teaching methods, curriculum, tracking, extra-curricular activities and staff morale. Furthermore, while bright, achieving disadvantaged pupils tend to gain socially and emotionally from this strategy, most disadvantaged children sustain significant losses in the social and emotional spheres and meaningful ethnic integration in the school is not achieved. It is recommended that the school invest greater resources in enhancing pupils' social and emotional development and that there be a dual emphasis in integrated schools on academic and personal development. Implementation of this recommendation requires retraining teachers to provide them with concrete skills in both areas that can be applied in the heterogeneous class. 相似文献