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41.
42.
This paper addresses the role that scientific status plays in initial public offerings of technology focused firms. The paper builds on the literature of the sociology of science as well as the work of Spence (1974) and Podolny (1993) and argues that the presence of a Nobel laureate affiliated with a firm making an IPO provides a signal of firm quality to potential investors. Moreover, and building on the work of Podolny and Scott Morton (1999) and Stuart et al. (1999) we hypothesize that the importance of status diminishes as other measures of firm quality become available. We test our hypothesis for two periods of initial public offerings in biotechnology. We document that there is a clear difference in “maturity” of the firms across the two windows on a number of metrics. Consistent with our hypothesis that Nobel laureates play an important role as a non-financial signal of firm quality, we find that first-window firms with a Nobel laureate affiliate realize greater IPO proceeds in the amount of $24 million. In the second window the amount of money raised is not significantly different between Nobel and non-Nobel firms. This finding is consistent with the signaling literature that argues that the importance of a signal is inversely related to the availability of cogent information on firm quality. Consistent with this view, we also find a change between the two windows in the importance of other non-financial metrics used to convey value. Our research is one of the first to examine the dynamic nature of signals. Because we are unable to distinguish the extent to which the reduction in uncertainty at the firm level is correlated with the reduction of uncertainty at the industry level, the question remains as to the extent to which the diminished importance of signals in our second period is due to a change in market uncertainty versus a change in firm uncertainty. 相似文献
43.
Gurpreet K Rana Doreen R Bradley Stanley J Hamstra Paula T Ross Robert E Schumacher John G Frohna Hilary M Haftel Monica L Lypson 《Journal of the Medical Library Association》2011,99(1):77-81
Objective:
The objective of this study was to validate an assessment instrument for MEDLINE search strategies at an academic medical center.Method:
Two approaches were used to investigate if the search assessment tool could capture performance differences in search strategy construction. First, data from an evaluation of MEDLINE searches from a pediatric resident''s longitudinal assessment were investigated. Second, a cross-section of search strategies from residents in one incoming class was compared with strategies of residents graduating a year later. MEDLINE search strategies formulated by faculty who had been identified as having search expertise were used as a gold standard comparison. Participants were presented with a clinical scenario and asked to identify the search question and conduct a MEDLINE search. Two librarians rated the blinded search strategies.Results:
Search strategy scores were significantly higher for residents who received training than the comparison group with no training. There was no significant difference in search strategy scores between senior residents who received training and faculty experts.Conclusion:
The results provide evidence for the validity of the instrument to evaluate MEDLINE search strategies. This assessment tool can measure improvements in information-seeking skills and provide data to fulfill Accreditation Council for Graduate Medical Education competencies.Highlights
- The University of Michigan MEDLINE Search Assessment tool can be used to assess search skills in residency education.
- Five elements were identified as critical elements in the development of an effective MEDLINE search strategy: inclusion of all search concepts, appropriate use of Medical Subject Headings, appropriate use of search limits, successful combination of all concepts, and search efficiency.
Implications
- This validated assessment tool can serve as an effective means to measure improvements in residents'' information-seeking skills and provide data to fulfill Accreditation Council for Graduate Medical Education competencies.
44.
Barrett Jentry S. Schachter Rachel E. Gilbert Danni Fuerst Mathew 《Early Childhood Education Journal》2022,50(3):385-397
Early Childhood Education Journal - Active engagement in music has numerous academic and social benefits for young children and music-making is included in many early childhood standards and... 相似文献
45.
Gi-Zen Liu Wan-Yu Chiu Chih-Chung Lin Neil E. Barrett 《Journal of Science Education and Technology》2014,23(6):827-839
To date, the concept of English for Specific Purposes has brought about a great impact on English language learning across various disciplines, including those in science education. Hence, this review paper aimed to address current English language learning in the science disciplines through the practice of computer-assisted language learning to identify the use of learning technologies in science-based literacy. In the literature review, the researchers found that science-based literacy instruction shares many pedagogical aims with English language teaching in terms of reading, writing, listening and speaking, allowing it to be classified as English for Scientific Purposes (EScP). To answer the research questions, the researchers conducted the survey by extracting related articles and teaching examples from the Web of Science. In the search procedure, the researchers used the keywords science OR scientific AND technolog* OR comput* in ten selected journals of social science citation index. Only articles which are specified as journal articles rather than other document types were included. After compiling the corpora, the researchers compared the trends, methodologies and results of EScP instruction in science education. The implications of this study include the opportunities, advantages and challenges for EScP instruction in science education to further develop better educational approaches, adopt new technologies, as well as offer some directions for researchers to conduct future studies. 相似文献
46.
Cindy Kovalik Chia-Ling Kuo Megan Cummins Erin Dipzinski Paula Joseph Stephanie Laskey 《TechTrends》2014,58(5):90-94
In this paper, four teachers shared their experiences using the following free Web 2.0 tools with their students: Jing, Wix, Google Sites, and Blogger. The teachers found that students reacted positively to lessons in which these tools were used, and also noted improvements they could make when using them in the future. 相似文献
47.
Bryan Alexander described the digital environment that we live in, giving an extensive overview of the current state of interactive devices, particularly mobile devices, which are moving us beyond the personal computer. He covered recent major developments that have transformed the world in surprising ways in a rather short period of time. The world of apps is further expanding what these devices can do, also bringing with them more challenges to individual privacy. Gaming and augmented reality are becoming deeply embedded in much of what we do. Alexander laid out four possible futures that these contemporary developments could lead to. 相似文献
48.
Margaret Barrett 《International Journal of Early Years Education》2003,11(3):195-212
This paper examines the ways in which young children construct and negotiate musical meaning as song-makers in a post-modern consumerist musical world. A critical analysis of the presentation of music in two popular Australian children's television programmes (Play School and Hi-5) and the ways in which such media impact upon children's constructions of music and musical understanding is presented. This analysis provides a context for the examination of tensions that exist between a modernist account of what constitutes musical understanding in the young child, and an account that is cognisant of post-modern aesthetics. The implications of this concerning views of children's musical development and curriculum decision making are discussed and a view of the child as an active agent in the construction of her musical worlds is illustrated through an examination of the musical narratives of a 4-year-old child. 相似文献
49.
50.
Doctoral students experience many challenges on the long journey towards completion. Common problems include: synthesising data, working at a conceptual level, clarifying the relationship of the parts of the thesis to the whole, finding a voice and completing a viva successfully. Few authors have addressed the use of visualisations to meet these challenges. This paper focuses on the use of visualisations in doctoral writing. It presents narratives about seven ways that visualisations can help students to make breakthroughs in their writing, namely, as an organiser of the relationships of the parts of the thesis to the whole, a trigger for peer discourse, a vehicle for conceptual work, a metaphor to express key concepts, a trigger for professional development, a visual aid for the viva and as a prompt for freedrawing and freewriting. 相似文献