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This paper describes a procedure for automated test forms assembly based on Classical Test Theory (CTT). The procedure uses stratified random content sampling and test form pre-equating to ensure both content and psychometric equivalence in generating virtually unlimited parallel forms. The procedure extends the usefulness of CTT in automated test form construction, yielding classical item statistics based on representative sample distributions and pre-equated test forms with known psychometric characteristics. A rationale for the procedure is presented followed by an example application and discussion of psychometric considerations related to its use. 相似文献
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Sally Morris 《Learned Publishing》2003,16(3):171-176
There is increasing pressure from academia to make the results of publicly funded research freely available to all. Preprint archives have grown up in some disciplines, and institutional archives are now being developed. While openly accessible preprints seem to have damaged publishers less than was originally feared, the final published versions of articles – when combined with sophisticated retrieval software – may turn out to be a different matter. Publishers have already done much to make their content more accessible through bundling, consortia licensing, access for less‐developed countries, more liberal customer and author agreements, and collective licensing. Some are experimenting with open access journals, although this may not work in all disciplines. It seems clear, however, that there are elements of value in journals themselves, and in the functions performed by journal publishers, which should survive. 相似文献
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Intermediation and the role of intermediaries in innovation 总被引:5,自引:0,他引:5
Jeremy Howells 《Research Policy》2006,35(5):715-728
This paper investigates the issue of intermediation and the role of intermediaries in the innovation process. The aim of this paper is three-fold. Firstly, to review and synthesis the literature in this field; from this to develop a typology and framework of the different roles and functions of the intermediation process within innovation; lastly to try and operationalise the typology within the context of UK using case study material. 相似文献
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