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Kristine M. Alpi James C. Brown Jr. Jennifer A. Neel Carol B. Grindem Keith E. Linder James B. Harper 《Journal of the Medical Library Association》2016,104(1):15-23
Objective
Clinical and research usefulness of articles can depend on image quality. This study addressed whether scans of figures in black and white (B&W), grayscale, or color, or portable document format (PDF) to tagged image file format (TIFF) conversions as provided by interlibrary loan or document delivery were viewed as acceptable or useful by radiologists or pathologists.Methods
Residency coordinators selected eighteen figures from studies from radiology, clinical pathology, and anatomic pathology journals. With original PDF controls, each figure was prepared in three or four experimental conditions: PDF conversion to TIFF, and scans from print in B&W, grayscale, and color. Twelve independent observers indicated whether they could identify the features and whether the image quality was acceptable. They also ranked all the experimental conditions of each figure in terms of usefulness.Results
Of 982 assessments of 87 anatomic pathology, 83 clinical pathology, and 77 radiology images, 471 (48%) were unidentifiable. Unidentifiability of originals (4%) and conversions (10%) was low. For scans, unidentifiability ranged from 53% for color, to 74% for grayscale, to 97% for B&W. Of 987 responses about acceptability (n=405), 41% were said to be unacceptable, 97% of B&W, 66% of grayscale, 41% of color, and 1% of conversions. Hypothesized order (original, conversion, color, grayscale, B&W) matched 67% of rankings (n=215).Conclusions
PDF to TIFF conversion provided acceptable content. Color images are rarely useful in grayscale (12%) or B&W (less than 1%). Acceptability of grayscale scans of noncolor originals was 52%. Digital originals are needed for most images. Print images in color or grayscale should be scanned using those modalities. 相似文献39.
Aaron Harper 《体育哲学杂志》2016,43(2):295-309
Recent articles, including those by Dixon and Torres and Hager, criticize tournament playoffs, primarily for reasons of fairness and integrity. Many suggest that playoff and tournament prominence reflect monetary and entertainment interests rather than the pursuit of athletic excellence. Nevertheless, tournament playoffs are increasingly popular. While the concerns are serious, in this paper I defend the overlooked value of playoffs and tournaments. Playoff critics employ too narrow a conception of the best team and too limited a view of excellence. Rather, playoffs and seasons highlight distinct and valuable conceptions of athletic excellence. To better capture this, I consider two alternative championship formats: the hybrid system and championship pluralism. The hybrid system includes a playoff informed by the regular season. Despite its apparent advantages, I reject the hybrid approach. Instead, I propose championship pluralism as a preferred championship model. 相似文献
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Dr. Patricia Harper Apt 《Innovative Higher Education》1978,3(1):31-33
How do adults learn about higher education opportunities that are available to them? Few studies have investigated this question. The Institute for Communication Research study of the promotion of adult learning programs in the United States and the Center for Research and Development in Higher Education study of higher education opportunities for adults focused on the channels chosen by educational institutions for communicating information. This study investigates adult audiences' attentiveness and evaluation of various sources of information about opportunities for higher education. Generally, it was found that personal sources of information were evaluated more highly by adults interested in pursuing higher education than by those who were not interested. The evaluation of mass media information sources were not significantly different, however, between interested adults and not-interested adults. 相似文献