Document (#29800)

Author

Byerley, S.L.
Chambers, M.B.

Title

Accessibility and usability of Web-based library databases for non-visual users

Source

Library hi tech. 20(2002) no.2, S.169-178

Year

2002

Abstract

The ADA mandates that library programs and services be accessible to people with disabilities. With the advent of the WWW, the popularity of commercial Web-based resources in academic libraries has soared, but are these resources accessible to people with visual disabilities? This study examines the accessibility of two popular Web-based abstracting and indexing services, Periodical Abstracts, offered by OCLC FirstSearch, and Gale Group's Expanded Academic ASAP, when accessed by blind users using screen-reading programs. The study measured accessibility based on guidelines from the amended Section 508 of the Rehabilitation Act of 1973 and on the Web Content Accessibility Guidelines issued by the WWW Consortium. The findings indicate that, while each database has a high degree of accessibility, there is a need for Web developers to conduct usability testing of commercial databases with people who rely on screen readers for access to the Web. Librarians must be cognizant of accessibility issues and demand assurance from database vendors that their products are accessible.

Content

Part of a Special Issue: Accessibility of web-based information resources for people with disabilities. Vgl. auch unter: http://www.emeraldinsight.com/10.1108/07378830210432534.

Similar documents (author)

1. Riding, R.; Chambers, P.: CD-ROM versus textbook : a comparison of the use of two learning media by higher education studuents (1994) 4.58

   4.583889 = sum of:
     4.583889 = weight(author_txt:chambers in 1788) [ClassicSimilarity], result of:
       4.583889 = fieldWeight in 1788, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.167778 = idf(docFreq=11, maxDocs=42306)
         0.5 = fieldNorm(doc=1788)
   

2. Bradley, P.; Chambers, L.: Growth and use of the Internet (1995) 4.58

   4.583889 = sum of:
     4.583889 = weight(author_txt:chambers in 2226) [ClassicSimilarity], result of:
       4.583889 = fieldWeight in 2226, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.167778 = idf(docFreq=11, maxDocs=42306)
         0.5 = fieldNorm(doc=2226)
   

3. Myall, C.; Chambers, S.: Copy cataloging for print and video monographs in two academic libraries : a case study of editing required for accuracy and completeness (2007) 4.58

   4.583889 = sum of:
     4.583889 = weight(author_txt:chambers in 1392) [ClassicSimilarity], result of:
       4.583889 = fieldWeight in 1392, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.167778 = idf(docFreq=11, maxDocs=42306)
         0.5 = fieldNorm(doc=1392)
   

4. Shiri, A.; Chambers, T.: Information retrieval from digital libraries : assessing the potential utility of thesauri in supporting users' search behaviour in an interdisciplinary domain (2008) 4.58

   4.583889 = sum of:
     4.583889 = weight(author_txt:chambers in 83) [ClassicSimilarity], result of:
       4.583889 = fieldWeight in 83, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.167778 = idf(docFreq=11, maxDocs=42306)
         0.5 = fieldNorm(doc=83)
   

5. Chambers, S.; Myall, C.: Cataloging and classification : review of the literature 2007-8 (2010) 4.58

   4.583889 = sum of:
     4.583889 = weight(author_txt:chambers in 1310) [ClassicSimilarity], result of:
       4.583889 = fieldWeight in 1310, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.167778 = idf(docFreq=11, maxDocs=42306)
         0.5 = fieldNorm(doc=1310)
   

Similar documents (content)

1. Yu, H.: Web accessibility and the law : recommendations for implementation (2002) 0.44

   0.4424061 = sum of:
     0.4424061 = product of:
       1.5800217 = sum of:
         0.0135373715 = weight(abstract_txt:with in 786) [ClassicSimilarity], result of:
           0.0135373715 = score(doc=786,freq=1.0), product of:
             0.057151467 = queryWeight, product of:
               1.248112 = boost
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.018123336 = queryNorm
             0.23686832 = fieldWeight in 786, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.09375 = fieldNorm(doc=786)
         0.08012645 = weight(abstract_txt:guidelines in 786) [ClassicSimilarity], result of:
           0.08012645 = score(doc=786,freq=1.0), product of:
             0.1484266 = queryWeight, product of:
               1.4222656 = boost
               5.758281 = idf(docFreq=362, maxDocs=42306)
               0.018123336 = queryNorm
             0.53983885 = fieldWeight in 786, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.758281 = idf(docFreq=362, maxDocs=42306)
               0.09375 = fieldNorm(doc=786)
         0.027896177 = weight(abstract_txt:based in 786) [ClassicSimilarity], result of:
           0.027896177 = score(doc=786,freq=1.0), product of:
             0.09254812 = queryWeight, product of:
               1.5882674 = boost
               3.2151837 = idf(docFreq=4616, maxDocs=42306)
               0.018123336 = queryNorm
             0.3014235 = fieldWeight in 786, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.2151837 = idf(docFreq=4616, maxDocs=42306)
               0.09375 = fieldNorm(doc=786)
         0.077895045 = weight(abstract_txt:people in 786) [ClassicSimilarity], result of:
           0.077895045 = score(doc=786,freq=1.0), product of:
             0.1667368 = queryWeight, product of:
               1.8462317 = boost
               4.9831862 = idf(docFreq=787, maxDocs=42306)
               0.018123336 = queryNorm
             0.4671737 = fieldWeight in 786, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9831862 = idf(docFreq=787, maxDocs=42306)
               0.09375 = fieldNorm(doc=786)
         0.2633713 = weight(abstract_txt:disabilities in 786) [ClassicSimilarity], result of:
           0.2633713 = score(doc=786,freq=1.0), product of:
             0.3281256 = queryWeight, product of:
               2.1146812 = boost
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.018123336 = queryNorm
             0.8026539 = fieldWeight in 786, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.09375 = fieldNorm(doc=786)
         0.1230345 = weight(abstract_txt:accessible in 786) [ClassicSimilarity], result of:
           0.1230345 = score(doc=786,freq=1.0), product of:
             0.22613937 = queryWeight, product of:
               2.1500995 = boost
               5.8033595 = idf(docFreq=346, maxDocs=42306)
               0.018123336 = queryNorm
             0.54406494 = fieldWeight in 786, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8033595 = idf(docFreq=346, maxDocs=42306)
               0.09375 = fieldNorm(doc=786)
         0.99416095 = weight(abstract_txt:accessibility in 786) [ClassicSimilarity], result of:
           0.99416095 = score(doc=786,freq=7.0), product of:
             0.5997543 = queryWeight, product of:
               4.9519033 = boost
               6.682871 = idf(docFreq=143, maxDocs=42306)
               0.018123336 = queryNorm
             1.6576138 = fieldWeight in 786, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               6.682871 = idf(docFreq=143, maxDocs=42306)
               0.09375 = fieldNorm(doc=786)
       0.28 = coord(7/25)
   

2. Burgstahler, S.: Distance learning : the library's role in ensuring access to everyone (2002) 0.32

   0.31713355 = sum of:
     0.31713355 = product of:
       0.9910423 = sum of:
         0.044758506 = weight(abstract_txt:resources in 788) [ClassicSimilarity], result of:
           0.044758506 = score(doc=788,freq=2.0), product of:
             0.079903945 = queryWeight, product of:
               1.0435396 = boost
               4.2249455 = idf(docFreq=1681, maxDocs=42306)
               0.018123336 = queryNorm
             0.5601539 = fieldWeight in 788, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.2249455 = idf(docFreq=1681, maxDocs=42306)
               0.09375 = fieldNorm(doc=788)
         0.062846094 = weight(abstract_txt:academic in 788) [ClassicSimilarity], result of:
           0.062846094 = score(doc=788,freq=2.0), product of:
             0.10019284 = queryWeight, product of:
               1.1685389 = boost
               4.731026 = idf(docFreq=1013, maxDocs=42306)
               0.018123336 = queryNorm
             0.6272514 = fieldWeight in 788, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.731026 = idf(docFreq=1013, maxDocs=42306)
               0.09375 = fieldNorm(doc=788)
         0.023447415 = weight(abstract_txt:with in 788) [ClassicSimilarity], result of:
           0.023447415 = score(doc=788,freq=3.0), product of:
             0.057151467 = queryWeight, product of:
               1.248112 = boost
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.018123336 = queryNorm
             0.41026795 = fieldWeight in 788, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.09375 = fieldNorm(doc=788)
         0.08012645 = weight(abstract_txt:guidelines in 788) [ClassicSimilarity], result of:
           0.08012645 = score(doc=788,freq=1.0), product of:
             0.1484266 = queryWeight, product of:
               1.4222656 = boost
               5.758281 = idf(docFreq=362, maxDocs=42306)
               0.018123336 = queryNorm
             0.53983885 = fieldWeight in 788, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.758281 = idf(docFreq=362, maxDocs=42306)
               0.09375 = fieldNorm(doc=788)
         0.09049666 = weight(abstract_txt:programs in 788) [ClassicSimilarity], result of:
           0.09049666 = score(doc=788,freq=1.0), product of:
             0.1609717 = queryWeight, product of:
               1.4811519 = boost
               5.996692 = idf(docFreq=285, maxDocs=42306)
               0.018123336 = queryNorm
             0.5621899 = fieldWeight in 788, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.996692 = idf(docFreq=285, maxDocs=42306)
               0.09375 = fieldNorm(doc=788)
         0.11016023 = weight(abstract_txt:people in 788) [ClassicSimilarity], result of:
           0.11016023 = score(doc=788,freq=2.0), product of:
             0.1667368 = queryWeight, product of:
               1.8462317 = boost
               4.9831862 = idf(docFreq=787, maxDocs=42306)
               0.018123336 = queryNorm
             0.6606834 = fieldWeight in 788, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.9831862 = idf(docFreq=787, maxDocs=42306)
               0.09375 = fieldNorm(doc=788)
         0.45617247 = weight(abstract_txt:disabilities in 788) [ClassicSimilarity], result of:
           0.45617247 = score(doc=788,freq=3.0), product of:
             0.3281256 = queryWeight, product of:
               2.1146812 = boost
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.018123336 = queryNorm
             1.3902373 = fieldWeight in 788, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.09375 = fieldNorm(doc=788)
         0.1230345 = weight(abstract_txt:accessible in 788) [ClassicSimilarity], result of:
           0.1230345 = score(doc=788,freq=1.0), product of:
             0.22613937 = queryWeight, product of:
               2.1500995 = boost
               5.8033595 = idf(docFreq=346, maxDocs=42306)
               0.018123336 = queryNorm
             0.54406494 = fieldWeight in 788, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8033595 = idf(docFreq=346, maxDocs=42306)
               0.09375 = fieldNorm(doc=788)
       0.32 = coord(8/25)
   

3. Axtell, R.; Dixon, J.M.: Voyager 2000 : a review of accessibility for persons with visual disabilities (2002) 0.29

   0.2941957 = sum of:
     0.2941957 = product of:
       1.2258155 = sum of:
         0.022562286 = weight(abstract_txt:with in 797) [ClassicSimilarity], result of:
           0.022562286 = score(doc=797,freq=4.0), product of:
             0.057151467 = queryWeight, product of:
               1.248112 = boost
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.018123336 = queryNorm
             0.39478052 = fieldWeight in 797, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.078125 = fieldNorm(doc=797)
         0.10861149 = weight(abstract_txt:visual in 797) [ClassicSimilarity], result of:
           0.10861149 = score(doc=797,freq=3.0), product of:
             0.1423395 = queryWeight, product of:
               1.3927962 = boost
               5.638969 = idf(docFreq=408, maxDocs=42306)
               0.018123336 = queryNorm
             0.7630453 = fieldWeight in 797, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.638969 = idf(docFreq=408, maxDocs=42306)
               0.078125 = fieldNorm(doc=797)
         0.06677204 = weight(abstract_txt:guidelines in 797) [ClassicSimilarity], result of:
           0.06677204 = score(doc=797,freq=1.0), product of:
             0.1484266 = queryWeight, product of:
               1.4222656 = boost
               5.758281 = idf(docFreq=362, maxDocs=42306)
               0.018123336 = queryNorm
             0.44986573 = fieldWeight in 797, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.758281 = idf(docFreq=362, maxDocs=42306)
               0.078125 = fieldNorm(doc=797)
         0.10536669 = weight(abstract_txt:screen in 797) [ClassicSimilarity], result of:
           0.10536669 = score(doc=797,freq=1.0), product of:
             0.20117971 = queryWeight, product of:
               1.6558346 = boost
               6.703924 = idf(docFreq=140, maxDocs=42306)
               0.018123336 = queryNorm
             0.5237441 = fieldWeight in 797, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.703924 = idf(docFreq=140, maxDocs=42306)
               0.078125 = fieldNorm(doc=797)
         0.3801437 = weight(abstract_txt:disabilities in 797) [ClassicSimilarity], result of:
           0.3801437 = score(doc=797,freq=3.0), product of:
             0.3281256 = queryWeight, product of:
               2.1146812 = boost
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.018123336 = queryNorm
             1.1585311 = fieldWeight in 797, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.078125 = fieldNorm(doc=797)
         0.5423593 = weight(abstract_txt:accessibility in 797) [ClassicSimilarity], result of:
           0.5423593 = score(doc=797,freq=3.0), product of:
             0.5997543 = queryWeight, product of:
               4.9519033 = boost
               6.682871 = idf(docFreq=143, maxDocs=42306)
               0.018123336 = queryNorm
             0.9043025 = fieldWeight in 797, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.682871 = idf(docFreq=143, maxDocs=42306)
               0.078125 = fieldNorm(doc=797)
       0.24 = coord(6/25)
   

4. Johnson, A.M.; Ruppert, S.: ¬An evaluation of accessibility in online learning management systems (2002) 0.25

   0.25493684 = sum of:
     0.25493684 = product of:
       1.2746842 = sum of:
         0.023447415 = weight(abstract_txt:with in 787) [ClassicSimilarity], result of:
           0.023447415 = score(doc=787,freq=3.0), product of:
             0.057151467 = queryWeight, product of:
               1.248112 = boost
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.018123336 = queryNorm
             0.41026795 = fieldWeight in 787, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.09375 = fieldNorm(doc=787)
         0.11331591 = weight(abstract_txt:guidelines in 787) [ClassicSimilarity], result of:
           0.11331591 = score(doc=787,freq=2.0), product of:
             0.1484266 = queryWeight, product of:
               1.4222656 = boost
               5.758281 = idf(docFreq=362, maxDocs=42306)
               0.018123336 = queryNorm
             0.7634474 = fieldWeight in 787, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.758281 = idf(docFreq=362, maxDocs=42306)
               0.09375 = fieldNorm(doc=787)
         0.2633713 = weight(abstract_txt:disabilities in 787) [ClassicSimilarity], result of:
           0.2633713 = score(doc=787,freq=1.0), product of:
             0.3281256 = queryWeight, product of:
               2.1146812 = boost
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.018123336 = queryNorm
             0.8026539 = fieldWeight in 787, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.09375 = fieldNorm(doc=787)
         0.1230345 = weight(abstract_txt:accessible in 787) [ClassicSimilarity], result of:
           0.1230345 = score(doc=787,freq=1.0), product of:
             0.22613937 = queryWeight, product of:
               2.1500995 = boost
               5.8033595 = idf(docFreq=346, maxDocs=42306)
               0.018123336 = queryNorm
             0.54406494 = fieldWeight in 787, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8033595 = idf(docFreq=346, maxDocs=42306)
               0.09375 = fieldNorm(doc=787)
         0.7515151 = weight(abstract_txt:accessibility in 787) [ClassicSimilarity], result of:
           0.7515151 = score(doc=787,freq=4.0), product of:
             0.5997543 = queryWeight, product of:
               4.9519033 = boost
               6.682871 = idf(docFreq=143, maxDocs=42306)
               0.018123336 = queryNorm
             1.2530383 = fieldWeight in 787, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.682871 = idf(docFreq=143, maxDocs=42306)
               0.09375 = fieldNorm(doc=787)
       0.2 = coord(5/25)
   

5. Noble, S.: Web access and the law : a public policy framework (2002) 0.24

   0.24216732 = sum of:
     0.24216732 = product of:
       0.8648833 = sum of:
         0.03090599 = weight(abstract_txt:services in 785) [ClassicSimilarity], result of:
           0.03090599 = score(doc=785,freq=1.0), product of:
             0.07864834 = queryWeight, product of:
               1.0353081 = boost
               4.191619 = idf(docFreq=1738, maxDocs=42306)
               0.018123336 = queryNorm
             0.39296427 = fieldWeight in 785, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.191619 = idf(docFreq=1738, maxDocs=42306)
               0.09375 = fieldNorm(doc=785)
         0.044758506 = weight(abstract_txt:resources in 785) [ClassicSimilarity], result of:
           0.044758506 = score(doc=785,freq=2.0), product of:
             0.079903945 = queryWeight, product of:
               1.0435396 = boost
               4.2249455 = idf(docFreq=1681, maxDocs=42306)
               0.018123336 = queryNorm
             0.5601539 = fieldWeight in 785, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.2249455 = idf(docFreq=1681, maxDocs=42306)
               0.09375 = fieldNorm(doc=785)
         0.27139822 = weight(abstract_txt:rehabilitation in 785) [ClassicSimilarity], result of:
           0.27139822 = score(doc=785,freq=2.0), product of:
             0.21088506 = queryWeight, product of:
               1.1987615 = boost
               9.706774 = idf(docFreq=6, maxDocs=42306)
               0.018123336 = queryNorm
             1.2869486 = fieldWeight in 785, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.706774 = idf(docFreq=6, maxDocs=42306)
               0.09375 = fieldNorm(doc=785)
         0.019144734 = weight(abstract_txt:with in 785) [ClassicSimilarity], result of:
           0.019144734 = score(doc=785,freq=2.0), product of:
             0.057151467 = queryWeight, product of:
               1.248112 = boost
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.018123336 = queryNorm
             0.3349824 = fieldWeight in 785, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.5265954 = idf(docFreq=9191, maxDocs=42306)
               0.09375 = fieldNorm(doc=785)
         0.048317593 = weight(abstract_txt:based in 785) [ClassicSimilarity], result of:
           0.048317593 = score(doc=785,freq=3.0), product of:
             0.09254812 = queryWeight, product of:
               1.5882674 = boost
               3.2151837 = idf(docFreq=4616, maxDocs=42306)
               0.018123336 = queryNorm
             0.5220808 = fieldWeight in 785, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.2151837 = idf(docFreq=4616, maxDocs=42306)
               0.09375 = fieldNorm(doc=785)
         0.077895045 = weight(abstract_txt:people in 785) [ClassicSimilarity], result of:
           0.077895045 = score(doc=785,freq=1.0), product of:
             0.1667368 = queryWeight, product of:
               1.8462317 = boost
               4.9831862 = idf(docFreq=787, maxDocs=42306)
               0.018123336 = queryNorm
             0.4671737 = fieldWeight in 785, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9831862 = idf(docFreq=787, maxDocs=42306)
               0.09375 = fieldNorm(doc=785)
         0.37246323 = weight(abstract_txt:disabilities in 785) [ClassicSimilarity], result of:
           0.37246323 = score(doc=785,freq=2.0), product of:
             0.3281256 = queryWeight, product of:
               2.1146812 = boost
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.018123336 = queryNorm
             1.135124 = fieldWeight in 785, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.561642 = idf(docFreq=21, maxDocs=42306)
               0.09375 = fieldNorm(doc=785)
       0.28 = coord(7/25)