Document (#3649)

Author

Hattery, M.

Title

Videotex in the US in 1991

Source

Information retrieval and library automation. 27(1991) no.4, S.1-4

Year

1991

Abstract

Videotex systems have failed to penetrate significantly into the US market. Services such as home shopping, airline schedules and sports scores do not provide the necessary 'single critical service'. Electronic mail, messaging and community bulletin boards generate the most usage. Lack of open platforms and competition has led to poor services and hardware presents a barrier to everyman use. Describes services provided by US videotex companies Compuserve, Prodigy, American Online, Delphi and GEnie as well as smaller local commercial and non-commercial services. Videotex can be valuable for the physically handicapped, senior citizens, and health services

Theme

Informationsdienstleistungen

Object

Videotex
Btx
Compuserve

Location

USA

Similar documents (content)

1. Housel, T.J.; Davidson, W.H.: ¬The development of information services in France : the case of public videotex (1991) 0.22

   0.22078997 = sum of:
     0.22078997 = product of:
       1.8399165 = sum of:
         0.10941405 = weight(abstract_txt:failed in 4925) [ClassicSimilarity], result of:
           0.10941405 = score(doc=4925,freq=1.0), product of:
             0.11796311 = queryWeight, product of:
               1.1163211 = boost
               7.4202213 = idf(docFreq=71, maxDocs=44218)
               0.014240991 = queryNorm
             0.92752767 = fieldWeight in 4925, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.4202213 = idf(docFreq=71, maxDocs=44218)
               0.125 = fieldNorm(doc=4925)
         0.09894869 = weight(abstract_txt:services in 4925) [ClassicSimilarity], result of:
           0.09894869 = score(doc=4925,freq=1.0), product of:
             0.18863727 = queryWeight, product of:
               3.1565654 = boost
               4.1963577 = idf(docFreq=1808, maxDocs=44218)
               0.014240991 = queryNorm
             0.5245447 = fieldWeight in 4925, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1963577 = idf(docFreq=1808, maxDocs=44218)
               0.125 = fieldNorm(doc=4925)
         1.6315538 = weight(title_txt:videotex in 4925) [ClassicSimilarity], result of:
           1.6315538 = score(doc=4925,freq=1.0), product of:
             0.71465826 = queryWeight, product of:
               5.4953485 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.014240991 = queryNorm
             2.2829845 = fieldWeight in 4925, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.25 = fieldNorm(doc=4925)
       0.12 = coord(3/25)
   

2. Lanoue, M.: ¬The French videotex system, Minitel : its uses and applications in libraries (1994) 0.21

   0.21471725 = sum of:
     0.21471725 = product of:
       1.7893105 = sum of:
         0.05064154 = weight(abstract_txt:home in 5336) [ClassicSimilarity], result of:
           0.05064154 = score(doc=5336,freq=1.0), product of:
             0.096556626 = queryWeight, product of:
               1.0099667 = boost
               6.7132807 = idf(docFreq=145, maxDocs=44218)
               0.014240991 = queryNorm
             0.52447504 = fieldWeight in 5336, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.7132807 = idf(docFreq=145, maxDocs=44218)
               0.078125 = fieldNorm(doc=5336)
         0.10711509 = weight(abstract_txt:services in 5336) [ClassicSimilarity], result of:
           0.10711509 = score(doc=5336,freq=3.0), product of:
             0.18863727 = queryWeight, product of:
               3.1565654 = boost
               4.1963577 = idf(docFreq=1808, maxDocs=44218)
               0.014240991 = queryNorm
             0.5678363 = fieldWeight in 5336, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.1963577 = idf(docFreq=1808, maxDocs=44218)
               0.078125 = fieldNorm(doc=5336)
         1.6315538 = weight(title_txt:videotex in 5336) [ClassicSimilarity], result of:
           1.6315538 = score(doc=5336,freq=1.0), product of:
             0.71465826 = queryWeight, product of:
               5.4953485 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.014240991 = queryNorm
             2.2829845 = fieldWeight in 5336, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.25 = fieldNorm(doc=5336)
       0.12 = coord(3/25)
   

3. Case, D.O.: ¬The social shaping of videotex : how information services for the public have evolved (1994) 0.14

   0.13752103 = sum of:
     0.13752103 = product of:
       1.7190129 = sum of:
         0.0874591 = weight(abstract_txt:services in 7704) [ClassicSimilarity], result of:
           0.0874591 = score(doc=7704,freq=2.0), product of:
             0.18863727 = queryWeight, product of:
               3.1565654 = boost
               4.1963577 = idf(docFreq=1808, maxDocs=44218)
               0.014240991 = queryNorm
             0.4636364 = fieldWeight in 7704, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.1963577 = idf(docFreq=1808, maxDocs=44218)
               0.078125 = fieldNorm(doc=7704)
         1.6315538 = weight(title_txt:videotex in 7704) [ClassicSimilarity], result of:
           1.6315538 = score(doc=7704,freq=1.0), product of:
             0.71465826 = queryWeight, product of:
               5.4953485 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.014240991 = queryNorm
             2.2829845 = fieldWeight in 7704, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.25 = fieldNorm(doc=7704)
       0.08 = coord(2/25)
   

4. Black, G.: Videotex at the crossroads (1993) 0.13

   0.1305243 = sum of:
     0.1305243 = product of:
       3.2631075 = sum of:
         3.2631075 = weight(title_txt:videotex in 5) [ClassicSimilarity], result of:
           3.2631075 = score(doc=5,freq=1.0), product of:
             0.71465826 = queryWeight, product of:
               5.4953485 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.014240991 = queryNorm
             4.565969 = fieldWeight in 5, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.5 = fieldNorm(doc=5)
       0.04 = coord(1/25)
   

5. Veith, R.H.: Videotex and teletext (1983) 0.13

   0.1305243 = sum of:
     0.1305243 = product of:
       3.2631075 = sum of:
         3.2631075 = weight(title_txt:videotex in 291) [ClassicSimilarity], result of:
           3.2631075 = score(doc=291,freq=1.0), product of:
             0.71465826 = queryWeight, product of:
               5.4953485 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.014240991 = queryNorm
             4.565969 = fieldWeight in 291, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.5 = fieldNorm(doc=291)
       0.04 = coord(1/25)