Micrographs on the Internet -- the first 18 months

Anja O. Saura

October 1999


First user response query
Electron micrograph maps of Drosophila melanogaster polytene chromosomes were published as a single entity on the Internet in December 1997 (ref. 1). The directory ~saura/EM/ is made up of some 300 files: a main jpg file and an html file for (about) each polytene chromosome division, and additional image files for almost all divisions. In February 1998 "The Drosophila Virtual Library" (ref. 2) and in October 1998 "FlyBase" (ref. 3) set up a link to our micrographs. Here we present certain statistics of file requests. Monthly web server request logs for single files of the directory ~saura/EM/ (ref. 4) were summed up during 18 months (February 1998-July 1999).

Table 1 gives the number of requests per month for the index page and micrograph files for each chromosome arm. According to the web server request logs the total number of requests for the files of the directory ~saura/EM/ was 51 324. The index page (EM/index.html) was requested 4 854 times, and image files (all html and jpg files) 46 470 times. The most requested set of micrographs was division 1.

Table 1.

Month index X files 2L files 2R files 3L files 3R files 4, *chr **other total
98-02 94 352 109 57 14 15 9 9 659
98-03132414871288186155948
98-0417656218714417619031101476
98-0519262928918916815918111655
98-061165443052492001993281653
98-0715174342631541735740172466
98-0817875939520941925932162267
98-0928594246528030228758202639
98-10347131144428229623759232999
98-11399160558724522122558163356
98-12307139757125027611550182984
99-01336155261836540632369253694
99-02370171361544048725870233976
99-03437163095372974146580275062
99-04363161192566453041583344625
99-05339172063349649750395164299
99-06389140561448174447357214184
99-0724399442425526914736142382
Total4854198838647577862444713892313 51324

(*chr = chromocenter.html; **other = ep100-60.jpg, ep25-100.jpg, ep36-24.jpg, changes1998.html)

The volume of traffic on the site has been evidently due to Drosophila Virtual Library and FlyBase setting up links to our image repository. The effect of well-placed links is widely recognized (ref. 5).

We are aware of the unreliability of server logs and access counters in assessing the popularity of a site (ref. 6). In order to further determine how well our site serves its audience, we are planning to collect feedback from site users.

References

Ref. 1. http://www.helsinki.fi/~saura/EM/
Ref. 2. http://www.ceolas.org/fly/
Ref. 3. http://flybase.bio.indiana.edu
Ref. 4. http://www.helsinki.fi/cgi-bin/etsi-tilasto?~saura
Ref. 5. http://ep.com/faq/webannounce.html
Ref. 6. http://www.cranfield.ac.uk/docs/stats/


Copyright © by Anja Saura, Department of Biosciences, Division of Genetics, University of Helsinki, Finland
anja.saura@helsinki.fi
URL:http://www.helsinki.fi/~saura/EM/requests.html
URN:NBN:fi-fe20021397
Content last modified: 1999-10-09
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