MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 06/15/02 through 06/21/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 11,203 373,675
BIO88 2,077 79,026
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 872 18,058
2-4 a.m. 118 5,137
4-6 a.m. 77 1,568
6-8 a.m. 261 6,023
8-10 a.m. 944 27,560
10-12 a.m. 2,413 86,792
12-2 p.m. 2,244 90,320
2-4 p.m. 2,721 79,212
4-6 p.m. 2,079 63,250
6-8 p.m. 724 33,269
8-10 p.m. 482 18,626
10-12 p.m. 345 22,886
__________ _____________ _________________
Total: 13,280 452,701
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 519
Davis 724
Irvine 23
Los Angeles 42
Riverside 96
San Diego 110
San Francisco 70
Santa Barbara 63
Santa Cruz 118
Lawrence Berkeley 4
Lawrence Livermore 0
Los Alamos 0
MELWEB 9,385
Searchlight 1,839
Other - UC 11
Other-Network UC 276
_____
13,280
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 73,351
Davis 13,128
Irvine 607
Los Angeles 1,064
Riverside 81,956
San Diego 694
San Francisco 758
Santa Barbara 1,294
Santa Cruz 596
Lawrence Berkeley 31
Lawrence Livermore 0
Los Alamos 0
MELWEB 258,700
Searchlight 16,460
Other - UC 75
Other-Network UC 3,987
_____
452,701
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.8
Standard deviation in seconds 6.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:31
Average session length (minutes:seconds) 20:28
Longest session recorded (minutes:seconds) 299:45
Average number of searches completed per session 0.0
Retrievals per search - median 6.0
Retrievals per search - average 496.6
Retrievals per search - standard deviation 5725.1
Percent of searches completed with 0 results 22.0%
Percent of searches entered that are long 0.1%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 13,280 5.3%
PRESENT 229,273 92.4%
INIT or CLOSE 5,237 2.1%
OTHER 441 0.2%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 4,740 26.7% 835 17.6% 7 165.2 3408.4
TITLE WORD 2,364 13.3% 817 34.6% 3 210.5 1105.6
EXACT TITLE 118 0.7% 65 55.1% 1 142.4 922.6
KEYWORD 6,997 39.5% 1,373 19.6% 22 925.8 8536.6
JOURNAL 715 4.0% 239 33.4% 4 852.0 3035.5
EXACT JOURNAL 174 1.0% 70 40.2% 133 1639.6 4215.3
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 5 0.0% 3 60.0% 94 94.0 58.0
BIOSYS NAMES 11 0.1% 4 36.4% 423 509.0 567.8
BIOSYS CODES 3 0.0% 0 0.0% 9 12.3 5.8
SUPERTAXA 37 0.2% 11 29.7% 32 271.0 459.9
MAJ CONCEPT CDES 1 0.0% 0 0.0% 37,343 37343.0 0.0
CONCEPT CODES 2 0.0% 1 50.0% 6 6.0 0.0
PUBLICATION TYPE 22 0.1% 6 27.3% 11 110.5 304.2
DATE 86 0.5% 26 30.2% 4 76.5 175.2
LANGUAGE 8 0.0% 1 12.5% 283 954.9 1586.0
ADDED 807 4.6% 572 70.9% 3 8.1 14.2
AUTHOR AFFIL. 113 0.6% 15 13.3% 18 106.6 322.8
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 5 0.0% 0 0.0% 118 429.4 772.4
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AT 61 0.3% 14 22.9% 8 76.2 137.9
Other indexes 1,461 8.2% 285 19.5% 12 464.7 4040.9
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 3,785 28.5% 1,223 32.3% 5 285.5 4432.1
Single 9,495 71.5% 1,693 17.8% 20 751.5 7012.3
PRESENT commands, by type:
MARC 84.4%
OPAC 9.3%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)