MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 05/11/02 through 05/17/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 22,394 598,313
BIO88 4,274 59,955
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,066 19,983
2-4 a.m. 277 6,037
4-6 a.m. 97 2,379
6-8 a.m. 367 6,186
8-10 a.m. 1,451 36,437
10-12 a.m. 3,592 90,389
12-2 p.m. 4,528 124,649
2-4 p.m. 5,619 133,028
4-6 p.m. 4,111 101,145
6-8 p.m. 2,630 66,291
8-10 p.m. 1,764 41,653
10-12 p.m. 1,166 30,091
__________ _____________ _________________
Total: 26,668 658,268
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 259
Davis 475
Irvine 119
Los Angeles 72
Riverside 178
San Diego 161
San Francisco 6
Santa Barbara 114
Santa Cruz 41
Lawrence Berkeley 2
Lawrence Livermore 2
Los Alamos 0
MELWEB 21,007
Searchlight 3,889
Other - UC 131
Other-Network UC 212
_____
26,668
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,596
Davis 14,843
Irvine 1,420
Los Angeles 1,281
Riverside 4,625
San Diego 1,157
San Francisco 153
Santa Barbara 945
Santa Cruz 648
Lawrence Berkeley 12
Lawrence Livermore 28
Los Alamos 0
MELWEB 605,800
Searchlight 11,882
Other - UC 1,031
Other-Network UC 11,847
_____
658,268
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.7
Standard deviation in seconds 6.8
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:22
Average session length (minutes:seconds) 19:33
Longest session recorded (minutes:seconds) 172:38
Average number of searches completed per session 0.0
Retrievals per search - median 6.0
Retrievals per search - average 1054.5
Retrievals per search - standard deviation 16506
Percent of searches completed with 0 results 22.5%
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 26,668 13.2%
PRESENT 163,668 80.8%
INIT or CLOSE 11,050 5.5%
OTHER 1,266 0.6%
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 6,769 18.6% 1,308 19.3% 8 173.2 2947.4
TITLE WORD 3,658 10.1% 1,062 29.0% 3 403.5 9948.6
EXACT TITLE 246 0.7% 148 60.2% 1 25.0 104.6
KEYWORD 17,406 48.0% 3,756 21.6% 21 1733.0 22255.1
JOURNAL 1,411 3.9% 556 39.4% 5 2083.3 13525.9
EXACT JOURNAL 248 0.7% 123 49.6% 27 3022.3 9800.9
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 6 0.0% 1 16.7% 5,416 3254.8 2968.5
BIOSYS NAMES 20 0.1% 13 65.0% 4 8.4 13.7
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 82 0.2% 13 15.9% 27 364.9 992.0
MAJ CONCEPT CDES 2 0.0% 1 50.0% 106863 106863 0.0
CONCEPT CODES 2 0.0% 0 0.0% 537 536.5 615.9
PUBLICATION TYPE 60 0.2% 9 15.0% 28 275.2 1011.0
DATE 118 0.3% 26 22.0% 6 63.9 169.3
LANGUAGE 69 0.2% 10 14.5% 34 189.4 520.3
ADDED 596 1.6% 401 67.3% 3 9.1 21.6
AUTHOR AFFIL. 141 0.4% 49 34.8% 19 62.3 231.1
ACCESSION NO. 3 0.0% 3 100% 0 0.0 0.0
ISSN 12 0.0% 10 83.3% 310 309.5 434.9
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 7 0.0% 2 28.6% 78 689.6 894.6
AT 305 0.8% 62 20.3% 20 264.9 860.9
Other indexes 5,134 14.1% 833 16.2% 19 886.7 6882.0
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 7,245 27.2% 1,838 25.4% 8 560.1 5907.4
Single 19,423 72.8% 4,169 21.5% 20 1645.1 21519.5
PRESENT commands, by type:
MARC 53.0%
OPAC 30.9%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)