MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 09/15/01 through 09/21/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 11,588 255,886
BIO88 1,738 23,931
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 786 5,703
2-4 a.m. 277 1,332
4-6 a.m. 123 484
6-8 a.m. 355 7,253
8-10 a.m. 1,083 26,193
10-12 a.m. 2,269 55,254
12-2 p.m. 2,190 47,211
2-4 p.m. 2,529 55,553
4-6 p.m. 1,739 42,429
6-8 p.m. 828 17,879
8-10 p.m. 515 14,641
10-12 p.m. 632 5,885
__________ _____________ _________________
Total: 13,326 279,817
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 574
Irvine 30
Los Angeles 35
Riverside 159
San Diego 186
San Francisco 6
Santa Barbara 158
Santa Cruz 72
Lawrence Berkeley 16
Lawrence Livermore 1
Los Alamos 0
MELWEB 0
Searchlight 578
Other - UC 10,911
Other-Network UC 341
_____
13,326
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,711
Davis 7,879
Irvine 113
Los Angeles 1,187
Riverside 3,444
San Diego 1,177
San Francisco 197
Santa Barbara 2,170
Santa Cruz 292
Lawrence Berkeley 243
Lawrence Livermore 9
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 252,527
Other-Network UC 5,868
_____
279,817
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.0
Standard deviation in seconds 7.7
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:29
Average session length (minutes:seconds) 19:53
Longest session recorded (minutes:seconds) 206:37
Average number of searches completed per session 0.0
Retrievals per search - median 5.0
Retrievals per search - average 951.5
Retrievals per search - standard deviation 20923
Percent of searches completed with 0 results 27.4%
Percent of searches entered that are long 0.2%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 13,326 14.1%
PRESENT 75,743 80.4%
INIT or CLOSE 5,106 5.4%
OTHER 63 0.1%
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 4,684 24.9% 882 18.8% 9 128.9 3189.2
TITLE WORD 2,716 14.4% 1,608 59.2% 3 269.0 2698.2
EXACT TITLE 156 0.8% 80 51.3% 1 9.7 69.2
KEYWORD 6,557 34.9% 1,281 19.5% 21 1134.8 11811.4
JOURNAL 590 3.1% 238 40.3% 6 14652.9 118461
EXACT JOURNAL 174 0.9% 83 47.7% 345 4726.9 10263.2
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 2 0.0% 2 100% 0 0.0 0.0
BIOSYS NAMES 9 0.0% 8 88.9% 12 12.0 0.0
BIOSYS CODES 2 0.0% 1 50.0% 4 4.0 0.0
SUPERTAXA 18 0.1% 1 5.6% 13 233.2 518.7
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 161017 161017 0.0
PUBLICATION TYPE 29 0.2% 2 6.9% 19 337.0 574.8
DATE 103 0.5% 17 16.5% 3 66.6 317.7
LANGUAGE 11 0.1% 2 18.2% 6 268.1 556.2
ADDED 1,712 9.1% 1,514 88.4% 3 7.6 12.0
AUTHOR AFFIL. 125 0.7% 46 36.8% 6 72.7 314.7
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 3 0.0% 1 33.3% 8 7.5 2.1
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 4 0.0% 0 0.0% 1,176 1010.5 780.7
AT 97 0.5% 25 25.8% 21 3137.6 16652.4
Other indexes 1,803 9.6% 364 20.2% 17 809.8 8959.8
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 4,731 35.5% 2,223 47.0% 6 472.9 6874.4
Single 8,595 64.5% 1,427 16.6% 20 1603.5 28221.0
PRESENT commands, by type:
MARC 59.7%
OPAC 23.1%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)