MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 03/02/02 through 03/08/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 25,196 681,871
BIO88 4,405 74,947
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,145 19,082
2-4 a.m. 511 8,315
4-6 a.m. 173 5,047
6-8 a.m. 277 7,995
8-10 a.m. 2,086 56,395
10-12 a.m. 4,552 129,833
12-2 p.m. 4,974 129,620
2-4 p.m. 5,895 142,333
4-6 p.m. 4,815 108,826
6-8 p.m. 2,209 60,663
8-10 p.m. 1,875 56,577
10-12 p.m. 1,089 32,132
__________ _____________ _________________
Total: 29,601 756,818
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 503
Davis 757
Irvine 19
Los Angeles 187
Riverside 136
San Diego 79
San Francisco 67
Santa Barbara 110
Santa Cruz 57
Lawrence Berkeley 27
Lawrence Livermore 0
Los Alamos 0
MELWEB 23,668
Searchlight 3,162
Other - UC 429
Other-Network UC 400
_____
29,601
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,544
Davis 29,825
Irvine 180
Los Angeles 3,174
Riverside 1,373
San Diego 797
San Francisco 725
Santa Barbara 1,009
Santa Cruz 651
Lawrence Berkeley 290
Lawrence Livermore 0
Los Alamos 0
MELWEB 691,596
Searchlight 16,180
Other - UC 1,230
Other-Network UC 5,244
_____
756,818
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.6
Standard deviation in seconds 6.1
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) 21:52
Average session length (minutes:seconds) 21:16
Longest session recorded (minutes:seconds) 243:09
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 933.6
Retrievals per search - standard deviation 10104
Percent of searches completed with 0 results 20.2%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 29,601 12.9%
PRESENT 188,446 82.0%
INIT or CLOSE 11,182 4.9%
OTHER 567 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 7,595 18.3% 1,435 18.9% 9 120.0 1153.3
TITLE WORD 4,824 11.6% 1,853 38.4% 4 368.1 5112.0
EXACT TITLE 276 0.7% 144 52.2% 1 47.4 471.9
KEYWORD 18,078 43.7% 2,799 15.5% 24 1252.5 11632.0
JOURNAL 1,663 4.0% 590 35.5% 6 2591.0 14032.0
EXACT JOURNAL 386 0.9% 160 41.4% 27 2368.7 7998.5
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 10 0.0% 4 40.0% 9 101.2 185.7
BIOSYS NAMES 29 0.1% 18 62.1% 22 133.8 193.6
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 104 0.3% 8 7.7% 18 95.3 244.0
MAJ CONCEPT CDES 9 0.0% 0 0.0% 69,850 72274.7 77199.8
CONCEPT CODES 17 0.0% 1 5.9% 127 4283.4 9043.7
PUBLICATION TYPE 130 0.3% 29 22.3% 13 430.7 2059.3
DATE 150 0.4% 25 16.7% 7 76.0 515.8
LANGUAGE 82 0.2% 20 24.4% 19 892.0 3317.5
ADDED 1,086 2.6% 879 80.9% 3 11.6 38.3
AUTHOR AFFIL. 172 0.4% 47 27.3% 17 228.2 1237.7
ACCESSION NO. 2 0.0% 2 100% 0 0.0 0.0
ISSN 3 0.0% 3 100% 0 0.0 0.0
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 15 0.0% 3 20.0% 172 412.6 477.2
AT 368 0.9% 72 19.6% 15 565.1 2560.0
Other indexes 6,409 15.5% 1,251 19.5% 26 1585.1 13167.3
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 8,760 29.6% 2,599 29.7% 9 707.0 7452.1
Single 20,841 70.4% 3,376 16.2% 21 1333.0 12368.2
PRESENT commands, by type:
MARC 52.6%
OPAC 30.0%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)