MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 05/12/01 through 05/18/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 19,018 500,315
BIO88 3,557 51,393
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,027 13,644
2-4 a.m. 348 4,233
4-6 a.m. 175 3,028
6-8 a.m. 382 9,263
8-10 a.m. 1,457 37,024
10-12 a.m. 3,343 83,526
12-2 p.m. 3,931 99,513
2-4 p.m. 3,905 95,141
4-6 p.m. 3,529 87,698
6-8 p.m. 1,906 55,549
8-10 p.m. 1,562 38,566
10-12 p.m. 1,010 24,523
__________ _____________ _________________
Total: 22,575 551,708
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 510
Davis 510
Irvine 28
Los Angeles 346
Riverside 34
San Diego 98
San Francisco 28
Santa Barbara 220
Santa Cruz 33
Lawrence Berkeley 20
Lawrence Livermore 2
Los Alamos 0
MELWEB 17,258
Searchlight 3,049
Other - UC 27
Other-Network UC 412
_____
22,575
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 5,788
Davis 9,341
Irvine 381
Los Angeles 3,310
Riverside 595
San Diego 660
San Francisco 676
Santa Barbara 4,315
Santa Cruz 858
Lawrence Berkeley 507
Lawrence Livermore 9
Los Alamos 0
MELWEB 506,560
Searchlight 11,148
Other - UC 2,171
Other-Network UC 5,389
_____
551,708
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 6.3
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) 21:28
Average session length (minutes:seconds) 20:34
Longest session recorded (minutes:seconds) 282:10
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 988.1
Retrievals per search - standard deviation 10932
Percent of searches completed with 0 results 21.3%
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 22,575 13.4%
PRESENT 135,458 80.5%
INIT or CLOSE 8,943 5.3%
OTHER 1,302 0.8%
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 6,006 18.9% 1,102 18.3% 9 92.6 718.1
TITLE WORD 3,498 11.0% 1,248 35.7% 3 176.1 1215.5
EXACT TITLE 221 0.7% 130 58.8% 1 159.4 1369.0
KEYWORD 13,861 43.5% 2,582 18.6% 24 1434.0 13472.6
JOURNAL 1,246 3.9% 475 38.1% 6 3433.1 18991.9
EXACT JOURNAL 297 0.9% 128 43.1% 59 1691.2 4986.9
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 5 0.0% 4 80.0% 25 25.0 0.0
BIOSYS NAMES 15 0.0% 8 53.3% 7 104.1 210.9
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 38 0.1% 4 10.5% 17 385.7 1494.0
MAJ CONCEPT CDES 1 0.0% 0 0.0% 16,137 16137.0 0.0
CONCEPT CODES 6 0.0% 0 0.0% 1,041 1005.5 1020.8
PUBLICATION TYPE 46 0.1% 6 13.0% 30 530.7 1447.6
DATE 206 0.6% 34 16.5% 4 37.6 111.0
LANGUAGE 71 0.2% 15 21.1% 24 197.0 485.5
ADDED 908 2.9% 715 78.7% 4 16.5 55.5
AUTHOR AFFIL. 68 0.2% 17 25.0% 10 633.8 2340.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 3 0.0% 2 66.7% 1,242 1242.0 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 7 0.0% 0 0.0% 9 1638.6 4166.8
AT 332 1.0% 77 23.2% 18 640.9 3395.2
Other indexes 5,010 15.7% 1,021 20.4% 24 1747.8 12525.7
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 6,676 29.6% 2,025 30.3% 9 874.7 7708.8
Single 15,899 70.4% 2,783 17.5% 21 1390.5 13568.5
PRESENT commands, by type:
MARC 52.6%
OPAC 32.6%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)