MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 05/18/02 through 05/24/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 19,830 497,930
BIO88 3,776 50,388
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 851 13,157
2-4 a.m. 404 3,640
4-6 a.m. 75 1,881
6-8 a.m. 338 6,530
8-10 a.m. 1,502 37,462
10-12 a.m. 3,730 87,315
12-2 p.m. 4,469 109,712
2-4 p.m. 4,388 110,841
4-6 p.m. 3,675 84,350
6-8 p.m. 1,827 41,004
8-10 p.m. 1,367 30,396
10-12 p.m. 980 22,030
__________ _____________ _________________
Total: 23,606 548,318
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 543
Davis 505
Irvine 33
Los Angeles 173
Riverside 121
San Diego 134
San Francisco 15
Santa Barbara 163
Santa Cruz 248
Lawrence Berkeley 0
Lawrence Livermore 2
Los Alamos 0
MELWEB 17,574
Searchlight 3,915
Other - UC 81
Other-Network UC 99
_____
23,606
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 11,125
Davis 7,398
Irvine 182
Los Angeles 2,052
Riverside 2,810
San Diego 4,854
San Francisco 521
Santa Barbara 1,410
Santa Cruz 4,082
Lawrence Berkeley 0
Lawrence Livermore 88
Los Alamos 0
MELWEB 500,251
Searchlight 9,167
Other - UC 1,798
Other-Network UC 2,580
_____
548,318
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 6.7
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:05
Average session length (minutes:seconds) 18:19
Longest session recorded (minutes:seconds) 170:27
Average number of searches completed per session 0.0
Retrievals per search - median 6.0
Retrievals per search - average 978.0
Retrievals per search - standard deviation 15853
Percent of searches completed with 0 results 23.9%
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 23,606 14.1%
PRESENT 133,122 79.3%
INIT or CLOSE 10,161 6.1%
OTHER 1,046 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 6,420 20.0% 1,112 17.3% 9 151.7 1508.9
TITLE WORD 3,326 10.4% 1,286 38.7% 4 450.8 9079.1
EXACT TITLE 200 0.6% 101 50.5% 1 10.4 44.5
KEYWORD 14,693 45.8% 3,407 23.2% 21 1577.6 21895.8
JOURNAL 1,307 4.1% 435 33.3% 5 1817.7 10354.0
EXACT JOURNAL 229 0.7% 89 38.9% 205 2237.2 5166.8
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 2 0.0% 1 50.0% 44 44.0 0.0
BIOSYS NAMES 14 0.0% 11 78.6% 50 54.0 48.1
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 62 0.2% 8 12.9% 26 442.8 1501.7
MAJ CONCEPT CDES 6 0.0% 0 0.0% 14,448 50124.2 73109.7
CONCEPT CODES 2 0.0% 2 100% 0 0.0 0.0
PUBLICATION TYPE 41 0.1% 9 21.9% 10 644.2 2710.7
DATE 105 0.3% 24 22.9% 5 31.2 97.3
LANGUAGE 45 0.1% 11 24.4% 12 1267.1 4657.4
ADDED 842 2.6% 657 78.0% 3 182.0 2274.5
AUTHOR AFFIL. 87 0.3% 23 26.4% 14 97.6 374.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 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 0 0.0% 0 0.0% 0 0.0 0.0
AT 266 0.8% 57 21.4% 12 424.9 1871.3
Other indexes 4,414 13.8% 813 18.4% 25 1543.2 12268.6
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 6,629 28.1% 1,916 28.9% 9 815.7 8549.2
Single 16,977 71.9% 3,736 22.0% 19 1453.3 20528.1
PRESENT commands, by type:
MARC 53.6%
OPAC 31.7%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)