MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 09/08/01 through 09/14/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 10,220 251,539
BIO88 1,608 29,898
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 556 4,228
2-4 a.m. 354 2,605
4-6 a.m. 89 1,913
6-8 a.m. 287 8,387
8-10 a.m. 648 17,485
10-12 a.m. 2,034 53,641
12-2 p.m. 1,878 48,996
2-4 p.m. 2,197 57,028
4-6 p.m. 1,921 50,238
6-8 p.m. 848 15,684
8-10 p.m. 755 14,121
10-12 p.m. 261 7,111
__________ _____________ _________________
Total: 11,828 281,437
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 226
Davis 532
Irvine 15
Los Angeles 27
Riverside 50
San Diego 202
San Francisco 3
Santa Barbara 80
Santa Cruz 28
Lawrence Berkeley 25
Lawrence Livermore 1
Los Alamos 0
MELWEB 0
Searchlight 552
Other - UC 9,689
Other-Network UC 398
_____
11,828
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,109
Davis 13,477
Irvine 340
Los Angeles 484
Riverside 1,085
San Diego 804
San Francisco 19
Santa Barbara 318
Santa Cruz 400
Lawrence Berkeley 257
Lawrence Livermore 28
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 258,109
Other-Network UC 4,007
_____
281,437
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.9
Standard deviation in seconds 7.3
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) 21:25
Average session length (minutes:seconds) 19:24
Longest session recorded (minutes:seconds) 154:32
Average number of searches completed per session 0.0
Retrievals per search - median 5.0
Retrievals per search - average 451.3
Retrievals per search - standard deviation 4766.6
Percent of searches completed with 0 results 26.7%
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 11,828 14.0%
PRESENT 67,946 80.4%
INIT or CLOSE 4,526 5.4%
OTHER 237 0.3%
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 4,217 24.6% 813 19.3% 10 115.4 1407.8
TITLE WORD 2,157 12.6% 1,181 54.8% 3 337.7 3591.2
EXACT TITLE 90 0.5% 54 60.0% 1 155.3 864.0
KEYWORD 5,968 34.9% 1,237 20.7% 20 788.2 6289.9
JOURNAL 667 3.9% 228 34.2% 6 1434.4 9973.8
EXACT JOURNAL 171 1.0% 56 32.7% 21 1459.2 3791.3
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 20 0.1% 12 60.0% 1,092 1423.9 1754.2
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 28 0.2% 3 10.7% 119 390.3 589.8
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 9 0.1% 2 22.2% 168 313.4 362.5
PUBLICATION TYPE 20 0.1% 6 30.0% 10 39.1 101.6
DATE 105 0.6% 22 20.9% 3 29.5 84.9
LANGUAGE 3 0.0% 0 0.0% 1 2.3 2.3
ADDED 1,463 8.5% 1,219 83.3% 3 9.0 19.4
AUTHOR AFFIL. 76 0.4% 24 31.6% 14 23.2 30.2
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.0% 2 100% 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 72 0.4% 14 19.4% 13 368.2 1233.9
Other indexes 2,051 12.0% 452 22.0% 15 416.4 3895.6
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 4,367 36.9% 1,813 41.5% 7 218.3 1900.3
Single 7,461 63.1% 1,341 18.0% 21 781.2 6494.0
PRESENT commands, by type:
MARC 54.6%
OPAC 26.6%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)