MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 08/18/01 through 08/24/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 10,821 274,931
BIO88 1,889 32,325
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 470 6,513
2-4 a.m. 605 6,872
4-6 a.m. 87 1,173
6-8 a.m. 582 13,120
8-10 a.m. 1,055 30,730
10-12 a.m. 1,952 48,811
12-2 p.m. 2,001 47,487
2-4 p.m. 2,545 56,318
4-6 p.m. 1,779 54,332
6-8 p.m. 951 25,207
8-10 p.m. 418 10,308
10-12 p.m. 265 6,385
__________ _____________ _________________
Total: 12,710 307,256
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 146
Davis 403
Irvine 3
Los Angeles 158
Riverside 38
San Diego 120
San Francisco 7
Santa Barbara 25
Santa Cruz 13
Lawrence Berkeley 4
Lawrence Livermore 0
Los Alamos 0
MELWEB 18
Searchlight 666
Other - UC 10,789
Other-Network UC 320
_____
12,710
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,774
Davis 7,634
Irvine 6
Los Angeles 1,053
Riverside 1,534
San Diego 1,049
San Francisco 636
Santa Barbara 208
Santa Cruz 359
Lawrence Berkeley 209
Lawrence Livermore 0
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 281,267
Other-Network UC 10,527
_____
307,256
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 7.8
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:16
Average session length (minutes:seconds) 19:28
Longest session recorded (minutes:seconds) 235:21
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 500.7
Retrievals per search - standard deviation 5468.1
Percent of searches completed with 0 results 27.4%
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 12,710 13.3%
PRESENT 77,569 81.4%
INIT or CLOSE 4,682 4.9%
OTHER 278 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 4,381 24.2% 689 15.7% 9 83.7 783.1
TITLE WORD 2,760 15.2% 1,587 57.5% 2 318.6 4575.4
EXACT TITLE 81 0.4% 46 56.8% 1 152.0 565.4
KEYWORD 6,134 33.9% 1,216 19.8% 18 737.2 5014.5
JOURNAL 761 4.2% 272 35.7% 6 1420.6 8941.7
EXACT JOURNAL 181 1.0% 66 36.5% 165 919.0 1745.4
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 1 0.0% 0 0.0% 33 33.0 0.0
BIOSYS NAMES 13 0.1% 13 100% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 14 0.1% 0 0.0% 40 62.5 112.5
MAJ CONCEPT CDES 3 0.0% 0 0.0% 35,467 42446.3 17511.2
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 8 0.0% 0 0.0% 5 86.6 185.9
DATE 88 0.5% 9 10.2% 5 465.5 3709.9
LANGUAGE 21 0.1% 6 28.6% 62 415.7 611.4
ADDED 1,805 10.0% 1,528 84.7% 5 14.1 27.4
AUTHOR AFFIL. 109 0.6% 30 27.5% 12 44.1 139.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 3 0.0% 0 0.0% 12 148.3 236.1
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 0 0.0% 0 0.0% 0 0.0 0.0
AT 75 0.4% 22 29.3% 20 183.5 570.1
Other indexes 1,663 9.2% 353 21.2% 14 1191.4 11999.7
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 4,608 36.3% 2,103 45.6% 5 148.7 1368.4
Single 8,102 63.7% 1,375 17.0% 20 890.6 7447.9
PRESENT commands, by type:
MARC 54.2%
OPAC 29.1%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)