MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 11/25/00 through 12/01/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 16,168 435,784
BIO88 3,931 61,243
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 553 11,601
2-4 a.m. 162 2,781
4-6 a.m. 92 1,826
6-8 a.m. 309 6,319
8-10 a.m. 1,354 29,838
10-12 a.m. 3,369 93,412
12-2 p.m. 3,224 81,763
2-4 p.m. 3,831 91,514
4-6 p.m. 3,019 72,686
6-8 p.m. 1,907 49,240
8-10 p.m. 1,467 35,841
10-12 p.m. 812 20,206
__________ _____________ _________________
Total: 20,099 497,027
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 272
Davis 377
Irvine 6
Los Angeles 205
Riverside 96
San Diego 46
San Francisco 31
Santa Barbara 73
Santa Cruz 39
Lawrence Berkeley 6
Lawrence Livermore 3
Los Alamos 0
MELWEB 15,910
Searchlight 2,593
Other - UC 88
Other-Network UC 354
_____
20,099
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,788
Davis 6,545
Irvine 14
Los Angeles 3,411
Riverside 1,184
San Diego 432
San Francisco 362
Santa Barbara 576
Santa Cruz 906
Lawrence Berkeley 115
Lawrence Livermore 151
Los Alamos 0
MELWEB 471,677
Searchlight 3,920
Other - UC 1,543
Other-Network UC 2,403
_____
497,027
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 5.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.7
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:30
Average session length (minutes:seconds) 20:19
Longest session recorded (minutes:seconds) 292:57
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 877.3
Retrievals per search - standard deviation 10555
Percent of searches completed with 0 results 19.8%
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 20,099 14.2%
PRESENT 113,253 79.8%
INIT or CLOSE 8,275 5.8%
OTHER 309 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 5,898 20.8% 1,001 17.0% 9 87.3 645.3
TITLE WORD 2,380 8.4% 624 26.2% 3 391.4 3170.5
EXACT TITLE 207 0.7% 111 53.6% 1 84.1 590.9
KEYWORD 12,406 43.8% 2,345 18.9% 20 1192.7 12429.3
JOURNAL 1,388 4.9% 526 37.9% 6 2987.0 18202.7
EXACT JOURNAL 310 1.1% 129 41.6% 23 872.5 2086.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 2 0.0% 2 100% 0 0.0 0.0
BIOSYS NAMES 21 0.1% 15 71.4% 494 489.8 386.7
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 57 0.2% 16 28.1% 33 118.6 274.0
MAJ CONCEPT CDES 5 0.0% 0 0.0% 69,850 50678.0 27099.0
CONCEPT CODES 7 0.0% 1 14.3% 176 2687.5 6227.5
PUBLICATION TYPE 28 0.1% 8 28.6% 5 118.3 272.4
DATE 158 0.6% 20 12.7% 2 29.6 88.5
LANGUAGE 46 0.2% 15 32.6% 33 217.5 379.9
ADDED 431 1.5% 278 64.5% 3 13.5 61.2
AUTHOR AFFIL. 99 0.3% 45 45.5% 9 265.2 1646.4
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 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 1 0.0% 1 100% 0 0.0 0.0
AT 490 1.7% 113 23.1% 22 766.8 4524.2
Other indexes 4,413 15.6% 868 19.7% 17 1299.6 13241.0
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 6,148 30.6% 1,535 25.0% 8 690.5 7731.7
Single 13,951 69.4% 2,435 17.5% 19 1254.6 13042.2
PRESENT commands, by type:
MARC 50.6%
OPAC 31.5%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)