MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 02/10/01 through 02/16/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 18,592 540,909
BIO88 3,678 61,813
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 518 9,716
2-4 a.m. 275 4,271
4-6 a.m. 108 1,779
6-8 a.m. 315 14,414
8-10 a.m. 1,402 33,862
10-12 a.m. 3,367 94,292
12-2 p.m. 3,717 102,307
2-4 p.m. 4,381 112,897
4-6 p.m. 3,831 100,705
6-8 p.m. 1,948 52,173
8-10 p.m. 1,624 40,594
10-12 p.m. 784 35,712
__________ _____________ _________________
Total: 22,270 602,722
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 379
Davis 486
Irvine 58
Los Angeles 151
Riverside 203
San Diego 55
San Francisco 7
Santa Barbara 62
Santa Cruz 70
Lawrence Berkeley 8
Lawrence Livermore 0
Los Alamos 0
MELWEB 17,998
Searchlight 2,555
Other - UC 59
Other-Network UC 179
_____
22,270
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 6,053
Davis 8,344
Irvine 644
Los Angeles 1,119
Riverside 1,806
San Diego 477
San Francisco 152
Santa Barbara 2,363
Santa Cruz 2,465
Lawrence Berkeley 80
Lawrence Livermore 0
Los Alamos 0
MELWEB 554,698
Searchlight 18,990
Other - UC 764
Other-Network UC 4,767
_____
602,722
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 6.8
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:30
Average session length (minutes:seconds) 20:33
Longest session recorded (minutes:seconds) 285:43
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 977.3
Retrievals per search - standard deviation 15296
Percent of searches completed with 0 results 20.2%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 22,270 13.1%
PRESENT 138,433 81.6%
INIT or CLOSE 8,651 5.1%
OTHER 373 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 5,971 18.6% 1,114 18.7% 10 162.5 2906.2
TITLE WORD 2,661 8.3% 773 29.0% 3 315.7 3817.5
EXACT TITLE 263 0.8% 147 55.9% 1 7.5 24.7
KEYWORD 13,928 43.4% 2,465 17.7% 20 1417.0 20146.5
JOURNAL 1,282 4.0% 505 39.4% 10 2032.7 12150.0
EXACT JOURNAL 456 1.4% 218 47.8% 76 1436.1 4673.5
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 2 0.0% 1 50.0% 6 6.0 0.0
BIOSYS NAMES 32 0.1% 24 75.0% 48 35.1 25.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 52 0.2% 8 15.4% 25 1284.0 7486.6
MAJ CONCEPT CDES 3 0.0% 0 0.0% 92,191 79462.7 73896.3
CONCEPT CODES 5 0.0% 1 20.0% 202 686.8 1116.6
PUBLICATION TYPE 68 0.2% 20 29.4% 24 1199.3 7165.9
DATE 112 0.3% 27 24.1% 7 117.3 450.6
LANGUAGE 33 0.1% 10 30.3% 57 271.2 574.6
ADDED 540 1.7% 362 67.0% 3 16.6 48.8
AUTHOR AFFIL. 86 0.3% 42 48.8% 9 262.8 1484.9
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 4 0.0% 0 0.0% 232 348.8 437.5
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% 1 14.3% 209 1422.8 2658.4
AT 422 1.3% 114 27.0% 6 325.2 2937.1
Other indexes 6,173 19.2% 1,466 23.7% 17 1024.9 10178.1
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 6,746 30.3% 1,842 27.3% 9 492.8 5590.5
Single 15,524 69.7% 2,653 17.1% 20 1503.2 19804.1
PRESENT commands, by type:
MARC 51.1%
OPAC 31.5%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)