MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 04/07/01 through 04/13/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 19,098 512,257
BIO88 3,342 60,517
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,046 16,210
2-4 a.m. 690 5,720
4-6 a.m. 149 2,144
6-8 a.m. 433 10,691
8-10 a.m. 1,394 29,096
10-12 a.m. 3,386 84,545
12-2 p.m. 3,535 82,165
2-4 p.m. 4,313 113,119
4-6 p.m. 3,306 114,537
6-8 p.m. 1,772 46,271
8-10 p.m. 1,325 39,536
10-12 p.m. 1,091 28,740
__________ _____________ _________________
Total: 22,440 572,774
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 341
Davis 457
Irvine 18
Los Angeles 470
Riverside 155
San Diego 143
San Francisco 9
Santa Barbara 40
Santa Cruz 22
Lawrence Berkeley 20
Lawrence Livermore 1
Los Alamos 0
MELWEB 16,341
Searchlight 3,795
Other - UC 30
Other-Network UC 598
_____
22,440
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 6,722
Davis 8,114
Irvine 76
Los Angeles 2,012
Riverside 1,776
San Diego 2,953
San Francisco 165
Santa Barbara 2,056
Santa Cruz 426
Lawrence Berkeley 144
Lawrence Livermore 0
Los Alamos 0
MELWEB 516,936
Searchlight 25,593
Other - UC 178
Other-Network UC 5,623
_____
572,774
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.1
Standard deviation in seconds 7.6
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) 21:38
Average session length (minutes:seconds) 20:42
Longest session recorded (minutes:seconds) 191:24
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 1046.1
Retrievals per search - standard deviation 10204
Percent of searches completed with 0 results 24.0%
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 22,440 13.9%
PRESENT 130,452 80.6%
INIT or CLOSE 8,230 5.1%
OTHER 752 0.5%
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 6,026 18.7% 1,203 20.0% 9 123.5 1054.2
TITLE WORD 4,291 13.3% 2,108 49.1% 5 566.7 6759.9
EXACT TITLE 185 0.6% 106 57.3% 1 38.0 248.0
KEYWORD 12,846 39.9% 2,195 17.1% 27 1596.1 12599.5
JOURNAL 1,157 3.6% 427 36.9% 7 2181.0 11497.2
EXACT JOURNAL 287 0.9% 143 49.8% 257 2302.3 4837.1
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 4 0.0% 2 50.0% 42 41.5 26.2
BIOSYS NAMES 15 0.0% 10 66.7% 32 27.4 22.6
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 50 0.2% 2 4.0% 57 977.5 3235.5
MAJ CONCEPT CDES 2 0.0% 0 0.0% 48,203 48202.5 61885.3
CONCEPT CODES 7 0.0% 1 14.3% 129738 108115 52964.9
PUBLICATION TYPE 26 0.1% 2 7.7% 17 95.8 231.0
DATE 139 0.4% 29 20.9% 4 32.5 103.4
LANGUAGE 141 0.4% 6 4.3% 37 4976.1 24604.6
ADDED 1,914 5.9% 1,680 87.8% 3 11.9 40.4
AUTHOR AFFIL. 101 0.3% 43 42.6% 6 16.1 32.4
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 7 0.0% 1 14.3% 232 196.0 93.8
ISBN 2 0.0% 1 50.0% 166 166.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 4 0.0% 0 0.0% 19 27.3 32.8
AT 249 0.8% 38 15.3% 37 431.7 3606.5
Other indexes 4,773 14.8% 935 19.6% 28 1443.6 12417.1
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 7,280 32.4% 2,907 39.9% 10 780.1 7806.9
Single 15,160 67.6% 2,470 16.3% 24 1581.0 12741.6
PRESENT commands, by type:
MARC 51.5%
OPAC 28.9%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)