MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 04/13/02 through 04/19/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 23,391 625,361
BIO88 4,385 64,137
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 863 14,639
2-4 a.m. 356 4,850
4-6 a.m. 123 6,120
6-8 a.m. 356 7,184
8-10 a.m. 1,524 31,194
10-12 a.m. 4,209 105,809
12-2 p.m. 4,844 119,922
2-4 p.m. 5,688 145,729
4-6 p.m. 4,070 103,954
6-8 p.m. 2,573 64,468
8-10 p.m. 1,946 56,732
10-12 p.m. 1,224 28,897
__________ _____________ _________________
Total: 27,776 689,498
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 171
Davis 565
Irvine 26
Los Angeles 155
Riverside 125
San Diego 32
San Francisco 1
Santa Barbara 131
Santa Cruz 75
Lawrence Berkeley 1
Lawrence Livermore 0
Los Alamos 0
MELWEB 22,189
Searchlight 3,782
Other - UC 59
Other-Network UC 464
_____
27,776
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,259
Davis 7,639
Irvine 381
Los Angeles 2,264
Riverside 2,567
San Diego 200
San Francisco 9
Santa Barbara 879
Santa Cruz 705
Lawrence Berkeley 1
Lawrence Livermore 0
Los Alamos 0
MELWEB 655,126
Searchlight 11,577
Other - UC 359
Other-Network UC 5,532
_____
689,498
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 13.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 1.1
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:39
Average session length (minutes:seconds) 20:05
Longest session recorded (minutes:seconds) 171:12
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 1247.0
Retrievals per search - standard deviation 13106
Percent of searches completed with 0 results 21.2%
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 27,776 14.3%
PRESENT 152,513 78.8%
INIT or CLOSE 11,681 6.0%
OTHER 1,662 0.9%
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 6,832 17.2% 1,216 17.8% 9 135.4 1893.5
TITLE WORD 3,637 9.2% 1,130 31.1% 5 388.5 5528.0
EXACT TITLE 297 0.7% 159 53.5% 1 31.1 291.0
KEYWORD 17,986 45.4% 3,597 20.0% 25 1679.9 14974.5
JOURNAL 1,363 3.4% 533 39.1% 7 4649.3 19595.9
EXACT JOURNAL 282 0.7% 132 46.8% 164 3615.9 10228.9
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 4 0.0% 2 50.0% 24 24.0 7.1
BIOSYS NAMES 27 0.1% 20 74.1% 40 116.7 219.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 71 0.2% 5 7.0% 29 2689.6 7685.1
MAJ CONCEPT CDES 4 0.0% 0 0.0% 20,927 35820.8 40841.6
CONCEPT CODES 5 0.0% 0 0.0% 4,150 5595.2 4560.3
PUBLICATION TYPE 116 0.3% 9 7.8% 33 1805.5 5912.8
DATE 157 0.4% 27 17.2% 7 126.8 558.2
LANGUAGE 76 0.2% 11 14.5% 39 2939.4 7534.3
ADDED 653 1.6% 427 65.4% 3 10.1 17.0
AUTHOR AFFIL. 145 0.4% 41 28.3% 11 40.3 114.3
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 4 0.0% 2 50.0% 564 564.0 649.1
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 4 0.0% 0 0.0% 161 331.3 465.2
AT 281 0.7% 46 16.4% 19 1428.4 5323.5
Other indexes 7,715 19.5% 1,477 19.1% 42 2509.9 16190.7
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 7,729 27.8% 1,981 25.6% 13 1360.2 8775.8
Single 20,047 72.2% 3,899 19.4% 21 1660.7 16349.3
PRESENT commands, by type:
MARC 47.1%
OPAC 35.5%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)