MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 01/12/02 through 01/18/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 18,952 488,832
BIO88 2,564 44,953
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 847 16,402
2-4 a.m. 691 6,150
4-6 a.m. 98 2,456
6-8 a.m. 369 11,929
8-10 a.m. 1,461 34,819
10-12 a.m. 3,220 92,905
12-2 p.m. 3,498 81,160
2-4 p.m. 4,088 104,193
4-6 p.m. 3,325 89,436
6-8 p.m. 1,553 34,192
8-10 p.m. 1,275 30,691
10-12 p.m. 1,091 29,452
__________ _____________ _________________
Total: 21,516 533,785
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 536
Davis 446
Irvine 18
Los Angeles 47
Riverside 144
San Diego 74
San Francisco 4
Santa Barbara 180
Santa Cruz 48
Lawrence Berkeley 5
Lawrence Livermore 2
Los Alamos 0
MELWEB 17,219
Searchlight 2,431
Other - UC 11
Other-Network UC 351
_____
21,516
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,922
Davis 10,696
Irvine 346
Los Angeles 661
Riverside 1,693
San Diego 773
San Francisco 123
Santa Barbara 1,961
Santa Cruz 1,217
Lawrence Berkeley 44
Lawrence Livermore 22
Los Alamos 0
MELWEB 494,486
Searchlight 7,899
Other - UC 49
Other-Network UC 8,893
_____
533,785
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 12.1
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:03
Average session length (minutes:seconds) 22:04
Longest session recorded (minutes:seconds) 197:25
Average number of searches completed per session 0.0
Retrievals per search - median 9.0
Retrievals per search - average 1432.6
Retrievals per search - standard deviation 16529
Percent of searches completed with 0 results 20.7%
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 21,516 13.8%
PRESENT 125,524 80.6%
INIT or CLOSE 7,981 5.1%
OTHER 634 0.4%
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 5,966 20.7% 1,002 16.8% 9 120.6 1720.2
TITLE WORD 2,967 10.3% 1,225 41.3% 4 604.7 6531.9
EXACT TITLE 205 0.7% 126 61.5% 1 44.5 234.6
KEYWORD 13,210 45.9% 2,302 17.4% 27 2356.5 22189.3
JOURNAL 1,197 4.2% 395 33.0% 6 2528.8 14883.2
EXACT JOURNAL 299 1.0% 103 34.4% 90 1755.2 4841.9
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 6 0.0% 3 50.0% 1 2.7 2.9
BIOSYS NAMES 13 0.0% 8 61.5% 22 43.8 59.9
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 47 0.2% 2 4.3% 166 714.7 1227.4
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 7 0.0% 0 0.0% 46 2399.4 5795.8
PUBLICATION TYPE 35 0.1% 0 0.0% 29 797.0 2769.6
DATE 107 0.4% 14 13.1% 15 948.1 3414.2
LANGUAGE 18 0.1% 0 0.0% 11 2355.8 5374.4
ADDED 1,106 3.8% 956 86.4% 3 14.5 45.7
AUTHOR AFFIL. 129 0.4% 37 28.7% 14 40.0 115.6
ACCESSION NO. 0 0.0% 0 0.0% 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% 0 0.0% 98 98.0 0.0
AT 135 0.5% 37 27.4% 14 583.0 2834.8
Other indexes 3,352 11.6% 554 16.5% 22 1225.8 10894.4
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 5,975 27.8% 1,959 32.8% 9 574.4 5481.3
Single 15,541 72.2% 2,495 16.1% 23 2185.9 20973.0
PRESENT commands, by type:
MARC 53.6%
OPAC 24.5%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)