MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 04/21/01 through 04/27/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 19,134 519,650
BIO88 3,571 51,259
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,076 12,863
2-4 a.m. 435 2,340
4-6 a.m. 108 1,778
6-8 a.m. 483 9,482
8-10 a.m. 1,605 37,538
10-12 a.m. 3,227 83,420
12-2 p.m. 3,582 101,573
2-4 p.m. 4,111 96,748
4-6 p.m. 3,374 93,322
6-8 p.m. 1,836 57,267
8-10 p.m. 1,663 40,670
10-12 p.m. 1,205 33,908
__________ _____________ _________________
Total: 22,705 570,909
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 483
Davis 392
Irvine 11
Los Angeles 36
Riverside 137
San Diego 133
San Francisco 23
Santa Barbara 155
Santa Cruz 53
Lawrence Berkeley 12
Lawrence Livermore 5
Los Alamos 0
MELWEB 16,989
Searchlight 3,901
Other - UC 114
Other-Network UC 261
_____
22,705
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 7,087
Davis 9,752
Irvine 50
Los Angeles 390
Riverside 1,100
San Diego 1,244
San Francisco 161
Santa Barbara 2,865
Santa Cruz 561
Lawrence Berkeley 129
Lawrence Livermore 237
Los Alamos 0
MELWEB 524,547
Searchlight 16,502
Other - UC 1,584
Other-Network UC 4,700
_____
570,909
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 8.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:30
Average session length (minutes:seconds) 20:15
Longest session recorded (minutes:seconds) 253:36
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 1009.9
Retrievals per search - standard deviation 10289
Percent of searches completed with 0 results 23.1%
Percent of searches entered that are long 0.4%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 22,705 13.5%
PRESENT 136,279 81.0%
INIT or CLOSE 8,941 5.3%
OTHER 379 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 5,453 17.0% 1,043 19.1% 10 108.3 1182.0
TITLE WORD 3,457 10.8% 1,674 48.4% 5 469.4 3737.7
EXACT TITLE 178 0.6% 82 46.1% 1 63.0 244.2
KEYWORD 14,273 44.4% 2,633 18.4% 22 1396.5 11040.0
JOURNAL 1,065 3.3% 402 37.7% 8 2797.1 17038.8
EXACT JOURNAL 234 0.7% 108 46.2% 283 2013.3 6323.3
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 3 0.0% 2 66.7% 33 33.0 0.0
BIOSYS NAMES 18 0.1% 17 94.4% 4 4.0 0.0
BIOSYS CODES 1 0.0% 0 0.0% 90 90.0 0.0
SUPERTAXA 50 0.2% 12 24.0% 27 525.2 1050.7
MAJ CONCEPT CDES 3 0.0% 0 0.0% 3,608 5326.7 5193.8
CONCEPT CODES 14 0.0% 0 0.0% 25 984.4 3262.5
PUBLICATION TYPE 49 0.2% 8 16.3% 28 819.4 2029.5
DATE 131 0.4% 26 19.8% 5 82.3 354.9
LANGUAGE 65 0.2% 14 21.5% 33 524.7 1084.2
ADDED 1,509 4.7% 1,299 86.1% 3 9.6 16.1
AUTHOR AFFIL. 81 0.3% 29 35.8% 10 426.9 2524.3
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 9 0.0% 8 88.9% 792 792.0 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 2 0.0% 0 0.0% 59 59.0 0.0
AT 249 0.8% 48 19.3% 25 612.5 2461.0
Other indexes 5,284 16.4% 967 18.3% 30 1799.2 14543.0
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 6,666 29.4% 2,437 36.6% 12 734.1 5692.9
Single 16,039 70.6% 2,801 17.5% 20 1497.5 13059.3
PRESENT commands, by type:
MARC 50.7%
OPAC 34.6%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)