MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 02/16/02 through 02/22/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 19,987 515,791
BIO88 3,380 64,280
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,042 12,611
2-4 a.m. 546 4,836
4-6 a.m. 110 982
6-8 a.m. 304 10,718
8-10 a.m. 1,463 39,798
10-12 a.m. 3,441 84,620
12-2 p.m. 3,731 108,610
2-4 p.m. 4,329 97,417
4-6 p.m. 3,846 102,842
6-8 p.m. 2,158 56,321
8-10 p.m. 1,430 38,140
10-12 p.m. 967 23,176
__________ _____________ _________________
Total: 23,367 580,071
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 420
Davis 456
Irvine 1
Los Angeles 109
Riverside 48
San Diego 137
San Francisco 10
Santa Barbara 135
Santa Cruz 79
Lawrence Berkeley 4
Lawrence Livermore 0
Los Alamos 0
MELWEB 18,957
Searchlight 2,561
Other - UC 66
Other-Network UC 384
_____
23,367
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,616
Davis 9,857
Irvine 11
Los Angeles 2,573
Riverside 1,525
San Diego 1,395
San Francisco 310
Santa Barbara 1,219
Santa Cruz 436
Lawrence Berkeley 1
Lawrence Livermore 0
Los Alamos 0
MELWEB 540,329
Searchlight 9,178
Other - UC 357
Other-Network UC 8,264
_____
580,071
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.9
Standard deviation in seconds 7.8
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:21
Average session length (minutes:seconds) 22:29
Longest session recorded (minutes:seconds) 210:29
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 800.4
Retrievals per search - standard deviation 9955.9
Percent of searches completed with 0 results 20.3%
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 23,367 13.7%
PRESENT 136,720 80.4%
INIT or CLOSE 9,016 5.3%
OTHER 1,015 0.6%
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 6,894 20.8% 1,241 18.0% 10 122.9 1051.0
TITLE WORD 3,724 11.2% 1,435 38.5% 4 620.9 8523.7
EXACT TITLE 198 0.6% 121 61.1% 1 4.2 12.2
KEYWORD 13,388 40.4% 2,136 16.0% 25 1099.1 12076.7
JOURNAL 1,693 5.1% 562 33.2% 6 2314.6 14185.8
EXACT JOURNAL 252 0.8% 98 38.9% 94 2328.4 6993.1
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 10 0.0% 7 70.0% 24 18.0 14.9
BIOSYS NAMES 10 0.0% 10 100% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 39 0.1% 5 12.8% 28 211.9 444.9
MAJ CONCEPT CDES 12 0.0% 0 0.0% 51,273 65335.9 93303.6
CONCEPT CODES 4 0.0% 0 0.0% 43 76.5 100.5
PUBLICATION TYPE 77 0.2% 25 32.5% 11 428.8 1641.6
DATE 184 0.6% 24 13.0% 6 47.7 138.4
LANGUAGE 52 0.2% 11 21.2% 13 658.4 1935.6
ADDED 1,045 3.2% 871 83.3% 4 7.5 10.2
AUTHOR AFFIL. 127 0.4% 52 40.9% 9 43.7 130.8
ACCESSION NO. 2 0.0% 2 100% 0 0.0 0.0
ISSN 4 0.0% 3 75.0% 351 351.0 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 3 0.0% 2 66.7% 21 21.0 0.0
AT 307 0.9% 99 32.2% 13 635.6 4001.7
Other indexes 5,126 15.5% 953 18.6% 19 826.7 6720.7
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 7,600 32.5% 2,295 30.2% 8 445.2 3478.7
Single 15,767 67.5% 2,450 15.5% 25 1227.1 12986.5
PRESENT commands, by type:
MARC 51.2%
OPAC 31.3%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)