MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 05/19/01 through 05/25/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 17,679 465,203
BIO88 3,556 62,507
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 552 6,835
2-4 a.m. 755 7,277
4-6 a.m. 148 3,156
6-8 a.m. 573 13,572
8-10 a.m. 1,380 34,735
10-12 a.m. 3,259 80,490
12-2 p.m. 3,411 82,113
2-4 p.m. 3,938 112,522
4-6 p.m. 3,463 91,045
6-8 p.m. 1,732 46,082
8-10 p.m. 1,119 28,032
10-12 p.m. 905 21,851
__________ _____________ _________________
Total: 21,235 527,710
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 172
Davis 653
Irvine 45
Los Angeles 289
Riverside 90
San Diego 67
San Francisco 15
Santa Barbara 146
Santa Cruz 42
Lawrence Berkeley 0
Lawrence Livermore 5
Los Alamos 0
MELWEB 15,788
Searchlight 3,351
Other - UC 85
Other-Network UC 487
_____
21,235
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 1,764
Davis 9,313
Irvine 479
Los Angeles 2,956
Riverside 1,197
San Diego 442
San Francisco 177
Santa Barbara 2,839
Santa Cruz 225
Lawrence Berkeley 0
Lawrence Livermore 354
Los Alamos 0
MELWEB 490,819
Searchlight 10,525
Other - UC 1,218
Other-Network UC 5,402
_____
527,710
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.3
Standard deviation in seconds 11.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:14
Average session length (minutes:seconds) 19:35
Longest session recorded (minutes:seconds) 306:39
Average number of searches completed per session 0.0
Retrievals per search - median 6.0
Retrievals per search - average 842.4
Retrievals per search - standard deviation 9516.8
Percent of searches completed with 0 results 23.3%
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 21,235 14.1%
PRESENT 120,545 80.1%
INIT or CLOSE 8,296 5.5%
OTHER 358 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 5,481 17.7% 1,052 19.2% 8 91.5 835.9
TITLE WORD 3,217 10.4% 1,338 41.6% 4 388.0 3844.9
EXACT TITLE 215 0.7% 106 49.3% 1 21.4 139.0
KEYWORD 13,202 42.7% 2,652 20.1% 19 1131.0 9972.8
JOURNAL 1,206 3.9% 445 36.9% 4 2413.4 14760.2
EXACT JOURNAL 328 1.1% 145 44.2% 288 2112.0 4687.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 4 0.0% 4 100% 0 0.0 0.0
BIOSYS NAMES 19 0.1% 13 68.4% 70 756.5 1197.4
BIOSYS CODES 1 0.0% 0 0.0% 1 1.0 0.0
SUPERTAXA 48 0.2% 6 12.5% 34 490.4 2207.6
MAJ CONCEPT CDES 6 0.0% 0 0.0% 47,902 79884.7 93952.3
CONCEPT CODES 3 0.0% 0 0.0% 22 38.0 47.1
PUBLICATION TYPE 71 0.2% 13 18.3% 25 888.9 6256.8
DATE 190 0.6% 33 17.4% 4 159.9 553.5
LANGUAGE 82 0.3% 19 23.2% 61 1658.3 6549.6
ADDED 1,215 3.9% 1,000 82.3% 3 10.2 20.9
AUTHOR AFFIL. 88 0.3% 39 44.3% 11 28.5 62.5
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 10 0.0% 3 30.0% 7 668.6 1134.3
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 5 0.0% 2 40.0% 91 145.0 158.1
AT 313 1.0% 75 24.0% 21 345.4 1168.1
Other indexes 5,239 16.9% 1,135 21.7% 21 1526.0 13646.4
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 7,239 34.1% 2,371 32.8% 9 732.5 5627.6
Single 13,996 65.9% 2,572 18.4% 19 1253.6 12425.1
PRESENT commands, by type:
MARC 49.6%
OPAC 37.1%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)