MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 04/27/02 through 05/03/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 22,335 585,401
BIO88 4,183 60,582
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,014 17,292
2-4 a.m. 278 5,923
4-6 a.m. 78 3,336
6-8 a.m. 311 12,569
8-10 a.m. 1,481 36,526
10-12 a.m. 3,821 86,038
12-2 p.m. 4,546 112,495
2-4 p.m. 5,325 130,494
4-6 p.m. 4,228 112,535
6-8 p.m. 2,176 51,954
8-10 p.m. 1,776 40,571
10-12 p.m. 1,484 36,250
__________ _____________ _________________
Total: 26,518 645,983
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 216
Davis 714
Irvine 50
Los Angeles 84
Riverside 60
San Diego 92
San Francisco 1
Santa Barbara 186
Santa Cruz 97
Lawrence Berkeley 6
Lawrence Livermore 0
Los Alamos 0
MELWEB 20,649
Searchlight 3,950
Other - UC 11
Other-Network UC 402
_____
26,518
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 16,651
Davis 13,197
Irvine 575
Los Angeles 1,491
Riverside 1,047
San Diego 567
San Francisco 0
Santa Barbara 1,413
Santa Cruz 2,295
Lawrence Berkeley 93
Lawrence Livermore 0
Los Alamos 0
MELWEB 580,702
Searchlight 22,563
Other - UC 135
Other-Network UC 5,254
_____
645,983
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 7.6
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) 21:17
Average session length (minutes:seconds) 19:09
Longest session recorded (minutes:seconds) 219:09
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 1012.2
Retrievals per search - standard deviation 13913
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 26,518 13.4%
PRESENT 159,267 80.2%
INIT or CLOSE 11,219 5.7%
OTHER 1,497 0.8%
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 6,963 19.4% 1,235 17.7% 9 185.7 2779.0
TITLE WORD 3,336 9.3% 1,025 30.7% 4 217.9 1834.9
EXACT TITLE 201 0.6% 119 59.2% 1 10.5 57.7
KEYWORD 17,189 47.9% 3,424 19.9% 21 1557.0 18245.8
JOURNAL 1,393 3.9% 502 36.0% 6 2528.1 14091.5
EXACT JOURNAL 282 0.8% 121 42.9% 47 2396.2 11966.8
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 11 0.0% 6 54.5% 45 391.8 534.9
BIOSYS NAMES 10 0.0% 9 90.0% 11 11.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 54 0.2% 10 18.5% 29 827.5 3168.6
MAJ CONCEPT CDES 1 0.0% 0 0.0% 49,473 49473.0 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 49 0.1% 6 12.2% 36 1514.7 4208.1
DATE 118 0.3% 19 16.1% 5 111.8 496.5
LANGUAGE 68 0.2% 10 14.7% 20 273.7 1008.1
ADDED 650 1.8% 338 52.0% 9 13.5 18.9
AUTHOR AFFIL. 119 0.3% 53 44.5% 4 15.2 26.3
ACCESSION NO. 2 0.0% 2 100% 0 0.0 0.0
ISSN 2 0.0% 2 100% 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 19 0.1% 2 10.5% 17 80.2 180.6
AT 243 0.7% 62 25.5% 11 533.2 3067.1
Other indexes 5,174 14.4% 1,065 20.6% 21 1737.1 14960.5
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 7,053 26.6% 1,750 24.8% 8 851.5 9131.6
Single 19,465 73.4% 3,880 19.9% 21 1432.6 17333.8
PRESENT commands, by type:
MARC 53.2%
OPAC 29.9%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)