MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 04/06/02 through 04/12/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 21,167 511,893
BIO88 3,844 52,658
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,197 22,159
2-4 a.m. 692 9,076
4-6 a.m. 151 5,282
6-8 a.m. 613 12,610
8-10 a.m. 1,538 31,785
10-12 a.m. 3,766 80,621
12-2 p.m. 3,632 85,656
2-4 p.m. 4,405 99,246
4-6 p.m. 3,804 92,517
6-8 p.m. 1,968 50,859
8-10 p.m. 1,986 45,235
10-12 p.m. 1,259 29,505
__________ _____________ _________________
Total: 25,011 564,551
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 199
Davis 657
Irvine 32
Los Angeles 123
Riverside 32
San Diego 45
San Francisco 0
Santa Barbara 44
Santa Cruz 88
Lawrence Berkeley 1
Lawrence Livermore 11
Los Alamos 0
MELWEB 19,249
Searchlight 4,054
Other - UC 103
Other-Network UC 373
_____
25,011
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 1,803
Davis 9,735
Irvine 217
Los Angeles 1,551
Riverside 1,773
San Diego 242
San Francisco 0
Santa Barbara 1,962
Santa Cruz 718
Lawrence Berkeley 0
Lawrence Livermore 855
Los Alamos 0
MELWEB 524,644
Searchlight 15,881
Other - UC 372
Other-Network UC 4,798
_____
564,551
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.5
Standard deviation in seconds 6.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:18
Average session length (minutes:seconds) 19:10
Longest session recorded (minutes:seconds) 176:40
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 1538.9
Retrievals per search - standard deviation 14211
Percent of searches completed with 0 results 21.8%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 25,011 15.4%
PRESENT 125,989 77.7%
INIT or CLOSE 10,218 6.3%
OTHER 961 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 6,078 18.1% 1,086 17.9% 9 93.7 732.9
TITLE WORD 3,448 10.3% 1,412 40.9% 4 200.4 2173.4
EXACT TITLE 204 0.6% 119 58.3% 1 12.4 44.4
KEYWORD 16,386 48.8% 3,075 18.8% 24 2546.1 18696.0
JOURNAL 1,175 3.5% 389 33.1% 5 1783.7 9609.2
EXACT JOURNAL 314 0.9% 126 40.1% 86 1940.7 4804.4
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 8 0.0% 4 50.0% 304 883.3 1389.7
BIOSYS NAMES 30 0.1% 19 63.3% 12 142.5 338.8
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 58 0.2% 12 20.7% 25 350.0 1255.3
MAJ CONCEPT CDES 6 0.0% 0 0.0% 113240 99250.0 62896.1
CONCEPT CODES 5 0.0% 1 20.0% 606 31679.0 62541.5
PUBLICATION TYPE 53 0.2% 9 17.0% 21 925.3 2581.4
DATE 131 0.4% 26 19.8% 5 47.2 118.0
LANGUAGE 52 0.2% 9 17.3% 29 694.0 2048.1
ADDED 1,053 3.1% 858 81.5% 3 11.9 24.3
AUTHOR AFFIL. 108 0.3% 34 31.5% 13 48.8 132.9
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 2 0.0% 1 50.0% 1,383 1383.0 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 6 0.0% 0 0.0% 203 2651.3 4010.5
AT 157 0.5% 29 18.5% 29 1692.6 7923.3
Other indexes 4,271 12.7% 752 17.6% 21 1002.9 8314.2
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 6,844 27.4% 2,090 30.5% 8 431.0 3425.3
Single 18,167 72.6% 3,369 18.5% 24 2462.6 18315.2
PRESENT commands, by type:
MARC 48.7%
OPAC 29.7%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)