MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 01/19/02 through 01/25/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 19,305 498,644
BIO88 2,581 47,314
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 551 5,652
2-4 a.m. 546 2,548
4-6 a.m. 103 2,158
6-8 a.m. 307 13,188
8-10 a.m. 1,288 43,568
10-12 a.m. 3,459 95,294
12-2 p.m. 3,918 85,992
2-4 p.m. 4,491 112,062
4-6 p.m. 3,569 84,363
6-8 p.m. 1,702 43,071
8-10 p.m. 1,111 36,327
10-12 p.m. 841 21,735
__________ _____________ _________________
Total: 21,886 545,958
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 391
Davis 481
Irvine 17
Los Angeles 59
Riverside 114
San Diego 117
San Francisco 20
Santa Barbara 272
Santa Cruz 179
Lawrence Berkeley 9
Lawrence Livermore 0
Los Alamos 0
MELWEB 18,108
Searchlight 1,791
Other - UC 98
Other-Network UC 230
_____
21,886
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,781
Davis 5,279
Irvine 101
Los Angeles 1,766
Riverside 1,861
San Diego 791
San Francisco 312
Santa Barbara 2,686
Santa Cruz 1,740
Lawrence Berkeley 32
Lawrence Livermore 0
Los Alamos 0
MELWEB 510,112
Searchlight 9,821
Other - UC 1,193
Other-Network UC 5,483
_____
545,958
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.8
Standard deviation in seconds 11.2
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 2.1
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:49
Average session length (minutes:seconds) 23:57
Longest session recorded (minutes:seconds) 249:25
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 1234.9
Retrievals per search - standard deviation 11655
Percent of searches completed with 0 results 19.4%
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 21,886 14.0%
PRESENT 125,633 80.4%
INIT or CLOSE 8,074 5.2%
OTHER 629 0.4%
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 6,402 19.0% 1,071 16.7% 9 124.7 1928.1
TITLE WORD 3,661 10.9% 1,223 33.4% 4 402.6 3762.0
EXACT TITLE 211 0.6% 129 61.1% 1 80.0 383.4
KEYWORD 12,633 37.6% 2,036 16.1% 25 1819.3 14243.7
JOURNAL 1,298 3.9% 391 30.1% 6 5641.3 27272.8
EXACT JOURNAL 425 1.3% 166 39.1% 15 1751.2 5400.4
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 10 0.0% 9 90.0% 3 3.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 73 0.2% 10 13.7% 17 377.4 1666.1
MAJ CONCEPT CDES 6 0.0% 0 0.0% 12,574 40386.5 54340.2
CONCEPT CODES 1 0.0% 0 0.0% 1 1.0 0.0
PUBLICATION TYPE 50 0.1% 9 18.0% 26 336.0 1054.6
DATE 147 0.4% 16 10.9% 7 41.3 99.2
LANGUAGE 34 0.1% 5 14.7% 37 387.3 1479.4
ADDED 846 2.5% 673 79.6% 4 22.9 167.7
AUTHOR AFFIL. 121 0.4% 36 29.8% 8 269.7 1852.6
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 1 0.0% 1 100% 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 1 0.0% 0 0.0% 392 392.0 0.0
AT 179 0.5% 35 19.6% 17 1245.8 6989.6
Other indexes 7,511 22.3% 1,276 17.0% 35 1499.5 9243.7
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 7,748 35.4% 2,034 26.3% 10 931.8 8447.2
Single 14,138 64.6% 2,215 15.7% 22 1820.2 14637.0
PRESENT commands, by type:
MARC 49.8%
OPAC 32.7%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)