MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 12/30/00 through 01/05/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 7,204 208,355
BIO88 1,399 35,078
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 332 2,695
2-4 a.m. 133 1,493
4-6 a.m. 103 1,522
6-8 a.m. 186 4,611
8-10 a.m. 717 18,497
10-12 a.m. 1,599 43,752
12-2 p.m. 1,487 43,024
2-4 p.m. 1,826 58,800
4-6 p.m. 1,318 39,262
6-8 p.m. 500 13,126
8-10 p.m. 210 6,362
10-12 p.m. 192 10,289
__________ _____________ _________________
Total: 8,603 243,433
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 346
Davis 472
Irvine 1
Los Angeles 36
Riverside 22
San Diego 26
San Francisco 18
Santa Barbara 20
Santa Cruz 63
Lawrence Berkeley 2
Lawrence Livermore 7
Los Alamos 0
MELWEB 5,772
Searchlight 1,430
Other - UC 17
Other-Network UC 371
_____
8,603
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 24,519
Davis 6,637
Irvine 26
Los Angeles 1,372
Riverside 1,094
San Diego 354
San Francisco 938
Santa Barbara 255
Santa Cruz 919
Lawrence Berkeley 7
Lawrence Livermore 162
Los Alamos 0
MELWEB 193,817
Searchlight 9,997
Other - UC 675
Other-Network UC 2,661
_____
243,433
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 5.5
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) 20:50
Average session length (minutes:seconds) 17:40
Longest session recorded (minutes:seconds) 199:59
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 559.5
Retrievals per search - standard deviation 6180.7
Percent of searches completed with 0 results 21.1%
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 8,603 9.7%
PRESENT 76,455 86.2%
INIT or CLOSE 3,577 4.0%
OTHER 96 0.1%
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 3,488 28.5% 655 18.8% 9 100.5 1390.5
TITLE WORD 1,091 8.9% 300 27.5% 3 244.3 2489.7
EXACT TITLE 65 0.5% 40 61.5% 1 582.8 1832.9
KEYWORD 4,673 38.2% 978 20.9% 21 853.5 6991.0
JOURNAL 377 3.1% 139 36.9% 5 3181.0 19768.3
EXACT JOURNAL 108 0.9% 52 48.1% 227 2134.5 5499.9
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 2 0.0% 1 50.0% 1 1.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 1 0.0% 0 0.0% 22,100 22100.0 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 13 0.1% 1 7.7% 4 33.2 93.8
DATE 109 0.9% 19 17.4% 5 40.0 116.6
LANGUAGE 10 0.1% 2 20.0% 6 94.0 161.6
ADDED 569 4.7% 385 67.7% 3 10.3 17.7
AUTHOR AFFIL. 68 0.6% 27 39.7% 6 101.1 300.7
ACCESSION NO. 2 0.0% 2 100% 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 3 0.0% 1 33.3% 169 169.0 227.7
AT 48 0.4% 17 35.4% 15 358.5 945.4
Other indexes 1,605 13.1% 397 24.7% 14 612.0 7248.1
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 2,877 33.4% 878 30.5% 5 220.9 3432.6
Single 5,726 66.6% 934 16.3% 22 912.4 7961.3
PRESENT commands, by type:
MARC 66.6%
OPAC 23.9%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)