MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 03/31/01 through 04/06/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 14,517 372,402
BIO88 2,633 43,007
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 837 8,779
2-4 a.m. 155 3,054
4-6 a.m. 352 3,063
6-8 a.m. 324 11,132
8-10 a.m. 1,135 26,999
10-12 a.m. 2,899 66,089
12-2 p.m. 2,888 68,387
2-4 p.m. 3,204 90,891
4-6 p.m. 2,685 63,228
6-8 p.m. 1,294 33,891
8-10 p.m. 822 24,642
10-12 p.m. 555 15,254
__________ _____________ _________________
Total: 17,150 415,409
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 368
Davis 585
Irvine 1
Los Angeles 111
Riverside 39
San Diego 124
San Francisco 2
Santa Barbara 125
Santa Cruz 6
Lawrence Berkeley 76
Lawrence Livermore 18
Los Alamos 0
MELWEB 12,457
Searchlight 2,664
Other - UC 73
Other-Network UC 501
_____
17,150
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,787
Davis 9,012
Irvine 129
Los Angeles 3,479
Riverside 1,106
San Diego 749
San Francisco 10
Santa Barbara 739
Santa Cruz 227
Lawrence Berkeley 895
Lawrence Livermore 56
Los Alamos 0
MELWEB 377,660
Searchlight 10,528
Other - UC 818
Other-Network UC 7,214
_____
415,409
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.9
Standard deviation in seconds 7.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:09
Average session length (minutes:seconds) 19:02
Longest session recorded (minutes:seconds) 176:52
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 770.4
Retrievals per search - standard deviation 6952.8
Percent of searches completed with 0 results 21.7%
Percent of searches entered that are long 0.1%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 17,150 14.1%
PRESENT 97,309 80.0%
INIT or CLOSE 7,013 5.8%
OTHER 160 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 5,259 22.5% 938 17.8% 9 89.6 777.8
TITLE WORD 2,185 9.3% 1,008 46.1% 4 344.2 3123.4
EXACT TITLE 160 0.7% 89 55.6% 1 96.6 724.6
KEYWORD 10,175 43.5% 1,824 17.9% 19 1136.3 8271.2
JOURNAL 994 4.2% 350 35.2% 7 2701.4 15558.3
EXACT JOURNAL 178 0.8% 75 42.1% 292 1734.9 3779.6
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 6 0.0% 4 66.7% 103 103.0 0.0
BIOSYS NAMES 6 0.0% 4 66.7% 48 48.0 35.4
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 23 0.1% 5 21.7% 10 227.7 538.2
MAJ CONCEPT CDES 2 0.0% 0 0.0% 42,141 42140.5 38598.8
CONCEPT CODES 4 0.0% 0 0.0% 139 137.5 155.3
PUBLICATION TYPE 18 0.1% 5 27.8% 6 170.5 515.0
DATE 149 0.6% 36 24.2% 6 85.4 353.4
LANGUAGE 32 0.1% 10 31.3% 35 167.4 600.7
ADDED 1,102 4.7% 897 81.4% 4 16.0 55.5
AUTHOR AFFIL. 209 0.9% 35 16.7% 4 93.2 964.2
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 7 0.0% 0 0.0% 4 3.6 1.3
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 0 0.0% 0 0.0% 0 0.0 0.0
AT 137 0.6% 34 24.8% 18 1141.6 7399.6
Other indexes 2,757 11.8% 644 23.4% 20 1341.4 8135.1
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 4,986 29.1% 1,745 35.0% 7 508.5 4491.0
Single 12,164 70.9% 1,976 16.2% 21 1135.1 8636.7
PRESENT commands, by type:
MARC 52.1%
OPAC 26.9%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)