MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 03/23/02 through 03/29/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 12,511 312,261
BIO88 2,178 30,106
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 602 9,461
2-4 a.m. 424 6,471
4-6 a.m. 112 2,449
6-8 a.m. 513 12,961
8-10 a.m. 1,092 29,020
10-12 a.m. 2,314 63,209
12-2 p.m. 2,537 58,105
2-4 p.m. 3,090 66,915
4-6 p.m. 2,156 52,720
6-8 p.m. 909 20,687
8-10 p.m. 618 13,194
10-12 p.m. 322 7,175
__________ _____________ _________________
Total: 14,689 342,367
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 223
Davis 826
Irvine 127
Los Angeles 123
Riverside 82
San Diego 73
San Francisco 14
Santa Barbara 38
Santa Cruz 38
Lawrence Berkeley 1
Lawrence Livermore 1
Los Alamos 0
MELWEB 10,095
Searchlight 2,461
Other - UC 129
Other-Network UC 458
_____
14,689
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,566
Davis 11,329
Irvine 2,894
Los Angeles 1,090
Riverside 1,778
San Diego 905
San Francisco 13
Santa Barbara 402
Santa Cruz 417
Lawrence Berkeley 5
Lawrence Livermore 10
Los Alamos 0
MELWEB 289,093
Searchlight 18,968
Other - UC 789
Other-Network UC 12,108
_____
342,367
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.7
Standard deviation in seconds 7.0
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) 21:08
Average session length (minutes:seconds) 18:54
Longest session recorded (minutes:seconds) 195:33
Average number of searches completed per session 0.0
Retrievals per search - median 6.0
Retrievals per search - average 917.5
Retrievals per search - standard deviation 17419
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 0.0%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 14,689 12.9%
PRESENT 93,114 81.5%
INIT or CLOSE 5,947 5.2%
OTHER 546 0.5%
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 5,586 28.1% 874 15.6% 8 128.2 1149.7
TITLE WORD 2,682 13.5% 1,127 42.0% 3 432.3 7916.1
EXACT TITLE 92 0.5% 54 58.7% 1 1.3 1.6
KEYWORD 7,493 37.7% 1,480 19.8% 21 1695.1 26157.6
JOURNAL 816 4.1% 272 33.3% 4 4204.4 24888.0
EXACT JOURNAL 183 0.9% 64 35.0% 25 1021.0 2225.7
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 6 0.0% 6 100% 0 0.0 0.0
BIOSYS NAMES 3 0.0% 3 100% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 19 0.1% 1 5.3% 55 306.2 618.7
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.0% 0 0.0% 59 65.0 65.2
PUBLICATION TYPE 16 0.1% 7 43.8% 108 214.3 349.4
DATE 89 0.4% 20 22.5% 7 25.1 67.5
LANGUAGE 12 0.1% 4 33.3% 58 244.4 382.4
ADDED 1,057 5.3% 812 76.8% 5 15.7 40.7
AUTHOR AFFIL. 103 0.5% 29 28.2% 14 40.6 133.3
ACCESSION NO. 0 0.0% 0 0.0% 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 0 0.0% 0 0.0% 0 0.0 0.0
AT 39 0.2% 9 23.1% 25 312.7 1126.5
Other indexes 1,674 8.4% 308 18.4% 15 623.1 6601.6
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 4,510 30.7% 1,528 33.9% 5 384.8 7552.8
Single 10,179 69.3% 1,791 17.6% 21 1469.9 22591.2
PRESENT commands, by type:
MARC 59.2%
OPAC 23.8%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)