MELSRV PSYCINFO DATABASES Z39.50 SERVER STATISTICS
Time period: 02/01/99 through 02/28/99
1.0 SUMMARY STATISTICS
_______________________
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 748 36,623
2-4 a.m. 321 11,976
4-6 a.m. 109 8,936
6-8 a.m. 331 10,554
8-10 a.m. 3,180 104,344
10-12 a.m. 7,894 312,846
12-2 p.m. 9,821 412,421
2-4 p.m. 11,388 496,936
4-6 p.m. 8,664 355,958
6-8 p.m. 5,319 234,005
8-10 p.m. 3,962 162,932
10-12 p.m. 2,431 96,909
__________ _____________ _________________
Total: 54,168 2,244,440
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 579
Davis 185
Irvine 208
Los Angeles 138
Riverside 0
San Diego 975
San Francisco 143
Santa Barbara 76
Santa Cruz 22
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 50,297
Other - UC 781
Other-Network UC 764
_____
54,168
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 6,114
Davis 260
Irvine 3,673
Los Angeles 1,906
Riverside 0
San Diego 6,940
San Francisco 1,698
Santa Barbara 931
Santa Cruz 196
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 2,207,369
Other - UC 6,897
Other-Network UC 8,456
_____
2,244,440
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 5.6
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 1.3
2.0 PSYCINFO Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 27:32
Average session length (minutes:seconds) 31:48
Longest session recorded (minutes:seconds) 246:53
Average number of searches completed per session 0.0
Retrievals per search - median 9.0
Retrievals per search - average 1156.9
Retrievals per search - standard deviation 9629.1
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 0.4%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 54,168 10.3%
PRESENT 459,034 87.4%
INIT or CLOSE 11,818 2.3%
OTHER 146 0.0%
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 14,645 16.1% 4,045 27.6% 11 119.2 2539.0
TITLE WORD 5,229 5.8% 2,179 41.7% 3 236.3 1599.5
EXACT TITLE 961 1.1% 590 61.4% 1 111.7 1411.1
JOURNAL 3,197 3.5% 1,465 45.8% 7 2096.5 14608.8
EXACT JOURNAL 1,484 1.6% 627 42.3% 342 17471.0 50617.9
SUBJECT 4,934 5.4% 2,384 48.3% 91 2798.6 11794.0
EXACT SUBJECT 2,535 2.8% 890 35.1% 80 1054.1 5401.0
KEYWORD 30,448 33.5% 6,160 20.2% 45 1475.9 8783.1
AUTHOR AFFIL 230 0.3% 189 82.2% 3 534.8 2228.7
FORM/PUB TYPE 3,344 3.7% 936 28.0% 39 543.9 2434.1
DATE 3,955 4.4% 1,074 27.2% 25 431.0 2228.8
ADDED 158 0.2% 136 86.1% 12 101.3 257.4
CONFERENCE 8 0.0% 6 75.0% 2 1.5 0.7
LANGUAGE 8,433 9.3% 2,176 25.8% 93 1974.8 9498.4
ISSN 5 0.0% 5 100% 0 0.0 0.0
ISBN 11 0.0% 11 100% 0 0.0 0.0
ID NUMBER 17 0.0% 16 94.1% 1 1.0 0.0
XXS 183 0.2% 47 25.7% 34 256.5 1135.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 752 0.8% 194 25.8% 89 1052.8 3553.6
AT 10,333 11.4% 2,821 27.3% 57 1708.7 8819.9
Other indexes 1 0.0% 1 100% 0 0.0 0.0
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 20,309 37.5% 6,321 31.1% 30 1428.8 8412.5
Single 33,859 62.5% 8,210 24.2% 32 1664.0 12496.8
PRESENT commands, by type:
MARC 42.0%
OPAC 44.0%