Пичугин, Ю. А. Замечания к использованию главных компонент в математическом моделировании [Электронный ресурс] / Ю. А. Пичугин. — Электрон. текстовые дан. (1 файл : 1,56 Мб) // Научно-технические ведомости Санкт-Петербургского государственного политехнического университета. Сер.: Физико-математические науки. – 2018. – Т. 11, № 3 [Электронный ресурс]. — Загл. с титул. экрана. — Электронная версия печатной публикации. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Текстовый файл. — Adobe Acrobat Reader 7.0. — <URL:http://dx.doi.org/10.18721/JPM.11307>. — <URL:http://elib.spbstu.ru/dl/2/j19-66.pdf>.
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Period
|
Read
|
Print
|
Copy
|
Open
|
Total
|
|
Year 2019
|
Quarter 2
|
May
|
14
|
0
|
5
|
0
|
19
|
|
June
|
8
|
0
|
5
|
0
|
13
|
|
Quarter 3
|
July
|
1
|
0
|
2
|
0
|
3
|
|
August
|
2
|
0
|
4
|
0
|
6
|
|
September
|
5
|
0
|
4
|
0
|
9
|
|
Quarter 4
|
October
|
2
|
0
|
1
|
0
|
3
|
|
November
|
0
|
0
|
2
|
0
|
2
|
|
December
|
0
|
0
|
1
|
0
|
1
|
|
Year 2020
|
Quarter 1
|
January
|
1
|
0
|
1
|
0
|
2
|
|
February
|
0
|
0
|
2
|
0
|
2
|
|
March
|
5
|
0
|
2
|
0
|
7
|
|
Quarter 2
|
April
|
2
|
0
|
0
|
0
|
2
|
|
May
|
5
|
0
|
0
|
0
|
5
|
|
June
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 3
|
July
|
2
|
0
|
0
|
0
|
2
|
|
August
|
1
|
0
|
0
|
0
|
1
|
|
September
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 4
|
October
|
1
|
0
|
1
|
0
|
2
|
|
November
|
1
|
0
|
8
|
0
|
9
|
|
December
|
5
|
0
|
3
|
0
|
8
|
|
Year 2021
|
Quarter 1
|
January
|
4
|
0
|
4
|
0
|
8
|
|
February
|
6
|
0
|
2
|
0
|
8
|
|
March
|
4
|
0
|
2
|
0
|
6
|
|
Quarter 2
|
April
|
1
|
0
|
4
|
0
|
5
|
|
May
|
3
|
0
|
2
|
0
|
5
|
|
June
|
6
|
0
|
8
|
0
|
14
|
|
Quarter 3
|
July
|
5
|
0
|
3
|
0
|
8
|
|
August
|
3
|
0
|
3
|
0
|
6
|
|
September
|
3
|
0
|
3
|
0
|
6
|
|
Quarter 4
|
October
|
1
|
0
|
7
|
0
|
8
|
|
November
|
2
|
0
|
2
|
0
|
4
|
|
December
|
1
|
0
|
2
|
0
|
3
|
|
Year 2022
|
Quarter 1
|
January
|
0
|
0
|
5
|
0
|
5
|
|
February
|
1
|
0
|
5
|
0
|
6
|
|
March
|
3
|
0
|
3
|
0
|
6
|
|
Quarter 2
|
April
|
0
|
0
|
2
|
0
|
2
|
|
May
|
6
|
0
|
1
|
0
|
7
|
|
June
|
3
|
0
|
7
|
0
|
10
|
|
Quarter 3
|
July
|
2
|
0
|
3
|
0
|
5
|
|
August
|
1
|
0
|
1
|
0
|
2
|
|
September
|
0
|
0
|
1
|
0
|
1
|
|
Quarter 4
|
October
|
1
|
0
|
0
|
0
|
1
|
|
November
|
8
|
0
|
1
|
0
|
9
|
|
December
|
8
|
0
|
4
|
0
|
12
|
|
Year 2023
|
Quarter 1
|
January
|
4
|
0
|
7
|
0
|
11
|
|
February
|
3
|
0
|
1
|
0
|
4
|
|
March
|
1
|
0
|
2
|
0
|
3
|
|
Quarter 2
|
April
|
0
|
0
|
2
|
0
|
2
|
|
May
|
4
|
0
|
0
|
0
|
4
|
|
June
|
2
|
0
|
4
|
0
|
6
|
|
Quarter 3
|
July
|
1
|
0
|
0
|
0
|
1
|
|
August
|
2
|
0
|
5
|
0
|
7
|
|
September
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 4
|
October
|
1
|
0
|
3
|
0
|
4
|
|
November
|
3
|
0
|
7
|
0
|
10
|
|
December
|
0
|
0
|
0
|
0
|
0
|
|
Year 2024
|
Quarter 1
|
January
|
1
|
0
|
2
|
0
|
3
|
|
February
|
0
|
0
|
1
|
0
|
1
|
|
March
|
2
|
0
|
6
|
0
|
8
|
|
Quarter 2
|
April
|
10
|
0
|
8
|
0
|
18
|
|
May
|
1
|
0
|
2
|
0
|
3
|
|
Total
|
168
|
0
|
166
|
0
|
334
|
