To suspend the execution of a command for a specific amount of time use the command: sleep time_in_seconds ; command . The second command will not be carried out until the amount of time specified as an argument to the sleep command has elapsed. ... You can also enclose the commands in parentheses to group them together and then run the combined command in the background, allowing you to carry on working at the shell prompt: (sleep time_in_seconds ; command ) . ...
... GCR and SCR are primary cosmic rays. 10-15 years after the discovery of cosmic radiation (1919) there emerged two main avenues of investigation in the physics of cosmic rays (CR): 1) nuclear - elucidation of the origin of elementary particles and nuclear interactions; and 2) astrophysical (space physics) - solution of the problem related to the origin and variations (changes in intensity) of CR. ... Besides, the CR flux in interplanetary space is, strictly speaking, not isotropic. ...
MATSYM - symbolic matrix processor . ... To use the program you will need a MAT file (liked CIR file: "User manual for CIRSYM program") of your system. ... In first string of MAT file enter any text you want to be the title of your system. ... Starting from string 2 (if is not comments - "*") enter the system element name, incident row and column and, optionally, its value. ... To generate a solution, run MATSYM.exe and enter "system_file_name.CIR" or click on the "ENTER" (in "MAT" case). ...
... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...
... Войти на сайт: Имя: . ... Автор забыл указать имя ] . ... В воскресенье агентство НАСА осуществило успешный запуск ракетоносителя Pegasus, который вывел на орбиту маленький зонд IBEX (Interstellar Boundary Explorer) размером с автобусную покрышку и стоимостью $165 млн. Теперь аппарат на собственном двигателе отлетит от Земли на 320 тыс. км, и через 45 дней начнет там свою двухлетнюю службу, изучая границы гелиосферы ? ... Имя: . ...