A user's client provides presence information (presence state) via a network connection to a presence service , which is stored in what constitutes their personal availability record (called a presentity ) and can be made available for distribution to other users (called watchers ) to convey their availability for

TOCTOU race conditions are common in Unix between operations on the file system , [ 1 ] but can occur in other contexts, including local sockets and improper use of database transactions

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While the content is being played back by an MPEG-DASH client, the client uses a bit rate adaptation (ABR) algorithm [ 2 ] to automatically select the segment with the highest bit rate possible that can be downloaded in time for playback without causing stalls or re-buffering events in the playback

In the mail client example, the framework could follow both the keyboard and mouse inputs and call the command invoked by the user by either means and at the same time monitor the network interface to find out if new messages arrive and refresh the screen when some network activity is detected

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Physical access control can be achieved by a human (a guard, bouncer, or receptionist), through mechanical means such as locks and keys, or through technological means such as access control systems like the mantrap

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You can help by converting this article , if appropriate

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1 200 OK Date: Thu, 02 Jul 2026 17:06:44 GMT Content-Type: text/html; charset=utf-8 Vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Sec-Fetch-Site,Accept-Encoding, Accept, X-Requested-With ETag: W/"47aa9c1d17c88f3a190a8326a978c3c3" Cache-Control: max-age=0, private, must-revalidate Strict

com; frame-ancestors 'self'; child-src 'self' blob: tube

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By default, iCalendar uses the UTF-8 character set ; a different character set can be specified using the "charset" MIME parameter (if the transport method used supports MIME, such as Email or HTTP )

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1 200 OK Date: Thu, 02 Jul 2026 16:54:10 GMT Content-Type: text/html; charset=utf-8 Vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Sec-Fetch-Site,Accept-Encoding, Accept, X-Requested-With ETag: W/"554c4addd0da505c1c2f60255b83a6e8" Cache-Control: max-age=0, private, must-revalidate Strict

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For example: if software processes loan applications, it might have classes like "loan application", "customers", and methods such as "accept offer" and "withdraw

If you know the name of a process you can send it a message

Unlike v1, cgroup v2 has only a single process hierarchy (because a controller can only be assigned to one hierarchy, processes in separate hierarchies cannot be managed by the same controller; this change sidesteps the issue)

Elevator control software can be model-checked to verify both safety properties, like "The cabin never moves with its door open" , [ 1 ] and liveness properties, like "Whenever the n th floor's call button is pressed, the cabin will eventually stop at the n th floor and open the door

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Some operating systems only allow new tasks to be added if it is sure all real-time deadlines can still be met

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