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Evgenii Posted 16 years ago
Science & IT
Mechanism
Hello, friends.
For a long time I have been searching for the meaning of the word mechanism.
Here are excerpts from the article, because I think, that both senses are the same.
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First excerpt
Like many other older Internet protocols, POP originally supported only an unencrypted login
mechanism.
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Second excerpt
(I don't know, wheter this part is required for understanding context, so I put it also)
Clients with a leave mail on server option generally use the POP3 UIDL (Unique IDentification Listing) command. Most POP3 commands identify specific messages by their ordinal number on the mail server. This creates a problem for a client intending to leave messages on the server, since these message numbers may change from one connection to the server to another. For example if a mailbox contained five messages, and a different client then deletes message #3, the next connecting user will find the last two messages' numbers decremented by one.)
(I don't know, wheter this part is required for understanding context, so I put it also)
UIDL provides a mechanism to avoid these numbering issues by assigning a string of characters as a permanent and unique ID for the message. When a POP3-compatible e-mail client connects to the server, it can use the UIDL command to get the current mapping from these message IDs to the ordinal message numbers. The client can then use this mapping to determine which messages it has yet to download. IMAP uses a 32-bit unique identifier (UID) that is assigned to messages in ascending (although not necessarily consecutive) order as they are received. When retrieving new messages, an IMAP client requests the UIDs greater than the highest UID among all previously-retrieved messages, whereas a POP client must fetch the entire UIDL map. For large mailboxes, this can require significant processing.
I've found such an entry in Collins Dictionary:
In a machine or piece of equipment, a mechanism is a part, often consisting of a set of smaller parts, which performs a particular function.
Also I've found synonym of procedure.
I am suggesting that mechanism means software implementation of some funcition, but to be honest at the moment I am confused.
Could you help me please. )
Thank you.
For a long time I have been searching for the meaning of the word mechanism.
Here are excerpts from the article, because I think, that both senses are the same.
------------------------------------------------------------------------------------
First excerpt
Like many other older Internet protocols, POP originally supported only an unencrypted login
mechanism.
------------------------------------------------------------------------------------
Second excerpt
(I don't know, wheter this part is required for understanding context, so I put it also)
Clients with a leave mail on server option generally use the POP3 UIDL (Unique IDentification Listing) command. Most POP3 commands identify specific messages by their ordinal number on the mail server. This creates a problem for a client intending to leave messages on the server, since these message numbers may change from one connection to the server to another. For example if a mailbox contained five messages, and a different client then deletes message #3, the next connecting user will find the last two messages' numbers decremented by one.)
(I don't know, wheter this part is required for understanding context, so I put it also)
UIDL provides a mechanism to avoid these numbering issues by assigning a string of characters as a permanent and unique ID for the message. When a POP3-compatible e-mail client connects to the server, it can use the UIDL command to get the current mapping from these message IDs to the ordinal message numbers. The client can then use this mapping to determine which messages it has yet to download. IMAP uses a 32-bit unique identifier (UID) that is assigned to messages in ascending (although not necessarily consecutive) order as they are received. When retrieving new messages, an IMAP client requests the UIDs greater than the highest UID among all previously-retrieved messages, whereas a POP client must fetch the entire UIDL map. For large mailboxes, this can require significant processing.
I've found such an entry in Collins Dictionary:
In a machine or piece of equipment, a mechanism is a part, often consisting of a set of smaller parts, which performs a particular function.
Also I've found synonym of procedure.
I am suggesting that mechanism means software implementation of some funcition, but to be honest at the moment I am confused.
Could you help me please. )
Thank you.
Top answer
A mechanism is a machine, and a machine is a tool. (A simple lever is both a machine and a tool. ) Of course you may say that there are mechanisms within mechanisms.
- A mechanism is a machine, and a machine is a tool.
- (A simple lever is both a machine and a tool.
- ) Of course you may say that there are mechanisms within mechanisms.
- The important thing is that a mechanism is something which helps us get a job done correctly.
- It may be a mechanical device, or a scientific principle, or a procedure, or a protocol.
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2 Answers
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A mechanism is a machine, and a machine is a tool. (A simple lever is both a machine and a tool. It's also a mechanism.) Of course you may say that there are mechanisms within mechanisms.
The important thing is that a mechanism is something which helps us get a job done correctly. It may be a mechanical device, or a scientific principle, or a procedure, or a protocol. Darwin's concep
The important thing is that a mechanism is something which helps us get a job done correctly. It may be a mechanical device, or a scientific principle, or a procedure, or a protocol. Darwin's concep
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Thank you, Avangi.
This exhaustive answer will stop me from further searching the web. )
This exhaustive answer will stop me from further searching the web. )
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