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ประคัลภ์ ปัณฑพลังกูร · 28 เม.ย. 2554
ประคัลภ์ ปัณฑพลังกูร · 28 เม.ย. 2554
แก้ว..อุบล จ๋วงพานิช · 28 เม.ย. 2554
รัชดาวัลย์ วงษ์ชื่น(อิงจันทร์) · 28 เม.ย. 2554
ยายธี · 28 เม.ย. 2554
ยาวหน่อย ขออภัย ที่รบกวนเวลา ท่านผู้อ่าน ที่เข้าใจแล้ว แต่สำหรับ ผู้ ที่ไม่รู้ น่าจะอ่านแล้วเพลิน นะครูอ้อย
There are more behind the scene than what we can see.
Basically, communication is a network of receivers, receiver softwares, receiver hardwares, transmission systems (transmission networks of transmission nodes, transmission channels/copper and optic cables/radio frequencies/...), transmitter hardwares, transmitter softwares, transmission data volumes. (plurals of software and hardware, etc are used to say 'different types or kinds of software, hardware and so on.) The best description is perhaps "dynamic, heterogenic multi-agent network". The slowness of Internet access may be due to a number of factors: speed of reciever computer (eg. celeron or dual core cpu; IDE or SATA HD, RAM speed) and software set used (eg. Windows or Linux; IE or Firefox), the transmission speed (eg. landlines, cables, optic fibres, wireless broadbands, satellite), traffic on the network (just like traffic on the road systems - the heavier, the slower), the page sizes (pages with hi-resolution photos will take longer to transmit, longer to decode and to display; plain text pages take milliseconds to display as a rule), the level of filtering by authorities (eg. capturing of politically sensitive data, malware and viruses), ...
Thailand have seen a 'boom' in Internet users and needs to upgrade the Internet infrastructure (transmission systems) for both the volume and the speed. A lot of the so-called '21st century' skills cannot be developed with the present systems. The defence capacity of Thailand depends on faster communication. New commercial enterprise development, food production technologies, education, health and care for older people all depend on better transmission infrastructure.
Yes, do learn to optimise your use of the Net. But the big picture is that we need better transmission system!
ขอบคุณค่ะ ท่าน SR ท่านรอบรู้ จริงๆๆค่ะ ครูอ้อย คารวะ ค่ะ
ขอบพระคุณอีกครั้งค่ะ
เช้านี้ ก็ทำแบบ ที่เขียน เน็ตไปเร็วมาก ไม่หลุดด้วยค่ะ
I am sorry I did not make myself clear to you.
I should have let you know that the Internet connection 'widget' that you showed and talked about displays 3 data items:
1) modem speed eg. 115.2 kbps (kilo bits per second) this data often shows the 'maximum' speed of the modem -- not the actual speed of transmission. At 115.2 kbps, about 14 kilobytes is received in 1 second (1 byte = 8 bits; 1 bit = 1 on/off signal). Upload (sending) speed is usually much slower.
2) (accumulated) amount of data sent (in bytes) from the start of the connection: this amount goes up as time goes on.
3) (accumulated) amount of data received (in bytes) from the start of the connection: this amount goes up with time.
Actual speed of connection is very much a perceptual concept, the speed of connection varies with time and so many external factors (as explained before). Average speeds can be calculated by dividing amount of data sent/received in a session by the duration of the session.
A lot of work is being done at web site servers to increase capacity (amount of data: eg. videos and pictures) and speed (eg. more RAM and faster RAM).
[To gotoknow.org web admins: 'stackless' technology -- using very thin virtual threads for client connections has been successful in serving 100,000+ concurrent clients (see 'stackless.com and MUD game developers); but the database bottleneck has not been much improved; caches help with more static pages; ;-) ]
Back to the subject at hand: avoiding Internet peak hours (traffic jams) is a good strategy. But sleep is very important to life -- much important than reading Internet blogs. I kid you not ;-)
I am sorry I did not make myself clear to you.
I should have let you know that the Internet connection 'widget' that you showed and talked about displays 3 data items:
1) modem speed eg. 115.2 kbps (kilo bits per second) this data often shows the 'maximum' speed of the modem -- not the actual speed of transmission. At 115.2 kbps, about 14 kilobytes is received in 1 second (1 byte = 8 bits; 1 bit = 1 on/off signal). Upload (sending) speed is usually much slower.
2) (accumulated) amount of data sent (in bytes) from the start of the connection: this amount goes up as time goes on.
3) (accumulated) amount of data received (in bytes) from the start of the connection: this amount goes up with time.
Actual speed of connection is very much a perceptual concept, the speed of connection varies with time and so many external factors (as explained before). Average speeds can be calculated by dividing amount of data sent/received in a session by the duration of the session.
A lot of work is being done at web site servers to increase capacity (amount of data: eg. videos and pictures) and speed (eg. more RAM and faster RAM).
[To gotoknow.org web admins: 'stackless' technology -- using very thin virtual threads for client connections has been successful in serving 100,000+ concurrent clients (see 'stackless.com and MUD game developers); but the database bottleneck has not been much improved; caches help with more static pages; ;-) ]
Back to the subject at hand: avoiding Internet peak hours (traffic jams) is a good strategy. But sleep is very important to life -- much more important than reading Internet blogs. I kid you not ;-)
ขอบคุณ คุณ SR มากๆๆค่ะ นับถือ จริงๆๆค่ะ
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