My comment on some techonology lecture

On Sundy 3/7/2011

lecture tile: instruction software evaluation

المحاضره ممتعه

On Mondy @ tuesday 4/7/2011

lecture tile: introducation of computer

المحاضره تذكير للمعلوماتنا السابقه..جزاك الله الف خير 

On Wednesday 6.7.2011

lecture tile: intent for tecing learning and research

المحاضره ممتعه لكن طويله

On sunday 10/7/2011

lecture tile: computer security

كانت المعلومات قيمه...يعطيك العافية



Communication Process

Communication process

• Communication is the process of creating and exchanging meaning through symbolic interaction. As a process communication constantly moves and changes.  It does not stand still. The meaning of communication involves thoughts, ideas, and understandings shared by communicators.

• There are three process of communication:
  -Context :  Provides the people ,the occasion and the task. 
• -Physical environment is the actual place or space where communication occurs.
• -Climate influences the emotional atmosphere.
  
  
  Purpose of Communication:
• n  Sharing our ideas, thought.
• n  Making ourseleves understood.   
• n  Reaching decision.
• n  Engaging in discussion.
  There are two types of communication process:
  
  
  o   Verbal communication:  oral, writen, electornic, vido
  o   Nonverbal communication:  eye movements, gestures, facial expressions
  –       Add much of the feeling and emotion that sender want to give amessage.
• often has more effect than verbal on the meaning receivers give amassge.
  Verbal communication

• o   Oral communication-All forms of speech between a sender and receiver 
  -Leaves no permanent, retrievable record of the message and response unless recorded
  -More effective than written when trying to affect receiver's opinion on some matter
  -Nonverbal communication can affect the final interpretation of the message
  
  
  o   Written communication
  -Any form of handwriting, printed memo, or report
  -Includes messages sent over an electronic medium
  -Receiver's response is more delayed in written than in oral communication
  -Receiver must first read the message before interpreting and responding to it
  -Advantages over oral communication
  ·        Retrieveable
• ·        Almost permanent
• ·        Comperhension is better
  o   Electronic or video communication
  -Electronic and video communication becoming more important
  -E-mail, computer networks, fax machines, computer conferencing, videoconferencing
  -All now available as desktop systems

• ·      Nonverbal communication :
  
  
  -Combine verbal and nonverbal communication
  -Create unique communication style, often unknowingly
  -Can contradict, amplify, or complement verbal communication
  Nonverbal communication
  ·        Physical aspects of personVoice:  speed, fluency, references to self
  -Facial expressions:  smile, frown
  -Gestures:  hand movements
  -Body movements:  distance
  -Posture:  leaning forward
  
  
  ·        Time-Orientation to and meaning of time
  -North America:  punctual
  -Latin America:  less punctual
  -Swiss:  precisely punctual
  -Arab cultures:  last person to arrive is the most important
  ·        Communication with signs and signals
  -Turn signals on motor vehicles, traffic control signals, caution flags of highway workers
  -Hand signals for guiding aircraft
  -Special situation:  landing on an aircraft carrier
  

Computer Network

Network

 

•    Network is a group of two ormor computer linked to gathers.  

 There are many types of network, including:

• Local-Area Networks (LANs) : The computers are geographically close together (that is, in the same building).
•     Wide-Area Networks (WANs) : The computers are farther apart and are connected by telephone lines or radio waves.
• Campus-Area Networks (CANs): The computers are within a limited geographic area, such as a campus or military base.
• Metropolitan-Area Networks (MANs): A data network designed for a town or city.
•  Home-Area Networks (HANs): A network contained within a users home that connects a persons digital device.
•   Network Topology : The geometric arrangement of a computer system. Common topologies include a Bus, Star, and Ring.

•  Bus :In local area networks where bus topology is used, each node is connected to a single cable. Each computer or server is connected to the single bus cable.

• Star : In local area networks with a star topology, each network host is connected to a central hub with a point-to-point connection. All traffic that traverses the network passes through the central hub.

http://www.youtube.com/watch?v=GyTLPl5t-0Q&feature=autoplay&list=PLDA02515CDCDF3C8E&index=23&playnext=2