1 Rotation around the front-to-back axis is called roll. 2  Rotation around the side-to-side axis is called pitch. 3  Rotation around the vertical axis is called yaw.  The Ailerons Control Roll. On the outer rear edge of each wing, the two ailerons move in opposite directions, up and down, decreasing lift on one wing while increasing it on the other.
A System call is a mechanism used by an application for requesting a service from the operating system. Examples of the services provided by the operating system are allocation and deallocation of memory, reporting of current date and time etc.
The sender and receiver are using the communication device at the same time, enabling an immediate âconversationalâ response to be given, as if they were in the same room at the same time. A telephone call is an example of synchronous communication system. Learn more in: Towards a Dimensional Model of the Stages of Online Learning. 5. Communication occurs when learners communicate in real time, either in a face-to-face situation, on the telephone or using the Internet.