In accordance with a specific embodiment of the present invention, an image is projected upon a surface. The apparatus is used primarily to stimulate upper body movement and to exercise and tone arm, chest, hand, and other muscles that are frequently not used enough when a person has to remain in a sitting position for long periods of time in a wheelchair or regular chair. A bypass air passage bypassing the heating heat-exchanger is substantially linearly aligned with the vent outlet via the ascending air passage. The UE may send information to the Node B using the allocated resources.