Abstract: A virtual conferencing system is described for implementing a speaker queue.

Abstract: A scalable virtual conferencing system which implements a hub and spoke architecture. For example, one embodiment of a scalable virtual conferencing system comprises: a participant management module to logically group each participant in the virtual conferencing system into a hub or one of a plurality of spokes; and a data flow management module to control communication of information between participants in the spokes and participants in the hub, the data flow management module to limit intercommunication from the spokes to the hub in accordance with the manual user input and/or participant management policy; wherein at least one participant in a first spoke is designated as a spoke leader for the first spoke, the spoke leader logically grouped into both the hub and the first spoke, the data flow management module to allow information generated within the first spoke to be propagated into the hub based on input from the spoke leader.

Abstract: A virtual conferencing system is described for implementing a speaker queue.

Abstract: A virtual conferencing system is described for implementing a speaker queue.

Abstract: A virtual conferencing system is described for implementing a speaker queue.

Abstract: A virtual conferencing system is described for implementing a speaker queue.

Abstract: A virtual conferencing system is described for implementing a speaker queue.

Abstract: A system and method of determining diminishment in brain function in relation to at least one of specific adverse factors and specific tasks. The system involves establishing threshold levels for at least one brain function that is either affected by specific adverse factors or is used to perform specific tasks, or both. A test-taker is given a battery of tests from a portable testing unit, where the tests have been tailored to measure specific cognitive functions that can be affected by adverse factors, cognitive functions that are required to perform specific tasks, or both. Scores from the tests are compared to the threshold levels required to perform a task, and a determination is made concerning the capability of the individual to handle the task(s) in question. The portable testing unit may be connected to equipment whose use is denied for test results that fall below a normative level for the activity.