Abstract: A method and system for managing delivery of a content stream to a plurality of devices participating in an online conference session, including delivering, to each of the devices, the content stream associated with the online conference session at a first signal quality, receiving an indication signal indicating that a first device is to broadcast the content stream, responsive to the indication signal, increasing a signal quality of the content stream delivered to the first device from the first signal quality to a second signal quality, wherein the second signal quality is higher than the first signal quality, delivering the content stream to the first device at the second signal quality, and delivering the content stream to the rest of the devices at the first signal quality or a third signal quality, wherein the third signal quality is lower than the first signal quality.

Abstract: A method of simultaneously measuring thermal conductivity and heat capacity of a fluid, using a heat conduction calorimeter having a reference fluid in a first cell and a sample fluid in a second cell includes the steps of calibrating the calorimeter using a standard fluid having known thermal conductivity and heat capacity over a range of temperatures and the reference fluid to determine a set of sensitivity parameters, {a.sub.n.sup.ij }, of the calorimeter, wherein the a.sub.n.sup.ij are functions of the calorimeter, temperature and the reference fluid; applying a square wave heat pulse to the calorimeter containing said sample fluid and said reference fluid; measuring the thermal response curve to the square wave heat pulse, wherein the thermal response curve is a function of time, temperature of the measurement, thermal properties of the sample fluid, and thermal properties of the reference fluid; reducing the response curve to a set of discrete characteristic parameters, {p.sub.