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D2L (or Desire2Learn) is a Canada-based global software company with offices in Australia, Brazil, Europe, India, Singapore, and the United States.. D2L is the developer of the Brightspace learning management system, a cloud-based software suite used by schools, higher educational institutions, and businesses for online and blended classroom learning.
DVB-S2 is designed for broadcast services including standard and HDTV, interactive services including Internet access, and (professional) data content distribution. The development of DVB-S2 coincided with the introduction of HDTV and H.264 (MPEG-4 AVC) video codecs. Two new key features that were added compared to the DVB-S standard are:
A split S2 is a finding upon auscultation of the S2 heart sound. [1] It is caused when the closure of the aortic valve (A 2) and the closure of the pulmonary valve (P 2) are not synchronized during inspiration. The second heart sound (S2) is caused by the closure of the aortic and pulmonic valves, which causes vibration of the valve leaflets ...