The answer depends a bit on what you mean by "sources of responsibility".
DoDI 8510.01, paragraph 5.8.5 states that Heads of the DoD Components Appoint DAAs for DoD ISs under their purview so the DAA derives their authority and responsibility from that appointment. Under paragraph 5.9.1, the Chairman of the Joint Cheifs of Staff appoints a PAA for DPD Information systmes governed by the Warfighting Mission Areas (think Joint Capabilities) and 5.10 the Commander of the US STRATCOM appoints DAAs for space systems.
DODD 8500.1 and DoDI 8500.2 are the basic original documents laying out the responsibilities of the DAA with Paragraph 5.15 of DoDI 8510.01 lays out additional responsibilities. All these are driven by the requirements of the Federal Information Security Management Act (FISMA).
The IAO is not the DAA, but is responsible to the DAA.
78 on youtube, but it is the actual number
The User Representative and the DAA are distinct entities. The two roles are not combined. It is possible however for the DAA to delegate much of their responsibility and authority to others who represent them in meetings, collaborations, and review of requests for ATO's. Even if they delegate, they are still ultimately responsible for every ATO, IATO, and DATO that is issued. They can delegate the signing of documents to others but the signatures of such delegated individuals must still be "by direction of" the DAA and if there are problems with a system operating under and ATO, the DAA is still held responsible, in addition to the person they delegated the authority to.
Inyasha, Daa Daa Daa, Yumerio Patissiere, Kodocha and lots more
I only know that it has around 47 chapters. On the website I found the information, I couldn't find the volume count, but maybe I overlooked it. Here's the source: http://www.mangareader.net/1577/daa-daa-daa.html
Try searching it in stores
No - the User Representative cannot also be the DAA.
episode 61 is up as far as i know but im not sure about the rest
Jatt Punjab Daa was created in 1992.
Ludvig Kristensen Daa died in 1877.
Ludvig Kristensen Daa was born in 1809.
Dennis Daa was born on 1979-07-05.