What is the meaning of "ef" in photography or videography?

This Appendix does not have the force and effect of law and is not meant to bind the public. The document is intended only to provide clarity to the public ... ... EF-1α reference tree for operational and informational genes. Fig. 3 shows that the mean distance of operational trees (2.3 steps) is significantly greater ... ERIC is an online library of education research and information, sponsored by the Institute of Education Sciences (IES) of the U.S. Department of Education. Apr 24, 2015 ... ... mean that people find and understand such information. eHealth literacy, the ability to seek, find, understand, and act on health information ... The .gov means it's official. Federal government websites often ... Education (ED) and Health and Human Services (HHS), collaborated to provide information ... The distribution of peripheral branch–transfer distances of operational and informational trees from the EF-1α reference tree. The mean distance of ... What is Duchenne muscular dystrophy (DMD)? · What are the symptoms of DMD? · What causes DMD? · What are DMD “carriers”? · What is the life expectancy in DMD? · What ... Aug 24, 2010 ... help the commander tailor the command and control organization and are central to ef- ... An informational perspective and skill that foster an ... Jan 31, 2023 ... According to Department of Defense (DOD) Joint Publication (JP) 1, the instruments of national power are diplomatic, informational, military, ... May 9, 2023 ... FEMA uses the most accurate flood hazard information available ... The issuance of a LOMA or LOMR-F does not mean the structure or lot ...