1 This is also why blacks and Asians have fewer facial wrinkles than whites. 2  Black skin has more casual lipids and more moisture in the stratum corneum than white skin. 3  Black skin sheds its outer layers more (increased desquamation) than white skin.  Black skin has 50% lower ceramides than white or Hispanic skin.
Definition - What does Software Development Life Cycle (SDLC) mean? The software development life cycle (SDLC) is a framework defining tasks performed at each step in the software development process. SDLC is a structure followed by a development team within the software organization. It consists of a detailed plan describing how to develop, maintain and replace specific software.
High-Level Data Link Control (HDLC) is a bit-oriented code-transparent synchronous data link layer protocol developed by the International Organization for Standardization (ISO). The original ISO standards for HDLC are: 1  ISO 3309 â Frame Structure.