This PowerPoint presentation describes the terms and principles of quality assurance (QA) and quality control (QC) for environmental analysis. The presentation is easy to understand and QA explanations are concise.
This Power Point presentation provides an introduction to IMS architecture in the context of a course on Voice over IP. The material describes IMS as an open systems architecture that supports a range of IP-based...
Since its launch in 1990, the Hubble Space Telescope has provided scientists with a vast amount of quality data and has contributed to a number of important discoveries. The Hubble Deep Field Image, one of its best...
This resource presents a set of units on the Earth's crust, surface processes, landforms, and history. Also included is a unit on meteorology, climate, and the Earth in Space.
Coastlines are places of continuous, often dramatic geological activity. They change daily and seasonally, but especially over long time periods. This interactive feature discusses the forces that help shape coastal...
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