Understanding Research Study Designs. Help. In order to find the best possible evidence, it helps to understand the basic designs of research studies. The following basic definitions and examples of clinical research designs follow the âlevels of evidence.â.
The National Mall is a national park in downtown Washington, D.C. , the capital of the United States.The National Park Service (NPS) administers the National Mall, which is part of its National Mall and Memorial Parks unit.he National Mall occupies the site of this planned grand avenue, which was never constructed. The Washington Monument stands near the planned site of its namesake's equestrian statue. Mathew Carey 's 1802 map is reported to be the first to name the area west of the United States Capitol as the Mall.
What Bert Has To Say About Washington-Arlington-Alexandria Metro Area. It would be an understatement to say that the nationâs capital is a unique place. The centrally located National Mall is an urban planning gem, with excellent open spaces, walking paths, and major monuments in a classic architectural style. Lining the mall is the Smithsonian museum complex, probably the best set of museums in the world in a single location. In reality, the whole mall setup is a museum in and of itself and a major destination for locals and visitors alike. Numerous government offices and first class hospitality venues surround the mall.