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Accropode (1981) The Accropode is a single-layer artificial armour unit developed by Sogreah in 1981. Accropode concrete armour units are applied in a single layer. Ecopode (1996) The Ecopode armour unit with a rock-like appearance was developed by Sogreah to enhance the natural appearance of concrete armourings above low water level.
Tetrapods on Graciosa Island, Azores Tetrapods in Latvia Tetrapods protecting a marina on Crete, Greece.. A tetrapod is a form of wave-dissipating concrete block used to prevent erosion caused by weather and longshore drift, primarily to enforce coastal structures such as seawalls and breakwaters.
The unit of analysis should also not be confused with the unit of observation.The unit of observation is a subset of the unit of analysis. [citation needed] A study may have a differing unit of observation and unit of analysis: for example, in community research, the research design may collect data at the individual level of observation but the level of analysis might be at the neighborhood ...
Curriculum studies was created in 1930 and known as the first subdivision of the American Educational Research Association.It was originally created to be able to manage "the transition of the American secondary school from an elite preparatory school to a mass terminal secondary school" until the 1950s when "a preparation for college" became a larger concern. [4]
Examples are engineered log jams, or ELJs, that may aid in efforts to save stocks of salmon. The sheer mass of the dolosse provides ballast for logs and slash ("wrack" or "rack" organic debris) to create a stable, complex habitat structure, all the while precluding the need for excessive, environmentally-invasive and costly excavation for their ...
An embedded case study is a case study containing more than one sub-unit of analysis (Yin, 2003). Similar to a case study, an embedded case study methodology provides a means of integrating quantitative and qualitative methods into a single research study (Scholz & Tietje, 2002; Yin 2003). However, the identification of sub-units allows for a ...
Independent study is a form of education offered by many high schools, colleges, and other educational institutions. [1] It is sometimes referred to as directed study , and is an educational activity undertaken by an individual with little to no supervision. [ 2 ]
An interdisciplinary unit on rivers is appropriate for elementary or middle school Language Arts, Science and Social Studies. The local river system would be the unifying idea, but the English teacher would link it to Language Arts by studying river vocabulary and teaching students how to do a research report.