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The Laryngoscope, 1976
AbstractBecause of the numerous and varied surgical approaches to ear pathology devised and expanded in the past two decades, we are destined to be confronted with increasingly frequent cases of ossicular defects behind an intact eardrum. Using a technique which is the converse of the established “patch” test a simple office procedure is described ...
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AbstractBecause of the numerous and varied surgical approaches to ear pathology devised and expanded in the past two decades, we are destined to be confronted with increasingly frequent cases of ossicular defects behind an intact eardrum. Using a technique which is the converse of the established “patch” test a simple office procedure is described ...
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Regression-Discontinuity Analysis
2008The regression discontinuity (RD) data design is a quasi-experimental evaluation design first introduced by Thistlethwaite and Campbell (1960) as an alternative approach to evaluating social programmes. The design is characterized by a treatment assignment or selection rule which involves the use of a known cut-off point with respect to a continuous ...
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Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction
Science, 2011Nanfang Yu +2 more
exaly