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PRISM is a code name for a program under which the United States National Security Agency (NSA) collects internet communications from various U.S. internet companies. [1] [2] [3] The program is also known by the SIGAD US-984XN. [4] [5] PRISM collects stored internet communications based on demands made to internet companies such as Google LLC ...
Hans-Joachim Haase (optician) Hans-Joachim Haase (1915 – December 20, 2001) was a German clockmaker, optician and inventor, who became known for an apparatus for testing binocular vision and for the MKH method, an alternative method intended to improve binocular vision using corrective lenses. This method, which is controversial, has mainly ...
Distraction osteogenesis ( DO ), also called callus distraction, callotasis and osteodistraction, is a process used in orthopedic surgery, podiatric surgery, and oral and maxillofacial surgery to repair skeletal deformities and in reconstructive surgery. [1] [2] The procedure involves cutting and slowly separating bone, allowing the bone ...
ECMs are a theoretically-driven approach useful for estimating both short-term and long-term effects of one time series on another. The term error-correction relates to the fact that last-period's deviation from a long-run equilibrium, the error, influences its short-run dynamics. Thus ECMs directly estimate the speed at which a dependent ...
An alternative correction that is believed to be less conservative is the Huynh–Feldt correction (1976). As a general rule of thumb, the Greenhouse–Geisser correction is the preferred correction method when the epsilon estimate is below 0.75. Otherwise, the Huynh–Feldt correction is preferred. See also. Mauchly's sphericity test
A vomer flap is a type of palatoplasty surgery that uses the mucoperiosteal tissue of the vomer to cover a unilateral or bilateral cleft palate. This procedure can be used to reconstruct the nasal or oral surfaces by either raising the vomer or creating a flap. Surgical procedures can be combined according to type of clefting in order to ensure ...
The Massachusetts Correctional Institution—Cedar Junction (MCI-Cedar Junction), formerly known as MCI-Walpole, is a maximum security prison under the jurisdiction of the Massachusetts Department of Correction. It was opened in 1956 to replace Charlestown State Prison, the oldest prison in the nation at that time.
Corrective lens. A pair of contact lenses, positioned with the concave side facing upward. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia.