Search results
Results From The WOW.Com Content Network
Research and development ( R&D or R+D; also known in Europe as research and technological development or RTD) [1] is the set of innovative activities undertaken by corporations or governments in developing new services or products, and improving existing ones. [2] [3] Research and development constitutes the first stage of development of a ...
The N-methyl-D-aspartate receptor (also known as the NMDA receptor or NMDAR ), is a glutamate receptor and predominantly Ca 2+ ion channel found in neurons. [3] [4] The NMDA receptor is one of three types of ionotropic glutamate receptors, the other two being AMPA and kainate receptors.
Rhythm and blues, frequently abbreviated as R&B or R'n'B, is an African-American genre of popular music that originated within African-American communities in the 1940s. The term was originally used by record companies to describe recordings marketed predominantly to African Americans, at a time when "rocking, jazz based music ...
Generally abbreviated to "P.R.N." or "PRN", pro re nata refers to the administration of prescribed medication whose timing is left to the patient (in the case of patient-controlled analgesia ), nurse, or caregiver, as opposed to medication that is taken according to a fixed (primarily daily) schedule (a.k.a. "scheduled dosage").
t. e. Ribonucleic acid ( RNA) is a polymeric molecule that is essential for most biological functions, either by performing the function itself ( non-coding RNA) or by forming a template for the production of proteins ( messenger RNA ). RNA and deoxyribonucleic acid (DNA) are nucleic acids. The nucleic acids constitute one of the four major ...
A point in three-dimensional Euclidean space can be located by three coordinates. Euclidean space is the fundamental space of geometry, intended to represent physical space. Originally, in Euclid's Elements, it was the three-dimensional space of Euclidean geometry, but in modern mathematics there are Euclidean spaces of any positive integer ...
R&D management can be defined as where the tasks of innovation management (i.e., creating and commercializing inventions) meet the tasks of technology management (i.e., external and internal creation and retention of technological know-how). [3] It covers activities such as basic research, fundamental research, technology development, advanced ...
The sum of squares of residuals, also called the residual sum of squares: The total sum of squares (proportional to the variance of the data): The most general definition of the coefficient of determination is. In the best case, the modeled values exactly match the observed values, which results in and R2 = 1.