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Consumer Reports is a United States-based non-profit organization which conducts product testing and product research to collect information to share with consumers so that they can make more informed purchase decisions in any marketplace.
[5] The method also uses the coronary artery calcium score (CAC), [5] a measurement of the amount of calcium in the walls of the arteries that supply the heart muscle, using a coronary CT calcium scan of the heart. [6] [7] CAC has been shown to be an independent marker of risk for cardiac events, cardiac mortality, and all-cause mortality. [8]
Time deviation (TDEV), [1] also known as (), is the time stability of phase x versus observation interval τ of the measured clock source. The time deviation thus forms a standard deviation type of measurement to indicate the time instability of the signal source.
The TDEV is normalized so that it is equal to the classical deviation for white PM for time constant τ = τ 0. To understand the normalization scale factor between the statistical measures, the following is the relevant statistical rule: For independent random variables X and Y , the variance (σ z 2 ) of a sum or difference ( z = x − y ) is ...
A customer review is an evaluation of a product or service made by someone who has purchased and used, or had experience with, a product or service. Customer reviews are a form of customer feedback on electronic commerce and online shopping sites.
Consumer Reports (CR), formerly Consumers Union (CU), is an American nonprofit consumer organization dedicated to independent product testing, investigative journalism, consumer-oriented research, public education, and consumer advocacy.
Smartphones unlocking at a glance. Palm payments for in-store shopping. Eye scans to pass through airport security. What were once sci-fi fantasies are now a reality.
International Consumer Research & Testing (ICRT) is a global consortium of more than 40 consumer organisations dedicated to carrying out joint research and testing in the consumer interest. ICRT's principal objectives are to facilitate co-operation between its members and to promote research and testing in the field of consumer goods and services .