Efficacy

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Efficacy

In lighting design, a measure of the luminous efficiency of a specified light source, expressed in lumens per watt. For daylighting, this is the quotient of visible light incident on a surface to the total light energy on that surface. For electric sources, this is the quotient of the total luminous flux emitted by the total lamp power input.

luminous efficacy

The ratio of the total emitted luminous flux, in lumens, to the total electric power consumption in watts.
References in periodicals archive ?
It describes "full support" as everything that was warranted and efficacious given the general conditions.
Likewise, efficacious teachers looked forward to being active members of the school community (Woolfolk & Hoy, 1990), and efficacious teachers better serve their students in need of special education (DeForest & Hughes, 1992; Meijer & Foster, 1988; Podell & Soodak, 1993).
Comments from the counselor educators (N = 8) who identified a field-based setting as most efficacious for school counselor preparation included: "I think students will be more effective overall having a closely supervised practicum.
Sharp's strategy of focusing on ''lucrative products in which it can maintain dominant market shares, such as high-value-added LCDs, CCD/CMOS imaging devices, solar cells and semiconductor lasers'' has proved efficacious, it noted.
CIRMS provides a forum for discussing common ionizing radiation issues; identifying, defining and prioritizing needed work; disseminating information on standards; and organizing workshops and meetings to advance safe and efficacious uses of ionizing radiation technology.
Already used for 10 years by more than 5,000 otolaryngologists, hospitals, and clinics, the Breathe with EEZ is nearly invisible, reusable, and more efficacious than any "Band-Aid" fix.
9) Programming is causally relevant, but not causally efficacious, since it does not itself figure in a causal process.
The question thus becomes, what made the "symbolic performances" of Chinese students so remarkably efficacious.
com/research/5qfdf4/there_is_an) has announced the addition of Decision Resources, Inc's new report "There Is an Urgent Need for More Efficacious High-Grade Glioma Treatments, but Will the Current Therapeutic Pipeline Suffice?
Three hypnotic interventions met criteria as a possibly efficacious empirically supported therapy for reducing postsurgical or lumbar puncture pain.
safe, cost-effective, highly efficacious care) against our own self-interest?
The vaccine is clearly efficacious against bacteremia.