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 ?
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.
due to the company's ability to maintain a solid earnings performance and efficacious business strategy.
Mulder reported that these data suggest Dermagraft is efficacious in enhancing healing of diabetic foot ulcers and that a pivotal trial should be carried out with the most effective dosage regimen.
The vaccine is clearly efficacious against bacteremia.
The report also finds that the highest proportion of surveyed MCO pharmacy directors (40 percent) selected ER tolterodine as the most efficacious therapy for overactive bladder, while only 11 percent of surveyed urologists chose ER tolterodine as the most efficacious.
The parameters or the reviewer actions must be in accordance with the latest standards of efficient and efficacious care.
The FDA confirmed the products to be safe and efficacious.
Meager advancements in prolonging the survival of patients have been made over the last decade, and there is a pressing need for efficacious therapies that are both safe and tolerable.
The question thus becomes, what made the "symbolic performances" of Chinese students so remarkably efficacious.
Parameswaran (1998) found that pre-service teachers who work with children from diverse backgrounds through field trips were found to be more efficacious in the classroom.
In previous years, Enbrel has been viewed as the most efficacious therapy for the treatment of moderate to severe psoriasis.
viruses, medication, lifestyle factors, environmental chemicals) that contribute to the development of autism and their associated developmental windows; 3) identification of the biologic and/or behavioral markers to develop indices of risk for the development of autism in infants; 4) intervention methods for infants and toddlers developed to lower the age for which there are efficacious interventions; 5) multisite randomized clinical trials to identify moderators and effective ingredients (e.