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DISTRIBUTION CHARACTERISTICS OF SPECTACLE LENS POWERS
Optometry and Vision Science, 1969ABSTRACT Attention is drawn to the distribution pattern of spectacle lens powers. Several authors showed that 0.25 and 0.75 diopter powers are usually less well represented than 0.50 and 0.00 diopter powers. Some authors' opinions about this phenomenon arc given.
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Explaining the characteristics of the power (CRRA) utility family
Health Economics, 2008AbstractThe power family, also known as the family of constant relative risk aversion (CRRA), is the most widely used parametric family for fitting utility functions to data. Its characteristics have, however, been little understood, and have led to numerous misunderstandings.
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Power characteristics of surface aerators
Journal of Chemical Technology & Biotechnology, 2010AbstractBACKGROUND: The hydrodynamic conditions of a surface aeration system can be characterized by interpreting the power consumption of the impeller. Power consumed by aeration tanks depends on the geometries of the impeller and tank, which is generally denoted by the power number.RESULTS: The various geometric and dynamic parameters affecting the ...
Achanta Ramakrishna Rao +2 more
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Characteristics of a Power Station Boiler
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 1994An experimental investigation of the flow patterns in a model of a power station boiler has been carried out under isothermal conditions, to produce data for computational fluid dynamic code validation. Measurements were made in three dimensions on a single swirl burner in isolation, in two dimensions on a bank of 12 burners in a 4 × 3 grid and in the ...
T O'Doherty, D Froud, C J Bates, N Syred
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Characteristics of Low-Power Links
2013This chapter aims at providing a summary of key properties of low-power links. First, it gives an overview of the radio technology most commonly used in low-power wireless networks. Then, it distils from the vast array of empirical studies on low-power links a set of high-level observations, which are classified into spatial and temporal ...
Nouha Baccour +10 more
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The Operating Characteristics of Power Tubes
Journal of Applied Physics, 1938This paper describes a new method of precalculating the performance of a power tube from its static characteristic curves. The 60-cycle test method is also briefly outlined and the results of the two methods compared and discussed. An appendix discusses the effect of secondary emission from the plate and grid and primary emission from the grid on the ...
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