they may rely on advertisements to inform buyers of the best bargains and products. If a business successfully attracts more customers through advertising, it may be able to reduce its costs due to economies of scale. However, advertising
Of course, as previously stated, the resiliency attribute associated with the space determines degree of data availability in the presence of physical disk failure – for example, if the Documents space is three-way mirrored and allowed to use all disks within the pool, you can continue acces...
The similarity measures are normalized cross correlation (NCC) and the diagnostic distortion measures namely weighted PRD (PRD), weighted diagnostic distortion (WDD), wavelet based weighted PRD (WWPRD), wavelet Energy based diagnostic distortion (WEDD) and multiscale entropy-based weighted PRD (MSE...
As this decay depends strongly on the absence or presence of energy transfer channels (e.g., long- and short-range energy migrations, ion-to-ion energy transfer, and intra- and intermolecular energy transfer) [82], proper use of lifetime definition in the presence of energy transfer is ...
Monolithic all-perovskite tandem photovoltaics promise to combine low-cost and high-efficiency solar energy harvesting with the advantages of all-thin-film technologies. To date, laboratory-scale all-perovskite tandem solar cells have only been fabricate
An equity-efficiency tradeoff results when maximizing the efficiency of an economy leads to a reduction in its equity—as in how equitably its wealth or income is distributed. Economic efficiency; producing those goods and services that provide the most benefit at the lowest cost, is a primarynor...
Fig. 1: Examples of efficiency roll-off. a, Efficiency roll-off of prototypical fluorescent (Alq3), phosphorescent (Ir(ppy)2acac) and TADF (4CzIPN) OLEDs3,27,28.b, Schematic graph showing definition ofJ90.c, Graph of the relation betweenJ90and EQE1,000for TADF5,38,39,48,49,50,51...
The primary task of software engineers is the cost-effective development of maintainable and useful software. Jon Louis Bentley, Writing Efficient Programs (Prentice Hall, 1982)Even after 40 years, Jon’s definition of development is fairly accurate. The ultimate goal for any engineer is to create...
Given the qualitative nature of the information, it is necessary to establish evaluation criteria and a scoring scale for each indicator in order to minimize subjectivity and to ensure replicability, consistency and objectivity. On the one hand, the criteria draw on the recommendations provided byGiss...
Hence we expect that the same tradeoff mechanism identified in the small-scale examples from Figs. 2 through 4a–c also governs the behavior of more realistic, large-scale learning problems. Altogether, our present results suggest a couple of approaches to monitor the accuracy and efficiency in ...