A new method based on quadratic constrained leastmean-square fitting to simultaneously determine both the best hyperbolic and elliptical fits to a set of scattered data is presented. Thus a linear solution to the problem of hyperbola-specific fitting is revealed for the first time. Pilu’s method to fit an ellipse (with respect to distance) to observed data points is extended to select, without ...

We present a fabrication route for centimeter-scale two-dimensional defect-free photonic crystal slabs with quality factors bigger than 10,000 in the visible, together with a unique way to quantify their quality factors. We fabricate Si(3)N(4) photonic crystal slabs, and perform an angle-resolved reflection measurement. This measurement data is used to retrieve the quality factors of the slabs ...

Water quality prediction can be applied to guard against all kinds of emergency events and provide decision support to the relevant departments. Many water quality prediction methods have supplied, such as time series analysis method, fuzzy algorithm, artificial neural network, wavelet analysis. Time series analysis method is suitable for the changing apparent data sequence, the predicted data ...

Purpose To investigate the relation between optical properties, population receptive fields (pRFs), visual function, and subjectively perceived quality of vision after cataract surgery. Methods The study includes 30 patients who had recently undergone bilateral sequential cataract surgery. We used functional magnetic resonance imaging and pRF modelling methods to assess pRF sizes across visua...

Thurstone’s Law of Comparative Judgment provides a method to convert subjective paired comparisons into one-dimensional quality scores. Applications include judging quality of different image reconstructions, or different products, or different web search results, etc. This tutorial covers the popular Thurstone-Mosteller Case V model and the Bradley-Terry logistic variant. We describe three app...

UNLABELLED In the present days it is critical to identify the factors that contribute to the quality of the audiologic care provided. The hearing aid fitting model proposed by the Brazilian Unified Health System (SUS) implies multidisciplinary care. This leads to some relevant and current questions. OBJECTIVE To evaluate and compare the results of the hearing aid fitting model proposed by the...

A systematic approach is presented to obtain improved panel tit quality through the use of an optimum panel fitting strategy. ‘The objective of the optimal1 panel fitting strategy is to determine the location of the panels on the automobile body such that the gap and flush variation of the panel fit are mmimized. This approach uses measurement data from both the panels and the body-inwhite (BIW...

A hierarchical family of analytical Born–Oppenheimer potential energy surfaces has been developed for the H1H2 system. Ab initio calculations of near full configuration interaction ~FCI! quality ~converged to within '1 mEh! were performed for a set of 4067 configurations with the aug-cc-pVDZ, aug-cc-pVTZ, and aug-cc-pVQZ basis sets. The complete basis set ~CBS! limit energies were obtained usin...

In performing a fuzzy multiple linear regression model, important topics are: to measure the fitting quality of the model and to find the “best” set of input variables that explain the variation in the observed system responses. In this paper, by considering an exploratory approach, to express the quality of fit of a fuzzy linear regression model, a coefficient of multiple determination R2 for ...