Results 131 to 140 of about 593,236 (165)

A transformation of the Domin scale

Plant Ecology, 1987
Some of the problems associated with the use of both percentage cover and cover-abundance scales for describing vegetation are discussed. A transformation, referred to as ‘Domin 2.6’, is outlined for use with the Domin scale. This transformation allows more accurate estimates of means of Domin scores to be obtained, than are produced by direct ...
exaly   +2 more sources

Scaling-Basis Chirplet Transform

IEEE Transactions on Industrial Electronics, 2021
In this study, a novel time–frequency (TF) analysis method, referred to as the scaling-basis chirplet transform (SBCT), is developed by extending the conventional chirplet transform. This method includes a replacement kernel function that can vary the chirp rate with frequency and time by scaling the TF basis at and around the corresponding time center.
Miaofen Li, Tianyang Wang 0001, Fulei Chu, Qinkai Han, Zhaoye Qin, Ming Jian Zuo   +5 more
openaire   +1 more source

On Transforming Relevance Scales

Proceedings of the 28th ACM International Conference on Information and Knowledge Management, 2019
Information Retrieval (IR) researchers have often used existing IR evaluation collections and transformed the relevance scale in which judgments have been collected, e.g., to use metrics that assume binary judgments like Mean Average Precision. Such scale transformations are often arbitrary (e.g., 0,1 mapped to 0 and 2,3 mapped to 1) and it is assumed ...
Lei Han 0003, Kevin Roitero, Eddy Maddalena, Stefano Mizzaro, Gianluca Demartini   +4 more
openaire   +4 more sources

Transformation at Scale

2020
This chapter summarizes a unique department-wide effort in the adoption, development, implementation, and assessment of open educational resources (OER) for a wide range of information technology courses. The chapter presents the development principles and practices at four levels: OER-driven pedagogies, OER adoption and development, course design ...
Jack Zheng, Zhigang Li, Lei Li, Rebecca Rutherfoord   +3 more
openaire   +1 more source

Scale transform in speech analysis

IEEE Transactions on Speech and Audio Processing, 1999
In this paper, we study the scale transform of the spectral-envelope of speech utterances by different speakers. This study is motivated by the hypothesis that the formant frequencies between different speakers are approximately related by a scaling constant for a given vowel.
Srinivasan Umesh, Leon Cohen, Nenad Marinovic, Douglas J. Nelson   +3 more
openaire   +1 more source

On the shape transformation of cone scales

Soft Matter, 2016
The shape-morphing behaviours of some biological systems have drawn considerable interest over many years. This paper divulges that the opening and closing mechanism of pine cones is attributed to the self-bending of their scales, which undergo three states of humidity-driven deformation in terms of Föppl-von Kármán plate theory.
Lin, Sen, Xie, Yi Min, Li, Qing, Huang, Xiaodong, Zhou, Shiwei   +4 more
openaire   +3 more sources

Scale-adapted wavelet transform

Optics Letters, 1996
A modified wavelet transform, the scale-adapted wavelet transform (SAWT), is proposed. The scale factor is adaptively changed according to the local structure of the input signal. The transformed image keeps the same dimensions as the input signal without losing the meaningful multiresolution representation.
S, Chang, H H, Arsenault
openaire   +2 more sources

The scaling behavior of viewing transformations

IEEE Computer Graphics and Applications, 1993
Using formal analysis of parallel and perspective viewing transformation behavior, closed-form form expressions are obtained for immediate evaluation of maximum, minimum, and average scales at a given point in space. While these are constant for parallel transformations, they vary from point to point for perspective transformations.
Salim S. Abi-Ezzi, Leon A. Shirman
openaire   +1 more source