نتایج جستجو برای: polarity index

تعداد نتایج: 420779  

Journal: :JCP 2013
Meng Yang Jiarong Tong Jinmei Lai

An efficient minimisation method is presented to find the best polarity of fixed polarity canonical orcoincidence (COC) expansions. The method derives one COC fixed polarity expansion from another adjacent polarity expansion. To reduce CPU time, it utilises bitwise operation and Gray code. Furthermore, it counts the number of “0”s in the polarity matrix rather than polarity matrix multiplicatio...

2017
Alessandro Valitutti Nicole Novielli

In this paper, we propose two metrics capable of modeling forms of polarity contrast: polarity divergence and polarity dimorphism. To explore their potential usefulness to the detection of verbal irony and sentiment polarity, we performed an exploratory text analysis on a corpus of figurative tweets annotated by sentiment. The results of a text analysis show that, employing two different types ...

Journal: :Vision Research 2008
Iiris Luiga Talis Bachmann

We probed how processing of luminance increments and decrements interacts with attention dependent substitution masking. Results showed that a target was identified better when surrounded by an opposite polarity mask as compared to the same polarity mask. Opposite polarity mask decreased an effect of distracters, indicating influence on the time of directing attention to a target. The opposite ...

2015
Yunqing Xia Huan Zhao Erik Cambria Amir Hussain

Many opinion words carry different polarity in different context, posing huge challenges to sentiment analysis research. Previous work on contextual polarity disambiguation makes use of term-level context such as word and patterns, and resolves the polarity with patternbased methods, PMI-based statistical techniques and machine learning methods. The major shortcoming of all such approaches lies...

2014
Luying Li Fanfan Tu Lei Jin Wallace C. H. Choy Yihua Gao Jianbo Wang

ZnSe nanospirals including structures with polarity continuation and polarity frustration are simultaneously observed at atomic resolution. Through careful analysis of polarity within each dumbbell based on aberration-corrected high-angle annular-dark-field imaging, polarity continuation across parallel polytype interfaces as well as the surrounding Z-shape faulted dipoles is verified. Moreover...

Journal: :Genes & development 2004
David Bilder

Mammalian epithelial tumors lose polarity as they progress toward malignancy, but whether polarity loss might causally contribute to cancer has remained unclear. In Drosophila, mutations in the "neoplastic tumor suppressor genes" (nTSGs) scribble, discs-large, and lethal giant larvae disrupt polarity of epithelia and neuroblasts, and simultaneously induce extensive overproliferation of these ce...

The purpose of this study was to analyze selected Wolaita proverbs for their reflection of prejudiced negative images of femininity. The subjects used for the current study were 20 theme-relevant proverbs collected by interviewing systematically selected 12 elders and conducting participant-based observation. The qualitative research design was used to conduct this study. The result indicated t...

Journal: :The Journal of Cell Biology 2007
Miao-Chih Tsai Julie Ahringer

Microtubules deliver positional signals and are required for establishing polarity in many different organisms and cell types. In Caenorhabditis elegans embryos, posterior polarity is induced by an unknown centrosome-dependent signal. Whether microtubules are involved in this signaling process has been the subject of controversy. Although early studies supported such an involvement (O'Connell, ...

Journal: :Ergonomics 2013
Cosima Piepenbrock Susanne Mayr Iris Mund Axel Buchner

UNLABELLED The effect of display polarity on visual acuity and proofreading performance was investigated for younger and older adults. An advantage of positive polarity (dark characters on light background) over negative polarity (light characters on dark background) was expected for younger adults, but the effects on older adults were ambiguous. Light scatter due to residues in the senescent l...

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