Results 241 to 250 of about 96,079 (289)

Casting a shadow

Early Years Educator, 2021
The pandemic has hit disadvantaged families particularly hard and the rise of domestic abuse in lockdown has been described by the UN as a ‘shadow pandemic’. Sue Cowley analyses the wider implications for children's education and well-being, and what practitioners need to consider.
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A Fourier theory for cast shadows

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2004
Cast shadows can be significant in many computer vision applications, such as lighting-insensitive recognition and surface reconstruction. Nevertheless, most algorithms neglect them, primarily because they involve nonlocal interactions in nonconvex regions, making formal analysis difficult.
Ravi Ramamoorthi   +2 more
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Algorithms for antialiased cast shadows

Computers & Graphics, 1985
Abstract The ability to render the shadows cast by objects in a scene is of prime importance in augmenting the realism of sequences produced by image synthesis algorithms. From a theoretical standpoint, the problem does not present a great number of difficulties: It requires an integration in the process, of the viewpoint from the light source and ...
Jean-Charles Hourcade, Alain Nicolas
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Cast Shadows in Wide Perspective

Perception, 2011
We investigated the apparent spatial layout of cast shadows up to very wide fields of view. We presented up to 130° wide images in which two ‘flat poles’ were standing on a green lawn under a cloudless blue sky on a sunny day. The poles threw sharp cast shadows on the green, of which one was fixed.
Sylvia C, Pont   +6 more
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Shadow casting

Physics Today, 1949
The technique of shadow casting, in which a beam of atoms is sprayed obliquely across an electron microscope specimen and allowed to condense, results in enormously increased contrast and in a pronounced three-dimensional effect in the image.
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Shadows cast by redundancy offers

Nursing Standard, 1993
Voluntary redundancy has been offered to nurses at an Oxford hospital because services are being rationalised' and there are uncertainties over contracts for the next financial year.
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Shadows as Sources of Cues for Distance of Shadow-Casting Objects

Perceptual and Motor Skills, 1999
Shadows are neglected sources of information about shadow-casting objects' distance (location). In an experiment using real shadows, participants judged the distance of two rods, either with shadows (illumination from the left) or without shadows. Without shadows, a thin rod raised slightly above the surface was incorrectly judged to be more distant ...
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Casting shadows of perception

The Nurse Practitioner
Abstract: Hallucinations can be caused by biological, psychological, neurological, ophthalmological, and environmental factors. This article discusses a selection of the various conditions that can present with visual disturbances and hallucinations including schizophrenia, HIV, neurosyphilis, hyperammonemia, migraine, substance use, brain ...
Pauline, Stoltzner, Cameron, Duncan
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What Is It That Casts A Shadow?

Problems in Economics, 1989
We entered the second half of the 1980s with some rather vague notions about the shadow economy. And with a very heavy guilt complex: after all, the practice of law enforcement and economic organs passed theory in this area by two lengths.
O. V. Osipenko, Iu. G. Kozlov
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