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Measuring Instructional Practice In Science Using Classroom Artifacts:Lessons Learned From Two Validation Studies
science education measurement of instruction generalizability theory
2015/11/9
With growing interest in the role of teachers as the key mediators between educational policies and outcomes, the importance of developing good measures of classroom processes has become increasingly ...
Perceptual artifacts and phenomena:Gibson's role in the 20th century
Perceptual artifacts phenomena Gibson century
2015/8/13
The concepts of invariants and cues are useful, as are those of dorsal and ventral streams, but Norman overgeneralizes when interweav-ing them. Cues are not confined to identification tasks, invariant...
Reduction of CPR artifacts in the ventricular fibrillation ECG by coherent line removal
CPR artifacts the ventricular fibrillation ECG coherent line removal
2010/2/25
The localized coherent line removal algorithm reduces CPR-artifacts in VF-ECG, but does not eliminate them. Our SNR-improvements are in the same range as offered by multichannel methods of Rheinberger...
Interpolation Artifacts in Sub-Pixel Image Registration
Image registration interpolation artifacts mutual information
2009/12/23
We consider the problem of registering(aligning) two images to sub-pixel accuracy by optimization
of objective functions constructed from the images' intensity values.We show that some widely use
in...
Interpolation artifacts in biomedical image registration
Interpolation artifacts biomedical image registration local optima
2009/12/23
Interpolation artifacts in biomedical image registration.
Prototyping spoken here: artifacts and knowledge production in design
Prototyping artifacts design
2009/11/20
Artists and designers do not constitute a coherent group of professionals but they share a strategy of work where the artefacts are at the heart of the process. They are trained in a culture whose cen...
Artifact is a central concept in the study of practice. The analysis I elaborate in this paper, is primarily centered the production of artifacts as part of an art practice. I also present variations ...
Analysis of Cone-Beam Artifacts in off-Centered Circular CT for Four Reconstruction Methods
Cone-Beam Artifacts CT
2009/9/8
Cone-beam (CB) acquisition is increasingly used for truly three-dimensional X-ray computerized tomography (CT). However, tomographic reconstruction from data collected along a circular trajectory with...
Suppression of MRI Truncation Artifacts Using Total Variation Constrained Data Extrapolation
Variation Constrained Data Extrapolation MRI
2009/9/4
The finite sampling of k-space in MRI causes spurious image artifacts, known as Gibbs ringing, which result from signal truncation at the border of k-space. The effect is especially visible for acquis...
FILTERING OF ARTIFACTS AND PAVEMENT SEGMENTATION FROM MOBILE LIDAR DATA
LIDAR point cloud fi ltering ground data segmentation ground data mathematical morphology
2016/2/29
This paper presents an automatic method for filtering and segmenting 3D point clouds acquired from mobile LIDAR systems. Our
approach exploits 3D information by using range images and several m...
A No-Reference Blocking Artifacts Metric Using Selective Gradient and Plainness Measures
Blocking artifacts metric gradient measures plainness measures
2013/7/17
This paper presents a novel no-reference blocking artifacts metric using selective gradient and plainness (BAM_SGP) measures for DCT-coded images. A boundary selection criterion is introduced to dist...
Conservation Center for Art and Historic Artifacts
Conservation Center for Art and Historic Artifacts Art 艺术 Historic Artifacts 艺术品 cultural heritage 文化遗产
2007/12/25
The Conservation Center for Art and Historic Artifacts has grown to be one of the largest regional conservation laboratories in the country. Its wide array of services, sophisticated treatment facilit...