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https://www.readbyqxmd.com/read/28715330/anti-impulse-noise-edge-detection-via-anisotropic-morphological-directional-derivatives
#1
Peng-Lang Shui, Fu-Ping Wang
Traditional differential-based edge detection suffers from abrupt degradation in performance when images are corrupted by impulse noises. The morphological operators such as the median filters and weighted median filters possess the intrinsic ability to counteract impulse noise. In this paper, by combining the biwindow configuration with weighted median filters, anisotropic morphological directional derivatives (AMDD) robust to impulse noise are proposed to measure the local grayscale variation around a pixel...
July 13, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28708559/texture-characterization-using-shape-co-occurrence-patterns
#2
Gui-Song Xia, Gang Liu, Xiang Bai, Liangpei Zhang
Texture characterization is a key problem in image understanding and pattern recognition. In this paper, we present a flexible shape-based texture representation using shape co-occurrence patterns. More precisely, texture images are first represented by a tree of shapes, each of which is associated with several geometrical and radiometric attributes. Then, four typical kinds of shape co-occurrence patterns based on the hierarchical relationships among the shapes in the tree are learned as codewords. Three different coding methods are investigated for learning the codewords, which can be used to encode any given texture image into a descriptive vector...
July 12, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28707639/life-in-unexpected-places-employing-visual-thinking-strategies-in-global-health-training
#3
Jill Allison, Shree Mulay, Monica Kidd
BACKGROUND: The desire to make meaning out of images, metaphor, and other representations indicates higher-order cognitive skills that can be difficult to teach, especially in the complex and unfamiliar environments like those encountered in many global health experiences. Because reflecting on art can help develop medical students' imaginative and interpretive skills, we used visual thinking strategies (VTS) during an immersive 4-week global health elective for medical students to help them construct new understanding of the social determinants of health in a low-resource setting...
January 2017: Education for Health: Change in Training & Practice
https://www.readbyqxmd.com/read/28678273/in-search-of-invariants-for-viscous-liquids-in-the-density-scaling-regime-investigations-of-dynamic-and-thermodynamic-moduli
#4
Agnieszka Jedrzejowska, Andrzej Grzybowski, Marian Paluch
In this paper, we report the nontrivial results of our investigations of dynamic and thermodynamic moduli in search of invariants for viscous liquids in the density scaling regime by using selected supercooled van der Waals liquids as representative materials. Previously, the dynamic modulus Mp-T (defined in the pressure-temperature representation by the ratio of isobaric activation energy and activation volume) as well as the ratio BT/Mp-T (where BT is the thermodynamic modulus defined as the inverse isothermal compressibility) have been suggested as some kinds of material constants...
July 5, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28676768/beyond-monologicality-exploring-conspiracist-worldviews
#5
Bradley Franks, Adrian Bangerter, Martin W Bauer, Matthew Hall, Mark C Noort
Conspiracy theories (CTs) are widespread ways by which people make sense of unsettling or disturbing cultural events. Belief in CTs is often connected to problematic consequences, such as decreased engagement with conventional political action or even political extremism, so understanding the psychological and social qualities of CT belief is important. CTs have often been understood to be "monological," displaying the tendency for belief in one conspiracy theory to be correlated with belief in (many) others...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28676465/cancer-related-fatigue-in-post-treatment-cancer-survivors-theory-based-development-of-a-web-based-intervention
#6
Teresa Corbett, Jane C Walsh, AnnMarie Groarke, Rona Moss-Morris, Eimear Morrissey, Brian E McGuire
BACKGROUND: Cancer-related fatigue (CrF) is the most common and disruptive symptom experienced by cancer survivors. We aimed to develop a theory-based, interactive Web-based intervention designed to facilitate self-management and enhance coping with CrF following cancer treatment. OBJECTIVE: The aim of our study was to outline the rationale, decision-making processes, methods, and findings which led to the development of a Web-based intervention to be tested in a feasibility trial...
July 4, 2017: JMIR Cancer
https://www.readbyqxmd.com/read/28669510/word-selection-processing-in-parkinson-s-disease-when-nouns-are-more-difficult-than-verbs
#7
Maria C Silveri, Daniela Traficante, Maria R Lo Monaco, Laura Iori, Federica Sarchioni, Cristina Burani
Patients with Parkinson's disease (PD) are impaired in verb production. Interpretations range from grammatical deficits to semantic-conceptual decay of action representation. The verb production deficit in PD can also be considered a dysexecutive disorder, specifically, a deficit of selection processing during word production, due to corticostriatal damage. Producing verbs is "more difficult" than producing nouns, because verb-forms must be selected from a large set of word-forms which share the verb-root, and the set of possible verb-forms is larger than the set of possible noun-forms when a noun has to be produced...
June 7, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28648571/the-neuro-cognitive-representations-of-symbols-the-case-of-concrete-words
#8
Valentina Borghesani, Manuela Piazza
We live our lives surrounded by symbols (e.g., road signs, logos, but especially words and numbers), and throughout our life we use them to evoke, communicate and reflect upon ideas and things that are not currently present to our senses. Symbols are represented in our brains at different levels of complexity: at the first and most simple level, as physical entities, in the corresponding primary and secondary sensory cortices. The crucial property of symbols, however, is that, despite the simplicity of their surface forms, they have the power of evoking higher order multifaceted representations that are implemented in distributed neural networks spanning a large portion of the cortex...
June 22, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28618557/scale-free-networks-emerging-from-multifractal-time-series
#9
Marcello A Budroni, Andrea Baronchelli, Romualdo Pastor-Satorras
Methods connecting dynamical systems and graph theory have attracted increasing interest in the past few years, with applications ranging from a detailed comparison of different kinds of dynamics to the characterization of empirical data. Here we investigate the effects of the (multi)fractal properties of a signal, common in time series arising from chaotic dynamics or strange attractors, on the topology of a suitably projected network. Relying on the box-counting formalism, we map boxes into the nodes of a network and establish analytic expressions connecting the natural measure of a box with its degree in the graph representation...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28600676/the-contributions-of-visual-and-central-attention-to-visual-working-memory
#10
Alessandra S Souza, Klaus Oberauer
We investigated the role of two kinds of attention-visual and central attention-for the maintenance of visual representations in working memory (WM). In Experiment 1 we directed attention to individual items in WM by presenting cues during the retention interval of a continuous delayed-estimation task, and instructing participants to think of the cued items. Attending to items improved recall commensurate with the frequency with which items were attended (0, 1, or 2 times). Experiments 1 and 3 further tested which kind of attention-visual or central-was involved in WM maintenance...
June 9, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28588524/perceptual-plasticity-for-auditory-object-recognition
#11
Shannon L M Heald, Stephen C Van Hedger, Howard C Nusbaum
In our auditory environment, we rarely experience the exact acoustic waveform twice. This is especially true for communicative signals that have meaning for listeners. In speech and music, the acoustic signal changes as a function of the talker (or instrument), speaking (or playing) rate, and room acoustics, to name a few factors. Yet, despite this acoustic variability, we are able to recognize a sentence or melody as the same across various kinds of acoustic inputs and determine meaning based on listening goals, expectations, context, and experience...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28567022/the-impact-of-gender-stereotypes-on-the-self-concept-of-female-students-in-stem-subjects-with-an-under-representation-of-females
#12
Bernhard Ertl, Silke Luttenberger, Manuela Paechter
It's possible to assume that women who study STEM topics with a low proportion of females have successfully overcome barriers in school and the family, making them less prone to stereotypic views, and influences. The present study focuses on these kinds of factors and analyzes to which degree family factors, school-related factors, and individual stereotypes may influence a woman's academic self-concept. The following study presents a latent regression model which is based on a survey of 296 women from different German universities, all of whom are part of STEM programs of study that have <30% females...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28566734/quantum-realization-of-the-bilinear-interpolation-method-for-neqr
#13
Ri-Gui Zhou, Wenwen Hu, Ping Fan, Hou Ian
In recent years, quantum image processing is one of the most active fields in quantum computation and quantum information. Image scaling as a kind of image geometric transformation has been widely studied and applied in the classical image processing, however, the quantum version of which does not exist. This paper is concerned with the feasibility of the classical bilinear interpolation based on novel enhanced quantum image representation (NEQR). Firstly, the feasibility of the bilinear interpolation for NEQR is proven...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28550288/infants-learn-better-from-left-to-right-a-directional-bias-in-infants-sequence-learning
#14
Hermann Bulf, Maria Dolores de Hevia, Valeria Gariboldi, Viola Macchi Cassia
A wealth of studies show that human adults map ordered information onto a directional spatial continuum. We asked whether mapping ordinal information into a directional space constitutes an early predisposition, already functional prior to the acquisition of symbolic knowledge and language. While it is known that preverbal infants represent numerical order along a left-to-right spatial continuum, no studies have investigated yet whether infants, like adults, organize any kind of ordinal information onto a directional space...
May 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28514909/what-can-action-learning-offer-a-beleaguered-system-a-narrative-representing-the-relationship
#15
James Traeger
Purpose This is an attempt to write an account of action learning that is as close to the ground on which it was practised as the author can make it. In that sense, the reader can read what follows below as a kind of autoethnography, a "representation as relationship" as Gergen and Gergen (2002, p. 11) call it. This is because in the opportunity of telling a story about his practice as an action learning facilitator, the author hopes to evoke that which is more akin to the contactful environment of quality action learning than any amount of abstract theorising...
May 2, 2017: Leadership in Health Services
https://www.readbyqxmd.com/read/28512359/the-perceived-stability-of-scenes-serial-dependence-in-ensemble-representations
#16
Mauro Manassi, Alina Liberman, Wesley Chaney, David Whitney
We are continuously surrounded by a noisy and ever-changing environment. Instead of analyzing all the elements in a scene, our visual system has the ability to compress an enormous amount of visual information into ensemble representations, such as perceiving a forest instead of every single tree. Still, it is unclear why such complex scenes appear to be the same from moment to moment despite fluctuations, noise, and discontinuities in retinal images. The general effects of change blindness are usually thought to stabilize scene perception, making us unaware of minor inconsistencies between scenes...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28504410/unpacking-the-ontogeny-of-gesture-understanding-how-movement-becomes-meaningful-across-development
#17
Elizabeth M Wakefield, Miriam A Novack, Susan Goldin-Meadow
Gestures, hand movements that accompany speech, affect children's learning, memory, and thinking (e.g., Goldin-Meadow, 2003). However, it remains unknown how children distinguish gestures from other kinds of actions. In this study, 4- to 9-year-olds (n = 339) and adults (n = 50) described one of three scenes: (a) an actor moving objects, (b) an actor moving her hands in the presence of objects (but not touching them), or (c) an actor moving her hands in the absence of objects. Participants across all ages were equally able to identify actions on objects as goal directed, but the ability to identify empty-handed movements as representational actions (i...
May 15, 2017: Child Development
https://www.readbyqxmd.com/read/28502632/two-years-later-revisiting-autobiographical-memory-representations-in-vmpfc-and-hippocampus
#18
Heidi M Bonnici, Eleanor A Maguire
A long-standing question in memory neuroscience concerns how and where autobiographical memories of personal experiences are represented in the brain. In a previous high resolution multivoxel pattern analysis fMRI study, we examined two week old (recent) and ten year old (remote) autobiographical memories (Bonnici et al., 2012, J. Neurosci. 32:16982-16991). We found that remote memories were particularly well represented in ventromedial prefrontal cortex (vmPFC) compared to recent memories. Moreover, while both types of memory were represented within anterior and posterior hippocampus, remote memories were more easily distinguished in the posterior portion...
May 11, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28484376/information-and-the-origin-of-qualia
#19
Roger Orpwood
This article argues that qualia are a likely outcome of the processing of information in local cortical networks. It uses an information-based approach and makes a distinction between information structures (the physical embodiment of information in the brain, primarily patterns of action potentials), and information messages (the meaning of those structures to the brain, and the basis of qualia). It develops formal relationships between these two kinds of information, showing how information structures can represent messages, and how information messages can be identified from structures...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28480333/a-unified-model-of-human-semantic-knowledge-and-its-disorders
#20
Lang Chen, Matthew A Lambon Ralph, Timothy T Rogers
How is knowledge about the meanings of words and objects represented in the human brain? Current theories embrace two radically different proposals: either distinct cortical systems have evolved to represent different kinds of things, or knowledge for all kinds is encoded within a single domain-general network. Neither view explains the full scope of relevant evidence from neuroimaging and neuropsychology. Here we propose that graded category-specificity emerges in some components of the semantic network through joint effects of learning and network connectivity...
March 2017: Nature Human Behaviour
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