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Knowledge representation

Giacomo Rizzolatti, Corrado Sinigaglia
The mirror mechanism is a basic brain mechanism that transforms sensory representations of others' behaviour into one's own motor or visceromotor representations concerning that behaviour. According to its location in the brain, it may fulfil a range of cognitive functions, including action and emotion understanding. In each case, it may enable a route to knowledge of others' behaviour, which mainly depends on one's own motor or visceromotor representations.
October 20, 2016: Nature Reviews. Neuroscience
Daphne E Whitmer, Valerie K Sims, Michael E Torres
OBJECTIVE: The goals of this study were to assess the risk identification aspect of mental models using standard elicitation methods and how university campus alerts were related to these mental models. BACKGROUND: People fail to follow protective action recommendations in emergency warnings. Past research has yet to examine cognitive processes that influence emergency decision-making. METHOD: Study 1 examined 2 years of emergency alerts distributed by a large southeastern university...
October 19, 2016: Human Factors
Irene Gratton, Maria A Brandimonte, Nicola Bruno
The ability to remember tempo (the perceived frequency of musical pulse) without external references may be defined, by analogy with the notion of absolute pitch, as absolute tempo (AT). Anecdotal reports and sparse empirical evidence suggest that at least some individuals possess AT. However, to our knowledge, no systematic assessments of AT have been performed using laboratory tasks comparable to those assessing absolute pitch. In the present study, we operationalize AT as the ability to identify and reproduce tempo in the absence of rhythmic or melodic frames of reference and assess these abilities in musically trained and untrained participants...
2016: PloS One
Usha Goswami, Lisa Barnes, Natasha Mead, Alan James Power, Victoria Leong
Children with developmental dyslexia are characterized by phonological difficulties across languages. Classically, this 'phonological deficit' in dyslexia has been investigated with tasks using single-syllable words. Recently, however, several studies have demonstrated difficulties in prosodic awareness in dyslexia. Potential prosodic effects in short-term memory have not yet been investigated. Here we create a new instrument based on three-syllable words that vary in stress patterns, to investigate whether prosodic similarity (the same prosodic pattern of stressed and unstressed syllables) exerts systematic effects on short-term memory...
October 17, 2016: Dyslexia: the Journal of the British Dyslexia Association
Yehoshua Perl, James Geller, Michael Halper, Christopher Ochs, Ling Zheng, Joan Kapusnik-Uner
The purpose of the Big Data to Knowledge initiative is to develop methods for discovering new knowledge from large amounts of data. However, if the resulting knowledge is so large that it resists comprehension, referred to here as Big Knowledge (BK), how can it be used properly and creatively? We call this secondary challenge, Big Knowledge to Use. Without a high-level mental representation of the kinds of knowledge in a BK knowledgebase, effective or innovative use of the knowledge may be limited. We describe summarization and visualization techniques that capture the big picture of a BK knowledgebase, possibly created from Big Data...
October 17, 2016: Annals of the New York Academy of Sciences
Renee E Shimizu, Allan D Wu, Barbara J Knowlton
Effective learning results not only in improved performance on a practiced task, but also in the ability to transfer the acquired knowledge to novel, similar tasks. Using a modified serial reaction time (RT) task, the authors examined the ability to transfer to novel sequences after practicing sequences in a repetitive order versus a nonrepeating interleaved order. Interleaved practice resulted in better performance on new sequences than repetitive practice. In a second study, participants practiced interleaved sequences in a functional MRI (fMRI) scanner and received a transfer test of novel sequences...
October 17, 2016: Behavioral Neuroscience
N Ramaiah, Ajay Kumar
Iris recognition systems are increasingly deployed for large-scale applications such as national ID programs which continue to acquire millions of iris images to establish identity among billions. However with the availability of variety of iris sensors that are deployed for the iris imaging under different illumination/environment, significant performance degradation is expected while matching such iris images acquired under two different domains (either sensor-specific or wavelength-specific). This paper develops a domain adaptation framework to address this problem and introduces a new algorithm using Markov random fields (MRF) model to significantly improve cross-domain iris recognition...
October 10, 2016: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
Agata Stryjewska, Ruben Dries, Tim Pieters, Griet Verstappen, Andrea Conidi, Kathleen Coddens, Annick Francis, Lieve Umans, Wilfred F J van IJcken, Geert Berx, Leo A van Grunsven, Frank Grosveld, Steven Goossens, Jody J Haigh, Danny Huylebroeck
In human ESCs the transcription factor Zeb2 regulates neuroectoderm versus mesendoderm formation, but it is unclear how Zeb2 affects the global transcriptional regulatory network in these cell-fate decisions. We generated Zeb2 knockout (KO) mouse ESCs, subjected them as embryoid bodies (EBs) to neural and general differentiation and carried out temporal RNA-sequencing (RNA-seq) and reduced representation bisulfite sequencing (RRBS) analysis in neural differentiation. This shows that Zeb2 acts preferentially as a transcriptional repressor associated with developmental progression and that Zeb2 KO ESCs can exit from their naïve state...
October 14, 2016: Stem Cells
Valdester Cavalcante Pinto, Rodrigo Cardoso Cavalcante, Klébia Magalhães P Castello Branco, Candice Torres de Melo Bezerra Cavalcante, Isabel Cristina Leite Maia, Nayana Maria Gomes de Souza, Kiarelle Lourenço Penaforte, Juan Alberto Cosquillo Mejia, Waldemiro Carvalho
The perspective of the integrated health system has a network of care with multiple integration dimensions among subsystems as nuclear representation, relating the clinical aspects and governance to the representations and collective values. The normative integration aims to ensure coherence between the system of representations and values of society simultaneously with the interfaces of clinical and functional integration. It builds a bridge with governance, which allows, through their skills, management of all system components, encouraging cooperation, communication and information, in order to ensure the population under their responsibility to access excellence services, exceeding their expectations...
May 2016: Brazilian Journal of Cardiovascular Surgery
Melanie Baxter, Lori Erby, Debra Roter, Barbara A Bernhardt, Peter Terry, Alan Guttmacher
PURPOSE: This study aimed to identify factors that influence screening behaviors of adults with hereditary hemorrhagic telangiectasia (HHT). METHODS: Participants with a self-reported diagnosis of HHT were recruited from the HHT Foundation International, Inc.; the "HHT Awareness" Facebook group; and six HHT clinics. A cross-sectional mixed methods survey was administered to investigate the relationships among the Health Belief model constructs, the domains of illness representations, and HHT-specific screening behaviors consistent with recommended guidelines...
October 13, 2016: Genetics in Medicine: Official Journal of the American College of Medical Genetics
Ivan Kourtchev, Chiara Giorio, Antti Manninen, Eoin Wilson, Brendan Mahon, Juho Aalto, Maija Kajos, Dean Venables, Taina Ruuskanen, Janne Levula, Matti Loponen, Sarah Connors, Neil Harris, Defeng Zhao, Astrid Kiendler-Scharr, Thomas Mentel, Yinon Rudich, Mattias Hallquist, Jean-Francois Doussin, Willy Maenhaut, Jaana Bäck, Tuukka Petäjä, John Wenger, Markku Kulmala, Markus Kalberer
Secondary organic aerosol (SOA) accounts for a dominant fraction of the submicron atmospheric particle mass, but knowledge of the formation, composition and climate effects of SOA is incomplete and limits our understanding of overall aerosol effects in the atmosphere. Organic oligomers were discovered as dominant components in SOA over a decade ago in laboratory experiments and have since been proposed to play a dominant role in many aerosol processes. However, it remains unclear whether oligomers are relevant under ambient atmospheric conditions because they are often not clearly observed in field samples...
October 13, 2016: Scientific Reports
Yvette Kezilas, Saskia Kohnen, Meredith McKague, Serje Robidoux, Anne Castles
Studies have shown that letter position processing changes as reading develops. Whether these changes are driven by the development of the orthographic lexicon is currently unclear. In this study, we administered a novel variant of the Reicher-Wheeler task to children aged 7-12 years (Experiment 1) and adults (Experiment 2) to clarify the role of the developing lexicon in letter position processing. The task required participants to report the identity of a letter at a specified position within 3 orthographic contexts: anagram words (e...
August 15, 2016: Journal of Experimental Psychology. Human Perception and Performance
Ali Jassem Buabbas, Hamza Mohammad Hassan Al-Shawaf, Abdullah Abdulaziz Almajran
BACKGROUND: In medical education, information and communication technology (ICT) knowledge and skills have become a necessity and an integral part of preparing tomorrow's doctors to be sufficiently competent to use informatics resources effectively and efficiently for the best practice of medicine. OBJECTIVE: This research aimed to study the literacy of the preprofessional students in ICT before and after taking the basic informatics course at the Health Sciences Center at Kuwait University, to understand their potential and their attitudes toward using ICT, including e-learning...
June 20, 2016: JMIR Med Educ
Neeraj Nagpal
Physicians and Internists in India have tended to brush under the carpet legal issues affecting their profession. Of concern to all Physicians is the judgment in a recent case where the NCDRC has stated that if MD Medicine Physicians write Physician & Cardiologist on their letterhead it is Quackery. What is MD Medicine degree holder in India qualified and trained to treat ? These are issues which need debate and that can only be initiated once we recognize that there is a problem. Either an MD Medicine is a cardiologist or he is not...
February 2016: Journal of the Association of Physicians of India
Manoj Jayabalan, Thomas O'Daniel
This study presents a systematic literature review of access control for electronic health record systems to protect patient's privacy. Articles from 2006 to 2016 were extracted from the ACM Digital Library, IEEE Xplore Digital Library, Science Direct, MEDLINE, and MetaPress using broad eligibility criteria, and chosen for inclusion based on analysis of ISO22600. Cryptographic standards and methods were left outside the scope of this review. Three broad classes of models are being actively investigated and developed: access control for electronic health records, access control for interoperability, and access control for risk analysis...
December 2016: Journal of Medical Systems
P Blanpain-Avet, C André, M Khaldi, L Bouvier, J Petit, T Six, R Jeantet, T Croguennec, G Delaplace
Fouling of plate heat exchangers (PHE) is a severe problem in the dairy industry, notably because the relationship between the build-up of protein fouling deposits and the chemical reactions taking place in the fouling solution has not yet been fully elucidated. Experiments were conducted at pilot scale in a corrugated PHE, and fouling deposits were generated using a model β-lactoglobulin (β-LG) fouling solution for which the β-LG thermal denaturation reaction constants had been previously determined experimentally...
October 5, 2016: Journal of Dairy Science
Youlu Xing, Xiaofeng Shi, Furao Shen, Ke Zhou, Jinxi Zhao
In this paper, we propose an unsupervised incremental learning neural network based on local distribution learning, which is called Local Distribution Self-Organizing Incremental Neural Network (LD-SOINN). The LD-SOINN combines the advantages of incremental learning and matrix learning. It can automatically discover suitable nodes to fit the learning data in an incremental way without a priori knowledge such as the structure of the network. The nodes of the network store rich local information regarding the learning data...
September 13, 2016: Neural Networks: the Official Journal of the International Neural Network Society
M Morgiève, K N'Diaye, S Fernandez-Vidal, A-H Clair, L Mallet
INTRODUCTION: Obsessive compulsive disorder (OCD) is one of the most disabling mental health disorders due to its negative impact on the patient's quality of life as well on that of her living caregivers. This disorder generates an additional burden for relatives, which may in turn affect the family dynamics and impair the evolution of the disease. Along with medications, cognitive behavioral therapy (CBT) represents a well-validated first line of treatment for OCD. However, therapeutic responses across patients are uneven with often residual symptoms and limited quality of life improvements...
October 4, 2016: L'Encéphale
Idoia Berges, David Antón, Jesús Bermúdez, Alfredo Goñi, Arantza Illarramendi
BACKGROUND: One of the current research efforts in the area of biomedicine is the representation of knowledge in a structured way so that reasoning can be performed on it. More precisely, in the field of physiotherapy, information such as the physiotherapy record of a patient or treatment protocols for specific disorders must be adequately modeled, because they play a relevant role in the management of the evolutionary recovery process of a patient. In this scenario, we introduce TRHONT, an application ontology that can assist physiotherapists in the management of the patients' evolution via reasoning supported by semantic technology...
October 4, 2016: Journal of Biomedical Semantics
Jiandong Yang, Fujun Shen, Rong Hou, Yang Da
BACKGROUND: A major function of the captive panda population is to preserve the genetic diversity of wild panda populations in their natural habitats. Understanding the genetic composition of the captive panda population in terms of genetic contributions from the wild panda populations provides necessary knowledge for breeding plans to preserve the genetic diversity of the wild panda populations. RESULTS: The genetic contributions from different wild populations to the captive panda population were highly unbalanced, with Qionglai accounting for 52...
October 3, 2016: BMC Genetics
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