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https://www.readbyqxmd.com/read/28806717/efficient-construction-of-sparse-radial-basis-function-neural-networks-using-l1-regularization
#1
Xusheng Qian, He Huang, Xiaoping Chen, Tingwen Huang
This paper investigates the construction of sparse radial basis function neural networks (RBFNNs) for classification problems. An efficient two-phase construction algorithm (which is abbreviated as TPCLR1 for simplicity) is proposed by using L1 regularization. In the first phase, an improved maximum data coverage (IMDC) algorithm is presented for the initialization of RBF centers and widths. Then a specialized Orthant-Wise Limited-memory Quasi-Newton (sOWL-QN) method is employed to perform simultaneous network pruning and parameter optimization in the second phase...
July 27, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28795493/-molecularly-imprinted-chromatography-fails-to-distinguish-homeopatic-remedy-from-placebo
#2
Roman Kaliszan, Małgorzata Waszczuk-Jankowska, Danuta Siluk, Bartosz Wielgomas
It was sensation when Dr. J. Beneviste reported alleged experimental biological evidence of the water memory effect (E. Dayenas et al. Nature 333, 816-818, 1988; https://doi.org/10.1038/333816a0). These experiments have never been reproduced in controlled conditions, however. Instead, the hypothesis that water can be imprinted with the memory of past solutes was ruled out (J. Maddox et al. Nature 334, 287-290, 1988; https://doi.org/10.1038/334287a0). At present, so-called "molecular imprinting" is a technology of preparing polymer matrices as affinity-based analyte separation media (J...
August 10, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28782968/the-longevity-of-statistical-learning-when-infant-memory-decays-isolated-words-come-to-the-rescue
#3
Ferhat Karaman, Jessica F Hay
Research over the past 2 decades has demonstrated that infants are equipped with remarkable computational abilities that allow them to find words in continuous speech. Infants can encode information about the transitional probability (TP) between syllables to segment words from artificial and natural languages. As previous research has tested infants immediately after familiarization, infants' ability to retain sequential statistics beyond the immediate familiarization context remains unknown. Here, we examine infants' memory for statistically defined words 10 min after familiarization with an Italian corpus...
August 7, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28779927/combining-music-and-reminiscence-therapy-interventions-for-wellbeing-in-elderly-populations-a-systematic-review
#4
REVIEW
Lauren Istvandity
Both music therapy and reminiscence therapy are currently being used to increase aspects of wellbeing in older people, including those with memory diseases such as dementia, as alternatives to pharmacological treatments. There is growing evidence that combining these therapies in a focused way would provide unique wellbeing outcomes for this population. This review aims to report on the existing intervention studies that utilize both music and reminiscence activities in equal measure in elderly adult populations...
August 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/28774220/prospective-memory-impairment-in-multiple-sclerosis-a-review
#5
Isabelle Rouleau, Emmanuelle Dagenais, Alexandra Tremblay, Mélanie Demers, Élaine Roger, Céline Jobin, Pierre Duquette
OBJECTIVE: Multiple sclerosis (MS) is a progressive disease of the central nervous system affecting information processing speed, episodic memory, attention, and executive functions. MS patients also often report prospective memory (PM) failures that directly impact their functional autonomy, including professional and social life. The purpose of this paper was to review the literature concerning the assessment and remediation of PM deficits in MS. METHOD: The literature pertaining to PM impairment in MS was carefully reviewed using PubMed, PsyINFO, and Google Scholar, as well as cross-references from the articles published on this topic...
August 4, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28772793/an-energy-equivalent-d%C3%A2-%C2%BA-d-damage-model-with-enhanced-microcrack-closure-reopening-capabilities-for-cohesive-frictional-materials
#6
Miguel Cervera, Claudia Tesei
In this paper, an energy-equivalent orthotropic d⁺/d(-) damage model for cohesive-frictional materials is formulated. Two essential mechanical features are addressed, the damage-induced anisotropy and the microcrack closure-reopening (MCR) effects, in order to provide an enhancement of the original d⁺/d(-) model proposed by Faria et al. 1998, while keeping its high algorithmic efficiency unaltered. First, in order to ensure the symmetry and positive definiteness of the secant operator, the new formulation is developed in an energy-equivalence framework...
April 20, 2017: Materials
https://www.readbyqxmd.com/read/28765085/a-preregistered-direct-replication-attempt-of-the-retrieval-extinction-effect-in-cued-fear-conditioning-in-rats
#7
Laura Luyten, Tom Beckers
In 2009, Monfils and colleagues proposed a behavioral procedure that was said to result in a permanent attenuation of a previously established fear memory, thereby precluding a possible return of fear after extinction (Monfils, Cowansage, Klann, & LeDoux, 2009). By presenting a single retrieval trial one hour before standard extinction training, they found an enduring reduction of fear. The retrieval-extinction procedure holds great clinical potential, particularly for anxiety patients, but the findings are not undisputed, and several conceptual replications have failed to reproduce the effect...
July 29, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28764000/direct-immersion-single-drop-micro-extraction-method-for-multi-class-pesticides-analysis-in-mango-using-gc-ms
#8
Norma S Pano-Farias, Silvia G Ceballos-Magaña, Roberto Muñiz-Valencia, Jose M Jurado, Ángela Alcázar, Ismael A Aguayo-Villarreal
Due the negative effects of pesticides on environment and human health, more efficient and environmentally friendly methods are needed. In this sense, a simple, fast, free from memory effects and economical direct-immersion single drop micro-extraction (SDME) method and GC-MS for multi-class pesticides determination in mango samples was developed. Sample pre-treatment using ultrasound-assisted solvent extraction and factors affecting the SDME procedure (extractant solvent, drop volume, stirring rate, ionic strength, time, pH and temperature) were optimized using factorial experimental design...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28759840/an-experimental-canine-patent-ductus-arteriosus-occlusion-device-based-on-shape-memory-polymer-foam-in-a-nitinol-cage
#9
Mark A Wierzbicki, Sarah B Raines, Sonya G Gordon, John C Criscione, Ashley B Saunders, Scott Birch, Bradley Due, Brandis Keller, Landon D Nash, Matthew W Miller, Duncan J Maitland
Patent ductus arteriosus (PDA) is a congenital cardiovascular defect in which a fetal connection between the aorta and pulmonary artery does not spontaneously close shortly after birth. If left uncorrected serious complications and even death can occur. Surgical ligation is the traditional treatment method; however, it is an invasive procedure, that motivates development of a minimally invasive option. Shape memory polymer (SMP) foams are unique materials that hold promise in the field of minimally invasive occlusion devices...
July 25, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28759268/relationship-between-neuropsychological-tests-and-driver-s-licence-renewal-tests-in-parkinson-s-disease
#10
Dolors Badenes, Maite Garolera, Laura Casas, Juan Carlos Cejudo, Silvia Zaragoza, Noemi Calzado, Miquel Aguilar
Objective To determine whether the standard Spanish driving test (ASDE test) was able to identify patients with Parkinson's disease (PD) at risk of unsafe driving, and to examine the relationship between the ASDE test and the UFOV as well as with a battery of neuropsychological tests in PD drivers. Methods Thirty-seven PD patients and 33 controls matched by age and education level were included in an observational study. All participants were active drivers and PD patients underwent study procedures after taking the medication in the "on" period...
July 31, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28755853/search-and-recovery-of-autobiographical-and-laboratory-memories-shared-and-distinct-neural-components
#11
Zachary A Monge, Erik A Wing, Jared Stokes, Roberto Cabeza
Functional neuroimaging evidence suggests that there are differences in the neural correlates of episodic memory for laboratory stimuli (laboratory memory) and for events from one's own life (autobiographical memory). However, this evidence is scarce and often confounded with differences in memory testing procedures. Here, we directly compared the neural mechanisms underlying the search and recovery of autobiographical and laboratory memories while minimizing testing differences. Before scanning, participants completed a laboratory memory encoding task in which they studied four-word "chains" spread across three word pairs...
July 26, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28751492/honeybees-in-a-virtual-reality-environment-learn-unique-combinations-of-colour-and-shape
#12
Claire Rusch, Eatai Roth, Clément Vinauger, Jeffrey A Riffell
Honeybees are well-known models for the study of visual learning and memory. Whereas most of our knowledge of learned responses comes from experiments using free-flying bees, a tethered preparation would allow fine-scale control of the visual stimuli as well as accurate characterization of the learned responses. Unfortunately, conditioning procedures using visual stimuli in tethered bees have been limited in their efficacy. Here in this study, using a novel virtual reality environment and a differential training protocol in tethered walking bees, we show that the majority of honeybees learn visual stimuli, and need only six paired training trials to learn the stimulus...
July 27, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28749789/surgical-approach-to-piles-at-risk-of-severe-postoperative-pain-tricks-and-tips
#13
Domenico Tuscano, Linda D'Amore, Fabio Gaj, Paolo Bruzzone, Elena Annesi, Daniele Ceccarelli, Paolox Paolo Negro, Maria Romana Grimaldi, Francesco Gossetti
AIM: Aim of the present study is to propose a clinic-therapeutic course for the treatment of hemorrhoidal disease able to combine radical anatomic surgery with a painless postoperative path. MATERIAL OF STUDY: The present study is based on the evaluation of 20 selected patients who underwent radical hemorrhoidectomy for very high grade hemorrhoidal disease. The clinical course was characterized by careful bowel cleansing, hemorrhoidectomy according to Milligan-Morgan using LigaSure, intraoperative perianal infiltration of Ropivacaine and postoperative use of analgesic drugs...
July 24, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28749354/real-time-cloth-rendering-with-fiber-level-detail
#14
Kui Wu, Cem Yuksel
Modeling cloth with fiber-level geometry can produce highly realistic details. However, rendering fiber-level cloth models not only has a high memory cost but it also has a high computation cost even for offline rendering applications. In this paper we present a real-time fiber-level cloth rendering method for current GPUs. Our method procedurally generates fiber-level geometric details on-the-fly using yarn-level control points for minimizing the data transfer to the GPU. We also reduce the rasterization operations by collectively representing the fibers near the center of each ply that form the yarn structure...
July 26, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28744243/the-odyssey-of-dental-anxiety-from-prehistory-to-the-present-a-narrative-review
#15
REVIEW
Enrico Facco, Gastone Zanette
Dental anxiety (DA) can be considered as a universal phenomenon with a high prevalence worldwide; DA and pain are also the main causes for medical emergencies in the dental office, so their prevention is an essential part of patient safety and overall quality of care. Being DA and its consequences closely related to the fight-or-flight reaction, it seems reasonable to argue that the odyssey of DA began way back in the distant past, and has since probably evolved in parallel with the development of fight-or-flight reactions, implicit memory and knowledge, and ultimately consciousness...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28744087/a-peek-into-the-future-of-radiology-using-big-data-applications
#16
Amit T Kharat, Shubham Singhal
Big data is extremely large amount of data which is available in the radiology department. Big data is identified by four Vs - Volume, Velocity, Variety, and Veracity. By applying different algorithmic tools and converting raw data to transformed data in such large datasets, there is a possibility of understanding and using radiology data for gaining new knowledge and insights. Big data analytics consists of 6Cs - Connection, Cloud, Cyber, Content, Community, and Customization. The global technological prowess and per-capita capacity to save digital information has roughly doubled every 40 months since the 1980's...
April 2017: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28735808/autoimmunity-and-its-association-with-regulatory-t-cells-and-b-cell-subsets-in-patients-with-common-variable-immunodeficiency
#17
G Azizi, H Abolhassani, F Kiaee, N Tavakolinia, H Rafiemanesh, R Yazdani, S A Mahdaviani, S Mohammadikhajehdehi, M Tavakol, V Ziaee, B Negahdari, J Mohammadi, A Mirshafiey, A Aghamohammadi
BACKGROUND: Common variable immunodeficiency (CVID) is one of the most prevalent symptomatic primary immunodeficiencies (PIDs), which manifests a wide clinical variability such as autoimmunity, as well as T cell and B cell abnormalities. METHODS: A total of 72 patients with CVID were enrolled in this study. Patients were evaluated for clinical manifestations and classified according to the presence or absence of autoimmune disease. We measured regulatory T cells (Tregs) and B-cell subsets using flow cytometry, as well as specific antibody response (SAR) to pneumococcal vaccine, autoantibodies and anti-IgA in patients...
July 20, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28734189/two-dimensional-modeling-of-elastic-wave-propagation-in-solids-containing-cracks-with-rough-surfaces-and-friction-part-i-theoretical-background
#18
Vladislav Aleshin, Steven Delrue, Andrey Trifonov, Olivier Bou Matar, Koen Van Den Abeele
Our study aims at the creation of a numerical toolbox that describes wave propagation in samples containing internal contacts (e.g. cracks, delaminations, debondings, imperfect intergranular joints) of known geometry with postulated contact interaction laws including friction. The code consists of two entities: the contact model and the solid mechanics module. Part I of the paper concerns the modeling of internal contacts (called cracks for brevity), while part II is related to the integration of the developed contact model into a solid mechanics module that allows the description of wave propagation processes...
July 13, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28734172/clear-evidence-for-item-limits-in-visual-working-memory
#19
Kirsten C S Adam, Edward K Vogel, Edward Awh
There is a consensus that visual working memory (WM) resources are sharply limited, but debate persists regarding the simple question of whether there is a limit to the total number of items that can be stored concurrently. Zhang and Luck (2008) advanced this debate with an analytic procedure that provided strong evidence for random guessing responses, but their findings can also be described by models that deny guessing while asserting a high prevalence of low precision memories. Here, we used a whole report memory procedure in which subjects reported all items in each trial and indicated whether they were guessing with each response...
July 19, 2017: Cognitive Psychology
https://www.readbyqxmd.com/read/28733358/pattern-analyses-reveal-separate-experience-based-fear-memories-in-the-human-right-amygdala
#20
Senne Braem, Jan De Houwer, Jelle Demanet, Kenneth S L Yuen, Raffael Kalisch, Marcel Brass
Learning fear via the experience of contingencies between a conditioned stimulus (CS) and an aversive unconditioned stimulus (US) is often assumed to be fundamentally different from learning fear via instructions. An open question is whether fear-related brain areas respond differently to experienced CS-US contingencies than to merely instructed CS-US contingencies. Here, we contrasted two experimental conditions where subjects were instructed to expect the same CS-US contingencies while only one condition was characterized by prior experience with the CS-US contingency...
July 21, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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