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https://www.readbyqxmd.com/read/28212100/homotopy-methods-based-on-l%C3%A2-norm-for-compressed-sensing
#1
Zhengshan Dong, Wenxing Zhu
This paper proposes two homotopy methods for solving the compressed sensing (CS) problem, which combine the homotopy technique with the iterative hard thresholding (IHT) method. The homotopy methods overcome the difficulty of the IHT method on the choice of the regularization parameter value, by tracing solutions of the regularized problem along a homotopy path. We prove that any accumulation point of the sequences generated by the proposed homotopy methods is a feasible solution of the problem. We also show an upper bound on the sparsity level for each solution of the proposed methods...
February 15, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28211795/a-murine-model-of-a-novel-surgical-architecture-for-proprioceptive-muscle-feedback-and-its-potential-application-to-control-of-advanced-limb-prostheses
#2
Tyler R Clites, Matthew Carty, Shriya Srinivasan, Anthony Zorzos, Hugh Herr
<i>Objective:</i> Proprioceptive mechanisms play a critical role in both reflexive and volitional lower extremity control. Significant strides have been made in the development of bionic limbs that are capable of bi-directional communication with the peripheral nervous system, but none of these systems have been capable of providing physiologically-relevant muscle-based proprioceptive feedback through natural neural pathways. In this study, we present the Agonist-antagonist Myoplastic Interface (AMI), a surgical approach with the capacity to provide graded kinesthetic feedback from a prosthesis through mechanical activation of native mechanoreceptors within residual agonist-antagonist muscle pairs...
February 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28210235/clinical-case-studies-in-psychoanalytic-and-psychodynamic-treatment
#3
REVIEW
Jochem Willemsen, Elena Della Rosa, Sue Kegerreis
This manuscript provides a review of the clinical case study within the field of psychoanalytic and psychodynamic treatment. The method has been contested for methodological reasons and because it would contribute to theoretical pluralism in the field. We summarize how the case study method is being applied in different schools of psychoanalysis, and we clarify the unique strengths of this method and areas for improvement. Finally, based on the literature and on our own experience with case study research, we come to formulate nine guidelines for future case study authors: (1) basic information to include, (2) clarification of the motivation to select a particular patient, (3) information about informed consent and disguise, (4) patient background and context of referral or self-referral, (5) patient's narrative, therapist's observations and interpretations, (6) interpretative heuristics, (7) reflexivity and counter-transference, (8) leaving room for interpretation, and (9) answering the research question, and comparison with other cases...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28208735/probabilistic-neighborhood-based-data-collection-algorithms-for-3d-underwater-acoustic-sensor-networks
#4
Guangjie Han, Shanshan Li, Chunsheng Zhu, Jinfang Jiang, Wenbo Zhang
Marine environmental monitoring provides crucial information and support for the exploitation, utilization, and protection of marine resources. With the rapid development of information technology, the development of three-dimensional underwater acoustic sensor networks (3D UASNs) provides a novel strategy to acquire marine environment information conveniently, efficiently and accurately. However, the specific propagation effects of acoustic communication channel lead to decreased successful information delivery probability with increased distance...
February 8, 2017: Sensors
https://www.readbyqxmd.com/read/28208498/coarsening-and-persistence-in-a-one-dimensional-system-of-orienting-arrowheads-domain-wall-kinetics-with-a-b%C3%A2-0
#5
Mahendra D Khandkar, Robin Stinchcombe, Mustansir Barma
We demonstrate the large-scale effects of the interplay between shape and hard-core interactions in a system with left- and right-pointing arrowheads <> on a line, with reorientation dynamics. This interplay leads to the formation of two types of domain walls, >< (A) and <> (B). The correlation length in the equilibrium state diverges exponentially with increasing arrowhead density, with an ordered state of like orientations arising in the limit. In this high-density limit, the A domain walls diffuse, while the B walls are static...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208387/network-clustering-and-community-detection-using-modulus-of-families-of-loops
#6
Heman Shakeri, Pietro Poggi-Corradini, Nathan Albin, Caterina Scoglio
We study the structure of loops in networks using the notion of modulus of loop families. We introduce an alternate measure of network clustering by quantifying the richness of families of (simple) loops. Modulus tries to minimize the expected overlap among loops by spreading the expected link usage optimally. We propose weighting networks using these expected link usages to improve classical community detection algorithms. We show that the proposed method enhances the performance of certain algorithms, such as spectral partitioning and modularity maximization heuristics, on standard benchmarks...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28203659/connectivity-dependence-of-fano-resonances-in-single-molecules
#7
Ali K Ismael, Iain Grace, Colin J Lambert
Using a first principles approach combined with analysis of heuristic tight-binding models, we examine the connectivity dependence of two forms of quantum interference in single molecules. Based on general arguments, Fano resonances are shown to be insensitive to connectivity, while Mach-Zehnder-type interference features are shown to be connectivity dependent. This behaviour is found to occur in molecular wires containing anthraquinone units, in which the pendant carbonyl groups create Fano resonances, which coexist with multiple-path quantum interference features...
February 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28199172/behavioral-phenotyping-assays-for-genetic-mouse-models-of-neurodevelopmental-neurodegenerative-and-psychiatric-disorders
#8
Stacey J Sukoff Rizzo, Jacqueline N Crawley
Animal models offer heuristic research tools to understand the causes of human diseases and to identify potential treatments. With rapidly evolving genetic engineering technologies, mutations identified in a human disorder can be generated in the mouse genome. Phenotypic outcomes of the mutation are then explicated to confirm hypotheses about causes and to discover effective therapeutics. Most neurodevelopmental, neurodegenerative, and psychiatric disorders are diagnosed primarily by their prominent behavioral symptoms...
February 8, 2017: Annual Review of Animal Biosciences
https://www.readbyqxmd.com/read/28197092/bci-control-of-heuristic-search-algorithms
#9
Marc Cavazza, Gabor Aranyi, Fred Charles
The ability to develop Brain-Computer Interfaces (BCI) to Intelligent Systems would offer new perspectives in terms of human supervision of complex Artificial Intelligence (AI) systems, as well as supporting new types of applications. In this article, we introduce a basic mechanism for the control of heuristic search through fNIRS-based BCI. The rationale is that heuristic search is not only a basic AI mechanism but also one still at the heart of many different AI systems. We investigate how users' mental disposition can be harnessed to influence the performance of heuristic search algorithm through a mechanism of precision-complexity exchange...
2017: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/28195028/academic-judgments-under-uncertainty-a-study-of-collective-anchoring-effects-in-swedish-research-council-panel-groups
#10
Lambros Roumbanis
This article focuses on anchoring effects in the process of peer reviewing research proposals. Anchoring effects are commonly seen as the result of flaws in human judgment, as cognitive biases that stem from specific heuristics that guide people when they involve their intuition in solving a problem. Here, the cognitive biases will be analyzed from a sociological point of view, as interactional and aggregated phenomena. The article is based on direct observations of ten panel groups evaluating research proposals in the natural and engineering sciences for the Swedish Research Council...
February 2017: Social Studies of Science
https://www.readbyqxmd.com/read/28192674/designing-visual-aids-that-promote-risk-literacy
#11
Rocio Garcia-Retamero, Edward T Cokely
Background Effective risk communication is essential for informed decision making. Unfortunately, many people struggle to understand typical risk communications because they lack essential decision-making skills. Objective The aim of this study was to review the literature on the effect of numeracy on risk literacy, decision making, and health outcomes, and to evaluate the benefits of visual aids in risk communication. Method We present a conceptual framework describing the influence of numeracy on risk literacy, decision making, and health outcomes, followed by a systematic review of the benefits of visual aids in risk communication for people with different levels of numeracy and graph literacy...
February 1, 2017: Human Factors
https://www.readbyqxmd.com/read/28189037/how-the-twain-can-meet-prospect-theory-and-models-of-heuristics-in-risky-choice
#12
Thorsten Pachur, Renata S Suter, Ralph Hertwig
Two influential approaches to modeling choice between risky options are algebraic models (which focus on predicting the overt decisions) and models of heuristics (which are also concerned with capturing the underlying cognitive process). Because they rest on fundamentally different assumptions and algorithms, the two approaches are usually treated as antithetical, or even incommensurable. Drawing on cumulative prospect theory (CPT; Tversky & Kahneman, 1992) as the currently most influential instance of a descriptive algebraic model, we demonstrate how the two modeling traditions can be linked...
February 8, 2017: Cognitive Psychology
https://www.readbyqxmd.com/read/28188581/use-of-the-recognition-heuristic-depends-on-the-domain-s-recognition-validity-not-on-the-recognition-validity-of-selected-sets-of-objects
#13
Rüdiger F Pohl, Martha Michalkiewicz, Edgar Erdfelder, Benjamin E Hilbig
According to the recognition-heuristic theory, decision makers solve paired comparisons in which one object is recognized and the other not by recognition alone, inferring that recognized objects have higher criterion values than unrecognized ones. However, success-and thus usefulness-of this heuristic depends on the validity of recognition as a cue, and adaptive decision making, in turn, requires that decision makers are sensitive to it. To this end, decision makers could base their evaluation of the recognition validity either on the selected set of objects (the set's recognition validity), or on the underlying domain from which the objects were drawn (the domain's recognition validity)...
February 10, 2017: Memory & Cognition
https://www.readbyqxmd.com/read/28187628/an-analytical-review-of-halffter-s-mexican-transition-zone-and-its-relevance-for-evolutionary-biogeography-ecology-and-biogeographical-regionalization
#14
Gonzalo Halffter, Juan J Morrone
The Mexican transition zone (MTZ) is the complex area where the Neotropical and Nearctic biotas overlap, including south-western United States, Mexico and a large part of Central America extending to the Nicaraguan lowlands. In a strict sense, it corresponds to the mountain highlands of Mexico, Guatemala, Honduras, El Salvador and Nicaragua. We review Halffter's theory explaining the biotic evolution of the MTZ, including the description and discussion of the distributional patterns and cenocrons recognized within it...
January 25, 2017: Zootaxa
https://www.readbyqxmd.com/read/28186889/asynchronous-event-based-fourier-analysis
#15
Quentin Sabatier, Sio-Hoi Ieng, Ryad B Benosman
This paper introduces a method to compute the FFT of a visual scene at a high temporal precision of around 1 μs output from an asynchronous event-based camera. Event-based cameras allow to go beyond the widespread and ingrained belief that acquiring series of images at some rate is a good way to capture visual motion. Each pixel adapts its own sampling rate to the visual input it receives and defines the timing of its own sampling points in response to its visual input by reacting to changes of the amount of incident light...
February 6, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28186032/usability-and-ehealth-literacy-evaluation-of-a-mobile-health-application-prototype-to-track-diagnostic-imaging-examinations
#16
Janessa Griffith, Helen Monkman
In the absence of a pan-Canadian electronic health record, unnecessary duplicate diagnostic imaging (DI) examinations are sometimes ordered when a physician is not aware of prior DI or prior DI is not available. Research suggests that physicians may ask their patient to recall their DI history; however, patient recall of DI can be unreliable. As a potential solution, a patient-facing mobile health application (app) prototype was developed for users to record their DI. The app was designed to be usable and inclusive to users of all health literacy levels...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28186028/deriving-a-set-of-privacy-specific-heuristics-for-the-assessment-of-phrs-personal-health-records
#17
Riccardo F Furano, Andre Kushniruk, Jeff Barnett
With the emergence of personal health record (PHR) platforms becoming more widely available, this research focused on the development of privacy heuristics to assess PHRs regarding privacy. Existing sets of heuristics are typically not application specific and do not address patient-centric privacy as a main concern prior to undergoing PHR procurement. A set of privacy specific heuristics were developed based on a scoping review of the literature. An internet-based commercially available, vendor specific PHR application was evaluated using the derived set of privacy specific heuristics...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28185578/fast-ancestral-gene-order-reconstruction-of-genomes-with-unequal-gene-content
#18
Pedro Feijão, Eloi Araujo
BACKGROUND: During evolution, genomes are modified by large scale structural events, such as rearrangements, deletions or insertions of large blocks of DNA. Of particular interest, in order to better understand how this type of genomic evolution happens, is the reconstruction of ancestral genomes, given a phylogenetic tree with extant genomes at its leaves. One way of solving this problem is to assume a rearrangement model, such as Double Cut and Join (DCJ), and find a set of ancestral genomes that minimizes the number of events on the input tree...
November 11, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28185565/reconstructing-ancestral-gene-orders-with-duplications-guided-by-synteny-level-genome-reconstruction
#19
Ashok Rajaraman, Jian Ma
BACKGROUND: Reconstructing ancestral gene orders in the presence of duplications is important for a better understanding of genome evolution. Current methods for ancestral reconstruction are limited by either computational constraints or the availability of reliable gene trees, and often ignore duplications altogether. Recently, methods that consider duplications in ancestral reconstructions have been developed, but the quality of reconstruction, counted as the number of contiguous ancestral regions found, decreases rapidly with the number of duplicated genes, complicating the application of such approaches to mammalian genomes...
November 11, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28185553/removing-duplicate-reads-using-graphics-processing-units
#20
Andrea Manconi, Marco Moscatelli, Giuliano Armano, Matteo Gnocchi, Alessandro Orro, Luciano Milanesi
BACKGROUND: During library construction polymerase chain reaction is used to enrich the DNA before sequencing. Typically, this process generates duplicate read sequences. Removal of these artifacts is mandatory, as they can affect the correct interpretation of data in several analyses. Ideally, duplicate reads should be characterized by identical nucleotide sequences. However, due to sequencing errors, duplicates may also be nearly-identical. Removing nearly-identical duplicates can result in a notable computational effort...
November 8, 2016: BMC Bioinformatics
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