Relevant bibliographies by topics / Multidimensional symbol test

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Academic literature on the topic 'Multidimensional symbol test'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Multidimensional symbol test"

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Krch, Denise, Anthony Lequerica, Juan Carlos Arango-Lasprilla, Heather L. Rogers, John DeLuca, and Nancy D. Chiaravalloti. "The Multidimensional Influence of Acculturation on Digit Symbol-Coding and Wisconsin Card Sorting Test in Hispanics." Clinical Neuropsychologist 29, no. 5 (July 4, 2015): 624–38. http://dx.doi.org/10.1080/13854046.2015.1063696.

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Goldman, Myla D., Nicholas G. LaRocca, Richard A. Rudick, Lynn D. Hudson, Peter S. Chin, Gordon S. Francis, Adam Jacobs, et al. "Evaluation of multiple sclerosis disability outcome measures using pooled clinical trial data." Neurology 93, no. 21 (October 22, 2019): e1921-e1931. http://dx.doi.org/10.1212/wnl.0000000000008519.

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ObjectiveWe report analyses of a pooled database by the Multiple Sclerosis Outcome Assessments Consortium to evaluate 4 proposed components of a multidimensional test battery.MethodsStandardized data on 12,776 participants, comprising demographics, multiple sclerosis disease characteristics, Expanded Disability Status Scale (EDSS) score, performance measures, and Short Form–36 Physical Component Summary (SF-36 PCS), were pooled from control and treatment arms of 14 clinical trials. Analyses of Timed 25-Foot Walk (T25FW), 9-Hole Peg Test (9HPT), Low Contrast Letter Acuity (LCLA), and Symbol Digit Modalities Test (SDMT) included measurement properties; construct, convergent, and known group validity; and longitudinal performance of the measures individually and when combined into a multidimensional test battery relative to the EDSS and SF-36 to determine sensitivity and clinical meaningfulness.ResultsThe performance measures had excellent test–retest reliability and showed expected differences between subgroups based on disease duration and EDSS level. Progression rates in detecting time to 3-month confirmed worsening were lower for T25FW and 9HPT compared to EDSS, while progression rates for LCLA and SDMT were similar to EDSS. When the 4 measures were analyzed as a multidimensional measure rather than as individual measures, progression on any one performance measure was more sensitive than the EDSS. Worsening on the performance measures analyzed individually or as a multidimensional test battery was associated with clinically meaningful SF-36 PCS score worsening, supporting clinical meaningfulness of designated performance test score worsening.ConclusionThese results support the use of the 4 proposed performance measures, individually or combined into a multidimensional test battery as study outcome measures.
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Jacobs, Kate E., and Shane Costello. "An Initial Investigation of an Australian Adaptation of the Multidimensional Aptitude Battery — II." Australian Educational and Developmental Psychologist 30, no. 1 (July 2013): 84–102. http://dx.doi.org/10.1017/edp.2013.9.

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The Cattell-Horn-Carroll (CHC) theory of cognitive abilities has helped advance understanding regarding the relations between specific cognitive abilities and academic achievement in definite domains. However, questions over the generalisability of this research, as well the moderating effect age has on the strength of cognitive-achievement relations, means that further research is needed. This study therefore investigated the capacity for using the Multidimensional Aptitude Battery — II (MAB-II), a group-administered test of cognitive ability, to further CHC-driven research in Australia. After adapting the MAB-II verbal subtests to be suitable for use with an Australian sample, 179 adults completed the measure. Results were analaysed using both classical test and item response theory. Findings indicated that despite the MAB-II not being developed using CHC theory, the structure of the test appeared to conform to this model. Further, while an adequate number of subtests hypothesised to measure the CHC domains of Comprehension-knowledge (Gc) and Visual processing (Gv) were found to perform well psychometrically, the Arithmetic, Picture Arrangement, and Digit Symbol subtests returned questionable results. Given the advantages a group-administered test of CHC cognitive abilities would provide to CHC-driven research in Australia, suggestions for future modifications and adaptations of the test are provided.
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Kimberley, Allen-Philbey, Turner Ben, Yildiz Ozlem, Mathews Joela, Giovannoni Gavin, and Schmierer Klaus. "WED 163 Monitoring for outcome assessment and trial recruitment of pwms." Journal of Neurology, Neurosurgery & Psychiatry 89, no. 10 (September 13, 2018): A20.2—A20. http://dx.doi.org/10.1136/jnnp-2018-abn.72.

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BackgroundThe time constraint of NHS care is difficult to reconcile with the comprehensive neurological assessment required to complete a mandatory EDSS for NHS England funded disease modifying treatment of people with multiple sclerosis (pwMS). We report our experience with parametric data collection in order to (i) inform DMT decisions and (ii) improve characterisation for recruitment of pwMS in clinical trials.MethodsWe implemented a battery consisting of the symbol digit modality test, 9-hole-peg-test, 25ft walking test and ABILHAND. pwMS were encouraged to sign up to the MS Register to record patient reported outcomes and ‘webEDSS’. Data from the MS Register and BartsMS Database were electronically linked.Results334 pwMS at different disease stages (EDSS 0–8.5) have been assessed at least annually. Of these, 64% had a relapsing and 36% a progressive disease course. Clinically meaningful data was obtained and displayed in an engaging portal for interpretation by the clinical team and pwMS.ConclusionIt’s feasible to implement multidimensional monitoring of pwMS to benefit (i) management of pwMS and (ii) trial recruitment, particularly for pwMS with EDSS >6.5. Longitudinal follow-up and data analysis is underway. Standardisation of a simple, regularly collected, dataset may improve performance assessment between centres.
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Kim, Sonya, Vance Zemon, Joseph F. Rath, MaryAnn Picone, Elizabeth S. Gromisch, Heather Glubo, Lucia Smith-Wexler, and Frederick W. Foley. "Screening Instruments for the Early Detection of Cognitive Impairment in Patients with Multiple Sclerosis." International Journal of MS Care 19, no. 1 (January 1, 2017): 1–10. http://dx.doi.org/10.7224/1537-2073.2015-001.

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Background: Cognitive impairments are common in individuals with MS and adversely affect functioning. Early detection of cognitive impairment, therefore, would enable earlier, and possibly more effective, treatment. We sought to compare self-reports with a short neuropsychological test as possible screening tools for cognitive impairment. Methods: One hundred patients with MS were tested with the Minimal Assessment of Cognitive Function in Multiple Sclerosis; z scores were used to derive the Cognitive Index (CI). Receiver operator characteristic curve analyses were performed, with criteria for impairment set at −1.5 and −2.0 SD below the mean. Scores from two self-reports (the Multiple Sclerosis Neuropsychological Screening Questionnaire–Patient Version and the Behavior Rating Inventory of Executive Function–Adult Version [BRIEF-A]) and a neuropsychological test (the Symbol Digit Modalities Test [SDMT]) were entered as test variables. Exploratory regression analyses were conducted with 1) CI and self-reports and 2) CI and the Problem-Solving Inventory (PSI). Results: Classification accuracy was high or moderately high for SDMT when the criterion was −2.0 or −1.5 SD, respectively, but low for the self-reports. Hierarchical linear regression showed that the SDMT alone was the best predictor of cognitive impairment; adding the self-reports did not improve the model. Exploratory analyses indicated that certain self-reports (BRIEF-A, PSI) provided some explanatory power in separate models. Conclusions: The SDMT is a more accurate screening tool for cognitive impairment; however, self-reports provide additional information and may complement objective testing. Results suggest that screening for cognitive impairment may require a multidimensional approach.
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Gordin, V. A. "COMPACT FINITE-DIFFERENCE SCHEMES FOR WEAKLY NON-LINEAR PROBLEMS AND BOUNDARY CONDITIONS IMITATING CAUCHY PROBLEM." XXII workshop of the Council of nonlinear dynamics of the Russian Academy of Sciences 47, no. 1 (April 30, 2019): 32–37. http://dx.doi.org/10.29006/1564-2291.jor-2019.47(1).9.

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Compact finite-difference schemes are well known and provide high accuracy order for differential equation with constant coefficients. Algorithms for constructing compact schemes of the 4-th order for boundary value problems with variable (smooth or jump) coefficient are developed. For the diffusion equations with a smooth variable coefficient and the Levin – Leontovich equation, compact finite-difference schemes are also constructed and their 4-th order is experimentally confirmed. The method of constructing compact schemes of the 4-th order can be generalized to partial differential equations and systems with weak nonlinearity, for example, for the Fisher – Kolmogorov – Petrovsky – Piskunov equation, for the nonlinear Schrödinger equation or for the Fitzhugh – Nagumo system. For such nonlinear problems, a combination of simple explicit schemes and relaxation is used. Richardson’s extrapolation increases the order of the circuits to the 6-th. To approximate multidimensional problems with discontinuous coefficients, for example, the two-dimensional stationary diffusion equation in inhomogeneous media, it is necessary to estimate the possible asymptotics of solutions in the vicinity of the boundary line’s breaks. To do this, we use generalized eigen-functions in the angle, which can be used as a set of test functions and build compact difference schemes approximating the problem on triangular grids with high order of accuracy. The asymptotics along the radius of these generalized eigen-functions (in polar coordinates in the vicinity of the vertex of the angle) have irrational indices which can be found from a special dispersion equation and which determine the indices of the corresponding Bessel functions along the radius. For a number of difference schemes approximating the most important evolutionary equations of mathematical physics, it is possible to construct special boundary conditions imitating the Cauchy problem (ICP) on the whole space. These conditions depend not only on the original equation, but also on the type of the difference scheme, and even on the coefficients of the corresponding differential equation. The ICP conditions are determined with accuracy to a gauge. But the choice of this gauge turns out to be essential with numerical implementation. The role of rational approximations of the Pade – Hermite type of the symbol of the corresponding pseudo-differential operator is important. Examples of movie solutions of problems with ICP conditions for various finite-difference schemes approximating the basic mathematical physics equations, see https://cs.hse.ru/mmsg/transbounds. The study was realized within the framework of the Academic Fund Program at the National Research University – Higher School of Economics (HSE) in 2016–2017 (grant No. 16-05-0069) and by the Russian Academic Excellence Project «5–100».
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Udrescu, Silviu-Marian, and Max Tegmark. "AI Feynman: A physics-inspired method for symbolic regression." Science Advances 6, no. 16 (April 2020): eaay2631. http://dx.doi.org/10.1126/sciadv.aay2631.

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A core challenge for both physics and artificial intelligence (AI) is symbolic regression: finding a symbolic expression that matches data from an unknown function. Although this problem is likely to be NP-hard in principle, functions of practical interest often exhibit symmetries, separability, compositionality, and other simplifying properties. In this spirit, we develop a recursive multidimensional symbolic regression algorithm that combines neural network fitting with a suite of physics-inspired techniques. We apply it to 100 equations from the Feynman Lectures on Physics, and it discovers all of them, while previous publicly available software cracks only 71; for a more difficult physics-based test set, we improve the state-of-the-art success rate from 15 to 90%.
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Kovačević, Vlaho, Krunoslav Malenica, and Igor Jelaska. "Attitudes of Students of the University of Split towards Asylum Seekers as a Realistic and a Symbolic Threat in the Context of Risk Society." Nova prisutnost XVIII, no. 2 (July 21, 2020): 245–58. http://dx.doi.org/10.31192/np.18.2.2.

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The aim of this research was to analyze the attitudes of the student population at the University of Split towards asylum seekers as a multidimensional threat to the community in the context of risk society. We have approached the empirical data collection within a multidimensional theoretical framework. The first part of our subject interest is the theoretical direction of reflexive modernity and risk society proposed by Ulrich Beck, while the second part deals with the theoretical explanations regarding the perception of asylum seekers as a threat. In accordance with the research objective, a stratified sample of 286 Croatian students from the University of Split expressed their attitudes toward asylum seekers using a scale. Reliability of the used questionnaire was assessed by using test and retest method. Results indicate that students perceived asylum seekers as a statistically significantly more realistic than a symbolic threat. The respondents thus recognize one, equally important yet diffuse phenomenon showing interest among the respondents for the rational choice but also for respecting the individual’s subjectivity.
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KUZNETSOV, YU A. "PRACTICAL COMPUTATION OF NORMAL FORMS ON CENTER MANIFOLDS AT DEGENERATE BOGDANOV–TAKENS BIFURCATIONS." International Journal of Bifurcation and Chaos 15, no. 11 (November 2005): 3535–46. http://dx.doi.org/10.1142/s0218127405014209.

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Simple computational formulas are derived for the two-, three-, and four-order coefficients of the smooth normal form on the center manifold at the Bogdanov–Takens (nonsemisimple double-zero) bifurcation for n-dimensional systems with arbitrary n ≥ 2. These formulas are equally suitable for both symbolic and numerical evaluation and allow one to classify all codim 3 Bogdanov–Takens bifurcations in generic multidimensional ODEs. They are also applicable to systems with symmetries. We perform no preliminary linear transformations but use only critical (generalized) eigenvectors of the linearization matrix and its transpose. The derivation combines the approximation of the center manifold with the normalization on it. Three known models are used as test examples to demonstrate advantages of the method.
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Uenal, Fatih. "Disentangling Islamophobia: The differential effects of symbolic, realistic, and terroristic threat perceptions as mediators between social dominance orientation and Islamophobia." Journal of Social and Political Psychology 4, no. 1 (April 7, 2016): 66–90. http://dx.doi.org/10.5964/jspp.v4i1.463.

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The aim of this paper is threefold. First, based on ongoing theoretical discussions on the dimensionality of Islamophobia, this study analyzes whether Islamophobia empirically constitutes a one-dimensional construct or rather a multidimensional construct consisting of anti-Muslim prejudice and anti-Islam sentiment. Second, the effects of symbolic, realistic, and terroristic (safety) threats on Islamophobia were analyzed concurrently. Finally, within the framework of the revised Integrated Threat Theory (Stephan & Renfro, 2002), and in order to test the mediating effect of threats, SDO is tested as an antecedent of perceived threat and Islamophobia. Respondents from Berlin (N = 355) participated in an online survey. The results indicate that Islamophobia empirically constitutes a two-dimensional phenomenon, consisting of anti-Muslim and anti-Islam sentiment. Whereas symbolic threat is related to both types of Islamophobia, realistic threat is associated only with anti-Muslim prejudice, and terroristic threat is associated only with anti-Islam sentiment. Finally, the results indicate that the relationship between SDO and both dimensions of Islamophobia is mediated by threats. Symbolic threats mediate the relationships between SDO and both dimensions of Islamophobia. Realistic threats mediate the relationship between SDO and anti-Muslim prejudice and terroristic threats between SDO and anti-Islam sentiment.
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Conference papers on the topic "Multidimensional symbol test"

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Cotta, Renato M., Joa˜o N. N. Quaresma, Leandro A. Sphaier, and Carolina P. Naveira-Cotta. "Unified Integral Transform Approach in the Hybrid Solution of Multidimensional Nonlinear Convection-Diffusion Problems." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22396.

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The present work summarizes the theory and describes the algorithm related to the construction of an open source mixed symbolic-numerical computational code named UNIT — Unified Integral Transforms, that provides a development platform for finding solutions of linear and nonlinear partial differential equations via integral transforms. The reported research was performed by making use of the symbolic computational system Mathematica v.7.0 and the hybrid numerical-analytical methodology Generalized Integral Transform Technique — GITT. The aim here is to illustrate the robust and precision controlled simulation of multidimensional nonlinear transient convection-diffusion problems, while providing a brief introduction of this open source code. Test cases are selected based on nonlinear multi-dimensional formulations of the Burgers equations, with the establishment of reference results for specific numerical values of the governing parameters. Special aspects and computational behaviors of the algorithm are then discussed, demonstrating the implemented possibilities within the present version of the UNIT code.
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