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Search Results: 1 - 10 of 326099 matches for " Joyce S. Sabari "
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Rasch Analysis of a New Hierarchical Scoring System for Evaluating Hand Function on the Motor Assessment Scale for Stroke
Joyce S. Sabari,Michelle Woodbury,Craig A. Velozo
Stroke Research and Treatment , 2014, DOI: 10.1155/2014/730298
Abstract: Objectives. (1) To develop two independent measurement scales for use as items assessing hand movements and hand activities within the Motor Assessment Scale (MAS), an existing instrument used for clinical assessment of motor performance in stroke survivors; (2) To examine the psychometric properties of these new measurement scales. Design. Scale development, followed by a multicenter observational study. Setting. Inpatient and outpatient occupational therapy programs in eight hospital and rehabilitation facilities in the United States and Canada. Participants. Patients receiving stroke rehabilitation following left (52%) or right (48%) cerebrovascular accident; mean age 64.2 years (sd 15); median 1 month since stroke onset. Intervention. Not applicable. Main Outcome Measures. Data were tested for unidimensionality and reliability, and behavioral criteria were ordered according to difficulty level with Rasch analysis. Results. The new scales assessing hand movements and hand activities met Rasch expectations of unidimensionality and reliability. Conclusion. Following a multistep process of test development, analysis, and refinement, we have redesigned the two scales that comprise the hand function items on the MAS. The hand movement scale contains an empirically validated 10-behavior hierarchy and the hand activities item contains an empirically validated 8-behavior hierarchy. 1. Introduction To maximize functional outcomes, occupational therapists and physical therapists assess and provide interventions related to gross mobility, sitting and standing balance, ambulation, and motor performance of the arm and hand. Rehabilitation clinicians use standardized assessment tools on a daily basis to determine patients’ baseline performance, guide treatment planning, monitor ongoing progress, establish recommendations for follow-up care after discharge, and evaluate the effectiveness of interventions. The Motor Assessment Scale (MAS) [1] provides rehabilitation clinicians and researchers with a single, quickly administered assessment of eight categories of poststroke motor function: supine-to-sidelying; supine-to-sitting; balanced sitting; sitting-to-standing; walking; upper arm function; hand movements; and advanced hand activities. Each category is scored on a 7-point scale (0–6), based on a person’s ability to perform specific tasks. The tasks in each category are intended to be hierarchical; that is, the ability to accomplish task 6 implies the ability to accomplish tasks 1 through 5. This arrangement reduces administration time and increases its appeal to
1-(2-Carboxyethyl)-5-ethyl-2-methylpyridinium chloride
V. Sabari,G. Kalaiselvi,S. Balasubramanian,S. Aravindhan
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812038809
Abstract: In the crystal structure of the title salt, C11H16NO2+·Cl , the cations and anions are linked by O—H...Cl hydrogen bonds. The structure is further stabilized by weak C—H...Cl hydrogen bonds.
(2E,2′E)-Dimethyl 2,2′-[(phenylazanediyl)bis(methylene)]bis(3-phenylacrylate)
V. Sabari,R. Selvakumar,M. Bakthadoss,S. Aravindhan
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812029042
Abstract: The C=C double bonds in the title compound, C28H27NO4, adopt an E conformation. In the crystal, pairs of C—H...O hydrogen bonds link the molecules into inversion dimers.
V. Sabari,R. Selvakumar,M. Bakthadoss,S. Aravindhan
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812029030
Abstract: In the crystal structure of the title compound, C16H12ClNOS, the molecules are linked into centrosymmetric R22(8) dimers via pairs of N—H...O hydrogen bonds. The seven-membered ring adopts a boat conformation.
V. Sabari,R. Selvakumar,M. Bakthadoss,S. Aravindhan
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812029054
Abstract: In the crystal structure of the title compound, C16H13NOS, molecules are linked into cyclic centrosymmetric R22(8) dimers via pairs of N—H...O hydrogen bonds. The seven-membered ring adopts a boat conformation.
Ethyl (2E,4E)-5-(3-bromophenylsulfonyl)penta-2,4-dienoate
V. Sabari,Ulaganathan Sankar,Ramakrishnan Uma,S. Aravindhan
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536813005771
Abstract: In the title compound, C13H13BrO4S, both C=C double bonds adopt an E conformation. The S atom has a distorted tetrahedral geometry with bond angles ranging from 102.17 (13) to 119.77 (14)°. The ethyl acrylate substituent adopts an extented conformation with all torsion angles close to 180°. In the crystal, molecules are linked into centrosymmetric R22(14) dimers via pairs of C—H...O hydrogen bonds.
Stability of trapless Bose-Einstein condensates with two- and three-body interactions
S Sabari,R Vasantha Jayakantha Raja,K Porsezian,P Muruganandam
Physics , 2014, DOI: 10.1088/0953-4075/43/12/125302
Abstract: We study the stabilization of a trapless Bose-Einstein condensate by analysing the mean-field Gross-Pitaevskii equation with attractive two- and three-body interactions through both analytical and numerical methods. Using the variational method we show that there is an enhancement of the condensate stability due to the inclusion of a three-body interaction in addition to the two-body interaction. We also study the stability of the condensates in the presence of the time-varying three-body interaction. Finally we confirm the stabilization of a trapless condensate from numerical simulation.
Methodological Innovation in Practice-Based Design Doctorates
Joyce S. R. Yee
Journal of Research Practice , 2010,
Abstract: This article presents a selective review of recent design PhDs that identify and analyse the methodological innovation that is occurring in the field, in order to inform future provision of research training. Six recently completed design PhDs are used to highlight possible philosophical and practical models that can be adopted by future PhD students in design. Four characteristics were found in design PhD methodology: innovations in the format and structure of the thesis, a pick-and-mix approach to research design, situating practice in the inquiry, and the validation of visual analysis. The article concludes by offering suggestions on how research training can be improved. By being aware of recent methodological innovations in the field, design educators will be better informed when developing resources for future design doctoral candidates and assisting supervision teams in developing a more informed and flexible approach to practice-based research.
Dynamical instability of a Bose-Einstein condensate with higher-order interactions in an optical potential through a variational approach
E. Wamba,S. Sabari,K. Porsezian,A. Mohamadou,T. C. Kofané
Physics , 2014, DOI: 10.1103/PhysRevE.89.052917
Abstract: We investigate the dynamical instability of Bose-Einstein condensates (BECs) with higher-order interactions immersed in an optical lattice with weak driving harmonic potential. For this, we compute both analytically and numerically a modified Gross-Pitaevskii equation with higher-order nonlinearity and external potentials generated by magnetic and optical fields. Using the time-dependent variational approach, we derive the ordinary differential equations for the time evolution of the amplitude and phase of modulational perturbation. Through an effective potential, we obtain the modulational instability condition of BECs and discuss the effect of the higher-order interaction in the dynamics of the condensates in presence of optical potential. We perform direct numerical simulations to support our analytical results, and good agreement is found.
Swarm based Reliable and Power Efficient Multicast Routing in Mobile Ad Hoc Network
A. Sabari,K. Duraiswamy
Information Technology Journal , 2010,
Abstract: In this study, we proposed to design a Reliable and Power Efficient Multicast Routing (RPEMR) protocol by using swarm intelligence with the help of reliability metric. In this protocol, reliability metric is computed by each node based on the power, bandwidth and mobility. Then the reliable nodes with the high reliability metric are determined. The swarm’s forward and backward agents construct a backbone for multicasting, by estimating the best path which connects the reliable nodes through intermediate nodes. The established paths provide reliable, shorter and faster communication. By simulation results, we show that the proposed protocol provides reliable and power efficient multicasting routing, by attaining high packet delivery ratio and low energy consumption, compared to the existing protocols.
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