777 research outputs found
Visual evoked potential repeatability using the Diopsys NOVA LX fixed protocol in normal older adults
No full textRichard C Trevino,1 Carolyn E Majcher,1 Adreain M Henry,1 Melinda Rodriguez,1 William E Sponsel1–3 1Rosenberg School of Optometry, University of the Incarnate Word, San Antonio, TX, USA; 2WESMDPA Baptist Medical Center Glaucoma Service, San Antonio, TX, USA; 3Department of Biomedical Engineering, University of Texas San Antonio, San Antonio, TX, USA Purpose: The purpose of this study was to evaluate the intrasession and intersession repeatability of visual evoked potentials in normal adults over 40 years of age as recorded using the Diopsys NOVA LX fixed protocol.Methods: Inclusion criteria were adults aged over 40 years with best corrected distance acuity of 20/40 or better in each eye. Subjects underwent three consecutive visual evoked potential examinations using the Diopsys NOVA LX fixed protocol. All examination procedures were carried out in accordance with the manufacturer recommendations. To assess intersession repeatability, nine subjects returned in 2–6 weeks for repeat examination.Results: A total of 46 subjects were recruited. Mean ± SD age: 53±9 years (range: 40–84 years); 69% of subjects were female and 80% were non-white. Coefficients of variation (CVs) and intraclass correlation coefficients (ICCs) revealed greater repeatability for P100 latency (CV: 3%–7%; ICC: 0.39–0.76) than for P100 amplitude (CV: 21%–33%; ICC: 0.34–0.69) and greater repeatability for recordings made with high contrast stimuli (amplitude CV: 21%–23%; latency CV: 3%–7%) than low contrast stimuli (amplitude CV: 24%–33%; latency CV: 6%–7%). Minimum detectable change values ranged between 4.50 and 9.95 µv for amplitude and 8.16–15.26 ms for latency. Repeatability was not influenced by age, sex, or race.Conclusion: The Diopsys NOVA LX fixed protocol demonstrated clinically acceptable intrasession and intersession repeatability in these healthy older adults, with latency being more repeatable than amplitude and examinations employing high contrast stimuli being more repeatable than those using low contrast stimuli. Keywords: electrophysiology, visual evoked potential, glaucoma, repeatabilit
PSALM LX UND PSALM CVIII
No full textAbstractThis historical allusions in Ps lx are sufficiently specific to date this psalm to the years 599 or 598 B.C.E.; the psalm may thus be understood as the work of a single author. The repetition of Ps lx 7-12 in Ps cviii 7-14, with due regard for the whole composition of Pss cviii-cx, leads further proof to the dating of Ps cx (and cviii) to the reign of John Hyrcan. Within the (proto-) canonical psalter, Ps lx and cviii read related to each other as promise (Ps lx) and fulfillment (Ps cviii).
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Documentos para la historia lingüística de Hispanoamérica. Siglos XVI a XVIII
Get PDFReseña de libro: Elena M. Rojas Mayer(comp.y ed.)
Documentos para la historia lingüística de Hispanoamérica. Siglos XVI a XVIII
Vol. III, Anejo LX del Boletín de la Real Academia Española.
Vol. IV, Anejo LXI del Boletín de la Real Academia Española.
Madrid: ALFAL, Comisión de Estudio Histórico del Español de América.
2008, 483 páginas (vol. III), 391 páginas (vol. IV)
ISBN 84-88292-16-3Artículo de publicación SciEL
M. Kritou tou Patzē Tipoukeitos : sive Librorum LX Basilicorum summarium.
No full textVols. 4-5 have imprint: Città del Vaticano, Biblioteca Apostolica Vaticana.[v.1] Libros I-XII / graece et latine ediderunt C. Ferrini [et J. Mercati -- [2] Libros XIII-XXIII / ed. F. Doelger -- [3] Libros XXIV-XXXVIII / ed. S. Hoermann et E. Seidl -- [4] Libros XLIX-LX / ed. S. Hoermann et E. Seidl -- 5. Libros XXXIX-XLVIII / ed. S. Hoermann et E. Seidl.Mode of access: Internet
Model transformation languages Lx and their implementation
No full textMaģistra darbā dots vispārējs uz modeļiem bāzētas sistēmu būves arhitektūras izklāsts. Autors aprakstījis modeļu transformāciju valodas L0’, L1, L2 un L3, kuru izstrādē pats piedalījies, šo valodu sintaksi, semantiku un saistību ar bāzes transformāciju valodu L0, kā arī detalizēti izklāstījis valodu L0’, L1, L2 un L3 realizācijas galvenos principus un problēmas. Tāpat dots arī pašas realizācijas – valodas L3 kompilatora uz bāzes valodu L0 – detalizēts izklāsts un piedāvāta iespēja ikvienam pašam pārliecināties par šī kompilatora darbību, lejupielādējot to no Lx saimes valodu mājas lapas. Pieminēti arī iespējamie valodas L3 lietojumi.In the Master’s paper a short summary of the model driven system architecture is given there. The author has described model transformation languages L0’, L1, L2 and L3 in the development of which he has taken part, the syntax and semantics of these languages, and the connection between them and the base transformation language L0. In addition, a detailed insight into main principles and problems of implementation of the languages L0’, L1, L2 and L3 is given in the paper. Moreover, a detailed description of the actual implementation, i.e., a compiler of the language L3 to the base language L0 is given. An opportunity to verify the functionality of this compiler by downloading it from the website of the Lx languages’ family is offered. Possible cases of usage of the language L3 are mentioned as well
The Diophantine equation (x+1)k + (x+2)k + ... plus (lx)k = yn revisted
No full textLet k,l >= 2 be fixed integers, and C be an effectively computable constant depending only on k and l. In this paper, we prove that all solutions of the equation (x + 1)(k) + (x + 2)(k) + ... + (lx)(k) = y(n) in integers x, y,n with x, y >= 1, n >= 2, k not equal 3 and l 1 (mod 2) satisfy max{x, y, n} < C. The case when is even has already been completed by the second author (see [24])
The landscapes maps of the National Atlas of Cuba LX Anniversary
Get PDFEl presente trabajo, tiene como propósito exponer las ideas fundamentales que han sustentado la elaboración de los tres mapas, que componen el epígrafe de Paisajes del Atlas Nacional de Cuba LX Aniversario, publicado en el 2019. La temática de los Paisajes es un epígrafe de la sección de Naturaleza, presentándose los siguientes mapas de Cuba: Paisaje antroponatural, Paisaje cultural y Regionalización geográfica, todos a escala 1: 1 000 000. Más que las características de los componentes, naturales, económicos, sociales y culturales, los autores pretenden destacar la interrelación sistémica en los mismos, que se manifiesta en determinados patrones espaciales, con rasgos de individualidad y singularidad.The purpose of this work is to present the fundamental ideas that have sustained the elaboration of the three maps that make up the epigraph of landscapes of the National Atlas of Cuba LX Anniversary, published in 2019. The theme of landscape is an epigraph of the Nature section, presenting the following maps of Cuba: Landscape anthroponatural, Cultural landscape and Geographic Regionalization, all at 1: 1 000 000. More than the characteristics of the natural, economic, social and cultural components, the authors intend to highlight the systemic interrelationship in them, which is manifested in certain spatial patterns, with traits of individuality and singularity
Crack detection in beams by wavelet analysis
No full textIn this paper, the wavelet transform is applied to the time-frequency analysis of the flexural waves in beams for crack detection. Here, a cantilever beam with edge cracks is used for a model to analyze the wave information after it is loaded an impact hammer on its free end. The flexural waves propagating in beams are dispersive and can be measured directly by using electrical-resistance strain gauges during the dynamic process. According to the data about one-crack and two-crack beams, we utilize the Morlet wavelet transform to decompose the flexural waves into each frequency component in time domain. The experimental results illustrate that the crack position can be detected exactly by means of the signal of mid-frequency flexural wave extracted by wavelet transform. The method is also suitable for determining the existence and location of multi-crack in a beam.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000176853900053&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Instruments & InstrumentationMechanicsMaterials Science, Characterization & TestingOpticsEICPCI-S(ISTP)
p Dissipative operator
No full textIn this paper the authors prove that the generalized positive p selfadjoint (GPpS) operators in Banach space satisfy the generalized Schwarz inequality, solve the maximal dissipative extension representation of p dissipative operators in Banach space by using the inequality and introducing the generalized indefinite inner product (GIIP) space, and apply the result to a certain type of Schrodinger operator
Elastodynamic stress-intensity factors for a semiinfinite crack under 3-d combined mode loading
No full textThe dynamic stress intensity factor histories for a half plane crack in an otherwise unbounded elastic body are analyzed. The crack is subjected to a traction distribution consisting of two pairs of suddenly-applied shear point loads, at a distance L away from the crack tip. The exact expression for the combined mode stress intensity factors as the function of time and position along the crack edge is obtained. The method of solution is based on the direct application of integral transforms together with the Wiener-Hopf technique and the Cagniard-de Hoop method, which were previously believed to be inappropriate. Some features of solutions are discussed and the results are displayed in several figures
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