108 research outputs found
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Comparing Vertical and Horizontal Scoring of Open-Ended Questionnaires
Although horizontal scoring is generally considered more accurate than vertical scoring (due to the elimination of halo effects), no systematic comparison of the two methods had been carried out, prior to this study. Our extensive and structured study yields a comprehensive perspective on this issue. Our findings are that: (1) in general, there is not much difference between the methods; (2) horizontal scoring is somewhat better in terms of reliability and validity; (3) the raters\u27 feedback pointed out the differences between the methods, with some in favor of one method, others in favor of the second method; and (4) the choice of scoring method makes a difference probably only with respect to a few specific questions. Accessed 13,985 times on https://pareonline.net from September 15, 2008 to December 31, 2019. For downloads from January 1, 2020 forward, please click on the PlumX Metrics link to the right
Centralized and Distributed Algorithms for Routing and Weighted Max-Min Fair Bandwidth Allocation
Adaptação do inventário parental “Language Use Inventory (LUI)” para crianças entre 18 e 47 meses para o português europeu : estudo piloto
Language acquisition and development takes in account the child’s interaction with the surrounding environment. Daily social interactions with people and communication with others allow the child to acquire language being pragmatics considered a system of rules that support the communicative use of language. Identification and assessment of children at risk for language disorders are crucial in order to carry out an effective early intervention. This study was carried out taking into account first, the relevance of pragmatics as a component of language, and second the lack of assessment tools in Portugal to assess these abilities. Therefore, the aim of this study consists on the translation, adaptation and validation of the inventory “Language Use Inventory” (LUI), to European Portuguese. The LUI is a standardized parent report measure designed to assess pragmatic language development in children within 18- to 47-month-old.Objetivo: A aquisição e o desenvolvimento da linguagem resultam
da interação da criança com o meio ambiente. As interações sociais
cotidianas com as pessoas e a comunicação com outros permitem que a
criança adquira linguagem, sendo a pragmática o sistema de regras que
suporta o uso comunicativo da linguagem. A identificação e a avaliação
de crianças em risco de desenvolverem transtornos de linguagem são
cruciais, tendo em vista a intervenção precoce eficaz. Tendo em vista a
relevância da pragmática como componente da linguagem e a escassez,
em Portugal, de instrumentos de avaliação da linguagem validados
para idades precoces, a finalidade deste estudo consistiu na tradução,
adaptação e validação do instrumento Language Use Inventory (LUI),
para o português europeu. O LUI é um inventário parental que avalia o
desenvolvimento da pragmática entre os 18 e os 47 meses. Métodos:
Foram adotados todos os procedimentos recomendados pelas diretrizes
internacionais sobre a adaptação de testes, culminando em estudo piloto
com uma amostra de 120 inventários, respondidos pelos pais/cuidadores
de crianças portuguesas da referida faixa etária. Resultados: Os
coeficientes de consistência interna (Alfa de Cronbach) para a versão
portuguesa do LUI situaram-se em 0,97 para a escala total e entre 0,71
e 0,96 para as subescalas. Conclusão: Os resultados preliminares dos
estudos de adaptação e de validação do LUI-Pt para crianças portuguesas
são promissores e asseguram a validade interna desta escala em termos
da sua dimensionalidade e consistência interna
An item and construct bias analysis of two language versions of a verbal analogies scale
The Woodcock Muñoz Language Survey is a test of cognitive academic language proficiency that has been adapted from English into Xhosa by a South African team of researchers. This study was primarily concerned with the Verbal Analogies Scale of the Woodcock Muñoz Language Survey and aimed to extend previous research on the equivalence of the two language versions of the scale. The study employed a monolingual two-group design consisting of 150 mainly English-speaking and 149 mainly Xhosa learners in Grades 6 and 7. The first research objective was to investigate item bias (or differential item functioning items) in the Visual Analogies Scale across the Xhosa and English versions using logistic regression and Mantel–Haenszel statistical techniques. Five items were identified as differential item functioning. The second objective was to evaluate the construct equivalence of the two versions by conducting a factor analysis after removing the differential item functioning items from the scale. Two factors were identified. The first factor displayed significant loadings across both language versions. The second factor was stable for the English version but not for the Xhosa version. Results were supported by calculating a Tucker’s phi coefficient for both factors. It was therefore concluded that Factor 1 is structurally equivalent across the two language versions but that Factor 2 was not structurally equivalent. Thus, the detection and removal of differential item functioning items did not result in structural equivalence.Department of HE and Training approved lis
Y.: Achieving bursty traffic guarantees by integrating traffic engineering and buffer management tools
Abstract — TE (Traffic engineering) tools are applied to design a set of paths, e.g., using MPLS, in the network in order to achieve global network utilization. Usually, paths are guaranteed long-term traffic rates, while the short-term rates of bursty traffic are not guaranteed. The resource allocation scheme, suggested in this paper, handles bursts based on maximal traffic volume allocation (termed TVAfB) instead of a single maximal or sustained rate allocation (termed MRA). This translates to better SLAs to the network customers, namely SLAs with higher traffic peaks, that guarantees burst non-dropping. Given a set of paths and bandwidth allocation along them, the suggested algorithm finds a special collection of bottleneck links, which we term the first cut, as the optimal buffering location for bursts. In these locations, the buffers act as an additional resource to improve the network shortterm behavior, allowing traffic to takes advantage of the under-used resources at the links that precede and follow the bottleneck links. The algorithm was implemented in MATLAB. The resulted provisioning parameters were simulated using NS-2 to demonstrate the effectiveness of the proposed scheme. I
A study of the effect of acid mucopolysaccharides on the growth of experimental tumors in mice.
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