1,722,106 research outputs found
Teacher identity construction: On becoming ESL teachers within the Malaysian context / Taghreed El Masry
No full textKey to this study is the question of how ESL pre-service teachers (PSTs) construct their professional identity (PI). This research explores the process of becoming a teacher and what this process implies to the construction of identity in terms of belonging to a community of practice and using one's personal adaptation process to develop one's professional identity. The aims of this study are: 1) to understand what PI transformations PSTs experience during their teaching practice stage, 2) to understand what personal and socio-contextual factors in the teacher education program (TEP) contribute to pre-service teachers' professional identity (PSTPI) construction, and 3) to explore how PSTs employ adaptation processes in response to the surrounding social context to develop their identities. This work is a case study. Eight (8) female Malaysian ESL pre-service teachers (PSTs) in the final stage of their third year of the teacher education program for teaching English as a second language (TESL) at University of Malaya (UM) were chosen as the research participants. Interviews and observation are the data collection methods employed in this study. Constant comparative analysis serves as the analytical data analysis approach. The findings show that professional identity (PI) is dynamic and changing constantly as one re-interprets and re-evaluates their practices and self as a teacher. Varying contexts from universities to secondary schools expose PSTs to different opportunities and challenges that may hinder or facilitate their PI development. The study reveals that a number of personal and socio-contextual factors interplay and influence PI development. This study also demonstrates how PSTs develop a sense of professional identity (a way to see themselves as teachers) and awareness of their potential as a new generation of teachers through their simulated teaching classes at university and based on the theories of language teaching and learning they encounter through their university courses. Upon shifting to actual teaching at schools, PSTs’ evolving identity conflicts with their new community of practice. Moreover, poor physical conditions of the schools and interpersonal relationships hinder PSTPI development. The positive notions of belonging to a community of practice (i.e., collaboration, mutual and collegial relationships) prove to be applicable in the simulated teaching class context. In such a supportive training context, PSTs use their adaptation process of observation-experimentation and evaluation to attempt different teaching practices. Nonetheless, the positive notions of the community of practice (CoP) are inapplicable in the teaching practicum context. Hence, PSTs struggle to construct their PI and negotiate their understanding and teaching practices. PSTs must alter their adaptation processes to find other strategies to negotiate PI construction
Neural Net Credit Scoring Models for Egyptian Banks: An Evaluation of Consumer Loans
No full textCredit scoring is regarded as a core statistical appraisal tool of financial institutions in
general and banks in particular during the last few decades. Furthermore, neural nets
have become one of the most important tools using in credit scoring. In this paper we
apply a simply validation technique by dividing the data-set into a training sample,
and a hold-out sample that tests the predictive effectiveness of the fitted model. To
study the overall predictive capability of the classification models, we used the whole
data-set as a test set. The purpose of this paper is to investigate the ability of neural
nets, such as probabilistic neural nets and multi-layer feed-forward nets, and
conventional techniques, such as discriminant analysis, probit analysis and logistic
regression, in evaluating customer credit in Egyptian banks applying credit scoring
models. The credit scoring task is based on a case-study of consumer loans by an
Egyptian bank. We examined both correct classification rates and misclassification
costs. The results so far reveal that the neural nets-models give a better average
correct classification rate and lower misclassification costs than the other techniques.
However, there is evidence of significant differences between the neural net models.
A one way ANOVA was conducted, as well as other tests, revealing some significant
differences between the means, medians and variances of the sets of correct
classification rates from the neural net models. Overall, probabilistic neural nets were
established as the superior unified technique
Influence of the immobilization process on the activity of β-galactosidase bound to Nylon membranes grafted with glycidyl methacrylate. Part 1. Isothermal behavior
No full textβ-Galactosidase from Aspergillus oryzae has been immobilized via diazotization or condensation on Nylon membranes grafted with glycidyl methacrylate. Immobilization via diazotization occurs through tyrosine residues, while immobilization via condensation involves multipoint attachment of the enzyme to the membrane through arginine residues. It was found that the immobilization via condensation strengthens the enzyme structure in contrast to the immobilization via diazotization, giving to the membranes prepared according to the first method higher resistance to temperature and acidic solutions in comparison to those prepared with the second method.The solvent accessibility to the residues of the amino acid constituting the enzyme was studied and the 3D structure of the catalytic site was obtained by computer simulation using β-galactosidase from Escherichia coli as template. The interpretation of the results was based on the 3D structure of the catalytic site and the arginine and tyrosine density around it.The apparent Km values of β-galactosidase immobilized on both membrane types are higher than those of the free enzyme, thus reducing the advantages of employing these new catalytic membranes in industrial processes. A way to overcome this drawback is indicated. Copyright © 2001 Elsevier Science B.V
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Supplemental Material - Crosstalk between miR-146a and pro-inflammatory cytokines in patients with systemic lupus erythematosus
No full textSupplemental Material for Crosstalk between miR-146a and pro-inflammatory cytokines in patients with systemic lupus erythematosus by Basima A El-Akhras, Roba M Talaat, Samir A El-Masry, Iman H Bassyouni, Ibrahim H El-Sayed and Yasser BM Ali in International Journal of Immunopathology and Pharmacology</p
Ahmed El-Masry, Die Bauten von H̱ādim Sulaimān Pascha (1468-1548) nach seinen Urkunden im Ministerium für fromme Stiftungen in Kairo. Berlin, Klaus Schwarz Verlag, 1991 (Islamwissenschaftliche Quellen und Texte aus deutschen Bibliotheken, Band 6)
No full textTuchscherer Michel. Ahmed El-Masry, Die Bauten von H̱ādim Sulaimān Pascha (1468-1548) nach seinen Urkunden im Ministerium für fromme Stiftungen in Kairo. Berlin, Klaus Schwarz Verlag, 1991 (Islamwissenschaftliche Quellen und Texte aus deutschen Bibliotheken, Band 6). In: Bulletin critique des annales islamologiques, n°11, 1994. pp. 138-140
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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