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991.
Journal metrics are employed for the assessment of scientific scholar journals from a general bibliometric perspective. In this context, the Thomson Reuters journal impact factors (JIFs) are the citation-based indicators most used. The 2-year journal impact factor (2-JIF) counts citations to one and two year old articles, while the 5-year journal impact factor (5-JIF) counts citations from one to five year old articles. Nevertheless, these indicators are not comparable among fields of science for two reasons: (i) each field has a different impact maturity time, and (ii) because of systematic differences in publication and citation behavior across disciplines. In fact, the 5-JIF firstly appeared in the Journal Citation Reports (JCR) in 2007 with the purpose of making more comparable impacts in fields in which impact matures slowly. However, there is not an optimal fixed impact maturity time valid for all the fields. In some of them two years provides a good performance whereas in others three or more years are necessary. Therefore, there is a problem when comparing a journal from a field in which impact matures slowly with a journal from a field in which impact matures rapidly. In this work, we propose the 2-year maximum journal impact factor (2M-JIF), a new impact indicator that considers the 2-year rolling citation time window of maximum impact instead of the previous 2-year time window. Finally, an empirical application comparing 2-JIF, 5-JIF, and 2M-JIF shows that the maximum rolling target window reduces the between-group variance with respect to the within-group variance in a random sample of about six hundred journals from eight different fields.  相似文献   
992.
Based on Lord's criterion of equity of equating, van der Linden (this issue) revisits the so‐called local equating method and offers alternative as well as new thoughts on several topics including the types of transformations, symmetry, reliability, and population invariance appropriate for equating. A remarkable aspect is to define equating as a standard statistical inference problem in which the true equating transformation is the parameter of interest that has to be estimated and assessed as any standard evaluation of an estimator of an unknown parameter in statistics. We believe that putting equating methods in a general statistical model framework would be an interesting and useful next step in the area. van der Linden's conceptual article on equating is certainly an important contribution to this task.  相似文献   
993.
The present investigation addresses the question of whether certain factors can protect high-achieving students at risk for being labeled a nerd against devaluation. In 2 studies, 125 and 317 students from Grade 8 evaluated vignettes describing average students and students who were called “nerds.” Results indicate that being modest about good grades, being engaged in sports, and being sociable led to higher liking. In students who were labeled nerds, but not in average students, display of effort led to less favorable evaluations. The effects of the aforementioned factors were moderated by the gender of the perceivers and targets. Findings are discussed with respect to gender-role stereotypes and the self presentation of high-achieving students.  相似文献   
994.
This study deals with the statistical properties of a randomization test applied to an ABAB design in cases where the desirable random assignment of the points of change in phase is not possible. To obtain information about each possible data division, the authors carried out a conditional Monte Carlo simulation with 100,000 samples for each systematically chosen triplet. The authors studied robustness and power under several experimental conditions—different autocorrelation levels and different effect sizes as well as different phase lengths determined by the points of change. Type I error rates were distorted by the presence of autocorrelation for the majority of data divisions. The authors obtained satisfactory Type II error rates only for large treatment effects. The relation between the lengths of the four phases appeared to be an important factor for the robustness and power of the randomization test.  相似文献   
995.
The main aim of this study was to investigate the impact of formal teacher competence on pupils' reading achievement. The data comes from the Swedish participation in PIRLS 2001 in grade 3. Information was obtained from pupils (n = 5271) and teachers (n = 351). The analyses were conducted using 2-level structural equation modeling. Teacher competence was operationalized with multiple observed indicators and defined as a latent variable. Two measures of achievement were used: PIRLS 2001 reading test results and teacher judgement of pupil performance in the Swedish language. The results reveal that teacher competence was positively and similarly related to both achievement measures. No selection effects in terms of pupil socioeconomic status were found. The current study provides evidence for a strong impact of teacher competence on pupil reading achievement.  相似文献   
996.
The present study, a continuation of Valås (2001), is concerned with two categories of low achieving students. The focus is particularly on the consequences of being diagnosed as having learning disabilities compared with not having such a diagnosis. The sample consisted of 1833 students with data collected in grades 4, 7 and 9. Multivariate analyses of variances and analyses of structural equation models showed that students with learning disabilities and low achieving students attributed success in mathematics and first language to ability to a greater extent than other students. They also expressed lower performance expectations in mathematics and verbal skills and showed more helplessness and reported inferior psychological adjustment compared with other students. Moreover, students that were diagnosed as having learning disabilities (LD) and received special education showed more helplessness than the other low achieving children. They also reported lower academic expectations and lower self-esteem. In addition, the results revealed that boys showed more helpless behaviour, as assessed by teachers, than girls. However, on the other hand, girls reported more psychological maladjustment. The conclusion and request is that the process of selection (diagnosing the student as LD) and the organization and implementation of special education should be reconsidered.  相似文献   
997.
The overall aim of this study is to deepen our knowledge about the attitudes of teachers at the upper level of the Finland‐Swedish comprehensive school towards the treatment of culture in English foreign language (EFL) teaching. More specifically, the questions are how teachers interpret the concept “culture” in English foreign language teaching, how the cultural objectives are specified and what teachers do to attain these objectives. The study strives to reveal whether or not language teaching today can be described as intercultural in the sense that culture is taught with the aim of promoting intercultural understanding, tolerance and empathy. The empirical data consists of verbatim transcribed interviews with 13 Finland‐Swedish teachers of English at grades 7–9. The findings are presented according to three orientations. Within the cognitive orientation, “culture” is perceived as factual knowledge and the teaching of culture is defined in terms of the transmission of facts. The action‐related orientation sees “culture” as skills of a social and socio‐linguistic nature and the teaching aims at preparing students for future intercultural encounters. Within the affective orientation, “culture” is seen as a bi‐directional perspective. Students are encouraged to look at their own familiar culture from another perspective and learn to empathise with and show respect for otherness in general, not just concerning representatives of English‐speaking countries.  相似文献   
998.
Palmér, R. 1982. A Longitudinal Study of the Social Adjustment of Mentally Retarded Adults in Sweden. A Discussion of Methodological Problems and Preliminary Results. Scandinavian Journal of Research 26, 197‐209. In connection with an interdisciplinary research project, 1966‐1971, a differential psychological survey of about one hundred mentally retarded young people in the 18‐25 age‐group was carried out. About ten years later a follow‐up investigation began. Initially the central concern was to clarify the meaning of social adjustment in middle age. Essential components of this variable include objectively observable facts such as work and living situation, but also adaptive behaviour and the individual's perception of himself and his situation. Methodological problems are examined in broader theoretical perspective. One conclusion is that we should seek access to individual perceptions and experiences ‐ of which handicap awareness is a vital component ‐ via relatively unstructured conversations and interviews. This part of the study can then be developed into a consciously hermeneutic approach. Preliminary results of analysis are discussed.  相似文献   
999.
This study examines the changes in educational inequality at the school‐ and individual‐levels in 1991 and 2001. Comparisons are made between the IEA Reading Literacy Study 1991 and the so called 10‐Year Trend Study in PIRLS 2001. The between‐school differences in reading achievement variance and the size of the relationship between SES and reading achievement at school‐level are the two main focuses. Applying a two‐level structural equation modeling technique, it was found that the between‐school differences in reading achievement were greater in RLS 2001 than in RLS 1991, and the school SES effect has been strengthened over time. These changes indicate that educational inequality in Sweden has increased over time. Some possible explanations to these changes are discussed with reference to school reforms and demographic changes.  相似文献   
1000.
This essay takes up Felipe Guaman Poma de Ayala's Primer Nueva Corónica y Buen Gobierno as an artifact of early colonial Peruvian rhetoric and an evocative example of American rhetorical theory. Our analysis illuminates how Guaman Poma theorizes transcultural colonial communication from an Andean perspective. We highlight three key elements in his theory: its ethical copia, its concern with the insufficiency of the available genres, and its assumption that communication will fail. In the end, we suggest, Guaman Poma provides a generative, if incomplete, theory that helps account for the complexities of colonial rhetorical practice.  相似文献   
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