排序方式： 共有61条查询结果，搜索用时 46 毫秒
11.
In this paper, the Takagi–Sugeno fuzzy recurrent neural network (T–S FRNN) is applied to model a pH neutralization process. Since the accuracy and complexity of the network are two contradictory criteria for the T–S FRNN model, a DNA based NSGA-II is proposed to optimize the parameters of the model. In the DNA based NSGA-II, each individual is encoded with one nucleotide base sequence, modified DNA based crossover and mutation operators are designed to improve the searching ability of the algorithm, and crowding tournament selection is applied based on the Pareto-optimal fitness and the crowding distance. The study on the performance of test functions shows that the DNA based NSGA-II outperforms NSGA-II in the quality of the obtained Pareto-optimal solution. To verify the effectiveness of the established T–S FRNN model for the pH neutralization process, it is compared with two T–S FRNN models optimized with other methods. Comparison results show that the model optimized by DNA based NSGA-II is more accurate and the complexity of the network is acceptable. 相似文献
12.
ABSTRACTThe present article connects a secondary analysis of quantitative data from the Programme for the International Assessment of Adult Competencies (PIAAC) with the theoretical approach of ‘literacy practices’ and related research results from the so-called New Literacy Studies (NLS) tradition, which follows a cultural practices paradigm.According to the literacy as social practice approach, the analysis of adults’ literacy and numeracy practices could provide relevant policy information about how to address target groups in adult literacy and basic education. Thus, a Latent Class Analysis was carried out with the German PIAAC dataset in order to differentiate the adult population by their uses of literacy, numeracy and ICT.As a result of this procedure, three subgroups of adults can be distinguished by the frequency in which they use selected skill-related activities. Surprisingly, an adult’s individual literacy level does not clearly predict group membership. A further interesting result is that participants in one of the groups seem to compensate for the few chances they have to use their skills at work by using them more often in their everyday life. Both results contribute to the need to draw a more differentiated picture of adults with lower literacy skills. 相似文献
13.
Anke de Boer Sip Jan Pijl Alexander Minnaert 《International Journal of Disability, Development & Education》2012,59(4):379-392
The trend towards inclusive education has led to an increase of studies focusing on peer attitudes. This review study presents an overview of studies describing attitudes of students, variables relating to students’ attitudes, and the relationship between students’ attitudes and the social participation of peers with disabilities. Based on a literature search we selected 20 studies that were conducted in seven different countries. Outcomes were described in terms of negative, neutral or positive according to three attitude components (cognitive, affective and behavioural). The results show that students generally hold neutral attitudes towards peers with disabilities. Several variables were found relating to their attitudes (i.e., gender, age, experience with and knowledge about disabilities, parental influence). Moreover, the results indicate that attitudes of peers relate to the social participation of students with disabilities. Implications of the findings are discussed in terms of promoting positive attitudes of peers. 相似文献
14.
To examine the unique functions of same‐ and cross‐ethnic friendships, Latino (n = 536) and African American (n = 396) sixth‐grade students (Mage = 11.5 years) were recruited from 66 classrooms in 10 middle schools that varied in ethnic diversity. Participants reported on the number of same‐ and cross‐ethnic friends, perceived vulnerability, friendship quality, and the private regard dimension of ethnic identity. Whereas same‐ethnic friendships were uniquely associated with stronger private regard, more ethnic diversity and cross‐ethnic friendships were uniquely associated with less perceived vulnerability. Multilevel structural equation modeling tested whether cross‐ethnic friendships mediated the diversity‐vulnerability relation. Although cross‐ethnic friendships did not significantly mediate this relation at the classroom level, these friendships predicted less vulnerability at the individual student level. 相似文献
15.
We investigated the effect of emphasising the realistic modelling complexity in text or in the accompanying picture on the solution of P-items, in relation to pupils’ grade. 290 pupils from the 5th and 6th grade of various elementary schools in Flanders (Belgium) made a paper-and-pencil task with 7 word problems that are problematic from a realistic modelling perspective (so-called P-items). Pupils were divided in four conditions, involving the four combinations of the two above-mentioned task variables. Their reactions to the P-items were coded as realistic or non-realistic. We found a relatively small but significant effect of emphasising the realistic modelling complexity in the text of the P-items on the number of realistic reactions, whereas no effect was observed for the accentuation of that complexity in the picture nor for the interaction of the two manipulated task variables. Theoretical and educational implications of these results are discussed. 相似文献
16.
The authors focused on analyzing (a) peer acceptance and peer rejection of typically developing students, students with attention deficit hyperactivity disorder (ADHD), and students with autism spectrum disorder (ASD) in general secondary education; (b) attitudes of general secondary-aged students toward peers with ADHD and ASD; and (c) the relationship between peer acceptance/rejection and students' attitudes. A cross-sectional study was performed (n = 437 typically developing students, n = 28 students with ADHD/ASD; range = 12–15 years old). Students were asked to indicate with whom they prefer to hang out or preferably not want to hang out (peer acceptance and peer rejection). Attitudes were assessed using the Attitude Survey Toward Inclusive Education. Multilevel analysis showed significant differences between students with ADHD and ASD and typically developing peers on peer acceptance and higher on peer rejection. Second, typically developing peers showed neutral attitudes toward peers with ADHD or ASD. Third, the results showed that students' rejection and attitudes of peers significantly relate to each other. 相似文献
17.
Marcel?V.?J.?VeenmanEmail author Rosalie?Kok Anke?W.?Bl?te 《Instructional Science》2005,33(3):193-211
The first objective of this study was establishing to what extent metacognitive skill is associated with intelligence. As a second objective, the impact of hints on the execution of metacognitive skills was investigated. Both issues have major implications for the training and transferability of metacognitive skills during performance on a representative school task. First, a standardized intelligence-test was administered to a group of first-year secondary-school students. Next, these students solved six math word problems, three without metacognitive hints and three including these hints. Metacognitive skilfullness was assessed through systematical observation, while learning performance consisted of performance on a math task and grade point average (GPA). Results show that without hints metacognitive skilfulness is the main predictor of initial learning, while intelligence additionally enters the regression equation after the presentation of metacognitive hints. GPA also appears to be predicted by a combination of intellectual and metacognitive skills. Consequences for the early acquisition of metacognitive skills are discussed. 相似文献
18.
Parents of children with dyslexia experience more parenting stress and depressive symptoms than other parents. The purpose of this study was to evaluate the effects of a cognitive-behavioral group-based program for parents of dyslexic children on parenting stress levels, parent–child homework interactions and parental competencies. 39 children with dyslexia and their mothers were randomly assigned either to a cognitive-behavioral-therapy group or a waiting-list control group. The intervention lasted for 3 months. Mothers filled in the Parenting Stress Index and a paper–pencil questionnaire assessing dyslexia specific stress, conflicts in homework situations and competencies in dealing with dyslexia. Assessment took place before, immediately after, and 3 months following intervention. A multivariate analysis of variance revealed overall effectiveness of the program (partial η2 = .091), which can be mainly attributed to the reduction of parenting stress and dyslexia specific stress as well as an enhancement of parental competencies. Planned contrasts showed that effects could not be approved directly after the training but 3 months later, indicating a delayed effect. Future studies should examine program effects on mothers and fathers on the basis of a larger representative sample. 相似文献
19.
Attitudes of Dutch and German preschool teachers towards professional childcare: a cultural comparison 总被引：1，自引：0，他引：1
Anke König Geerdina Maria van der Aalsvoort 《Early Years: An International Journal of Research and Development》2009,29(3):249-260
This study explores educators' reflections on professional childcare practice in different national contexts. The data were collected by showing video clips of classroom activities in Japanese, Dutch and German pre‐schools to experienced German and Dutch pre‐school teachers. The clips were used to elicit their opinions on playing and learning in educational settings through a standardized questionnaire completed immediately after viewing each clip. The participants were also invited to rate the strength of cognitive, social, physical and emotional developmental domains during the activity. These data were analysed by classifying the questionnaire responses into four categories: remarks related to teachers, to children, to peers and to context. The frequencies of the categories and the ratings of developmental domains were computed and compared by t‐tests between the German and the Dutch sample. The findings revealed that pre‐school teachers offered more elaborated perspectives on the content of the foreign video clips than on the clips from their own country. There were also some differences with regard to developmental domains. With regard to pre‐school teacher training it was concluded that the teachers' knowledge base should be used as an input for their professional practice. 相似文献
20.
Susan Golombok Lucy Blake Jenna Slutsky Elizabeth Raffanello Gabriela D. Roman Anke Ehrhardt 《Child development》2018,89(4):1223-1233
Findings are presented on a study of 40 gay father families created through surrogacy and a comparison group of 55 lesbian mother families created through donor insemination with a child aged 3–9 years. Standardized interview, observational and questionnaire measures of stigmatization, quality of parent–child relationships, and children's adjustment were administered to parents, children, and teachers. Children in both family types showed high levels of adjustment with lower levels of children's internalizing problems reported by gay fathers. Irrespective of family type, children whose parents perceived greater stigmatization and children who experienced higher levels of negative parenting showed higher levels of parent‐reported externalizing problems. The findings contribute to theoretical understanding of the role of family structure and family processes in child adjustment. 相似文献