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71.
Abstract

This paper attempts to read aspects of language, history, and literariness historically from the perspective of both Brazil and Kerala. It is also an attempt to compare two very distinct places from within a framework centred on the South. Initially, region and nation are discussed, as well as modernity and development, and the issue of thinking South–South connections from an anthropological perspective. Next, the matter of the complex connected histories of Kerala within the Indian Ocean is mentioned, including Portuguese colonial history. The image and influence of Latin America in Kerala is briefly brought up, especially in what concerns literary influence. There follows an extended discussion of issues of literacy and the rise of the novel in Kerala as well as the historical intricacies of the construction of Malayalam as a modern medium. A contrast with the literary construction of modernity in Brazil is made, and the importance of English in Kerala is accordingly highlighted as well as the issue of the coloniality of the Portuguese within Brazil's complex creolized history. An analysis of the pioneering novel of Chandumenon is offered, and a comparison with a novel in Brazil is subsequently sketched. The different historical contexts of nineteenth century Brazil and Kerala are stressed. The close interrelatedness between issues of language, nation, and region is emphasised as well as the internal complexities of modernity in both regions.  相似文献   
72.

This paper presents an integrated view of the ideas and conceptual problems of high school students with respect to the cell, its processes, structure and relation to the functions of multicellular organisms. The theme of cell has divided into eight topics, with a questionnaire for each topic. In these topics, different levels of representation and understanding are distinguished between general considerations about plants and animals, those connected with processes at organ and system levels and, finally, the level of cell processes. Data from 1200 students were analysed. Results show that students have an analogical mechanism that establishes an isomorphism between the representation of the functioning of multicellular organisms of cell processes. A series of problems in understanding was also shown. Results imply that these problems are mainly due to students' lack of differentiation between some processes at organism and organ level, and have important implications for learning this subject. Finally, some suggestions are made for teaching.  相似文献   
73.
REEARCH REPORT     
This paper addresses the concept of geological time as used by students who face tasks that demand three types of skills: to locate events in time, to order them according to time calendar, and to manage time intervals. The empirical study consisted of asking high school students as well as technical school students to carry out tasks that required the use of the three previously mentioned components. It was found, first, that students frequently used erroneous temporal labels, which shows a lack of knowledge that would allow them to locate events within the context of geobiologic data. Second, the students did not store the representation of a succession of events, but were nevertheless able to create it by means of the deductive use of previous knowledge. Finally, the importance of having an appropriate representation of geological time intervals became patent while observing the students' difficulties in understanding geologic changes.  相似文献   
74.
The effects of exercise on the core musculature have not been investigated in prepubescents. The main purpose of the present study was to determine the volume and degree of asymmetry of rectus abdominis, obliques and transversus abdominis, quadratus lumborum, iliopsoas, gluteus and paravertebralis muscles in prepubescent tennis players and in untrained boys. The muscle volume was determined using magnetic resonance imaging (MRI) in 7 male prepubescent tennis players and 10 untrained controls (mean age 11.0 ± 0.8 years, Tanner 1–2). After accounting for height and body weight as covariates, the tennis players had 14–34% greater volume than the controls in all the muscles analysed (P < 0.05) except in paravertebralis, dominant quadratus lumborum and non-dominant gluteus, which had similar volumes in both groups (P = NS). Compared to controls, the tennis players displayed a greater degree of asymmetry in quadratus lumborum and rectus abdominis (3% vs. 15%, P < 0.01 and 8% vs. 17%, P = 0.06, respectively). The level of asymmetry of obliques and transversus abdominis, iliopsoas, gluteus and paravertebralis muscles was similar in both groups (P = NS). In conclusion, tennis playing at prepubertal ages induces a selective hypertrophy of the core musculature and exaggerates the degree of asymmetry of quadratus lumborum and rectus abdominis compared to untrained boys.  相似文献   
75.
The aim of this article is to introduce the R package semds for structural equation multidimensional scaling. This methodology combines multidimensional scaling with latent variable features from structural equation modeling and is applicable to asymmetric and three-way input dissimilarity data. This key idea of this approach is that the input data are assumed to be imperfect measurements of a latent symmetric dissimilarity matrix. The parameter estimation is performed via an alternating least squares multidimensional scaling procedure that minimizes the stress. The latent dissimilarities are estimated as factor scores within a structural equation modeling framework. Applications shown in the article involve data associated with the banking crisis and data from avalanche research. The models fitted with the semds package are compared to related methods from multidimensional scaling. The R code to reproduce all the computations is provided in the supplementary materials.  相似文献   
76.
Abstract

In the context of a changing society, strategies are required to eradicate the phenomenon of antisocial behaviour. The Aprender a Convivir universal prevention programme tries to provide such a response. This study attempts to test the effectiveness of the programme through a quasi-experimental long-term study carried out over three years in some nursery schools. Of the students who participated in this study (N = 784), those from the experimental group showed significant increases in social competence compared to the control group, and behavioural problems decreased, albeit not in any significant way. To draw conclusions about the effectiveness of the programme, further improvements are proposed to the design of the study.  相似文献   
77.
Nelson & Narens (1990) proposed that the allocation of study time in self-paced memory tasks depends on the comparison between the norm of study (established before studying) and the level of learning reached. We explored the role of practice, instructions, and individual differences in determining the norm of study and optimizing performance. In Study 1, participants carried out various study trials involving different (but similar) lists of words. In Study 2, participants were instructed to attain either maximum recall or maximum speed. In Study 3, the study time spontaneously used by each participant was estimated. The effect of increasing or decreasing this time was observed. Memory span and speed of lexical processing were also measured. Finally, Study 4 estimated participants were able to adapt performance to objective criteria (e.g., instructions). However, the time that they spontaneously use tends to be the most efficient. Variations in these times lead to losses in efficiency. Differences in processing capacity or motivation seem not to determine the differences in study time.  相似文献   
78.
79.
Search boxes providing simple keyword-based search are insufficient when users have complex information needs or are unfamiliar with a collection, for example in large digital libraries. Browsing hierarchies can support these richer interactions, but many collections do not have a suitable hierarchy available. In this paper we present a number of approaches for automatically creating hierarchies and mapping items into them, including a novel technique which automatically adapts a Wikipedia-based taxonomy to the target collection. These approaches are applied to a large collection of cultural heritage items which is formed through the aggregation of other collections and for which no unified hierarchy is available. We investigate a number of novel user-evaluated metrics to quantify the hierarchies’ quality and performance, showing that the proposed technique is preferred by users. From this we draw a number of conclusions as to what makes a hierarchy useful to the user.  相似文献   
80.
Science & Education - Most students have interacted with scientific representations that are used as teaching resources in schools. Often these external representations present challenges for...  相似文献   
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