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11.
Puolakanaho A Poikkeus AM Ahonen T Tolvanen A Lyytinen H 《Journal of learning disabilities》2003,36(5):416-423
Four computer-animated tasks were created to analyze the underlying structure of emerging phonological awareness at 3.5 years of age and to explore the factors that influence children's (N = 91) performance on the tasks. Our findings indicated that already at this young age, children are able to master tasks demanding identification, blending, and continuation of phonological units when the tasks are presented in a motivating assessment context. In line with earlier research, children showed higher mastery in dealing with words and syllables than in dealing with phonemes. Targets in the initial position of a word were easier for children to identify than those in the final position. Our analysis provided support for two major dimensions of emerging phonological awareness based on the cognitive operations of the tasks: identification and blending of phonological units. 相似文献
12.
Longitudinal predictors of reading and spelling across languages varying in orthographic consistency
George K. Georgiou Minna Torppa George Manolitsis Heikki Lyytinen Rauno Parrila 《Reading and writing》2012,25(2):321-346
We examined the longitudinal predictors of nonword decoding, reading fluency, and spelling in three languages that vary in
orthographic depth: Finnish, Greek, and English. Eighty-two English-speaking, 70 Greek, and 88 Finnish children were followed
from the age of 5.5 years old until Grade 2. Prior to any reading instruction, they were administered measures of phonological
awareness, letter knowledge, and rapid naming speed. In Grade 2, they were administered measures of nonword decoding, text-reading
fluency, and spelling. The results showed that the model for nonword decoding in Greek was similar to that of Finnish (both
have consistent grapheme-to-phoneme mappings) while the model for spelling in Greek was similar to that of English (both have
some inconsistent phoneme-to-grapheme mappings). In addition, the models for nonword decoding and spelling in Finnish were
similar, because Finnish is consistent in both directions. Letter knowledge dominated the prediction in each language. The
predictable role of orthographic consistency on literacy acquisition is discussed. 相似文献
13.
Konttinen N Mets T Lyytinen H Paananen M 《Research quarterly for exercise and sport》2003,74(4):395-400
This study investigated the timing of the trigger pull in relation to the cardiac cycle during air rifle shooting. Electrocardiogram) was recorded from 20 male nonelite rifle shooters in two separate testing sessions. The testing was conducted at an indoor shooting range using an optoelectronic shooting system. Each participant fired a shot in the standing position at a distance of 10 m from the target. The results showed that compared to random triggering, the shooters fired more often during the phase of 10-50% of the R wave-to-R wave (R-R) interval and less often during the phase of 50-90%. With regard to performance accuracy, the participants exhibited average or above average performance, when the shot occurred in the beginning (0-50%) and in the end (70-99%) of the R-R interval. The less optimal range for the triggering was located within the 50-70% phase of the R-R interval. The length of R-R interval (i.e., heart rate) did not affect the relation of shot placement within the cardiac cycle to the accuracy of shooting performance. The present results extend previous findings by showing that in air rile shooting the optimum firing time within the cardiac cycle may be located in the systolic phase. It is argued that the systole-diastole dichotomy is not a sufficiently accurate way to investigate the effects of shot placement in the cardiac cycle. Further research is needed to examine the extent to which the relationship between the timing of triggering within the cardiac cycle and shooting performance depends a shooter's skill level. 相似文献
14.
Turid Hedlund Eija Airio Heikki Keskustalo Raija Lehtokangas Ari Pirkola Kalervo Järvelin 《Information Retrieval》2004,7(1-2):99-119
In this study the basic framework and performance analysis results are presented for the three year long development process of the dictionary-based UTACLIR system. The tests expand from bilingual CLIR for three language pairs Swedish, Finnish and German to English, to six language pairs, from English to French, German, Spanish, Italian, Dutch and Finnish, and from bilingual to multilingual. In addition, transitive translation tests are reported. The development process of the UTACLIR query translation system will be regarded from the point of view of a learning process. The contribution of the individual components, the effectiveness of compound handling, proper name matching and structuring of queries are analyzed. The results and the fault analysis have been valuable in the development process. Overall the results indicate that the process is robust and can be extended to other languages. The individual effects of the different components are in general positive. However, performance also depends on the topic set and the number of compounds and proper names in the topic, and to some extent on the source and target language. The dictionaries used affect the performance significantly. 相似文献
15.
Dominique D. Gagnon Juha E. Peltonen Hannu Rintamäki Sheila S. Gagnon Karl-Heinz Herzig Heikki Kyröläinen 《Journal of sports sciences》2017,35(20):1995-2004
Skin and core tissue cooling modulates skeletal muscle oxygenation at rest. Whether tissue cooling also influences the skeletal muscle deoxygenation response during exercise is unclear. We evaluated the effects of skin and core tissue cooling on skeletal muscle blood volume and deoxygenation during sustained walking and running. Eleven male participants walked or ran six times on a treadmill for 60 min in ambient temperatures of 22°C (Neutral), 0°C for skin cooling (Cold 1), and at 0°C following a core and skin cooling protocol (Cold 2). Difference between oxy/deoxygenated haemoglobin ([diffHb]: deoxygenation index) and total haemoglobin content ([tHb]: total blood volume) in the vastus lateralis (VL) muscle was measured continuously. During walking, lower [tHb] was observed at 1 min in Cold 1 and Cold 2 vs. Neutral (P?0.05). Lower [diffHb] was seen at 1 and 10 min in Cold 2 vs. Neutral by 13.5 ± 1.2 µM and 15.3 ± 1.4 µM and Cold 1 by 10.4 ± 3.1 µM and 11.1 ± 4.1 µM, respectively (P?0.05). During running, [tHb] was lower in Cold 2 vs. Neutral at 10 min only (P = 0.004). [diffHb] was lower at 1 min in Cold 2 by 11.3 ± 3.1 µM compared to Neutral and by 13.5 ± 2.8 µM compared to Cold 1 (P?0.001). Core tissue cooling, prior to exercise, induced greater deoxygenation of the VL muscle during the early stages of exercise, irrespective of changes in blood volume. Skin cooling alone, however, did not influence deoxygenation of the VL during exercise. 相似文献
16.
The Effects of Conjunction, Facet Structure, and Dictionary Combinations in Concept-Based Cross-Language Retrieval 总被引：1，自引：1，他引：0
The paper studies concept-based cross-language information retrieval (CLIR). The document collection was a subset of the TREC collection. The test requests were formed from TREC's health related topics. As translation dictionaries the study used a general dictionary and a domain-specific (=medical) dictionary. The effects of translation method, conjunction, and facet order on the effectiveness of concept-based cross-language queries were studied, and concept-based structuring of cross-language queries was compared to mechanical structuring based on the output of dictionaries. The performance of translated Finnish queries against English documents was compared to the performance of original English queries against the English documents, and the performance of different CLIR query types was compared with one another. No major difference was found between concept-based and mechanical structuring. The best translation method was a simultaneous look-up in the medical dictionary and the general dictionary, in which case cross-language queries performed as well as the original English queries. The results showed that especially at high exhaustivity (the number of mutually restrictive concepts in a request) levels cross-language queries perform well in relation to monolingual queries. This suggests that conjunction disambiguates cross-language queries. An extensive study was made of the relative importance of the concepts of requests. On the basis of the classification data of request concepts it was shown how the order of facets in a query affects cross-language as well as monolingual queries. 相似文献
17.
The play and language behavior of mothers with (n = 49) and without (n = 49) specific reading disabilities (RD) was investigated during play with their 14-month-old children. The contribution of maternal behavior to the language development of their children was examined. The children's receptive and expressive language skills were assessed longitudinally at 14, 18, and 30 months, using the MacArthur Communicative Development Inventories and the Reynell Developmental Language Scales. Children with and without familial risk for RD did not differ from each other in any play or language measures at these ages. No group differences were found for mothers' manifestations of nonsymbolic play and language. However, the typically reading (TR) mothers produced significantly more symbolic play and language in play interactions with their child than did the mothers with RD. The correspondence between mother-child symbolic play and maternal play-related language was also higher for the TR group than it was for the RD group. The mothers' symbolic play did not show any relation to their children's language development, but their expressions of symbolic language did show a relationship. The mothers' child-directed symbolic language contributed significantly toward the comprehension skills of 14- and 18-month-olds in the RD group. This association, however, was lower at 30 months, at which point it was reliably present for the first time in the TR group. 相似文献
18.
Emerging phonological awareness was compared in two groups of 3.5-year-old children belonging to the Jyv?skyl? Longitudinal Study of Dyslexia (JLD): children with familial risk of dyslexia (at-risk group n = 98) and children without such risk (control group n = 91). Four computer animated tasks were used: Word-level and Syllable-level Segment Identification, Synthesis, and Continuation of Phonological Units. The control group children manifested higher mastery than children in the at-risk group in phonological awareness, and the proportion of children with a low phonological awareness mean score was 2.5 times higher in the at-risk group than in the control group. In both groups, phonological awareness at 3.5 years was predicted by early language skills assessed between 14 and 26 months of age, and it was also associated with concurrent language. The difference between the at-risk and control group at 3.5-year in phonological awareness remained significant, even when the effect of other language skills such as productive and receptive vocabulary, and mastery of inflections, measured both at earlier ages and concurrently were controlled for. Our findings indicate that familial risk for dyslexia is reliably reflected in emerging phonological awareness already at this early age and it can be assessed independently of other language skills. 相似文献
19.
Outcomes of three different types of computerized training in sub-lexical items (word-initial consonant clusters) on reading
speed for 39 German-speaking poor readers in Grades 2 and 3 were evaluated. A phonological–orthographic association group, a reading aloud group, and a combined group were compared in performance with an untrained control group. During short-term training, the intervention groups showed higher gains than the control group in reading speed of the trained
sub-lexical items and of the words containing the trained segments. No differences were found between the intervention groups.
In the development of pseudoword reading, the groups did not show differential improvements. The generalization effect to
pseudoword reading was similar, whether the pseudowords contained the trained segment as a syllable or as a non-syllabic letter
string. The gains induced by training were specific to the materials used in training and did not induce gains in general
reading speed.
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20.
Laura Rimkute Minna Torppa Kenneth Eklund Jari-Erik Nurmi Heikki Lyytinen 《Reading and writing》2014,27(7):1231-1253
The present study examined the role that adolescents’ dyslexia plays in their educational expectations, as well as their parents’ expectations concerning their offspring’s future education. To investigate this, 170 adolescents were asked to report their educational expectations on two occasions while they were still attending comprehensive school (in 7th and 9th grade). Forty-five of the 170 adolescents were diagnosed as having dyslexia. The adolescents’ mothers and fathers also filled in questionnaires concerning their educational expectations for their offspring. The results showed that parents of boys with dyslexia had lower expectations about their sons’ future education than parents of typically reading boys. However, parents of girls with dyslexia and parents of typically reading girls did not differ in this respect. Parents’ expectations also predicted the adolescents’ own educational expectations. Moreover, dyslexia was associated with boys’ academic achievement (GPA), which further predicted their educational expectations. 相似文献