共查询到20条相似文献，搜索用时 15 毫秒
1.
英语情态动词的一词多义给自然语言处理带来了很大困难。情态动词语义对语境很敏感,发现影响情态动词语义的主要语境因素对情态动词特征选择、机器翻译等都十分重要。因此,采用神经网络技术对英语情态动词进行语义排歧,并确定不同语境特征对语义排歧结果的影响。基于一个 100 万字的语料库,以英语情态动词 must 为例,从语境中提取影响 must 语义的语义特征和句法特征,计算并确定这些特征向量值,建立可区分根情态与认识情态语义的 BP 神经网络,排歧正确率达到 94%。在此基础上,通过实验研究确定不同语境特征对情态动词 must 语义排歧的影响程度等级。该研究结果为情态动词语义排歧及情态动词语义人工识别提供了重要依据。 相似文献
2.
The purpose of the present study was to examine the predictive value of a dynamic test of English and French lexical specificity on at-risk reading classification in 13 at-risk and 44 not at-risk emerging English (L1)–French (L2) bilingual Grade 1 children (M = 75.87 months, SD = 3.18) enrolled in an early French immersion program in Canada. Lexical specificity was assessed with a computerized word learning game in which children were taught new English (e.g., “foal” and “sole”) and French (e.g., bac “bin” and bague “ring”) word pairs contrasted by minimal phonological differences. The results indicated that the dynamic test of lexical specificity in English contributed significantly to the prediction of children’s French at-risk reading status at the end of Grade 1 after controlling for French phonological awareness and nonverbal reasoning skills. However, French lexical specificity did not predict children’s reading risk classification in French after controlling for French phonological awareness. Thus, it may be feasible to identify at-risk status in emerging bilinguals using dynamic measures in their stronger language. 相似文献
3.
Leonore Ganschow 《Annals of dyslexia》1984,34(1):271-284
This paper examines spontaneous writing of a college student with a history of language learning problems. Writing samples,
collected from tests and papers in college courses, were analyzed for syntactic complexity, spelling, grammatical errors,
semantic errors, and organization. Metacognitive factors were analyzed by examining student’s responses to questions about
his perceptions about writing. Results showed: (a) the dyslexic student produced syntactically complex structures comparable
to nondyslexic writers; (b) the student averaged 9% spelling errors per essay and 17 grammatical errors per essay; (c) primary
semantic errors were inappropriate word choices, incorrect determiners, and overuse of “so” as a transition; (d) major problem
with organization involved difficulties with expanding an idea beyond “saying the same thing in a different way;” (e) metacognitive
strategies included difficulties with separating self from writing and recognizing ambiguity in writing. The paper then describes
six instructional strategies to assist in remediation of the student’s writing problems.
Paper presented at the Second Miami University Sentence Combining Conference, October, 1983. 相似文献
4.
Children’s skill at recoding graphemes to phonemes is widely understood as the driver of their progress in acquiring reading
vocabulary. This recoding skill is usually assessed by children’s reading of pseudowords (e.g., yeep) that represent “new words.” This study re-examined the extent to which pseudoword reading is, itself, influenced by orthographic
rimes (e.g., eep) of words of the child’s reading vocabulary, during the development of reading skill. In Study 1, children with word reading
levels of 6–10 years read matched pseudowords that do and do not share an orthographic rime with words of their reading vocabularies.
Study 2 was conducted to further examine such a comparison for children of the 6- to 8-year word reading levels. There was
a small and constant advantage of shared lexical orthographic rimes for children with reading levels 6–8 years but from 8
to 10 years that advantage increased significantly, as expected by Ehri’s phase account of word reading development. The pseudoword
reading of children learning to read English involves use of lexical orthographic components as well as context-free recoding
of graphemes to phonemes. This implies a qualification to the common interpretation of pseudoword reading as a measure of
context-free grapheme–phoneme recoding. Such a measure should use selected pseudowords that do not share orthographic rime
units or other multigrapheme components with words of the children’s reading vocabularies. 相似文献
5.
Ann Champion 《Annals of dyslexia》1997,47(1):29-55
The present study was undertaken to measure and compare reading disabled and nondisabled readers’ semantic and syntactic knowledge
about derivational suffixes as a function of modality (reading versus listening) and as a function of the “neutrality” of
the derivative (neutral versus nonneutral). In the present study, neutrality refers to how straightforward and productive
is the relationship between the root and derived form, with “completeness” qualifying as a neutral derivative and “completion”
a nonneutral derivative. Two experimental tests were designed for the study. The Semantics test measured ability to extract
lexical-semantic information from suffixed words, and the Syntax test measured knowledge regarding the part-of-speech contribution
of derivational suffixes. In each test the target words were divided equally between neutral and nonneutral derivatives and
between items that were either read or listened to. Participants included 20 sixth-grade reading disabled students (6RD),
20 fourth-grade normal readers (4N), and 20 sixth-grade normal readers (6N).
In both the Semantics test and the Syntax test all groups scored better on neutral than on nonneutral derivatives while listening
and reading, and the RD students were no more affected by neutrality than the nondisabled readers. In the Semantics test all
groups scored better in listening than in reading, but the RD group showed the greatest oral-reading difference. The RD group
also scored better in listening than reading in the Syntax test (real words), whereas the two nondisabled groups scored better
in reading than in listening. Thus, the RD students were better able to demonstrate their knowledge of suffixed words in oral
language measures than in reading measures. 相似文献
6.
The aim of this article is to shed light on some aspects of professional responsibility by investigating students’ visions
of future work and notions of professional responsibility. The data is based on interviews with samples of freshmen in three
educational programmes at the University of Oslo in Norway. The data has been analysed in relation to two thesis claimed by
Steven Brint: “The rise of a utilitarian ethos” in higher education and the movement from “social trustee professionalism”
to “expert professionalism”. The findings show that the students in our sample do not think of higher education primarily
as a means to get credentials that will be useful in the labour marked. An intellectual interest in the discipline is the
most prevalent reason for the students’ educational choices. Furthermore our findings support an orientation towards “expert
professionalism” rather than “social trustee professionalism”. But, embedded in the perspective of an expert there is an emphasis on ethical knowledge, moral and/or societal responsibility
and the wish to do good for others. However, the students’ sense of responsibility seems to be restricted to certain “localism”
of their specific occupation. Based on the findings we argue that the students reveal a moral awareness that should be taken
seriously by the educational institution in order to foster critical rationality and professional commitments. 相似文献
7.
This study explored the effects that the incorporation of nature of science (NoS) activities in the primary science classroom
had on children’s perceptions and understanding of science. We compared children’s ideas in four classes by inviting them
to talk, draw and write about what science meant to them: two of the classes were taught by ‘NoS’ teachers who had completed
an elective nature of science (NoS) course in the final year of their Bachelor of Education (B.Ed) degree. The ‘non-NoS’ teachers
who did not attend this course taught the other two classes. All four teachers had graduated from the same initial teacher
education institution with similar teaching grades and all had carried out the same science methods course during their B.Ed
programme. We found that children taught by the teachers who had been NoS-trained developed more elaborate notions of nature
of science, as might be expected. More importantly, their reflections on science and their science lessons evidenced a more
in-depth and sophisticated articulation of the scientific process in terms of scientists “trying their best” and “sometimes
getting it wrong” as well as “getting different answers”. Unlike children from non-NoS classes, those who had engaged in and
reflected on NoS activities talked about their own science lessons in the sense of ‘doing science’. These children also expressed
more positive attitudes about their science lessons than those from non-NoS classes. We therefore suggest that there is added value in including NoS activities in the primary science curriculum in that they seem to help children make sense of science and
the scientific process, which could lead to improved attitudes towards school science. We argue that as opposed to considering
the relevance of school science only in terms of children’s experience, relevance should include relevance to the world of
science, and NoS activities can help children to link school science to science itself. 相似文献
8.
Kindergarten Teachers’ Conceptual Framework on the Ozone Layer Depletion. Exploring the Associative Meanings of a Global Environmental Issue 总被引：1，自引：0，他引：1
Maria Daskolia Evgenia Flogaitis Evgenia Papageorgiou 《Journal of Science Education and Technology》2006,15(2):168-178
This paper reports on a study conducted among Greek kindergarten teachers aiming to explore their conceptual frameworks on a major environmental issue of our times: the ozone layer depletion. The choice of this particular issue was premised on its novelty, complexity and abstractness which present teachers with difficulties in its teaching. A free word association task was employed to identify the associative meaning of the issue among the participant teachers. The study’s results revealed the existence of a simplistic, linear, cause-and-effect scheme in the teachers’ conceptual frameworks, the two poles of which are “solar radiation” and “its harmful results for human health”. Some of the well-known misconceptions and misunderstandings already emerged in previous research also arise in this study. Prominent among them are the deeply rooted confusion between the “ozone hole” and “greenhouse effect”, a general fusion of ideas concerning all environmental problems and an overemphasis on the harmful consequences of the ozone depletion on human health. Implications for kindergarten teacher education are also discussed.The present study is part of a research project that is co-funded by the European Social Fund and National Resources – (EPEAEK II) PYTHAGORAS II. 相似文献
9.
Heidi B. Carlone Sue Kimmel Christina Tschida 《Cultural Studies of Science Education》2010,5(2):447-476
This is an ethnographic study of a newly created math, science, and technology elementary magnet school in a rural community
fiercely committed to cultural preservation while facing unprecedented economic instability brought on by massive loss of
manufacturing jobs. Our goal was to understand global- and community-level contexts that influenced the school’s science curriculum,
the ways the school promoted itself to the community, and the implicit meanings of science held by school staff, parents and
community members. Main sources of data were the county’s newspaper articles from 2003 to 2006, the school’s, town’s, and
business leaders’ promotional materials, and interviews with school staff, parents, and community members. A key finding was
the school’s dual promotion of science education and character education. We make sense of this “science with character” curriculum
by unpacking the school and community’s entanglements with historical (cultural preservation), political (conservative politics,
concerns for youth depravity), and economic (globalization) networks. We describe the ways those entanglements enabled certain
reproductive meanings of school science (as add-on, suspect, and elitist) and other novel meanings of science (empathetic,
nurturing, place-based). This study highlights the school as a site of struggle, entangled in multiple networks of practice
that influence in positive, negative, and unpredictable ways, the enacted science curriculum. 相似文献
10.
Kyle L. Peck 《TechTrends》1998,43(2):47-53
Conclusion I applaud ISTE, AASL, AECT, and the other organizations involved for tackling the “messy work” of developing standards for
the use of technology and information resources in schools. And, at the same time, I call for a “second generation” of standards
that define realistic expectations for teachers based on the subjects and levels they are called upon to teach. I propose
that professional organizations from each subject work with ISTE and AECT to complete this huge task, and I propose that we
consider as a “next step” the creation of a set of on-line learning experiences through which teachers can gain the identified
skills and knowledge by using the very technologies we’re hoping they’ll embrace in their own teaching.
There’s an old saying, “If you don’t know where you’re going, any road will do.” As far as educational technologies are concerned,
this is also true. For many, the goal seems to have been simply to “get more computers into the schools,” without much thought
about purpose. To return to Phil Schlechty’s metaphor, It’s generally been a brief and misguided “Ready” stage (occupied with
questions like “How many do we need?” “What type?” “Where?” and “How shall we connect them?”), followed by “Fire!” (the acquisition
and installation of equipment). What we need is: “Ready” (the creation of appropriate teams of people who will combine their
insights to plan for the district)... “Aim” (a series of discussions about what technologies can accomplish for schools and
the students they serve)... “Fire” (acquisition, installation, and professional development according to plan)... “Aim” (an
assessment of how well the technologies and related programs met the intended goals, and a new planning effort designed to
close the gap)... “Fire” (acquisition and implementation designed to eliminate the gap)... “Aim” (another gap assessment)...
“Fire” (another attempt to close gaps)..., And so on. 相似文献
11.
Jean-Léon Beauvois Eric Dépret 《European Journal of Psychology of Education - EJPE》2008,23(4):493-500
We focus on three aspects of the articles of Reyna, of Perry, Stupnisky, Daniels and Haynes, and of Murdock, Beauchamp and
Hinton. The first aspect is the logic of causal chain, a logic that we differentiate from a more deterministic approach. The
second one is the mode of corrective action (attribution retraining) that is planned for students, whether cheaters or lower
achievers. We differentiate this mode of action from the one that is based on the idea of normative awareness (or “clear-sightedness”):
normative awareness does not imply that the speaker believes in what he says. Finally, we discuss the concept of social value
(of a person) which seems to underlie the empirical results but which does not appear in the authors’ formulations. But this
concept stems from a “sociologizing” meta-theory that these authors probably do not share and which makes the norm of enternality
theory difficult to integrate within Weiner’s attribution theory. 相似文献
12.
Guilaine Menotti Graciela Ricco 《European Journal of Psychology of Education - EJPE》2007,22(4):477-495
Wishing to explore the complexity of the conceptual, didactic and institutional aspects of learning a scientifically defined
object of knowledge, we chose to study the link between the personal relation to numeration developed by six-year-old pupils
in first grade (“cours préparatoire” the first level of primary school in France), and more particularly, the relationship
between the construction of pupils’ relation to the concept of “tens” and the didactic practice of their teachers during the
lessons.
Our study shows that both teachers establish “strong” didactic contracts, leaving it up to the pupils to develop on their
own the capacity of making mathematical decisions and destabilizing the procedure of counting one by one. There is a difference
between classes in the articulation of knowledge and know-how. In the ZEP class learning is centered on know-how; in the other
class knowledge and know-how are simply juxtaposed, their relationship is never made explicit. The result is that only 4 children
out of 42 (the two classes taken together) can work with both. All four belong to the categories of “good” or “very good”
students. 相似文献
13.
This study reports on the development of an assessment to measure bilingual adolescents’ knowledge of polysemous vocabulary and explores the contribution of polysemous word knowledge to reading comprehension among those students. Spanish–English bilingual students in seventh grade (n = 107) completed a battery of standardized reading and language measures along with a researcher-designed measure of their knowledge of the academic senses of words that also have casual, everyday meanings. Item-response theory analyses and correlational analyses provided validity evidence for the assessment. Regression analyses indicated that students’ knowledge of academic senses of polysemous words predicted their reading comprehension, even after controlling for their knowledge of the casual sense of the same words, vocabulary breadth, and decoding skills. Findings suggest that comprehension of grade-level texts is uniquely predicted by the ability to recognize the meanings of familiar words when they appear in academic contexts. 相似文献
14.
In an era of rapid global economic and social change, educational institutions like schools and universities are struggling
to keep their curricula and programs relevant. Singapore’s schools are no exception, especially when education is viewed as
the essential element for maintaining the nation’s global competitiveness in ways that are totally disproportionate to its
size. The current shift from an ‘efficiency-’ to an ‘ability-’ driven paradigm in education, however, is increasing uncertainty
and raising the stakes in an already pressurized system where schools, educators and students constantly compete for top academic
awards and rewards. The concept of “partnership” in Singapore education is a significant, relatively new, trend that has caught
on among local schools only since the late-1990s, with the focus on creating better “total” learning environments for students.
This paper analyses the challenges of matching rhetoric with professional practice with regard to school–home partnerships
in Singapore, and concludes that the key to authentic collaboration lies in the mutual appreciation and valuing of diversity
as well as a deep sense of shared responsibility by all parties concerned. 相似文献
15.
Individuals and Leadership in an Australian Secondary Science Department: A Qualitative Study 总被引：1，自引：0，他引：1
Wayne Melville John Wallace Anthony Bartley 《Journal of Science Education and Technology》2007,16(6):463-472
In this article, we consider the complex and dynamic inter-relationships between individual science teachers, the social space
of their work and their dispositions towards teacher leadership. Research into the representation of school science departments
through individual science teachers is scarce. We explore the representations of four individual teachers to the assertions
of teacher leadership proposed by Silva et al. (Teach Coll Rec, 102(4):779–804, 2000). These representations, expressed during
regular science department meetings, occur in the social space of Bourdieu’s “field” and are a reflection of the “game” of
science education being played within the department. This departmentally centred space suggests an important implication
when considering the relationship between subject departments and their schools. The development of an individual’s representation
of teacher leadership and the wider “field” of science education appears to shape the individual towards promoting their own
sense of identity as a teacher of science, rather than as a teacher within a school. Our work suggests that for these individuals,
the important “game” is science education, not school improvement. Consequently, the subject department may be a missing link
between efforts to improve schools and current organizational practices. 相似文献
16.
The purpose of this study was to determine whether poor readers have more pronounced problems than average-reading peers reading
derived words the base forms of which undergo a phonological shift when a suffix is added (i.e., shift relations as in “natural”),
as compared to derived words whose forms are phonologically and orthographically transparent (i.e., stable relations, as in
“cultural”). Two computer-based word recognition tasks (Naming and Lexical Decision) were administered to children with reading
disability (RD), peers with average reading ability, and adults. Across tasks, there was an effect for transparency (i.e.,
better performance on stable than shift words) for both child groups and the adults. For the children, a significant interaction
was found between group and word type. Specifically, on the naming task, there was an advantage for the stable words, and
this was most noteworthy for the children with RD. On the lexical decision task, trade-offs of speed and accuracy were evident
for the child reader groups. Performances on the nonwords showed the poor readers to be comparable to the average readers
in distinguishing legal and illegal nonwords; further analyses suggested that poor readers carried out deeper processing of
derived words than their average reading peers. Additional study is needed to explore the relation of orthographic and phonological
processing on poor readers’ memory for and processing of derived words. 相似文献
17.
Stanislaw Schukajlow Dominik Leiss Reinhard Pekrun Werner Blum Marcel Müller Rudolf Messner 《Educational Studies in Mathematics》2012,79(2):215-237
In this study which was part of the DISUM-project, 224 ninth graders from 14 German classes from middle track schools (Realschule)
were asked about their enjoyment, interest, value and self-efficacy expectations concerning three types of mathematical problems:
intra-mathematical problems, word problems and modelling problems. Enjoyment, interest, value and self-efficacy were assessed
before and after a ten-lesson teaching unit promoting modelling competency related to the topics “Pythagoras’ theorem” and
“linear functions”. The study aimed to answer the following research questions: (1) Do students’ enjoyment, value, interest
and self-efficacy expectations differ depending on the type of task? (2) Does the treatment of modelling problems in classroom
instruction influence these variables? (3) Are there any differential effects for different ways of teaching modelling problems,
including a “directive”, teacher-centred instruction and an “operative-strategic”, more student-centred instruction emphasising
group work and strategic scaffolding by the teacher? The findings show that there were no differences in students’ enjoyment,
interest, value and self-efficacy between the three types of tasks. However, teaching oriented towards modelling problems
had positive effects on some of the student variables, with the student-centred teaching method producing the most beneficial
effects. 相似文献
18.
Filippo Camerota 《Science & Education》2006,15(2-4):323-334
This article explores the transmission of practical knowledge in the XV and XVI centuries. According to cosmographer Egnatio
Danti, optics and other mathematical sciences had “been banished” from the main philosophical schools of his period, and “the
little which remains to us is limited to some practical aspects learned from the mechanical artificers”. The “mechanical artificers”
were architects, painters and surveyors whose mathematical training constitutes the subject dealt with in this article. The
context of Danti’s remark was the letter to the “Accademici del Disegno” of Perugia which introduce his Italian translation
of Euclid’s Optics. After the great Medieval season of optical studies, in effect, this science progressed mainly through its practical applications,
especially through “that part of perspective which pertains to painting” (Piero della Francesca), and through the spread of
methods and instruments for measuring by sight. 相似文献
19.
20.
Margherita Orsolini Rachele Fanari Sara Cerracchio Luisa Famiglietti 《Reading and writing》2009,22(8):933-954
In this study we explore the development of phonological and lexical reading in dyslexic children. We tested a group of 14
Italian children who have been diagnosed with dyslexia and whose reading age is end of grade 1. We compared this group with
a group of 70 typically developing children who have been tested for reading at the end of grade 1. For each dyslexic child
we also selected a participant who was attending the same grade, was close in age, and showed typical reading development
when tested with a narrative passage reading task (Cornoldi, Colpo, & Gruppo MT, 1981) for correctness and reading speed. Children in this group are “same grade controls.” We used a reading task consisting of
40 three syllables words. A qualitative and quantitative method of coding children’s naming allowed us to distinguish several
components of their reading performance: the grapheme and word recognition, the size of orthographic units involved in the
aloud orthography–phonology conversion, the reading process used to recognize words. The comparison of the dyslexic group
with the reading age and the same grade control groups reveals different trends of delayed reading processes. Considering
dyslexic children’s chronological age, lexical reading is greatly delayed. Considering dyslexic children’s reading age, the
type of reading process that is more deeply delayed is phonological reading. The rate of fragmented phonological reading (i.e.,
a type of syllabized phonological reading) is much higher in dyslexic children compared to the reading age group, suggesting
that some factors undermine the possibility of internalizing the orthography–phonology conversion and the blending processes. 相似文献