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181.
A clinical rationale for assessing rapid automatized naming in children with language disorders 总被引:1,自引:0,他引:1
Three continuous rapid naming tasks (Semel, Wiig, & Secord, 1995) were administered to 2,450 American, English-speaking, academically achieving individuals with typical language development and intellectual ability (ages 6 to 21 years) and 136 individuals with primary language disorders (LD; ages 6, 7, 9, 11, 12, 15-16). Naming time in seconds differed significantly (p < .01) between the groups for color naming (Task 1) at age 12, shape naming (Task 2) at age 6, and color-shape naming (Task 3) at ages 6, 7, 9, and 12. Naming accuracy did not differ significantly (p > .01) between groups at the majority of the age levels compared. In the normative group, naming speed increased with age in a monotonic progression. The developmental trajectory in the LD group was essentially parallel, but elevated. The percentages of individuals who failed the naming-time criteria for Task 3 (color-shape naming) differed significantly in the two groups at all ages compared (p < .05). These findings indicate that the requirements for two-dimensional, continuous naming (Task 3 color-shape naming) resulted in reduced naming speed (longer total times) and interference with fluency in language production in about half of the clinical sample. 相似文献
182.
Atara Sivan Arie Cohen Dennis W. K. Chan Yee Wan Kwan 《Learning Environments Research》2017,20(2):189-198
The Questionnaire on Teacher Interaction (QTI) is a teacher–student relationship measure whose underlying two-dimensional structure is represented in a circumplex model with eight sectors. Using Smallest Space Analysis (SSA), this study examined the circumplex structure of the Chinese version of the QTI among a convenience sample of 731 primary-school students in Hong Kong. The study revealed that the SSA solution fits the circumplex structure of the Model for Interpersonal Teacher Behavior and uncovered a two-dimensional solution yielding five sectors in a clockwise direction: Strict, Leadership-Helpful/Friendly-Understanding, Student Responsibility/Freedom, Uncertain, and Admonishing-Dissatisfied. While the Leadership-Helpful/Friendly-Understanding sector was the largest, the Student Responsibility/Freedom sector was the smallest, with few items constituting it. For the two dimensions, the vertical dimension was named Structure Clarity, with adherence to external structure (Strict sector) at one extreme and lack of structure (Uncertain sector and Student Responsibility/Freedom sector) at the other extreme. The horizontal axis was labelled Attitude Valence, with benevolent valence (Leadership sector, Helpful/Friendly sector and Understanding sector) at one end and malevolent valence (Admonishing sector and Dissatisfied sector) at the other end of the axis. The positioning of the five sectors in the present study is in line with the factor structure that was often found in previous research on the circumplex model. By presenting a somewhat different interpretation of the two dimensions and some additional items, we hope that future research will verify our suggestions across different sociocultural settings. 相似文献
183.
This paper critically evaluates the Hong Kong government's recent attempt to introduce cross-curricular themes into the school curriculum. It is argued that the policy failed to have a significant impact because many of its key elements defined the themes as marginal and dispensable. Moreover, the policy embodied a discourse which portrayed teachers as empowered and, consequently, as the primary source of problems of its implementation. 相似文献
184.
185.
This study measures the success of using a collaborative and competitive video game, named Space Race, to teach computing to first year engineering students. Space Race is played by teams of four, each with their own tablet, collaborating to compete against the other teams in the class. The impact of the game on student learning was studied through measurements using 485 students, over one term. Surveys were used to gauge student reception of the game. Pre and post-tests, and in-course examinations were used to quantify student performance. The game was well received with at least 82% of the students that played it recommending it to others. In some cases, game participants outperformed non-participants on course exams. On the final course exam, all of the statistically significant (p<0.05) comparisons (42% of the relevant questions) showed a performance improvement of game participants on the questions, with a maximum grade improvement of 41%. The findings also suggest that some students retain the knowledge obtained from Space Race for at least 7 weeks. The results of this study provide strong evidence that a collaborative and competitive video game can be an effective tool for teaching computing in post-secondary education. 相似文献
186.
187.
Songlin Wo 《Journal of The Franklin Institute》2007,344(2):97-106
This paper addresses the problem of robust stabilization for uncertain discrete-time singular large-scale systems with parameter uncertainties. The system under consideration is not necessarily regular. The parameter uncertainties are assumed to be time invariant, but norm-bounded. The purpose of the robust stabilization problem is to design state feedback controllers such that, for all admissible uncertainties, the closed-loop system is regular, causal and stable. In terms of strict LMIs, sufficient conditions for the solvability of the problem is presented, and the parameterization of desired state feedback controllers is also given. A numerical example is given to demonstrate the applicability of the proposed design approach. 相似文献
188.
Mark J. W. Lee Catherine McLoughlin Anthony Chan 《British journal of educational technology : journal of the Council for Educational Technology》2008,39(3):501-521
Podcasting allows audio content from one or more user-selected feeds or channels to be automatically downloaded to one's computer as it becomes available, then later transferred to a portable player for consumption at a convenient time and place. It is enjoying phenomenal growth in mainstream society, alongside other Web 2.0 technologies that enable Internet users to author and distribute rich media content quickly and easily. Instead of using the technology for the mere recording and dissemination of lectures and other instructor-centred information, the project reported on in this article focused on enabling students to create their own podcasts for distribution to their peers. The article describes how engaging in the podcasting exercise promoted collaborative knowledge building among the student-producers, as evidenced through focus-group interviewing and an analysis of the products of their shared dialogue and reflection. The findings suggest that the collaborative development of audio learning objects enabling student conceptualisations of disciplinary content to be shared with peers is a powerful way of stimulating both individual and collective learning, as well as supporting social processes of perspective-taking and negotiation of meaning that underpin knowledge creation. 相似文献
189.
Peter Kutnick Zhiyong Zhu Cecilia Chan Rosanna Yuen-Yan Chan Betty Pok-Yee Lee Veronica Ka Wai Lai 《Compare》2018,48(4):608-629
School-based pipelines/routes for university and technical engineering education are recognised as important for economic development and the high-school years are critical for shaping students’ career aspirations and attitudes. This study examined a range of attitudes/experiences on the aspirations of secondary students to pursue engineering education and vocation. Experiential/attitudinal aspects covered demographic characteristics, family/school support, practical learning experiences, curricular/extra-curricular experiences, attitudes, perceptions and engineering-efficacy that may affect aspirations. A validated questionnaire capturing these variables was administered to respective samples of secondary school students from four Chinese geo-engineering regions (Beijing, Guangzhou, Hong Kong and ShanXi; 5965 students) that represent differing degrees of industrialisation. Comparative analyses across regions show ‘doing’ engineering is key to motivating students’ aspirations; while regional variations suggest that schooling and family factors are generally more significant in industrialising Mainland cities, and extracurricular opportunities and personal factors are more significant for students in post-industrial Hong Kong. 相似文献
190.
Character of HBV (hepatitis B virus) polymerase gene rtM204V/I and rtL180M mutation in patients with lamivudine resistance 总被引:2,自引:0,他引:2
Objectives: To investigate the relationship between HBV (hepatitis B virus) polymerase gene 180 and 204 sites mutation and lamivudine resistance. Methods: One hundred forty-one patients with lamivudine resistance after lamivudine treatment and 60 chronic hepatitis B patients without lamivudine treatment were enrolled in this study. The serum HBV DNA mutation was analyzed by sequence detection via polymerase chain reaction (PCR). The sequences of the same patient were analyzed before and after lamivudine treatment. Results: One hundred and nine lamivudine resistance patients had HBV YMDD (tyrosine-methionine-aspartate-aspartate) mutation. Among them, 45 patients had rtL180M/M204V mutation (41.28%), 28 patients had rtL 180M/M204I mutation (25.70%) and 36 patients had rtM204I mutation (33.02%). There were 6 patients with rtL180M mutation in 32 lamivudine resistance patients. Sixty chronic hepatitis patients without lamivudine treatment had no mutations. Conclusions: HBV mutations, which play an important role in lamivudine resistance usually locate at polymerase gene 204 site; 180 site mutation was also observed in these patients. Evaluation of the anti-virus therapy by surveillance of the two sites mutations is of importance. 相似文献