共查询到20条相似文献，搜索用时 890 毫秒
1.
European Journal of Psychology of Education - Whereas much research on interest development focuses on single, predefined, and generic objects of interest (e.g., science) in specific contexts... 相似文献
2.
INTRODUCTION When constructing complete 3D models, multi- ple color texture maps are often necessary. Suppose that the object of interest is fixed and images of it are acquired by one or more cameras from different po- sitions and directions. The viewpoints and the illu- mination may be different for each acquisition. The geometric model of the object may come from merging of several 3D models. The 2D-3D registra-tion between the textures and the geometric model is done by a previous st… 相似文献
3.
4.
Four conditioned suppression experiments with rats, using an ABC renewal design, investigated the effects of compounding the target conditioned excitor with additional, nontarget conditioned excitors during extinction. Experiment 1 showed stronger extinction, as evidenced by less renewal, when the target excitor was extinguished in compound with a second excitor, relative to when it was extinguished with associatively neutral stimuli. Critically, this deepened extinction effect was attenuated (i.e., more renewal occurred) when a third excitor was added during extinction training. This novel demonstration contradicts the predictions of associative learning models based on total error reduction, but it is explicable in terms of a counteraction effect within the framework of the extended comparator hypothesis. The attenuated deepened extinction effect was replicated in Experiments 2a and 3, which also showed that pretraining consisting of weakening the association between the two additional excitors (Experiments 2a and 2b) or weakening the association between one of the additional excitors and the unconditioned stimulus (Experiment 3) attenuated the counteraction effect, thereby resulting in a decrease in responding to the target excitor. These results suggest that more than simple total error reduction determines responding after extinction. 相似文献
5.
For the multilingual author, switching between two or more languages is not an arbitrary act, nor is it simply an attempt to mimic the speech of his or her community; code‐switching results from a conscious decision to create a desired effect and to promote the validity of the author's heritage language. This article looks at code‐switching in literary texts between Spanish and English, English and Chinese, and English and Jemez, a Native American language. Incorporating native and heritage languages along with English within a literary work, usually through code‐switching, creates a multiple perspective and enhances an author's ability to express his or her subject matter. 相似文献
6.
Metacognition and Learning - The literature on calibration suggests that students consider a multitude of factors when they self-evaluate task performance. Nevertheless, few studies have focused on... 相似文献
7.
马洪海 《信阳师范学院学报(哲学社会科学版)》2002,22(4):98-100
汉语里存在着一种特殊的复句－重叠复句，这纲一般语法书上论述的并列复句不同，重叠复句前后分句不是原义的简单重复，而是在语义上有所发展，它具有强调的功能，特别适宜抒发强烈的感情，在文艺体作品中普遍运用，具有独特的语用价值和修辞效果。 相似文献
8.
9.
10.
11.
12.
Ben A. Williams 《Learning & behavior》1989,17(2):223-233
Previous research has produced conflicting results regarding the effects of component duration on interactions in multiple schedules. In Experiment 1, potential sources of this conflict were evaluated. Both the effects of absolute reinforcement rate and carry-over effects (hysteresis) from a preceding condition were isolated. When 10-sec components were used, the sensitivity of relative response rate to relative reinforcement rate was affected very little by hysteresis effects and absolute reinforcement rate, but it was systematically reduced as a function of the number of prior conditions. Sensitivity to relative reinforcement rate was also substantially higher with the 10-sec components than with 2-min components. In Experiment 2, this effect of component duration was decomposed into two separate effects. Contrast effects during presentation of a target component with a constant reinforcement rate were greater the shorter the target component was itself; but they were smaller the shorter the alternative component in which reinforcement rate was varied. The latter effect was smaller and more unreliable across subjects. The existence of these two separate effects demonstrates that the usual method of studying component duration—that is, holding all components equal in duration—systematically causes underestimation of the effects of the component duration, and obscures the different processes controlling the two effects. 相似文献
13.
目前对语言交际功能的研究日益突出。运用主述位理论对语言进行的动态研究，对当前中学英语测试中选择题最佳答案的确定十分有利。语言学理论对英语教学越来越重要，中学英语教师应加强语言学理论的学习与应用。 相似文献
14.
为了使数字水印实现多种功能,提出了一种能在同一音频信号中同时嵌入多个水印的新方法.首先,载体音频信号被分隔成指定长度的帧,并且所有成员水印被编码成一个混合水印.然后,利用回声隐藏技术将混合水印中的二进制比特嵌入到音频信号帧中.水印提取不需要原始音频信号.为了提高水印算法的提取正确率和抵御常规信号处理的鲁棒性,功率倒谱的自相关被用于检测携带水印的音频信号帧中的回声延时以提取出混合水印,并且相应的解码算法被用于分离成员水印.计算机仿真结果表明所提出的水印算法对常规的信号处理,如Mp3压缩、重采样、重量化、低通滤波以及白噪声具有很强的鲁棒性. 相似文献
15.
Genetic linkage analysis is a means of localizing genes to specific chromosomal regions. Localization of genes influencing specific reading disability (dyslexia) can lead to characterization of the phenotypic effects of each gene and to early diagnosis of children at risk. Previous studies using the family study LOD score method of linkage analysis have identified two chromosomal regions that may contain genes influencing dyslexia. The present study examines the sib pair method of linkage analysis, which has several advantages over the LOD score method. In particular, the mode of inheritance does not need to be specified and diagnosis of parents is not required, but it is a less powerful technique. Using the same population as the previous studies (with less than 200 sib pairs) and two different means of diagnosis of dyslexia, the sib pair analysis was able to detect the same suggested linkages as the LOD score method, plus a possible third region. This confirms that the sib pair method is an effective means of screening for linkage with reasonable sample sizes. 相似文献
16.
17.
Automated collaborative filtering has become a popular technique for reducing information overload. We have developed a new method for recommending items using multiple agents. The agents were established by employing the fuzzy C-means clustering technique. We employ these agents collaborating each other to get recommendation for users. The results were evaluated by using MovieLens movie＇s rating data. It is shown that the algorithm is an effective metrics in collaborative filtering. 相似文献
18.
冉才 《淮南师范学院学报》2014,16(6):121-123
交响诗《铁道游击队》以历史事实为表现内容,并设计出符合表现形象需要的主题,通过主题自由变奏手法,使主题变形为奏鸣曲式的各个结构段落,生动表现出这些内容。旨在分析该交响诗的主题设计手法以及作曲家是如何通过一元主题变形技术而表现出这些形象的。 相似文献
19.
20.
以霍华德·伽德纳(HowardGardener)的多种智力元素理论为基础,分析了如何利用9种智力元素解决教学过程中遇到的问题,并对利用不同的智力元素开拓更深层、更丰富且具有独特个性的学习方法进行了探讨。采用Lazear提出的循序渐进方法,对教学的四个阶段,即唤醒智力元素、扩大智力元素、智力元素传授以及智力元素迁移分别进行了阐述。 相似文献