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1.
Our food comes in different forms.We eat food made from rice and wheat.We also eat vegetables and fruits, eggs, fish and meat.Fishermen catch fish for us.Most fruits can be eaten fresh. Some vegetables can also be eaten fresh.We can buy most of our food from wet markets.  相似文献   

2.
结束了12月刊的工作,我们似乎提前步入了崭新的2005年!兴手翻阅2004年的12期杂志,最为抢眼的就是那12对亮相于封面的妈妈和宝宝了。这个充满希望的岁末年头,也让我们不禁惦念起了这些曾为杂志增光添彩的Model。在我们一同走过的这一年里,不知这些可爱的宝贝都有了些什么长进?于是我们拨通了12位"星妈"的电话,以期与这12位Model宝宝携手走向2005!  相似文献   

3.
The Munich Model of Giftedness (MMG) by Heller and his colleagues, developed for the identification of gifted children, is adapted and expanded, with the aim of making it more universally usable as a model for the pathway from talents to performance. On the side of the talent-factors, the concept of multiple intelligences is introduced, and the moderating factors proposed in the MMG are discussed and categorized. The environmental moderators are interpolated as to incorporate not only “school-settings” but also “work-settings”.  相似文献   

4.
Jerome Model和Horace Model是两种截然不同的翻译模式,但是其目的都是为翻译服务。本文就两种翻译模式的核心与其在翻译实践中的应用来比较两种翻译模式的可行性和实用性,并提出对待不同的文本,需要采用不同的翻译模式来达到翻译的目的。  相似文献   

5.
Key elements of the structure and function of models in mathematics and science are identified. These elements are used as a basis for discussing the development of model‐based reasoning. A microgenetic study examines the beginnings of model‐based reasoning in a pair of fourth‐ and fifth‐grade children who solved several problems about chance and probability. Results are reported in the form of a cognitive model of children's problem‐solving performance. The cognitive model explains a transition in children's reasoning from tacit reliance on empirical regularity to a form of model‐based reasoning. Several factors fostering change in children's thinking are identified, including the role of notations, peer interaction, and teacher assistance. We suggest that model‐based reasoning is a slowly‐developing capability that emerges only with proper contextual and social support and that future study should be carried out in classrooms, where these forms of assistance can also be part of the object of study.

Model‐based reasoning is a significant intellectual milestone because it bridges the worlds of personal, intuitive knowledge, on the one hand, and mathematical‐scientific theory, on the other. However, across disciplines, consensus is still forming about what model‐based reasoning comprises, and there is little knowledge about its ontogenetic origins or how it develops. We consider analogy as the core of modeling, because in model‐based reasoning a system in one domain is used to understand a system in another. To understand how models come to play a role in reasoning, it is important to initiate study of their origins. Accordingly, we report a microgenetic study examining the beginnings of model‐based reasoning in a pair of young children solving problems about chance and probability. In this study we are engaged in the enterprise of modeling the development of modeling. That is, we report our results in the form of a cognitive model of children's problem‐solving performance that explains a transition in reasoning from a tacit reliance on empirical regularity to a form of model‐based reasoning. It is important to note the two distinct meanings for the term model used in this article. The first describes how children come to understand and appropriate a system of reasoning exemplified in practices of modeling. The second describes a research tool, a model of human reasoning—specifically, how children in this study began to use models of probability to reason about uncertain events. In this report, we use the terms model or model‐based reasoning to refer to the former interpretation, whereas references to a cognitive model denote the simulation of children's thinking—in this case, implemented as a computer program.

Before describing the empirical work, we first identify some key elements of the structure and function of models. Next, these elements of modeling are used as the basis for generating some conjectures about the development of model‐based reasoning. We describe a task that we used as a window to understanding progression in student reasoning toward reliance on models as tools for thought. We present our rationale for developing cognitive models of student performance and explain some choices concerning the implementation of the cognitive model reported here. Finally, we turn to the children's performance on chance and probability tasks and explain how that performance illuminates both what children do not understand about models and the kinds of relevant knowledge that they are acquiring.  相似文献   

6.
ANewMultimediaSynchronizationModelSongJun(宋军)GuGuanqun(顾冠群)(DepartmentofComputerScienceandEngineering,SoutheastUniversity,Na...  相似文献   

7.
《中国教育网络》2008,(10):80-80
作为全球最小能运行Vista系统的整机,OQO Model 02借助“威盛中国芯”UMD解决方案的优势,将重量控制在了454克,体积只有5英寸。今天就让我们一起来看看它是如何将精彩的Vista世界变小,如何可以轻巧地握在掌上。  相似文献   

8.
Detecting objects of interest from a video sequence is a fundamental and critical task in automated visual surveillance. Most current approaches only focus on discriminating moving objects by background subtraction whether or not the objects of interest can be moving or stationary. In this paper, we propose layers segmentation to detect both moving and stationary target objects from surveillance video. We extend the Maximum Entropy (ME) statistical model to segment layers with features, which are collected by constructing a codebook with a set ofcodewords for each pixel. We also indicate how the training models are used for the discrimination of target objects in surveillance video. Our experimental results are presented in terms of the success rate and the segmenting precision.  相似文献   

9.
Having researched for many years, seismologists in China presented about 80 earthquake prediction factors which reflected omen information of earthquake. How to concentrate the information that the 80 earthquake prediction factors have and how to choose the main factors to predict earthquakes precisely have become one of the topics in seismology. The model of principal component-discrimination consists of principal component analysis, correlation analysis, weighted method of principal factor coefficients and Mahalanobis distance discrimination analysis. This model combines the method of maximization earthquake prediction factor information with the weighted method of principal factor coefficients and correlation analysis to choose earthquake prediction variables, applying Mahalanobis distance discrimination to establishing earthquake prediction discrimination model. This model was applied to analyzing the earthquake data of Northern China area and obtained good prediction results.  相似文献   

10.
Most electronics products use PCB to carry electronic circuits. This paper classifies information contained in PCB-based electronic circuits into several models: geometry model, physics model, performance model and function model. Based on this classification, a multi-information model of product is established. A composite model of product is also created based on object-orientation and characteristics of the product. The model includes a 3D geometry model, a physics model with integrated information that can be divided into microscopic and macroscopic information, a generalized performance model and a function model that are from top to bottom. Finally, a multi-unit analysis is briefly discussed.  相似文献   

11.
曲婷是南京市外国语学校高中二年级学生。2005 年8月她被国际文化交流组织AFS选送到美国学习交流一年。AFS国际文化交流组织成立于1914年,总部设在美国纽约,是目前全世界历史最悠久、影响力最大的文化交流组织。曲婷经过学校推荐,在AFS中国学生冬令营选拔赛中荣幸入围,并被选送到美国,住在美国弗吉尼亚州Woodbridger的一个友好家庭里,就读于弗吉尼亚州Gar-Field High School。Gar-Field High School坐落在美国首都华盛顿郊区,是美国的一所著名中学,有 2000多名学生,但华裔学生只有两人,一名是香港移民,一名就是曲婷。  相似文献   

12.
第一卷(三部分,共115分)第一部分:听力(共两节,满分20分)第一节(共5小题,每题1分,满分5分) 听下面5段对话,每段对话后有一个小题,从题后的A,B,C三个选项中选出最佳选项。1. How long has the woman kept her bicycle?A. Four years. B. Five years. C. Six years.2.What does the woman want to do?A.She wants to prepare supper. B She wants to stay at home.C. She wants to go out for supper. 3. Where is Mr Baker?A. At his office. B. At the travel company. C. Out to lunch.  相似文献   

13.
Traditional portfolio theory assumes that the return rate of portfolio follows normality ,However,this assumption is not true when derivative assets are incorporated,In this paper a portfolio selection model is devel-oped based on utility function which can captue asymmetries in random variable distributions.Other realistic conditions are also considered ,such as liabilities and integer decision variables,Since the resulting model is a complex mixed-integer nonlinear programming problem ,simulated annealing algorithm is applied for its solution.A numerical example is given and sensitivity analysis is conducted for the model.  相似文献   

14.
在“世界变小了”的年代里,语言的交际显得格外重要。九年制义务教育中初中英语课本的编写,就是以情景为基础的。它源于生活,反映生活,要求教师在教学中能以听说领先,培养学生的听说能力、交际能力和语言的应用能力。怎样把课上得生动活泼,使学生在一个特殊的语言环境中,能在听、说、读、写几方面都取得理想的效果,从而打好扎实的语言基础,这就要求教师在备课中多花一番功夫。在新教材的课本中,每课课文后都配有 Drills,并且按照内容和情景,分 Model1,Model2……,在每个Model 中都配有一些图片和相应的词汇。材料贴近生  相似文献   

15.
区域农作物秸秆资源收集已成为秸秆规模化综合利用的瓶颈问题,为了合理收集秸秆资源,降低运输成本,基于Model Builder建模生成器与Python脚本功能对农作物秸秆资源收集选址及路径优化分析,并以江川县理论秸秆资源量的收集运输过程为实验案例,完成选址、最短路径分析、最佳运输路线规划。结果表明,该研究对秸秆资源合理收集具有较好的现实指导意义。  相似文献   

16.
向家佳  马超 《海外英语》2012,(7):166-167,177
The research tries to deplore the two translation models which are Jerome Model and Horace model with the translation of Chinese word yisi,and then concludes that the two kinds of models should be used in different situation after taking other elements just like context,culture,and the innate discrepancy of way of expression in Chinese and English into concern.  相似文献   

17.
基于Noisy-Channel Model的句子压缩方法   总被引:1,自引:0,他引:1  
压缩技术是自然语言处理的一个重要应用方向,句子的自动压缩是文本压缩的第一步。当今在这个领域的前沿技术中,大多是根据概率句法分析进行筛选。在这篇文章中,我们探究一种基于Noisy-Channel Model句子压缩方法。  相似文献   

18.
MathematicalModelofWeightinEvaluationSystemSunLu(孙璐)DengXuejun(邓学钧)(TransportationColege,SoutheastUniversity,Nanjing210018)A...  相似文献   

19.
Abstract

This study assessed the level of scientific and natural resource knowledge that fourth-, eighth-, and eleventh-grade students in Maine possess concerning acidic deposition. A representative sample of public school students (N = 175) was interviewed on twelve concept principles considered critical to a full understanding of the acidic deposition problem. These included geological, meteorological, ecological, political, and economic concepts. Student knowledge was rated for each concept principle on a scale of complete, high partial, low partial, or no understanding. Common misconceptions were also noted. Generalized correct concept statements of current student knowledge are reported, as well as generalized missing concepts. Our conclusions have implications for teaching about acidic deposition and the design of environmental education curriculum materials based upon student knowledge. This information can help teachers better instruct students about current environmental problems and thus help learners gain an appreciation for the complex and multidisciplinary nature of science and the environment.  相似文献   

20.
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