中学数学自主学习学案设计要点探析

随着我国素质教育的逐步推进,基础教育对学生自主学习的要求也越来越高,新一轮的课改对学生的自主学习能力也有了新要求,现代社会也越来越多的要求人们能够自觉、主动地进行知识获取与探索,能够根据实际生活的需要,结合自身特长,独立进行学习设计,并有效完成相关知识的学习,提高自身素质.对中学数学自主学习的学案设计进行研究,促进中学学生的自主学习是当前数学教学改革过程中的当务之急.一、中学数学自主学习学案设计现状我们国家正在实施的基础教育课程改革,

走出有效教学的误区

随着新课程的深入实施,旨在提高课堂教学效率的"有效教学"正成为当前基础教育教学领域最热门的口号和实践之一。人们对有效教学呈现出了前所未有的热衷和关注,然而对于什么是有效教学,在教学实践中如何评价教学效率,以及如何实现有效教学等问题,人们却好像并不是特别在意,甚至走进了有效教学的误区。

Semantic Knowledge Acquisition from Blogs with Tag-Topic Model

This paper focuses on semantic knowl- edge acquisition from blogs with the proposed tag- topic model. The model extends the Latent Dirichlet Allocation （LDA） model by adding a tag layer be- tween the document and the topic. Each document is represented by a mixture of tags; each tag is as- sociated with a multinomial distribution over topics and each topic is associated with a multinomial dis- trNution over words. After parameter estimation, the tags are used to descrNe the underlying topics. Thus the latent semantic knowledge within the top- ics could be represented explicitly. The tags are treated as concepts, and the top-N words from the top topics are selected as related words of the con- cepts. Then PMI-IR is employed to compute the re- latedness between each tag-word pair and noisy words with low correlation removed to improve the quality of the semantic knowledge. Experiment re- sults show that the proposed method can effectively capture semantic knowledge, especially the polyse- me and synonym.

Automated soil resources mapping based on decision tree and Bayesian predictive modeling

This article presents two approaches for automated building of knowledge bases of soil resources mapping. These methods used decision tree and Bayesian predictive modeling, respectively to generate knowledge from training data. With these methods, building a knowledge base for automated soil mapping is easier than using the conventional knowledge acquisition approach. The knowledge bases built by these two methods were used by the knowledge classifier for soil type classification of the Longyou area, Zhejiang Province, China using TM bi-temporal imageries and GIS data. To evaluate the performance of the resultant knowledge bases, the classification results were compared to existing soil map based on field survey. The accuracy assessment and analysis of the resultant soil maps suggested that the knowledge bases built by these two methods were of good quality for mapping distribution model of soil classes over the study area.

Multi-strategies in Case Based Design Knowledge Management on Web

Design knowledge management is very important toimprove the design process performance. The casebased design (CBD) is a methodology to followmankind's problem solving strategy, one of its aims isto realize the design knowledge reuse. This methodhas been used in many fields, but there are still somedifficulties that hindered its application. The first isabout the difficulty in the formalization of a designcase, especially representation of some experiencesthat was the weakness in former researches. The second is about the bottleneck of knowledge-acqulsition that results in lacking enough knowledge in the modification process.which may lead to unreliable results when automatic inference is applied.We proposed that modification should be done not by machines but by designers while the inference results can be used as a suggestion to designers.In this manner we integrated both case.based and rule-based methodologies together.The third difficulty relates to case evolution and customization.former CBD systems suffered from this problem.We proposed an agile case-template technique that overcomes the problem perfectly.To make users be able to define their own similarity rules we allow users to choose different parameter weights and fuzzy subjection functions of numeric parameters.The approach of this paper has been applied to an enterprise and the system is built on the Web.

Knowledge Management Practices for Improvement of Brazilian Hospital Websites

This work aims to verify how the Web portals of Universities Hospital located in the northeast of Brazil are contributing to the expansion of knowledge of its users from the analysis of interactive features associated with the three mechanisms of knowledge management： knowledge access （KA）, knowledge creation （KC）, and knowledge transfer （KT）. The study is exploratory, descriptive, and qualitative type, such as a survey, developed through an adaptation of a relevant research, which involves the standardization of data collection instruments （questionnaires and interviews） applied directly to persons of a specific population, to assess knowledge management tools present in the University Hospital portals in the northeast region of Brazil. The results indicated that the resources from knowledge access were more prevalent than the others, ratifying the results found in research developed in Asian and North American Hospital portals.

On Constructing the Cognitive Model of Knowledge Acquisition in Globalization-Oriented Study

This paper which is directed to constructing the cognitive model of knowledge acquisition in view of the increasing need of globalization-oriented study, points out features of globalization-oriented study, and proposes the importance and necessity for constructing the CMKAGS （cognitive model of knowledge acquisition in globalization-oriented study） which includes attention, background knowledge, and chunking memory that involves semantic chunking, information encoding as well as choice of information encoding. The cognitive model of knowledge acquisition in question aims at helping e-learners to memorize their learned knowledge and improve their studies effectively and efficiently, whether they study in enhanced conditions or in natural conditions

Clustering： from Clusters to Knowledge

Data analysis and automatic processing is often interpreted as knowledge acquisition. In many cases it is necessary to somehow classify data or find regularities in them. Results obtained in the search of regularities in intelligent data analyzing applications are mostly represented with the help of IF-THEN rules. With the help of these rules the following tasks are solved： prediction, classification, pattern recognition and others. Using different approaches---clustering algorithms, neural network methods, fuzzy rule processing methods--we can extract rules that in an understandable language characterize the data. This allows interpreting the data, finding relationships in the data and extracting new rules that characterize them. Knowledge acquisition in this paper is defined as the process of extracting knowledge from numerical data in the form of rules. Extraction of rules in this context is based on clustering methods K-means and fuzzy C-means. With the assistance of K-means, clustering algorithm rules are derived from trained neural networks. Fuzzy C-means is used in fuzzy rule based design method. Rule extraction methodology is demonstrated in the Fisher＇s Iris flower data set samples. The effectiveness of the extracted rules is evaluated. Clustering and rule extraction methodology can be widely used in evaluating and analyzing various economic and financial processes.

Design and Application of Homework Digitization Resources Based on Knowledge Management

Analyzing the education resource construction and management from knowledge management perspective is the hot spot and focus of current education research. We make the knowledge management concept of knowledge acquisition, knowledge application and knowledge creation as the core throughuot the whole process of homework management activities to realize the optimization of homework management process. It mainly illustrates the sharing design and application of homework digitization resources. The sharing and application of homework digitization resources will promote the accumulation of teaching knowledge, which has a guiding research significance for promoting the use of educational resources, the application of education knowledge and the virtuous cycle of transformation and accumulation.

Knowledge Barriers Based on Standards in Global Value Chain

The knowledge accumulation through knowledge acquisition and technological learning is a necessary condition for enterprise upgrading in global chains.The knowledge flow obstacle caused by the knowledge barriers is the major reason for low-locked in the global value chain based on the analysis of knowledge flow,where standard is one of the most cmmonly used knowledge barriers.In this regard,a standard strategy based on similar technology development can be adopted to step over knowledge barriers and achieve upgrading.

A study on the practical teaching mode of Chinese teaching in the framework of the national examination of teacher qualification certificate

the “Chinese curriculum standard” “advocated autonomy, cooperation and explore ways of learning”, “students can inquiry learning initiative, learning in practice, the use of Chinese society”, “the use of library network and other accommodation channels attempt inquiry reading”, “gradually cultivate the ability of the students” reading. Creative reading, and put forward the mechanism and the way of teaching, subject participation, which guide students sentiment in the inquiry, the creation in the inquiry, to improve Chinese accomplishment in the inquiry. The concept of modern education thought, teaching is not only a process of teaching and give to teachers, more important is to guide students to obtain knowledge and methods in the process of knowledge acquisition and learning ability of self inquiry. Inquiry teaching method for cultivating students’ thinking ability, the thinking activity of middle school students is a free, open, active, students should be given more opportunities, enough to think of and take the initiative to explore, in the exploration process, students need cooperation, interpretation and various concerted attempt to students learn to communicate with others through personal inquiry knowledge is to build up the students on their own initiative, students understand knowledge.

Guidance of Constructivist Theory for English Teaching

The traditional English teaching methods are mainly based on teachers＇ words and students＇ listening type. Neither the quality of teaching can be guaranteed, nor are students＇ thinking ability and innovation developed. To change this situation, many educators have done a lot of research and exploration from both theoretical and practical aspects, of which constructivist theory is one of main results. Constructivist theory emphasizes that leaming is a process of knowledge acquisition. Knowledge can not only get from teachers, but also requires learners to learn from others＇ help in some particular context, with the necessary leaming materials, and through a way of meaning construction. Besides, it has important reference and inspiration effects on discipline study and conducting educational research.

Skill Analysis of Highly Skilled Worker in Optical Fiber Fusion Splicing

In this study, information related to optical fiber fusion splicing skills is consolidated by extracting explicit knowledge of the proficiency levels of skilled technicians in two ways. The first is to visually capture and quantify those skills by identifying differences in the skill levels of a nationally certified technician and a highly skilled expert technician using motion capture software, the other is to explore the relevance of the operation and thinking processes by interviewing the expert technician and then attempt to quantify empirical tacit knowledge by an analysis of mobile tracking views using motion capture software. The results show that a technician＇s ability to engage in ＂sensory thinking＂, such as the proper management of visual and tactile cues, is the most important component of his or her proficiency during optical fiber fusion splicing operations, and it was clear that operations were complemented when work path movements were reduced.

Optimum Energy Harvesting for Series-Connected Power Sources with Uniform Voltage Distribution

This paper presents a power system architecture where SIPO （series-input parallel-output） converters are controlled to achieve uniform inpt voltages across their respective series-connected power sources while also tracking the system optimum power point; the system optimum power point is the maximum power drawn from the series-connected power sources while their voltages are kept uniformly distributed. With proper uniform input voltage distribution control, near maximum use of the power sources is achieved by employing only one MPT （maximum power tracking） controller instead of multiple MPT controllers dedicated for their respective power sources. Provided that the maximum power point voltages of the input power sources are similar, the resulting system architecture offers near-maximum power transfer with a lower parts count. A feasibility study using computer simulation has successfully validated two SIPO power architectures and their control concepts for optimum power transfer.

教材的“脸”在悄悄地改变

小学数学教材,也与其它学科一样,已随着教学改革的不断深化, 进行了多次的修改,无论是内容上还是体例方面,都发生了根本性的变化,可以说新的教材越来越符合小学生的认知规律。但是这并不意味着新教材就没有灵活使用的要求了,相反地在使用新教材的过程中,比以往有更高的要求,更丰富的内涵。我下面就从具体化、信息化、以及学生需求和实际应用这四个方面,谈谈本人对“如何用好用活教材”的体会。一、活用教材,要从具体化开始。活用教材的首要问题,就是教学素材的选择。教学过程是学生主动参与和自主探索的过程,要使学生在教学过程中处于主动的地位。

浅谈中学英语课堂教学评价策略

英语课堂教学评价是英语课堂教学活动的重要组成部分。教师的课堂教学评价直接影响教师的教学行为,进而影响学生的学习行为。英语课堂教学评价,是指课堂教学的情绪状态、交流状态,思维状态、学习达成状态即学生能否学得轻松、自然、注意力集中、求知欲强,课堂交流合作气氛是否浓厚,以及学生在学习过程中的行为表现、情绪体验、过程参与、知识获得和学习结果。因此,教师能否营造民主、宽松、和谐的氛围,形成相互尊重、信任、理解的课堂环境。