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In recent years, the web has become one of the main carrier of social public opinion, so the network public opinion needed a new natural language processing technology to identify the information efficiently and accurately, analysis and classify the public opinions effectively. In this paper, the text semantic orientation analysis method is proposed based on Hidden Markov Model to improve the accuracy...
Peer interaction plays an important role during the learning process. Currently predominant paradigm of digital learning materials limits learners' interaction with their peers using traditional user interfaces. To cope with this problem, this study proposes an embodiment-based learning environment to facilitate more peer interactions. The effectiveness of the environment is evaluated by designing...
Structure, material and some methods on reducing the heat transfer of special constant temperature slots are discussed. These special constant temperature slots are used in high accuracy standard capacitors, and have the resolution of 0.002°C and the fluctuation of ±0.01°C. They can reduce capacitance variance of the standard capacitors when the environment temperature changes. Then the standard capacitors...
With the advancement of information and communication technologies, a great deal of learning resources can be easily accessed over the Internet, especially video-based materials. Most of them are recordings of speeches and instructions. Learners can also provide their feedback on a specific website or a learning management system. Besides, natural user interface (NUI) has become affordable which sheds...
E-book readers have the inherent advantage of affording learners both mobility and convenience. They can be considered ideal pedagogical tools for supporting learners¡¦ reading activities. In this study, the reading strategies SQ3R (Survey, Question, Read, Recite and Review) with the guidance mechanism were integrated into the e-book reading environment for assisting learners in their reading processes...
The vibrating screen is the important industrial equipment that is used to sort and clean the granular materials. Screening results of the granular materials is directly affected by working state of vibrating screen. The detecting device that was used to detect working state of vibrating screen was developed with miniaturization, intelligence and high integrated level. Triaxial acceleration sensor...
The airflow of air curtain installed on the shearer carrys a part of dust produced by the shearer to the driver side under the entraining action. So, for further improvement on the dust-isolation effect, the authors put forward to adopt the rotating air curtain to prevent entainment dust from being carried into the driver side and enhance dust control. Through adding a short falling curtain at the...
With the research and development of chess robot and machine vision, chess robot with visual function has recently received an increasing interest in the community. This paper introduces the chess system of dual-robot coordination based on vision and the process of visual system structure, gives the coordinates translation from computer and image coordinates to actual coordinates. And in the process...
A dataset can be called imbalanced if at least one class of the data is represented by significantly less number of samples than the others. Imbalanced data generally exists in the real world. The classification performance of traditional machine learning algorithm is hampered in the classification tasks of imbalanced dataset. Support Vector Machines (SVM) is a new kind of machine learning method...
The traditional network drawing method is limited to artificial drawing and artificial experience etc. Aimed at these problems exist in construction schedule management, network planning software is the key to improve the design efficiency and management of the project. In this research, the principle of network planning technique, drawing methods of bar chart and network graph, the characteristics...
Reflection plays an important role in improving learning performance. Hence, this study attempts to explore whether learners' reflection levels can be improved when reflection teaching strategies fit with learners' thinking styles in a web-based learning environment. Three reflection teaching strategies, namely constructive, guiding, and inductive, were designed to match with three thinking styles,...
In order to calibrate the frequency dependence of ac standard resistor more accurately, improvements of double helix standard resistor and Kelvin resistance bridge at NIM are made and described in this paper. The experimental results show that the dc resistance stability of the AC/DC calculable resistor is enhanced by one order and the measurement uncertainty of the bridge is decreased.
With the popularity of network education and the development of network information management technology, the application of E-commerce system based on network becomes more and more extensive. On this open condition of web, the need of security of E-commerce system accordingly is higher than before. Considering on this, this article has brought out a series of security problem-solving plan based...
This paper introduces a high speed data acquisition system based on NIOS II, especially focuses on the development process of NIOS II soft-core in data acquisition system. Acquisition data is transferred to computer for displaying and analysising by USB interface. Acquisition rate is 250MSPS, the real-time and low-pass filter is used as well, the acquisition data is stored in the RAM first, then processed...
In this study, a framework based on the theory of planned behavior was proposed to find out the major factors which could have influences on learners' knowledge sharing intentions. A field survey has been conducted with 150 learners who had experiences in web-based learning. The proposed hypotheses were examined by structural equation modeling. According to the analysis results, we have found that:...
As the access engine of a spatial database, spatial database indexing technology is an important mechanism related to how to improve the spatial database information processing and information management performance, is also at an important stage of research and discussion. This paper starts with the mainstream spatial database index technology which is generally accepted by the current industry,...
In this paper, firstly, we propose a dynamic classroom teaching idea which is a main trend for model classroom instruction ideal. Secondly, we focus on study and analysis of classroom instruction approach from three aspects: heuristic teaching method, interactive teaching method and teaching language. Thirdly, based the multimedia teaching measure, we present an interactive action learning method,...
At present, China is universally short of professional computer room managers and the modern management of the environment seems especially important, which makes studying and developing a stable, advanced, effective and high performance price ratio environmental monitoring system extremely necessary. Combined with the production practice of hydraulic power plants, this paper proposes a brand new...
Matlab has big and powerful functions to scientific calculation. The Matlab applications that use the capabilities of the World Wide Web to send data to Matlab for computation and to display the results in a Web browser were studied by using Matlab Web server. A real physical experiment data treatment system adopted browser/server networking technique based on Matlab Web server has been developed...
Social presence is considered as an essential element to promote social interaction. With the development of online synchronous learning, learners can conduct cyber face-to-face communication with other participants. When social cues are delivered by computer devices in real-time, it becomes a real possibility for students to experience actual learning atmosphere while still retaining the flexibility...
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