The authors propose three strategies that are designed to enhance students' understanding and problem-solving ability in introductory mechanics courses: (1) employing multiple-method problem-solving, in which stud...
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Some real problems are more naturally modeled by hybrid Bayesian networks that consist of mixtures of continuous and discrete variables with their interactions described by equations and continuous probability distrib...
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Some real problems are more naturally modeled by hybrid Bayesian networks that consist of mixtures of continuous and discrete variables with their interactions described by equations and continuous probability distributions. However, inference in such general hybrid models is hard. Therefore, existing approaches either only deal with special instances, such as Conditional Linear Gaussians (CLGs), or approximate a general model with a restricted version and then perform inference on the simpler model. However, results thus obtained highly depend on the quality of the approximations. This paper describes an importance sampling-based algorithm that directly deals with hybrid Bayesian networks constructed in the most general settings and guarantees to converge to the correct answers given enough time.
For room temperature operation and reproducibility of single electron transistors (SETs), we propose a fabrication method of an SET with a self-aligned quantum dot. The quantum dot is formed by selective etch of a sil...
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For room temperature operation and reproducibility of single electron transistors (SETs), we propose a fabrication method of an SET with a self-aligned quantum dot. The quantum dot is formed by selective etch of a silicon nanowire on a planarized surface and subsequent deposition and etch-back of poly-silicon. The device is named as PQD-SET, i.e., poly-silicon quantum dot SET. PQD-SET shows clear Coulomb oscillation at room temperature.
Fiber reinforced polymer (FRP) composites offer very high strength-to-weight and stiffness-to-weight ratios. As a result, the aerospace industry is making a major effort to incorporate an increasing number of composit...
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Knowledge elicitation is difficult for expert systems that are based on probability theory. The elicitation of probabilities for a probabilistic model requires a lot of time and interaction between the knowledge engin...
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It is important for students getting suitable feedback information when either they are doing or completing a learning activity. This research tries to know what kind of feedback message is really useful to students. ...
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It is important for students getting suitable feedback information when either they are doing or completing a learning activity. This research tries to know what kind of feedback message is really useful to students. For this purpose, this paper develops a workable e-learning environment with feedback mechanism to gather the learning effects of students with different kinds of feedbacks. The experiment involves five fifth-grade classes and divides five classes into three different groups. The students in the control group have no feedback and students in the other two groups have different kinds of feedback messages. The analysis of experiment data contains two parts: the first one evaluates the feedback efficiencies for all groups;and, then all students will be separated into three clusters based on their academic achievement in order to do further analysis.
Finding a boat in wind and current is an age old problem that puzzled many people throughout history. It is only until recently a simple theory is developed to allow efficient and accurate prediction of the boat's...
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ISBN:
(纸本)1934272256
Finding a boat in wind and current is an age old problem that puzzled many people throughout history. It is only until recently a simple theory is developed to allow efficient and accurate prediction of the boat's drift trajectory. Such theory could be developed using simple physics and algebra. In this paper, we will describe the derivation of the theory that would give the boat's trajectory in terms of different types of boat condition under given wind field and current field. We will show that the relationship is versatile, and could be used for practical application. We will further implement the results in computer animation setting so that the results can be obtained easily for a given application. The paper demonstrates the power of mathematics and technology to solve problem of boat drift of search and rescue.
Reference architectures are the basis for application instantiation in both Domain engineering and Product Line contexts. They are created based on domain requirements, commonalities, and variability. Considering that...
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Accurate base-assignment in repeat regions of a whole genome shotgun assembly is an unsolved problem. Since reads in repeat regions cannot be easily attributed to a unique location in the genome, current assemblers ma...
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In order to assist driver's vision, a real-time recognition system for traffic signs is proposed. After detecting sign candidates, biologically inspired opponent-color filters are used to extract symbol parts of s...
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ISBN:
(纸本)9781617387777
In order to assist driver's vision, a real-time recognition system for traffic signs is proposed. After detecting sign candidates, biologically inspired opponent-color filters are used to extract symbol parts of signs. After normalizing the size of symbol, structural features are calculated to identify the sign. 5572 segmented images are used to design the algorithm. In a real-time system, the same sign in a sequence of frames is tracked, and a majority vote is used to integrate the recognition results. For test data, 93.8% recall rate and 99.3% precision rate could be attained. In-vehicle experiment also showed high recall and precision rates.
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