For the large numbers of material classification coding rules and components in manufacturing enterprises, a computer-aided material classification coding model is proposed, in order to improve the inputting efficienc...
详细信息
ISBN:
(纸本)9783037852897
For the large numbers of material classification coding rules and components in manufacturing enterprises, a computer-aided material classification coding model is proposed, in order to improve the inputting efficiency of part codes. Based on the analysis of the material classification and coding rule for mechanical product, four types of code segments which suited for computer assisted are put forward. The application and database storage models of the coding rule are built up. Moreover, the paper describes the computational workflow of computer-aided coding and its kernel algorithm to acknowledging the related classified segment. The effectiveness and modularity of the prototype system is illustrated by the implementation in an electronics manufacturing corporation.
For the large numbers of material classification coding rules and components in manufacturing enterprises, a computer-aided material classification coding model is proposed, in order to improve the inputting efficienc...
详细信息
For the large numbers of material classification coding rules and components in manufacturing enterprises, a computer-aided material classification coding model is proposed, in order to improve the inputting efficiency of part codes. Based on the analysis of the material classification and coding rule for mechanical product, four types of code segments which suited for computer assisted are put forward. The application and database storage models of the coding rule are built up. Moreover, the paper describes the computational workflow of computer-aided coding and its kernel algorithm to acknowledging the related classified segment. The effectiveness and modularity of the prototype system is illustrated by the implementation in an electronics manufacturing corporation.
It is a laborious task for teachers to detect plagiarism in source codes produced by the students in programming classes. It is also difficult to distinguish between plagiarism and coincidental similarity in these sou...
详细信息
It is a laborious task for teachers to detect plagiarism in source codes produced by the students in programming classes. It is also difficult to distinguish between plagiarism and coincidental similarity in these source codes, since they are (1) often too short to extract enough algorithmic features and (2) obviously similar to. each other because they are produced for the same purpose. We propose a new method to measure similarity between source codes to detect source code plagiarism. Our method does not make pair-wise comparisons to find copied fragments among different students' works;rather, it compares the coding style of a newly submitted source code with a number Of source codes that have been produced by the same author. The coding style-a superficial feature appearing in source codes produced by the same author-is represented by a set of HMM-based stochastic models called "coding models" and utilized to make author identifications. We conducted an experiment and confirmed that the coding models could distinguish between source codes produced by different students, even if they were algorithmically quite similar to one another, thus indicating that our method can provide useful information for teachers to detect in-class source code plagiarism.
To better understand short-term memory for temporal intervals, we re-examined the choose-short effect. In Experiment 1, to contrast the predictions of two models of this effect, the subjective shortening and the codin...
详细信息
To better understand short-term memory for temporal intervals, we re-examined the choose-short effect. In Experiment 1, to contrast the predictions of two models of this effect, the subjective shortening and the coding models, pigeons were exposed to a delayed matching-to-sample task with three sample durations (2.6 and 18s) and retention intervals ranging from 0 to 20s. Consistent with the coding model, the results suggested a sudden forgetting of memories for duration. In Experiment 2, to test the confusion hypothesis, the characteristics of the ITI and the retention interval differed. Contrary to the confusion hypothesis, a choose-short effect was obtained. In both experiments, a test with only two of the three comparison keys was performed. The results suggest three effects that may be controlling the birds' responses: stimulus generalization when no retention interval is present;an increase in random responding at longer retention intervals;and, similarly, an increase in preference for the "short-sample" key at longer retention intervals. (C) 2010 Elsevier Inc. All rights reserved.
Source code plagiarism is becoming one of the most serious problems in academia. There have been many proposed methods that attempt to detect source code plagiarism in programming classes. Most of them extract algorit...
详细信息
Source code plagiarism is becoming one of the most serious problems in academia. There have been many proposed methods that attempt to detect source code plagiarism in programming classes. Most of them extract algorithmic features from the source code and measure the similarity between them. These methods show high levels of accuracy in evaluation experiments, and however, it is concerning that the similarity detected by the methods might not be caused by plagiarism. As a result, we propose a method called the CM Algorithm, which utilizes a student's coding style, the way the student writes source code, to check whether the source code submitted by the student was produced by him/her. In this paper, we propose a combined method that measures the similarity between source codes by using SIM [7], one of the well-known in-class source code plagiarism detection systems, and then checks the outputs of SIM against our improved CM Algorithm. The new method is expected to reduce false positives in plagiarism detection systems. This paper also gives a detailed explanation of the improved CM Algorithm, which assumes fluctuations in the source code produced by a student's coding style.
To support Earth system modeling, we propose a discrete global grid system that expresses multi-resolution spatial data. Specifically, a unified coding model that expresses a grid of nodes, edges, and cells is constru...
详细信息
To support Earth system modeling, we propose a discrete global grid system that expresses multi-resolution spatial data. Specifically, a unified coding model that expresses a grid of nodes, edges, and cells is constructed for a triangular discrete global grid system. To fulfill the requirements of practical applications, we design a code-based topological query method for this grid system and an algorithm to transform between grid codes and geographic coordinates. We evaluate the Global Finite Volume Community Ocean model (Global-FVCOM) on the triangular discrete global grid system in the proposed uniform coding model. The ocean tidal waves simulated by the Global-FVCOM running on the coded grid are then compared with results obtained using a traditional irregular spherical grid system, and the results display comparable accuracy. The uniform coding model proposed in this paper provides a triangular discrete global grid system that can represent multi-resolution spatial data and can be used in Earth system models. This unified coding model can also be applied to the geographic coordinate system made up of latitudes and longitudes, as well as diamond and hexagonal grids.
暂无评论