A new method is presented for analyzing document images and constructing a database from them. this method is implemented in an electronic library system named CyberMagazine, where document images are sequentially con...
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A new method is presented for analyzing document images and constructing a database from them. this method is implemented in an electronic library system named CyberMagazine, where document images are sequentially converted into database tuples by block segmentation, rough classification, and syntactic analysis. CyberMagazine's image understanding method combines the use of decision tree classification and syntactic analysis using a newly presented matrix grammar. In order to combine the classification and the syntactic analysis steps, the authors propose an augmentation technique for carrying out decision tree classification. Experimental results subsequently demonstrate that high understanding accuracy is obtained by adequate augmentation.
Aircraft vehicle management system (VMS) and subsystem design requirements emphasizing significant improvements in performance, maintainability, reliability and life cycle cost over existing subsystems, demand the imp...
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ISBN:
(纸本)0780313445
Aircraft vehicle management system (VMS) and subsystem design requirements emphasizing significant improvements in performance, maintainability, reliability and life cycle cost over existing subsystems, demand the implementation of design and analysistools which aid the aircraft VMS and subsystem designer in the process to optimize individual subsystem designs within the constraints of the overall aircraft configuration optimization. Modern design process incorporating a combination of new and existing software programs are being implemented at Rockwell international and other airframe manufacturers to provide designers with capabilities leading to significant productivity improvements. this paper describes the design philosophy and methodology and the preliminary mechanization of the 'top down' design process for aircraft subsystems.
We have been exploring the hypothesis that vision is an explanatory process, in which causal and functional reasoning about potential motion plays an intimate role in mediating the activity of low-level visual process...
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ISBN:
(纸本)0819413208
We have been exploring the hypothesis that vision is an explanatory process, in which causal and functional reasoning about potential motion plays an intimate role in mediating the activity of low-level visual processes. In particular, we have explored two of the consequences of this view for the construction of purposeful vision systems: Causal and design knowledge can be used to (1) drive focus of attention, and (2) choose between ambiguous image interpretations. An important result of visual understanding is an explanation of the scene's causal structure: How action is originated, constrained, and prevented, and what will happen in the immediate future. In everyday visual experience, most action takes the form of motion, and most causal analysis takes the form of dynamical analysis. this is even true of static scenes, where much of a scene's interest lies in how possible motions are arrested. this paper describes our progress in developing domain theories and visual processes for the understanding of various kinds of structured scenes, including structures built out of children's constructive toys and simple mechanical devices.
To better meet the expectations and requirements of its customers, EDF has, for several years, been making every effort to improve the quality of the electrical energy supplied. Ensuring the reliability of medium volt...
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ISBN:
(纸本)0852965656
To better meet the expectations and requirements of its customers, EDF has, for several years, been making every effort to improve the quality of the electrical energy supplied. Ensuring the reliability of medium voltage units is a key part of this strategy. this measure reduces long and short cut-outs that were proving to be an increasing problem for customers using sensitive production or management equipment based on modern technologies such as computing. the increased levels of reliability come as the result of new methods and tools for the diagnostics, upkeep and renewal of MV overhead networks. In this prospect, EDF has developed a method termed 'auscultation', which consists in analysing all the electrical incidents affecting a medium-voltage feeder and identifying the sources of transient faults. this diagnostics method can only be effective if it is through, and require time and a certain degree of experience on the part of the operators in charge of analysing the data. To generalize this method and improve its efficiency, the EDF R&D department has drawn up the specifications and modelled a tool for auscultation aid. the mock-up, produced using an expert system approach, enabled requirements to be clearly defined and suggested a number of possible solutions using current technology. the functions of the software product are described in detail below, together withthe initial operating results.
the construction of a dynamic cube network architecture that extends the capabilities of hypercube architectures with only a small increase in hardware complexity is described. the network is self-routing in the sense...
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the construction of a dynamic cube network architecture that extends the capabilities of hypercube architectures with only a small increase in hardware complexity is described. the network is self-routing in the sense that there is a simple distributed routing algorithm which guarantees optimal paths between any pair of the vertices. this, together with other improvements in embedding properties, makes the dynamic cube an attractive alternative to the ordinary hypercube for massively parallel architectures.< >
Our research assessed the ability of the theory of cognitive fit to explain the performance of certain display formats on multiattribute judgment tasks. this theory suggests that for most effective and efficient probl...
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One of the primary methods of instruction in business education is the case. However, some of the basic learning goals associated with case instruction are compromised by its form of presentation. We have used new for...
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In this study we develop a new approach to the problem of extracting meaningful information from samples of accounting reports. We show that Neural Network-like algorithms are capable of implementing this approach. Su...
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In order to develop renewable energy sources technology in power supply plants, it is necessary to provide designers withtools capable of recognizing at short notice any areas of convenience in its utilization, eithe...
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In order to develop renewable energy sources technology in power supply plants, it is necessary to provide designers withtools capable of recognizing at short notice any areas of convenience in its utilization, either as a stand-alone or as a hybrid (with generator back-up) project. Typical renewable sources considered are solar and wind energy, but the results are applicable to any other energy source. the block diagram of the plant includes renewable generator(s), storage battery, and standby diesel engine generator. At first, the authors developed an analysis based on a mathematical model that included only one renewable random source. this model related environmental statistical factors to the sizing parameters and consequently to the costs of each block. However, since the sizing is not univocally defined, the model takes the battery autonomy as 'variable' and executes on it an optimization process finalized to minimum overall cost. In conclusion, the resulting output gives either the optimized sizing parameters or the costs of each block. A step-by-step optimization procedure is described including annual cost vs. battery autonomy function consideration;mathematical approach to the environmental influence;sizing criteria of the renewable generator;the database utilized and its analysis;model algorithms;comparison between experimental and theoretical results;and the two renewable generators model.
the software tools discussed in this paper are programs written for a Macintosh computer. NIH IMAGE is a program for displaying and processing images, and for measuring images under direct operator control. MaxSpin is...
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the software tools discussed in this paper are programs written for a Macintosh computer. NIH IMAGE is a program for displaying and processing images, and for measuring images under direct operator control. MaxSpin is used to display three-dimensional graphics and perform rotations in real time. NCSA PalEdit is a palette editor and display utility. the tools augment the image acquisition and processing done on minicomputers having operating systems with virtual memory. the minicomputers are connected to microscopes and support the LISPIX image processing, system, which is written in FORTRAN and LISP. A computer network is used to transfer images between the minicomputers and the desktop computers.
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