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Interactive layout method for object diagrams of OMT 6

Interactive layout method for object diagrams of OMT

引用

6th Asia Pacific Software engineering Conference, APSEC 1999

作者： Noguchi, Takayoshi Tanaka, Jiro Doctoral Program in Engineering University of Tsukuba 1-1-1 Tennodai Tsukuba-shi Ibaraki305-8573 Japan Institute of Information Sciences and Electronics University of Tsukuba 1-1-1 Tennodai Tsukuba-shi Ibaraki305-8573 Japan

ISBN: (纸本)0769505090

Proposes a new layout method using the magnetic spring model for object diagrams used in the Object Modeling Technique (OMT). In our new method, there are two main characteristics. Firstly, our new method considers the interactive layout. User can use the layout function many times during the drawing of the diagram. The result of the layout is suitable for continuing to draw the diagram smoothly. Secondly, our method can avoid the overlapping of nodes with a new definition of the distance between nodes. We have implemented the new layout method into an object diagram-drawing CASE tool. We compare the results of the new layout method with results of the old layout method. We have made sure that our new layout method is more suitable for the interactive layout than the old layout method was, and that it avoids node overlaps. © 1999 IEEE.

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A quadratic spline function generator based on B-spline functions

A quadratic spline function generator based on B-spline func...

引用

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： M. Kamada H. Sakai K. Toraichi Institute of Information Sciences and Electronics University of Tsukuba Tsukuba Japan Doctoral Program in Engineering University of Tsukuba Tsukuba Japan

A function generator that converts a discrete time signal to its interpolation by a quadratic spline function with no phase distortions is described. The generator synthesizes the output as a linear combination of B-spline functions generated coherently and continuously. The method reduces the total scale of the circuitry and improves the accuracy in the final output waveform. An implementation of the spline function generator is described.< >

关键词： Spline Sampling methods Switching circuits Filters Phase distortion Interpolation Large-scale systems Circuit noise Signal generators Design methodology

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Reconfigurable architecture for probabilistic neural network system

Reconfigurable architecture for probabilistic neural network...

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IEEE International Conference on Field-programmable Technology (FPT)

作者： R. Mizuno N. Aibe M. Yasunaga I. Yoshihara Doctoral Program Systems and Information Engineering University of Tsukuba Japan Institute of Information Sciences and Electronics University of Tsukuba Japan Faculty of Engineering Miyazaki University Japan

Reconfigurable architecture for the probabilistic neural network (PNN) is proposed and the PNN hardware system is developed using FPGAs. In the system, preprocessing circuits as well as the PNN can be reconfigured adapting each task. Potential performance of the PNN cannot be brought out until the total reconfigurability including the preprocessing is achieved. The developed system shows high recognition accuracy with high processing speed for some image recognition tasks.

关键词： Reconfigurable architectures Neural networks Neural network hardware Kernel Field programmable gate arrays Counting circuits Image recognition Neurons Registers Systems engineering and theory

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Segmented attenuation map reconstruction from incomplete transmission data

Segmented attenuation map reconstruction from incomplete tra...

引用

IEEE Symposium on Nuclear Science (NSS/MIC)

作者： H. Kudo H. Nakamura Institute of Information Sciences and Electronics University of Tsukuba Tsukuba Japan Doctoral Program in Engineering University of Tsukuba Tsukuba Japan

Accurate reconstruction of attenuation maps from incomplete sinograms are required in some cases of SPECT and PET imaging. This paper proposes a new method to directly reconstruct segmented attenuation maps from the incomplete sinograms. The proposed method is based on an image labeling technique where an optimum label configuration minimizing some energy function is found by using a stochastic sampling with simulated annealing. Unlike ordinary image labeling techniques, however, the authors introduce a powerful constraint called the topology-preserving constraint. This constraint reduces the search space to a set of label configurations having the same topology as the known topology of the attenuation map in question. The experimental results demonstrate that the topology-preserving constraint is powerful enough to reconstruct accurate segmented attenuation maps from the incomplete sinograms. The proposed method is tested with simulated data and PET transmission data.

关键词： Attenuation Image reconstruction Image segmentation Positron emission tomography Labeling Topology Stochastic processes Image sampling Simulated annealing Testing

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An experimental study on a decision support in less predictable situations

An experimental study on a decision support in less predicta...

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IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： M. Itoh T. Inagaki Doctoral Program in Engineering University of Tsukuba Tsukuba Japan Institute of Information Sciences and Electronics University of Tsukuba Tsukuba Japan

An experimental study is conducted to investigate how decision support information should be given to a human operator in less predictable situations. Suppose an operator, who is controlling a plant, can identify the current state of the plant without any ambiguity but cannot predict the future state precisely. One of the most significant tasks imposed on the operator is to monitor the plant and to take an appropriate control action when necessary. We will examine in this paper what kind of information should be given for supporting the operator's decision making under uncertainty.

关键词： Cities and towns Humans Acceleration Supervisory control Fuels Monitoring Decision making Uncertainty Aircraft Aerospace control

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Reliable Collaborative Semi-infrastructure Vehicle-to-Vehicle Communication for Local File Sharing 15th

Reliable Collaborative Semi-infrastructure Vehicle-to-Vehicl...

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15th EAI International Conference on Collaborative computing: Networking, Applications and Worksharing, CollaborateCom 2019

作者： Mokhtar, Bassem Azab, Mohamed Fathalla, Efat Ghourab, Esraa M. Magdy, Mohamed Eltoweissy, Mohamed Electrical Engineering Department Alexandria University Alexandria Egypt Computer Engineering Program School of Engineering and Applied Sciences Nile University Giza Egypt Computer and Information Sciences Virginia Military Institute LexingtonVA24450 United States Department of Electrical and Computer Engineering Old Dominion University NorfolkVA United States College of Computing and Information Technology Arab Academy for Science Technology and Maritime Transport Alexandria Egypt

ISBN: (纸本)9783030301453

Recently, Vehicular Cloud Communication (VCC) has been gaining momentum targeting intelligent and efficient data transmission. VCC is a type of mobile ad-hoc network comprising heterogeneous vehicles sharing their resources to perform collaborative activities. In this paper, we propose a new semi-infrastructure file-browsing in order to provide Network as a service (NaaS) enabling internet-independent browsing. In our scenario, a central management platform plays the role of controlling and managing the selection of relaying vehicles supporting the source to destination file transmission procedure. Nagel-Schreckenberg rules for traffic cellular automata (CA) are used as the basis for our scenario simulation. Nagel-Schreckenberg rules simulate the behavior of a group of hypothetical vehicles moving across a highway. We study the reliability and efficiency of file transfer in such settings. Simulation results show that the number of selected relays required to establish the network highly impacts the probability of successfully sending the requested files. In addition, the distances between the selected relays influence the network throughput and the probability of network failure. Moreover, the density of relays strongly affects the overall delay that occurs due to the continuous re-transmission of the selected files among different hops. © 2019, ICST Institute for Computer sciences, Social Informatics and Telecommunications engineering.

关键词： Vehicle to vehicle communications

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A new approach to SPECT attenuation correction without transmission measurements

A new approach to SPECT attenuation correction without trans...

引用

IEEE Symposium on Nuclear Science (NSS/MIC)

作者： H. Kudo H. Nakamura Institute of Information Sciences and Electronics. University of Tsukuba Tsukuba Japan Doctoral Program in Engineering University of Tsukuba Tsukuba Japan

We propose a new approach to correct for nonuniform photon attenuation in SPECT imaging without transmission measurements. The new method can be considered a variant of F. Natterer's (1993) method based on the consistency condition. The method is based on estimating parameters of the attenuation map model such that the consistency condition is satisfied. However, to improve the accuracy and stability of Natterer's method, we introduce two new concepts in this problem. The first new concept is a new consistency condition based on the ordered subsets EM iterative attenuation correction, which is more informative that Natterer's one. The second new concept is a topologically constrained labeling method to estimate a segmented attenuation map. This labeling method allows to deal with complicated attenuation maps consisting of more than one region or having concave boundaries. The performance of the proposed method is tested with simulated data.

关键词： Attenuation measurement Image reconstruction Cost function Nonlinear equations Iterative methods Iterative algorithms Transforms Ellipsoids Spline

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Hardware implementation of a PCA learning network by an asynchronous PDM digital circuit

Hardware implementation of a PCA learning network by an asyn...

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International Joint Conference on Neural Networks (IJCNN)

作者： Y. Hirai K. Nishizawa Institute of Information Sciences and Electronics University of Tsukuba Tsukuba Ibaraki Japan Doctoral Program in Engineering University of Tsukuba Tsukuba Ibaraki Japan

We have fabricated a PCA (principal component analysis learning network in a FPGA (field programmable gate array) by using an asynchronous PDM (pulse density modulation) digital circuit. The generalized Hebbian algorithm is expressed in a set of ordinary differential equations and the circuits solve them in a fully parallel and continuous manner. The performance of the circuits was tested by a network with two microphone inputs and two speaker outputs. By moving a sound source right and left in front of the microphones, the first principal weight vector could continuously track the sound direction in real time.

关键词： Hardware Principal component analysis Field programmable gate arrays Pulse modulation Circuit testing Microphones Pulse circuits Digital modulation Modulation coding Digital circuits

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Position independent neuro pattern matching and its application to handwritten numerical character recognition

Position independent neuro pattern matching and its applicat...

引用

International Joint Conference on Neural Networks (IJCNN)

作者： Y. Hirai Y. Tsukui Institute of Information Sciences and Electronics University of Tsukuba Tsukuba Ibaraki Japan Doctoral Program in Engineering University of Tsukuba Tsukuba Ibaraki Japan

A novel one-dimensional pattern-matching neural network which matches an input to multiple candidates of the stored templates in parallel is proposed. It can find the best matching template, whose features are arranged in the same order as those of the input, regardless of positional differences between corresponding features. The proposed network is applied to handwritten numerical character recognition. Six kinds of features are extracted form the input pattern: closure, upward, downward, left and right orientations of line ends, and junction. From the two-dimensional feature distribution pattern, horizontal and vertical projection profiles are made. They are matched in the horizontal and vertical matching networks separately. The results of matching in the two networks are combined and categorized by a recognition network. 600 handwritten characters in the ETL-1 database were used as a learning set, and another 600 characters were used as an open set. The recognition rate for the learning set was 98.2% and that for the open set was 88.2%

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Classification of Multivariate Time Series Signals Using Self-Supervised Representation Learning for Condition Monitoring

Classification of Multivariate Time Series Signals Using Sel...

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Joint e-Manufacturing and Design Collaboration Symposium (eMDC) & International Symposium on Semiconductor Manufacturing (ISSM)

作者： Koichi Sumiya Sumika Arima Doctoral Program in Policy and Planning Sciences University of Tsukuba Tsukuba Japan Institute of Systems and Information Engineering University of Tsukuba Tsukuba Japan

ISBN: (数字)9798331510589

ISBN: (纸本)9798331510596

In the analysis of real-world data, two significant challenges often arise: high-dimensional signals and their temporal interactions. To address these issues and identify transitions in process conditions through end-to-end learning, we propose a self-supervised representation learning framework that conceptualizes signals as images. This straightforward approach classifies imaged signals as time-specific conditions by maximizing mutual information within a domain-specific feature space. We applied this methodology to two labeled open datasets and one unlabeled real-world process dataset, yielding promising results.

关键词： Representation learning Furnaces Time series analysis Self-supervised learning Glass Medical services Semiconductor device manufacture Turning Wool Mutual information

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