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检索条件"主题词=Programmable Logic Arrays"

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Data driven structural similarity: A Distance measure for adaptive linear approximations of time series

Data driven structural similarity: A Distance measure for ad...

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International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management (IC3K)

作者： Victor Ionescu Rodica Potolea Mihaela Dinsoreanu Computer Science Department Technical University of Cluj-Napoca Cluj-Napoca Romania

ISBN: (纸本)9781509019670

Much effort has been invested in recent years in the problem of detecting similarity in time series. Most work focuses on the identification of exact matches through point-by-point comparisons, although in many real-world problems recurring patterns match each other only approximately. We introduce a new approach for identifying patterns in time series, which evaluates the similarity by comparing the overall structure of candidate sequences instead of focusing on the local shapes of the sequence and propose a new distance measure ABC (Area Between Curves) that is used to achieve this goal. The approach is based on a data-driven linear approximation method that is intuitive, offers a high compression ratio and adapts to the overall shape of the sequence. The similarity of candidate sequences is quantified by means of the novel distance measure, applied directly to the linear approximation of the time series. Our evaluations performed on multiple data sets show that our proposed technique outperforms similarity search approaches based on the commonly referenced Euclidean Distance in the majority of cases. The most significant improvements are obtained when applying our method to domains and data sets where matching sequences are indeed primarily determined based on the similarity of their higher-level structures.

关键词： Time series analysis Time measurement Linear approximation programmable logic arrays Shape Search problems Piecewise linear approximation

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A preliminary study on joint to joint control master device for single port laparoscopic surgery robot

A preliminary study on joint to joint control master device ...

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International Conference on Ubiquitous Robots and Ambient Intelligence (URAI)

作者： Seongbo Shim Taehun Kang Daekeun Ji Jaesung Hong Department of Robotics Engineering DGIST Daegu Korea

Unlike da Vinci surgical system, in a single port laparoscopic surgery (SPLS) robot, all joints of the slave robot are located inside abdomen. Therefore, all joints of the slave robot should be controlled separately for surgical safety. In this study, a master device was developed for PLAS which is one of the slave robots for SPLS. Because all joints of the slave robot are inserted in the human body during the surgery, we need to develop a master device which can control each joint of the robot separately. We focused on developing the master device in a perspective of the following factors. First, DOF and structure of a target slave robot must be analyzed. Then, according to ergonomics, joint matching among the master, slave, and human arm should be considered. Through this matching, each joint motion of the slave robot can be decoupled. In addition, we proposed mapping factors, which can minimize the trajectory error of the tips between the master and the slave. We confirmed that each joint of the slave robot can be manipulated separately and that both tips have similar trajectory.

关键词： Robots Trajectory Minimally invasive surgery Jacobian matrices Mathematical model programmable logic arrays

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Modeling Product-Line Architectural Knowledge

Modeling Product-Line Architectural Knowledge

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Hawaii International Conference on System Sciences

作者： Jessica Diaz Jennifer Perez Juan Garbajosa Carlos Fernandez-Sanchez Technical University of Madrid (UPM) CITSEM ETSISI

ISBN: (纸本)9781479973682

The documentation of architectural knowledge helps to understand and prevent the violation of previous decisions. Documenting the architectural knowledge of product lines is more complex than in the case of single-product architectures because it requires considering the existing variability in a product family. This implies having the capability to describe design decisions and relationships related to variability. This paper presents the concept of Product-Line Architectural Knowledge (PLAK): the knowledge of product line architecture and its variability. This concept has been realized through a solution based on models and traceability between models called the PLAK Model.

关键词： Computer architecture programmable logic arrays Documentation Analytical models Software Connectors Home automation

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Piecewise Chebyshev factorization based nearest neighbour classification for time series

Piecewise Chebyshev factorization based nearest neighbour cl...

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International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management (IC3K)

作者： Qinglin Cai Ling Chen Jianling Sun College of Computer Science and Technology Zhejiang University Hangzhou China

ISBN: (纸本)9781509019670

In the research field of time series analysis and mining, the nearest neighbour classifier (1NN) based on dynamic time warping distance (DTW) is well known for its high accuracy. However, the high computational complexity of DTW can lead to the expensive time consumption of classification. An effective solution is to compute DTW in the piecewise approximation space (PA-DTW), which transforms the raw data into the feature space based on segmentation, and extracts the discriminatory features for similarity measure. However, most of existing piecewise approximation methods need to fix the segment length, and focus on the simple statistical features, which would influence the precision of PA-DTW. To address this problem, we propose a novel piecewise factorization model for time series, which uses an adaptive segmentation method and factorizes the subsequences with the Chebyshev polynomials. The Chebyshev coefficients are extracted as features for PA-DTW measure (ChebyDTW), which are able to capture the fluctuation information of time series. The comprehensive experimental results show that ChebyDTW can support the accurate and fast 1NN classification.

关键词： Time series analysis Feature extraction Chebyshev approximation Turning Fluctuations Time measurement programmable logic arrays

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FEA study of damage and cracking risks in BEoL structures under copper wirebonding impact

FEA study of damage and cracking risks in BEoL structures un...

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Thermal, Mechanical and Multiphysics Simulation and Experiments in Micro-Electronics and Micro-Systems EuroSimE

作者： J. Auersperg D. Breuer K.V. Machani S. Rzepka B. Michel Micro Materials Center at Fraunhofer ENAS Chemnitz Germany GLOBALFOUNDRIES Dresden Module One L.L.C & Co. KG Dresden Germany

With the recent increase in Gold (Au) wire cost; Copper (Cu) wire becomes an attractive way to manage overall package cost. On the other hand, Copper wire bonding introduces much higher mechanical impact to underlying BEoLstructures and actives because of the higher stiffness and lower ductility of Copper compared to Gold. These trends are accompanied by the application of new porous or nano-particle filled materials like low-k and ultra low-k materials for Back-end of line (BEoL) layers of advanced CMOS technologies. As a result, higher delamination and cracking risks in BEoLstructures underneath bonded areas represent an increasing challenge for the thermo-mechanical reliability requirements. To overcome the related reliability issues the authors performed a two level nonlinear FEM-simulation approach. Initially nonlinear axisymmetric modeling and simulation of the copper bonding process are coupled with a spatial simulation model of the whole BeoL and bond pad structure. Cracking and delamination risks are estimated by a surface based cohesive contact approach and the utilization of a crushing foam constitutive material model for ultra low-k materials.

关键词： Load modeling programmable logic arrays Vibrations Thermomechanical processes Mathematical model

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The Pong game implementation with the FRIQ-learning reinforcement learning algorithm

The Pong game implementation with the FRIQ-learning reinforc...

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International Carpathian Control Conference (ICCC)

作者： Tamás Tompa Dávid Vincze Szilveszter Kovács Department of Information Technology University of Miskolc Miskolc Hungary

This paper introduces a way to control the Pong game automatically with the usage of FRIQ-learning (Fuzzy Rule Interpolation-based Q-learning). The FRIQ-learning method can be a solution to such a problem which has a small state-space. The system starts with an empty knowledge base and the system constructs the final rule-base during the simulation, based on a reward used to solve the task. This way the method can find the required rules using the feedback provided by the environment. To correctly solve the problem the reward-function should be carefully defined for the corresponding problem (handling of the paddle in the Pong game in this case). After determining the required specifications (e.g. the actions and the effects of the actions) we used the FRIQ-learning framework to build a simulation application. FRIQ-learning can gather the required knowledge automatically in the form of a fuzzy rule-base, therefore it can be applied to such a system where the process of the exact operation is unknown. Our main goal is to show that the FRIQ-learning method is suitable to solve this problem by automatically constructing a sparse rule-base for Pong.

关键词： Learning (artificial intelligence) programmable logic arrays Games MATLAB

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Identification of the parametric array loudspeaker with a volterra filter using the sparse NLMS algorithm

Identification of the parametric array loudspeaker with a vo...

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IEEE International Conference on Acoustics, Speech and Signal Processing

作者： C. Shi Y. Kajikawa Dept. of Electr. & Electron. Eng. Kansai Univ. Suita Japan

ISBN: (纸本)9781467369985

Volterra filters can be applied to a wide range of nonlinear systems, keeping only the low order kernels to yield a good approximation. The parametric array loudspeaker (PAL), as a weak nonlinear acoustic system, is an attractive directional sound reproduction device. Volterra filters have been adopted in the linearization system of the PAL that efficiently reduces the nonlinear distortion with no need of solving the nonlinear acoustic equation. In this paper, the ultrasound-to-ultrasound Volterra filter is proposed, being inspired by the nonlinear acoustic principle, to provide a better systematic representation of the PAL. Experiment results are presented to prove the effectiveness of the proposed approach, where the sparse NLMS algorithm is carried out in the identification.

关键词： Parametric array loudspeaker Volterra filter sparse NLMS algorithm Nonlinear filters programmable logic arrays Nonlinear distortion LRIT1 gene SHCBP1 gene

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Electric actuating and optical waveguiding poly(DL-lactic acid) nanofibers

Electric actuating and optical waveguiding poly(DL-lactic ac...

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IEEE Conference on Electron Devices and Solid-State Circuits

作者： Yuya Ishii Taiki Nobeshima Sei Uemura Heisuke Sakai Mitsuo Fukuda Department of Electrical and Electronic Information Engineering Toyohashi University of Technology Toyohashi Japan Flexible Electronics Research Center National Institute of Advanced Industrial Science and Technology Tsukuba Japan School of Material Science Japan Advanced Institute of Science and Technology Nomi Japan

Electrospun nanofibers are fabricated from poly(DL-lactic acid) (PLA), and the piezoelectric-like response and waveguiding properties of these nanofibers are demonstrated. A sheet composed of randomly orientated PLA fibers sandwiched between electrodes exhibits a linear increase in thickness with increasing applied voltage. This indicates that the fibers act like a piezoelectric material. The waveguiding properties of the fibers when doped with an organic dye are investigated by aligning the fibers unilaterally. Photoluminescence from the dye propagates within the fibers, with an attenuation of -1 at 590-670 nm.

关键词： Conferences Electron devices Solid state circuits programmable logic arrays

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Search Based Design of Layered Product Line Architectures

Search Based Design of Layered Product Line Architectures

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IEEE Annual International Computer Software and Applications Conference (COMPSAC)

作者： Thainá Mariani Silvia Regina Vergilio Thelma Elita Colanzi Federal University of Parana Curitiba PR Brazil State University of Maringa Maringá PR Brazil

The adoption of the layered architectural style can improve the Product Line Architecture (PLA) design by providing a better organization of the elements, flexibility and maintainability. Search based optimization approaches can also benefit the PLA design, by generating PLA alternatives associated with the best trade-offs between different measures (fitness) related to cohesion, coupling and feature modularization. However, the usage of existing search operators changes the PLA organization, and consequently may violate layered rules, impacting negatively in the architecture understanding. In order to solve this problem, this work introduces search operators that consider the layered architectural style rules. Results show that the proposed operators contribute to obtain better solutions, maintaining the adopted style, with better or equivalent fitness values.

关键词： programmable logic arrays Unified modeling language Computer architecture Organizations Optimization Frequency modulation Graphical user interfaces

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Investigating gene expression array with outliers and missing data in bladder cancer

Investigating gene expression array with outliers and missin...

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IEEE International Conference on Bioinformatics and Biomedicine

作者： Stephane Chretien Christophe Guyeux Michael Boyer-Guittaut Regis Delage-Mouroux Francoise Descotes Laboratoire de Mathematiques de Besancon Universite de Franche-Comte FEMTO-ST Institute UMR 6174 CNRS DISC Computer Science Department Universite de Franche-Comte EA 3922/IFR133 Universite de Franche-Comte Universite de Franche-Comte Service de Biochimie et Biologie Moleculaire Sud Pavillon 3D Centre Hospitalier Lyon Sud

ISBN: (纸本)9781467368001

In this article, we present a methodology to perform selection among genes based on their expression in various groups of patients, in order to find new genetic markers for specific pathologies. Our approach is based on clustering the denoised data and computing a LASSO (Least Absolute Shrinkage and Selection Operator) estimator, in order to select the relevant genes. This latter belongs to the class of penalized regression estimators where the penalty is a multiple of the l_1-norm of the regression vector. Gene markers of the most severe tumor state are finally provided using the proposed approach.

关键词： programmable logic arrays

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