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Mathematical model for the research of environmental changes on the basis of biological indication

Mathematical model for the research of environmental changes...

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International Forum on Strategic Technology, IFOST

作者： V. N. Popov Y. V. Volkov V. A. Tartakovsky I. A. Botygin Department of Computer-Aided Design Systems National Research Tomsk Polytechnic University Tomsk Russia

ISBN: (纸本)9781467317726;9781467317702

The mathematical models and their software implementation (computer models) for image analysis of annual tree rings to detect changes in environmental parameters reflected in the tree growth are provided. The fundamental properties of radial tree growth including the growth monotony in time and space and the speed limit are based on annual tree rings modeling, whereas the changes in wood density are considered as spatio-temporal oscillatory process. The solution of two-dimensional image analysis task of the tree rings, specifically the azimuth calculation and the average width of the maximum annual tree rings growth, the calculation of index values of the increase in the width of annual tree rings are showed. The results of analysis of environmental heterogeneity obtained at image processing of annual tree rings and the connection of increment index for Siberian cedar and summer precipitation are provided. For practical implementation of models the functional structure of a distributed computing system to process dendroecological data on LAMP freeware platform was developed.

关键词： Vegetation Azimuth Mathematical model Indexes Noise Software Algorithm design and analysis

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Group-based discovery in low-duty-cycle mobile sensor networks

Group-based discovery in low-duty-cycle mobile sensor networ...

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2012 9th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2012

作者： Chen, Liangyin Gu, Yu Guo, Shuo He, Tian Shu, Yuanchao Zhang, Fan Chen, Jiming College of Computer Science Sichuan University China Singapore University of Technology and Design Singapore Department of Computer Science and Engineering University of Minnesota United States Department of Control Zhejiang University China

ISBN: (纸本)9781467319058

Wireless Sensor Networks have been used in many mobile applications such as wildlife tracking and participatory urban sensing. Because of the combination of high mobility and low-duty-cycle operations, it is a challenging issue to reduce discovery delay among mobile nodes, so that mobile nodes can establish connection quickly once they are within each other's vicinity. Existing discovery designs are essentially pair-wise based, in which discovery is passively achieved when two nodes are pre-scheduled to wake-up at the same time. In contrast, for the first time, this work reduces discovery delay significantly by proactively referring wake-up schedules among a group of nodes. Because proactive references incur additional overhead, we introduce a novel selective reference mechanism based on spatiotemporal properties of neighborhood and the mobility of the nodes. Our quantitative analysis indicates that the discovery delay of our group-based mechanism is significantly smaller than that of the pair-wise one. Our testbed experiments using 40 sensor nodes confirm our theoretical analysis, showing one order of magnitude reduction in discovery delay compared with traditional pair-wise methods with only 0.5%∼8.8% increase in energy consumption. © 2012 IEEE.

关键词： Sensor nodes

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IDAMC: A many-core platform with run-time monitoring for mixed-criticality

IDAMC: A many-core platform with run-time monitoring for mix...

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IEEE 14th International Symposium on High-Assurance Systems engineering, HASE 2012

作者： Motruk, Boris Diemer, Jonas Buchty, Rainer Ernst, Rolf Berekovic, Mladen Institute of Computer and Network Engineering Technische Universität Braunschweig Germany Department of Chip Design for Embedded Computing Technische Universität Braunschweig Germany

ISBN: (纸本)9780769549125

On a multi- or many-core platform that runs applications of different safety criticality (mixed-criticality), all applications have to be certified to the highest level of criticality, unless they are sufficiently isolated. Isolation enables individual certification of applications and cost-efficient re-certification of single applications after an update. We introduce a parameterizable and synthesizable many-core platform with a fast and scalable monitoring and control mechanism that supports safe sharing of resources. Our contribution is a step towards exploiting the benefits of multi- and many-core platforms for mixed-critical applications. © 2012 IEEE.

关键词： Criticality (nuclear fission)

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Data processing with time constraint using prediction algorithm in mobile environment

Data processing with time constraint using prediction algori...

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2012 15th International Symposium on Wireless Personal Multimedia Communications, WPMC 2012

作者： Chiang, Ding-Jung Wang, Ching-Sheng Chen, Chien-Liang Deng, Der-Jiunn Department of Digital Multimedia Design Taipei Chengshih University of Science and Technology Taipei Taiwan Department of Computer Science and Information Engineering Aletheia University Taipei Taiwan Department of Computer Science and Information Engineering National Changhua University of Education Taipei Taiwan

ISBN: (纸本)9789860334074

This paper describes data processing with real-time property based on prediction mechanism in wireless multichannel environments. Low bandwidth, unreliable wireless links, and frequent disconnections of mobile environments make it difficult to satisfy the timing requirements of supported strategies. This study investigates broadcast scheduling strategies for push-based broadcast with timing constraints in the form of deadlines, and proposes a prediction algorithm based on Kalman filter theory for this study. The proposed dissemination policy and adaptive bandwidth allocation scheme obtain sufficient conditions such that all the time-bounded traffic sources satisfy their timing constraints to provide various quality-of-service (QoS) guarantees in the broadcast period. Our goal is to identify scheduling algorithms for broadcast systems that ensure requests meet their deadlines. This study examines the performance of traditional real-time strategies and mobile broadcasting strategies, and demonstrates that traditional real-time algorithms do not always perform the best in a mobile environment. The proposed design indeed achieves good performance in mobile environments. © 2012 NiCT.

关键词： Kalman filters

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Study of the injection molding technology for the non-circular lens

Study of the injection molding technology for the non-circul...

引用

70th Annual Technical Conference of the Society of Plastics Engineers 2012, ANTEC 2012

作者： Lin, Chung-Chih Shie, Jen-Yu Peng, Hsin-Shu Dept. of Mech. and Computer-Aided Eng. National Formosa University Taiwan Dept. of Electro-Optical Engineering National Formosa University Taiwan Dept. of Digital Media Design and Management Far East University Taiwan

ISBN: (纸本)9781622760831

Compared to symmetrical and circular lenses, non-circular lenses have more issues on controlling process parameters during injection molding process. Unbalanced filling pattern and thickness variance in lens typically result in more defects which become a critical challenge in product developments. A study of non-circular lens with an aspherical contour through computer simulation assistance and design of experiments was presented. A non-circular lens and two convex lenses were assembled into a barrel to form an optical modulus for a mini projector. The optical characteristic of mini projector was dominated directly by the accuracy of the optical modulus. In this study, a reasonable injection speed which could reduce melt viscosity in molding process was calculated by simulation software and then design of experiments was conducted to investigate the influences of the molding conditions on the part quality experimentally. This study provides a systematical way to predict in which area a defect occurs and determine the optimal molding parameters based on simulation results and statistical experiments.

关键词： design of experiments

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A conceptual framework for pre deployment network analysis of specification driven systems

A conceptual framework for pre deployment network analysis o...

引用

2012 International Conference on computer and Information Science, ICCIS 2012 - A Conference of World engineering, Science and Technology Congress, ESTCON 2012

作者： Varshney, Gaurav Joshi, Ramesh Chandra Sardana, Anjali Natarajan, Swami Nathan Chaudhuri, Subhrojyoti Roy Department of Electronics and Computer Engineering Indian Institute of Technology Roorkee India Tata Research Development and Design Centre TCS Innovations Lab. Pune India

ISBN: (纸本)9781467319386

Model driven development is at peak now days, where an application/system executes on a model with its predefined specifications. The specifications are a collection of data acquisition, validation checks, state machine descriptions and auxiliary information that describe the behavioral aspects of the application/system under consideration. In such type of specification driven machine control systems there is a great opportunity for high level pre-deployment analysis based on the information about the characteristics of the system that inherently exist in the specification files that drive them, with extra specifications, based on the kind and domain of analysis one is interested in. This provides a great opportunity for analysis of system specifications before deployment, that can help to figure out whether they are correct or not. One such application that we found in this context is of analyzing the networking behavior of an application based on its specification. In this paper we present a Conceptual Framework for Pre Deployment Network Analysis of Specification driven Monitoring and Control system and prototype implementation of a tool that does a high level network analysis of a hypothetical specification based system based on GMRT system. The paper also describes the specification files which contain network and expert (usage context) specifications that are necessary for such an analysis. © 2012 IEEE.

关键词： Specifications

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E-beam lithography stencil planning and optimization with overlapped characters

E-beam lithography stencil planning and optimization with ov...

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作者： Yuan, Kun Yu, Bei Pan, David Z. Cadence Design Systems San Jose CA 95134 United States Department of Electrical and Computer Engineering University of Texas Austin TX 78731 United States

Electronic beam lithography (EBL) is one of the promising emerging technologies in the sub-22 nm regime. In EBL, the desired circuit patterns are directly shot into the wafer, which overcomes the diffraction limit of light in the current optical lithography system. However, the low throughput becomes its key technical hurdle. In the conventional EBL system, each rectangle in the layout will be projected by one electronic shot through a variable shape beam (VSB). This could be extremely slow. As an improved EBL technology, character projection (CP) shoots complex shapes, so-called characters, in one time, by putting them into a predesigned stencil. However, only a limited number of characters can be employed, due to the area constraint. Those patterns, not contained by any character, are still required to be written by VSB. A key problem is how to select an optimal set of characters and pack them on the CP stencil to minimize total processing time. In this paper, we investigate a problem of electronic beam lithography stencil design with overlapped characters. Different from previous works, besides selecting appropriate characters, their placements on the stencil are also optimized in our framework. Specifically, we propose a Hamilton-path-based iterative algorithm to handle 1-D stencil design problem, and an effective simulated annealing framework for the generalized 2-D case with an efficient look-ahead sequence pair evaluation technique. The experimental results show that, compared to conventional stencil design methodology without overlapped characters, we are able to reduce total projection time by 51%. © 2006 IEEE.

关键词： Simulated annealing

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Improved support vector machine wireless network security detection algorithm model

Improved support vector machine wireless network security de...

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2012 2nd International Conference on Electronic and Mechanical engineering and Information Technology, EMEIT 2012

作者： Lv, Xiujian Sun, Zhi Cheng Wang, Jing Shijiazhuang Vocational and Technology Institute Department of Information Engineering Shijiazhuang China Hebei College of Industry and Technology Department of Computer Technology Shijiazhuang China Shijiazhuang Engineering Vocational College Department of Art and Design Shijiazhuang China

ISBN: (纸本)9789078677604

This paper proposed a support vector machine SVM algorithm for WLAN intrusion detection, first calculates the information gain of network intrusion data, and selects the characteristics of properties having a greater impact on the classification from the raw data to optimize the parameters of SVM, Finally, an optimized SVM algorithm is used to detect the wireless network data to obtain the behavior of network detection. Simulation results show that model of SVM-based WLAN intrusion detection has a high correct detecting rate, a low negative rate and wrong alarm rate. © the authors.

关键词： Intrusion detection

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Construction of Lyapunov functionals for coupled differential and continuous time difference equations

Construction of Lyapunov functionals for coupled differentia...

引用

IEEE Annual Conference on Decision and Control

作者： Frederic Mazenc Hiroshi Ito Pierdomenico Pepe EPI INRIA DISCO L2S-CNRS-Supelec 3 rue Joliot Curie 91192 Gif-sur-Yvette France Department of Systems Design and Informatics Kyushu Institute of Technology 680-4 Kawazu Iizuka 820-8502 Japan Department of Information Engineering Computer Science and Mathematics center of excellence for research DEWS University of L'Aquila 67040 Poggio di Roio L'Aquila Italy

ISBN: (纸本)9781467357159

A new stability analysis technique for systems composed of a differential equation coupled with a continuous time difference equation is proposed. It is based on the explicit construction of Lyapunov functionals from the knowledge of Lyapunov functions for subsystems. Robustness results of iISS type are inferred from these functionals.

关键词： stability delay difference equation Lyapunov functional Difference equation FUNCTIONALS TimeDif delay Stability analysis Differential equations

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I/O efficient algorithms for block hessenberg reduction using panel approach

I/O efficient algorithms for block hessenberg reduction usin...

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1st International Conference on Big Data Analytics, BDA 2012

作者： Mohanty, Sraban Kumar Sajith, Gopalan Computer Science and Engineering Discipline PDPM Indian Institute of Information Technology Design and Manufacturing Jabalpur Jabalpur-482005 MP India Computer Science and Engineering Department Indian Institute of Technology Guwahati Guwahati-781039 Assam India

ISBN: (纸本)9783642355417

Reduction to Hessenberg form is a major performance bottleneck in the computation of the eigenvalues of a nonsymmetric matrix;which takes O(N 3) flops. All the known blocked and unblocked direct Hessenberg reduction algorithms have an I/O complexity of O(N3/B). To improve the performance by incorporating matrix-matrix operations in the computation, usually the Hessenberg reduction is computed in two steps: the first reducing the matrix to a banded Hessenberg form, and the second further reducing it to Hessenberg form. We propose and analyse the first step of the reduction, i.e., reduction of a nonsymmetric matrix to banded Hessenberg form of bandwidth t for varying values of N and M (the size of the internal memory), on external memory model introduced by Aggarwal and Vitter for the I/O complexity and show that the reduction can be performed in O(N3 / min{t,√ M}B) I/Os. © Springer-Verlag 2012.

关键词： Matrix algebra

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