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International Conference on Computational Intelligence and Security

作者： Xiong Shi Xiaofeng Feng Jun Chen Department of Electrical & Information Engineering Wuhan Polytechnic University Wuhan China College of Naval Architecture and Power Naval University of Engineering Wuhan China

Spherical virtual space modeling using fisheye image was accomplished based on fisheye image mosaics and multi-viewpoint navigation was analyzed. Test results demonstrated that virtual browsing speed could be improved by using re-projection technology and browsing effect could also be improved by using scaling technology. Finally immerse sense in virtual environment was enhanced and good result was gained.

关键词： Navigation Brightness Space technology Pixel Marine animals Image fusion Virtual reality

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Assessment and calibration of numerical coupled models of a deep-draft semisubmersible platform based on model tests

Assessment and calibration of numerical coupled models of a ...

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20th International Offshore and Polar engineering Conference, ISOPE-2010

作者： Senra, Stael Ferreira Jacob, Breno Pinheiro Correa, Fabrício Nogueira Jacovazzo, Bruno Martins De Lima, Alex Leandro De Lacerda, Thiago Ângelo Gonçalves Fucatu, Carlos Hakio PETROBRAS Research and Development Center CENPES Rio de Janeiro RJ Brazil COPPE/UFRJ - Post-Graduate Institute Federal University of Rio de Janeiro Civil Engineering Department Rio de Janeiro RJ Brazil Polytechnic School University of São Paulo Department of Naval Architecture and Ocean Engineering São Paulo SP Brazil

ISBN: (纸本)9781880653777

This work presents the calibration, based on results of ocean basin tests, of numerical models of a deep-draft semi-submersible platform including mooring lines and risers. The models are generated with in-house Petrobras and commercial coupled programs. The programs consider different approaches in the hydrodynamic representation of the hull, including a classic Diffraction-Radiation model based in the Potential Theory, and a hybrid model that combines the Morison formulation with diffraction-radiation effects of potential damping and drift forces. The comparisons are evaluated in terms of statistical parameters and motion response spectra for wave-frequency and low-frequency components, and of force response spectra on selected lines. © 2010 by The International Society of Offshore and Polar Engineers (ISOPE).

关键词： Numerical models

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Study on Intelligent Hybrid Algorithm

Study on Intelligent Hybrid Algorithm

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International Conference on Electrical and Control engineering (ICECE)

作者： Jian Guo Fei Tan School of Civil Engineering and Architecture Wuhan Polytechnic University Wuhan China Department of Controlled Science and Engineering Huazhong University of Science and Technology Wuhan China

The radial basis function (RBF), which is well known dynamic neural network, has been improved to easily apply in dynamic systems identification. However, the RBF weights and thresholds, which are trained by the gradient descent method, will be fixed after the training completing. The adaptive ability is bad. To improve RBF performance of dynamic identification, a self-adaptive particle swarm optimization (SAPSO), which is a stochastic search algorithm, is employed to train and adjust RBF structure parameter online. The simulation experiments show that SAPSO-NN has less adjustable parameters, faster convergence speed and higher precision in the nonlinear function identification.

关键词： Artificial neural networks Heuristic algorithms Optimization Radial basis function networks Nonlinear systems Algorithm design and analysis Convergence

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80. Pollen cryo-bank establishment and application of traditional Chinese flowers

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Cryobiology 2011年第3期63卷 328-328页

作者： B.L. Li Y.L. Zhang H. Wang C.H. Song Y. Liu College of Landscape Architecture Beijing Forestry University Beijing 100083 China National Engineering Research Center for Floriculture Beijing 100083 China Institute of Plant Physiology & Ecology Shanghai Institute for Biological Science Chinese Academy of Science Shanghai 200231 China Department of Horticulture and Gardening Suzhou Polytechnic Institute of Agriculture Jiangsu 215008 China

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Determination of the slip surface by load data measurement system and strength reduction of 3D FEM

Determination of the slip surface by load data measurement s...

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International Conference on Computer engineering and Technology, ICCET

作者： Wen-jie Lei Ying-ren Zheng Xia-ting Feng Qingniu Wang School of Safety Science and Engineering Henan Polytechnic University Jiaozuo China Department of Millitary Architecture Engineering Logistical Engineering University of PLA Chongqing China The key Laboratory of rock and soil mechanics Chinese Academy and Sciences Wuhan China Department of Energy Science and Engineering Henan Polytechnic University Jiaozuo China

In order to know the variation of the slope stability under external slide thrust, the soil load cell was preferred on the test platform of large-scale physical model to measure the stress in the slope body for the first time. Adopting the method of limit analysis of FEM by step load, the The external slide thrust was enhanced step by step with the method of limit analysis of FEM by step loads, the limit condition of the slope body stabilized on the certain work condition could be gained in a certain time to a certain size of the thrust. The results of the two analysis method were shown out as follows. As the slide thrust was enhanced step by step, the soil stress in slope body was enhanced increased steadily. When the external thrust was increased to a certain magnitude, the tendency in of development of the soil stress in the slope body was inflected varied, which disclosed the structural changes and the stability progress state changed from steadily state to failure in the inner body of the slope. From the curve of the soil stress vs. time, the time and the location that the slide surface formed could be determined. The method of limit analysis of FEM by step load could be used to estimate the shape of the slide surface. The shape computed by FEM was identical to the measurement by the soil load cell.

关键词： Stability Data engineering Stress measurement Soil measurements Safety Shape measurement Programmable logic arrays Terrain factors Ant colony optimization Algorithm design and analysis

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Stabilisation of global greenhouse gas concentrations by planning carbon and energy budgets at city level: Case study of the iskandar development region, Malaysia

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HKIE Transactions Hong Kong Institution of Engineers 2010年第3期17卷 8-14页

作者： Fong, Wee Kean Ho, Chin Siong Lun, Yu Fat Matsumoto, Hiroshl CTI Engineering International Co Ltd Japan Department of Urban and Regional Planning Faculty of Built Environment Universiti Teknologi Malaysia Malaysia Wind Engineering Research Centre Tokyo Polytechnic University Japan Department of Architecture and Civil Engineering Toyohashi University of Technology Japan

For most of the developing countries, socio-economic development is very often the first priority in national development agenda, thus there are very limited actions on climate change mitigation. Malaysia is one of the fast growing developing countries in Asia. Although the Government recognises the importance of energy saving and emission control, there are still very limited policies to address climate change issues and so far no emission reduction target has been set. The main objectives of this study are thus to look into the long-term carbon budget and to examine the necessary energy budgets, based on the case study of the Iskandar Development Region (IDR). Attempts have been made to set the national emission budgets for Malaysia, and from there, city level carbon budgets for IDR were set. Subsequently, simulations using the System Dynamics based computer simulation model were carried out to estimate the necessary energy budgets to achieve carbon budgets for IDR.

关键词： Developing countries

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Assessment of natural and artificial ageing of glued laminated timber. Core drilling, shear and delamination tests

Assessment of natural and artificial ageing of glued laminat...

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11th World Conference on Timber engineering 2010, WCTE 2010

作者： Gaspar, Florindo Gomes, Augusto Cruz, Helena Polytechnic Institute of Leiria School of Technology and Management Morro do Lena Alto do Vieiro 2411-901 Leiria Portugal IST Technical University of Lisbon Department of Civil Engineering and Architecture Av. Rovisco Pals 1049-001 Lisboa Portugal LNEC Structures Department Av. do Brasil 101 P-1700-066 Lisboa Portugal

ISBN: (纸本)9781622761753

This paper describes the results obtained on glued laminated timber beams of maritime pine, with and without preservative treatment, exposed to natural outdoor environment as well as to artificial weathering. The assessment of glue lines' degradation due to ageing was investigated through the extraction and testing of core and block shear specimens, and delamination tests. The results highlight the different Performances of glulam made with various preservative treatments and cure temperatures, in terms of the measured delamination and shear strength after the ageing process. They also show that shear testing of drilled cores may be a promising tool in the assessment of glulam structures on site.

关键词： Timber

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Known User Continuous Authentication System

Known User Continuous Authentication System

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Consumer Communications and Networking Conference, CCNC IEEE

作者： Ines Brosso Fernando Ferreira Graca Bressan Wilson V. Ruggiero College of Computation and Informatics Mackenzie Presbyterian University Sao Paulo Brazil Laboratory of Computer Architecture and Networks Polytechnic School of São Paulo University Brazil Laboratory of Computer Architecture and Networks Department of Computer and Digital System Engineering Polytechnic of São Paulo University Brazil

This work presents KUCAS (Known User Continuous Authentication System), a work-in-progress security system, that has a continuous authentication mechanism of users in software application. The KUCAS system makes use of environmental context information, users behavior analysis, the behavior theories of Skinner and the Mathematical Confidence of Dempster-Shafer Evidences Theory, that establishes trust levels to authenticate the user by his behavior analysis, during an application software, in a specific domain of the computer networks, in a period of time. The dynamics of enclosed management in this system compares the current behavior with the user's previous behaviors description and with the trust restrictions. In case of indications of changes in the user's behavior, the system provides the behavior analysis of the user using database restrictions information. If there are uncertainties and divergences, mechanisms of security and alert signals are triggered.

关键词： Authentication Application software Information security Data security Information analysis Computer security Humans Communication system software Databases Context-aware services

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A Continuous Authentication System Based on User Behavior Analysis

A Continuous Authentication System Based on User Behavior An...

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International Conference on Availability, Reliability and Security, ARES

作者： Ines Brosso Alessandro La Neve Graça Bressan Wilson Vicente Ruggiero College of Computation and Informatic Mackenzie Presbyterian University Sao Paulo SP Brazil Department of Electrical Engineering Centro Universitário da FEI Sao Paulo SP Brazil Laboratory of Computer Architecture and Networks Department of Computer and Digital System Engineering Polytechnic School of São Paulo University Brazil Laboratory of Computer Architecture and Networks Department of Computer and Digital System Engineering Polytechnic School of São Paulo University Brazil

ISBN: (纸本)9781424458790

This paper presents a continuous authentication system based on user behavior analysis that makes use of environmental context information, users' behavior analysis and Neuro-Fuzzy Logic. This system must be able to acquire information in context, making them into a computational environment. This information is the basis of user behavior. The System, based on the evidences of the behavior, establishes if it can trust the user or not. According to the user behavior, levels of trust are released, to access the application software. Weights are attributed in the fuzzyfication process, according to the rules that were previously established for the parameters which help to establish the evidences of behavioral trust, in its different degrees. The neuro-fuzzy logic allows that the user behavioral database be continuously updated, interacting with the fuzzyfication mechanism, so as to keep trust levels updated according to the user behavior, in a more accurate and faithful way.

关键词： Authentication Application software Information analysis Information security Logic Signal analysis Humans Computer security Computer networks Electronic mail

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Learning Evolutionary Strategy for a Mobile Manipulator in Imitation Learned Tasks

Learning Evolutionary Strategy for a Mobile Manipulator in I...

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International Conference on Technologies and Applications of Artificial Intelligence (TAAI)

作者： Cesar Arismendi M.L. Mu–oz Dolores Blanco Luis Moreno Department of Systems Engineering and Automation Carlos III Technical University of Madrid Madrid Spain Department of Systems Engineering and Automation Carlos III University of Madrid Madrid Spain Department of Computers Architecture Faculty of Informatics Polytechnic University of Madrid Madrid Spain

ISBN: (纸本)9781424486687

A new algorithm based on Evolutionary Strategies is proposed for finding a robot manipulation path. Next scenario is considered: Given a learned Manipulation Path in the space of configurations, a real-time optimal path is calculated when mobile robot base is in a different position and orientation near to the original localization. The optimization problem is formulated as the minimization of the end-effector position and orientation error so as to ensure convergence towards the learnt path taking into account a time constraint. To solve the optimization problem an algorithm based on the basic Evolution Strategies (ES) scheme is used. ES is a stochastic direct search optimization method based on the evolution of a candidate solution population in an iterative process of mutation and selection. The algorithm avoids singularities since it does not require the use of the Jacobian matrix in the kinematic inversion. The methodology presented is validated in a simulation environment with the mobile manipulator MANFRED, developed in our lab.

关键词： Robot kinematics Manipulators Optimization Joints Kinematics Mobile robots

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