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2010 IEEE International Energy Conference and Exhibition, EnergyCon 2010

作者： Schulze, Matthias Gasparovic, Goran Lee, Jieun High Voltage Laboratory Swiss Federal Institute of Technology Zurich Physikstrasse 3 8092 Zurich Switzerland Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture University of Split R. Bokovia b. b. 21000 Split Croatia Dept. of Computer Science Korea Advanced Institute of Science and Technology Guseong-dong Yuseong-gu Daejeon 305-701 Korea Republic of

ISBN: (纸本)9781424493807

The network model bases upon the energy hub concept, which was developed by the Vision of Future Energy Networks (VoFEN) research group at ETH Zurich in the last years. Keynote of the concept is a combined optimization of different energy carrier. Synergetic effects are expected to give unusual optimization results, when allowing any possible energy conversion inside a specific area that constitute the hub. Costs for the energy consumption or production are generally used as the optimization criteria. Any technologies for conversion and storage are integrated in a coupling matrix, which links input and output. This paper deals with an extension to the optimization part by merging the network flows with the pricing of grid costs. The impact of network flow pricing is at first derived from theory, then translated into the energy hub concept and finally illustrated in an example. © 2010 IEEE.

关键词： Costs

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On Usage Control of Multimedia Content in and through Cloud Computing Paradigm

On Usage Control of Multimedia Content in and through Cloud ...

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International Conference on Future Information Technology (FutureTech)

作者： Tamleek Ali Mohammad Nauman Fazl-e Hadi Fahad bin Muhaya Institute of Management Sciences Pakistan Department of Computer Science University of Peshawar Pakistan Prince Muqrin Chair for IT Security (PMC) King Saud University Kingdom of Saudi Arabia

Multimedia content dissemination is a complex problem because of the multitude of policy types that providers may wish to associate with their content. There have been quite a few efforts at defining security policies and models which can cater to these types of requirements. Usage control models are the new breed of access control models that allow description of comprehensive policies for usage of protected content. In this paradigm, decisions regarding access to objects is not limited to request time only. It is coupled with the usage of the protected objects and becomes a continuous process carried out in parallel to the usage. The realization of usage control has been a long standing research problem to overcome the issue of loss of control in secure document dissemination. With the emergence of cloud computing, documents are stored in the cloud, the document viewers and editors themselves reside in the cloud and are accessed from thin clients such as browsers. We note that such scenarios provide an ideal opportunity for the realization of usage control for securing the usage of documents based on the stakeholders' policies. In this paper, we argue for a better realization of different features of the UCON model in the cloud based applications. We propose a robust architecture to provide fine-grained control over usage of protected objects through the use of emerging cloud computing paradigm. We present the design principles for this realization and discuss our prototype implementation of the proposed architecture.

关键词： Multimedia computing Cloud computing Access control Protection Authorization computer architecture Content management computer science computer security Robust control

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Plausibility in Early Stages of Architectural Design: A New Tool for High-Rise Residential Buildings

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Tsinghua science and Technology 2009年第3期14卷 327-332页

作者： Dirk Donath Danny Lobos Chair of Computer Science in Architecture Faculty of Architecture Bauhaus-UniversityWeimar 99423 Germany

This paper analyzes the problem of the design of envelopes for high-rise isolated residential buildings. The phenomenon of envelope creation appears in the early stages of the architectural design. Variables that influence the final shape and size of such envelopes are then identified. This paper presents the state-of-the-art tools for the current solutions at the commercial and academic/scientific level. The variables identified in this research are the client＇s needs, the urban code and architectural practice, and their specific components for the final creation of a new decision support system tool based on the building information modeling （BIM） software platform, to facilitate the work in the project development and drawing production stages. This tool generates several options for building envelopes according to the parameters required by the city Zoning Planning Commission. These options then lead to deliver reliable data and a geometry that can be analyzed in a timely fashion by the engineers, builders, architects, government, and clients in the early stages of the building＇s design. The results show that use of specific information and communication technologies （ICT） tools in the early stages of a building design helps reduce the working time, increases confidence in the generated solution, and contributes to the exploration of alternatives in a short period of time.

关键词： constraint based design parametric programming urban modeling optimization architectural design

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Training a GA-PLS Model for Chl-a Concentration Estimation over Inland Lake in Northeast China

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Procedia Environmental sciences 2010年 2卷 842-851页

作者： D.M. Lu K.S. Song L. Li D.W. Liu S.H. Li Y.D. Wang Z.M. Wang J.P. Xu J. Du M.M. Jia Computer Science and Engineering College Jilin Institute of Architecture and Civil Engineering Changchun China 130026 Northeast Institute of Geography and Agricultural Ecology CAS Changchun China130012 Department of Earth Sciences Indiana University-Purdue University Indianapolis USA 46202

Apparent Spectral properties (AOPs) of phytoplankton pigment concentration were analyzed in Shitoukoumen Reservoir, the Changchun city drinking water resource, in order to investigate the feasibility of the using remote sensing to monitor chlorophyll a (Chl-a) concentration in Northeast China. 225 samples were collected for laboratory Chl-a analysis during 12 field campaigns from 2006 to 2008. Correlation analysis between Chl-a and spectra and derivative spectral reflectance revealed that derivative at spectral band between 420 to 700 nm is more sensitive to Chl-a concentration, however correlation coefficient on reflectance is relatively low as Chl-a is not the dominating optical active component in the reservoir. A combination of Genetic Algorithms and Partial Least Square (GA-PLS) model was established for Chl-a estimation in this study. A preprocessing procedure was conducted to selected the comparatively high correlated spectral variable by application of correlation analysis between Chl-a with each spectral band, reflectance derivative ranging from 350 to 1000 nm and all possible band ratios (101, 250 combinations all together). 100 sensitive spectral variables were selected for GA-PLS modeling with above mentioned preprocessing procedure. A number of 2/3 samples were selected to train the GA-PLS model, and the rest was utilized to validate the performance of the model. It is found that the relationship between the most sensitive reflectance band, reflectance derivative and band ratio and Chl-a concentration agreed well with linear function with R-Square range from 0.45 to 0.78. However, the GA-PLS model for Chl-a estimation performs much better, with model validation R-Square of 0.81. As our results were derived from large number of ground truth samples, representing a spatio-temporal variation of pigment conditions, so the GA-PLS model has great potential for Chl-a estimation for inland water bodies with similar background.

关键词： BPN-PLS Chl-a Reflectance AOPs

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Constraint Rules-based Recovery for Business Transaction

Constraint Rules-based Recovery for Business Transaction

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The Ninth International Conference on Grid and Cloud Computing(第九届网格与云计算国际学术会议 GCC 2010)

作者： Liu Bo Cao Jiuxin Zhang Biao Mao Bo School of Computer Science and Engineering Southeast University Nanjing P.R. China School of Architecture and the Built Environment Royal Institute of Technology Stockholm SE-100 4

In web service computing, a business transaction is integrated by web services provided by multiple enterprises, therefore the transaction is deployed in a loose-coupled, heterogeneous and autonomous environment. When failures or exceptions occur, the traditional rolling back technique is inappropriate for recovery since locking is inapplicable. Current solutions, including forward recovery and backward recovery, didn't take into consideration enough business logic of the business transaction and thus were lack of flexibility and efficiency. In this paper, we introduce the conception-constraint rule, which express the business logic of a business transaction. A better control of recovery is achieved based on the constraint rules. A detailed description of our algorithms for recovery is given and a travel agency case study is illustrated. In addition, we compare our recovery mechanism with some existing solutions and the simulation results show that our method has both better success rate and efficiency.

关键词： Business transaction Web service constraint rule recovery mechanism

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H.264/AVC video authentication based video content

H.264/AVC video authentication based video content

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2010 5th International Symposium on I/V Communications and Mobile Networks, ISIVC 2010

作者： Ait Saadi, A. Bouridane, A. Gessoum, A. Division Architecture des Systèmes Centre de Développement des Technologies Avancées CDTA Algiers Algeria Institute of Electronics School of Electronics Electrical Engineering and Computer Science Queen's University Belfast Belfast BT7 7NN United Kingdom Institut d'Electronique Université Saad Dahlab Blida Algeria

ISBN: (纸本)9781424459988

This paper addresses the problem of ensuring the integrity and the authenticity of H.264/AVC video. It is achieved by authenticating each Group Of pictures (GOP) within the video separately. The proposed technique uses content based digital signature generated from robust features extracted from transform domain as fragile watermark and then embeds it in motion vectors belonging to the GOPs with the best partition mode in tree-structured motion compensation. Experimental results show that the proposed detects spatial cropping and temporal in a video. © 2010 IEEE.

关键词： Video signal processing

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Pricing of multi-energy network flow

Pricing of multi-energy network flow

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IEEE International Energy Conference and Exhibition (EnergyCon)

作者： Matthias Schulze Goran Gašparović Jieun Lee High Voltage Laboratory Swiss Federal Institute of Technology Zurich Switzerland Faculty of Electrical Engineering and Naval Architecture Mechanical Engineering University of Split Split Croatia Department of Computer Science Korea Advanced Institute of Science and Technology Daejeon South Korea

The network model bases upon the energy hub concept, which was developed by the Vision of Future Energy Networks” (VoFEN) research group at ETH Zurich in the last years. Keynote of the concept is a combined optimization of different energy carrier. Synergetic effects are expected to give unusual optimization results, when allowing any possible energy conversion inside a specific area that constitute the hub. Costs for the energy consumption or production are generally used as the optimization criteria. Any technologies for conversion and storage are integrated in a coupling matrix, which links input and output. This paper deals with an extension to the optimization part by merging the network flows with the pricing of grid costs. The impact of network flow pricing is at first derived from theory, then translated into the energy hub concept and finally illustrated in an example.

关键词： Electricity Optimization Resistance heating Mathematical model Smart grids Equations

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A park transform-based method for condition monitoring of three-phase electromechanical systems

A park transform-based method for condition monitoring of th...

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5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010)

作者： Christopher Laughman Steven B. Leeb Leslie K. Norford Steven R. Shaw Peter R. Armstrong Mitsubishi Electric Research Laboratories Inc. Cambridge MA USA Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA USA Department of Architecture Massachusetts Institute of Technology Cambridge MA USA Department of Electrical and Computer Engineering Montana State University Bozemon MT USA Masdar Institute of Science and Technology Abu Dhabi United Arab Emirates

This paper presents a Park transform-based method for preprocessing stator current data from a motor and transforming it into a form that is useful for fault detection and diagnostics. The proposed method generates power signatures that are invariant to the initial electrical angle of the voltage when the motor is connected to the utility, and can also adapt to variations in the electrical angle of the supply voltage over time. A modified nonlinear least squares algorithm identifies and tracks the parameters of the supply voltage over time, ensuring that the supply voltage and the argument of the Park transformation remain synchronized. Experimental results are presented that illustrate the method's effectiveness for identifying changes in the mechanical load on a 3/4 HP refrigeration compressor.

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Research and Design of Integrated Substation Monitoring Systems

Research and Design of Integrated Substation Monitoring Syst...

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Sixth International Conference on Semantics,Knowledge and Grids(第六届语义、知识与网格国际会议 SKG 2010)

作者： Yang Ai-min WU Jun-pin i Xiao Qu-li Wang Li-xia Computer Science and Information Technology College Zhejiang Wanli University NingboZhejiang CHINA Hebei Institute of Architecture and Civil Engineering No.33 Jianguo Road Zhang Jiakou City Hebei P

This paper introduces a set of integrated substation monitoring system established by virtue of CAN technology and DMP6000 DC system, which realizes all-round control and management of substation DC system. It gathers and controls protective signals of each protective unit in substations, sets protective fixed value and protects signals of protective unit subject to the values and generates corresponding report forms, meanwhile, the system also supports the construction of configuration charts and maintenance of databank.

关键词： CAN DMP6000 Substations Monitoring system

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Gaussian process based state estimation for a gyroscope-free IMU

Gaussian process based state estimation for a gyroscope-free...

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IEEE SENSORS

作者： Patrick Schopp Axel Rottmann Lasse Klingbeil Wolfram Burgard Yiannos Manoli Fritz Huettinger Chair of Microelectronics Department of Microsystems Engineering-IMTEK University of Freiburg Germany Department of Microsystems Engineering - IMTEK Fritz Huettinger Chair of Microelectronics Department of Computer Science - IIF University of Freiburg Germany HSG-IMIT - Institute of Micromachining and Information Technology Villingen-Schwenningen Germany

A gyroscope-free inertial measurement unit (GF IMU) utilizes only accelerometers to determine the relative movement of a body. We consider the problem of merging the individual accelerometer measurements using an Unscented Kalman filter (UKF) to estimate the body motion. Conventionally, this is realized by a parametric observation model, which gives the expected sensor measurements. In this paper, we replace this model by a Gaussian process (GP). GPs are a state-of-the art non-parametric Bayesian regression framework. Thereby, the measurements are determined based on a sampled set of training data. No physical principles of the system must be described. In addition, we apply sparse GPs using pseudo-inputs to reduce computation time, while the estimation accuracy remains nearly constant. As a result, the filter cycle time decreases by a factor of 1.92. We present accuracy measurements obtained on a 3D rotation table and compare the results to estimates generated with a parametric model.

关键词： Training Mathematical model Accelerometers Acceleration Angular velocity Three dimensional displays Parametric statistics

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