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A Service-Oriented Alarms System for Intelligent Building Management

A Service-Oriented Alarms System for Intelligent Building Ma...

引用

International Conference on control Systems and computer science (CSCS)

作者： Alexandra Cernian Radu Iancu Serban Petrescu Faculty of Automatic Control and Computer Science Politehnica University of Bucharest Bucharest Romania

ISBN: (纸本)9781467361408

In the constantly evolving smart building context, an important aspect to address is devices and applications interoperability. The FCINT project provides a service-oriented management framework for smart building facilities through the use of ontologies, intelligent controllers and a Web-based portal. The alarms system presented in this paper is part of the effort to provide a proper framework for enhancing devices and services interoperability in smart buildings environment. Users will benefit of increased comfort, since actions can be taken as soon as an alarm occurs. Alarm conditions and policies can be easily customized and adapted to different scenarios, such as providing support to elderly people or monitoring patients with various medical conditions in their smart home environments. The alarms service provides real time feedback, thus allowing immediate action to be taken.

关键词： Alarm systems Smart buildings Portals Monitoring Web services Context Medical services

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Analysis of low-frequency acoustic signals emitted by low-power vertical axis wind turbine VAWT

Analysis of low-frequency acoustic signals emitted by low-po...

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International Conference on Environment and Electrical Engineering

作者： Radoslaw Pierzga Tomasz Boczar Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology

ISBN: (纸本)9781467330602

Operating wind turbines produce infrasound noise thus they act on the environment. This also applies to small wind turbines, which are located in the immediate vicinity of human settlements. Small wind turbines can be located close to buildings and mounted directly on their walls and roofs. In this case, it is important to determine the level of environmental impact of such type of installation. Measurement results of infrasound noise generated by a small vertical axis wind turbine (VAWT), rated power 1 kW, are presented in the paper. Analysis results of sound pressure level and dependence of signal spectra from different wind speeds are shown. In the analysis of sound pressure level the G weighing curve was used according to the ISO 7196:2002 standard and achieved results were referred to the limits contained in the current legislation, what allowed for evaluation of the infrasound noise impact of the turbine under study.

关键词： Infrasound emission Small wind turbine VAWT

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Errors estimation and refining methods for the numerical computation in real-time control systems

Errors estimation and refining methods for the numerical com...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Valentin Tanasa Andrei Chiriac Dumitru Popescu Faculty of Automatic Control and Computer Science Politehnica University of Bucharest Bucharest Romania

In the field of industrial control, the numerical devices are widely used. There are more issues that can affect the precision of the numerical control and it can induce significant errors in the control structure. These issues, discussed in this article, are: the discretization methods used to elaborate the discrete control algorithms, the value of the sampling rate, the numerical error representation in the computing devices and the quantization error. In this paper we try to make an analysis of these errors and to propose methods that can provide error reduction.

关键词： Quantization (signal) Digital control Equations Process control Performance evaluation Stability analysis Transfer functions

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A digital business ecosystem integrated approach for farm management information system

A digital business ecosystem integrated approach for farm ma...

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International Conference on Systems and computer science (ICSCS)

作者： G. Burlacu L. E. Cojocaru C. Danila D. Popescu A. M. Stanescu Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Bucharest Romania

The concept of Digital Business Ecosystem becomes an important aspect of everyday economy and technologies in this area are becoming a reality considering that results from European Join Collaborative Research Projects (FP6 - FP7) are been integrated within Digital Business Ecosystem. In this context, a Farm Management Information System, designed as a part of this Digital Business Ecosystem, could be the key to solving many current problems and should be designed to sustain agricultural Digital Business Ecosystem development.

关键词： Business Ecosystems Sensors Interoperability Semantics Agriculture Ontologies

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Analysis of infrasound noise emitted by high power wind turbine with asynchronous generator for selected resonant and median frequencies

Analysis of infrasound noise emitted by high power wind turb...

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International Conference on Environment and Electrical Engineering

作者： Tomasz Malec Tomasz Boczar Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology

ISBN: (纸本)9781467330602

The paper presents analysis results of sound pressure level of infrasound noise generated by brand new wind turbine from REPOWER type MM92, rated power 2 MW. As results the amplitude spectra of noise for three chosen wind speed values are presented. Additionally, distributions of the sound pressure level with dependence on wind speed for selected resonant and median frequency values are presented. For chosen frequencies linear regression analysis was performed and subjected for a detailed evaluation. Values obtained from measurement were referred to and compared with the limits specified in legislations existing in this area.

关键词： Component Wind turbine Infrasound noise Synchronous generator

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Analysis of infrasound noise emitted by high-power wind turbine with synchronous generator

Analysis of infrasound noise emitted by high-power wind turb...

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International Conference on Environment and Electrical Engineering

作者： Tomasz Malec Tomasz Boczar Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology

ISBN: (纸本)9781467330602

Analysis results of sound pressure level of infrasound noise generated by high-power wind turbine Vensys type 62, which is operated for five years with an electrical capacity of 1.2 MW, are presented in the paper. Frequency and time-frequency spectrograms calculated for recorded low-frequency signals with respect to all registered changes of electrical power generated and the number of rotor revolutions per minute are presented. All measured sound pressure levels have been evaluated with and without the use of G weighting curve, which have helped to determine the size of infrasound impact of turbines and to analyze the influence of regarded parameters on this impact range of changes. Values obtained from measurement were referred to and compared with the limits specified in legislations existing in this area.

关键词： Component: wind turbine Infrasound noise Synchronous generator

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Improving the visualization of electron-microscopy data through optical flow interpolation

Improving the visualization of electron-microscopy data thro...

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27th Spring Conference on computer Graphics, SCCG 2011

作者： Carata, Lucian Shao, Dan Hadwiger, Markus Groeller, Eduard Faculty of Automatic Control and Computer Engineering Gh. Asachi Technical University of Iasi Romania Institute of Computer Graphics and Algorithms Vienna University of Technology Austria Division of Mathematical and Computer Sciences and Engineering King Abdullah University of Science and Technology Saudi Arabia

ISBN: (纸本)9781450319782

Technical developments in neurobiology have reached a point where the acquisition of high resolution images representing individual neurons and synapses becomes possible. For this, the brain tissue samples are sliced using a diamond knife and imaged with electron-microscopy (EM). However, the technique achieves a low resolution in the cutting direction, due to limitations of the mechanical process, making a direct visualization of a dataset difficult. We aim to increase the depth resolution of the volume by adding new image slices interpolated from the existing ones, without requiring modifications to the EM image-capturing method. As classical interpolation methods do not provide satisfactory results on this type of data, the current paper proposes a re-framing of the problem in terms of motion volumes, considering the depth axis as a temporal axis. An optical flow method is adapted to estimate the motion vectors of pixels in the EM images, and this information is used to compute and insert multiple new images at certain depths in the volume. We evaluate the visualization results in comparison with interpolation methods currently used on EM data, transforming the highly anisotropic original dataset into a dataset with a larger depth resolution. The interpolation based on optical flow better reveals neurite structures with realistic undistorted shapes, and helps to easier map neuronal connections. © 2011 ACM.

关键词： Interpolation

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Discrete-time MPC with constraints for variable speed wind turbines

Discrete-time MPC with constraints for variable speed wind t...

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2013 2nd International Conference on Systems and computer science, ICSCS 2013

作者： Mateescu, R. Stefanoiu, D. Christov, N. Computer Science and Automatic Control Faculty Politehnica University of Bucharest Romania Laboratoire d'Automatique Génie Informatique et Signal Université Lille 1 Sciences et Technologies Lille France

ISBN: (纸本)9781479920204

This paper proposes a discrete-time predictive controller with constraints for variable speed horizontal wind turbines. The control strategy, implemented using discrete-time model predictive control (MPC) is optimized using a certain set of constrains applied to the control signal u(k). MPC provides an integrated solution for controlling systems with interacting variables, complex dynamics and constraints. The paper will show that with a small modification in the control signal, the degree of performance deterioration can be reduced if the constraints are incorporated in the implementation, leading to the idea of constrained control. © 2013 IEEE.

关键词： Model predictive control

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Intelligent negotiation mechanism for supporting the interoperability within the sensing enterprise

Intelligent negotiation mechanism for supporting the interop...

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7th IFAC Conference on Manufacturing Modelling, Management, and control, MIM 2013

作者： Stanescu, Aurelian Mihai Cretan, Adina Coutinho, Carlos Jardim-Goncalves, Ricardo Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Romania Computer Science Department Nicolae Titulescu University of Bucharest Romania CTS Departamento de Engenharia Electrotecnica Faculdade de Ciencias e Tecnologia Universidade Nova de Lisboa UNINOVA Portugal

ISBN: (纸本)9783902823359

The Sensing Enterprise is a novel concept that refers to an enterprise anticipating future decisions by using multi-dimensional information captured through physical and virtual objects. The Sensing Enterprise concept is shifting focus towards a borderless enterprise, having at its core the collaboration and continuous interactions among smart objects and systems. But in the actual competitive and global business context, the maintenance of the collaboration environment through the interoperation among heterogeneous smart virtual and physical objects in a collaborative organizational environment becomes difficult to achieve. Therefore, in a dynamic context a change in any component of the networked partners affects the others, creating difficulties to sustain operating networked environment. In this respect, this paper proposes an intelligent negotiation framework as a key mechanism to achieve and maintain the interoperability between the organisations' smart objects and applications, and its validation in an industrial scenario. To allow a sustainable, flexible and generic approach towards the infrastructure implementation in global scale, a cloud-based platform is proposed for setting of the Sensing Enterprise framework. © IFAC.

关键词： Interoperability

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RENOVATION OF ARCHIVE AUDIO RECORDINGS USING SPARSE AUTOREGRESSIVE MODELING AND BIDIRECTIONAL PROCESSING

RENOVATION OF ARCHIVE AUDIO RECORDINGS USING SPARSE AUTOREGR...

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IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Maciej Niedzwiecki Marcin Ciolek Faculty of Electronics Telecommunications and Computer Science Department of Automatic Control Gdansk University of Technology

ISBN: (纸本)9781479903573

The paper presents a new approach to elimination of broadband noise and impulsive disturbances from archive audio recordings. The proposed adaptive Kalman-like algorithm, based on a sparse autoregressive model of the audio signal, simultaneously detects noise pulses, interpolates the irrevocably distorted samples and performs signal smoothing. It is shown that bidirectional (forward-backward) processing of the archive signal improves smoothing efficiency and allows one to localize noise pulses more accurately, leading to noticeable performance improvements compared to unidirectional processing.

关键词： Restoration of audio signals Adaptive signal processing Sparse autoregressive models Bidirectional processing adaptive signal processing archives Bidirectional BUILDING RENOVATION Audio recordings Broad band noise Noise noise pulse Modeling autoregressive processes Audio recording audio signals

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