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A cloud-based approach for smart facilities management

A cloud-based approach for smart facilities management

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2013 IEEE International Conference on Prognostics and Health Management, PHM 2013

作者： Laut, D. Liu, J. Majumdar, S. Nandy, B. St-Hilaire, M. Yang, C.S. Dept. of Civil Engineering Carleton University Ottawa ON KIS 5B6 Canada Dept. of Mechanical and Aerospace Engineering Carleton University Ottawa ON KIS 5B6 Canada Dept. of Systems and Computer Engineering Carleton University Ottawa ON KIS 5B6 Canada Solana Networks Ottawa ON Canada School of information Technology Carleton University Ottawa ON KJS 5B6 Canada Information and Communication Technologies National Research Council Canada Ottawa ON KIA OR6 Canada

ISBN: (纸本)9781467357227

One of the problems with the current practices in the various domains of facility management is that each facility is managed by its stake holder in isolation from the management of other similar facilities. However, with the advent of new technologies such as cloud computing, we have an opportunity to unify the management of multiple geographically dispersed facilities. To that end, this paper presents our joint research efforts on cloud-based smart facility management. More precisely, we present a cloud-based platform in order to manage sensor-based bridge infrastructures and smart machinery. Although the paper focuses on these two applications, the proposed cloud-based platform is designed to support/manage a multitude of smart facilities. © 2013 IEEE.

关键词： Condition monitoring

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How Shadowing Hurts Vehicular communications and How Dynamic Beaconing Can Help

How Shadowing Hurts Vehicular Communications and How Dynamic...

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IEEE INFOCOM Conference

作者： Christoph Sommer Stefan Joerer Michele Segata Ozan Tonguz Renato Lo Cigno Falko Dressler Computer and Communication Systems Institute of Computer Science University of Innsbruck Austria Electrical and Computer Engineering Dept. Carnegie Mellon University Pittsburgh PA Systems and Networks Dept. of Information Engineering and Computer Science University of Trento Italy

ISBN: (纸本)9781467359443

We study the effect of radio signal shadowing dynamics, caused by vehicles and by buildings, on the performance of beaconing protocols in Inter-Vehicular communication (IVC). Recent research indicates that beaconing, i.e., one hop message broadcast, shows excellent characteristics and can outperform other communication approaches for both safety and efficiency applications, which require low latency and wide area information dissemination, respectively. We show how shadowing dynamics of moving obstacles hurt IVC, reducing the performance of beaconing protocols. At the same time, shadowing also limits the risk of overloading the wireless channel. To the best of our knowledge, this is the first study identifying the problems and resulting possibilities of such dynamic radio shadowing. We demonstrate how these challenges and opportunities can be taken into account and outline a novel approach to dynamic beaconing. It provides low-latency communication (i.e., very short beaconing intervals), while ensuring not to overload the wireless channel. The presented simulation results substantiate our theoretical considerations.

关键词： beaconing Simulation results Shadowing (Histology) Moving obstacles communication Research

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To crash or not to crash: Estimating its likelihood and potentials of beacon-based IVC systems

To crash or not to crash: Estimating its likelihood and pote...

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2012 IEEE Vehicular Networking Conference, VNC 2012

作者： Joerer, Stefan Segata, Michele Bloessl, Bastian Cigno, Renato Lo Sommer, Christoph Dressler, Falko Computer and Communication Systems Institute of Computer Science University of Innsbruck Austria Systems and Networks Dept. of Information Engineering and Computer Science University of Trento Italy

ISBN: (纸本)9781467349963

Is it possible to estimate some 'safety' metric to assess the effectiveness of Intelligent Transportation systems? In particular, we are interested in using Inter-Vehicle communication (IVC) beaconing for increasing drivers' safety at intersections. In the last couple of years, the vehicular networking community reported in several studies that simple network metrics are not sufficient to evaluate safety enhancing protocols and applications. We present a classification scheme that allows the quantification of such improvements by determining how many potential crashes happen or can be avoided by a specific IVC approach. Using a modified road traffic simulator that allowed selected vehicles to disregard traffic rules, we investigated the impact of safety messaging between cars approaching an intersection. We show that in suburban environments simple beaconing is not as effective as anticipated. Yet, simple one-hop-relaying, e.g., by vehicles parked close to an intersection, can improve drivers' safety substantially. Since the key purpose of IVC is safety, the paper closes the loop in the evaluation of the effectiveness of vehicular networks as defined today. © 2012 IEEE.

关键词： Vehicles

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User-centric, privacy-preserving adaptation for voIP CAPTCHA challenges 6

User-centric, privacy-preserving adaptation for voIP CAPTCHA...

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6th International Symposium on Human Aspects of Information Security and Assurance, HAISA 2012

作者： Tasidou, A. Efraimidis, P.S. Soupionis, Y. Mitrou, L. Katos, V. Democritus University of Thrace Dept. of Electrical and Computer Engineering Greece Greece University of the Aegean Dept. of Information and Communication Systems Engineering Greece

ISBN: (纸本)9781841023175

The effectiveness of CAPTCHA challenges largely depends on being simultaneously easier to solve for humans and harder to solve for bots. In this work we argue that it is possible to enhance the effectiveness of audio CAPTCHA challenges by adapting the challenge to the users' characteristics. We propose a method for achieving this adaptation while protecting users' privacy. Moreover, our approach allows us to address discrimination issues that naturally arise in contemporary audio CAPTCHA challenges. Utilizing modern cryptographic techniques we design a privacy-preserving system, called PrivCAPTCHA, which offers customized CAPTCHA challenges. Copyright © 2012 HAISA.

关键词： Electronic mail filters

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An overview of attacks against digital watermarking and their respective countermeasures

An overview of attacks against digital watermarking and thei...

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2012 International Conference on Cyber Security, Cyber Warfare and Digital Forensic, CyberSec 2012

作者： Tanha, Maryam Torshizi, Seyed Dawood Sajjadi Abdullah, Mohd Taufik Hashim, Fazirulhisyam Computer and Communication Systems Engineering Dept. Universiti Putra Malaysia Serdang Malaysia Computer Science Dept. Faculty of Computer Science Universiti Putra Malaysia Serdang Malaysia

ISBN: (纸本)9781467314251

The increased and widespread usage of digital multimedia has aroused great concerns regarding issues such as copyright protection, copy control and proof of ownership. Digital watermarking serves as a solution to these kinds of problems;however, digital watermarking techniques have demonstrated to possess vulnerabilities. Thus opening avenues for malicious attackers to abuse these security breaches. Therefore, maintaining the security of digital watermarked media i.e. text, image, audio and video has received considerable attention. This paper has conducted a comprehensive research with special emphasis on the classification of malicious attacks against digital watermarking. Subsequently, it reviews the current countermeasures available to mitigate the intentional attacks. In addition, it procures a foundation for the evaluation of various watermarking algorithms. © 2012 IEEE.

关键词： Copyrights

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Random walkers based segmentation method for breast thermography

Random walkers based segmentation method for breast thermogr...

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2012 2nd IEEE-EMBS Conference on Biomedical engineering and Sciences, IECBES 2012

作者： Moghbel, Mehrdad Mahmud, Hajjah Rozi Mashohor, Syamsiah Saripan, M. Iqbal Bin Sensor Technology Laboratory Institute of Advanced Technology UPM Serdang Malaysia Dept. of Computer and Communication Systems Faculty of Engineering UPM Serdang Malaysia

ISBN: (纸本)9781467316668

In breast thermography diagnostic, proper detection and segmentation of the areola area as well as detection of breast boundaries present the biggest challenge. As the boundaries of breasts especially in the upper quadrants are usually not present, this produces a great deal of challenge to segment breasts automatically. Many approaches have been developed to segment the breast in the past such as Snakes, Active Contours and Circular Hough Transforms, but these methods fail to detect the boundaries of the breast with the required level of accuracy especially the upper boundaries of the breast. By utilizing most recent segmentation method which is Random Walkers, the breast can be segmented accurately which in turn will increase the accuracy and the reliability of computer aided detection/diagnosis systems. © 2012 IEEE.

关键词： Image segmentation

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Bringing IoT and cloud computing towards pervasive healthcare

Bringing IoT and cloud computing towards pervasive healthcar...

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6th International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing, IMIS 2012

作者： Doukas, Charalampos Maglogiannis, Ilias Dept. of Information and Communication Systems Engineering University of the Aegean Samos Greece Dept. of Computer Science and Biomedical Informatics University of Central Greece Lamia Greece

ISBN: (纸本)9780769546841

Pervasive healthcare applications utilizing body sensor networks generate a vast amount of data that need to be managed and stored for processing and future usage. Cloud computing among with the Internet of Things (IoT) concept is a new trend for efficient managing and processing of sensor data online. This paper presents a platform based on Cloud Computing for management of mobile and wearable healthcare sensors, demonstrating this way the IoT paradigm applied on pervasive healthcare. © 2012 IEEE.

关键词： Cloud computing

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A broadcast streaming method over ad hoc networks enabling high packet reachability and long battery lifetime

A broadcast streaming method over ad hoc networks enabling h...

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2012 9th Asia-Pacific Symposium on Information and Telecommunication Technologies, APSITT 2012

作者： Utsu, Keisuke Sano, Hiroshi Nishikawa, Hiroaki Ishii, Hiroshi Dept. of Communication and Network Engineering Sch. of Information and Telecommunication Engineering Tokai University Tokyo Japan Dept. of Computer Science Graduate School of Systems and Information Engineering University of Tsukuba Ibaraki Japan

ISBN: (纸本)9784885522659

This paper considers cases where a specific number of nodes in an ad hoc network broadcast video and audio streams over the entire network. For the purpose, we have proposed Load and Battery Charge oriented Flooding (LBF), which reduces degradation in delivery quality, and energy consumption, and prevents nodes from being interrupted due to the complete discharge of their batteries. This paper describes an evaluation of the proposed method through network simulation. The simulation results indicate that the proposed method can prolong network running time without degradation of delivery quality. © 2012 IEICE Institute of Electronics Informati.

关键词： Energy utilization

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Modeling atherosclerotic plaque growth: A case report based on a 3D geometry of left coronary arterial tree from computed tomography

Modeling atherosclerotic plaque growth: A case report based ...

引用

IEEE Symposium on Bioinformatics and Bioengineering (BIBE)

作者： Antonis I. Sakellarios Panagiotis K. Siogkas Lambros S. Athanasiou Themis P. Exarchos Michail I. Papafaklis Christos V. Bourantas Katerina K. Naka Dimitra Iliopoulou Lampros K. Michalis Nenad Filipovic Oberdan Parodi Dimitrios I. Fotiadis Dept. of Materials Science and Engineering University of Ioannina GR Dept. of Biomedical Research FORTH Institute of Molecular Biology and Biotechnology Ioannina Greece Cardiovascular Division Harvard Medical School Boston USA Dept. of Interventional Cardiology Erasmus MC Thoraxcenter Rotterdam The Netherlands Dept. of Cardiology in Medical School University of Ioannina Ioannina GR Greece institute of communication and computer systems University of Kragujevac Serbia National Research Council Institute of Clinical Physiology Pisa Italy

In this study, we present an innovative model for plaque growth utilizing a 3-Dimensional (3D) left coronary arterial tree reconstructed from computed tomographic (CT) data. The proposed model takes into consideration not only the effect of the local hemodynamic factors but also major biological processes such as the low density lipoprotein (LDL) and high density lipoprotein (HDL) transport, the macrophages recruitment and the foam cells formation. The endothelial membrane is considered semi-permeable and endothelial shear stress dependent, while its permeability is modeled using the Kedem-Katscalsky equations. Patient specific biological data are used for the accurate modeling of plaque formation process. The finite element method (FEM) is employed for the solution of the system of partial differential equations. The results of the simulation are compared to the plaque progression in a follow-up CT examination performed three years after the initial investigation. The results show that the proposed model can be used to predict regions prone for plaque development of progression.

关键词： Mathematical model Arteries Computational modeling Hardware design languages Atherosclerosis Computed tomography Equations

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DynFire: Dynamic firewalling in heterogeneous environments

DynFire: Dynamic firewalling in heterogeneous environments

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World Congress on Internet Security, WorldCIS-2012

作者： Vensmer, Alexander Kiesel, Sebastian University of Stuttgart Institute of Communication Networks and Computer Engineering Pfaffenwaldring 47 70569 Stuttgart Germany University of Stuttgart Computing Center Networks and Communications Systems Dept. Allmandring 30A 70569 Stuttgart Germany

ISBN: (纸本)9781908320049

This paper presents "DynFire," a novel approach for the role-based, dynamic control of network firewalls. DynFire allows an individually controlled, secure access to the ITresources of a large organization, with particular focus on mobile users and users with restricted rights, such as subcontractors. The basic assumption behind DynFire is that, within a secured network domain separated from the Internet, we can establish a temporary binding between an IP address and a single user ID. Whenever a user connects to or disconnects from this secure network domain, firewalls are configured accordingly, using a centralized "Firewall Manager" and standardized signaling protocols. © 2012 Infonomics Society.

关键词： Network security

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