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IEEE WIC ACM International Conference on Web Intelligence (WI)

作者： Michel Oey Zülküf Genç Amineh Ghorbani Huib Aldewereld Frances Brazier Reyhan Aydogan Catholijn M. Jonker Reinier Timmer Niek Wijngaards Faculty of Technology Policy and Management Delft University of Technology The Netherlands Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology The Netherlands Thales Research & Technology Delft Thales Nederland BV The Netherlands

ISBN: (纸本)9781479941421

A contemporary governance challenge for governments concerns the biogas domain: what incentives and policies can lead to a viable biogas economy? To support addressing this challenge, a prototype of a simulator is constructed in which horizontal governance is applied in a multi-stakeholder context. This paper reports on the modelling and knowledge acquisition that led to the development of that prototype. Rather than (re)inventing tooling, three available agent-based modelling approaches are combined: the MAIA meta-model, OperA and GENIUS, with Agents cape as the agent-based middleware for the realisation of the simulator. The resulting simulator has been validated by biogas experts from Alliander (NL-based energy network company), leading to confirmation that our combined approach was useful for the analysis of this multi-stakeholder domain.

关键词： Biological system modeling Organizations Middleware Prototypes Contracts Computational modeling Protocols

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Pulse shaping for millimeter-wave and terahertz applications in coplanar technology

Pulse shaping for millimeter-wave and terahertz applications...

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European Conference on Microwave

作者： M. Chudzik I. Arnedo I. Arregui F. Teberio A. Lujambio T. Lopetegi M. A. G. Laso Q. Yu N. S. Barker A. Ghaddar A. Chahadih G. Ducournau J. F. Lampin T. Akalin Electrical and Electronic Engineering Department Public University of Navarre Pamplona Spain R&D Department das-Nano S.L Mutilva Baja Navarre Spain Electrical and Computer Engineering Department University of Virginia Charlottesville United States Institut d'Electronique de Microelectronique et de Nanotechnologie Villeneuve d'Ascq France

In this work, a pulse shaper in coplanar technology intended for the unlicensed band up to the THz region is designed, fabricated, and measured. This broadband frequency range is of great interests as it offers very high data rate communication in local area networks. The technique employs tailored coplanar lines that have been designed using an exact analytical series solution of the synthesis problem derived from the coupled-mode theory. The frequency response of the pulse-shaping device introduced in the synthesis method depends on the spectrum of the applied THz impulse generator, application-dependent devices (e.g. antenna) with known responses, and desired THz output response. Here, the desired output pulse is a combination of Hermite polynomials with 5 ps of temporal duration. The designed device has been simulated in the frequency domain and the obtained result of the S11 parameter has been used in the time domain calculation of the output pulse giving good accordance with the desired THz pulse. The prototype has been fabricated with gold metallization on HR-Si substrate by e-beam lithography and lift-off process. A downscaled version with spectral content up to 0.3 THz is also fabricated and measured validating each component of the system.

关键词： Broadband antennas Microwave communication Electromagnetic waveguides Broadband communication Frequency response

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Dental fluorosis classification using multi-prototypes from fuzzy C-means clustering

Dental fluorosis classification using multi-prototypes from ...

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IEEE Symposium on Computational Intelligence and Bioinformatics and Computational Biology (CIBCB)

作者： Uklid Yeesarapat Sansanee Auephanwiriyakul Nipon Theera-Umpon Chatpat Kongpun Chiang Mai University Chiang Mai TH Department of Computer Engineering Chiang Mai University Chiang Mai Thailand Department of Electrical Engineering Chiang Mai University Chiang Mai Thailand Intercountry Centre for Oral Health Department of Health Ministry of Public Health Chiang Mai Thailand

Dental fluorosis occurs in many parts of the world because of highly exposure to high concentration of fluoride in the teeth development stage. To help the health policy makers developing the prevention and treatment plans, a manual or automatic image-based dental fluorosis classification system is needed. In this paper, we develop an automatic dental fluorosis classification system using multi-prototypes derived from the fuzzy C-means clustering algorithm. The values from red, green, blue, hue, saturation, and intensity channels are utilized as features in the algorithm. We also set the dental fluorosis classification criteria from the amount of pixels belonging to each class. We found that the pixel correct classification rate is around 92% on the training data set and around 90% on the blind test data set when comparing the results with two experts. Three out of seven images in the training data set and eight out of fifteen images in the blind test data set are correctly classified into dental fluorosis classes.

关键词： Dentistry Classification algorithms Teeth Training data Image color analysis Image segmentation Clustering algorithms

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A FLOOD MAPPING ALGORITHM FROM CLOUD CONTAMINATED MODIS TIME-SERIES DATA USING A MARKOV RANDOM FIELD MODEL

A FLOOD MAPPING ALGORITHM FROM CLOUD CONTAMINATED MODIS TIME...

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IEEE International Geoscience and Remote Sensing Symposium

作者： T. Kasetkasem P. Phuhinkong P. Rakwatin T. Chanwimaluang I. Kumazawa Department of Electrical Engineering Kasetsart University Bangkok Thailand Geo-Informatics and Space Technology Development Agency (Public Organization) Bangkok Thailand National Electronics and Computer Technology Center Pathumthani Thailand Tokyo Institute of Technology Yokohama Japan

This paper addresses the problem of flood detection from the cloud-contaminated MODIS time-series data. Although MODIS data can provide almost daily coverage over the large area with the medium resolution. The use of MODIS data for flood mapping in the tropical regions is a challenging task due to the cloud contamination. Since the floods usually occur in the connected regions over a certain period of time, we employed the Markov random field model to characterize this property. For our experiments, the classification accuracy of flooded and non-flooded areas can be significantly increased by incorporating the MRF model.

关键词： MODIS Clouds Accuracy Floods Data models Markov processes Remote sensing

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A privacy protection model for location-based social networking services

A privacy protection model for location-based social network...

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2014 International Conference on engineering Technology And Applications(ICETA2014)

作者： Rong Tan Wen Si Jian Wang College of Information and Computer Science Shanghai Business School Cyber Physical System R&D Center The Third Research Institute of Ministry of Public Security School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University

Since the location-based social networking services emerged,the location privacy issue has gained widespread concerns from consumers and *** the location history plays an important role in knowledge discovery,many people worry that their privacy will be disclosed *** this paper,we introduce a spatial-temporal cloaking model which follows the k-anonymity principle to protect the location *** corresponding algorithm which can find a minimum cloaking 3D box covering the actual location and its temporal information is proposed as ***,the algorithm is able to prevent the modeled records against the continuous attacks which infer the actual location by computing the overlapping spatial *** experimental results show that the proposed algorithm has a high efficiency.

关键词： privacy model location privacy protection privacy protection mobile computing location-based social networking services location-based services

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Applying data mining to improve faculty evaluation for educational organizations

Applying data mining to improve faculty evaluation for educa...

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2014 International Conference on engineering Technology And Applications(ICETA2014)

作者： Wen Si Rong Tan Jian Wang Hongmei Liu Jianye Li College of Information and Computer Science Shanghai Business School Cyber Physical System R&D Center The Third Research Institute of Ministry of Public Security School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Donghua University The Third Research Institute of Ministry of Public Security

One of the challenges of educational organization improvement is to manage talented teachers effectively,*** assign the right teacher for given *** providing scientific performance evaluation,some factors related to a teacher,such as age,experience,professional,*** play important ***,it is crucial to find the underlying associations between teachers' personal information and their working *** this paper,data mining technique is employed to improve the faculty *** algorithm called Quick Apriori,which is based on the classic Apriori algorithm,is *** results not only provide the decision rules related to personal characteristics with working performance,but also show that the obtained rules are consonant with existing experience.

关键词： data mining knowledge management Quick Apriori algorithm human resource management talented management

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Complex Path Based Trust Calculation Method in Social Network

Complex Path Based Trust Calculation Method in Social Networ...

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2014年国际计算机科学与软件工程学术会议

作者： Yang ZHOU Qiao XIONG Bo ZHANG Shangdong Computer Science Center(National Supercomputer Center in Jinan) Shandong Provincial Key La The Third Research Institute of Ministry of Public Security Shanghai 200234China College of Information Mechanical and Electrical EngineeringShanghai Normal UniversityShanghai200

Social network has already been an important way to facilitate information *** key challenge in social network is how to evaluate the reliability of users' complex *** this paper,we propose a complex trusted path-based algorithm for computing *** main works are (1) we consider the users in social networks as vertices in a graph;(2) complex path composition in SNS is proposed according to its topology,and (3) an approach of computing complex path trust is proposed based on its topology.

关键词： Social network Complex path Trust

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Experimental study on pedestrians' collision avoidance

Experimental study on pedestrians' collision avoidance

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World Congress on Intelligent Control and Automation (WCICA)

作者： Yuan Gao Tao Chen Peter B. Luh Hui Zhang Center for Intelligent and Networked Systems Tsinghua University Beijing People's Republic of China Institute of Public Safety Research Tsinghua University Beijing People's Republic of China Department of Electrical and Computer Engineering University of Connecticut Storrs United States of America

Modeling and simulating of pedestrians movement have attracted much attention because they provide reproducible results, which are important to evaluate evacuation facilities and risks. It is well accepted the movement of individuals is affected by interactions with others and the environment. However, factors affecting the interactions are not fully studied and experiments are needed. This paper studies the impact of speeds on how pedestrians respond to obstacles, i.e., avoid collisions. Experiments were conducted in which participants were instructed to perform collision avoidance tasks with obstacles at two levels of both normal and high speeds. The avoidance tasks include avoiding collisions by stopping at or bypassing obstacles. Trajectories of participants were extracted from video recordings. How speed affects (1) the timing and magnitude of the deceleration of participants stopping at obstacles; (2) and the minimum distance to obstacles for participants bypassing obstacles were studied. It is concluded that speed significantly affects participants' collision avoidance: compared with participants at the normal speed, participants at the high speed start to stop further away from obstacles with higher deceleration when stopping at obstacles; and they need more space when bypassing obstacles. Results of the experiments are now being used to refine pedestrian models.

关键词： Collision avoidance Trajectory Vehicles Mathematical model Visualization Fitting Educational institutions

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DEVELOPMENT OF AN INEXPENSIVE HEALTH MONITORING SYSTEM FOR THE LONE ELDERLY

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CONTROL AND INTELLIGENT SYSTEMS 2013年第3期41卷 143-151页

作者： Yuan, Jian Tan, Kok K. Koh, Gerald C. H. Narayanan, Arun S. Lee, Tong H. NUS Graduate School for Integrative Sciences and Engineering National University of Singapore Singapore Singapore Department of Electrical and Computer Engineering National University of Singapore Singapore Singapore Saw Swee Hock School of Public Health National University of Singapore Singapore Singapore

This paper proposes the design and implementation of a low-cost, low-power and scalable intelligent health monitoring system, e-Guardian, to help the lone elderly live independently. The heart of the system is a base station (BS) that acts as a gateway between cellular network and wireless sensor network (WSN). At seniors' sides are a number of wearable devices (WDs) which are capable of detecting accidental falls, inferring simple activities of daily livings (ADLs), monitoring body temperatures and possibly heart rates, etc. WDs communicate with BS, probably in several hops via range extenders (REs). During an emergency, alert signals will be sent to family members either via SMS or phone call. As data from all WDs aggregates at BS, network congestion will likely occur if every WD sends out massive data. To avoid this, e-Guardian takes a decentralized approach by processing sensor data locally in WDs instead of streaming raw sensor data to BS for processing. An interrupt-driven fall detection algorithm using a digital microelectromechanical system (MEMS) accelerometer has been designed to allow host microcontroller units (MCUs) to process data only upon interrupts and sleep the rest of the time, thus achieving months of standby time. The system consumes very little bandwidth so it can scale easily. The scalability allows e-Guardian to be deployed in not only households but also care centres, hospitals and even entire village/community areas.

关键词： Wireless low power accelerometers scalability

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Integration of model-based engineering with system safety analysis

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International Journal of Industrial and Systems engineering 2013年第2期15卷 193-215页

作者： Scholz, Sven Thramboulidis, Kleanthis Faculty of Transportation Sciences Friedrich List Institute of Railway Systems and Public Transport Dresden University of Technology D-01062 Dresden Germany Electrical and Computer Engineering University of Patras 26500 Patras Greece

System safety is the property of the system that characterises its ability to prevent from hazards, which may lead to accidents. Traditionally, system developers are not familiar with system safety analysis processes which are performed by safety engineers. One reason is the gap that exists between the traditional development processes, methodologies, notations and tools and the ones used in safety engineering. Semi-formal notations that support a coherent modelling of a system are considered mandatory for safety critical systems. With the evolvement of model-based engineering methods, several approaches have been proposed to integrate the traditional development process with safety engineering. In this paper, an approach to integrate safety engineering with an SysML-based development process is presented. Preliminary hazard analysis is adapted and applied to an SysML-based system requirements specification. A case study from the railway domain illustrates the proposed approach. Copyright © 2013 Inderscience Enterprises Ltd.

关键词： Railroads

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