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International Conference on Information Technology and Electrical engineering (ICITEE)

作者： Inggriani Liem Transmissia Semiawan Ade Chandra Suprihanto Data and Software Engineering Research Group School of Electrical Engineering and Informatics ITB Bandung Indonesia Department of Computer Engineering and Informatics Bandung State Polytechnics Bandung

In this paper, we propose a series of applications that represent a system family for processing Research Data. The whole system is a model of complete data flow of "research", from data capturing, processing, until intelligent data analysis. Data engineering, Software engineering, Domain engineering and Ontology engineering are used for the development of the system. We also described tools and technologies to be used in building the system. The prototype of a small scale system has been built as a proof of concept of this family of system, for the domain of "Research" in Indonesian context. The aim of building this prototype are: (a) to provide an architectural description prototype of a knowledge repository where Indonesian Context Research as a central domain (b) to comprehend a software engineering for software system family.

关键词： Ontologies Software Data models Unified modeling language Prototypes Software engineering Information systems

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Advances in Databases and Information Systems 1

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丛书名： Lecture Notes in computer Science

1000年

作者： Yannis Manolopoulos Goce Trajcevski Margita Kon-Popovska

ISBN: (数字)9783319109336

ISBN: (纸本)9783319109329

This book constitutes the thoroughly refereed proceedings of the 18th East European Conference on Advances in Databases and Information Systems, ADBIS 2014, held in Ohrid, Macedonia, in September 2014. The 26 revised full papers presented together with one invited talk were carefully selected and reviewed from 82 submissions. The papers are organized in topical sections on data models and query languages; data warehousing; query and data-flow optimization; information extraction and integration; spatial, temporal and streaming data; data mining and knowledge discovery; data organization and physical issues; and data and business processes.

关键词： Database Management Information Systems Applications (incl. Internet) Data Mining and Knowledge Discovery

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Analysis of normal human retinal vascular network architecture using multifractal geometry

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International Journal of Ophthalmology(English edition) 2017年第3期10卷 434-438页

作者： Stefan Talu Sebastian Stach Dan Mihai Calugaru Carmen Alina Lupascu Simona Delia Nicoara Discipline of Descriptive Geometry and Engineering Graphics Department of AETFaculty of Mechanical EngineeringTechnical University of Cluj-Napoca103-105 B-dul Muncii St.Cluj-Napoca 400641ClujRomania Department of Biomedical Computer Systems Institute of InformaticsFaculty of Computer Science and Materials ScienceUniversity of SilesiaBedzifiska 3941-205 SosnowiecPoland Discipline of Ophthalmology Department of Surgical Speci-alties and Medical ImagingFaculty of Medicine'Iuliu Halie-ganu'University of Medicine and Pharmacy Cluj-Napoca8 Victor Babes St.Cluj-Napoca 400012ClujRomania Department of Mathematics and Informatics University of PalermoVia Archirafi 34Palermo 90123Italy

AIM：To apply the multifractal analysis method as a quantitative approach to a comprehensive description of the microvascular network architecture of the normal human ***：Fifty volunteers were enrolled in this study in the Ophthalmological Clinic of Cluj-Napoca,Romania,between January 2012 and January 2014. A set of 100 segmented and skeletonised human retinal images,corresponding to normal states of the retina were studied. An automatic unsupervised method for retinal vessel segmentation was applied before multifractal analysis. The multifractal analysis of digital retinal images was made with computer algorithms,applying the standard boxcounting method. Statistical analyses were performed using the Graph Pad In Stat ***：The architecture of normal human retinal microvascular network was able to be described using the multifractal geometry. The average of generalized dimensions（D_q）for q=0,1,2,the width of the multifractal spectrum（Δα=α_（max）-α_（min））and the spectrum arms＇ heights difference（│Δf│）of the normal images were expressed as mean±standard deviation（SD）：for segmented versions,D_0=1.7014±0.0057; D_1=1.6507±0.0058; D_2=1.5772±0.0059; Δα=0.92441±0.0085; │Δf│= 0.1453±0.0051; for skeletonised versions,D_0=1.6303±0.0051; D_1=1.6012±0.0059; D_2=1.5531± 0.0058; Δα=0.65032±0.0162; │Δf│= 0.0238±0.0161. The average of generalized dimensions（D_q）for q=0,1,2,the width of the multifractal spectrum（Δα）and the spectrum arms＇ heights difference（│Δf│）of the segmented versions was slightly greater than the skeletonised ***：The multifractal analysis of fundus photographs may be used as a quantitative parameter for the evaluation of the complex three-dimensional structure of the retinal microvasculature as a potential marker for early detection of topological changes associated with retinal diseases.

关键词： generalized dimensions multifractal retinal vessel segmentation retinal image analysis retinal microvasculature standard box-counting method

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Performance evaluation of service searching using aggregation in peer-to-peer Service Overlay Networks

Performance evaluation of service searching using aggregatio...

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IFIP/IEEE International Symposium on Integrated Network Management

作者： Fiorese, Adriano Simões, Paulo Boavida, Fernando UDESC University of the State of Santa Catarina CCT Department of Computer Science - DCC 89223-100 Joinville-SC Brazil CISUC University of Coimbra Pólo II Department of Informatics Engineering - DEI 3030-290 Coimbra Portugal

ISBN: (纸本)9781424492213

This paper presents a performance evaluation in the context of the Aggregation Service (AgS). The AgS is a P2P overlay-tier whose purpose is to aggregate the services and service components maintained by service providers in a P2P Service Overlay Network (SON). The performance evaluation takes into account two metrics: 1) the average path length, and 2) the response time. Both of them are used in the comparison of two environments: 1) AgS and 2) a P2P SON without AgS. Additionally, the searching performance in the environment with AgS is compared with a P2P SON that uses Gnutella as the searching mechanism. The simulation results clearly show an improvement in the performance of the search operations when the AgS is used to the detriment of the searches performed without it. The results also show AgS is better suited for use in small overlays. © 2011 IEEE.

关键词： Peer to peer networks

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Networking 2004 1

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丛书名： Lecture Notes in computer Science

1000年

作者： Nikolas Mitrou Kimon Kontovasilis George N. Rouskas Ilias Iliadis Lazaros Merakos

ISBN: (数字)9783540246930

ISBN: (纸本)9783540219590

This book contains the refereed proceedings of the 3rd International IFIP-TC6 Networking Conference, Networking 2004. Conferences in the Networking series span the interests of several distinct, but related, TC6 working groups, including Working Groups 6.2, 6.3, and 6.8. Re?ecting this, the conference was structured with three Special Tracks: (i) Networking Technologies, Services, and Protocols; (ii) Performance of computer and Communication Networks; and (iii) Mobile and Wireless Communications. However, beyond providing a forum for the presentation of high-quality - search in various complementary aspects of networking, the conference was also targetedtocontributingtoauni?edviewofthe?eldandtofosteringtheinter- tion and exchange of fruitful ideas between the various related (and overlapping) specialized subcommunities therein. Towards this second objective, more than a few conference sessions (and thematic sections in this book) ‘cut across’ the Special Tracks, along more generic or fundamental concepts. Networking 2004 was fortunate to attract very high interest among the c- munity, and the conference received 539 submissions from 44 countries in all ?ve continents. These ?gures correspond to a remarkable increase in subm- sions from the previous very successful events (roughly, a 156% increase over Networking 2000 and 71% over Networking 2002), and indicate that Netw- king conferences are progressively becoming established as worldwide reference events in the ?eld.

关键词： computer Communication Networks System Performance and Evaluation Information Systems Applications (incl. Internet) Software engineering Management of Computing and Information Systems Communications engineering, Networks

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Load Balancing in Wireless Sensor Networks using Kirchhoff's Voltage Law

Load Balancing in Wireless Sensor Networks using Kirchhoff's...

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IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： S. Toumpis S. Gitzenis Electrical & Computer Engineering Department University of Cyprus Cyprus Computer & Communication Engineering Department University of Thessally Greece Informatics & Telematics Institute CERTH Greece

ISBN: (纸本)9781424435128

We study load balancing in wireless networks with a single class of traffic, focusing our attention on an important example, i.e., wireless sensor networks. The analysis is based on the wireless minimum cost problem, an optimization problem that implicitly captures the effects of interference through the novel use of an arc cost function that depends on the amount of traffic flowing through nearby links. We present an algorithm that optimizes the flow by modifying the traffic along cycles constructed during an initialization phase. Its operation may be viewed as trying to satisfy Kirchhoff's Voltage Law on an electric circuit containing interferistors. It is robust, distributed, with minimal communication overhead, and converges quickly. Furthermore, when the traffic is elastic, the algorithm can be easily modified to also perform congestion control.

关键词： Load management Wireless sensor networks Kirchhoff's Law Communication system traffic control Telecommunication traffic Interference Cost function computer networks Circuits Monitoring

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Personalization Mechanism for Delivering News Articles on the User's Desktop

Personalization Mechanism for Delivering News Articles on th...

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International Conference on Internet and Web Applications and Services (ICIW)

作者： Christos Bouras Vassilis Tsogkas Navigation and Instrumentation Research Group (NavINST) Electrical and Computer Engineering Department University of Patras Greece Computer Engineering and Informatics Department University of Patras Greece

Deploying a generalized, multi-functional mechanism that produces good results for personalizing summarized and categorized news articles, seems to be a panacea for most of the text-based, information retrieval needs. In this paper, we present the personalization algorithm, as well as a client side application that are used as an extension to an already constructed system, PeRSSonal, in order to deliver summarized and pre-categorized news articles to the user.

关键词： Information filtering Information filters Application software informatics Filtering algorithms Collaboration Data mining Web and internet services Electronic mail Information retrieval

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Cybersecurity of Sensors on Smart Vehicles: Review of Threats and Solutions 6

Cybersecurity of Sensors on Smart Vehicles: Review of Threat...

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6th International Conference on computer and informatics engineering, IC2IE 2023

作者： Putro, Prasetyo Adi Wibowo Amelia, Fetty Pidanic, Jan Suhartanto, Heru Rahardjo, Imam Arif Imandeka, Ejo Universitas Indonesia Faculty of Computer Science Depok Indonesia Cryptographic Hardware Engineering Politeknik Siber Dan Sandi Negara Bogor Indonesia University of Pardubice Faculty of Electrical Engineering and Informatics Pardubice Czech Republic Universitas Negeri Jakarta Department of Electrical Engineering Jakarta Indonesia

ISBN: (纸本)9798350345162

The use of sensors in smart vehicles brings benefits and vulnerabilities. Different kinds of sensors in smart vehicles are vulnerable to cyber-attack. Until now, the investigation of challenges and solutions for in-vehicle cybersecurity hasn't discussed various sensor objects and their correlation. In this study, we studied the cyber security problems of sensors in smart vehicles and how to overcome them. The research was designed as Systematic Literature Review (SLR) using the Kitchenham methodology with modification in the filtering phase using the artificial intelligence application, Elicit, to identify the problems, conclusions, and methodology description. Seventeen publications from 2016 until 2023 were gained from five databases. As a result, we find that the most discussed object related to cybersecurity sensors on smart vehicles are Electronic Control Units. Spoofing and jamming is still the most addressed threat, and machine learning is the most utilized solution to be implemented in detection systems. Advanced detection systems are incorporating updated attack models. We also suggest using updated attack models and machine learning algorithms to ensure the safety and security of smart vehicle technology. All identified sensor technology correlated using mind maps under the Intelligent Transport System theory. © 2023 IEEE.

关键词： cybersecurity Kitchenham sensor SLR smart vehicles solution threat

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Efficient resource management via dynamic bandwidth sharing in a WDM-PON ring-based architecture

Efficient resource management via dynamic bandwidth sharing ...

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International Conference on Transparent Optical Networks

作者： Kostas Ramantas Kyriakos Vlachos Georgios Ellinas Antonis Hadjiantonis Computer Engineering and Informatics Dept & Computer Technology Inst Univ. of Patras Rio Greece Department of Electrical and Computer Engineering University of Cyprus Cyprus Department of Engineering University of Nicosia Cyprus

In this work, we propose an efficient resource management approach for WDM-PON ring architectures that supports dynamic bandwidth allocation and sharing of downstream wavelengths. We propose a modification in the ONU design, to dynamically setup virtual circuits for inter-ONU communication. The reservation mechanism is arbitrated by the OLT, which also monitors the traffic imbalances of downstream channels.

关键词： Optical network units Local area networks Bandwidth Wavelength division multiplexing Passive optical networks Dynamic scheduling Channel allocation

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Jointly Learned Symbol Detection and Signal Reflection in RIS-Aided Multi-user MIMO Systems 55

Jointly Learned Symbol Detection and Signal Reflection in RI...

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55th Asilomar Conference on Signals, Systems and computers, ACSSC 2021

作者： Wang, Liuhang Shlezinger, Nir Alexandropoulos, George C. Zhang, Haiyang Wang, Baoyun Eldar, Yonina C. Nanjing University of Posts and Telecommunications School of Communication and Information Engineering Nanjing China Ben-Gurion University of the Negev School of Electrical and Computer Engineering Beer-Sheva Israel National and Kapodistrian University of Athens Department of Informatics and Telecommunications Greece Weizmann Institute of Science Faculty of Math and Computer Science Rehovot Israel

ISBN: (纸本)9781665458283

Reconfigurable Intelligent Surfaces (RISs) are regarded as a key technology for future wireless communications, enabling programmable radio propagation environments. However, the passive reflecting feature of RISs induces notable challenges on channel estimation, making coherent symbol detection a challenging task. In this paper, we consider the uplink of RIS-aided multi-user Multiple-Input Multiple-Output (MIMO) systems and propose a Machine Learning (ML) approach to jointly design the multi-antenna receiver and configure the RIS reflection coefficients, which does not require explicit full knowledge of the channel input-output relationship. Our approach devises a ML-based receiver, while the configurations of the RIS reflection patterns affecting the underlying propagation channel are treated as hyperparameters. Based on this system design formulation, we propose a Bayesian ML framework for optimizing the RIS hyperparameters, according to which the transmitted pilots are directly used to jointly tune the RIS and the multi-antenna receiver. Our simulation results demonstrate the capability of the proposed approach to provide reliable communications in non-linear channel conditions corrupted by Gaussian noise. © 2021 IEEE.

关键词： MIMO systems

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