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International Conference on Communications (COMM)

作者： Adriana-Cristina Enache Victor Valeriu Patriciu Faculty of Automatic Control and Computer Science Politehnica University Bucharest Romania Military Technical Academy Computer Science Bucharest Romania

Web Spam, or Spamdexing, is a form of Search Engine Optimization(SEO) spamming that hinders the efficiency of search engines. These types of exploits use unethical methods in order to place a web page into the first rank. Sabotaging the quality of the results retrieved by search engines can lead users to mistrust the search engine provider. Moreover, spam websites can be a starting point for phishing or malware attacks. Over the last decade Web Spamming has become an important problem. This paper shows a spam host detection approach that uses swarm intelligence. We test our model on two datasets (WEBSPAM-UK2011 and WEBSPAM-UK2007) and show that it can obtain a good accuracy. Moreover, we compared our approach with other popular classifiers (C4.5, SVM and Logistic Regression ) and empirically demonstrated that it can outperform them in some cases.

关键词： Unsolicited electronic mail Particle swarm optimization Training Accuracy Support vector machines Data mining Feature extraction

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LOCALIZATION OF IMPULSIVE DISTURBANCES IN ARCHIVE AUDIO SIGNALS USING PREDICTIVE MATCHED FILTERING

LOCALIZATION OF IMPULSIVE DISTURBANCES IN ARCHIVE AUDIO SIGN...

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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 Narutowicza 11/12 80-233 Gdansk Poland

ISBN: (纸本)9781479928941

The problem of elimination of impulsive disturbances from archive audio signals is considered and its new solution, called predictive matched filtering, is proposed. The new approach is based on the observation that a large percentage of noise pulses corrupting archive audio recordings have highly repetitive shapes that match several typical "patterns", called click templates. To localize noise pulses, click templates can be correlated with the sequence of multi-step-ahead prediction errors yielded by the model-based signal predictor. It is shown that predictive matched filtering is an efficient and computationally affordable disturbance localization technique - when combined with the classical detection method based on autoregressive modeling, it can significantly improve restoration results.

关键词： archives Filtration audio signals Audio recordings noise pulse inspection methods Noise autoregressive processes Audio recording clicking restoration disturbances jigs(templates)

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Stand for testing the electrical race car engine

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IOP Conference Series: Materials science and Engineering 2015年第1期95卷

作者： M Baier J Franiasz P Mierzwa D Wylenzek Silesian University of Technology Faculty of Mechanical Engineering 18A Konarskiego Street 44-100 Gliwice Poland Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science 16 Akademicka Street 44-100 Gliwice Poland

An engine test stand created especially for research of electrical race car is described in the paper. The car is an aim of Silesian Greenpower project whose participants build and test electrical vehicles to take part in international races in Great Britain. The engine test stand is used to test and measure the characteristics of vehicles and their engines. It has been designed particularly to test the electric cars engineered by students of Silesian Greenpower project. The article contains a description how the test stand works and shows its versatility in many areas. The paper presents both construction of the test stand, control system and sample results of conducted research. The engine test stand was designed and modified using PLM Siemens NX 8.5. The construction of the test stand is highly modular, which means it can be used both for testing the vehicle itself or for tests without the vehicle. The test stand has its own wheel, motor, powertrain and braking system with second engine. Such solution enables verifying various concepts without changing the construction of the vehicle. The control system and measurement system are realized by enabling National Instruments product myRIO (RIO - Reconfigurable Input/Output). This controller in combination with powerful LabVIEW environment performs as an advanced tool to control torque and speed simultaneously. It is crucial as far as the test stand is equipped in two motors - the one being tested and the braking one. The feedback loop is realized by an optical encoder cooperating with the rotor mounted on the wheel. The results of tests are shown live on the screen both as a chart and as single values. After performing several tests there is a report generated. The engine test stand is widely used during process of the Silesian Greenpower vehicle design. Its versatility enables powertrain testing, wheels and tires tests, thermal analysis and more.

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Space QUEST mission proposal: Experimentally testing decoherence due to gravity

arXiv

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arXiv 2017年

作者： Joshi, Siddarth Koduru Pienaar, Jacques Ralph, Timothy C. Cacciapuoti, Luigi McCutcheon, Will Rarity, John Giggenbach, Dirk Lim, Jin Gyu Makarov, Vadim Fuentes, Ivette Scheidl, Thomas Beckert, Erik Bourennane, Mohamed Bruschi, David Edward Cabello, Adan Capmany, Jose Carrasco-Casado, Alberto Diamanti, Eleni Dusek, Miloslav Elser, Dominique Gulinatti, Angelo Hadfield, Robert H. Jennewein, Thomas Kaltenbaek, Rainer Krainak, Michael A. Lo, Hoi-Kwong Marquardt, Christoph Milburn, Gerard Peev, Momtchil Poppe, Andreas Pruneri, Valerio Renner, Renato Salomon, Christophe Skaar, Johannes Solomos, Nikolaos Stipčević, Mario Torres, Juan P. Toyoshima, Morio Villoresi, Paolo Walmsley, Ian Weihs, Gregor Weinfurter, Harald Zeilinger, Anton Zukowski, Marek Ursin, Rupert Institute for Quantum Optics and Quantum Information Austrian Academy of Sciences Boltzmanngasse 3 ViennaA-1090 Austria Centre for Quantum Computation & Communication Technology Department of Physics University of Queensland St LuciaQLD4072 Australia European Space Agency Keplerlaan 1 - P.O. Box 299 AG Noordwijk ZH2200 Netherlands Department of Electrical and Electronic Engineering University of Bristol Merchant Venturers Building Woodland Road BristolBS8 1UB United Kingdom German Aerospace Center Institute of Communications and Navigation Muenchner Strasse 20 Wessling82234 Germany Institute for Quantum Computing Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada Institute for Quantum Computing Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada Precision Engineering Department Fraunhofer IOF Albert-Einstein-Straße 7 Jena07745 Germany Physics department Stockholm University Albanova universitetscentrum Universitetsvägen 10 Stockholm114 18 Sweden York Centre for Quantum Technologies Department of Physics University of York HeslingtonYO10 5DD United Kingdom University of Seville SevillaE-41012 Spain iTEAM Research Institute Universitat Politcnica de Valencia Valencia46022 Spain 4-2-1 Nukui-Kitamachi Koganei Tokyo184-8795 Japan CNRS Universite Pierre et Marie Curie Paris75005 France Department of Optics Faculty of Science Palacky University 17. Iistopadu 12 Olomouc772 00 Czech Republic Max Planck Institute for the Science of Light Bldg. 24 Günther-Scharowsky Str. 1 ErlangenD-91058 Germany Piazza Leonardo da Vinci 32 Milano20133 Italy School of Engineering University of Glasgow GlasgowG12 8LT United Kingdom Vienna Center of Quantum Science and Technology Faculty of Physics University of Vienna Boltzmanngasse 5 ViennaA-1090 Austria NASA Goddard Space Flight Center GreenbeltMD20771 United States Center for Quantum Information and Quantum Con

Models of quantum systems on curved space-times lack sufficient experimental verification. Some speculative theories suggest that quantum properties, such as entanglement, may exhibit entirely different behavior to purely classical systems. By measuring this effect or lack thereof, we can test the hypotheses behind several such models. For instance, as predicted by Ralph and coworkers [T C Ralph, G J Milburn, and T Downes, Phys. Rev. A, 79(2):22121, 2009;T C Ralph and J Pienaar, New Journal of Physics, 16(8):85008, 2014], a bipartite entangled system could decohere if each particle traversed through a different gravitational field gradient. We propose to study this effect in a ground to space uplink scenario. We extend the above theoretical predictions of Ralph and coworkers and discuss the scientific consequences of detecting/failing to detect the predicted gravitational decoherence. We present a detailed mission design of the European Space Agency's (ESA) Space QUEST (Space - Quantum Entanglement Space Test) mission, and study the feasibility of the mission scheme. Copyright © 2017, The Authors. All rights reserved.

关键词： Quantum entanglement

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ONSIDE: Socially-aware and Interest-based dissemination in opportunistic networks

ONSIDE: Socially-aware and Interest-based dissemination in o...

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IEEE Symposium on Network Operations and Management

作者： Radu-Ioan Ciobanu Radu-Corneliu Marin Ciprian Dobre Valentin Cristea Constandinos X. Mavromoustakis Computer Science Department Faculty of Automatic Control and Computers University Politehnica of Bucharest Bucharest Romania Department of Computer Science University of Nicosia Nicosia Cyprus

ISBN: (纸本)9781479909117

Data dissemination in opportunistic networks poses a series of challenges, since there is no central entity aware of all the nodes' subscriptions. Each individual node is only aware of its own interests and those of a node that it is contact with, if any. Thus, dissemination is generally performed using epidemic algorithms that flood the network, but they have the disadvantage that the network overhead and congestion are very high. In this paper, we propose ONSIDE, an algorithm that leverages a node's online social connections (i.e. friends on social networks such as Facebook or Google+), its interests and the history of contacts, in order to decrease congestion and required bandwidth, while not affecting the overall network's hit rate and the delivery latency. We present the results of testing our algorithm using an opportunistic network emulator and three mobility traces taken in different environments.

关键词： Social network services Algorithm design and analysis Measurement History Routing Bandwidth Mobile handsets

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Semantic report search engine — Questor

Semantic report search engine — Questor

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

作者： Andrei Vasilateanu Nicolae Goga Alin Moldoveanu Faculty of Engineering in Foreign Languages University Politehnica of Bucharest Romania Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Romania

As ever more data is collected in the business processes of large enterprises, the decision makers need new business intelligence tools. Enterprise reporting tools have been available for some time, however, while reports aggregate business data, the large number of reports can become unmanageable. The European funded project Questor aims to create a revolutionary product that will eliminate the complexities inherent in the report management workflow. The final purpose is to make querying the report database as simple as addressing a question in natural language. This paper gives an overview over the concept of the Questor project, its software architecture, algorithms and results.

关键词： Ontologies Search engines Semantics Engines Crawlers Databases Resource description framework

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Automated measurement setup for microcontrollers and magnetic sensors

UPB Scientific Bulletin, Series C: Electrical Engineering

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UPB Scientific Bulletin, Series C: Electrical Engineering 2013年第1期75卷 91-100页

作者： Dochia, RǍzvan Bogdan, Daniela Burileanu, Corneliu Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Romania

În aceastǍ lucrare se vor prezenta rezultatele obt〉inute în urma dezvoltǍrii unor programe de automatizare a mǍsurǍtorilor. Acestea au fost folosite pentru demonstrarea tehnicilor legate de consumul de putere. Pentru validarea dar şi pentru demonstrarea versatilitǍt〉ii tehnicilor folosite vor fi prezentate si rezultatele obt〉inute în cazul mǍsuratorilor unui senzor magnetic pentru care se realizeazǍ şi o corelare cu rezultatele simulǍrilor. In this paper there will be presented the results obtained after the implementation of an automated measurement setup. These were used to prove the proposed methods of power consumption. To validate and to demonstrate the versatility of the techniques used, there will also be a presentation of the results obtained for measuring a magnetic sensor for which a correlation with the simulation results is also performed.

关键词： Microcontrollers

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Performance analysis of lustre file systems based on benchmarking for a cluster system

UPB Scientific Bulletin, Series C: Electrical Engineering

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UPB Scientific Bulletin, Series C: Electrical Engineering 2013年第1期75卷 27-36页

作者： Negru, CǍtǍlin Pop, Florin Dobre, Ciprian Cristea, Valentin Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Romania

În sistemele distribuite de mari dimensiuni o clasǍ importantǍ de aplicat〉ii este cea a aplicat〉iilor data-intensive (din mediile de cercetare şi de afaceri). Specificul acestor aplicat〉ii îl reprezintǍ cerint〉ele de I/O asupra sistemelor de fişiere. Sistemele de fişiere, în aceste condit〉ii pot produce o scǍdere a performant〉ei aplicat〉iilor. Arhitectura sistemelor distribuite are un rol important cu privire la scalabilitate şi performant〉Ǎ. Mediul de transmisie oferit de ret〉elele de comunicat〉ie este un factor cheie în proiectarea şi implementarea sistemelor de stocare. În acest articol este prezentatǍ analiza sistemelor de fişiere distribuite moderne (cu accent pe sistemul Lustre), prezentând argumentele pro şi contra cu privire la suportul operat〉iilor I/O în aplicat〉iile data-intensive. Sistemul Lustre este analizat pentru cluster-ul NCIT din cadrul UPB. Au fost rulate teste de benchmark folosind diferite scenarii de test pentru operat〉iile de citire şi scriere pentru determinarea şabloanelor optime, în vederea obt〉inerii unei performant〉e ridicate pentru aplicat〉ii. Many of today's applications in large scale distributed systems fall under the category of data-intensive processing (with many scientific or business cases). The specifics of data-intensive applications are the requirements of many I/O requests. In this case the I/O system becomes a major bottleneck for the overall performance of the application. The architecture of a distributed file system for support of such applications has an important role regarding scalability and performance. The network components are a key factor that has various impacts on the overall performance. In this paper we present an analysis of two modern distributed file systems (in particular for LUSTRE and NFS). We present their pros and cons arguments for I/O support in data-intensive applications. We determine the main characteristics of Lustre and its suitability to support complex scientific applications in a dedicated

关键词： Benchmarking

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An agent-oriented and service-oriented architecture in medicine

UPB Scientific Bulletin, Series C: Electrical Engineering

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UPB Scientific Bulletin, Series C: Electrical Engineering 2013年第1期75卷 3-16页

作者： Moldoveanu, Florica Cristescu, Sorin-Alexandru Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Romania

PânǍ de curând, sistemele informatice medicale erau proprietatea anumitor institut〉ii, lucru care a avut un impact negativ asupra calitǍt〉ii serviciilor medicale. OdatǍ cu introducerea standardului HL7 v3 s-au creat premizele abordǍrii problemei interoperabilitǍt〉ii. Din pǍcate, folosirea standardului HL7 este limitatǍ şi defectuos înt〉eleasǍ, în timp ce vechile aplicat〉ii încǍ dominǍ lumea medicalǍ. AceastǍ lucrare propune o arhitecturǍ bazatǍ pe sisteme multiagent şi web semantic care abordeazǍ problema interoperabilitǍt〉ii între sistemele din domeniul medical, având ca nucleu un motor de cǍutare semanticǍ pentru servicii web şi agent〉i software. Traditionally, medical information systems have been proprietary to certain institutions, with a negative impact on the quality of medical services. The introduction of the HL7 standard version 3, helps in defining a better approach to the issue of interoperability. However, the usage of the HL7 standard is limited and misunderstood, while the traditional proprietary applications still dominate the medical world. This paper proposes an architecture based on multiagent systems and semantic web that addresses the interoperability between medical information systems, having as kernel a semantic web service as a solution to the registration and discovery of web services and software agents.

关键词： Semantic Web

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Local Texton Dissimilarity with applications on biomass classification

Local Texton Dissimilarity with applications on biomass clas...

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International Conference on computer Vision Theory and Applications (VISAPP)

作者： Radu Tudor Ionescu Andreea-Lavinia Popescu Dan Popescu Marius Popescu Faculty of Mathematics and Computer Science University of Bucharest Bucharest Romania Faculty of Automatic Control and Computer Science Politehnica University of Bucharest 313 Splaiul Independentei Street Romania Faculty of Mathematics and Computer Science University of Bucharest 14 Academiei Street Romania

ISBN: (纸本)9781479976867

Texture classification, texture synthesis, or similar tasks are an active topic in computer vision and pattern recognition. This paper aims to present a novel texture dissimilarity measure based on textons, namely the Local Texton Dissimilarity (LTD), inspired from (Dinu et al., 2012). Textons are represented as a set of features extracted from image patches. The proposed dissimilarity measure shows its application on biomass type identification. A new data set of biomass texture images is provided by this work, which is available at http://***. Images are separated into three classes, each one representing a type of biomass. The biomass type identification and quality assessment is of great importance when one in the biomass industry needs to produce another energy product, such as biofuel, for example. Two more experiments are conducted on popular texture classification data sets, namely Brodatz and UIUCTex. The proposed method benefits from a faster computational time compared to (Dinu et al., 2012) and a better accuracy when used for texture classification. The performance level of the machine learning methods based on LTD is comparable to the state of the art methods.

关键词： Biomass Feature extraction Kernel Accuracy Learning systems Gray-scale Fractals

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