616 research outputs found
Linked data paradigm for enterprises: information integration and value chain
No full textDaniel Hladky – Lecturer, Faculty of Business Informatics, National Research University Higher School of Economics. Address: 20, Myasnitskaya str., Moscow, 101000, Russian Federation. E-mail: [email protected] Maltseva – Professor, head of Department of Innovation and Business in Information Technologies, acting dean of Faculty of Business Informatics, National Research University Higher School of Economics. Address: 20, Myasnitskaya str., Moscow, 101000, Russian Federation. E-mail: [email protected] integration in enterprises is a crucial but at the same time costly and challenging problem. The goal of this paper is to critically analyse current state of the art methods for data integration such as Service Oriented Architecture (SOA), enterprise taxonomy approach, search across data silos and database integration tools such as Master Data Management (MDM). The result of the analysis is compared to the Linked Data Paradigm and highlights the benefit of the Linked Data technology. A key focus is set on the life cycle including the conversion of raw data into RDF, the linking and fusion of entities process. As a result the author proposes to apply the Linked Data Paradigm for information integration and develops a conceptual model for the Linked Data Value Chain. The Linked Data Value Chain model is described using the participating entities, describing the roles they and type of data they can have within the process. A brief introduction to value chain, especially to the value chain within CRM is given. The paper concludes by a proof of concept using the proposed model in relation to the CRM value chain.The article is published in English. Full text in English is available (see the file attached).Daniel Hladky – Lecturer, Faculty of Business Informatics, National Research University Higher School of Economics. Address: 20, Myasnitskaya str., Moscow, 101000, Russian Federation. E-mail: [email protected] Maltseva – Professor, head of Department of Innovation and Business in Information Technologies, acting dean of Faculty of Business Informatics, National Research University Higher School of Economics. Address: 20, Myasnitskaya str., Moscow, 101000, Russian Federation. E-mail: [email protected] integration in enterprises is a crucial but at the same time costly and challenging problem. The goal of this paper is to critically analyse current state of the art methods for data integration such as Service Oriented Architecture (SOA), enterprise taxonomy approach, search across data silos and database integration tools such as Master Data Management (MDM). The result of the analysis is compared to the Linked Data Paradigm and highlights the benefit of the Linked Data technology. A key focus is set on the life cycle including the conversion of raw data into RDF, the linking and fusion of entities process. As a result the author proposes to apply the Linked Data Paradigm for information integration and develops a conceptual model for the Linked Data Value Chain. The Linked Data Value Chain model is described using the participating entities, describing the roles they and type of data they can have within the process. A brief introduction to value chain, especially to the value chain within CRM is given. The paper concludes by a proof of concept using the proposed model in relation to the CRM value chain.The article is published in English. Full text in English is available (see the file attached)
Getting Rid of Gender: Multiple Perspectives on the Eradication of Sexual Difference
No full textNo abstract available."Getting Rid of Gender: Multiple Perspectives on the Eradication of Sexual Difference." with J. Aguilar, K. Hladky, J. Nall, K. Winters, and J. Ryan. Roundtable discussion at National Women's Studies Association. Denver. Nov 11, 2010
Analysis of the propagation of plane acoustic waves in passive periodic materials using the finite element method
No full textInternational audienceThe finite element approach has been previously used, with the help of the ATILA code, to model the scattering of acoustic waves by single or doubly periodic passive structures ͓A. C. Hladky-Hennion et al., J. Acoust. Soc. Am. 90, 3356-3367 ͑1991͔͒. This paper presents a new extension of this technique to the analysis of the propagation of plane acoustic waves in passive periodic materials without losses and describes with particular emphasis its application to doubly periodic materials containing different types of inclusions. In the proposed approach, only the unit cell of the periodic material has to be meshed, thanks to Bloch-Floquet relations. The modeling of these materials provides dispersion curves from which results of physical interest can be easily extracted: identification of propagation modes, cutoff frequencies, passbands, stopbands, as well as effective homogeneous properties. In this paper, the general method is first described, and particularly the aspects related to the periodicity. Then a test example is given for which analytical results exist. This example is followed by detailed presentations of finite element results, in the case of periodic materials containing inclusions or cylindrical pores. The homogenized properties of porous materials are determined with the help of an anisotropic model, in the large wavelength limit. A validation has been carried out with periodically perforated plates, the resonance frequencies of which have been measured. The efficiency and the versatility of the method is thus clearly demonstrated
Extension of the crosstalk cancellation method in ultrasonic transducer arrays from the harmonic regime to the transient one
No full textInternational audienceThis paper describes a procedure to extend the crosstalk correction method presented in a previous paper [A. Bybi, S. Grondel, J. Assaad, A.–C. Hladky-Hennion, M. Rguiti, Reducing crosstalk in array structures by controlling the excitation voltage of individual elements: a feasibility study, Ultrasonics, 53 (6) (2013) 1135–1140] from the harmonic regime to the transient one. For this purpose a part of an ultrasonic transducer array radiating in water is modeled around the frequency 0.5 MHz using the finite element method. The study is carried out at low frequency in order to respect the same operating conditions than the previous paper. This choice facilitated the fabrication of the transducer arrays and the comparison of the numerical results with the experimental ones. The modeled array is composed of seventeen elements with the central element excited, while the others are grounded. The matching layers and the backing are not taken into account which limits the crosstalk only to the piezoelectric elements and fluid. This consideration reduces the structure density mesh and results in faster computation time (about 25 min for each configuration using a computer with a processor Intel Core i5-3210M, frequency 2.5 GHz and having 4 Go memory (RAM)).The novelty of this research work is to prove the efficiency of the crosstalk correction method in large frequency band as it is the case in medical imaging. The numerical results show the validity of the approach and demonstrate that crosstalk can be reduced by at least 13 dB in terms of displacement. Consequently, the directivity pattern of the individual element can be improved
Level repulsion and evanescent waves in sonic crystals
No full textThis work theoretically and experimentally reports the evanescent connections between propagating bands in periodic acoustic materials. The complex band structures obtained by solving for the k(¿) problem reveal a complete interpretation of the propagation properties of these systems. The prediction of evanescent modes, nonpredicted by classical ¿(k - ) methods, is of interest for the understanding of these propagation properties. Complex band structures provide an interpretation of the evanescent coupling and the level repulsion states showing the possibility of controlling evanescent waves in periodic materials. © 2011 American Physical Society.V.R.G. and L.M.G.R. would like to thank the facilities provided by the IEMN UMR CNRS 8520. L.M.G.R. would like to thank the UPV for Grant No. PAID-00-11. V.R.G. is grateful for the support contracts of the UPV CEI-01-11. This work was supported by MCI Secretaria de Estado de Investigacion (Spanish government) and the FEDER funds, under Grant No. MAT2009-09438.Romero García, V.; Vasseur, J.; Hladky Hennion, AC.; García Raffi, LM.; Sánchez Pérez, JV. (2011). Level repulsion and evanescent waves in sonic crystals. Physical Review B. 84:2123021-2123024. https://doi.org/10.1103/PhysRevB.84.212302S212302121230248
Theoretical and experimental evidence of level repulsion states and evanescent modes in sonic crystal stubbed waveguides
No full textThe complex band structures calculated using the extended plane
wave expansion (EPWE) reveal the presence of evanescent modes in periodic
systems, never predicted by the classical ω(kE) methods, providing novel
interpretations of several phenomena as well as a complete picture of the
system. In this work, we theoretically and experimentally observe that in the
ranges of frequencies where a deaf band is traditionally predicted, an evanescent
mode with excitable symmetry appears, changing drastically the interpretation
of the transmission properties. On the other hand, the simplicity of the sonic
crystals in which only the longitudinal polarization can be excited is used to
interpret, without loss of generality, the level repulsion between symmetric and
antisymmetric bands in sonic crystals as the presence of an evanescent mode
connecting both repelled bands. These evanescent modes, obtained using EPWE,
explain both the attenuation produced in this range of frequencies and the
transfer of symmetry from one band to the other in good agreement with both
experimental results and multiple scattering predictions. Thus, the evanescent
properties of the periodic system have been revealed to be necessary for the
design of new acoustic and electromagnetic applications based on periodicity.VRG and LMGR are grateful for the hospitality and the facilities provided by the Institut d'Electronique, de Microelectronique et de Nanotechnologie (IEMN UMR CNRS 8520). LMGR thanks the Universidad Politecnica de Valencia for the grant 'Programa de Apoyo a la Investigacion y Desarrollo (PAID-00-11)'. VRG is grateful for the support provided by 'Programa de Contratos Post-Doctorales con Movilidad UPV (CEI-01-11)'. This work was supported by MCI Secretaria de Estado de Investigacion (the Spanish government) and FEDER funds under grant no. MAT2009-09438.Romero García, V.; Vasseur, J.; García-Raffi, LM.; Hladky-Hennion, A. (2012). Theoretical and experimental evidence of level repulsion states and evanescent modes in sonic crystal stubbed waveguides. New Journal of Physics. 14(230):1-21. https://doi.org/10.1088/1367-2630/14/2/023049S1211423
Magnetic resonance imaging characterisation of an α-synuclein model of Parkinson’s disease
No full textThis folder contains data used in the paper:Magnetic resonance imaging characterisation of an α-synuclein model of Parkinson’s disease Chirine KATRIB, Hector HLADKY, Kelly TIMMERMAN, Nicolas DURIEUX, Nathalie DUTHEIL, Erwan BEZARD, David DEVOS, Charlotte LALOUX and Nacim BETROUNI.To be pubished in European Journal of Neuroscience (Update October 2024).Please contact the corresponding author if you need further details about this work and dataNacim Betrouni, PhDFrench Natinal Institute of Health and Medical Research (INSERM)Lille NeuroScience & [email protected] DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV
Adjustments for the Display of Quantized Ion Channel Dwell Times in Histograms with Logarithmic Bins
No full textAbstractDwell-time histograms are often plotted as part of patch-clamp investigations of ion channel currents. The advantages of plotting these histograms with a logarithmic time axis were demonstrated by Blatz and Magleby (1986, J. Physiol. (Lond.). 378:141–174), McManus et al. (1987, Pflügers Arch. 410:530–553), and Sigworth and Sine (1987, Biophys. J. 52:1047–1054). Sigworth and Sine argued that the interpretation of such histograms is simplified if the counts are presented in a manner similar to that of a probability density function. However, when ion channel records are recorded as a discrete time series, the dwell times are quantized. As a result, the mapping of dwell times to logarithmically spaced bins is highly irregular; bins may be empty, and significant irregularities may extend beyond the duration of 100 samples. Using simple approximations based on the nature of the binning process and the transformation rules for probability density functions, we develop adjustments for the display of the counts to compensate for this effect. Tests with simulated data suggest that this procedure provides a faithful representation of the data
The Structure of the System of Corruption Crime Subjects according to the Legislation of Ukraine
No full textФеномен коррупции, как известно, характерен практически для всех сфер жизнедеятельности человека. Потому, закономерным было бы предположить, что антикоррупционное законодательство будет сообразным образом запрещать коррупционные деяния всем субъектам, что способны объективировать в фактической действительности господство коррупции. Данный вопрос крайне актуален, принимая во внимание следующий факт: если существуют группы субъектов, которые своими действиями (или бездействием) обуславливают коррупцию, но они не рассматриваются законодателем в качестве субъектов коррупционных преступлений, соответственно, нельзя говорить ни о должной эффективности антикоррупционного законодательства, ни о надлежащем качестве антикоррупционной деятельности. Вместе с тем, анализируя законодательство различных государств, можно прийти к выводу, что в мире до сих пор не существует единого перечня субъектов коррупционных преступлений, что, с одной стороны, связано с различным подходом к пониманию феномена коррупции, а, с другой стороны – делает невозможным формулирование соответствующей унифицированной дефиниции.В статье автором осуществляется попытка систематизировать исчерпывающий перечень субъектов коррупционных преступлений по действующему законодательству Украины. Соответствующей систематизации субъектов коррупционных преступлений предваряет изложение общего представления о субъекте коррупционного преступления в Украине, в рамках чего, автор выделяет основные свойства данных субъектов. При этом, исходя из деления субъектов преступления в теории уголовного права на общие и специальные субъекты, впервые формулируется «Обобщённая интерпретация структуры субъектов коррупционных преступлений по законодательству Украины» путём деления возможных участников коррупционных отношений, соответственно, на группы общего и специального субъектов указанных преступлений. Группа общего субъекта коррупционного преступления охватывает всех лиц, которые способны считаться субъектами преступления в принципе. Группа специального субъекта коррупционного преступления составляет группу лиц, которой объединены следующие типы субъектов: публичное должностное (служебное) лицо; приравнённое к публичному должностному (служебному) лицу лицо; топ-менеджеры юридических лиц частного права и лица, оказывающие услуги; кандидаты на публичные выборные должности; отдельные категории физических лиц, выполняющих особую роль в жизни общества и государства.As it is known, the phenomenon of corruption, is characteristic of virtually all spheres of human activity. Therefore, it would be logical to assume that anti-corruption legislation will accordingly prohibit corruption acts for all entities that are capable to objectify the fact of the dominance of corruption in objective reality. This question is extremely relevant, taking into account the following fact: if there are groups of subjects that by their actions (or inaction) cause corruption, but they are not considered by the legislator as subjects of corruption crimes, accordingly, one can speak neither about the proper effectiveness of anti-corruption legislation, nor about the proper quality of anti-corruption activities. At the same time, analyzing the laws of various states, we can conclude that there is still no unified list of subjects of corruption crimes in the world, which, on the one hand, is associated with a different approach to understanding the phenomenon of corruption, and, on the other hand, makes it impossible to formulate a corresponding unified definition.In the article the author attempts to systematize an exhaustive list of subjects of corruption crimes under the current legislation of Ukraine. The corresponding systematization of the subjects of corruption crimes is preceded by an outline of the general idea of the subject of corruption crime in Ukraine, within which, the author identifies the main characteristics of these subjects. At the same time, based on the division of crime subjects in the theory of the criminal law into general and special ones, the “Generalized interpretation of the structure of subjects of corruption crimes under the legislation of Ukraine” is formulated for the first time by dividing possible participants of corruption relations, respectively, into groups of general and special subjects of these crimes. The group of general subjects of corruption offense covers all individuals, capable of being considered subjects of a crime in principle. The group of special subjects of corruption offense is a group of people, which includes the following types of subjects: a public official; a person, equivalent to a public official; top managers of legal entities of private law and individuals, providing services; candidates for public elective posts; separate categories of individuals, performing a special role in the life of society and state
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