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See detailSpécificité et permanence des effets de cohorte. Le modèle APCD appliqué aux inégalités de générations, France/États-Unis, 1985-2010
Chauvel, Louis UL

in Revue Française de Sociologie (2013), 54(4), 665-705

By returning to the theoretical sources of the generational question, the importance of two central concepts, specificity and consistency of cohort effects, is emphasized and gives rise to a new APCD ... [more ▼]

By returning to the theoretical sources of the generational question, the importance of two central concepts, specificity and consistency of cohort effects, is emphasized and gives rise to a new APCD model and a hysteresis test designed to identify long-term cohort effects : a scarring effect, or cohortal scar. A Franco-American comparison of living standards is developed by using cohort data from 1985 to 2010 from the Luxembourg income study (LIS) and Statistics on income and living conditions – Eurostat (EU-SILC). In France, net generational inequalities (taking account of demographic and educational contexts, in particular) are of the same magnitude as the inequalities linked to immigrant status ; the beneficiaries being cohorts born around the year 1950. This phenomenon is not declining in intensity with time. The dynamic within the USA is its antithesis, which can be explained by differences in French and American welfare regimes. France is thus marked by deep intergenerational inequalities. [less ▲]

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See detailSpecificity and Consistency of Cohort Effects: The APCD Model Applied to Generational Inequalities, France-United States, 1985-2010
Chauvel, Louis UL

in Revue Française de Sociologie (2013), 54(4), 663-703

By returning to the theoretical sources of the generational question, the importance of two central concepts, specificity and consistency of cohort effects, is emphasized and gives rise to a new APC-D ... [more ▼]

By returning to the theoretical sources of the generational question, the importance of two central concepts, specificity and consistency of cohort effects, is emphasized and gives rise to a new APC-D model and a hysteresis test designed to identify long-term cohort effects: a scarring effect, or cohortal scar. A Franco-American comparison of living standards is developed by using cohort data from 1985 to 2010 from the Luxembourg Income Study (LIS) and Statistics on Income and Living Conditions–Eurostat (EU-SILC). In France, net generational inequalities (taking account of demographic and educational contexts, in particular) are of the same magnitude as the inequalities linked to immigrant status; the beneficiaries being cohorts born around the year 1950. This phenomenon is not declining in intensity with time. The dynamic within the USA is its antithesis, which can be explained by differences in French and American welfare regimes. France is thus marked by deep intergenerational inequalities. [less ▲]

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See detailSpecifying Structural Properties and Their Constraints Formally, Visually and Modularly Using VCL
Amalio, Nuno UL; Kelsen, Pierre UL; Ma, Qin UL

in 15th International Conference, EMMSAD 2010 (2010)

The value of visual representations in software engineering is widely recognised. This paper addresses the problem of formality and rigour in visual-based descriptions of software systems. It proposes a ... [more ▼]

The value of visual representations in software engineering is widely recognised. This paper addresses the problem of formality and rigour in visual-based descriptions of software systems. It proposes a new language, VCL, designed to be visual, formal and modular, targeting abstract specification at level of requirements, and that aims at expressing visually what is not visually expressible using mainstream visual languages, such as UML. This paper presents and illustrates VCL's approach to structural modelling based on the VCL notations of structural and constraint diagrams with a case study. VCL's contributions lie in its modularity mechanisms, and the support for two alternative styles of visual constraint modelling (one closer to set theory expressions and based on Euler diagrams, the other closer to predicate calculus and based on object graphs). [less ▲]

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See detailSpecifying structural properties and their constraints formally, visually and modularly using VCL
Amalio, Nuno UL; Kelsen, Pierre UL; Ma, Qin UL

in EMMSAD 2010 (2010)

The value of visual representations in software engineering is widely recognised. This paper addresses the problem of formality and rigour in visual-based descriptions of software systems. It proposes a ... [more ▼]

The value of visual representations in software engineering is widely recognised. This paper addresses the problem of formality and rigour in visual-based descriptions of software systems. It proposes a new language, VCL, designed to be visual, formal and modular, targeting abstract specification at level of requirements, and that aims at expressing visually what is not visually expressible using mainstream visual languages, such as UML. This paper presents and illustrates VCL's approach to structural modelling based on the VCL notations of structural and constraint diagrams with a case study. VCL's contributions lie in its modularity mechanisms, and the support for two alternative styles of visual constraint modelling (one closer to set theory expressions and based on Euler diagrams, the other closer to predicate calculus and based on object graphs). [less ▲]

Detailed reference viewed: 95 (2 UL)
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See detailLe spectacle automobile à Reims
Moreau, Sebastien UL

Scientific Conference (2015, May 06)

Detailed reference viewed: 22 (1 UL)
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See detailUn spectacle son et lumières pour Paul Eyschen?
Scuto, Denis UL

Article for general public (2017)

Detailed reference viewed: 55 (5 UL)
See detailLe spectateur audiovisuel comme sujet expérimental
Tore, Gian Maria UL

in Groulier, Cédric; Lévy, Clément; Tore, Gian Maria (Eds.) Regards croisés sur l’expérience (2006)

Detailed reference viewed: 43 (2 UL)
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See detailSpectral characterization of the quadratic variation of mixed Brownian–fractional Brownian motion
Azmoodeh, Ehsan UL; Valkeila, Esko

in Statistical Inference for Stochastic Processes (2013), 16(2), 97-112

Dzhaparidze and Spreij (Stoch Process Appl, 54:165–174, 1994) showed that the quadratic variation of a semimartingale can be approximated using a randomized periodogram. We show that the same ... [more ▼]

Dzhaparidze and Spreij (Stoch Process Appl, 54:165–174, 1994) showed that the quadratic variation of a semimartingale can be approximated using a randomized periodogram. We show that the same approximation is valid for a special class of continuous stochastic processes. This class contains both semimartingales and non-semimartingales. The motivation comes partially from the recent work by Bender et al. (Finance Stoch, 12:441–468, 2008), where it is shown that the quadratic variation of the log-returns determines the hedging strategy. [less ▲]

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See detailSpectral coexistence for next generation wireless backhaul networks
Sharma, Shree Krishna; Lagunas, Eva UL; Tsinos, Christos UL et al

in Access, Fronthaul and Backhaul Networks for 5G and Beyond (2017)

Detailed reference viewed: 111 (3 UL)
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See detailSpectral Efficiency of Variable Density Cellular System
Chatzinotas, Symeon UL; Imran, M. A.; Tzaras, C.

in PIMRC 2008 (2008)

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See detailSpectral efficient compressive transmission framework for wireless communication systems
Sharma, Shree Krishna UL; Patwary, Mohammad; Abdel-Maguid, Mohamed

in IET Signal Processing (2013)

Increasing demand of high-speed data rate is leading to a challenging task to provide services to the users within exponentially growing market for wireless multimedia services. Subsequently, the ... [more ▼]

Increasing demand of high-speed data rate is leading to a challenging task to provide services to the users within exponentially growing market for wireless multimedia services. Subsequently, the available radio resources are becoming scarce because of different factors such as spectrum segmentation and dedicated frequency allocation to existing wireless standards. Exploring new techniques for enhancing the spectral efficiency in wireless communication has been an important research challenge. In this study, the enhancement of spectral efficiency of wireless communication systems is considered. A framework is proposed to implement the concept of compressive sampling (CS) for compressing the natural random signals. The performance of proposed framework is evaluated in the context of multiple input multiple output orthogonal frequency division multiplexing system. Simulation-based results show that 25% of resources can be saved by marginal trade-off with the quality of service (QoS) requirement applying CS to the natural random signals. Furthermore, it can be claimed that this QoS trade-off can be optimised with dynamic selection of random measurement matrices. [less ▲]

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See detailSpectral Feature Detection with sub-Nyquist Sampling for Wideband Spectrum Sensing
Lagunas, Eva UL; Nájar, Montse

in IEEE Transactions on Wireless Communications (2015)

Detailed reference viewed: 149 (7 UL)
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See detailSpectral gap on Riemannian path space over static and evolving manifolds
Cheng, Li Juan UL; Thalmaier, Anton UL

in Journal of Functional Analysis (2018), 274(4), 959-984

In this article, we continue the discussion of Fang–Wu (2015) to estimate the spectral gap of the Ornstein–Uhlenbeck operator on path space over a Riemannian manifold of pinched Ricci curvature. Along ... [more ▼]

In this article, we continue the discussion of Fang–Wu (2015) to estimate the spectral gap of the Ornstein–Uhlenbeck operator on path space over a Riemannian manifold of pinched Ricci curvature. Along with explicit estimates we study the short-time asymptotics of the spectral gap. The results are then extended to the path space of Riemannian manifolds evolving under a geometric flow. Our paper is strongly motivated by Naber’s recent work (2015) on characterizing bounded Ricci curvature through stochastic analysis on path space. [less ▲]

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See detailSpectral Models for Orthonormal Wavelets and Multiresolution Analysis of L2(R)
Gómez-Cubillo, Fernando; Suchanecki, Zdzislaw UL

in Journal of Fourier Analysis and Applications (2011), 17(2), 191-225

Spectral representations of the dilation and translation operators on L2(R) are built through appropriate bases. Orthonormal wavelets and multiresolution analysis are then described in terms of rigid ... [more ▼]

Spectral representations of the dilation and translation operators on L2(R) are built through appropriate bases. Orthonormal wavelets and multiresolution analysis are then described in terms of rigid operator-valued functions defined on the functional spectral spaces. The approach is useful for computational purposes. [less ▲]

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See detailSpectral models for orthonormal wavelets and related algorithms
Gómez-Cubillo, Fernando; Suchanecki, Zdzislaw UL; Villullas, S.

in Journal of Physics: Conference Series (2014), 490

This work presents new methods for constructing orthonormal wavelets from certain families of Hardy functions. Inner functions and the corresponding backward shift invariant subspaces are in the core of ... [more ▼]

This work presents new methods for constructing orthonormal wavelets from certain families of Hardy functions. Inner functions and the corresponding backward shift invariant subspaces are in the core of the structure of these families. The new algorithms focus on the local shape of the wavelets, a property making them especially useful for pattern recognition. [less ▲]

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See detailSpectral Sequence Motif Discovery
Colombo, Nicolo UL; Vlassis, Nikos UL

E-print/Working paper (2014)

Sequence discovery tools play a central role in several fields of computational biology. In the framework of Transcription Factor binding studies, motif finding algorithms of increasingly high performance ... [more ▼]

Sequence discovery tools play a central role in several fields of computational biology. In the framework of Transcription Factor binding studies, motif finding algorithms of increasingly high performance are required to process the big datasets produced by new high-throughput sequencing technologies. Most existing algorithms are computationally demanding and often cannot support the large size of new experimental data. We present a new motif discovery algorithm that is built on a recent machine learning technique, referred to as Method of Moments. Based on spectral decompositions, this method is robust under model misspecification and is not prone to locally optimal solutions. We obtain an algorithm that is extremely fast and designed for the analysis of big sequencing data. In a few minutes, we can process datasets of hundreds of thousand sequences and extract motif profiles that match those computed by various state-of-the-art algorithms. [less ▲]

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See detailSpectral synthesis for flat orbits in the dual space of weighted group algebras of nilpotent Lie groups
Ludwig, Jean; Molitor-Braun, Carine UL; Poguntke, Detlev

in Transactions of the American Mathematical Society (2013), 365(8), 4433-4473

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See detailSpectral synthesis in $L^2(G)$
Ludwig, Jean; Molitor-Braun, Carine UL; Pusti, Sanjoy UL

in Preprint (n.d.)

For locally compact, second countable, type I groups $G$, we characterize all closed (two-sided) translation invariant subspaces of $L^2(G)$. We establish a similar result for $K$-biinvariant $L^2 ... [more ▼]

For locally compact, second countable, type I groups $G$, we characterize all closed (two-sided) translation invariant subspaces of $L^2(G)$. We establish a similar result for $K$-biinvariant $L^2$-functions ($K$ a fixed maximal compact subgroup) in the context of semisimple Lie groups. [less ▲]

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See detailSpectral synthesis in L2(G)
Molitor-Braun, Carine UL; Ludwig, Jean; Pusti, Sanjoy UL

in Colloquium Mathematicum (2015), 138(1), 89104

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See detailSpectral-Efficient Model for Multiuser Massive MIMO: Exploiting User Velocity
Vu, Thang Xuan UL; Trinh, Anh Vu; Chatzinotas, Symeon UL et al

in IEEE international Conference on Communications (2017, May)

Detailed reference viewed: 112 (3 UL)