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An Aspect-Oriented Approach for Use Case Based Modeling of Software Product Lines

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Journal of Software Engineering and Applications 2009年第4期2卷 248-258页

作者： stéphane S. SOMé Pauline ANTHONYSAMY 不详

Software Product Line Development advocates software reuse by modeling common and variable artefacts separately across members of a family of products. Aspect-Oriented Software Development aims at separation of concerns with “aspects” to increase modularity, reusability, maintainability and ease of evolution. In this paper, we apply an as-pect-oriented use case modeling approach to product line system modeling. A use case specification captures stake-holders concerns as interactions between a system and its actors. We adapt our previous work with the introduction of a “variability” relationship for the expression of variabilities. This relationship is used to model variable and common behaviours across a family of products as use cases. A variability composition mechanism enables building of executa-ble behaviour models for each member of a product line family by integrating common elements with the applicable variable elements.

关键词： Product Lines Use Cases Aspects Requirements Modeling

A Process study of the Tidal Circulation in the Persian Gulf

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Open Journal of Marine Science 2012年第4期2卷 131-140页

作者： stéphane Pous Xavier Carton Pascal Lazure DYNECO IFREMER Brest France LOCEAN/IPSL Université Pierre et Marie Curie Paris France LPO/IUEM Université de Bretagne Occidentale Brest France

A homogeneous shallow-water model with free surface is used to model the tidal circulation in the Persian Gulf. The numerical finite-difference model includes harmonic diffusion of horizontal momentum and quadratic bottom friction, it has a 9 km mesh size and it is forced by 7 tidal components at its southern boundary. High precision bathymetric data are used to obtain the bottom topography. The numerical model is run for more than a year. The results are the following: 1) The model accurately reproduces the tidal phase and amplitude observed at 42 tidal gauges in the region. This accuracy is attributed to the presence of the 7 components which are able to interact nonlinearly;2) The amphidromic points are also well positioned by the model due to a proper choice of bathymetry. This was checked also with a simpler geometry of the domain;3) The tidal currents can be strong in the straits of Hormuz and in shallow areas;thus they will have an effect of the hydrology of the region. The residual currents are weak so that they will be negligible for the large-scale circulation on long periods;4) Finally, the sea-surface elevation forecast by the model is in close agreement with in-situ measurements of pressure in the straits, performed during the GOGP99 experiment.

关键词： Persian Gulf Barotropic Tide Hydrodynamical Modeling Comparison with Data

An Algorithm to compute damage from load in composites

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Frontiers of structural and Civil Engineering 2011年第2期5卷 180-193页

作者： Cyrille F.DUNANT stéphane P.A.BORDAS Pierre KERFRIDEN Karen L.SCRIVENER Timon RABCZUK University of Toronto Department of civil engineeringGalbraith buildingToronto M5S 1A4Canada Laboratory of Construction Materials EPFLLausanneSwitzerland Institute of structural Mechanics Chair of Computational MechanicsBauhaus University WeimarWeimar 99423Germany

We present a new method to model fracture of concrete based on energy *** concrete is considered on the mesoscale as composite consisting of cement paste,aggregates and micro *** this first step,the alkali-silica reaction is taken into account through damage mechanics though the process is more complex involving thermo-hygro-chemo-mechanical *** use a non-local damage model that ensures the wellposedness of the boundary value problem(BVP).In contrast to existing methods,the interactions between degrees of freedom evolve with the damage *** results are compared to analytical and experimental results and show good agreement.

关键词： Concrete damage prediction modelling energy minimisation ASR

Predictive factors of survival in patients treated with definitive chemoradiotherapy for squamous cell esophageal carcinoma

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World Journal of Gastroenterology 2006年第26期12卷 4185-4190页

作者： Frédéric Di Fiore stéphane Lecleire Olivier Rigal Marie-Pierre Galais Emmanuel Ben Soussan Isabelle David Bernard Paillot Jacques-Henri Jacob Pierre Michel Digestive Oncology Unit Hepatogastroenterology Department Rouen University HospitalFrance Digestive Oncology unit Francois Baclesse Centre CaenFrance Radiotherapy Department Henri Becquerel Centre RouenFrance

AIM： The aim of the study was to evaluate the predictive factors of survival in patients with locally advanced squamous cell esophageal carcinoma （LASCOC） treated with definitive chemoradiotherapy （CRT） regimen based on the 5FU/CDDP combination. METHODS： All patients with LASCOC treated with a definitive CRT using the 5FU/CDDP combination between 1994 and 2000 were retrospectively included. Clinical complete response （CCR） to CRT was assessed by esophageal endoscopy and C-F-scan 2 mo after CRT completion. Prognostic factors of survival were assessed using univariate and multivariate analysis by the Cox regression model. RESULTS： A total of 116 patients were included in the study. A CCR to CRT was observed in 86/116 （74.1%）. The median survival was 20 mo （range 2-114） and the 5-year survival was 9.4%. Median survival of responder patients to CRT was 25 mo （range 3-114） as compared to 9 mo （range 2-81） in non-responder patients （P 〈 0.001）. In univariate analysis, survival was associated with CCR （P 〈 0.001）, WHO performance status 〈 2 （P = 0.01）, tumour length 〈 6 cm （P = 0.045） and weight loss 〈 10% was in limit of significance （P = 0.053）. In multivariate analysis, survival was dependant to CCR （P 〈 0.0001）, weight loss 〈 10% （P = 0.034） and WHO performance 〈 2 （P = 0.046）. CONCLUSION： Our results suggest that survival in patients with LASCOC b＇eated with definitive CRT was correlated to CCR, weight loss and WHO performance status.

关键词： Definitive chemoradiotherapy Esophageal squamous cell carcinoma Predictive factors

Three-dimensional modelling of shear keys in concrete gravity dams using an advanced grillage method

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Water Science and Engineering 2020年第3期13卷 223-232页

作者： Mahdi Ben Ftima steephane Lafrance Pierre Leeger Polytechnique Montreal Montreal University CampusMontrealH3C 3A7Canada

Contraction joint shear keys are resilient features of gravity dams that can be considered to increase the sliding safety factors or minimise seismic residual sliding displacements,allowing costly remedial actions to be *** paper presents a novel,robust,and computationally efficient three-dimensional(3D)modelling and simulation strategy of gravity dams,using a series of adjacent cantilever beam elements to represent individual *** monoliths are interconnected in the longitudinal direction by 3D no-tension link elements representing the lumped shear key stiffness contributions at a particular *** objective is to assess the shear key internal force demands,including the axial force,shear,and moment *** key demand-capacity ratios can then be assessed with related multi-axial failure *** 3D link element stiffness coefficients were derived from a series of 3D finite element(FE)solid models with a detailed representation of geometrical features of multiple shear *** results from the proposed method based on advanced grillage analysis show strong agreement with reference solutions from 3D FE solid models,demonstrating high accuracy and performance of the proposed *** application of the proposed advanced grillage method to a dam model with two monoliths clearly shows the advantage of the proposed method,in comparison to the classical approach used in practise.

关键词： Gravity dam Shear keys Seismic analysis Grillage analysis Finite element model Multi-scale approach

Reduction of False Rejection in an Authentication System by Fingerprint with Deep Neural Networks

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Journal of Software Engineering and Applications 2020年第1期13卷 1-13页

作者： stéphane Kouamo Claude Tangha Olaf Kouamo Department of Computer Science University of Yaounde I Yaounde Cameroon Department of Mathematics and statistics Université Denis Didérot (Paris VII) Paris France

Faultless authentication of individuals by fingerprints results in high false rejections rate for rigorously built systems. Indeed, the authors prefer that the system erroneously reject a pattern when it does not meet a number of predetermined correspondence criteria. In this work, after discussing existing techniques, we propose a new algorithm to reduce the false rejection rate during the authentication-using fingerprint. This algorithm extracts the minutiae of the fingerprint with their relative orientations and classifies them according to the different classes already established;then, make the correspondence between two templates by simple probabilities calculations from a deep neural network. The merging of these operations provides very promising results both on the NIst4 international data reference and on the SOCFing database.

关键词： Authentication Fingerprint False Rejection Neural Networks Pattern Recognition Deep Learning

Towards Optimizing a Personal Cooling Garment for Hot and Humid Deep Mining Conditions

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Open Journal of Optimization 2016年第1期5卷 35-43页

作者： Chady Al Sayed Ludwig Vinches stéphane Hallé Department of Mechanical Engineering école de Technologie Supérieure Montréal Canada

Workers exposed to hot and humid conditions suffer from heat stress that affects their concentration and can potentially lead to an increase in workplace accidents. To minimize heat stress, protective equipment may be worn, such as personal cooling garments. This paper presents and discusses the performances, advantages and disadvantages of existing personal cooling garments, namely air-cooled, liquid-cooled, phase change, hybrid, gas expansion and vacuum desiccant cooling garments, and a thermoelectric cooling technology. The main objective is to identify the cooling technique that would be most suitable for deep mining workers. It appears that no cooling technology currently on the market is perfectly compatible with this type of mining environment. However, combining two or more cooling technologies into a single hybrid system could be the solution to an optimized cooling garment for deep mines.

关键词： Personal Cooling Garment Heat stress Thermal Efficiency Deep Mines

Unsteady Cavitation Analysis Using Phase Averaging and Conditional Approaches in a 2D Venturi Flow

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Open Journal of Fluid Dynamics 2013年第3期3卷 171-183页

作者： Vincent Aeschlimann stéphane Barre Henda Djeridi LAMH Université Laval Quebec Canada LEGI UMR 5519 Grenoble France LPO UMR 6523 Brest France

The present study refers to a cavitating Venturi type section geometry characterized by a convergent angle of 18°?and a divergent angle of about 8°?where the sheet cavity presents typical self-oscillation behavior with quasi-periodic vapor clouds shedding. This work is an extension of previous works concerning void ratio measurements and velocity fields using double optical probe and constitutes a complete analysis of the two-phase structure of unsteady cavitating flow. This paper provides a new method based on conditional and phase averaging technique with wall pressure signal to treat experimental data in order to evaluate more precisely time-averaged and rms values of the void ratio and instantaneous velocity fields. Conditional analysis shows a different behavior of the two-phase flow dynamics leading to highlight high void ratio events linked to the break-off cycle. Unsteady phase averaging of the optical probe signal gives the evolution of the void ratio at each studied location in the venturi and shows that the fluctuations close to the wall (where the re-entrant jet is predominant) are in phase with the upper part of the cavity instead of the thickness of the cavity which is unchanged.

关键词： Unsteady Cavitation Sheet Cavity Optical Probes Venturi-Type Flow Turbo Pump

Effects of Saccharomycesboulardiion fecal short-chain fatty acids and microflora in patients on long-term total enteral nutrition

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World Journal of Gastroenterology 2005年第39期11卷 6165-6169页

作者： stéphane M Schneider Fernand Girard-Pipau Jér(o|^)me Filippi Xavier Hébuterne Dominique Moyse Gustavo Calle Hinojosa Anne Pompei Patrick Rampal Department of Hepato-Gastroenterology and Clinical Nutrition Archet University Hospital NiceFrance Bacteriology Laboratory Archet University Hospital NiceFrance Biostatistician Paris France Department of Hepato-Gastroenterology Princess Grace Hospital Monte-CarloMonaco

AIM： To assess the effects of Sb on fecal flora and shortchain fatty acids （SCFA） in patients on long-term TEN. METHODS： Ten patients （3 females, 7 males, 59±5.5 years）, on TEN for a median of 13 mo （1-125）, and 15 healthy volunteers （4 females, 11 males, 32±2.0 years） received Sb （0.5 g bid PO） for 6 d. Two stool samples were taken before, on the last 2 d and 9-10 d after treatment, for SCFA measurement and for culture and bacterial identification. Values （mean4-SE） were compared using sign tests and ANOVA. RESULTS： Fecal butyrate levels were lower in patients （10.1±2.9 mmol/kg） than in controls （19.2±3.9, P= 0.02）. Treatment with Sb increased total fecal SCFA levels in patients （150.2＋27.2 vs 107.5±18.2 mmol/kg, P= 0.02） but not in controls （129.0±28.6 vs 113.0±15.2 mmol/kg, NS）. At the end of treatment with Sb, patients had higher fecal butyrate（16.0±4.4 vs 10.1 [2.9] mmol/kg, P= 0.004）. Total SCFAs remained high 9 d after treatment was discontinued. Before the treatment, the anaerobe to aerobe ratio was lower in patients compared to controls （2.4±2.3 vs 69.8±1.8, P= 0.003）. There were no significant changes in the fecal flora of TEN patients. CONCLUSION： Sb-induced increase of fecal SCFA concentrations （especially butyrate） may explain the preventive effects of this yeast on TEN-induced diarrhea.

关键词： Enteral nutrition Diarrhea Saccharomyces boulardii Short-chain fatty acids Intestinal microbiota