207 research outputs found
The Developmental Stages of the Acquisition of Arabic By Adult English-speaking Learners: Processability Theory and the Formulaic Language
The aim of this study is to look at the developmental stages of the acquisition of Arabic as a foreign language by adult English learners. Processability theory (Pienemann, 1998, 2005) is adopted to investigate in detail whether the acquisition development will follow the hierarchy as stated by PT. The study targeted agreement within seven grammatical structures. The structures belong to three procedural levels of the hierarchy (stages three to five).
Six adult learners participated in this study. They were tested via different tasks to elicit data either to support the predictions of PT hierarchy, or to disconfirm it. Two participants produced subject â verb agreement (stage 4) at a higher rate than N-aAdj / N-N agreement (stage 3). Before disconfirming the Prediction of PT hierarchy, the two participants took a second test to make sure the language they produced is processed and not retrieved as a formula. Students were introduced to a set of new vocabulary and were asked to tell a story based on three picture stories. By learning unfamiliar vocabulary in isolation, the two participants applied grammatical relations to combine words together. Data in test 2 showed a decrease in the acquisition rate of S â V agreement. Therefore, confirming the predictions of PT
DE LA DIFFĂRENTIATION FRACTIONNAIRE DES SĂRIES ĂCONOMIQUES
Pour modĂ©liser les sĂ©ries Ă©conomiques et afin dâĂ©viter des corrĂ©lations fallacieuses, les chercheurs en Ă©conomie procĂšdent souvent Ă des diffĂ©rentiations, premiĂšre ou seconde selon lâordre dâintĂ©gration des sĂ©ries considĂ©rĂ©es, dans le but de les stationnariser. GĂ©nĂ©ralement, ils commencent par administer des tests de racine unitaire (ADF, KPSS ou autre) aux sĂ©ries. La plupart des sĂ©ries Ă©conomiques sont non stationnaires en niveau. Les sĂ©ries sont alors diffĂ©renciĂ©s en retranchant des valeurs On teste la stationnaritĂ© de la nouvelle sĂ©rie. Si elle sâavĂšre stationnaire, on travaille avec cette sĂ©rie des diffĂ©rences premiĂšres en lâintroduisant dans un modĂšle de rĂ©gression. Lorsque la sĂ©rie est stationnaire en niveau, ce qui est rare, on dit quâelle est intĂ©grĂ©e dâordre 0 et elle nĂ©cessite 0 diffĂ©rentiation pour lâintĂ©grer. Lorsquâelle nĂ©cessite une diffĂ©rentiation pour ĂȘtre stationnarisĂ©e, on dit quâelle est intĂ©grĂ©e dâordre 1. Lorsquâil faut une double diffĂ©rentiation pour ĂȘtre stationnarisĂ©e, la sĂ©rie est intĂ©grĂ©e dâordre 2, et ainsi de suite. En vĂ©ritĂ©, il est rare quâune sĂ©rie soit intĂ©grĂ©e dâun ordre entier, 0, 1, 2,... Le plus souvent, lâordre dâintĂ©gration des sĂ©ries Ă©conomiques est un nombre dĂ©cimal ou âfractionnaireâ, compris entre 0 et 1 ou entre 1 et 2... Ce papier portant sur la diffĂ©rentiation entiĂšre et fractionnaire des sĂ©ries chronologiques prĂ©sente, dans la section 2, la diffĂ©rentiation dâun ordre fractionnaire et, dans la section 3, lâapplication de cette diffĂ©rentiation aux sĂ©ries temporelles Ă©conomiques. Un algorithme de dĂ©termination de lâordre fractionnaire dâintĂ©gration des sĂ©ries avec son application Ă des sĂ©ries macroĂ©conomiques du Maroc est prĂ©sentĂ© dans la section 4. Dans la section 5, sont exposĂ©s les avantages de la diffĂ©rentiation fractionnaire des sĂ©ries par rapport Ă la diffĂ©rentiation entiĂšre souvent adoptĂ©e par les chercheurs
A finite volume scheme for a seawater intrusion model with cross-diffusion
International audienceWe consider a finite volume scheme for a seawater intrusion model. It is based on a two-point flux approximation with upwind mobilities. The scheme preserves at the discrete level the main features of the continuous problem: the non-negativity of the solutions, the decay of the energy and the control of the entropy and its dissipation. Moreover the scheme converges towards a weak solution to the problem. Numerical results are provided to illustrate the behavior of the model and of the scheme
Knowledge management in the Moroccan public sector, concepts and application: Tax office as a case in point
Knowledge is seen as an essential asset for public organizations. The loss of critical knowledge as a result of the increasing retirement of experienced human resources may pose a threat to the continuity of these organizations' operations, particularly since reforms in the public sector have transformed these entities into regulatory, evaluation, and control bodies.
Therefore, these organizations rely largely on the mastery of these skills to achieve their goals. This study aims to evaluate, within the context of the public sector, the significance and problems of knowledge and, more importantly, to build and propose a conceptual framework for knowledge continuity management (KM) in these organizations. This framework defines the key processes and elements that support the implementation of this process in order to ensure the continuity of knowledge following the departure of experienced personnel.
In this study, we tried to answer the question, "Does the General Directorate of Taxation have a knowledge management policy?â. We have thus circulated a poll to persons who now occupy or are pursuing leadership positions. The findings indicate consensus regarding the necessity of the knowledge management policy, especially in succession management, for guaranteeing the consistent delivery of public services. But they also illustrate the absence of a well-defined process of knowledge transfer, which leaves the field of activity in this regard wide open and demands a large intervention by the central services to better explain the concept to the various employees in charge of the management of human resources and the other services, as this process involves any person holding critical knowledge for the efficient operation of its service and for the installation of a knowledge management system.
Keywords: knowledge management, public sector, retirement, tax department.
JEL Classification : D80, L20, O15, 021.
Paper type: Empirical researchKnowledge is seen as an essential asset for public organizations. The loss of critical knowledge as a result of the increasing retirement of experienced human resources may pose a threat to the continuity of these organizations' operations, particularly since reforms in the public sector have transformed these entities into regulatory, evaluation, and control bodies.
Therefore, these organizations rely largely on the mastery of these skills to achieve their goals. This study aims to evaluate, within the context of the public sector, the significance and problems of knowledge and, more importantly, to build and propose a conceptual framework for knowledge continuity management (KM) in these organizations. This framework defines the key processes and elements that support the implementation of this process in order to ensure the continuity of knowledge following the departure of experienced personnel.
In this study, we tried to answer the question, "Does the General Directorate of Taxation have a knowledge management policy?â. We have thus circulated a poll to persons who now occupy or are pursuing leadership positions. The findings indicate consensus regarding the necessity of the knowledge management policy, especially in succession management, for guaranteeing the consistent delivery of public services. But they also illustrate the absence of a well-defined process of knowledge transfer, which leaves the field of activity in this regard wide open and demands a large intervention by the central services to better explain the concept to the various employees in charge of the management of human resources and the other services, as this process involves any person holding critical knowledge for the efficient operation of its service and for the installation of a knowledge management system.
Keywords: knowledge management, public sector, retirement, tax department.
JEL Classification : D80, L20, O15, 021.
Paper type: Empirical researc
A miniature microstrip patch antenna array with defected ground structure
The aim of this work is to miniaturize a microstrip patch antenna array resonating at 10 GHz. It presents an improved method of size reduction of a microstrip antenna array with circular polarisation using Defected Ground Structure (DGS) which is used to perform serious LC resonance property in certain frequency. By integrating Defected Ground Structure elements, the resonance frequency was shifted from 10 GHz to 7.5 GHz. The proposed structure of DGS is incorporated in the ground plane of our array antenna. Prototype of the antenna was fabricated with FR4 substrate and tested. The simulation and measurement results were in good agreement
Numerical analysis of a finite volume scheme for a seawater intrusion model with cross-diffusion in an unconfined aquifer
International audienceWe consider a degenerate parabolic system modeling the flow of fresh and saltwater in a porous medium in the context of seawater intrusion. We propose and analyze a finite volume scheme based on two-point flux approximation with upwind mobilities. The scheme preserves at the discrete level the main features of the continuous problem, namely the nonnegativity of the solutions, the decay of the energy and the control of the entropy and its dissipation. Based on these nonlinear stability results, we show that the scheme converges towards a weak solution to the problem. Numerical results are provided to illustrate the behavior of the model and of the scheme
A New Design of a Wideband Miniature Antenna Array
In this work, we present a new configuration of a new miniature microstrip antenna array having a wide frequency band and with a circular polarization. The bandwidth is about 2GHz for a reflection coefficient under -10dB and centered on the ISM âIndustrial Scientific Medicalâ band at 5.8 GHz. To design such array, we have started the design by validating one antenna element at 10 GHz and after that by using the technique of defected ground, we have validated the antenna array in the frequency band [4 GHz -6 GHz] which will permit to miniature the dimensions. The final fabricated antenna array is mounted on an FR4 substrate, the whole area is 102.48 X 31.39 mm2Â with a gain of 5dBi at 4GHz
La âEconomĂa Social y Solidariaâ entre la restauraciĂłn neoliberal y los gobiernos progresistas. AnĂĄlisis de las polĂticas pĂșblicas implementadas en Argentina y MĂ©xico en el siglo XXI
The sector of the "Social, Solidarity and/or Popular Economy" currently received an important revitalization and relevance both within academic research and state agendas, as well as in the rhetoric of a large part of social and political organizations. This is due to the rise and visibility acquired by the heterogeneous popular practices linked to the formation of "another economy", an alternative to neoliberalism and globalization, and to "new" forms of organization and social protest. These experiences gained the public scene and gravitated in the design and implementation of public policies aimed at promoting the "social and solidarity economy" on a Latin American scale.In a regional scenario marked by the oscillation of governments called "progressive" and neoliberal restorations, the analysis of different aspects of the historical context and its implications in the formulation of the different programs developed and their limitations in relation to the modalities of implementation and work proposals for the sector in Argentina and Mexico.; El sector de la EconomĂa Social, Solidaria y/o Popular cobrĂł actualmente una importante revitalizaciĂłn y relevancia tanto al interior de las investigaciones acadĂ©micas y de las agendas estatales, como en la retĂłrica de gran parte de las organizaciones sociales y polĂticas. Esto se debe al ascenso y visibilidad que adquirieron las heterogĂ©neas prĂĄcticas populares vinculadas a la conformaciĂłn de âotra economĂaâ, alternativa al neoliberalismo y la globalizaciĂłn, y a ânuevasâ formas de organizaciĂłn y protesta social. Estas experiencias ganaron la escena pĂșblica y gravitaron en el diseño e implementaciĂłn de polĂticas pĂșblicas orientada a la promociĂłn de la âeconomĂa social y solidariaâ a escala Latinoamericana. Asimismo, las formas organizativas y reivindicativas de estos sectores fueron reconfiguradas al calor de dichas polĂticas.En un escenario regional signado por la oscilaciĂłn de gobiernos denominados âprogresistasâ y restauraciones neoliberales se vuelve central el anĂĄlisis de sus implicancias para el sector de la EconomĂa Social y Solidaria y su compleja relaciĂłn con el Estado. En tal sentido, en el siguiente artĂculo nos interesa relevar las recientes transformaciones y tendencias en las polĂticas pĂșblicas destinadas al sector en Argentina y MĂ©xico
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