Dynamic encounters between asylum applicants and the multilingual society of Luxembourg - linguistic repertoires built with truncated competences?

Scientific Conference (2016, October 05)

Our contribution aims at investigating the communication challenges brought by a rather abrupt and recent change in Luxembourg’s refugee intake patterns, reflected in the increased number and shifted ... [more ▼]

Our contribution aims at investigating the communication challenges brought by a rather abrupt and recent change in Luxembourg’s refugee intake patterns, reflected in the increased number and shifted geographic origin of international protection applicants. We have adopted a border studies approach to explore the new linguistic and social reality, which emerges through continuous interactions between the diverse, mobile and multilingual society of Luxembourg, on one hand, and on the other hand, the linguistic and cultural repertoires that recently arrived asylum seekers – mostly Syrians, Iraqis and Afghanis – bring to this context. We argue that theoretical and applied knowledge generated by previous research on multilingualism in cross-border regions is transferable to this new field of inquiry. [less ▲]

Dynamic facial expression generation on hilbert hypersphere with conditional wasserstein generative adversarial nets

in IEEE Transactions on Pattern Analysis and Machine Intelligence (2020)

In this work, we propose a novel approach for generating videos of the six basic facial expressions given a neutral face image. We propose to exploit the face geometry by modeling the facial landmarks ... [more ▼]

In this work, we propose a novel approach for generating videos of the six basic facial expressions given a neutral face image. We propose to exploit the face geometry by modeling the facial landmarks motion as curves encoded as points on a hypersphere. By proposing a conditional version of manifold-valued Wasserstein generative adversarial network (GAN) for motion generation on the hypersphere, we learn the distribution of facial expression dynamics of different classes, from which we synthesize new facial expression motions. The resulting motions can be transformed to sequences of landmarks and then to images sequences by editing the texture information using another conditional Generative Adversarial Network. To the best of our knowledge, this is the first work that explores manifold-valued representations with GAN to address the problem of dynamic facial expression generation. We evaluate our proposed approach both quantitatively and qualitatively on two public datasets; Oulu-CASIA and MUG Facial Expression. Our experimental results demonstrate the effectiveness of our approach in generating realistic videos with continuous motion, realistic appearance and identity preservation. We also show the efficiency of our framework for dynamic facial expression generation, dynamic facial expression transfer and data augmentation for training improved emotion recognition models. [less ▲]

Dynamic Hedging and Extreme Asset Co-movements

E-print/Working paper (2014)

Dynamic Hedging for the Real Option Management of Hydropower Storage Operations with Exchange Rate Risks

E-print/Working paper (2021)

Dynamic insights on transcription initiation and RNA processing during bacterial adaptation

in RNA (2020)

Transcription initiation and RNA processing govern gene expression and enable bacterial adaptation by reshaping the RNA landscape. The aim of this study was to simultaneously observe these two fundamental ... [more ▼]

Transcription initiation and RNA processing govern gene expression and enable bacterial adaptation by reshaping the RNA landscape. The aim of this study was to simultaneously observe these two fundamental processes in a transcriptome responding to an environmental signal. A controlled σE system in E. coli was coupled to our previously-described tagRNA-seq method to yield process kinetics information. Changes in transcription initiation frequencies (TIF) and RNA processing frequencies (PF) were followed using 5’ RNA tags. Changes in TIF showed a binary increased/decreased pattern that alternated between transcriptionally activated and repressed promoters, providing the bacterial population with transcriptional oscillation. PF variation fell into three categories of cleavage activity; i) constant and independent of RNA levels, ii) increased once RNA has accumulated, and iii) positively correlated to changes in TIF. This work provides a comprehensive and dynamic view of major events leading to transcriptomic reshaping during bacterial adaptation. It unveils an interplay between transcription initiation and the activity of specific RNA cleavage sites. This study utilized a well-known genetic system to analyze fundamental processes, and can serve as blueprint for comprehensive studies that exploit the RNA metabolism to decipher and understand bacterial gene expression control. [less ▲]

Dynamic interplay of language policy, beliefs and pedagogy in a nursery class in Luxembourg

in Language and Education (2018), 32(5), 444-461

This presentation focuses on the relationship between the language policy, language ideologies and language practices in a nursery class in trilingual Luxembourg. Individual multilingualism is an ... [more ▼]

This presentation focuses on the relationship between the language policy, language ideologies and language practices in a nursery class in trilingual Luxembourg. Individual multilingualism is an educational goal in Luxembourg, a small country in central Europe, and, thus, children learn Luxembourgish from the compulsory nursery school, become literate in German in Year 1 and learn oral and written French from Year 2 and Year 3, respectively. Currently, 62.4% of the children do not speak Luxembourgish on school entry (MENJE 2016). Many speak Portuguese, French or a language of the Balkans. As a result, educational policies focus on the teaching of Luxembourgish from preschool, sometimes at the expense of other languages. Gretsch and Kirsch (2015) developed the app iTEO in order to promote innovative teaching methods that capitalize on the children’s diverse language resources and that promote a dynamic view of bilingualism. This ipad app, which allows for the recording and editing of oral speech, was designed with social-constructivist theories and Bakhtin’s theory of dialogism in mind. This case-study presents the ways in which a preschool teacher’s ideological beliefs influence a child’s language use over a period of two years leading to the child’s understanding of the legitimacy of translanguaging. The focus lies on the interplay between the educational policy focusing on the teaching of Luxembourgish, the teacher’s language ideologies rooted in her multilingual identity and in societal multilingualism, and the child’s experiences of separating languages at home (Kirsch, 2014). The data stem from a qualitative, longitudinal study using a multi-method approach. The study shows that dialogue between teachers, parents, children, policy-makers and researchers can contribute to shifting ideologies and to opening up dynamic languaging spaces. [less ▲]

Dynamic many-valued logics for searching games with errors

Scientific Conference (2013)

Dynamic MixVoIP

Scientific Conference (2013, July)

Dynamic optimization based on incoming load analysis and prediction is considered to be an innovative approach in order to prevent the overload of the servers in a Voice over IP system. The ongoing ... [more ▼]

Dynamic optimization based on incoming load analysis and prediction is considered to be an innovative approach in order to prevent the overload of the servers in a Voice over IP system. The ongoing project is in an early stage of study and the followings are the current vision and concept regarding it. The information gathered by inspecting the real system of an IT company, MixVoIP, (probe server and sensors spread inside the cloud) and by analyzing the data provided by the predictive algorithm, will be used to optimize load distribution and resource allocation. The implementation in the real-life environment should lead to an improvement of the service offered but also to a sensible reduction of the associated carbon emissions, e.g. as a result of an improved load management, reduced idle CPU times or optimally exploited resources. [less ▲]

Dynamic modeling of VISSIM critical gap parameter at unsignalized intersections

Poster (2013)

Dynamic modelling of ground antennas

Doctoral thesis (2011)