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See detailBlockchain Governance: An Overview and Prediction of Optimal Strategies Using Nash Equilibrium
Khan, Nida UL; Ahmad, Tabrez; Patel, Anass et al

in 3rd AUE International Research Conference (in press)

Blockchain governance is a subject of ongoing research and an interdisciplinary view of blockchain governance is vital to aid in further research for establishing a formal governance framework for this ... [more ▼]

Blockchain governance is a subject of ongoing research and an interdisciplinary view of blockchain governance is vital to aid in further research for establishing a formal governance framework for this nascent technology. In this paper, the position of blockchain governance within the hierarchy of Institutional governance is discussed. Blockchain governance is analyzed from the perspective of IT governance using Nash equilibrium to predict the outcome of different governance decisions. A payoff matrix for blockchain governance is created and simulation of different strategy profiles is accomplished for computation of all Nash equilibria. The paper also creates payoff matrices for different kinds of blockchain governance to derive mathematical formulae usable to predict the best governance strategy that minimizes the occurrence of a hard fork as well as predicts the behavior of the majority during protocol updates. [less ▲]

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See detailPolitical Food Communication. Contrasting Food Governance Claims via Labelling Schemes and priorities of private and professional consumers
Reckinger, Rachel UL; Kapgen, Diane UL; Korjonen, Maria Helena UL

in Godeman, Jasmin; Bartelmeß (Eds.) Handbuch Ernährungskommunikation. Interdisziplinäre Perspektiven im Kontext von Nachhaltigkeit (in press)

Political food communication may take many forms, including direct recommendations to public institutions and private households (cf. Reckinger/Régnier 2017), or more indirect labelling schemes that ... [more ▼]

Political food communication may take many forms, including direct recommendations to public institutions and private households (cf. Reckinger/Régnier 2017), or more indirect labelling schemes that certify various types of quality – from sustainable via nutritious to ethical. The underlying governance claims differ in those cases: in the first one, priority is given to analytical, top-down information to procurement actors and to individuals of a given population; in the second one, action is rather taken in the direction of food production and transformation, be it top-down or participatory, with an associated effort to make the communicated guarantees transparent to consumers. In this article, we will analyse in a praxeological perspective the contrasting governance claims that structure a selection of labelling schemes in contemporary Luxembourg: official ones (such as organic produce, among others), voluntary and regional ones, international ones, as well as supermarket brands blurring boundaries and using overlaps of several labels. We will compare the guarantees and transparency that labels tend to offer in the socio-ecological, socioeconomic, sociocultural and socio-political dimensions of food certification, viewed as a potentially enabling or disabling form of food communication. At the same time, we will examine the potential of these aids for individual consumers’ priorities and public procurement actors’ legal framework in selecting foodstuffs with added sustainable or ethical value, asking the question if such certifications are efficient tools of food communication and ultimately of an enhanced food literacy in an arena of potentially conflicting and crowded messages. [less ▲]

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See detailDeveloping multilingual practices in early childhood education through a professional development in Luxembourg
Kirsch, Claudine UL; Aleksic, Gabrijela UL; Mortini, Simone UL et al

in International Multilingualism Research Journal (in press)

This paper investigates seven early education practitioners’ attitudes towards multilingual activities and translanguaging as well as their actual practices in Luxembourg. They took part in a professional ... [more ▼]

This paper investigates seven early education practitioners’ attitudes towards multilingual activities and translanguaging as well as their actual practices in Luxembourg. They took part in a professional development comprising a course, coaching, and regular meetings to deepen their understanding of multilingualism and language learning, and enable them to implement activities in multiple languages. The findings, drawn from questionnaires, observations, and interviews, show that all practitioners opened up towards multilingual activities and translanguaging, increased activities in such languages, and translanguaged frequently. The practitioners analyzed their beliefs and practices, connected theory and practice, constructed new knowledge, developed positive attitudes and changed their practice. This study is the first one to investigate the attitudes and practices of professionals in formal and non-formal education settings as well as the effect of professional development in Luxembourg. It also addresses the research gap regarding professional development on multilingualism in early childhood. [less ▲]

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See detailYoung children’s language-based agency in multilingual contexts in Luxembourg and Israel
Schwartz, Mila; Kirsch, Claudine UL; Mortini, Simone

in Applied Linguistic Review (in press)

Drawing on two longitudinal case-studies, this study aimed to identify some salient characteristics of the agentic behaviour of two young emergent multilinguals in two different multilingual contexts ... [more ▼]

Drawing on two longitudinal case-studies, this study aimed to identify some salient characteristics of the agentic behaviour of two young emergent multilinguals in two different multilingual contexts: Luxembourg and Israel. Despite the fact that the studies were conducted independently, the two cases were analysed together owing to the similarities in the research methods such as video-recorded observations, and semi-structured interviews with teachers and parents. The data were analysed through thematic and conversational analyses. Findings showed that a boy who learned Luxembourgish in Luxembourg and a girl who learned Hebrew in Israel, were outgoing and active learners who influenced their learning environment. We identified ten types of agentic behaviour, including engaging in repetition after peers and the teacher, creatively producing language, translanguaging, and self-monitoring. Despite differences of the children's sociocultural and linguistic backgrounds, and the language policies of their educational settings, we found a striking overlap in their language-based agentic behaviours. We suggest that the identified types can encourage further research in this field. Although our study with talkative children allowed us to observe many types of agentic behaviours, we cannot claim that less outgoing children or children who do not show the same behaviours do not have ways of expressing their agency. [less ▲]

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See detailThe EU Administrative Institutions, Their Law and Legal Scholarship
Mendes, Joana UL

in Cane, Peter; Hoffman, Herwig; Lindseth, Peter (Eds.) Oxford Handbook on Comparative Administrative Law (in press)

The chapter approaches the EU administrative institutions as catalysts of the development of administrative law of the European Union. As a chapter of the Oxford Handbook on Comparative Administrative Law ... [more ▼]

The chapter approaches the EU administrative institutions as catalysts of the development of administrative law of the European Union. As a chapter of the Oxford Handbook on Comparative Administrative Law, it explains the main traits of those institutions, how legal scholarship has portrayed them and how it has addressed the core aspects of their legal regimes. Furthermore, it traces the emergence and current state of EU administrative law, characterising the different roles comparative administrative law has had at different stages. It highlights the initial dissonance between the specificities of the EU administrative institutions and the state-matrix of general principles that were developed on the basis of functional comparison; the role of legal scholarship in shaping EU administrative law, in its efforts to give effect to an “utopia” (Chiti, 2007) of an integrated administration constitutionally framed by general principles and fundamental rights; the limits of resorting to comparative administrative law in the context of EU integration and, briefly, the crossroads at which EU administrative law currently stands. [less ▲]

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See detailReinforcing citizens’ participation by reforming European commission public consultations
Kies, Raphaël UL

in Alemanno, Alberto; Oregan, James (Eds.) Democratic Participation in a Citizen's Europe: What next for the EU? (in press)

In this chapter, I would like to draw some lessons from the failed attempts of democratization of the EU by proposing some guidelines that should be followed in order to envision a realistic deliberative ... [more ▼]

In this chapter, I would like to draw some lessons from the failed attempts of democratization of the EU by proposing some guidelines that should be followed in order to envision a realistic deliberative and inclusive transformation of the EU-decision making process. By following their spirits, I will propose an ambitious renovation of the public consultation regime of the EU Commission, the only institutionalized system of public consultation enshrined in the EU Treaties that however most of the citizens are not aware of. This is an idea that I first presented in at the conference at the World Bank (Kies 2016) and that has since then been discussed and presented in the report commissioned by the European Economic and Social Committee (Lironi and Peta 2017), the European Parliament (Korthagen et al. 2018) and is presently discussed within the European Court of Auditors. [less ▲]

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See detailThe Principle of Transparency and Access to Documents in the EU: for what, for whom, and of what?
Mendes, Joana UL

in Auby, Jean-Bernard; Jacqueline, Dutheil de la Rochère (Eds.) Traité de Droit Administratif (in press)

Written as a chapter for the third edition of the Traité de Droit Administratif Européen, directed by Jacqueline Dutheil de la Rochère and Jean Bernard Auby (Bryulant, forthcoming), this paper ... [more ▼]

Written as a chapter for the third edition of the Traité de Droit Administratif Européen, directed by Jacqueline Dutheil de la Rochère and Jean Bernard Auby (Bryulant, forthcoming), this paper characterizes transparency as an ambivalent principle of EU law and governance, serving both a functional and a democratic rationale. The analysis focuses on the right of access to documents, a right whose scope and democratic function very much depend on who requests and on the interpretation of the exceptions to access. While the former is a matter of practice, the latter is essentially the result of the main approaches that the Court of Justice of the European Union (CJEU) has followed hitherto: strict interpretation and application of the exceptions, on the one hand, and general presumptions of non-disclosure, on the other. The paper presents both. It argues that, while much criticized in the literature as contrary to the democratic function of the regulation on access to documents, general presumptions of non-disclosure merit a more nuanced analysis. They can be, under restricted circumstances, a way to protect the democratic function of the citizen’s right to access. Yet, the uncertain and evolving criteria for the establishment of a general presumption of non-disclosure have effectively carved out whole categories of documents from the possibility of access, insulating significant sections of EU public action from the pressure of democratic claims. Overall, the right of access to documents, as ancillary to a principle of democracy, has a limited capacity to change the nature of the polity and of the system of governance in which it is embedded. [less ▲]

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See detailThe Foundations of the Duty to Give Reasons and a Normative Reconstruction
Mendes, Joana UL

in Fisher, Elizabeth; King, Jeff; Young, Alison (Eds.) The Foundations and Future of Public Law (in press)

Despite operating in highly constrained legal environments, executive actors may act in a constitutive capacity. This observation prompts a critical assessment of the role of procedural principles in EU ... [more ▼]

Despite operating in highly constrained legal environments, executive actors may act in a constitutive capacity. This observation prompts a critical assessment of the role of procedural principles in EU administrative law. As norms of conduct deployed by executive bodies during the process of norm concretization, procedural principles may have legal dimensions that, while constitutionally relevant, may not come to the fore in judicial review. The chapter develops this argument with regard to the multifaceted character of the duty to give reasons. It argues that, as a norm of conduct, the duty to give reasons ought to ensure the constitutional embeddedness of the constitutive action of EU executive bodies. Such role is consistent both with the original relevance of the duty to give reasons to the law of integration (in the context of the European Coal and Steel Community) and with the current EU constitutional framework. The latter justifies reinstituting the original constitutional function of the duty to give reasons, irrespective of its current scope in the context of judicial review. [less ▲]

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See detailModel Checking MITL formulae on Timed Automata: a Logic-Based Approach
Menghi, Claudio UL; Bersani, Marcello; Rossi, Matteo et al

in ACM Transactions on Computational Logic (in press)

Timed Automata (TA) is de facto a standard modelling formalism to represent systems when the interest is the analysis of their behaviour as time progresses. This modelling formalism is mostly used for ... [more ▼]

Timed Automata (TA) is de facto a standard modelling formalism to represent systems when the interest is the analysis of their behaviour as time progresses. This modelling formalism is mostly used for checking whether the behaviours of a system satisfy a set of properties of interest. Even if efficient model-checkers for Timed Automata exist, these tools are not easily configurable. First, they are not designed to easily allow adding new Timed Automata constructs, such as new synchronization mechanisms or communication procedures, but they assume a fixed set of Timed Automata constructs. Second, they usually do not support the Metric Interval Temporal Logic (MITL) and rely on a precise semantics for the logic in which the property of interest is specified which cannot be easily modified and customized. Finally, they do not easily allow using different solvers that may speed up verification in different contexts. This paper presents a novel technique to perform model checking of Metric Interval Temporal Logic (MITL) properties on TA. The technique relies on the translation of both the TA and the MITL formula into an intermediate Constraint LTL over clocks (CLTLoc) formula which is verified through an available decision procedure. The technique is flexible since the intermediate logic allows the encoding of new semantics as well as new TA constructs, by just adding new CLTLoc formulae. Furthermore, our technique is not bound to a specific solver as the intermediate CLTLoc formula can be verified using different procedures. [less ▲]

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See detailComment on "Zamariola et al., (2018), Interoceptive Accuracy Scores are Problematic: Evidence from Simple Bivariate Correlations"-The Empirical Data Base, the Conceptual Reasoning and the Analysis behind this Statement are Misconceived and do not Support the Authors' Conclusions.
Ainley, V.; Tsakiris, Emmanouil UL; Pollatos, O. et al

in Biological Psychology (in press)

A recent paper by Zamariola and colleagues is widely cited as an authority on the invalidity of the Heartbeat Counting Task as a measure of interoceptive accuracy. Given the widespread interest in this ... [more ▼]

A recent paper by Zamariola and colleagues is widely cited as an authority on the invalidity of the Heartbeat Counting Task as a measure of interoceptive accuracy. Given the widespread interest in this field, it is essential that papers about methods are conceptually sound. However, only one of the authors' four criticisms appears substantiated - that people count too few heartbeats. Their arguments about "simple bivariate correlations" and their finding that interoceptive accuracy and heart rate correlate, depend on 'spurious correlations' arising from the overlooked point that interoceptive accuracy is a ratio. Moreover, scrutiny of the authors' data shows that their fourth criticism (that interoceptive accuracy is lower on longer trials) is confounded by differences in mean heart rate between trials. We present data from our own labs to refute it. We draw the authors' and editors' attention to these issues and trust that they will reconsider these erroneous conclusions. [less ▲]

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See detailEpistemological, critical and reflexive gymnastics: constructing research in "former Yugoslavia" in the face of the coloniality of knowledge
Blondel, Cyril UL

in Aiken, Gerald Taylor; Button, Cat (Eds.) Over-researched places (in press)

This article is a story narrating the evolution of my own reflections during my Ph.D.: “Planning at the Borders of European Peripheries: The Serbia/Croatia Borderland and the EU Cooperation and ... [more ▼]

This article is a story narrating the evolution of my own reflections during my Ph.D.: “Planning at the Borders of European Peripheries: The Serbia/Croatia Borderland and the EU Cooperation and Reconciliation Injunctions” (Ph.D. thesis, Tours, Université François-Rabelais, 2016). Using auto-ethnographic methods, this article demonstrates a conviction, the necessity to engage with a reflexive and critical approach, before, during, and after the production of research. I show first how I built the thesis’ epistemological approach, by progressively deconstructing classical theoretical frameworks (nationalist, postsocialist, post-Yugoslav). I expose and discuss then the outcomes of such a reflexivity, in particular how I gradually became conscious of the coloniality of (my) knowledge. These mental gymnastics allowed me to occasionally overcome – but regularly report on – the limits of my research, but also to recognize the unsurpassibility of certain aspects of my work connected to the situation in which I stated and conducted it. Reflecting on epistemological reflexivity contributes to clarifying scientific (in)validity of research, and better situates researcher’s arguments, their position and positionality. [less ▲]

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See detailTrends from 2006-2018 in Health, Health Behaviour, Health Outcomes and Social Context of Adolescents in Luxembourg
Heinz, Andreas UL; van Duin, Claire UL; Kern, Matthias Robert UL et al

Report (in press)

This report shows how 30 health indicators developed in the four Luxembourg HBSC surveys conducted in 2006, 2010, 2014 and 2018. There were positive trends especially in the health behaviour of the pupils ... [more ▼]

This report shows how 30 health indicators developed in the four Luxembourg HBSC surveys conducted in 2006, 2010, 2014 and 2018. There were positive trends especially in the health behaviour of the pupils: they smoke less and drink less alcohol. They also report more frequently that they brush their teeth regularly, eat more fruit and fewer sweets and consume fewer soft drinks. From 2006-2018, however, there were also deteriorations. For example, more pupils feel stressed from school and rate the climate among classmates worse. In addition, there are more pupils who are overweight and exercise less and more pupils report having psychosomatic health complaints. [less ▲]

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See detailImpact of learning to read in a mixed approach on neural tuning to words in beginning readers
van de Walle de Ghelcke, Alice; Rossion, Bruno; Schiltz, Christine UL et al

in Frontiers in Psychology (in press)

The impact of learning to read in a mixed approach using both the global and phonics teaching methods on the emergence of left hemisphere neural specialization for word recognition is yet unknown in ... [more ▼]

The impact of learning to read in a mixed approach using both the global and phonics teaching methods on the emergence of left hemisphere neural specialization for word recognition is yet unknown in children. Taking advantage of a natural school context with such a mixed approach, we tested 42 first graders behaviorally and with Fast Periodic Visual Stimulation using electroencephalographic recordings (FPVS-EEG) to measure selective neural responses to letter strings. Letter strings were inserted periodically (1/5) in pseudofonts in 40 s sequences displayed at 6 Hz and were either words globally taught at school, that could therefore be processed by visual whole-word form recognition (global method), or control words/pseudowords eliciting graphemephoneme (GP) mappings (phonics method). Results show that selective responses (F/5, 1.2 Hz) were left lateralized for control stimuli that triggered GP mappings but bilateral for globally taught words. It implies that neural mechanisms recruited during visual word processing are influenced by the nature of the mapping between written and spoken word forms. GP mappings induce left hemisphere discrimination responses, and visual recognition of whole-word forms induce bilateral responses, probably because the right hemisphere is relatively more involved in holistic visual object recognition. Splitting the group as a function of the mastery of GP mappings into “good” and “poor” readers strongly suggests that good readers actually processed all stimuli (including global words) predominantly with their left hemisphere, while poor readers showed bilateral responses for global words. These results show that in a mixed approach of teaching to read, global method instruction may induce neural processes that differ from those specialized for reading in the left hemisphere. Furthermore, given their difficulties in automatizing GP mappings, poor readers are especially prone to rely on this alternative visual strategy. A preprint of this paper has been released on Biorxiv (van de Walle de Ghelcke et al., 2018). [less ▲]

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See detailSelecting Fault Revealing Mutants
Titcheu Chekam, Thierry UL; Papadakis, Mike UL; Bissyande, Tegawendé François D Assise UL et al

in Empirical Software Engineering (in press)

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See detailDevelopment of a BIM-based web tool as Material and Component bank for a sustainable construction industry
Jayasinghe, Bhagya; Waldmann, Danièle UL

in Sustainability (in press)

The construction industry consumes an enormous amount of global resources and produces more waste than any other sector. The need to move toward sustainable development in construction requires ... [more ▼]

The construction industry consumes an enormous amount of global resources and produces more waste than any other sector. The need to move toward sustainable development in construction requires significant changes in construction and demolition (C&D) waste management. The estimation of waste, recycling materials and reusable components could be vital in waste management, achieving huge efficiency in the construction industry. Moreover, a typical building comprises of an extensive amount of materials and components with various characteristics. This study proposes a Building Information Modelling (BIM) based system to allow the circular economy by storing information of the materials and components of buildings and by effectively managing the recycling of materials and reuse of components. A tool which serves as Material and Component (M&C) bank is developed with PHP and MYSQL by making use of a web browser able to extract the materials and component information of a building through the BIM model. This information is vital for several uses such as quantification of C&D waste and assessing for the design for deconstruction. It can also be used to obtain the information of reusable condition of the components and instructions for the reconstruction. [less ▲]

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See detailExtending maps to profinite completions in finitely generated quasivarieties
Teheux, Bruno UL; Hansoul, Georges

in Beiträge zur Algebra und Geometrie (in press)

We consider the problem of extending maps from algebras to their profinite completions in finitely generated quasivarieties. Our developments are based on the construction of the profinite completion of ... [more ▼]

We consider the problem of extending maps from algebras to their profinite completions in finitely generated quasivarieties. Our developments are based on the construction of the profinite completion of an algebra as its natural extension. We provide an extension which is a multi-map and we study its continuity properties, and the conditions under which it is a map. [less ▲]

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See detailWüllner, Adolf
Tschacher, Werner UL; Krebs, Stefan UL

in Kraus, Hans-Christof (Ed.) Neue Deutsche Biographie (2021)

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See detailToward an SDN-based Data Collection Scheme for Vehicular Fog Computing
Boualouache, Abdelwahab UL; Soua, Ridha UL; Engel, Thomas UL

in IEEE International Conference on Communications ICC'2020 (2020, June 07)

With the integration of fog networks and vehicular networks, Vehicular Fog Computing (VFC) is a promising paradigm to efficiently collect data for improving safety, mobility, and driver experience during ... [more ▼]

With the integration of fog networks and vehicular networks, Vehicular Fog Computing (VFC) is a promising paradigm to efficiently collect data for improving safety, mobility, and driver experience during journeys. To this end, we exploit the Software-Defined Networking (SDN) paradigm to propose a fully-programmable, self-configurable, and context-aware data collection scheme for VFC. This scheme leverages a stochastic model to dynamically estimate the number of fog stations to be deployed. Our simulation results demonstrate that our proposed scheme provides lower latency and higher resiliency compared to classical data collection schemes. [less ▲]

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See detailEnhancing CoAP Group Communication to Support mMTC Over Satellite Networks
Soua, Ridha UL; Palattella, Maria Rita UL; Stemper, André UL et al

in IEEE International Conference on Communications (ICC) (2020, June)

Massive MTC (mMTC) is one of the application scenarios that upcoming 5G networks are expected to support. Satellites come into play in mMTC to complement and extend terrestrial networks in under-served ... [more ▼]

Massive MTC (mMTC) is one of the application scenarios that upcoming 5G networks are expected to support. Satellites come into play in mMTC to complement and extend terrestrial networks in under-served areas, where several services can benefit from the adoption of a group communication model. The IETF has specifically standardized the usage of CoAP group communication. However, CoAP responses are still sent in unicast from each single CoAP server to the CoAP client, which results in a substantial traffic load. Such problem becomes more severe in integrated IoT-Satellite networks given the limited bandwidth of the satellite return channel and the large number of IoT devices in a mMTC scenario. To reduce network traffic overhead in group communication and improve the network responsiveness, this paper proposes an aggregation scheme for the CoAP group communication in combination with Observer pattern and proxying. Results obtained by using the openSAND emulator and CoAPthon library corroborate the merit of our optimization in terms of overhead reduction and delay. [less ▲]

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