Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
See detailDevenir entrepreneur en partant de ses passions
Fletcher, Denise Elaine UL; Geraudel, Mickaël UL

Speeches/Talks (2016)

Detailed reference viewed: 99 (4 UL)
See detailDevenir entrepreneur en partant de ses passions
Geraudel, Mickaël UL

Speeches/Talks (2016)

Detailed reference viewed: 40 (0 UL)
See detailDeviant behavior and violence in schools: A report from Luxembourg
Steffgen, Georges UL

Presentation (2009, January)

Detailed reference viewed: 86 (0 UL)
Full Text
Peer Reviewed
See detailDeviant behaviour and violence in Luxembourg schools
Steffgen, Georges UL

in International Journal on Violence and Schools (2009), 5

Detailed reference viewed: 117 (3 UL)
Full Text
Peer Reviewed
See detailDevice Attacker Models: Fact and Fiction
Yu, Jiangshan UL; Ryan, Mark Dermot

in Security Protocols XXIII - 23rd International Workshop, Cambridge UK, March 31 - April 2, 2015, Revised Selected Papers (2015)

Detailed reference viewed: 170 (13 UL)
Full Text
Peer Reviewed
See detailDevice Grouping for Fast and Efficient Channel Access in IEEE 802.11ah based IoT Networks
Bhandari, Sabin; Sharma, Shree Krishna UL; Wang, Xianbin

in Proc. IEEE Int. Conf. Communications 2018 (2018, July)

The recent advances in Internet of Things (IoT) have led to numerous emerging applications ranging from eHealthcare to industrial control, which often demand stringent Quality of Service (QoS ... [more ▼]

The recent advances in Internet of Things (IoT) have led to numerous emerging applications ranging from eHealthcare to industrial control, which often demand stringent Quality of Service (QoS) requirements such as low-latency and high system reliability. However, the ever-increasing number of connected devices in ultra-dense IoT networks and the dynamic traffic patterns increase the channel access delay and packet collision rate. In this regard, this paper proposes a sector-based device grouping scheme for fast and efficient channel access in IEEE 802.11ah based IoT networks such that the total number of the connected devices within each sector is dramatically reduced. In the proposed framework, the Access Point (AP) divides its coverage area into different sectors, and then each sector is further divided into distinct groups based on the number of devices and their location information available from the cloud-center. Subsequently, individual groups within a sector are assigned to specific Random Access Window (RAW) slots, and the devices within distinct groups in different sectors access the allocated RAW slots by employing a spatial orthogonal access mechanism. The performance of the proposed sectorized device grouping scheme has been analyzed in terms of system delay and network throughput. Our simulation results show that the proposed scheme can significantly enhance the network throughput while simultaneously decreasing the system delay as compared to the conventional Distributed Coordination Function (DCF) and IEEE 802.11ah grouping scheme. [less ▲]

Detailed reference viewed: 84 (2 UL)
Full Text
Peer Reviewed
See detailDevice simulation of all-perovskite four-terminal tandem solar cells: towards 33% efficiency
Singh, Ajay UL; Gagliardi, Alessio

in EPJ Photovoltaics (2021), 12(4),

Inorganic–organic hybrid perovskites offer wide optical absorption, long charge carrier diffusion length, and high optical-to-electrical conversion, enabling more than 25% efficiency of single-junction ... [more ▼]

Inorganic–organic hybrid perovskites offer wide optical absorption, long charge carrier diffusion length, and high optical-to-electrical conversion, enabling more than 25% efficiency of single-junction perovskite solar cells. All-perovskite four-terminal (4T) tandem solar cells have gained great attention because of solution-processability and potentially high efficiency without a need for current-matching between subcells. To make the best use of a tandem architecture, the subcell bandgaps and thicknesses must be optimized. This study presents a drift-diffusion simulation model to find optimum device parameters for a 4T tandem cell exceeding 33% of efficiency. Optimized subcell bandgaps and thicknesses, contact workfunctions, charge transport layer doping and perovskite surface modification are investigated for all-perovskite 4T tandem solar cells. Also, using real material and device parameters, the impact of bulk and interface traps is investigated. It is observed that, despite high recombination losses, the 4T device can achieve very high efficiencies for a broad range of bandgap combinations. We obtained the best efficiency for top and bottom cell bandgaps close to 1.55 eV and 0.9 eV, respectively. The optimum thickness of the top and bottom cells are found to be about 250 nm and 450 nm, respectively. Furthermore, we investigated that doping in the hole transport layers in both the subcells can significantly improve tandem cell efficiency. The present study will provide the experimentalists an optimum device with optimized bandgaps, thicknesses, contact workfunctions, perovskite surface modification and doping in subcells, enabling high-efficiency all-perovskite 4T tandem solar cells. [less ▲]

Detailed reference viewed: 69 (4 UL)
Full Text
Peer Reviewed
See detailDevice-based assessment through a mobile application in the Luxembourg Parkinson Cohort
Stallinger, Christian; Satagopam, Venkata; Banda, Peter UL et al

in Basal Ganglia (2017, May), 8

Introduction: The project focuses on the integration device-based assessment (DBA) with a mobile application (mPower) into the longitudinal deeply-phenotyped HELP-PD (Health in the Elderly Luxembourgish ... [more ▼]

Introduction: The project focuses on the integration device-based assessment (DBA) with a mobile application (mPower) into the longitudinal deeply-phenotyped HELP-PD (Health in the Elderly Luxembourgish Population with a focus on Parkinson’s disease) cohort for patients with Parkinsonism in Luxembourg and the Greater Region to monitor frequency and degree of variation in symptoms of Parkinsonism, to identify potential sources and modulators of variation and to evaluate how symptoms are correlated with these modulators across patients. Methods: We integrate for the first time the mPower iOS app into a deeply phenotyped cohort. mPower is one of the first apps to use Apple’s Research Kit framework and combines a traditional survey-based approach with more granular and precise data gained from a person’s iPhone related to sensor- (e.g. step count, GPS-tracking) or task-based assessments (e.g. finger tapping, tremor detection, sustained phonation, simple gait analysis, memory test). Anonymized longitudinal data is sent to a repository, then retrieved, matched, and correlated with conventional HELP-PD data from a total of 47 screening instruments for motor and non-motor functions in Parkinsonism obtained from annual visits of study participants. 14 patients with clinically confirmed IPD are currently included in the pilot phase. Results/Discussion: We modified the mPower app and successfully integrated it into HELP-PD’s novel database infrastructure, allowing for a wide variety of analyses. The reporting system is able to handle multiple DBAs, with the implementation of an in-depth gait analysis system currently pending. Considerable attention was given to data protection. The system is currently fully functional with the pilot phase having started in June 2016. First correlations with traditional clinical data are planned for early 2017. [less ▲]

Detailed reference viewed: 187 (7 UL)
Full Text
Peer Reviewed
See detailDevice-Free Indoor Localization Based on Ambient FM Radio Signals
Popleteev, Andrei UL; Engel, Thomas UL

in International Journal of Ambient Computing and Intelligence (2014), 6(January-March), 35-44

This paper presents the concept of device-free indoor localization using only a passive receiver and ambient FM radio signals. Experimental results based on empirical measurements demonstrate the ... [more ▼]

This paper presents the concept of device-free indoor localization using only a passive receiver and ambient FM radio signals. Experimental results based on empirical measurements demonstrate the feasibility of the proposed approach. We also evaluate fine-grained localization performance of the system, its temporal stability, and highlight the role of frequency diversity for passive localization. [less ▲]

Detailed reference viewed: 213 (3 UL)
Full Text
Peer Reviewed
See detailDevice-free indoor localization using ambient radio signals
Popleteev, Andrei UL

in UbiComp-2013 Adjunct proceedings (2013)

This paper investigates feasibility of device-free indoor localization using single passive receiver. Instead of local wireless nodes sharing one frequency channel, this work leverages multiple ambient FM ... [more ▼]

This paper investigates feasibility of device-free indoor localization using single passive receiver. Instead of local wireless nodes sharing one frequency channel, this work leverages multiple ambient FM radio stations. Experimental results demonstrate feasibility of the proposed approach and highlight the role of frequency diversity for passive localization. [less ▲]

Detailed reference viewed: 153 (4 UL)
Full Text
See detailLe devoir du gestionnaire d'OPC d'agir dans l'intérêt des porteurs de parts
Riassetto, Isabelle UL

in A. Gourio et J.-J. Daigre (Ed.) Droit bancaire et financier - Mélanges AEDBF-France VI (2013)

Detailed reference viewed: 149 (3 UL)
Peer Reviewed
See detailLes devoirs d'information de l'investisseur sur les marchés spéculatifs aux Etats-Unis
Conac, Pierre-Henri UL

in Revue de Droit Bancaire et Financier (2002), (6), 354-359

Detailed reference viewed: 82 (1 UL)
Full Text
Peer Reviewed
See detailDevoirs envers les investisseurs en OPC
Riassetto, Isabelle UL

in Revue de Droit Bancaire et Financier (2016)

Detailed reference viewed: 112 (2 UL)
Full Text
See detailDevOps and its Philosophy : Education Matters!
Bobrov, Evgeny; Antonio, Bucchiarone; Capozucca, Alfredo UL et al

Report (2019)

DevOps processes comply with principles and offer practices with main objective to support efficiently the evolution of IT systems. To be efficient a DevOps process relies on a set of integrated tools ... [more ▼]

DevOps processes comply with principles and offer practices with main objective to support efficiently the evolution of IT systems. To be efficient a DevOps process relies on a set of integrated tools. DevOps is among the first competencies together with Agile method required by the industry. As a new approach it is necessary to develop and offer to the academy and to the industry training programs to prepare our engineers in the best possible way. In this chapter we present the main aspects of the educational effort made in the recent years to educate to the concepts and values of the DevOps philosophy. This includes principles, practices, tools and architectures, primarily the microservices architectural style, which shares many aspects of DevOps approaches especially the modularity and flexibility which enables continuous change and delivery. Two experiences have been made, one at academic level as a master program course and the other, as an industrial training. Based on those two experiences, we provide a comparative analysis and some proposals in order to develop and improve DevOps education for the future. [less ▲]

Detailed reference viewed: 83 (3 UL)
Full Text
Peer Reviewed
See detailDevOps and Its Philosophy: Education Matters!
Bobrov, Evgeny; Bucchiarone, Antonio; Capozucca, Alfredo UL et al

in Mazzara, Manuel; Rivera, Victor; Sadovykh, Andrey (Eds.) et al Microservices: Science and Engineering (2020)

DevOps processes comply with principles and offer practices with the main objective of efficiently supporting the evolution of IT systems. To be efficient, a DevOps process relies on a set of integrated ... [more ▼]

DevOps processes comply with principles and offer practices with the main objective of efficiently supporting the evolution of IT systems. To be efficient, a DevOps process relies on a set of integrated tools. DevOps is among the first competencies, together with agile method, required by the industry. As a new approach it is necessary to develop and offer to the academy and to the industry training programs to prepare engineers in the best possible way. In this chapter we present the main aspects of the educational effort made in recent years to educate engineers on the concepts and values of the DevOps philosophy. This includes principles, practices, tools, and architectures, primarily the microservices architectural style, which shares many aspects of DevOps approaches, especially modularity and flexibility, which enable continuous change and delivery. Two experiments have been carried out, one at the academic level as a master program course and the other as an industrial training. Based on those two, we provide a comparative analysis and some proposals in order to develop and improve DevOps education for the future. [less ▲]

Detailed reference viewed: 132 (3 UL)
Full Text
Peer Reviewed
See detailDevoutness to Islam and the Attitudinal Acceptance of Political Violence Among Young Muslims in Germany
Hadjar, Andreas UL; Schiefer, David; Boehnke, Klaus et al

in Political Psychology (2019), 40(2), 205-222

This article investigates the links between religious beliefs and capitalist mentalities—namely devoutness to Islam and hierarchic self-interest (HSI)—and violence-accepting attitudes among the young ... [more ▼]

This article investigates the links between religious beliefs and capitalist mentalities—namely devoutness to Islam and hierarchic self-interest (HSI)—and violence-accepting attitudes among the young Muslim migrant population in Germany. Following a situational perspective, these links are analyzed under different individual conditions structured by (socioeconomic) precariousness and education. Based on framing approaches and concepts from socialization theory, we derive the following hypothesis: The links between religious beliefs and capitalist mentalities and the attitudinal acceptance of violence are stronger among individuals with low levels of education and a precarious economic status (compared to high education/non-precarious status). The strongest link is expected for a negative status inconsistency (high education/precarious economic status). Structural equation models for data from a random probability sample of 350 Muslims (aged 14–32 years) in Germany indicate that attitudinal acceptance of violence among young Muslims is not predicted by devoutness to Islam but by economic precariousness and by acceptance of capitalist values of the HSI belief system. [less ▲]

Detailed reference viewed: 177 (6 UL)