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See detailDevelopment of material law for silicone to simulate structural adhesive connections
Dias, Vincent UL; Odenbreit, Christoph UL; Hechler, Oliver UL et al

in Jens Schneider, Bernhard Weller (Ed.) Engineered Transparency Handbook (2012, October)

Recently developed adhesive materials enable the transfer of high loads between glass and other materials for structural use. However, for a numerical simulation, the description of the non-linear ... [more ▼]

Recently developed adhesive materials enable the transfer of high loads between glass and other materials for structural use. However, for a numerical simulation, the description of the non-linear behaviour of the adhesives must still be improved. Therefore extensive experimental investigations have been carried out on a structural elastomer and a material constitutive model has been derived based on the experimental results. Via numerical studies, the new constitutive model has been validated and assessed by comparison to test data and existing models. [less ▲]

Detailed reference viewed: 131 (14 UL)
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See detailDevelopment of New Concrete Mixes from Recycled Aggregates from known resources
Chewe, Ngapeya; Waldmann, Daniele UL

Presentation (2021, January 20)

Detailed reference viewed: 48 (2 UL)
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See detailDevelopment of new free-fall absolute gravimeters
Rothleitner, Christian UL; Svitlov, S.; Mérimèche, H. et al

in Metrologia (2009), 46(3), 283-297

The design and first results of two free-fall absolute gravimeters are reported: a stationary gravimeter is designed and can be used as a reference system and a portable gravimeter is aimed at field ... [more ▼]

The design and first results of two free-fall absolute gravimeters are reported: a stationary gravimeter is designed and can be used as a reference system and a portable gravimeter is aimed at field measurements. The determination of the acceleration due to gravity is done interferometrically in both instruments. The whole fringe signal is digitized by a high-speed analogue-to-digital converter, which is locked to a rubidium frequency standard. This fringe recording and processing is novel as compared with commercial free-fall gravimeters, which use an electronic zero-crossing discrimination. Advantages such as the application of a zero-phase-shifting digital filter to the digitized data are depicted. The portable gravimeter's mechanics deviate from the conventional type. Springs are used to accelerate and decelerate the carriage supporting the falling object. A detailed uncertainty budget is given for both gravimeters. The combined standard uncertainty for the portable and for the stationary gravimeter is estimated at 38.8 µGal and 16.6 µGal, respectively. The corresponding statistical uncertainties are 1.6 µGal (over one day of measurement) and 0.6 µGal (over one month of measurement). The different designs and dimensions of the new free-fall gravimeters can help to reveal unknown or so far underestimated systematic effects. The assessments of the uncertainties due to seismic noise and shock vibrations, and electronic phase shifts give validity to this assumption. [less ▲]

Detailed reference viewed: 140 (0 UL)
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See detailThe development of number symbol processing: A fast periodic visual stimulation study
Mejias, Sandrine; Rossion, Bruno; Schiltz, Christine UL

Poster (2014)

In our cultures the meaning of number symbols is acquired and reinforced through education. Accordingly, it is critical to understand how children become experts in the use of Arabic numbers (AN). Here ... [more ▼]

In our cultures the meaning of number symbols is acquired and reinforced through education. Accordingly, it is critical to understand how children become experts in the use of Arabic numbers (AN). Here, we used fast periodic visual stimulation (FPVS) combined with a repetition-suppression paradigm (Rossion & Boremanse, 2011) to measure rapidly and objectively the sensitivity to symbolic numerical stimuli of 6-to-12-y.o. children (n=20) and adults (n=11). Participants were presented four sequences: two of AN and two of AN-like sham stimuli. Half of the sequences consisted of different stimuli (“10”, “18”, “12”,...), the other half of same stimuli (“10”) presented repeatedly. Stimuli appeared at 3.5 items/second (fundamental frequency=3.5 Hz), for 60 seconds. We observed a large increase of the EEG response at 3.5 Hz (a steady-state visual-evoked potential; Regan, 1966) over parieto-occipital electrodes. This response was larger during different than same sequences, especially when participants saw real (vs. sham) AN. The amplitude of this specific response to numbers increased with children’s age. Moreover its location changed from posterior occipital electrodes in childhood to more lateral parietal electrodes in adulthood. These results indicate that FPVS of AN is a promising tool to study the sensitivity to numerical magnitude in children and adults. [less ▲]

Detailed reference viewed: 132 (6 UL)
See detailDevelopment of persuasive speech in emergent bilingual siblings
Kirsch, Claudine UL

Scientific Conference (2013, March 07)

Strategies of persuasion are an integral element in everyday conversation, yet they have been little researched in young children. The few existing studies have shown that three to six year olds use a ... [more ▼]

Strategies of persuasion are an integral element in everyday conversation, yet they have been little researched in young children. The few existing studies have shown that three to six year olds use a wide variety of strategies such as requesting, challenging, reasoning, commanding, protesting, explaining, affirming, and promising or threatening (Bartsch, Wright & Estes, 2010; Trawick-Smith, 1992; Weiss & Sachs, 1991). Among the few developmental changes that have been reported are an increase in the number and range of strategies, in the use of listener-adapted strategies, and in the number of positive strategies (Bartsch, Wright and Estes 2010, Kline & Clinton 1998, Nippold 1994). There is currently no research on persuasive strategies in young bilingual children. The present study investigates early persuasive language practices of two bilingual boys aged three and five. At the start of the study the brothers, then aged two and four, spoke English and understood Luxembourgish. Following a move to trilingual Luxembourg they learned to speak Luxembourgish and became active bilinguals. Data collection comprised weekly audio and video-recordings over a period of 10 months. The analysis focused on the children’s strategies in various languages and settings, on changes over time and on the reasons behind the changes. The findings show that the three-year old used few persuasive strategies, principally requesting, affirming and protesting. The five-year old used a greater number and a wider range of persuasive strategies. For example, he employed some higher-order strategies such as explaining and questioning, which testify to his more developed language skills, social awareness and reasoning ability. Over the period of the data collection the number of non-verbal strategies in both children decreased and the length and the complexity of their utterances in both English and Luxembourgish (and even in French) increased. [less ▲]

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See detailThe Development of Repair Businesses in Esch-sur-Alzette
Krebs, Stefan UL

Scientific Conference (2019)

Detailed reference viewed: 29 (1 UL)
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See detailDevelopment of Safe Autonomous Mobile Service Robots using an Active Integrated Approach
Voos, Holger UL; Ertle, Philipp; Söffker, Dirk

in 41st International Symposium on Robotics (ISR) 2010, Munich, Germany (2010)

Mobile service robots are expected to provide services in various domains of life. Herein, the main challenge for the robot is the execution of complex tasks within an unstructured dynamic environment. In ... [more ▼]

Mobile service robots are expected to provide services in various domains of life. Herein, the main challenge for the robot is the execution of complex tasks within an unstructured dynamic environment. In order to achieve the necessary highly flexible behavior, mobile service robots must have a high degree of autonomy. However, although much effort is spent on the investigation and realization of autonomy since decades, it is mostly neglected, that autonomous robots are also causing new types of safety problems. It seems impossible to solve these problems with traditional passive safety approaches. Therefore, new methods are introduced in order to check safety during operation time. [less ▲]

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See detailDevelopment of SRS.php, a Simple Object Access Protocol-based library for data acquisition from integrated biological databases.
Barbosa Da Silva, Adriano UL; Pafilis, E.; Ortega, J. M. et al

in Genetics and Molecular Research (2007), 6(4), 1142-1150

Data integration has become an important task for biological database providers. The current model for data exchange among different sources simplifies the manner that distinct information is accessed by ... [more ▼]

Data integration has become an important task for biological database providers. The current model for data exchange among different sources simplifies the manner that distinct information is accessed by users. The evolution of data representation from HTML to XML enabled programs, instead of humans, to interact with biological databases. We present here SRS.php, a PHP library that can interact with the data integration Sequence Retrieval System (SRS). The library has been written using SOAP definitions, and permits the programmatic communication through webservices with the SRS. The interactions are possible by invoking the methods described in WSDL by exchanging XML messages. The current functions available in the library have been built to access specific data stored in any of the 90 different databases (such as UNIPROT, KEGG and GO) using the same query syntax format. The inclusion of the described functions in the source of scripts written in PHP enables them as webservice clients to the SRS server. The functions permit one to query the whole content of any SRS database, to list specific records in these databases, to get specific fields from the records, and to link any record among any pair of linked databases. The case study presented exemplifies the library usage to retrieve information regarding registries of a Plant Defense Mechanisms database. The Plant Defense Mechanisms database is currently being developed, and the proposal of SRS.php library usage is to enable the data acquisition for the further warehousing tasks related to its setup and maintenance. [less ▲]

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See detailThe Development of the Preverbal Markers in St-Louis-Creole: The Formation of a TMA-System
Ehrhart, Sabine UL

in Language Sciences (1992), 14(3), 233-247

St-Louis-Creole or Tayo is spoken by the people of the St-Louis tribe in New Caledonia. Our data stem from several months of fieldwork in 1989 and 1990 with some Melanesian families of the tribe. All the ... [more ▼]

St-Louis-Creole or Tayo is spoken by the people of the St-Louis tribe in New Caledonia. Our data stem from several months of fieldwork in 1989 and 1990 with some Melanesian families of the tribe. All the phrases and structures we quote in this article can be placed in a communicative and syntactic context. [less ▲]

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See detailDevelopment of the skeletal system.
Balling, Rudi UL; Lau, C. F.; Dietrich, S. et al

in Ciba Foundation Symposium (1992), 165

The analysis of the development of the skeletal system has been greatly facilitated by the availability of a large number of mouse mutants with skeletal defects. Whereas for many of these mutants a ... [more ▼]

The analysis of the development of the skeletal system has been greatly facilitated by the availability of a large number of mouse mutants with skeletal defects. Whereas for many of these mutants a description of the main phenotypic abnormalities is known, molecular insight into the ontogeny of the skeletal system is limited. One of the few skeletal mutants for which the molecular basis is known is undulated. These mice have a defect in the differentiation of the sclerotome and Pax-1, a mouse paired-box containing gene, has been identified as a candidate gene for this mutation. A molecular analysis of three independent undulated alleles revealed that in each case the Pax-1 gene is affected. One of the alleles could be classified as a null allele, in which the Pax-1 gene is deleted. A phenotypic analysis shows that Pax-1 is required for proper differentiation of intervertebral discs and vertebral bodies. [less ▲]

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See detailDevelopment of the vertebral column: Morphogenesis and genes
Wilting, J; Müller, T S; Ebensperger, C et al

in Vorgel, R; Fanghaenel, J; Giebel, J (Eds.) Aspects of Teratologie (1996)

Detailed reference viewed: 117 (0 UL)
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See detailThe development of working memory capacity and fluid intelligence in children
Engel de Abreu, Pascale UL; Gathercole, S; Conway, A

Scientific Conference (2010, December)

A longitudinal study was conducted to investigate the relationship between working memory capacity and fluid intelligence and how this relationship develops in early childhood. The major aim was to ... [more ▼]

A longitudinal study was conducted to investigate the relationship between working memory capacity and fluid intelligence and how this relationship develops in early childhood. The major aim was to determine which aspect of the working memory system – short-term storage or executive attention – drives the relationship with fluid intelligence. A sample of 119 children was followed from kindergarten to second grade and completed multiple assessments of short-term memory, working memory, and fluid intelligence. Latent growth curve modeling was employed to investigate the factor structure in each grade and to assess the stability of the factor structure over time. The data suggest that working memory, short-term memory, and fluid intelligence are highly related but separate constructs in young children and the factor structure among these constructs is invariant across time. The results further showed that when the common variance between working memory and short-term memory was controlled, the residual working memory factor revealed significant links with fluid intelligence whereas the residual short-term memory factor did not. These findings, consistent with previous research on young adults, suggest that executive attention, rather than the storage component of working memory, is the primary source of the relationship between working memory capacity and fluid intelligence. [less ▲]

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See detailDevelopment Process for a Charge Air Cooler to Meet Modern Requirements
Puillandre, Youen; Kedziora, Slawomir UL; Mailliet-Bestel, Damienne et al

in White, Peter (Ed.) Vehicle thermal management systems : VTMS 8 (2007)

Detailed reference viewed: 89 (1 UL)
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See detailDevelopment(s) in mouse genetics.
Balling, Rudi UL; Kessel, M.

in Biochemistry & Cell Biology (1990), 68(2), 404-7

Detailed reference viewed: 92 (0 UL)
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See detailDevelopmental changes in neural letter-selectivity: A 1-year follow-up of beginning readers
van de Walle de Ghelcke, Alice; Rossion, Bruno; Schiltz, Christine UL et al

in Developmental science (2021), 24(1), 12999

Detailed reference viewed: 61 (2 UL)