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See detailWeb Materialities
Schafer, Valerie UL

Scientific Conference (2021, December 03)

Although Web development was driven by a conceptual repertoire of dematerialisation, of eliminating borders between “Netizens” and ensuring the independence of cyberspace (John Perry Barlow), in the 1990s ... [more ▼]

Although Web development was driven by a conceptual repertoire of dematerialisation, of eliminating borders between “Netizens” and ensuring the independence of cyberspace (John Perry Barlow), in the 1990s the accessibility of the Web was largely subject to material challenges associated with infrastructures, equipment, Internet billing and regulation. They were also linked with groups of technicians and communities of practice, the development of ISPs, the acquisition of equipment or the use of cyber cafés. Taking the example of France in the 90s as a starting point, this contribution will shed light on the agencies at work in a bid to demonstrate why digital materiality matters in Web histories. [less ▲]

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See detailThe “Web of pros” in the 1990s: The professional acclimation of the World Wide Web in France
Schafer, Valerie UL; Thierry, Benjamin

in New Media and Society (2016), 18(7), 1143-1158

This article, focusing on France, explores the notion of a “Web of professionals” and seeks to establish its factual, epistemological, and methodological implications for the history of the World Wide Web ... [more ▼]

This article, focusing on France, explores the notion of a “Web of professionals” and seeks to establish its factual, epistemological, and methodological implications for the history of the World Wide Web in the 1990s. This research reflects on the promises of the New Economy and the roles of the various controversies, cultures, imaginaries, and forms of mediation affecting the business world in its appropriation of the Web. It also aims to reappraise the individual and collective stakeholders whose active part has been somehow underestimated or obscured by the image of the mass Internet user. The professionalization of Web activities, the development of a new generation of entrepreneurs and the conversion of business models to online practices are all significant parts of the emergent Web culture in France, as well as factors contributing to this emergence. [less ▲]

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See detailWeb Services Verification and Prudent Implementation
Avanesov, Tigran UL; Chevalier, Yannick; Anis Mekki, Mohammed et al

in Data Privacy Management and Autonomous Spontaneus Security - 6th International Workshop, DPM 2011, and 4th International Workshop, SETOP 2011, Leuven, Belgium, September 15-16, 2011, Revised Selected Papers. (2011)

Alice&Bob notation is widely used to describe conversations between partners in security protocols. We present a tool that compiles an Alice&Bob description of a Web Services choreography into a set of ... [more ▼]

Alice&Bob notation is widely used to describe conversations between partners in security protocols. We present a tool that compiles an Alice&Bob description of a Web Services choreography into a set of servlets. For that we first compute for each partner an executable specification as prudent as possible of her role in the choreography. This specification is expressed in ASLan language, a formal language designed for modeling Web Services tied with security policies. Then we can check with automatic tools that this ASLan specification verifies some required security properties such as secrecy and authentication. If no flaw is found, we compile the specification into Java servlets that real partners can use to execute the choreography. [less ▲]

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See detailA web-based quality control system for assessment processes
Busana, Gilbert UL; Koenig, Vincent UL; Martin, Romain UL et al

in International Journal of Psychology (2008), 43

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See detailA web-based system for mathematical problem understanding and solving
Busana, Gilbert UL; Martin, Romain UL; Langers, Christian UL

in International Journal of Psychology (2008), 43

In the domain of educational multimedia for primary school a lot of research has been done in the field of computer assisted calculation frameworks. However, much less work has been done in the area of ... [more ▼]

In the domain of educational multimedia for primary school a lot of research has been done in the field of computer assisted calculation frameworks. However, much less work has been done in the area of problem solving and especially in the area of problem understanding. The present project aims at the development and the scientific assessment of a computer assisted framework for mathematical problem understanding and solving (CAMPUS) based on analogical representations in form of number lines (Klein, Beishuizen, & Treffers, 1998; Petitto, 1990) and graphs. This tool will be deployed by our formerly developed computer assisted testing platform (http://www.tao.lu) [see our proposal on TAO] and will be the first learning tool on that system. The CAMPUS framework will help teachers to more efficiently analyze the different steps of the problem solving strategies of their students and thereby allow them to give more adapted feedback in order to guide the learner’s process. The main characteristic of this platform is the use of the computer as a framework for the development of problem solving strategies in mathematics. The tool imposes no restrictions in the resolution processes of the learner, but avoids him to get lost in those steps of solving that are obviously wrong (for example: addition of objects of different classes). In this way, the CAMPUS architecture is a sort of a cognitive tool that helps the student in structuring his thinking by telling him which calculations are mathematically or logically not permitted, but it does not suggest him a precise way towards the solution. In contrary, each logically correct action will be accepted by the system. Consequently, the CAMPUS tool is not a drill-and-practice tool, but it proposes a framework for the student in which he can develop problem solving strategies in complex situations. CAMPUS is based on a (socio-)cognitive approach, which means that the tool permits to solve the problems in an individual or a group situation, even if the teamwork is explicitly desirable in such a pedagogical approach (Webb, 1994; Yadrick, Regian, Connolly Gomez, & Robertson Schule, 1997). The tool is intended to be integrated into daily classroom teaching as a tool for triggering the learning process and therefore has not to be considered as a separate or additional exercising tool. The students learning process should be supported by the tool on one hand and by additional teacher support on the other hand. The learner and his learning process are at the centre of the learning activity (Tardif, 1998) and the teacher plays a supervision and support role in this sort of learning environment (Hudson, 1997; Tardif, 1998). Moreover, the use of analogical representations (of the operations to be taken) and graphs (representing the resolution steps adopted by the learner) should favour, on the learner’s side, the establishment of mental models including analogical representations and supporting the resolution process of this type of problems, even beyond the use of this computerized platform. We could expect that the learner will develop, through his experiences with the platform (which prevents experimentation with arbitrary meaningless calculations), thorough knowledge concerning the solving of mathematical problems based, at least partially, on non-explicit learning processes as described, for example, in the connectionist models of learning theories (Spitzer, 2000). These connectionist models show in fact that significant learning can be achieved in a non-explicit manner if the learner is placed in an environment which structures his behavior along certain regularities (even if these regularities are not taught in an explicit manner). The CAMPUS framework is based on a conceptual idea that emerged from previous research (Busana, 1999) where a prototype using a similar architecture has been developed in an alpha-version using Quest. This alpha-version was developed in only one language (German) and ran only under Windows. The new CAMPUS-tool will be published under the open-source licence, will be platform independent (plays in Macromedia’s Flash Player) and will be delivered over the Internet. [less ▲]

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See detailA web-based tool for efficient carbon footprint calculations: Lux screen CO2
Hild, Paula UL; Guiton, Mélanie; Pieropan, Julien et al

Scientific Conference (2011, August 30)

Several commercial software tools for Life Cycle Assessment (LCA) are already available on the market and recently included ad-hoc extensions to calculate carbon footprints. Unfortunately, these software ... [more ▼]

Several commercial software tools for Life Cycle Assessment (LCA) are already available on the market and recently included ad-hoc extensions to calculate carbon footprints. Unfortunately, these software tools are often too complex and require too much specific expertise to be used by SMEs, consultants and others. For companies without any experience in the field of environmental assessment, the analysis of company-related CO2 emissions within a regional context is often an impossible task. The presented easy-to-use CO2 screening tool, adapted to their needs, was designed to support these companies. The web-based tool, ‘Lux screen CO2’ is able to assess and report site related direct and indirect greenhouse gas emissions, including the whole supply chain of the company and food-related impacts of the company restaurant. [less ▲]

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See detailA web-based versus paper questionnaire on alcohol and tobacco in adolescents.
Lygidakis, Charilaos UL; Rigon, Sara; Cambiaso, Silvio et al

in Telemedicine journal and e-health : the official journal of the American Telemedicine Association (2010), 16(9), 925-30

OBJECTIVE: Our study was aimed at comparing health behavior data collected from a Web-based self-administered questionnaire (Web SAQ) versus a paper-and-pencil self-administered questionnaire and ... [more ▼]

OBJECTIVE: Our study was aimed at comparing health behavior data collected from a Web-based self-administered questionnaire (Web SAQ) versus a paper-and-pencil self-administered questionnaire and assessing the feasibility of the application. MATERIALS AND METHODS: One hundred and ninety (n = 190) pupils (ages 14-16 years) of senior high schools anonymously completed a questionnaire, with demographics and queries about lifestyle, alcohol, and tobacco use. For each class, the adolescents were randomly assigned to complete either the paper version of the questionnaire or the equivalent Web-based one, which used a customized platform developed for the purposes of this survey. RESULTS: Females who filled out the Web SAQ required significantly less time and completed a significantly higher percentage of its items. Although the majority of questions on tobacco and alcohol did not differ significantly across the two administration modes, there were gender-related differences in some sensitive information. Male adolescents on the Web SAQ accounted higher per hour drink consumption (r = 0.27, p = 0.015) and more numerous episodes of inebriety (r = 0.26, p = 0.010), whereas females seemed to state a younger age of alcohol onset (r = 0.33, p = 0.002). Females were more likely to report being monthly smokers on the Web SAQ (odds ratio = 0.37). Adolescents felt significantly less observed and females referred being more independent while compiling the Web SAQ. CONCLUSIONS: The findings of the study suggest that differences in reporting of some behavior of adolescents when using a Web SAQ do exist, despite the small-to-medium effect sizes. Exploiting the Web requires further investigation for extensive comprehension of the reasons for such differences. [less ▲]

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See detailWeber et Kelsen : de la prétention scientifique
Lefort, Elisabeth UL

Presentation (2013, March)

Detailed reference viewed: 38 (1 UL)
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See detailWeber Fraction as an index of the acuity of the ANS and its relationship to arithmetic performance by adults
Guillaume, Mathieu UL; Mussolin, Christophe; Nys, Julie et al

Scientific Conference (2012)

Detailed reference viewed: 67 (0 UL)
See detailWebGIS Schule – Olympische Spiele weltweit
Heck, Sandra UL

Learning material (2008)

Mithilfe eines WebGIS-Tools zum Thema Olympische Spiele werden Schülerinnen und Schüler (und Lehrkräfte) an den GIS-basierten Unterricht herangeführt. Die Arbeit mit WebGIS-Schule erfolgt ausschließlich ... [more ▼]

Mithilfe eines WebGIS-Tools zum Thema Olympische Spiele werden Schülerinnen und Schüler (und Lehrkräfte) an den GIS-basierten Unterricht herangeführt. Die Arbeit mit WebGIS-Schule erfolgt ausschließlich im Browser - Sie benötigen lediglich einen Rechner mit Internetzugang. Es muss keine GIS-Software installiert werden. Das WebGIS zu den Olympischen Sommerspielen ist ein Angebot von WebGIS-Schule, einem Projekt der Johannes Gutenberg-Universität Mainz. Die Bereitstellung erprobter Materialien trägt dazu bei, Barrieren hinsichtlich der Arbeit mit Geographischen Informationssystemen an Schulen abzubauen. [less ▲]

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See detailWebseiten-Analyse
Schünzel, Anja; Traue, Boris UL

in Baur, Nina; Blasius, Jörg (Eds.) Methoden der empirischen Sozialforschung (2019)

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See detailWebsite Fingerprinting at Internet Scale
Panchenko, Andriy UL; Lanze, Fabian UL; Zinnen, Andreas et al

in Proceedings of the 23rd Internet Society (ISOC) Network and Distributed System Security Symposium (NDSS 2016) (2016, February)

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See detailWebsite Fingerprinting in Onion Routing Based Anonymization Networks
Panchenko, Andriy UL; Niessen, Lukas; Zinnen, Andreas UL et al

in 18th ACM Computer and Communications Security (ACM CCS) Workshop on Privacy in the Electronic Society (WPES) (2011)

Detailed reference viewed: 186 (0 UL)
See detailWechselrahmen : medienhistorische Fallstudien zum Romananfang des 13. Jahrhunderts
Bendheim, Amelie UL

Book published by Winter (2016)

Die Studie unternimmt eine medien- und sozialhistorische Neubeschreibung des Erzählanfangs mittelhochdeutscher Romane. Im Kontext der semi-oralen Rezeptions- und Performanzsituation des Mittelalters ... [more ▼]

Die Studie unternimmt eine medien- und sozialhistorische Neubeschreibung des Erzählanfangs mittelhochdeutscher Romane. Im Kontext der semi-oralen Rezeptions- und Performanzsituation des Mittelalters werden Varianzen in der Überlieferung des Texteingangs nicht als Verderbnis betrachtet, sondern ihnen wird eine kommunikative Funktion zugeschrieben. Anhand detaillierter Einzelanalysen dreier Romane aus dem 13. Jahrhundert (Flore und Blanscheflur, Wigalois, Wigamur) wird die erzähltechnische und rezeptionslenkende Funktion des variablen Anfangsrahmens untersucht, die Rückschlüsse auf die (epochenspezifische) Wahrnehmung von Welt erlaubt. Mit dem textanalytischen Modell des ›Wechselrahmens‹ und der detaillierten Betrachtung paratextueller Elemente eröffnet die Studie neue Perspektiven auf den Erzählanfang als integralen Bestandteil des mittelalterlichen Romans. [less ▲]

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See detailDer wechselseitige Einfluss von Stereotypizität und Textkohärenz auf das Verstehen von Personbeschreibungen
Renaud, Dagmar; Krolak-Schwerdt, Sabine UL; Wintermantel, Margret

Scientific Conference (2004, September)

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See detailWechselwirkungen runder Düsenfreistrahlen mit ebenen Wänden bei verschiedenen Auftreffwinkeln
Richter, Frank; Michael, Mark UL; Leder, Alfred et al

in Leder, A.; Brede, B.; Hüttmann, F. (Eds.) et al Proceedings der 15.GALA-Fachtagung “Lasermethoden in der Strömungsmesstechnik“ (2007)

Die Ausbreitung eines runden Düsenfreistrahls bei verschiedenen Auftreffwinkeln auf eine ebene Wand wird in einem großen Wasserbecken experimentell untersucht. Die Wechsel- wirkungen zwischen Freistrahl ... [more ▼]

Die Ausbreitung eines runden Düsenfreistrahls bei verschiedenen Auftreffwinkeln auf eine ebene Wand wird in einem großen Wasserbecken experimentell untersucht. Die Wechsel- wirkungen zwischen Freistrahl und Wand werden bei den unterschiedlichen Konfigurationen anhand des mit einer tauchbaren 3D-LDA-Sonde gemessenen Strömungsfeldes charakteri- siert. Das radiale Ausbreitungsverhalten sowie der Volumenstrom über die Strahlquer- schnitte stehen dabei im Mittelpunkt der Auswertung. [less ▲]

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See detailWedge-shaped layers from porous silicon: the basics of laterally graded interference filters
Bohn, H. G.; Marso, Michel UL

in Physica Status Solidi A. Applied Research (2005), 202(8), 1437-1442

The process of making laterally graded interference filters has been reanalyzed. A simple and consistent picture arises if one applies a constant electric field perpendicular to the etch current instead ... [more ▼]

The process of making laterally graded interference filters has been reanalyzed. A simple and consistent picture arises if one applies a constant electric field perpendicular to the etch current instead of a constant current. The system is quantitatively modeled by means of a pure ohmic equivalent circuit model. [less ▲]

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