![]() ; ; Brust, Matthias R. ![]() in Proceedings of Global Congress on Engineering and Technology Education (GCETE 2005) (2005) Detailed reference viewed: 54 (3 UL)![]() ![]() Pit-Ten Cate, Ineke ![]() ![]() ![]() Scientific Conference (2013, March) Detailed reference viewed: 45 (0 UL)![]() Aminnia, Navid ![]() ![]() ![]() in Scipedia.com (2022, December) Powder-based additive manufacturing technologies, specifically selective laser melting, are challenging to model due to the complex, interrelated physical phenomena that are present on multiple spatial ... [more ▼] Powder-based additive manufacturing technologies, specifically selective laser melting, are challenging to model due to the complex, interrelated physical phenomena that are present on multiple spatial scales, during the process. A key element of such models will be the detailed simulation of flow and heat transfer throughout the melt pool that is formed when the powder particles melt. Due to the high temperature gradients that are rised inside the melt pool, Marangoni force plays a key role in governing the flows inside the melt pool and deciding its shape and dimensions[1]. On the other hand the mass and heat transfer between the melt and the powder also has a signifacnt role in shaping the melt pool at the edges. In this study we modified an OpenFOAM solver(icoReactingMultiphaseInterFoam) cou- pled with an in-house developed DEM code known as eXtended Discrete Element Method or XDEM which models the dynamics and thermodynamics of the particles[2]. By adding the Marangoni force to the momentum equation and also defining a laser model as a boundary Condition for Liquid-Gas Interface, the solver is capable of modeling selective laser melting process from the moment of particle melting to the completion of the so- solidified track. The coupled solver was validated with an ice-packed bed melting case and was used to simulate a multi-track selective laser melting process. [less ▲] Detailed reference viewed: 57 (6 UL)![]() Borgue, Olivia ![]() ![]() in Proceedings of the International Astronautical Congress, IAC2 (2022) The miniaturization of electronic components enables major reduction of spacecraft size and mass, as is the caseof CubeSats, PocketQubes, and Femtosats, which offer shorter development time and costs, in ... [more ▼] The miniaturization of electronic components enables major reduction of spacecraft size and mass, as is the caseof CubeSats, PocketQubes, and Femtosats, which offer shorter development time and costs, in comparison withtraditionally larger satellites. However, these miniaturized satellites still require a considerable effort in terms of timeand investment (several years of development, and costs around 105-106 EUR for CubeSats). More recently, an evensmaller class of spacecraft, the Chipsats has been introduced. Chipsats are microchip-shaped spacecraft with massesranging from a few grams to 10s of grams. At the lower end of the mass range (1-10 grams), they belong to the classof Attosats. Due to their small size, Attosats enable unprecedented low costs, agile development and potential forswarm missions of distributed and fractioned systems for applications such as planetary observation. However,despite their benefits there have not been many initiatives to develop Attosat systems. In this article, the developmentof a satellite system of three 10-grams satellites is presented. The three satellites work together to achieve thecommon goal of studying Earth’s atmospheric environment, conforming a distributed system. Moreover, as thedifferent satellites are designed to perform different functions, they conform a fractionated system as well: onesatellite acts as a communication node transmitting data to ground stations, while the two other satellites haveenvironment sampling capabilities. Visual intersatellite communication capabilities ensure data transmission amongthe satellites. The presented system is meant as a technology demonstration project for future distributed andfragmented satellite swarm systems for atmospheric planetary exploration. The Attosats are scheduled for launch onOctober 2023 on board of a Momentus spacecraft [less ▲] Detailed reference viewed: 49 (19 UL)![]() ; ; Peters, Bernhard ![]() in International Journal of Environment and Pollution (2012) The use of integrated assessment models, in air quality policy, which combines atmospheric models with others from different fields, raises the need of developing specific air quality modelling concepts ... [more ▼] The use of integrated assessment models, in air quality policy, which combines atmospheric models with others from different fields, raises the need of developing specific air quality modelling concepts. The air quality model, AUSTAL2000-AYLTP uses an adapted version of AUSTAL2000 model to calculate transport coupled with a fast photochemical module. Two approaches are compared: one using a look-up table and the other using a coupled box model. The lookup table has been built using the OZIPR model by simulating a large set of possible combinations of meteorological variables and precursor concentrations. The second approach consists of coupling the Lagrangian model AUSTAL2000 with the OZIPR box model. In both approaches the photochemistry is included in the mode by using a quasi-linear reaction rates coefficient which is used to affect the mass of the Lagrangian particles. We discuss the differences and the suitability of the two model versions, through exploring CPU time flexibility, applicability and accuracy. [less ▲] Detailed reference viewed: 118 (3 UL)![]() ; Huemer, Birgit ![]() in Journal of Academic Writing (2015), 5(1), 29-41 Detailed reference viewed: 166 (8 UL)![]() Huemer, Birgit ![]() in Journal of Academic Writing (2015), 5(1), 29-41 The factual dominance of English as Lingua Franca of the international scientific community continues to increase in most disciplines. Univesrity students, lecturers and researchers are more and more ... [more ▼] The factual dominance of English as Lingua Franca of the international scientific community continues to increase in most disciplines. Univesrity students, lecturers and researchers are more and more commonly required to acquire English for academic purposes. Meanwhile, linguistic research into the similarities and differences between academic English and its German, Italian or other counterparts has been conducted. However, no comprehensive study has yet dealt with the specific problems faced by German-speaking academics and students acquiring English for academic purposes. It is in this context that this article presents an ongoing research project designed to address that gap. It concerns the lack or partial lack of equivalent linguistic means between the German and the English common language of academia. The common language of academia is, by definition, used across the disciplines and contains or realises fixed, language- and culture-specific conceptions of what actually constitutes 'science' or 'academia'. It is largely based on but differs from language use in everyday contexts, thus posing significant challenges for students even in their first language. In this article, we address the challenge of achieving not only a functional comparison of the common language of academia in English and German, but of complementing the underlying inventory and analysis of each. Following a discussion of previous work, we detail our research design and criteria for the comparative analysis of the common language of academia in English and German, as well as some prelimiary results of the project. The findings of our project will ultimately lead to a German-English dictionary for the common language of academia designed to support both students and academics with understanding and participating in international scientific communities with different linguistic backgrounds. [less ▲] Detailed reference viewed: 178 (5 UL)![]() ![]() Huemer, Birgit ![]() Scientific Conference (2013, June 27) Detailed reference viewed: 45 (0 UL)![]() ![]() Hornung, Caroline ![]() ![]() ![]() Poster (2014, April) Detailed reference viewed: 130 (47 UL)![]() ![]() Usanova, Ksenia ![]() Scientific Conference (2021, July 29) Detailed reference viewed: 184 (1 UL)![]() ![]() Reckinger, Rachel ![]() in Blogowski, Alain; Lagrange, Louis; Valceschini, Egizio (Eds.) Actes du colloque international SFER (Société Français d’Economie Rurale) : Au nom de la qualité. Quelle(s) qualité(s) demain, pour quelle(s) demande(s)? (2005, October) ‘Exigence de qualité’ et ‘vin’ sont devenus presque des synonymes pour quiconque veut acheter une bouteille. Peu d’autres composants que le vin ne sont convoqués pour juger de la qualité d’ensemble d’un ... [more ▼] ‘Exigence de qualité’ et ‘vin’ sont devenus presque des synonymes pour quiconque veut acheter une bouteille. Peu d’autres composants que le vin ne sont convoqués pour juger de la qualité d’ensemble d’un repas, indiquant un statut similaire du commentaire sur la ‘qualité individuelle’ du vin servi et sur le ‘talent d’ensemble’ de la personne qui a conçu et préparé le repas. Mais qui dit ‘juger’, dit ‘communiquer’, ‘donner un avis’ tant soit peu argumenté – chose délicate, étant donné que les discours sur le vin se sont peu à peu complexifiés et multipliés . D’où le succès public des cours du soir en œnologie, censés enseigner le discernement sur la qualité, si utile lors de la consommation du vin. Mais peut-on parler d’apprentissage de la qualité ? La consommation de vin peut être schématisée en trois étapes actives – en omettant ici l’étape passive de l’encavement domestique : l’achat après une sélection, le service (en général combiné à un repas), et le fait de boire le vin. Quand la filière professionnelle parle de la nécessité d’ « éducation du consommateur », elle fait référence surtout à un aiguisement sensoriel, permettant d’affiner la perception au nez et en bouche de ce produit très nuancé, dans le double but de faire valoir la qualité intrinsèque de vins élaborés dans cet esprit et, en conséquence, d’infléchir les comportements de consommation, plus conscients car formés et informés, dans cette direction . Or, dans la verbalisation de personnes fréquentant des cours du soir en œnologie, c’est précisément cette troisième étape de la consommation qui est majoritairement présentée comme non problématisée. Ce n’est pas la perception sensorielle de la qualité qui soulève des questions aux yeux des buveurs, mais la sélection lors de l’achat, ainsi que le service de vins de qualité, combinés de manière avantageuse à un plat – c’est-à-dire de sorte que la qualité initiale du vin soit manifeste à tous les convives. De plus, le service devient seulement « difficile » quand il a lieu dans une situation publique : avec des invités ou au restaurant – alors que le choix du vin à apprécier en famille se fait « juste comme ça », de lui-même, sans élaboration de discours. Paraît ainsi une distinction opératoire entre ‘qualité en sphère privée’ et ‘qualité en sphère publique’, plus normée et du coup plus subtile à mettre en œuvre. En conformité avec les attentes générales de la filière professionnelle, les œnologues chargé(e)s des cours du soir en œnologie, se positionnant « dans le sens du terroir », entendent – chacun dans son style d’enseignement individuel – à la fois construire et consolider des compétences cognitives et développer des savoir-faire sensoriels. Afin d’atteindre l’objectif consensuel d’une plus grande autonomie « du consommateur », capable de juger et de départir sans aide extérieure, ce sont les capacités de perception et d’évaluation sensorielle de la qualité qui constituent l’outil ultime. Tandis que les connaissances sur le contexte et le mode de production du vin, constituent un savoir en toile de fond, utile seulement dans ses combinaisons pratiques avec des expériences gustatives directes. Mais les personnes fréquentant ces cours sont surtout attentives à l’exposé oral fait par l’œnologue et voient la dégustation (composée de vins aux propriétés sensorielles ‘didactiques’ et ‘démonstratives’, car toujours « typiques » de leur origine) comme un simple agrément. Les questions qui reviennent le plus souvent sont celles de ‘recettes’ toutes faites sur l’achat et le service des vins, dans un désir de transposabilité à l’identique. Les œnologues résistent à ces pressions en prônant l’entraînement sensoriel (« l’on ne peut que recommander aux gens de goûter »), aboutissant à des opinions individuelles – ce dans un cadre qualitatif maîtrisé, tel qu’il a été présenté dans le cours : « après le cours, les gens ont une possibilité de trouver si un vin est bon ou pas bon ». Au terme de cette interaction entre ‘consommateur apprenant’, désireux de se retrouver dans la jungle des vins espérés de qualité, et les chargé(e)s de cours, on pourrait parler de « malentendu culturel » (Pedler, 2004 : 127) diffus. Comme dans d’autres domaines culturels, effectivement « rien n’indique qu’il existe une adéquation entre offres et réceptions cultivées » (idem : 130). Entre le fait d’entendre ‘dire la qualité’ (par l’œnologue) et l’apprendre dans un cours (pour soi), les médiations semblent incertaines, et les inhibitions ne se lèvent qu’à des conditions individuelles particulières. Notamment la famille et la curiosité affranchie sont des incitateurs puissants pour dépasser la renonciation majoritaire d’aller au bout du voyage entamé. Ces facteurs permettent d’aboutir du « j’aime » ou « je n’aime pas » vers un plaisir de découverte, d’expérimentation et d’énonciation du ‘pourquoi’ de la qualité. [less ▲] Detailed reference viewed: 82 (0 UL)![]() ; Vlassis, Joëlle ![]() Scientific Conference (2016, July) Detailed reference viewed: 54 (0 UL)![]() Demonty, Isabelle ![]() ![]() Scientific Conference (2016) Detailed reference viewed: 87 (13 UL)![]() Graf, Lukas ![]() in AICGS Transatlantic Perspectives (2015) Currently, many countries are experiencing a strong renewed interest in work-based training. When it comes to discussions in this field, American policymakers usually identify dual apprenticeship training ... [more ▼] Currently, many countries are experiencing a strong renewed interest in work-based training. When it comes to discussions in this field, American policymakers usually identify dual apprenticeship training as the "crown jewel" of Germany's admired skill formation system. In turn, their colleagues from Germany frequently travel to the U.S. to inform about the merits of the German apprenticeship model. However, what is often overlooked is that dual apprenticeship training at the secondary level is no longer the only way in which advanced work-based training is offered in Germany. Due to structural changes, such as the shift to the service and knowledge economy and the increased flexibility of labor markets, employers as well as individuals increasingly demand higher-level academic competences. As a consequence, so-called dual study programs in Germany have massively expanded. Dual study programs are apprenticeships offered at the higher education level and they have begun to attract high school graduates with excellent grades. In fact, in terms of recruiting talent, they can compete with prestigious German research universities for talented youth. Yet in the U.S. there are few programs that offer such a combination. Apprenticeships in the U.S. case are mainly organized through private providers or community colleges at the post-secondary level. As Lerman (2014) emphasizes, "Unlike programs in Austria, Germany, and Switzerland, the apprenticeship system in the U.S. is almost entirely divorced from high schools […]." However, community colleges are usually considered a higher education pathway mainly for those who do not manage to gain access to four-year colleges (universities). In this essay I argue that the U.S. skill formation system might profit from systematically introducing programs similar to German dual study programs. Conversely, the U.S. approach to work-based higher education offers inspiration for policymakers in Germany. Thus, for example, while German higher education still functions as a rather elitist system, community colleges are designed to make higher education accessible, especially for non-traditional and disadvantaged students. It follows that the two countries can mutually learn from each other regarding the development of new pathways of advanced work-based higher education. In the following I discuss German dual study programs and U.S. community colleges as well as co-operative (co-op) study programs. Then I compare the German and the U.S. approaches to show how each of them offers distinct comparative advantages. [less ▲] Detailed reference viewed: 555 (8 UL)![]() ; Markovich, Réka ![]() ![]() in Journal of Zhejiang University (2020) Detailed reference viewed: 71 (2 UL)![]() Vlassis, Joëlle ![]() ![]() Scientific Conference (2019) Detailed reference viewed: 79 (1 UL)![]() Fridgen, Gilbert ![]() in 1st ERCIM Blockchain Workshop 2018 (2018) The public sector presents several promising applications for blockchain technology. Global organizations and innovative ministries in countries such as Dubai, Sweden, Finland, the Netherlands, and ... [more ▼] The public sector presents several promising applications for blockchain technology. Global organizations and innovative ministries in countries such as Dubai, Sweden, Finland, the Netherlands, and Germany have recognized these potentials and have initiated projects to evaluate the adoption of blockchain technology. As these projects can have a far-reaching impact on crucial government services and processes, they should involve a particularly thorough evaluation. In this paper, we provide insights into the development of a framework to support such an evaluation for the German asylum process. We built this framework evolutionarily together with the Federal Office for Migration and Refugees. Its final version consists of three levels and eighteen categories of evaluation criteria across the technical, functional and legal domains and allows specifying use-case specific key performance indicators or knockout criteria. [less ▲] Detailed reference viewed: 43 (4 UL)![]() Sunnen, Patrick ![]() ![]() ![]() in Stephanidis, Constantine; Antona, Margherita (Eds.) HCI International 2020 - Posters (2020, July) Constructive collaboration can be a difficult matter. For this reason, we are implementing and studying an interactive-tabletop-mediated activity that aims at inducing collaboration among participants ... [more ▼] Constructive collaboration can be a difficult matter. For this reason, we are implementing and studying an interactive-tabletop-mediated activity that aims at inducing collaboration among participants. The resulting activity ‘Orbitia’ is designed as a serious game. Participants are asked to act as a space- mining crew, which has to collect minerals with a rover and rely on a camera- drone for reconnaissance, while keeping the rover out of harm and managing limited resources. In this paper we provide an account of how we designed Orbitia’s pedagogical structuring by relying on the Johnsons’ cooperative learning approach whose fundamental concept is “positive interdependence”. More particularly, we show how we worked on resource, role and task inter- dependence to design three collaboration-inducing ‘flagship’ devices: the rover- steering-device (RSD), the item-locating-device (ILD) and the responsibility- activating-device (RAD). [less ▲] Detailed reference viewed: 97 (3 UL)![]() Schiltz, Jang ![]() in Stemmler, Mark; Lautsch, Erwin; Martinke, Dirk (Eds.) Configural Frequency Analysis (CFA) and other non-parametrical methods: Gustav A. Lienert Memorial Issue. (2008) The theoretical basis underlying the construction of a CAT is summed up and the item response theory explained. In comparison with a classical paper-and-pencil test, the characteristics and the advantages ... [more ▼] The theoretical basis underlying the construction of a CAT is summed up and the item response theory explained. In comparison with a classical paper-and-pencil test, the characteristics and the advantages of a CAT are exposed. After performing a thorough analysis of the data, we developed a CAT based on the responses of 3590 children to a standardized mathematical test. The software presents a great amount of flexibility and allows treating multiple-choice items, as well as items with free response options and graphical items. Some results of an empirical evaluating study are presented. We showed that qualities of power, flexibility and economy of time of the CAT do not imply the loss of the classical psychometric properties of a paper-and-pencil test; we analyze the carry-over effect between the computerized and the paper-and-pencil test situation and as well as the relations between mathematical skills and general cognitive abilities. [less ▲] Detailed reference viewed: 23 (1 UL)![]() Schiltz, Jang ![]() Scientific Conference (2006, June 15) Detailed reference viewed: 43 (0 UL) |
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