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Schmidt S.,Imperial College London | Ilic C.,German Aerospace Center | Ilic C.,German Institute of Aerodynamics and Flow Technology | Schulz V.,University of Trier | And 3 more authors.
AIAA Journal | Year: 2013

Large-scale three-dimensional aerodynamic shape optimization based on the compressible Euler equations is considered. Shape calculus is used to derive an exact surface formulation of the gradients, enabling the computation of shape gradient information for each surface mesh node without having to calculate further mesh sensitivities. Special attention is paid to the applicability to large-scale three dimensional problems like the optimization of an Onera M6 wing or a complete blended-wing-body aircraft. The actual optimization is conducted in a one-shot fashion, in which the tangential Laplace operator is used as a Hessian approximation, thereby also preserving the regularity of the shape. Copyright © 2013 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

Mayer A.-K.,Universitatsring 15 | Peter J.,Universitatsring 15 | Leichner N.,Universitatsring 15 | Krampen G.,Universitatsring 15 | Krampen G.,University of Trier
Communications in Computer and Information Science | Year: 2015

The paper examines whether effects of an adaptable information literacy instruction program are associated with (a) adherence to the recommendations of online learning contents derived from a test of prior knowledge and (b) subjective evaluations of the program. An adaptable blended learning training for German psychology students was evaluated in a study with a pretest-posttest design. N = 64 advanced students completed two tests of scholarly information literacy, an information literacy self-efficacy scale, and an evaluation questionnaire. Participants who worked on more online materials than recommended based on their pretest performance did not differ in their gain scores from participants who exactly followed the recommendations. However, both groups outperformed participants who omitted recommended materials. According to subjective evaluations, the latter participants constitute a “risk group” with low subjective acceptance of online teaching which might need additional support during online learning or alternative forms of instruction. © Springer International Publishing Switzerland 2015.

Birke P.,Universitatsring 15 | Rosman T.,Universitatsring 15 | Mayer A.-K.,Universitatsring 15 | Walter B.,University of Trier
Communications in Computer and Information Science | Year: 2014

In three studies we constructed a standardized test of procedural knowledge about information searching tailored to the domain of computer science, the PIKE-CS (Procedural information literacy knowledge test for computer science students). A skill decomposition was used to identify nine sub skills which can be classified into two broader categories: Development of search strategies and Application of search strategies. Based on the ratings of experts (N=7), a scoring key was developed. In a pilot study the test was administered to a sample of computer science students (N=18). The scale reached an internal consistency (Cronbach's alpha) of α=.78. Finally, the items were administered to N=89 first-year computer science students. The mean difference between subjects with vs. without programming experience in a professional context-which can be interpreted as a proxy for search experience-is significant, pointing to the validity of the test. © Springer International Publishing Switzerland 2014.

Rosman T.,Universitatsring 15 | Mayer A.-K.,Universitatsring 15 | Krampen G.,Universitatsring 15 | Krampen G.,University of Trier
Behaviour and Information Technology | Year: 2015

This article investigates individual factors that determine success and failure in bibliographic database searching. In line with previous research, we hypothesised that the low usability of advanced bibliographic database interfaces (e.g. OvidSP™) would hinder students in implementing their information-seeking knowledge. Furthermore, we assumed high conscientiousness and need for cognitive closure to drive students towards rigidly using such advanced interfaces, even if they overtax them. In a study with 116 psychology undergraduates, 3 types of searchers were identified by means of a cluster analysis: successful database users, unsuccessful database users, and no-database users (e.g. Google Scholar™ searchers). Multiple regression revealed the relationship between information-seeking knowledge and search success to be positive for no-database users and negative for unsuccessful database users: unsuccessful database users do not only have trouble putting their information-seeking knowledge into practice; high information-seeking knowledge even impairs their search success, presumably because it makes them use advanced functions that they are not yet able to master. T-tests revealed that unsuccessful users differ from successful users in terms of higher conscientiousness and need for cognitive closure. In conclusion, our results highlight the importance of enhancing database interface usability and underline the crucial role of practical database instruction. © 2015 Taylor & Francis

Garcia-Castro A.,Linking Data LLC | Garcia-Castro A.,Technical University of Madrid | Barth I.,Universitatsring 15 | Weichselgartner E.,Technical University of Madrid
ACM International Conference Proceeding Series | Year: 2015

In this paper we present the Semantic Enhancement for the Open Journal Systems, SE4OJS, to generate semantically annotated documents. With this tool, we created a knowl-edgebase for psychology, KOBPSY.We have identified struc-tural document elements such as authors, sections, and do-main knowledge about diseases, population, treatments and more. Our corpus of documents comes from PsychOpen. The datasets we are building for each article include i) the RDF description of article metadata, e.g. information on ti-tle, keywords, authors and editors; ii) structural information such as sections, section types, paragraphs, in-text citations; and also, iii) RDF for content and annotations. We are structuring the annotations by using the Annotation Ontol-ogy. Our approach makes it possible to build concept-based queries; we are delivering a exible, reusable and adaptable set of tools for metadata enrichment and semantic process-ing of scientific documents in psychology. © 2015 ACM.

Mustafic M.,University of Zürich | Mustafic M.,Universitatsring 15 | Freund A.M.,University of Zürich
GeroPsych: The Journal of Gerontopsychology and Geriatric Psychiatry | Year: 2012

Two studies demonstrate the usefulness of a newly developed, direct assessment method of subjective conceptualizations of development across adulthood. Results of Study 1 (N = 234, 18-83 years) suggest that older adults anticipate stronger decline in four domains of functioning (subjective well-being, social relationships, cognition, physical functioning) than younger and middle-aged adults. Study 2 (N = 166, 20-85 years) showed that older adults' conceptualizations show less differentiation across domains than those of younger and middle-aged adults'. Results of both studies confirm lifespan notions of multidirectionality (expectations of gains and losses) but also show age-related differences in multidimensionality of developmental conceptions (i.e., differences in expected trajectories between domains). Moreover, results provide evidence that favorable conceptions impact perceived controllability and actual subjective well-being. © 2012 Hogrefe Publishing.

Leichner N.,Universitatsring 15 | Peter J.,Universitatsring 15 | Mayer A.-K.,Universitatsring 15 | Krampen G.,Universitatsring 15
Communications in Computer and Information Science | Year: 2015

This paper reports about the objective and subjective evaluation of a blended learning course to foster information literacy skills of psychology students. The course consists of three modules delivered online and two face-to-face seminars. The evaluation is conducted using a multi-method approach with objective as well as subjective measures: Participants completed an information literacy knowledge test and standardized information search tasks before and after taking the course as well as a feedback questionnaire. A sample of N = 67 undergraduate psychology students (n = 37 experimental group, n = 30 waiting control group) participated in the course. As it was expected, students’ knowledge test scores as well as performance in the search tasks improved markedly during the course. Furthermore, students were satisfied with the course, whereas online learning found better acceptance than face-to-face learning. Results are discussed with regard to the soundness of the evaluation criteria used and to further development of the course. © Springer International Publishing Switzerland 2015.

Dehnhard I.,Universitatsring 15 | Weichselgartner E.,Universitatsring 15 | Krampen G.,Universitatsring 15
Data Science Journal | Year: 2013

Data sharing has gained importance in scientific communities because scientific associations and funding organizations require long term preservation and dissemination of data. To support psychology researchers in data archiving and data sharing, the Leibniz Institute for Psychology Information developed an archiving facility for psychological research data in Germany: PsychData. In this paper we report different types of data requests that were sent to researchers with the aim of building up a sustainable data archive. Resulting response rates were rather low, however, comparable to those published by other authors. Possible reasons for the reluctance of researchers to submit data are discussed.

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