Accuracy of elevation recording using sport watches while walking and running on hilly and flat terrain     

Rahel Ammann  Wolfgang Taube  Fabian Kummer  Thomas Wyss 《Sports Engineering》2016,19(4):283-287

Elevation gain (EG) is a significant contributor to the total workload in many endurance sports. Hence, the aim of this study was to evaluate the accuracy of elevation recording as assessed by popular sport watches. Eighteen participants walked and ran at different speeds in various weather conditions in two terrain types: on a hilly 2490 m course with a total EG of 90 m and on a flat 1200 m outdoor track with 0 m EG. In total, 180 recordings from each sport watch were analyzed and compared according to two processing types: filtered and unfiltered EG data. Compared to the reference values, regarding default settings, on hilly terrain, EG was underestimated by ?3.3 to ?9.8 %, and on flat terrain, EG was overestimated by 0.0–4.8 m per 1200 m. These errors could be reduced to ?3.3 to +0.4 %, when filtering conditions were adjusted according to the terrain. Gait speed (ranging from 1.47 to 4.89 m s^?1) or fluctuations in weather conditions between- or within-trials did not influence EG accuracy. A straightforward comparison between manufacturers is hampered as the filter conditions set by default differ. In conclusion, all devices measure EG adequately; however, the displayed default feedback on EG data is not always the most accurate measurement. Consequently, accuracy in elevation recordings could be increased if users appropriately post-process EG data.  相似文献   

Erratum to: “FearNot!”: a computer-based anti-bullying-programme designed to foster peer intervention     

Natalie Vannini  Sibylle Enz  Maria Sapouna  Dieter Wolke  Scott Watson  Sarah Woods  Kerstin Dautenhahn  Lynne Hall  Ana Paiva  Elisabeth André  Ruth Aylett  Wolfgang Schneider 《European Journal of Psychology of Education - EJPE》2013,28(2):597-598

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High-Ability Grouping: Benefits for Gifted Students’ Achievement Development Without Costs in Academic Self-Concept     

Franzis Preckel  Isabelle Schmidt  Eva Stumpf  Monika Motschenbacher  Katharina Vogl  Vsevolod Scherrer  Wolfgang Schneider 《Child development》2019,90(4):1185-1201

Effects of full-time ability grouping on students’ academic self-concept (ASC) and mathematics achievement were investigated in the first 3 years of secondary school (four waves of measurement; students’ average age at first wave: 10.5 years). Students were primarily from middle and upper class families living in southern Germany. The study sample comprised 148 (60% male) students from 14 gifted classes and 148 (57% male) students from 25 regular classes (matched by propensity score matching). Data analyses involved multilevel and latent growth curve analyses. Findings revealed no evidence for contrast effects of class-average achievement or assimilation effects of class type on students’ ASC. ASC remained stable over time. Students in gifted classes showed higher achievement gains than students in regular classes.  相似文献   

On reliability and robustness of scientometrics indicators based on stochastic models. An evidence-based opinion paper     

Wolfgang Glänzel 《Journal of Informetrics》2010,4(3):313-319

In the present paper we give an overview over the opportunities of probabilistic models in scientometrics. Four examples from different topics are used to shed light on some important aspects of reliability and robustness of indicators based on stochastic models. Limitations and future tasks are discussed as well.  相似文献   

Knowledge about the mind: links between theory of mind and later metamemory   总被引：1，自引：0，他引：1  

Lockl K  Schneider W 《Child development》2007,78(1):148-167

This longitudinal study combined, in a single study, different aspects of children's knowledge about mental phenomena and thus could investigate relations among the development of language, theory of mind, and later metamemory. In total, 183 German children were tested at ages 3, 4, and 5. Each time of testing included a set of theory-of-mind tasks, a battery of language development, and additionally, at Time 3, a set of metamemory questions. The findings demonstrate strong relationships between children's language abilities and their theory of mind (both first- and second-order false beliefs). Moreover, both theory-of-mind and language competencies significantly predicted later metamemory, with their relative contribution changing over time. Language may influence metamemory developmentally both directly and indirectly (through theory of mind).  相似文献   

Die Arbeitsgemeinschaft als partizipative Regulationsform     

Prof. Dr. Wolfgang Seitter 《Zeitschrift für Erziehungswissenschaft》2010,13(3):393-404

This contribution focuses on Alfred Mann’s program of qualitative teaching and learning research within the context of debates on adult education in the 1920s looking for the “right” form of adult learning. Following some brief notes on Mann himself, we will present his programmatic considerations on researching lessons in the Volkshochschule and investigate the interpretive potential of his verbatim lesson documentation on the basis of an extract from a lesson journal. Central to Mann’s planned and partially realized program was the—at the time avant garde and little discussed—link between practiced lessons, empirical foundations and further education based on self-reflection.  相似文献   

An investigation of the need for sign language assessment in deaf education     

Mann W  Prinz PM 《American annals of the deaf》2006,151(3):356-370

The attitudes of educators of the deaf and other professionals in deaf education concerning assessment of the use of American Sign Language (ASL) and other sign systems was investigated. A questionnaire was distributed to teachers in a residential school for the deaf in California. In addition to questions regarding the availability of sign language assessment at their schools, participants responded to items concerning their motivation to use a test for sign language measurement. Of the 100 distributed surveys, 85 were completed and returned. Results showed overwhelming agreement among respondents concerning the importance of sign language assessment, along with the need for tools that appropriately measure signing skills.  相似文献   

Why finding entities in Wikipedia is difficult,sometimes     

Gianluca Demartini  Claudiu S. Firan  Tereza Iofciu  Ralf Krestel  Wolfgang Nejdl 《Information Retrieval》2010,13(5):534-567

Entity Retrieval (ER)—in comparison to classical search—aims at finding individual entities instead of relevant documents. Finding a list of entities requires therefore techniques different to classical search engines. In this paper, we present a model to describe entities more formally and how an ER system can be build on top of it. We compare different approaches designed for finding entities in Wikipedia and report on results using standard test collections. An analysis of entity-centric queries reveals different aspects and problems related to ER and shows limitations of current systems performing ER with Wikipedia. It also indicates which approaches are suitable for which kinds of queries.  相似文献   

Consequences of media information uptake and deliberation: focus groups' symbolic coping with synthetic biology     

Kronberger N  Holtz P  Wagner W 《Public understanding of science (Bristol, England)》2012,21(2):174-187

Whenever a new, potentially controversial technology enters public awareness, stakeholders suggest that education and public engagement are needed to ensure public support. Both theoretical and empirical analyses suggest, however, that more information and more deliberation per se will not make people more supportive. Rather, taking into account the functions of public sense-making processes, attitude polarisation is to be expected. In a real-world experiment, this study on synthetic biology investigated the effect of information uptake and deliberation on opinion certainty and opinion valence in natural groups. The results suggest (a) that biotechnology represents an important anchor for sense-making processes of synthetic biology, (b) that real-world information uptake and deliberation make people feel more certain about their opinions, and (c) that group attitudes are likely to polarise over the course of deliberation if the issue is important to the groups.  相似文献   

In memoriam Richard Meister     

Wolfgang Brezinka 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1964,10(3):332-333

Ohne Zusammenfassung  相似文献