Google Scholar and Web of Science: Examining gender differences in citation coverage across five scientific disciplines     

Jens Peter Andersen  Mathias Wullum Nielsen 《Journal of Informetrics》2018,12(3):950-959

Many studies demonstrate differences in the coverage of citing publications in Google Scholar (GS) and Web of Science (WoS). Here, we examine to what extent citation data from the two databases reflect the scholarly impact of women and men differently. Our conjecture is that WoS carries an indirect gender bias in its selection criteria for citation sources that GS avoids due to criteria that are more inclusive. Using a sample of 1250 U.S. researchers in Sociology, Political Science, Economics, Cardiology and Chemistry, we examine gender differences in the average citation coverage of the two databases. We also calculate database-specific h-indices for all authors in the sample. In repeated simulations of hiring scenarios, we use these indices to examine whether women's appointment rates increase if hiring decisions rely on data from GS in lieu of WoS. We find no systematic gender differences in the citation coverage of the two databases. Further, our results indicate marginal to non-existing effects of database selection on women's success-rates in the simulations. In line with the existing literature, we find the citation coverage in WoS to be largest in Cardiology and Chemistry and smallest in Political Science and Sociology. The concordance between author-based h-indices measured by GS and WoS is largest for Chemistry followed by Cardiology, Political Science, Sociology and Economics.  相似文献   

Psychometric Properties of a Parental Questionnaire for Assessing Correlates of Toddlers’ Physical Activity and Sedentary Behavior     

Valerie Carson  Kylie D. Hesketh  Ryan E. Rhodes  Christina Rinaldi  Wendy Rodgers  John C. Spence 《Measurement in physical education and exercise science》2017,21(4):190-200

This study examined the psychometric properties of a questionnaire developed with the guidance of the socialization model of child behaviour to understand modifiable correlates of toddlers’ physical activity and sedentary behaviour. Findings are based on 118 parents (33.7 ± 4.9 years; 86% female) of toddlers (19.3 ± 2.7 months; 48% female) from Edmonton, Canada in The Parents’ Role in Establishing healthy Physical activity and Sedentary behaviour habits study (PREPS). The PREPS questionnaire encompassed 21 variables across the constructs of the socialization model of child behaviour. Of the nine variables assessed for internal consistency reliability, eight had good (α ≥ 0.70) reliability. Of the 15 continuous variables assessed for 1-week test–retest reliability, 10 had moderate (intra-class correlation = 0.50–0.74) and 5 had good (intra-class correlation ≥ 0.75) reliability. Of the six categorical variables assessed for 1-week test–retest reliability, two had fair (К = 0.21–0.40), one had moderate (К = 0.41–0.60), one had substantial (К = 0.61–0.80), and two had almost perfect (К = 0.81–1.00) reliability. Of the 12 sedentary behaviour variables assessed for convergent validity, 7 were significantly correlated with children’s screen time, of which three were small (r ≤ 0.29), two were medium (r = 0.30–0.49), and two were large (r ≥ 0.50) effect sizes.  相似文献   

Learning by Ostension: Thomas Kuhn on Science Education     

Andersen  Hanne 《Science & Education》2000,9(1-2):91-106

Significant claims about science education form an integral part of Thomas Kuhn's philosophy. Since the late 1950s, when Kuhn started wrestling with the ideas of normal research and convergent thought, the nature of science education has played an important role in his argument. Hence, the nature of science education is an essential aspect of the phase-model of scientific development developed in his famous The Structure of Scientific Revolutions, just as his later work on categories and conceptual structures takes its starting point in the transmission rather than the creation of concepts and categories.  相似文献   

Determining the level of inquiry in teachers' questions     

George T. Ladd  Hans O. Andersen 《科学教学研究杂志》1970,7(4):395-400

The purpose of this investigation was to determine if an instrument, originally designed to classify levels of teachers' questions on the basis of logical operations, could be utilized to measure the level of inquiry present in a classroom discussion and to determine if the inquiry questioning behavior of the teacher influenced student achievement. The results of the study show that the modified classification scheme could accurately and reliably measure the inquiry level of teachers' classroom questions. The data also indicated that teachers who ask a greater proportion of high inquiry questions cause a greater change in students as measured by an achievement examination.  相似文献   

Effects of modeling on preservice science teachers during ISCS microteaching sessions     

Richard J. Rezba  Hans O. Andersen 《科学教学研究杂志》1976,13(1):13-18

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Materials-to-develop-with: The making of a makerspace     

Anna Keune  Kylie Peppler 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(1):280-293

Celebrating hands-on making and technological inventiveness, the Maker Movement promotes the popularity of new makerspaces: learning environments filled with diverse materials for youth’s creative projects. Described as “constructionist learning environments,” makerspaces can be challenging to design because materials require substantial budgetary investments. Because the practical demands of space and cost often dominate decisions concerning a new makerspace, less attention is paid to how the choice of materials inadvertently limits who uses the space, how learning happens, or how materials in a space will interact and intra-act over time. Building on theories of constructionism and relational materialism to analyze and theorize learning in makerspaces, we take a case-based approach to illustrate the co-development of 3D printing materials, youth and educational programs at an out-of-school makerspace. In the process, we demonstrate the need to rethink the role of materials in human development and educational design. We introduce the concept of materials-to-develop-with to explain how objects can be internalized and drive the development of spaces, people and learning opportunities.  相似文献   

Social,emotional and intercultural competencies: a literature review with a particular focus on the school staff     

Birgitte Lund Nielsen  Hilmar Dyrborg Laursen  Lise Andersen Reol  Helle Jensen  Ana Kozina  Masa Vidmar 《欧洲师范教育杂志》2019,42(3):410-428

Framed by the EU-project Hand in Hand focusing on Social, Emotional and Intercultural (SEI) competencies among students and school staff the paper discusses implementation and professional competencies based on a literature review. Five themes were identified: 1) Intercultural/transcultural competency is not often referred to in the same research as social-emotional learning, though socio-emotional aspects appear to be `in the core´, 2) it is crucial to be aware of agency among school staff in a SEI-implementation, 3) successful implementation is about more than the activities in the specific program, it is rather about elements in synergy and professional learning over time, 4) the subtle balance between adaptation and fidelity might best be addressed in an adaptive curriculum emphasizing active ingredients, and 5) this is a field with many intervention studies, but it is urgent to consider if the psychometric measures are sufficiently sensitive to catch the subtle changes related to SEI-competencies.  相似文献   

The “Micro-Lab”: An Introduction to Group Process     

Dale G. Andersen  William A. Cabianca 《Counselor Education & Supervision》1970,9(4):299-300

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Optimizing segmental movement in the jumping header in soccer     

Kristensen LB  Andersen TB  Sørensen H 《Sports biomechanics / International Society of Biomechanics in Sports》2004,3(2):195-208

This study looks at segmental movements in the jumping header from an optimization viewpoint. Investigations on the header so far have focused on head restriction in the movement but have not clarified how and to what extent body segments influence the performance of the skill. In the present study a biomechanical model was used to analyze the jumping header in simulated competition to give a clear picture of an optimized header. Skilled soccer players headed balls at speeds of 13 m x s(-1) the results indicated that the head moves as a free non-restricted segment in the jumping header and should be allowed to do so, even though much soccer literature says otherwise to prevent injuries. The arm movement showed individual characteristics and gave no general advantages in optimizing ball speed after impact in the header The movement of the legs was, on the other hand, the single most important factor in the skill. Therefore, coaches and players shouldfocus on developing muscle strength in the stomach, back and pelvis and should put no restrictions on head and arm movement to optimize the jumping header.  相似文献   

An Entrance for the Uninterested: Who Watches Soft News and How Does It Affect Their Political Participation?     

Kim Andersen 《Mass Communication and Society》2019,22(4):487-507

As soft news shows in television present politics in an entertaining format, they are likely to attract and grab the attention of people who do not have a high interest in politics. Consequently, soft news might mobilize these citizens to engage in politics. This study tests this potential by using a 2-wave panel survey among a national sample of voters (N = 2,680) collected in relation to the 2015 National Election in Denmark. The results show that people with lower political interest were indeed more likely to increase their use of soft news during the election campaign and that, as a consequence, these low-motivated people also increased their passive participation, such as seeking additional information about the election. Further, the results show that this type of passive participation is likely to function as a stepping-stone to active forms of participation, such as attending political events or contacting politicians.  相似文献