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1.
We explain the rise and decline of regional clusters of creativity over time. We argue that this dynamic is the result of the interplay of individually rational decision-making processes with collective externalities of unplanned social encounters; migration to particular places at particular times interacts with a preference to engage with similar others. This interplay leads to the rise and subsequent decline of opportunities for encounters between people who operate in different domains, a basic requirement for radical innovative change. The consequent decline of formerly innovative regions creates opportunities for new innovative regions to emerge. We test this theory using three independently curated datasets. The first includes the geocoded places and years of the births and deaths of 124,860 notable individuals who lived in Europe between 1000 and 1900 CE, used to measure opportunities for domain-diverse encounters in regions and regions’ time-varying attractiveness in global mobility networks. The second and third datasets consist of the geocoded locations and founding years of 3,165 Catholic monasteries and of 16,596 publishing houses. We use these organizational innovations as robust, independent indicators for a region's capacity to foster incremental and radical change. Our paper aims to open a broader social network perspective on the rise and decline of regional clusters of creativity over time. 相似文献
2.
Ricarda Albrecht Marko Neumann Malte Jansen Michael Becker Kai Maaz Jürgen Baumert 《Zeitschrift für Erziehungswissenschaft》2018,21(4):839-865
This study focuses on students who change from the academic to the non-academic school track after grade 7 (probationary year) in Berlin. We examined which individual student characteristics (e.?g., performance, school biography, family background) predict school change after the probationary year. We were particularly interested as to whether there are secondary effects of social background, after controlling for differences in performance. Our analyses were based on data from a study which included a whole cohort of school track changers (N?=?754) who were compared with students that remained at the academic track (N?=?1470). In order to predict the change of school type, multivariate logistic regression analyses were performed. Results revealed significant differences between both groups regarding all observed characteristics. Performance-related characteristics were the best predictors of track change. After controlling for these characteristics, no further significant effects for other predictors were observable (i.?e., no secondary effects of social background were present). 相似文献
3.
Abstract The objectives of the study were to analyse game interruptions of league soccer in detail and the tactical use of game interruptions. Sixteen matches of a German first league soccer team were observed. An observational system was designed to assess interruption types, score, duration of interruption, location of interruption, time of interruption and number of occurrences. Results showed that there is an average of 108 interruptions per match. Throw-ins (40) and free kicks (33) were most frequent. Goal kicks (17), corner kicks (10), substitutions (4), and kick offs (3) occurred less often. Drop balls, penalties, and injuries occurred least often. For 38% of the total match time observed, matches were halted. The mean duration of running and interrupted match parts were 32.1 s and 18.7 s, respectively. The analysis showed significant differences concerning the influence of the location of interruption, score, and time of interruption on the duration of different interruption types (P < 0.05). The results of the study showed the tactical use of game interruptions during league soccer matches, e.g. goal kicks of the leading team take longer towards the end of the match. Examining game interruptions has turned out to be a valuable source of information adding to our knowledge of soccer. We have shown evidence that the durations of many interruptions serve tactical purposes, a well-known hypothesis in practice. 相似文献
4.
This paper uses the introduction of tuition fees in seven of the sixteen German states in 2007 as a natural experiment to identify the effects of tuition prices on enrollment probabilities. Based on information on enrollment decisions of the entire population of high-school graduates between 2002 and 2008, I find a negative effect of tuition fees on enrollment behavior. The effect is larger than in existing studies for European countries, but of a similar magnitude as effects identified with U.S. data. A potential spill-over effect of the policy intervention to the comparison group is accounted for by using the estimation results to calibrate a structural model of the enrollment decision. 相似文献
5.
Franziska D. Koch Andrea Dirsch-Weigand Malte Awolin Rebecca J. Pinkelman Manfred J. Hampe 《European Journal of Engineering Education》2017,42(1):17-31
ABSTRACTIn order to increase student commitment from the beginning of students’ university careers, the Technische Universität Darmstadt has introduced interdisciplinary study projects involving first-year students from the engineering, natural, social and history, economics and/or human sciences departments. The didactic concept includes sophisticated task design, individual responsibility and a differentiated support system. Using a self-determination theory framework, this study examined the effects of the projects based on survey findings from two projects with more than 1000 students. The results showed that the projects were successful in fulfilling students’ basic psychological needs and in promoting students’ academic engagement. Basic psychological needs were found to be significant predictors of academic engagement. These findings suggest that interdisciplinary study projects can potentially contribute to improving higher education as they fulfil students’ basic psychological needs for competence, relatedness and autonomy and enhance students’ academic engagement. 相似文献
6.
Malte Schwinger Ricarda Steinmayr Birgit Spinath 《Learning and individual differences》2012,22(3):269-279
The self-regulation of motivation represents a key feature of self-regulated learning. Recent studies have documented that students use a variety of strategies to sustain their learning motivation and that most of these strategies have positive effects. However, less is known about how students integrate the various motivational strategies into an individual motivational regulation profile and which kind of profiles are most adaptive with respect to enhanced effort and persistence. To shed more light on this issue, we examined the motivational regulation profiles within two samples of German high-school and college students. In Study 1 (N = 231 11th and 12th grade students), latent profile analysis revealed five subgroups of students holding different motivational regulation profiles. In Study 2 (N = 600 college students), the five class solution was replicated with slight changes in the nature of the profiles. In both studies, profiles with a higher overall level of motivational strategy use were associated with a higher level of effort and achievement. Regarding differences in profile shape, results indicated that profiles emphasizing mastery and/or performance-approach self-talk were most adaptive. Implications of the findings for future research on motivational regulation are discussed. 相似文献
7.
Malte Bödeker Jens Bucksch Birgit Wallmann-Sperlich 《Measurement in physical education and exercise science》2018,22(1):61-69
The Neighborhood Physical Activity Questionnaire allows to assess physical activity within and outside the neighborhood. Study objectives were to examine the criterion-related validity and health/functioning associations of Neighborhood Physical Activity Questionnaire-derived physical activity in German older adults. A total of 107 adults aged ≥60 years completed the Neighborhood Physical Activity Questionnaire and Short Form 12 Health Survey. A subsample of 58 participants wore piezoelectric pedometers for 7 consecutive days. Rank correlation coefficients (ρ) along with 95% confidence intervals (CIs) were computed for the criterion-related validity and health/functioning associations of single Neighborhood Physical Activity Questionnaire modules and total physical activity. Criterion-related validity was moderate (ρ ≤ .60) for total physical activity, total walking, and neighborhood walking, but low (ρ ≤ .40) for walking outside the neighborhood. Health/functioning associations were moderate for recreation walking and low for total physical activity, total walking, and walking within as well as outside the neighborhood. The study provides low-to-moderate validity evidence of Neighborhood Physical Activity Questionnaire-derived physical activity in older adults. 相似文献
8.
This study examined the longitudinal trajectories of achievement goal profiles in mathematics from third to seventh grade in a sample of 302 German students. Latent profile analyses were conducted separately for each school year and revealed three subgroups of students with distinct goal profiles labeled high multiple goals, moderate multiple goals, and primarily mastery-oriented. Only about one third of the students held the same goal profile across all school years. The amount of students pursuing moderate multiple goals increased over time, which supplements previous findings and theorizing about an ongoing differentiation of achievement goals during early adolescence. There were remarkably few differences in educational outcomes (interest, effort, achievement) between students from distinct goal profile groups. However, high multiple goal students showed the lowest test scores in sixth and seventh grade. Moreover, if students showed low performance during one school year, they were more likely to adopt a high multiple goals profile in the following year. Results are discussed in relation to individual cognitive developments, changes in school environments, and special characteristics of educational systems. 相似文献
9.
Sperlich B Zinner C Krueger M Wegrzyk J Achtzehn S Holmberg HC 《Journal of sports sciences》2012,30(9):851-858
We test the hypothesis that breathing oxygen-enriched air (F(I)O(2) = 100%) maintains exercise performance and reduces fatigue during intervals of maximal-intensity cycling. Ten well-trained male cyclists (age 25 ± 3 years; peak oxygen uptake 64.8 ± 6.2 ml · kg(-1) · min(-1); mean ± s) were exposed to either hyperoxic or normoxic air during the 6-min intervals between five 30-s sessions of cycling at maximal intensity. The concentrations of lactate and hydrogen ions [H(+)], pH, base excess, oxygen partial pressure, and oxygen saturation in the blood were assessed before and after these sprints. The peak (P = 0.62) and mean power outputs (P = 0.83) with hyperoxic and normoxic air did not differ. The partial pressure of oxygen was 4.2-fold higher after inhaling hyperoxic air, whereas lactate concentration, pH, [H(+)], and base excess (P ≥ 0.17) were not influenced. Perceived exertion towards the end of the 6-min periods after the fourth and fifth sprints (P < 0.05) was lower with hyperoxia than normoxia (P < 0.05). These findings demonstrate that the peak and mean power outputs of athletes performing intervals of maximal-intensity cycling are not improved by inhalation of oxygen-enriched air during recovery. 相似文献
10.
Anne-Marie Elbe Johan Michael Wikman Miky Zheng Malte Nejst Larsen Glen Nielsen Peter Krustrup 《European Journal of Sport Science》2017,17(3):343-350
This study investigates the enjoyment and cohesion of school children participating in a school-based high-intensity physical activity (PA) intervention. Both enjoyment and cohesion have been found to be important factors for adherence to regular physical and sport activity, an important outcome of PA interventions. The sample consisted of 300 pupils (mean age: 9.3 years; 52.7% female) assigned to a team sport intervention, an individual sport intervention, or a control group for 10 months. The Physical Activity Enjoyment Scale and Youth Sport Environment Questionnaire were used to measure enjoyment and cohesion. The Yo-Yo IR1C test determined fitness improvements. Results showed that enjoyment and cohesion (social) measured at the beginning of the intervention significantly predict fitness improvements achieved after 10 months. No differing developmental effects over time could be found in the intervention groups with regard to cohesion and enjoyment when comparing them to the control group. However, enjoyment and cohesion (social) significantly decreased in the groups that performed individual sports. Team sports seem to be more advantageous for the development of enjoyment and cohesion, which are both factors that positively impact the health outcomes of the intervention. 相似文献