Startup size and the mechanisms of external learning: increasing opportunity and decreasing ability?

An important area of investigation in the field of entrepreneurship examines how people and organizations exploit technological opportunities. Prior research suggests that alliances, the mobility of experts, and the informal mechanisms associated with geographic co-location can present firms with useful opportunities to source technological knowledge. This paper uses insights from strategic management and organizational theory to suggest that organizational size may have an important impact on the extent of external learning, since it differentially affects the likelihood of learning via formal and informal mechanisms.Examining a cross-section of semiconductor startups, we find that external learning increases with startup size. With regard to the specific mechanisms of learning, we find that firms learn from alliances regardless of their size. For the informal mechanisms of mobility and geographic co-location, however, learning decreases with firm size. These results suggest that as startups grow, they may have increasing opportunities to access and exploit external knowledge, but their motivation (and hence ability) to learn from more informal sources may decrease.     

Science learning in virtual environments: a descriptive study

Usually, students learn more if the method of instruction matches their learning style. Since Physics and Chemistry deal with three–dimensional (3–D) objects, the ability to visualize and mentally manipulate shapes is very helpful in their learning. In fact, much of what Physics and Chemistry students know takes the form of images. However, little attention has been given to the pedagogical effectiveness of visual stimuli in those disciplines. Computers are being increasingly used as teaching tools. The new approaches include simulations, multimedia presentations and, more recently, virtual environments. Computer–based worlds are useful to visualize physical and chemical processes allowing for better conceptual understanding. Since 3–D virtual environments need to be explored and evaluated in science education, we have created a virtual environment ( Virtual Water ) for studying phases of matter, phase transitions and atomic orbitals at the final year of high school and first year of university levels. Based on that work, we discuss the implications of visual learning in designing strategies to cater for differences in learning modes. Our study indicates that 3–D virtual environments may help students with high spatial aptitude to acquire better conceptual understandings. However, only some parameters (interactivity, navigation and 3–D perception) have shown to be relevant and only for some topics. On the other hand, stereoscopic visualizations do not seem to be relevant, with the exception of crystalline structures.     

Assessing preschool children's physical activity: the Observational System for Recording Physical Activity in children-preschool version

In this paper we present initial information concerning a new direct observation system-the Observational System for Recording Physical Activity in Children-Preschool Version. The system will allow researchers to record young children's physical activity levels while also coding the topography of their physical activity, as well as detailed indoor and outdoor social and nonsocial contextual information. With respect to interobserver agreement (IOA), the kappa and category-by-category agreement mean of those obtained for the three illustrative preschools were generally above .80. Hence, our IOA data indicated that trained observers in the three preschools frequently agreed on the eight observational categories and accompanying codes. The results for preschoolers' level of physical activity indicated they spent the majority of observational intervals in sedentary activity (i.e., more than 80% intervals) and were observed in moderate to vigorous physical activity much less frequently (i.e., 5% or fewer intervals). For the 15 indoor and 12 outdoor activity contexts, variability across both the activity contexts and the three preschools were evident. Nevertheless, three classroom contexts-transition, snacks, and naptime--accounted for the greatest porportion of coded activity contexts for the children. In the three preschools, 4 of 17 physical activity types--sit and squat, lie down, stand, and walk--accounted for the topography of much of children's physical activity behavior Systematic observation of more representative preschool samples might better inform our present understanding of young children's physical activity in community preschool programs.     

Concurrent Validity and Reliability of Alternative Computer Game for the Coincidence-Anticipation Timing Task

The coincidence-anticipation timing (CAT) task assesses one facet of cognitive and motor performance and is used to understand the human visuo-motor system involved in intercepting the moving object. To assess the test–retest reliability and the concurrent validity in the Bridge Games package (Bridge) developed to assess the CAT task, the scores of 224 healthy subjects (M = 52.2, SD = 19.5 years old) were measured using the Bridge and the ‘gold standard’ Bassin Anticipation Timer (Bassin). A mean block of absolute, constant, and variable errors was calculated. Reliability and validity were expressed using intraclass correlation coefficients (ICC_2,k), standard error of measurement, minimal detectable change, and Pearson’s correlation. Reliability was good to excellent for all blocks (.73 ≤ ICC ≤ .88), and the validity was good to excellent when compared using Pearson’s correlation coefficient, suggesting that the two tests may have similar properties. Bridge is an alternative to existing clinical tests for the CAT task.     

The Teaching of the Visual Arts in the Lay Teacher Programme in Mid Araguaia,Brazil

This paper reports on a teaching experience which took place in a course for the qualification of primary school lay teachers in the mid-Araguaia region in mid-western Brazil. The greatest challenge was to work with the heterogeneity of the group of adult teacher/students from varied ethnic, social and cultural backgrounds (homesteaders, immigrants from other areas of the country, and Indians of the Tapirapé and Carajá tribes), taking into account their multiple understandings and experiences in an attempt to maintain their individual identities while constructing new knowledge.     

The All-Heterosexual World of Children’s Nonfiction: A Critical Content Analysis of LGBTQ Identities in Orbis Pictus Award Books, 1990–2017

Despite increased attention toward children’s nonfiction and informational texts in recent decades, there is still little research that investigates the ways in which various cultural identities are depicted in nonfiction children’s books. Focusing specifically on the 143 winners and honor recipients of the Orbis Pictus Award for Outstanding Nonfiction Literature for Children (1990–2017), this article reports the findings of a critical content analysis of depictions of lesbian, gay, bisexual, transgender, and queer (LGBTQ) identified people in award-winning nonfiction youth literature. The authors look across this set of texts as a literary construction of the world, making explicit where and how LGBTQ people are visible in these award-winning books for young readers. By analyzing specific depictions of queer-identified people, the authors argue the creators of these books rely upon heteronormative constructions, queer erasure, and compulsory heterosexuality to minimize (and even eliminate) queerness.     

The Perceptions of New Orleans Educators on the Process of Rebuilding the New Orleans School System after Katrina

This exploratory study seeks to understand the perceptions of New Orleans educators on the process of rebuilding the school system destroyed by Hurricane Katrina in August, 2005. Interviews with 10 educators and extensive document analysis allowed for an exploration of the phenomenology of this unique case of school reform in response to a natural disaster. Using the theoretical framework of chaos theory, the data reveal that this instance of school reform is influenced heavily by the uncertainties of life in post-Katrina New Orleans and that the presence of both hope and pessimism for positive change indicate a slower, less dramatic change in the New Orleans Public Schools (NOPS) than some had predicted.