The Benefits of an Augmented Reality Magic Mirror System for Integrated Radiology Teaching in Gross Anatomy

Early exposure to radiological cross-section images during introductory anatomy and dissection courses increases students’ understanding of both anatomy and radiology. Novel technologies such as augmented reality (AR) offer unique advantages for an interactive and hands-on integration with the student at the center of the learning experience. In this article, the benefits of a previously proposed AR Magic Mirror system are compared to the Anatomage, a virtual dissection table as a system for combined anatomy and radiology teaching during a two-semester gross anatomy course with 749 first-year medical students, as well as a follow-up elective course with 72 students. During the former, students worked with both systems in dedicated tutorial sessions which accompanied the anatomy lectures and provided survey-based feedback. In the elective course, participants were assigned to three groups and underwent a self-directed learning session using either Anatomage, Magic Mirror, or traditional radiology atlases. A pre- and posttest design with multiple choice questions revealed significant improvements in test scores between the two tests for both the Magic Mirror and the group using radiology atlases, while no significant differences in test scores were recorded for the Anatomage group. Furthermore, especially students with low mental rotation test (MRT) scores benefited from the Magic Mirror and Anatomage and achieved significantly higher posttest scores compared to students with a low MRT score in the theory group. Overall, the results provide supporting evidence that the Magic Mirror system achieves comparable results in terms of learning outcome to established anatomy learning tools such as Anatomage and radiology atlases.     

Investigating the theoretical structure of the DAS‐II core battery at school age using Bayesian structural equation modeling

Bayesian structural equation modeling (BSEM) was used to investigate the latent structure of the Differential Ability Scales—Second Edition core battery using the standardization sample normative data for ages 7–17. Results revealed plausibility of a three‐factor model, consistent with publisher theory, expressed as either a higher‐order (HO) or a bifactor (BF) model. The results also revealed an alternative structure with the best model fit, a two‐factor BF model with Matrices (MA) and Sequential and Quantitative Reasoning (SQ) loading on g only with no respective group factor loading. This was only the second study to use BSEM to investigate the structure of a commercial ability test and the first to use a large normative sample and the specification of both approximate zero cross‐loadings and correlated residual terms. It is believed that the results produced from the current study will advance the field's understanding of not only the factor structure of the DAS‐II core battery but also the potential utility of BSEM in psychometric investigations of intelligence test structures.     

Agents and subjects: schooling and conceptions of citizenship in early nineteenth-century Sweden

This article aims to analyse how the emerging Swedish school system in the early nineteenth century can be understood within the context of a gradual break-up of the estate society and its replacement with a class society in which citizenship was an important foundation. This is done through the discussion of the conceptions of citizenship on two levels. The first is the national level, focusing the national debate on education, and the second is the local level, investigating the local schools and the school setting. The main result is that the conceptions of citizenship in the school context were formed along two major lines: an inclusive social and civil citizenship and an exclusive, active and political citizenship. Consequently, the emerging Swedish school system simultaneously fostered these two citizenship conceptions, which coexisted in an educational system that was able to cast pupils as either subjects (comprehensive citizenship) or agents (designated citizenship).     

Lesetechniken für die Inspektion von Software-Anforderungsdokumenten

Zusammenfassung.   Inspektion hilft bereits in frühen Phasen der Softwareentwicklung, die Qualit?t von Softwareprodukten zu bestimmen und Nachbearbeitungsaufwand einzusparen. Lesetechniken sind ein Ansatz, der die Aufmerksamkeit von Inspektoren beim individuellen Lesen auf bestimmte Fehlermengen lenken und dadurch die Arbeit mehrerer Inspektoren untereinander koordinieren soll. Diese Arbeit berichtet über ein Experiment, das einerseits die Effektivit?t und Effizienz mehrerer Lesetechniken auf individueller und auf Teamebene miteinander vergleicht und andererseits Zusammenh?nge der Verwendung von Lesezeit mit der Effektivit?t von bestimmten Inspektorengruppen untersucht. Die Ergebnisse unterstützen den gezielten Einsatz von Lesetechniken bei der Planung einer Inspektion, um Inspektoren beim Finden von Fehlern in bestimmten Mengen bzw. Dokumentteilen anzuleiten und um die Effektivit?t und Effizienz im Team durch Minimieren der Anzahl mehrfach gefundener Fehler zu optimieren. Die betr?chtlichen Schwankungen der Leistungen von Inspektoren, die eine bestimmte Lesetechnik verwendeten, im Vergleich zu den Unterschieden der Mittelwerte verschiedener Lesetechniken verdient eine detailliertere Untersuchung. Bei der Untersuchung des Zeitverlaufs für Inspektorengruppen mit unterschiedlicher Gesamteffektivit?t zeigten sich betr?chtliche Leistungsunterschiede schon nach den ersten drei Stunden der Inspektion. Das Design von Lesetechniken sollte angepa?t werden, um dynamisch auf Inspektoren mit deutlich unterschiedlichen F?higkeiten abgestimmt zu werden. Eingegangen am 31. Oktober 2000 / Angenommen am 10. April 2001     

Knowledge transfer processes in IT outsourcing relationships and their impact on shared knowledge and outsourcing performance

What is the impact of specific knowledge-transfer processes on the level of shared knowledge and, in turn, on outsourcing performance in outsourcing relationships? Drawing on a series of case studies covering IT providers and banks, we investigate several applied knowledge-transfer processes dedicated to the transfer of explicit or tacit knowledge between outsourcing banks and their providers. We examine the differential influence of various types of knowledge transfer on shared knowledge between the parties and on the resulting outsourcing performance. Results depict the differential impact of various knowledge-transfer processes dedicated to the transfer of explicit, or tacit knowledge, respectively, on the development of shared knowledge. Interestingly, the combination of both knowledge-transfer processes dedicated to the transfer of explicit knowledge and those dedicated to the transfer of tacit knowledge proves to be most effective. Furthermore the results indicate that high levels of shared knowledge positively influence outsourcing performance. In addition to previous literature, we found transfer processes for explicit knowledge in an outsourcing context to consist of two dimensions: The content dimension, primarily focused on in literature, and the sender–receiver dimension of transfer processes which are rarely addressed in outsourcing literature. The content dimension embraces mechanisms such as trainings, SLAs and standards that define how content has to be interpreted, whereas the sender–receiver dimension of transfer processes of explicit knowledge defines explicit, documented interaction structures between parties.     

为什么引入COO

你可能不会对这样的事情很吃惊：一位猎头与他人合著了一本书，详细探讨了企业应该着手创造COO（首席运营官）这一新角色的方法和原因。你也许会说，别管组织结构，先算算这么做的成本吧。     

A Water Displacement Method for the Determination of Breast Volume

Abstract

The study followed a four-phase design. In Phase I an exhaustive search was conducted for all English language coaching research published in journals from 1970 to 2001. In Phase II, copies of the research were obtained. An expert panel conducted a manual search and a review in Phase III to address validity. Analysis of the research was completed in Phase IV (Culver, Gilbert, &; Trudel, 2003; Silverman &; Skonie, 1997). Over 1,100 articles were reviewed, and 610 met the inclusion criteria. Selected findings include: (a) a relatively low mean spread across many journals, (b) a focus on coaching behavior using quantitative methodologies, and (c) a primary emphasis on team sports in school contexts.