Radiant Flux Through Apertures— II

Equations for the radiant flux through apertures are well-known. But the exact equations are cumbersome and give little direct insight into the behavior of aperture systems. The present paper considers simple approximate equations for rectangular apertures in parallel planes and in perpendicular planes. It extends the previous work (square apertures) to the general case of rectangular apertures.     

Composing new understandings of sustainability in the Anthropocene

The relationship between sustainability and the Anthropocene takes on new meaning in a time of unprecedented human impact on Earth systems. This relationship is at times contested and not well researched but critical in considering how we will respond to environmental challenges of today and the future. Elaborating on the need for new perspectives and nuanced understandings of sustainability, the contributors to this volume draw on posthumanist and “new” feminist materialist methodologies and theoretical lenses to engage readers in ways, which often contrast with prevailing thinking and research. From the cosmopolitics of place in urban Berlin to the watery space of urban wetlands they share research and rich narratives, which illustrate how sustainability is theorized and enacted across a range of diverse educational contexts. Moving beyond the rhetoric of sustainability, the authors invite us to explore innovative ways to engage with new concepts and emerging tensions that are now influencing the fields of education and sustainability.     

Radiation fields from polygonal sources

The calculation of the radiation field D(x, y, z) produced by a uniform polygonal source is of considerable practical importance. Fock showed that there are advantages in replacing the traditional surface integral by a contour integral, using Stokes' theorem. This innovation, however, has not yet penetrated very deeply. It seemed worthwhile, therefore, to systematize the procedure and to show how easily results can be obtained by the Fock method. An incidental conclusion of the paper is that the radiation field from a polygonal source often differs by less than one per cent from the field produced by a circular disk of the same area. Thus the simple disk formula can often be substituted for the more complicated polygonal formula.     

Delay-dependent stability criteria for systems with asymmetric bounds on delay derivative

This paper discretizes the states, a method introduced in [18] for constant delayed systems, not only in constructing the Lyapunov-Krasovskii (L-K) functional but also in designing the integral inequality technique [17] and [19] for time-varying delayed systems, which increase the order of uncorrelated augmentation [5], [21] and [22]. Based on the discretized state, [10] and [27]'s piecewise analysis method is applied to confirm the system stability in whole delay bound. Asymmetric variation of the delay derivative is assumed so that direct extension to all constraints of the delay derivative can be achieved. Examples show the resulting criteria improve the allowable delay bounds over all existing ones in the literature.     

The relationship of school-based parental involvement with student achievement: a comparison of principal and parent survey reports from PISA 2012

This paper explores parental involvement using principal and parent survey reports to examine whether parents’ involvement in their children’s schools predicts academic achievement. Survey data from principals and parents of seven countries from the PISA 2012 database and hierarchical linear modelling were used to analyse between- and within- school variance in students’ math achievement. Factor analysis of both principal and parent responses revealed three dimensions of parental involvement with schools: parent-initiated involvement, teacher-initiated involvement and parent volunteerism. Principal reports of parent-initiated involvement positively predicted between-school differences in student achievement. Within schools, parent reports of teacher-initiated involvement negatively predicted student achievement. The paper shows the importance of understanding the source of information for survey measures. Information on parental involvement from the parent surveys of the PISA study is suitable for describing within-school variation in student achievement, whereas principal reports can be used to predict variation between schools.     

Two‐dimensional sectioned images and three‐dimensional surface models for learning the anatomy of the female pelvis

In the Visible Korean project, serially sectioned images of the pelvis were made from a female cadaver. Outlines of significant structures in the sectioned images were drawn and stacked to build surface models. To improve the accessibility and informational content of these data, a five‐step process was designed and implemented. First, 154 pelvic structures were outlined with additional surface reconstruction to prepare the image data. Second, the sectioned and outlined images (in a browsing software) as well as the surface models (in a PDF file) were placed on the Visible Korean homepage in a readily‐accessible format. Third, all image data were visualized with interactive elements to stimulate creative learning. Fourth, two‐dimensional (2D) images and three‐dimensional (3D) models were superimposed on one another to provide context and spatial information for students viewing these data. Fifth, images were designed such that structure names would be shown when the mouse pointer hovered over the 2D images or the 3D models. The state‐of‐the‐art sectioned images, outlined images, and surface models, arranged and systematized as described in this study, will aid students in understanding the anatomy of female pelvis. The graphic data accompanied by corresponding magnetic resonance images and computed tomographs are expected to promote the production of 3D simulators for clinical practice. Anat Sci Educ 6: 316–323. © 2013 American Association of Anatomists.     

Teaching the Self

Abstract

Teaching a business program capstone class presents a double challenge, requiring the educator to integrate different functional areas of business and evaluate student learning. This paper discusses concept maps as an active learning assessment tool in teaching a strategic management capstone course. Concept maps are used to meaningfully depict knowledge and present illustrations of relationships between concepts in a particular course. This study reviews 54 individual and 19 group concept maps collected over three semesters. The analysis affirms that concept maps are a powerful pedagogical tool that requires students to reflect on the knowledge gained during a course.     

The impact of Korean television drama viewership on the social perceptions of single life and having fewer children in married life

The purpose of this study was twofold. On the ground of Gerbner's cultivation theory, it examined the effect of South Korean drama consumption on the perceived prevalence of single life and having fewer children in married life. It also tested the causality of cultivation effects through a priming methodology. Results indicated that the perceived prevalence of having fewer children in married life was significantly affected by exposure to dramas which positively feature single life and having fewer children in married life on television. The findings provide public health policy-makers and communication campaigners with valuable theoretical relationships, as well as their practical implications.