Sökresultat

Filtyp

Din sökning på "*" gav 533107 sökträffar

Physical limitations on antennas: isoperimetric inequalities and the effect of metamaterials

In this paper, physical limitations on antennas are presented based on the holomorphic properties of the forward scattering dyadic. As a direct consequence of causality and energy conservation, a forward dispersion relation for the extinction cross section is established, and isoperimetric inequalities for the partial realized gain and partial directivity are derived for antennas of arbitrary shap

Affective engagement in teachable agents

Students’ use of two different versions of a digital math game, one extended with a teachable agent, is compared. The purpose is to compare the affective engagement of student using the two different versions. An overall aim is to extend our knowledge of the paradigm Learning by Teaching.

Comparison of charge sampling and voltage sampling

This paper compares two different sampling techniques, charge sampling and conventional voltage sampling. Theoretical analysis and circuit simulation show some attractive advantages of charge sampling over voltage sampling. High speed charge sampling, charge sub-sampling, and charge sampling with embedded filter functions are proposed in this paper.

The Generative Mechanisms of Healthcare Digitalization

Digitalization is considered as an important strategy to meet the challenges facing healthcare sector. However, the results often fall below expectations. Furthermore, the literature has provided a fragmented understanding as previous studies have generally focused on the advantages and the barriers of the adoption of health care IS. Very little attention has been paid to the generative mechanisms