Using field theory techniques, we study uniform-field effects for integer-spin antiferromagnetic (AF) tubes (cylinder type spin systems) in the weak interchain-coupling regime. When the number of chains is odd in a tube, the AF interchain coupling yields the frustration. In the case without external fields, a nonlinear sigma model (NLSM) method shows that the lowest excitations in the frustrate...

Avhandlingen baseras på följande arbeten: I Rung JP, Carlsson A, Rydén Markinhuhta K, Carlsson ML (2005) (+)-MK-801 induced social withdrawal in rats; a model for negative symptoms of schizophrenia. Carlsson ML (2007) Effects of (-)-OSU6162 and ACR16 on motor activity in rats, indicating a unique mechanism of dopaminergic stabilization (submitted). The dopaminergic stabilizers (-)-OSU6162 and A...

We investigate the collision dynamics of two non-Abelian vortices and find that, unlike Abelian vortices, they neither reconnect themselves nor pass through each other, but create a rung between them in a topologically stable manner. Our predictions are verified using the model of the cyclic phase of a spin-2 spinor Bose-Einstein condensate.

Dieser Beitrag beschreibt Retrievalexperimente mit einem umfangreichen multilingualen Korpus im Rahmen von WebCLEF 2006 an der Univer-sität Hildesheim. Im Vordergrund stand die Nut-zung von HTML Strukturelementen, der Einsatz von Blind Relevance Feedback und die Evaluie-rung des sprachunabhängigen Indexierungsansat-zes.

Zusammenfassung In diesem Beitrag wird beschrieben, wie Cross-Device-Interaction mit Hilfe von Tangibles zur Förde-rung von Lernprozessen im Vorschul-und beginnenden Grundschulalter eingesetzt werden kann. Es wird ein mit digitalen Medien angereicherter Lernraum geschaffen, in dem mit Hilfe von geräteüber-greifender körper-und raumbezogener Interaktion spielerisch Lesen und Schreiben gelernt we...

INTRODUCTION Understanding the social determinants of child health is a prominent area of research. This paper examines the measurement of socioeconomic position in a sample of families of children with cancer. Socioeconomic position is difficult to measure in pediatric health research due to sensitivity of asking about finances when research is conducted in health care delivery settings, finan...

Vibrational ladder climbing (VLC), which is a cascade excitation process of molecular vibrational levels under chirped laser pulses, one the promising methods to realize bond breaking, but there have been few experimental reports on breaking by VLC. In this study we observed vanishing transition dipole moment, interrupting VLC in general systems. This phenomenon, that adjacent forbidden at cert...