Astrofysikalisk dynamik , VT 2010 Stellar Winds : Mechanisms and Dynamics

Do fast winds dominate the dynamics of planetary nebulae?

Evaluation of New MOND Interpolating Function with Rotation Curves of Galaxies

The rotation curves of a sample of 46 low- and high-surface brightness galaxies are considered in the context of Milgrom's modi_ed dynamics (MOND) to test a new interpolating function proposed by Zhao et al. (2010) [1] and compare with the results of simple interpolating function. The predicted rotation curves are calculated from the total baryonic matter based on the B-band surface photometry,...

Relativistic stellar jets: dynamics and non-thermal radiation

Relativistic stellar jets, produced in binary systems called microquasars, propagate through media with different spatial scales releasing their energy in the form of work and radiation from radio to gamma rays. There are several medium-interaction scenarios that these jets can face. In particular, in relativistic stellar jets the presence of a star is an unavoidable element whose importance de...

Designimplikationen für eine digitale Lesewerkstatt: Die Dynamik des Textes und die Irreversibilität der Papierannotation

Zur Entwicklung einer digitalen „Lesewerkstatt“ wurde eine Studie zur Lesepraxis auf Papier durchgeführt. In bisherigen Untersuchungen zur Annotation von Texten blieb die Dynamik der Annotationspraxis unberücksichtigt. Die Ergebnisse der hier vorgelegten Studie weisen jedoch darauf hin, dass die Annotationspraxis durch eine Spannung zwischen der Dynamik des sich erst bildenden Textverständnisse...

A new approach to detect Life threatening cardiac arrhythmias using Sequential spectrum of Electrocardiogram signals

This study evaluates the discriminative power of sequential spectrum analysis of the short-term electrocardiogram (ECG) time series in separating normal and subjects with life threatening arrhythmias like, ventricular tachycardia/fibrillation (VT/VF). The raw ECG time series is transformed into a series of binary symbols and the binary occupancy or relative distribution of mono-sequences (i.e. ...