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Die Hessischen Schülerakademien unterscheiden sich von manchen anderen Akademien dadurch, dass sie zugleich als Schulpraktika für Lehramtsstudierende durchgeführt werden, ferner, weil von derselben Schule mehrere SchülerInnen teilnehmen dürfen und dies nicht nur jeweils einmal. Dies sichert inhaltliche und persönliche Kontinuität, obwohl wir darauf achten, dass hinreichend viele Neulinge eine Chance zur Teilnahme erhalten. Etwa die Hälfte der SchülerInnen möchte sich nach einer Akademie sofort für die nächste anmelden, und auch unter den Studierenden steigt der Anteil an "Wiederholern", die den Praktikumsschein schon erworben haben. Eine solche Begeisterung ist kein schlechtes Zeichen für eine universitäre Lehrveranstaltung.
CMOS sensors are the most promising candidates for the Micro-Vertex-Detector (MVD) of the CBM experiment at GSI, as they provide an unprecedented compromise between spatial resolution, low material budget, adequate radiation tolerance and readout speed. To study the integration of these sensors into a detector module, a so-called MVD-demonstrator has been developed. The demonstrator and its in-beam performance will be presented and discussed in this work.
With respect to nosocomial influenza infections, the welfare of patients is best served by high rates of staff immunity against influenza. However, data from the Centers of Disease Control (CDC) in the USA and the Robert Koch-Institute (RKI) in Germany indicate that most of health care workers (HCWs) choose not to be vaccinated. Under voluntary influenza immunization standards, institutional influenza outbreaks occur every flu season. The question about the legality of implementation mandatory flu vaccination for HCWs is an ongoing debate, which covers several different positions.
To characterize the attitudes of German HCWs toward mandatory influenza immunization, an anonymous questionnaire was offered to HCWs of the University Hospital in Frankfurt/Main / Germany. Our study showed that almost 70% of the respondents would accept mandatory influenza vaccination.
In our opinion an annual influenza vaccination should be required for HCWs who care for immunocompromised patients and residents in long-term care if there will be a failure of voluntary vaccination programs. An informed declination should be obtained from employees who decline vaccination and these HCWs ought to work in uncritical areas of patient care.
We present unambiguous evidence from lattice simulations of Nf = 3 QCD for two tricritical points in the (T;m) phase diagram at fixed imaginary m=T = ip=3 mod. 2p=3, one in the light and one in the heavy quark regime. Together with similar results in the literature for Nf = 2 this implies the existence of a chiral and of a deconfinement tricritical line at those values of imaginary chemical potentials. These tricritical lines represent the boundaries of the analytically continued chiral and deconfinement critical surfaces, respectively, which delimit the parameter space with first order phase transitions. It is demonstrated that the shape of the deconfinement critical surface is dictated by tricritical scaling and implies the weakening of the deconfinement transition with real chemical potential. A qualitatively similar effect holds for the chiral critical surface.
Direct photon emission in heavy-ion collisions is calculated within a relativistic micro+macro
hybrid model and compared to the microscopic transport model UrQMD. In the hybrid approach,
the high-density part of the collision is calculated by an ideal 3+1-dimensional hydrodynamic
calculation, while the early (pre-equilibrium-) and late (rescattering-) phase are calculated with
the transport model. Different scenarios of the transition from the macroscopic description to
the transport model description and their effects are studied. The calculations are compared to
measurements by the WA98-collaboration and predictions for the future CBM-experiment are
made.
AKUE is developed by the e-learning centre of the University of Frankfurt, studiumdigitale, and is a procedure to assure high quality levels of e-learning course design and digital media production. The name AKUE stands for the German words for analysis, concept, implementation and evaluation and describes the four phases of the process. Background of AKUE is the fact, that costs and benefits of e-learning courses are difficult to be quantified. Therefore so called procedure (or process) models are applied in order to improve the quality and effectiveness of e-learning courses. This paper presents the process and steps of AKUE and gives examples for its application.
Hintergrund: Im Rahmen der Erforschung von Mechanismen der Presbyopie-Entstehung hat das Interesse an Methoden zur Linsendensitometrie wieder zugenommen. Für spezielle Fragestellungen sind flexible Untersuchungsmethoden notwendig.
Methoden: Basierend auf Aufnahmen mit der Scheimpflug-Kamera Pentacam HR (Oculus, Wetzlar) wurde ein MATLAB-Programm (V7.0, The MathWorks) erstellt, um größere Datenmengen automatisiert auszuwerten. Die Erkennung der Pupillenmitte als Referenzpunkt erfolgt mittels eines Randerkennungsalgorithmus. Als Kennzahlen dienen klassische Parameter der beschreibenden Statistik (Mittel, Minimum, Maximum, Standardabweichung und Variationskoeffizient) für einen definierten rechteckigen Bereich und für die zentrale vertikale Achse.
Ergebnisse: In einer Präliminarserie von 18 Augen war eine automatisierte Messung mit korrekter Pupillenerkennung in 80% der Fälle möglich. Verglichen mit der hersteller-eigenen Software (Pentacam 6.03r11) besitzt das eigene Programm eine erweiterte Spannweite der Messwerte. Die Messwerte können automatisch nach Excel (Microsoft) exportiert werden. Ein modularer Aufbau ermöglicht eine flexible Erweiterung für weitere Fragestellungen (z.B. Quantifizierung von Kern- und Rindentrübungen).
Schlussfolgerungen: Mittels eines selbst programmierten MATLAB-basierten Programmes kann eine automatisierte Messung und Analyse von linsndensitometrischen Parametern durchgeführt werden.
In: conference proceedings, edulearn 2010, Barcelona 5.-7.7.2010.
In order to design and tutor online and blended learning courses, trainers and teachers need to obtain appropriate qualification. In this paper different competency models for online teaching which developed in Germany 2005 – 2008 will be addressed as well as different settings to qualify teachers and trainers appropriately. Finally the results of an evaluation of two different training settings will be presented in order to compare an in house versus a transorganisational training program.
The isospin, spin and parity dependent potential of a pair of static-light mesons is computed using Wilson twisted mass lattice QCD with two flavors of degenerate dynamical quarks. From the results a simple rule can be deduced stating, which isospin, spin and parity combinations correspond to attractive and which to repulsive forces.