596 research outputs found
Compact solitary waves in linearly elastic chains with non-smooth on-site potential
No full textIt was recently observed by Saccomandi and Sgura that one-dimensional chains with nonlinear elastic interaction and regular on-site potential can support compact solitary waves, i.e. travelling solitary waves with strictly compact
support. In this paper, we show that the same applies to chains with linear elastic interaction and an on-site potential which is continuous but non-smooth at minima. Some different features arise; in particular, the speed of compact
solitary waves is not uniquely fixed by the equation. We also discuss several generalizations of our findings
Arge sorbi Schedl & Pschorn-Walcher 1984
No full textArge sorbi SCHEDL,1984 M a t e r i a l: 2♀♀ e.l. Kärnten, Dobratsch, Villacher Alpengarten, 1500m, Larven an Sorbus aucupariae, e.p. 31.3. bzw. 2.4.2000, mit Kokons, leg., in coll. et det. W. Schedl 2000. B e m e r k u n g: Diese Bürstenhornblattwespe wurde erst 1984 beschrieben, ihre Larven leben monophag an Sorbus aucupariae -Blättern in einer Generation pro Jahr, in Österreich nur von Lunz (NÖ), Mutters und Venna-Tal (T) und aus den Rottenmauer Tauern (ST) bekannt (SCHEDL und PSCHORN- WALCHER 1984) und spätere Nachweise des Verfassers, auch aus Deutschland mittlerweile bekannt (TAEGER et al. 2006).Published as part of Schedl, Wolfgang, 2019, Beitrag zur Symphyta-Fauna des Naturparks Villacher Alpe (Dobratsch) im Kärntner Gailtal (Insecta, Hymenoptera), pp. 1185-1193 in Linzer biologische Beiträge 51 (2) on page 1189, DOI: 10.5281/zenodo.374211
Electromagnetic KY production from the proton in a Regge-plus-resonance approach
No full textA Regge-plus-resonance (RPR) description of the p(gamma,K)Y and p(e,e'K)Y processes (Y = Lambda, Sigma(0,+)) is presented. The proposed reaction amplitude consists of Regge-trajectory exchanges in the t channel, supplemented with a limited selection of s-channel resonance diagrams. The RPR framework contains a considerably smaller number of free parameters than a typical effective-Lagrangian model. Nevertheless, it provides an acceptable overall description of the photo- and electroproduction observables over an extensive photon energy range. It is shown that the electroproduction response functions and polarization observables are particularly useful for fine-timing both the background and resonance parameters
Geschlechtersensible Medizin
No full textNaghipour A, Oertelt-Prigione S. Geschlechtersensible Medizin. In: Kluge S, Sander M, Walcher F, Brenner T, eds. DIVI Jahrbuch 2023/2024. Schwerpunkt: Gendermedizin. Berlin: Medizinisch Wissenschaftliche Verlagsgesellschaft; 2023: 3-13
Aspects of Topological String Theory
No full textTwo aspects of the topological string and its applications are considered in this thesis. Firstly, non-perturbative contributions to the OSV conjecture relating four-dimensional extremal black holes and the closed topological string partition function are studied. A new technique is formulated for encapsulating these contributions for the case of a Calabi-Yau manifold constructed by fibering two line bundle over a torus, with the unexpected property that the resulting non-perturbative completion of the topological string partition function is such that the black hole partition function is equal to a product of a chiral and an anti-chiral function. This new approach is considered both in the context of the requirement of background independence for the topological string, and for more general Calabi-Yau manifolds. Secondly, this thesis provides a microscopic derivation of the open topological string holomorphic anomaly equations proposed by Walcher in arXiv:0705.4098 under the assumption that open string moduli do not contribute. In doing so, however, new anomalies are found for compact Calabi-Yau manifolds when the disk one-point functions (string to boundary amplitudes) are non-zero. These new anomalies introduce coupling to wrong moduli (complex structure moduli in A-model and Kahler moduli in B-model), and spoil the recursive structure of the holomorphic anomaly equations. For vanishing disk one-point functions, the open string holomorphic anomaly equations can be integrated to solve for amplitudes recursively, using a Feynman diagram approach, for which a proof is presented
Datensatz Notaufnahme Version 2010
No full textDie vorliegenden Dokumente beschreiben die Version 2010 des Datensatz Notaufnahme. Die genannten Autoren stehen stellvertretend für die Mitglieder der Sektion Notaufnahmeprotokoll der DIVI. Weiterführende Informationen zu dem Datensatz erhalten Sie über den korrespondierenden Autor:
Martin Kulla
2. Sprecher der Sektion Notaufnahmeprotokoll der DIVI
Bundeswehrkrankenhaus Ulm
Klinik für Anästhesiologie und Intensivmedizin
Oberer Eselsberg 40
89081 Ulm
E-Mail: [email protected]
Der Datensatz Notaufnahme wird in:
Kulla M, Röhrig R, Helm M, Bernhard M, Gries A, Lefering R, Walcher F, Sektion Notaufnahmeprotokoll der DIVI: [National data set “emergency department”. Development, structure and approval by the Deutsche Interdisziplinäre Vereinigung für Intensivmedizin und Notfallmedizin]. Anaesthesist 63: 243-255 (2014)
und
Kulla M, Baacke M, Schöpke T, Walcher F, Ballaschk A, Röhrig R, Ahlbrandt J, Helm M, Lampl L, Bernhard M, Brammen D: [Core Dataset “Emergency Department” of the German Interdisciplinary Association of Critical Care and Emergency Medicin (DIVI). Basis for healthcare research and quality control in emergency departments]. Notfall Rettungsmed 17: 671-681 (2014)
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T-duality invariant approaches to string theory
No full textPhDThis thesis investigates the quantum properties of T-duality invariant formalisms of
String Theory.
We introduce and review duality invariant formalisms of String Theory including
the Doubled Formalism. We calculate the background eld equations for the Doubled
Formalism of Abelian T-duality and show how they are consistent with those of a
conventional String Theory description of a toroidal compacti cation. We generalise
these considerations to the case of Poisson{Lie T-duality and show that the system of
renormalisation group equations obtained from the duality invariant parent theory are
equivalent to those of either of the T-dual pair of sigma-models. In duality invariant
formalisms it is quite common to loose manifest Lorentz invariance at the level of the
Lagrangian. The lack of manifest invariance means that at the quantum level one might
anticipate Lorentz anomalies and we show that such anomalies cancel non-trivially.
These represent important and non-trivial consistency checks of the duality invariant
approach to String Theory
Undergraduate medical education in emergency medical care : a nationwide survey at German medical schools
No full textBackground Since June 2002, revised regulations in Germany have required "Emergency Medical Care" as an interdisciplinary subject, and state that emergency treatment should be of increasing importance within the curriculum. A survey of the current status of undergraduate medical education in emergency medical care establishes the basis for further committee work. Methods Using a standardized questionnaire, all medical faculties in Germany were asked to answer questions concerning the structure of their curriculum, representation of disciplines, instructors' qualifications, teaching and assessment methods, as well as evaluation procedures. Results Data from 35 of the 38 medical schools in Germany were analysed. In 32 of 35 medical faculties, the local Department of Anaesthesiology is responsible for the teaching of emergency medical care; in two faculties, emergency medicine is taught mainly by the Department of Surgery and in another by Internal Medicine. Lectures, seminars and practical training units are scheduled in varying composition at 97% of the locations. Simulation technology is integrated at 60% (n=21); problem-based learning at 29% (n=10), e-learning at 3% (n=1), and internship in ambulance service is mandatory at 11% (n=4). In terms of assessment methods, multiple-choice exams (15 to 70 questions) are favoured (89%, n=31), partially supplemented by open questions (31%, n=11). Some faculties also perform single practical tests (43%, n=15), objective structured clinical examination (OSCE; 29%, n=10) or oral examinations (17%, n=6). Conclusion Emergency Medical Care in undergraduate medical education in Germany has a practical orientation, but is very inconsistently structured. The innovative options of simulation technology or state-of-the-art assessment methods are not consistently utilized. Therefore, an exchange of experiences and concepts between faculties and disciplines should be promoted to guarantee a standard level of education in emergency medical care
Duinafslag berekeningen m.b.t. een duin met steile vooroever aan de Zuidwest kust van Walcheren
No full textAan de Zuidwest kust van Walcher en bevindt zich op diverse locaties een duinenrij met steile vooroever. Toepassing van de Leidraad Duinafslag voor de beoordeling van de veiligheid tegen doorbraak onder superstorm omstandigheden is niet goed mogelijk. Daarom zijn voor een drietal maatgevende raaien tijdsafhankelijke duinafslag berekeningen m.b.v. het DUNER model uitgevoerd. In dit verslag worden de berekeningsresultaten gepresenteerd. Eerst wordt in par. 2 de toepasbaarheid van het DUNER model t.a.v. een duin met steile vooroever besproken. Vervolgens worden in par. 3 en par. 4 de toegepaste randvoorwaarden en berekeningsresultaten behandeld
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