Three-point vertex functions in Yang-Mills Theory and QCD in Landau gauge

Solutions for the three-gluon and quark-gluon vertices from Dyson-Schwinger equations and the three-particle irreducible formalism are discussed. Dynamical quarks (``unquenching'') change the three-gluon vertex via the quark-triangle diagrams which themselves include fully dressed quark-gluon vertex functions. On the other hand, the quark-swordfish diagram is, at least with the model used for the two-quark-two-gluon vertex employed here, of minor importance. For the leading tensor structure of the three-gluon vertex the "unquenching" effect can be summarized for the nonperturbative part as a shift of the related dressing function towards the infrared.Comment: Talk given by Adrian L. Blum at XIIth Quark Confinement and the Hadron Spectrum, August 28 - September 04, 2016, Thessaloniki, Greec

On propagators and vertices of Landau gauge Yang-Mills theory

We calculate the three-point functions of pure Landau gauge QCD and investigate their influence on the propagators. As expected, the ghost-gluon vertex leads only to minor modifications, while the three-gluon vertex has a sizeable impact on the mid-momentum regime of the gluon propagator. We describe an effective model of the three-gluon vertex that includes contributions from the neglected two-loop diagrams and thus allows to obtain propagators in good agreement with lattice results. We also determine the three-gluon vertex from these propagators and find good agreement with lattice results as well. In turn, these results allow us to assess the effect of the missing two-loop diagrams in the gluon propagator equation. Finally, we present the first self-consistent calculation that includes all two-and three-point functions.Comment: 12 pages, 10 figs., contribution to "QCD-TNT-III: From quarks and gluons to hadronic matter: A bridge too far?", 2-6 Sept 2013, ECT*, Trento, Ital

Outpatient Palliative Care Service Involvement: A Five-Year Experience from a Tertiary Hospital in Switzerland

BACKGROUND: The value of early integration of palliative care has been demonstrated increasingly for the past years in both oncological and nononcological diseases. Outpatient palliative care services might represent a feasible approach to implement supportive care in early disease. In this study, we aimed at evaluating which patients use and benefit from outpatient palliative care services, which symptoms are addressed most, and which support services are installed in this early phase of disease. METHODS: We retrospectively analyzed the entire patient collective of a recently developed palliative care outpatient clinic within the leading university hospital in Switzerland for a period of five years. Sociodemographics, symptoms, and information on disease as well as patient-reported outcomes were retrieved from the electronic patient files. Demographic and clinical data were analyzed by descriptive statistics between groups and survival was analyzed by means of Kaplan-Meier estimates and log-rank test. RESULTS: We report on 642 consultations of 363 patients between 2016 and 2020. Patients had a mean of 1.8 visits (range 1-10), with n = 340 patients (93.7%) of patients suffering from an oncological disease. Overall symptom load was high, with n = 401 (73.7%) of patient-reported outcomes reporting two or more symptoms. Distress levels of 5 or higher were reported in n = 78 (30.4%) of available patient-reported outcomes. Independent of the origin of primary disease and the length of the disease trajectory, patients were referred to the palliative care service in median only four months before death. CONCLUSION: We identify high symptom load and distress in the outpatient palliative patient population. Patients benefitted from supportive medication, improvement of ambulatory support systems and advance care planning, and more than one-third of patients remained in follow-up, indicating a good acceptance of the service. Overcoming the overall late referral could, however, further increase the quality of life at earlier stages of disease

Product Development as Dynamic Capability

Technologiegeprägte Industrien wie die Luft- und Raumfahrt, Automobilindustrie oder IT- und Telekomindustrie, dem Untersuchungsfeld der Dissertation, sind gekennzeichnet durch einen intensiven Wettbewerb um technische Innovationen insbesondere zur funktionalen Steigerung der Produkteigenschaften. Neue Technologien können als USP ("unique selling proposition"), als objektiv einzigartige Leistungsdifferenz eingesetzt werden und eröffnen Chancen für Produkterfolge auf nationalen und internationalen Märkten. In diesem Umfeld behandelt die Arbeit die Produktentwicklung als einen Kernprozess zur Anwendung von Ingenieursleistungen. Produktentwicklung wird dabei nicht im klassischen Sinne als eine Abfolge spezifischer Aktivitäten, sondern als dynamische Fähigkeit untersucht, die es Unternehmen ermöglicht erfolgreiche Produkte kontinuierlich und wiederkehrend zu entwickeln. Dieser Ansatz zeichnet sich dadurch aus, dass er dynamische Prozesse, wie Lern- und Veränderungsprozesse, in den Vordergrund stellt und dabei den Einfluss von vorhandenen Kompetenzen und Marktpositionen berücksichtigt, die das Unternehmen im Laufe seiner historischen Entwicklung entwickelt hat. Das Ergebnis der vorliegenden Arbeit ist eine dynamische Konzeption von Produktentwicklung, die bestehende überwiegend statische Aspekte sinnvoll ergänzt, und Probleme behandelt, die durch sich verändernde Technologien und Märkte aufgeworfen werden. Diese dynamische Sichtweise wurde anhand zweier Fallstudien in der Automobilindustrie (Audi AG) und Telekommunikationsindustrie (Siemens ICN) verifiziert und weiterentwickelt. Die vorliegende Arbeit ist somit ein erster Schritt hin zu einer dynamischen Sichtweise auf komplexe Zusammenhänge in Unternehmen. Durch den Fokus auf den Prozess der Produktentwicklung werden diese Zusammenhänge greifbar und sind daher für die Praxis unmittelbar relevant. Die drei Kernelemente der Konzeptionierung sind erstens, daß Produkterfolge durch ein einzelnes Produkt möglich sind, jedoch Nachhaltigkeit des Erfolges nur durch eine Abfolge von Produkten erzeugt wird, die einen technischen Vorsprung bilden, ausweiten und verstärken. Zweitens, das allgemein in der Produktentwicklung angewandte Postulat der Trennung zwischen Produktplanung und -realisierung kann nicht aufrecht erhalten werden, weil in einem dynamischen Umfeld sich die Rahmenbedingungen kontinuierlich verändern und somit Planung und Realisierung größtenteils parallel erfolgen. Aber es besteht, drittens, in solch einem Umfeld, eine identifizierbare Beziehung zwischen Lern- bzw. Veränderungsprozessen und dem Produkterfolg. Diese Ergebnisse sind konform mit qualitativen Erkenntnissen der Strategieforschung, die "dynamische Fähigkeiten" in der Organisation als Motor von Produkterfolgen identifiziert haben.Technology-driven industries like aerospace, automobiles, IT or telecommunication are characterized by intensive competition for new technological innovations to improve product features and functionality. New technologies can be sold as USP ("unique selling proposition") and be used as performance advantages to create new chances for product success in national and international markets. In such an environment, the work copes with the product development process as the core process to transform technologies into viable products. In such a sense, product development is not seen in the traditional view as a sequence of activities but as a dynamic capability that allows to develop successful products repeatedly and continuously. Such an approach is characterized by dynamic processes like learning and reconfiguration that develop competences and market positions in the course of a company´s evolution. The result of this work is a dynamic conceptualization of product development, that complements existing more static aspects and copes with problems that are caused by changing markets and technologies. Such a dynamic view has been developed and verified in two case studies in automobiles (Audi AG) and telecommunication (Siemens ICN). The work is a first step towards a dynamic view to the complex interrelationships within companies. The focus on the process of product development links theoretical concepts to concrete business operations and makes it therefore valuable for management practise. The three basic elements of a dynamic conceptualization of product development are first, that singular new product success might happen occasionally, but to make new product success sustainable it needs sequences of products that build, expand and penetrate one or more technological advantages. Second, the market-based approach of separating product planning and product development can not be confirmed because, in dynamic environments, where technologies and markets are continuously evolving, product planning and product development has to proceed in parallel. But, in such an environment, there is, third, an identifiable relation between dynamic processes (learning and reconfiguration) and new product success. These results confirm qualitative insights of strategic management research, which proclaim dynamic capabilities as the "engine" of new product success

Synthesis and Thermally and Light Driven Cleavage of an N-Heterocyclic Diphosphine with Inorganic Backbone

A diphosphine with an unsupported PP bond connecting two carbon-free "inorganic" 1,3,2,4,5-diazaphosphadisilolidine rings was prepared by reductive coupling of a P-chloro-substituted monocyclic precursor molecule. VT-EPR studies revealed that the diphosphine exists in solution, like other compounds of this kind, in dynamic equilibrium with the corresponding phosphinyl radicals. Determination of the radical concentration from the EPR spectra permitted to calculate thermochemical parameters for the homolytic PP bond fission. The results disclose that both the enthalpy and entropy of dissociation are higher than in topologically related bi(diazaphospholidines). The impact of the entropy term allows explaining that, regardless of the presence of an energetically rather stable PP bond, the onset of dissociation is observable even at ambient temperature. Irradiation experiments showed that radical formation cannot only be induced thermally, but also by photolysis.Peer reviewe

Bund-Länder-Programm zum Betreuungsausbau: Fallstudien zur Umsetzung in sechs österreichischen Städten. Wirkungsanalyse der familienpolitischen Leistungen des Bundes - Modul 3

Im Jahr 2008 wurde in Österreich von Bund und Ländern gemeinsam der Ausbau von Kinderbetreuungsplätzen für unter Dreijährige beschlossenen. Im vorliegenden Forschungsbericht wird die Umsetzung der Ziele in österreichischen Städten und Gemeinden aus politikwissenschaftlicher Perspektive untersucht. Zu diesem Zweck wurden in Eisenstadt, Innsbruck, Pinkafeld, Steyr, Wels und Wörgl Fallstudien mithilfe qualitativer Experteninterviews und statistischer Analysen der lokalen Betreuungssituation durchgeführt

Клиент-серверное приложение для извлечения гидрометеорологических данных

This article describes a Web-based application for automated extracting of unstructured hydrometeorological data from sites on the Internet that provide such information. The software makes it easier to receive weather reports, including encoded in the KN-01, as well as to work with them