78 research outputs found

    The Sequence of Isomorphism:The Temporal Diffusion Patterns of Quality Management in Higher Education Institutions and Hospitals

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    Isomorphism has been widely used to describe why trends penetrate entire organizational fields. However, research so far has neglected the temporal aspects of such diffusion processes and the organizational reasons underlying the introduction of new management tools. We argue that during reform waves, the reasons for adopting the new tools differ over time. Using comparative data from two surveys on quality management in the field of higher education and the health sector, we show that early adopters are more likely to be motivated by instrumental reasons, while late adopters will more likely be motivated by institutional reasons.</p

    Decoherence in Josephson Qubits from Dielectric Loss

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    Dielectric loss from two-level states is shown to be a dominant decoherence source in superconducting quantum bits. Depending on the qubit design, dielectric loss from insulating materials or the tunnel junction can lead to short coherence times. We show that a variety of microwave and qubit measurements are well modeled by loss from resonant absorption of two-level defects. Our results demonstrate that this loss can be significantly reduced by using better dielectrics and fabricating junctions of small area 10μm2\lesssim 10 \mu \textrm{m}^2. With a redesigned phase qubit employing low-loss dielectrics, the energy relaxation rate has been improved by a factor of 20, opening up the possibility of multi-qubit gates and algorithms.Comment: shortened version submitted to PR

    Zwischen Anspruch und Realität: Evidenzbasierte Qualitätsentwicklung durch Integration von Qualitätsmanagement und Hochschuldidaktik

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    Eine evidenzbasierte Gestaltung von Studium und Lehre, wie sie heute normativ eingefordert wird, bedarf des integrierten Zusammenwirkens von Qualitätsmanagement und Hochschuldidaktik – aber gibt es dieses in der Praxis? Mit Blick auf die allgemeine Befundlage, aber auch anhand einer eigenen empirischen Untersuchung zeigt der Beitrag diesbezüglich auf, dass Qualitätsmanagement und Hochschuldidaktik als weitgehend desintegrierte Funktionsbereiche wahrgenommen werden und Evidenzbasierung in der Praxis folglich keinen sehr hohen Stellenwert genießt. Ausgehend von einer Ursachenanalyse wird auf die dysfunktionalen, aber auch auf die funktionalen Auswirkungen dieser Separierung aufmerksam gemacht

    Qualitätsmanagement als Treiber einer evidenzbasierten Qualitätsentwicklung von Studium und Lehre?

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    Evidenzbasierte Qualitätsentwicklung von Studium und Lehre bedarf des Engagements von Hochschulleitungen und der Reflexionsbereitschaft von Lehrenden, aber vor allem auch der Unterstützung durch das hochschulische Qualitätsmanagement (QM). Ausgehend von einem Verständnis von QM als intermediärer Instanz zwischen Hochschuldidaktik und Lehrpraxis widmet sich der Beitrag daher der Frage, inwiefern QM auf diese Aufgabe vorbereitet ist. Anhand einer qualitativen und einer quantitativen Befragung von QM-Beschäftigten deutscher Hochschulen wird ein diesbezüglich eher skeptisches Bild gezeichnet. Statt einer Wissenschaftsorientierung scheinen vielmehr pragmatische Kalküle und damit einhergehende Zweckkonflikte die QM-Praxis zu dominieren

    Evaluation als Koordinationsproblem? Koordination von Lehrveranstaltungsbewertungen an deutschen Hochschulen im Kontext organisationaler Veränderungen

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    Der vorliegende Beitrag geht der Frage nach, wie Lehrveranstaltungsevaluationen an deutschen Hochschulen koordiniert werden. Dabei wird untersucht, welche Akteure und welche Ebenen für die Lehrveranstaltungsbewertungen zuständig und bei der Rechenschaftslegung beteiligt sind. Die empirischen Befunde zeigen, dass Lehrveranstaltungsbewertungen in den meisten Fällen mit relativ geringem Aufwand koordiniert werden. Dementsprechend werden nur wenige Akteure über wenige Ebenen hinweg mit der Erarbeitung und Auswertung von Evaluationsergebnissen betraut. Darüber hinaus liefert der Artikel Denkanstöße für weitere Analyseperspektiven zum Thema Evaluation und Koordination.This article studies how course evaluations are coordinated at German institutions of higher education. It investigates the internal actors and levels that are responsible for course evaluation and the analysis of evaluation results and reports. Our empirical evidence reveals that the higher education institutions do not put much effort in coordinating course evaluations and their subsequent analysis. Hence only a few actors and a few levels are involved in the development and analysis of course evaluations

    Stratospheric aerosol - Observations, processes, and impact on climate

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    Interest in stratospheric aerosol and its role in climate have increased over the last decade due to the observed increase in stratospheric aerosol since 2000 and the potential for changes in the sulfur cycle induced by climate change. This review provides an overview about the advances in stratospheric aerosol research since the last comprehensive assessment of stratospheric aerosol was published in 2006. A crucial development since 2006 is the substantial improvement in the agreement between in situ and space-based inferences of stratospheric aerosol properties during volcanically quiescent periods. Furthermore, new measurement systems and techniques, both in situ and space based, have been developed for measuring physical aerosol properties with greater accuracy and for characterizing aerosol composition. However, these changes induce challenges to constructing a long-term stratospheric aerosol climatology. Currently, changes in stratospheric aerosol levels less than 20% cannot be confidently quantified. The volcanic signals tend to mask any nonvolcanically driven change, making them difficult to understand. While the role of carbonyl sulfide as a substantial and relatively constant source of stratospheric sulfur has been confirmed by new observations and model simulations, large uncertainties remain with respect to the contribution from anthropogenic sulfur dioxide emissions. New evidence has been provided that stratospheric aerosol can also contain small amounts of nonsulfate matter such as black carbon and organics. Chemistry-climate models have substantially increased in quantity and sophistication. In many models the implementation of stratospheric aerosol processes is coupled to radiation and/or stratospheric chemistry modules to account for relevant feedback processes

    Navigating the Future of Organisational Health Services Research in Germany and beyond:a Position Paper

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    Background Recent analyses have shown that in health services research in Germany, healthcare organisations are often considered primarily as a study setting, without fully taking their complex organisational nature into account, neither theoretically nor methodologically. Therefore, an initiative was launched to analyse the state of Organisational Health Services Research (OHSR) in Germany and to develop a strategic framework and road map to guide future efforts in the field. This paper summarizes positions that have been jointly developed by consulting experts from the interdisciplinary and international scientific community.Methods In July 2023, a scoping workshop over the course of three days was held with 32 (inter)national experts from different research fields centred around OHSR topics using interactive workshop methods. Participants discussed their perspectives on OHSR, analysed current challenges in OHSR in Germany and developed key positions for the field’s development.Results The seven agreed-upon key positions addressed conceptual and strategic aspects. There was consensus that the field required the development of a research agenda that can guide future efforts. On a conceptual level, the need to address challenges in terms of interdisciplinarity, terminology, organisation(s) as research subjects, international comparative research and utilisation of organisational theory was recognized. On a strategic level, requirements with regard to teaching, promotion of interdisciplinary and international collaboration, suitable funding opportunities and participatory research were identified.Conclusions This position paper seeks to serve as a framework to support further development of OHSR in Germany and as a guide for researchers and funding organisations on how to move OHSR forward. Some of the challenges discussed for German OHSR are equally present in other countries. Thus, this position paper can be used to initiate fruitful discussions in other countries

    The White Mountain Polarimeter Telescope and an Upper Limit on CMB Polarization

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    The White Mountain Polarimeter (WMPol) is a dedicated ground-based microwave telescope and receiver system for observing polarization of the Cosmic Microwave Background. WMPol is located at an altitude of 3880 meters on a plateau in the White Mountains of Eastern California, USA, at the Barcroft Facility of the University of California White Mountain Research Station. Presented here is a description of the instrument and the data collected during April through October 2004. We set an upper limit on EE-mode polarization of 14 μK\mu\mathrm{K} (95% confidence limit) in the multipole range 170<<240170<\ell<240. This result was obtained with 422 hours of observations of a 3 deg2\mathrm{deg}^2 sky area about the North Celestial Pole, using a 42 GHz polarimeter. This upper limit is consistent with EEEE polarization predicted from a standard Λ\Lambda-CDM concordance model.Comment: 35 pages. 12 figures. To appear in ApJ

    Quantum bits with Josephson junctions

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    Already in the first edition of this book (Barone and Paterno, "Fundamentals and Physics and Applications of the Josephson Effect", Wiley 1982), a great number of interesting and important applications for Josephson junctions were discussed. In the decades that have passed since then, several new applications have emerged. This chapter treats one such new class of applications: quantum optics and quantum information processing (QIP) based on superconducting circuits with Josephson junctions. In this chapter, we aim to explain the basics of superconducting quantum circuits with Josephson junctions and demonstrate how these systems open up new prospects, both for QIP and for the study of quantum optics and atomic physics.Comment: 30 pages, 10 figures. Book chapter for a new edition of Barone and Paterno's "Fundamentals and Physics and Applications of the Josephson Effect". Final versio
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