390 research outputs found
NeuroMET - SPECIAL MRS Reproducibility
No full textMagnetic Resonance Spectroscopy Data acquired in 9 healthy volunteers using a SPECIAL Localization with three different adiabatic inversion pulses (hyperbolic secant, WURST, GOIA) at a 7T Magnetom whole-body system (Siemens Healthineers, Erlangen, Germany). Every volunteer was examined 4 times (twice on day one including a repositioning between the measurements, and twice on day two a week later without repositioning between alike measurements) to investigate the repeatability and reproducibility. Please find more details in L.T. Riemann, C.S. Aigner, S.L.R. Ellison, R. Brühl, R. Mekle, S. Schmitter, O. Speck, G. Rose, B. Ittermann, A. Fillmer, "Assessment of Measurement Precision in Single Voxel Spectroscopy at 7 T: Towards Minimal Detectable Changes of Metabolite Concentrations in the Human Brain In-Vivo", Magn Reson Med DOI: DOI: 10.1002/mrm.29034 (in press).
Correspondence: [email protected], [email protected]
Code to generate the restricted maximum-likelihood estimation (REML) and the Bland-Altman (BA) plots of the spectral shape can be found under https://gitlab1.ptb.de/LRiemann/repeatability_reproducibility.git
Following data sets are provided:
1. ConcentrationsPaper-mrm29034_20211012_Riemann-Fillmer.xls
Data that is used with the R code to obtain the REML analysis of the metabolite concentrations. Note that the zeros indicate that the metabolite concentration could not be quantified.
2. RawData-mrm29034_20211012_Riemann-Fillmer.zip folder
Raw spectral data from Magnetom Siemens 7 T scanner
file names have the following structure: "SubjectNumber_Session_ScanBlock_Pulse.dat", e.g. "p1_T1_1_GOIA.dat"
3. npy-files-mrm29034_20211012_Riemann-Fillmer.zip folder
Spectral data in a python format to generate the BA plots with the shared code;
data names have the following structure: "SubjectNumber_PulseSessionScanBlock", e.g. "p1_GOIAT11.npy" for Subject p1, GOIA Pulse (AHS for hyperbolic secant), Session T1, ScanBlock 1
4. AnonymizedVolunteerData-mrm29034_20211012_Riemann-Fillmer.xlsx
Anonymized measurement data for each individual volunteer and measurement:
age, gender, transmit voltage, linewidth, peak voltages for all three pulses (HS, GOIA, WURST), CSF -, gray and white matter fraction in the scanned voxel for each subject.This project (18HLT09 NeuroMET2) has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme
Sky View Factors from Synthetic Fisheye Photos for Thermal Comfort Routing—A Case Study in Phoenix, Arizona
No full textabstract: We generated 5-meter resolution SVF maps for two neighborhoods in Phoenix, Arizona to illustrate fine-scale variations of intra-urban horizon limitations due to urban form and vegetation.Corresponding Author:
Ariane Middel
Arizona State University
[email protected]
On the importance of being earnest about business: overcoming liberal arts students' misconceptions about leadership in corporate change processes
No full textUnfortunately, most students leave the university with little knowledge about decision-making in the public sector. Unless they study towards a management degree, most students experience little to no business education in their curricula. As a consequence, student perceptions of the business world are largely shaped by the fads and stereotypes propagated in ubiquitous business journals available in every airport bookstore worldwide. Since business plays an integral role in society, such unfamiliarity with business may have global social consequences. This article illustrates how a liberal arts class focusing on Europe’s social and political integration employs a comprehensive case study about a corporate transformation process to provide students with insights into corporate leadership and strategic decision making. The article describes how, by reading and discussing the case study in conjunction with articles about organizational learning theory, students learn to effectively challenge the myths they hold about heroic leadership and the newest management fads. A key element in the course focuses on the role organizational politics plays in developing and implementing a new vision, a new organizational structure, and a new global strategy. -- Obwohl Unternehmen eine wichtige Rolle in der Gesellschaft spielen, werden Studenten außerhalb der Betriebswirtschaft noch zu selten an Fragestellungen aus dem Bereich der Unternehmenspolitik herangeführt. Wie strategische Entscheidungen in der Wirtschaft getroffen und umgesetzt und neue Visionen und Organisationsstrukturen entwickelt werden, sollte deshalb auch in das Lehrangebot für Geistes- und Sozialwissenschaftler aufgenommen werden. Dieser Artikel zeigt beispielhaft, wie Studenten, im Rahmen einer Lehrveranstaltung an einer US-amerikanischen Universität, anhand einer umfassenden Fallstudie über den Transformationsprozess des Pharmakonzerns Hoechst zum Global Player Aventis zur aktiven Auseinandersetzung mit Veränderungsprozessen in Unternehmen angeregt werden, die ganz anders sind, als die oft plakativen Managementlösungen, die die Business-Literatur dieser Tage zu bieten hat.
Overcoming dangerous learning: the role of critical reflection in cross-cultural interactions
No full textRapid globalization has increased the need and opportunity for interactions between people from different cultural backgrounds. Experience is often considered the best teacher and experiences with cross-cultural interactions represent important opportunities to learn to deal with differences. Drawing on a collection of 260 cases, this contribution argues that even when people enter into cross-cultural interactions with the intention of learning new ways of seeing and doing things, they often draw conclusions that make them unreceptive to information that might contradict what they already think. Thus, learning from experience can be dangerous when it inhibits inquiry and closes off new knowledge. This contribution illustrates the kinds of dangerous learning we have encountered in our research and presents strategies of critical self-reflection and interaction to generate shared understandings of situations, desired outcomes, and appropriate actions. -- Erfahrungen gelten als wichtige Lernressource, dieser Beitrag hingegen stellt anhand ausgewählter Fallstudien über interkulturelle Interaktionen dar, wie Erfahrungen dem Lernen auch im Wege stehen können. Die Untersuchung zeigt auf, dass auch Akteure, die sich bewusst in interkulturelle Situationen begeben, um neue Sichtweisen zu erlernen, auf eingeübte Interpretationsmuster und Lösungsansätzen zurückgreifen, sobald kulturelle Situationen ihren eigenen Erfahrungen und Vorstellungen widersprechen. Somit wird das unreflektierte Lernen aus Erfahrungen zu einer gefährlichen Strategie, da es die Überprüfung der Annahmen verhindert und neue Erkenntnisse ausschließt. Die Konsequenzen sind sowohl auf individueller wie auch auf organisationaler Ebene von Bedeutung, da Schlussfolgerungen aus Erfahrungslernen oft unkritisch als handlungsleitend für zukünftige Interaktionen im Organisationsgedächtnis gespeichert werden. Dieser Beitrag verdeutlicht, wie dangerous learning zu Stande kommt und entwickelt interaktive Lernstrategien, um dieser Gefahr entgegenzuwirken.
Delftse chemie levert raketten meer stuwkracht: Geel zout: nieuwe raketbrandstof voor de Ariane 5-raket
No full textOp 15 februari 2003 werd met de Ariane 4 de Intelsat satelliet 907 in een baan om de aarde gebracht. Zowel de Ariane 4 (soms) als 5 werken met ammoniumperchloraat als stuwstof, de standaardraketbrandstof voor civiele als militaire toepassingen. Delftse wetenschappers werken aan een krachtigere brandstof, die 7% meer stuwkracht heeft. Dat betekent dat met dezelfde hoeveelheid brandstof 23% meer lading mee kan, wat een waarde van $ 25 miljoen vertegenwoordigd.Innovation SystemsTechnology, Policy and Managemen
Negotiating reality as an approach to intercultural competence
No full textIn an increasingly global business environment, managers must interact effectively with people who have different values, behavioral norms, and ways of perceiving reality. Many jobs now entail an international dimension, so the need to develop intercultural competences has taken on a greater importance for more people in business than ever before. Intercultural competence is the ability to recognize and use cultural differences as a resource for learning and for generating effective responses in specific contexts. We conceive of this as negotiating reality. The approach draws on concepts from international management, sociology, crosscultural psychology, action science and conflict resolution. -- In einer zunehmend globalisierten Umwelt müssen Führungskräfte immer häufiger mit Menschen aus anderen Kulturen zusammenzuarbeiten, die unterschiedliche Wertevorstellungen haben, verschiedene Verhaltensnormen pflegen und ihre jeweils eigene Wahrnehmung der Realität haben. Damit steigt der Bedarf an interkultureller Kompetenz, der Fähigkeit, kulturelle Unterschiede als Lernressourcen zu erkennen und für die jeweilige Situation adäquate Lösungen zu erarbeiten und einzusetzen. Dieser Beitrag beschreibt einen innovativen Ansatz, den wir negotiating reality nennen, der sich aus unterschiedlichen Theoriebereichen, u.a. dem internationalen Management, der Soziologie, der interkulturellen Psychologie, und der Konfliktforschung speist.
Fluid Structure Interaction at the ARIANE-5 Nozzle section by Advanced Turbulence Models
No full textSubstantial requirements for future rocket technologies are the cost-efficient access to orbit as well as the increase in the system reliability. Concerning these requirements a deeper insight into the unsteady phenomena during the start phase of modern launchers is essential. Especially unsteady side-loads, induced by the interaction of flow separation inside the nozzle, the launcher wake and the nozzle structure will play an important role for the design of future main stage propulsion systems. This so called buffeting coupling phenomenon is one of the main challenges during ascent. For the Ariane-5 configuration unsteady Detached Eddy Simulations were carried out under transonic wind tunnel conditions and validated with experimental data. For this configuration also a first coupled simulation of the flow field and the original nozzle structure of an Ariane-5 wind tunnel model is carried out to investigate resonances and loads on the nozzle
Hardware and Algorithmic Advances in B₀ Shimming for High and Ultra-High Field MRI and MRS
No full textLand Grabbing and Home Country Development : Chinese and British Land Acquisitions in Comparative Perspective /
No full textBetween 2000 and 2016, China and the UK acquired large areas of land through investment projects in Sub-Saharan Africa. Illustrated by numerous rich and nuanced empirical accounts of such projects, Ariane Goetz explains the global phenomenon of 'land grabbing' from the perspective of two investor countries. She reflects on Chinese and British public policy, state-society relations, national developmental contexts, ideologies, and international relations and thereby gives insights into the political economies that enable these investments as well as the development ambitions and institutionalized paradigms of which they form a part.Between 2000 and 2016, China and the UK acquired large areas of land through investment projects in Sub-Saharan Africa. Illustrated by numerous rich and nuanced empirical accounts of such projects, Ariane Goetz explains the global phenomenon of 'land grabbing' from the perspective of two investor countries. She reflects on Chinese and British public policy, state-society relations, national developmental contexts, ideologies, and international relations and thereby gives insights into the political economies that enable these investments as well as the development ambitions and institutionalized paradigms of which they form a part.Online resource; title from PDF title page (publisher's Web site, viewed 23. Mai 2019).Includes bibliographical references (pages [305]-368).Added to collection customer.56279.
Recovering and rebuilding from Oregon's 2020 wildfires: key findings and recommendations
No full textreport presented by the Governor's Wildfire Economic Recovery Council ; written and compiled by Matthew Garrett and Ariane Le Chevallier.Title from PDF cover (viewed on March 3, 2022).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
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