A window of opportunity? The foundation of the University of Luxembourg and the impact of a changing international higher education environment

Scientific Conference (2014, September 03)

Wine as an Investment

Doctoral thesis (2018)

During the last two decades, the wine auction market experienced non-monotonic dynamics and provided abnormal returns. When fine wine prices started to rise in the mid-1980s, wine investing transcended ... [more ▼]

During the last two decades, the wine auction market experienced non-monotonic dynamics and provided abnormal returns. When fine wine prices started to rise in the mid-1980s, wine investing transcended from a pastime into a serious investment transforming wine into a widespread investment activity. As an alternative asset, fine wine attracts increased attention among individual and institutional investors in recent years, particularly during the financial crisis due to its diversification potential. Economists also began evaluating wine as a new alternative asset class. In this thesis, we review the wine auction markets, study the price dynamics, and answer some fundamental questions. To build solid conclusions, we developed the largest French wine auction database encompassing the last 20 years. We summary our main contributions as follows. First, we review and explain the growth in recent global wine auction markets. Second, we construct price indices with hedonic regression models to observe market movements. Third, we investigate wine investment’s diversification potential. Wine in an optimal portfolio can improve the risk-return characteristics; however, the augmentation depends significantly on the market segmentation to which the investor applies it. Fourth, we analyze the wine price bubbles and collapses detection using a newly developed econometric approach. We elucidate strong evidence of two bubbles in the Bordeaux and Burgundy wine auction markets, whereas Rhône wine price behaved in a similar, but less significant, trend as Bordeaux and Burgundy wine markets. Finally, we examine the price determinants with a particular focus on the expert effect on this experienced good. We illuminate expert influence remains economically and statistically significant throughout the sample period. Using event study methodology, we disentangle the expert effect from other price variations and assert the market significantly reflects expert’s big re-ratings in the short term, yet the effect diminishes over time. However, this re-rating effect holds insignificant for modest changes. [less ▲]

Winter School on Galois Theory, Volume 1

Book published by University of Luxembourg / Campus Kirchberg (2013)

Galois Theory plays a key role in many mathematical disciplines, such as number theory, algebra, topology, and geometry. This special volume of the Luxembourg based peer-reviewed mathematics journal ... [more ▼]

Galois Theory plays a key role in many mathematical disciplines, such as number theory, algebra, topology, and geometry. This special volume of the Luxembourg based peer-reviewed mathematics journal "Travaux mathématiques" unites two instructional texts that have grown out of lectures delivered at the Winter School on Galois Theory held at the University of Luxembourg in February 2012. The contribution by Wulf-Dieter Geyer is about "Field Theory". It can be considered as a textbook in its own right. It manages to start at the level that any student possesses after any introductory algebra course and nevertheless to lead the reader to very advanced field theory at the frontier of current research, and to cover a wealth of material. Many examples are contained, which nicely enlighten the presented concepts, very often providing counterexamples that show why certain hypotheses are necessary. One also finds a chapter on the history of field theory as well as other historical remarks throughout the text. The second contribution addresses "Profinite Groups". It is written by Luis Ribes, who is the author of two standard books on this subject. Being necessarily much shorter than the two books, it has the feature of presenting an overview stressing the main concepts and the links with Galois Theory. Since for those proofs which are not included precise references are given, the notes, due to their conciseness and nevertheless great amount of material, constitute an excellent starting point for any Master or PhD student willing to learn this subject. [less ▲]

Der wintschaffene (wetterwendische) Christus und die Transparenz der Dichtung in Gottfrieds von Straßburg ‚Tristan‘

in Zeitschrift für Germanistik. Neue Folge (2000), 10

“Wir haben das Mega-Orange gemacht!” – Vorschulkinder konstruieren sich als Lernende in hybriden Räumen.

Scientific Conference (2008, March 19)

"wir können ganze Märkte deregulieren wie Flüsse". Die Rhetorik des Finanzmarktes in Elfriede Jelineks "Die Kontrakte des Kaufmanns"

in Bloch, Natalie (Ed.) Elfriede Jelinek "Begegnungen im Grenzgebiet" (2014)

'...wir reden nicht direkt drüber, aber wir leben es...' – Praxen des Umgangs mit migrationsbedingter Heterogenität und Differenz in Kindertageseinrichtungen.

in Berndt, Constanze; Walm, Maik (Eds.) In Orientierung begriffen. Interdisziplinäre Perspektiven auf Bildung, Kultur und Kompetenz (2013)

Wir stehen an einem Scheideweg

Article for general public (2017)

Wireless Edge Caching: Modeling, Analysis, and Optimization

Book published by Cambridge University Press (2020)

Understand both uncoded and coded caching techniques in future wireless network design. Expert authors present new techniques that will help you to improve backhaul, load minimization, deployment cost ... [more ▼]

Understand both uncoded and coded caching techniques in future wireless network design. Expert authors present new techniques that will help you to improve backhaul, load minimization, deployment cost reduction, security, energy efficiency and the quality of the user experience. Covering topics from high-level architectures to specific requirement-oriented caching design and analysis, including big-data enabled caching, caching in cloud-assisted 5G networks, and security, this is an essential resource for academic researchers, postgraduate students and engineers working in wireless communications. [less ▲]

Wireless Information and Power Transfer: A New Paradigm for Green Communications

Book published by Springer (2017)