5,870 research outputs found
Credit constraints and the propagation of the Great Depression in Germany
We evaluate the role played by loan supply shocks in the decline of investment and industrial production during the Great Depression in Germany from 1927 to 1932. We identify loan supply shocks in the context of a time varying parameter vector autoregression with stochastic volatility.
Our results indicate that credit constraints were a significant driver of industrial production
between 1927 and 1932, supporting the view that a structurally weak banking sector was an
important contributor to the German Great Depression. We find further that loan supply shocks were an important driver of investment in the early phase of the depression, between 1927 and 1929, but not between 1930 and 1932. We suggest possible explanations for this puzzle and directions for future research
Note on VCG vs. Price Raising for Matching Markets
In \cite{EK10} the use of VCG in matching markets is motivated by saying that
in order to compute market clearing prices in a matching market, the auctioneer
needs to know the true valuations of the bidders. Hence VCG and corresponding
personalized prices are proposed as an incentive compatible mechanism. The same
line of argument pops up in several lecture sheets and other documents related
to courses based on Easley and Kleinberg's book, seeming to suggest that
computing market clearing prices and corresponding assignments were \emph{not}
incentive compatible. Main purpose of our note is to observe that, in contrast,
assignments based on buyer optimal market clearing prices are indeed incentive
compatible
Stability of marginally outer trapped surfaces and existence of marginally outer trapped tubes
The present work extends our short communication Phys. Rev. Lett. 95, 111102
(2005). For smooth marginally outer trapped surfaces (MOTS) in a smooth
spacetime we define stability with respect to variations along arbitrary
vectors v normal to the MOTS. After giving some introductory material about
linear non self-adjoint elliptic operators, we introduce the stability operator
L_v and we characterize stable MOTS in terms of sign conditions on the
principal eigenvalue of L_v. The main result shows that given a strictly stable
MOTS S contained in one leaf of a given reference foliation in a spacetime,
there is an open marginally outer trapped tube (MOTT), adapted to the reference
foliation, which contains S. We give conditions under which the MOTT can be
completed. Finally, we show that under standard energy conditions on the
spacetime, the MOTT must be either locally achronal, spacelike or null.Comment: 33 pages, no figures, typos corrected, minor changes in presentatio
Large negotiable certificates of deposit
Certificates of deposit ; Money market
What does it mean to be a 'national' gallery when the notions of 'nation' transform radically?: An analysis of the Iziko South African National Gallery's practices and policies in historical contexts
Includes bibliographical references.While much has been written on the European display of non - western art and artefact collected from their colonies in Africa, less has been documented about the European settler arts institutions, like the South African National Gallery (SANG), whose distant location away from the imperial centre initially presented particular challenges. In South Africa, since colonialism, these challenges have been expanded by settler nationalisms, a racially oppressive regime, a liberation movement, and a relatively peaceful transition to a democracy. In its form and its function, the SANG has reflected the redefined nationalisms that accompanied these historical moments. In light of the global history of national galleries and more recent theoretical discussions about cultural institutions, this study probes the complex layering of histories evidenced in collection and exhibition practices at the SANG in its historical contexts. Historically South African galleries have reflected colonial and later apartheid ideologies. With the transition to a democratic society in 1994, the ânewâ South Africa ushered in a radically redefined national identity. If national collections reflect the nations to which they belong, this study questions the SANGâs ability in reflecting successive redefinitions of South African nationhood, and its adaptability in meeting shifting social and political requirements. By examining shifts in collections and display practices and policies, in the SANGâs historical contexts, this paper ultimately asks the question: What does it mean to be a ânationalâ gallery when the notions of ânationâ transform radically
Incidental radiological finding of a renal tumour leading to the diagnosis of Birt-Hogg-Dubé syndrome
Birt-Hogg-Dubé (BHD) syndrome is a rare autosomal dominant condition characterised by benign tumours of the hair follicle, renal cancer, pulmonary cysts and spontaneous pneumothorax. We report the diagnosis of a BHD syndrome achieved after incidental radiological finding of a renal tumour in a 24-year old man. The patient also displayed recurrent pneumothoraces and showed to have cysts in the basis of both lungs. The association of recurrent pneumothoraces and renal neoplastic disease should alert for the possible presence of this syndrome
AbhĂ€ngigkeitserkrankungen und Persönlichkeitsstörungen: Ăbersicht aus neurobiologischer und psychodynamischer Perspektive
Zusammenfassung: AbhĂ€ngigkeitserkrankungen und Persönlichkeitsstörungen treten klinisch hĂ€ufig gemeinsam auf. In dieser Ăbersicht werden klinische und neurobiologische Befunde dargestellt, die durch psychodynamische Ăberlegungen ergĂ€nzt werden. Dies geschieht mit dem Ziel, ein Vorgehen fĂŒr die psychotherapeutische Behandlung abhĂ€ngigkeitserkrankter Patienten mit und ohne Persönlichkeitsstörung zu entwickeln. Der Substanzkonsum beginnt hĂ€ufig mit einer Form der Selbstmedikation. Patienten mit Persönlichkeitsstörungen versuchen, durch den Substanzkonsum AffektĂŒberflutungen zu vermeiden und ihren Selbstwert zu regulieren. Bei der chronischen AbhĂ€ngigkeitserkrankung kommt es zu strukturellen VerĂ€nderungen im Gehirn. Die klinischen Symptome der AbhĂ€ngigkeitserkrankung erschweren dabei hĂ€ufig die Diagnostik einer spezifischen Persönlichkeitsstörung. Die Behandlung erfolgt nach den Schwergraden der AbhĂ€ngigkeitserkrankung und der Persönlichkeitsstörung. Bei einer AbhĂ€ngigkeitserkrankung können suchtspezifische Therapiemethoden angewandt werden. Bei der KomorbiditĂ€t aus AbhĂ€ngigkeitserkrankung und schwerer Persönlichkeitsstörung werden störungsspezifische Psychotherapieverfahren mit Erfolg eingesetz
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