1,502 research outputs found
Synesios und die Theurgie
No full textFocussing on Synesius\’ On Dreams and his first hymn, this article analyses Synesius\’ attitude towards theurgy and discusses it within the context of post-Plotinian Neoplatonism. From this examination, the necessity of a more nuanced approach to this subject which is capable of moving beyond a rigid polarisation between \‘Porphyrian\’ and \‘Iamblichean\’ positions becomes apparent.Ausgehend von Synesios’ Traumbuch und seinem ersten Hymnus geht der Beitrag Synesios’ Einstellung zur Theurgie nach und diskutiert diese im Kontext des nachplotinischen Neuplatonismus. Dabei wird die Notwendigkeit einer differenzierten Sicht auf diese Frage deutlich, die über starre Grenzziehungen zwischen ‚porphyrischen‘ versus ‚jamblicheischen‘ Positionen hinausgeht
Consumer price adjustment under the microscope: Germany in a period of low inflation
No full textWe analyse the adjustment of retail and services prices in a period of low inflation, using a set of individual price data from the German Consumer Price Index which covers the years 1998 to 2003. We strong find evidence of time- and state-dependent price adjustment. Most importantly, the differences in ?unconditional? sectoral price flexibility are found to be linked to input price volatility. --price rigidity,price flexibility,Consumer Price Index,Germany
Real-time forecasting and political stock market anomalies: evidence for the U.S.
No full textUsing monthly data for the period 1953-2003, we apply a real-time modeling approach to investigate the implications of U.S. political stock market anomalies for forecasting excess stock returns. Our empirical findings show that political variables, selected on the basis of widely used model selection criteria, are often included in real-time forecasting models. However, they do not contribute to systematically improving the performance of simple trading rules. For this reason, political stock market anomalies are not necessarily an indication of market inefficiency. --Political stock market anomalies,predictability of stock returns,efficient markets hypothesis,real-time forecasting
Lithium and bipolar depression
No full textKelly1 has recently disputed the recommendations of several international guidelines on the use of lithium in bipolar depression. In his scrutiny, the author points to three main errors that seem to have affected systematically ten international guidelines, namely the Woozle effect (evidence by citation), reference inflation (inappropriate citation of pivotal, generally old, studies) and belief perseverance (inability to modify evidence‐based recommendations despite the presence of contrary data). We concur with the author that the evidence supporting the effectiveness of lithium in acute bipolar depression, and to a lesser degree also in major depressive episodes, remains inadequate.2, 3 A different matter is, in our opinion, to label guidelines recommendations as inaccurate or biased, even if, as the author stated, no deceptive intentions were present
Ligands with Extended π-Systems; Complexation and Reactivity
No full textThe files contain part of the electrochemical, spectroscopic and computational data from the PhD thesis titled:
"Ligands with Extended π-Systems, Complexation and Reactivity"
Author: Lars Killian
Co-promotor: Arnaud Thevenon
Promotor: Pieter C.A. Bruijnincx
Organic Chemistry & Catalysis, Institute for Sustainable and Circular Chemistry
Utrecht Universit
Emerging Middle Powers’ Soft Balancing Strategy: State and Perspectives of the IBSA Dialogue Forum
No full textHow can weaker states influence stronger ones? This article offers a case study of one recent exercise in coalition building among Southern middle powers, the ‘India, Brazil, South Africa (IBSA) Dialogue Forum’. The analysis outlines five major points: first, it argues that the three emerging players can be defined as middle powers in order to frame their foreign policy behavior and options at the global level. Second, soft balancing is a suitable concept to explain IBSA’s strategy in global institutions. Third, institutional foreign policy instruments are of pivotal significance in IBSA’s soft balancing strategy. Fourth, the potential gains of IBSA’s sector cooperation, particularly in trade, are limited due to a lack of complementarity of the three economies. And fifth, IBSA’s perspectives and impact on the international system will depend on four variables: IBSA’s ability to focus on distinct areas of cooperation, the consolidation of its common strategy of soft balancing, the institutionalization of IBSA, and its enlargement in order to obtain more weight in global bargains.India, Brazil, South Africa, IBSA Dialogue Forum, middle power, foreign policy, international relations, South-South relations
Cymbospondylus Leidy 1868
No full textCymbospondylus Leidy, 1868 (14) Type species Cymbospondylus piscosus Leidy, 1868 (14) Referred species Cymbospondylus petrinus Leidy, 1868 (14); Cymbospondylus buchseri (15); Cymbospondylus nichollsi (16); *Corresponding author. Email: [email protected] (P.M.S.); [email protected] (E.M.G.); [email protected] (L.S.) Cymbospondylus duelferi (17); Cymbospondylus youngorum sp. nov. Genus diagnosis For a recent detailed diagnosis of the genus, see (17). In addition, the results of the phylogenetic analysis in this study offer an apomorphy-based diagnosis.Published as part of Sander, P. Martin, Griebeler, Eva Maria, Klein, Nicole, Juarbe, Jorge Velez, Wintrich, Tanja, Revell, Liam J. & Schmitz, Lars, 2021, Early giant reveals faster evolution of large body size in ichthyosaurs than in cetaceans, pp. 1-15 in Science (New York, N. Y.) (New York, N. Y.) 374 (6575) on pages 1-2, DOI: 10.1126/science.abf5787, http://zenodo.org/record/580532
Telecommunications policy in Turkey: restructuring for economic growth. European Policy Paper #11, November 2006
No full textIntroduction. Modern telecommunications technology is now widely seen as a critical driver in economic development. However, the issues involved in the rapid deployment of this technology are complex and frequently highly controversial. While some of these issues are technical, the most difficult ones involve changing a legal and regulatory framework which was originally designed for different times and different technologies. The process of changing this framework necessarily involves disruptive change for existing service providers as well as substantial benefits for the economy at large. This paper seeks to discuss these issues in light of Turkey’s progress to date in taking advantage of advanced available telecommunications technology and the myriad productivity-enhancing services that are associated with it.(1) An important element in developing a more competitive and dynamic sector in Turkey has been the desire of the country to become a member of the European Union. This has encouraged changes in the telecommunications regulatory regime following the guidelines set out in Chapter 19 of the EU “acquis” for candidate members. Nonetheless, substantial further efforts are needed to complete and implement the desired regulatory framework, particularly as it affects the former government monopoly carrier, Turk Telekom, and the cable companies. A further limiting factor has been an overall investment climate in Turkey which has been characterized by a high level of uncertainty for most investors, regardless of size or nationality. Policy recommendations to help accelerate the deployment of telecommunications technology include a clear reaffirmation of the government’s priorities for the sector, a reduction in the level of ownership and regulatory uncertainty, strengthening the Board and Staff of the Telecommunications Authority, and reviewing policies which reduce the scope and increase the cost of telecommunication licenses
A modeler's guide to handle complexity in energy systems optimization
No full textDetermining environmentally- and economically-optimal energy systems designs and operations is complex. In particular, the integration of weather-dependent renewable energy technologies into energy system optimization models presents new challenges to computational tractability that cannot only be solved by advancements in computational resources. In consequence, energy system modelers must tackle the complexity of their models by applying various methods to manipulate the underlying data and model structure, with the ultimate goal of finding optimal solutions. As which complexity reduction method is suitable for which research question is often unclear, herein we review different approaches for handling complexity. We first analyze the determinants of complexity and note that many drivers of complexity could be avoided a priori with a tailored model design. Second, we conduct a review of systematic complexity reduction methods for energy system optimization models, which can range from simple linearization performed by modelers to sophisticated multi-level approaches combining aggregation and decomposition methods. Based on this overview, we develop a guide for energy system modelers who encounter computational limitations
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