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In the nineties, Habermas redirected his political writings to the post-national constellation (global and European) and the possibilities of a society politically integrated through transnational democracy (or post-national democracy). This thematic reorientation took place on two fronts. The first one is the global transnational democracy, which includes the impacts of the economic globalization on national democracies, as well the proposal for a political Constitution for a pluralistic world society, based on a constitutionalization of international law. The second one is the European transnational democracy, which includes the redefinition of the political profile of European welfare state for an economic liberal profile, as well the paradox of democratic technocracy operated by European institutions and the proposal to overcome the decoupled technocratic policy model. This paper will address only this last topic, describing the reasons of the democratic deficit and the consequent delay of European political Union. Despite numerous reforms, the technocratic policies have not eliminated the discrepancy between centralization and democratization, and mistakenly indicate another direction further reinforcing the problem of European undemocratic institutions. In contrast, Habermas argues that the democratic deficit could only be overcome replacing the technocratic approach by a deeper democratization of European institutions.
Abstract: Fine-scale temporal organization of cortical activity in the gamma range (∼25–80Hz) may play a significant role in information processing, for example by neural grouping ('binding') and phase coding. Recent experimental studies have shown that the precise frequency of gamma oscillations varies with input drive (e.g. visual contrast) and that it can differ among nearby cortical locations. This has challenged theories assuming widespread gamma synchronization at a fixed common frequency. In the present study, we investigated which principles govern gamma synchronization in the presence of input-dependent frequency modulations and whether they are detrimental for meaningful input-dependent gamma-mediated temporal organization. To this aim, we constructed a biophysically realistic excitatory-inhibitory network able to express different oscillation frequencies at nearby spatial locations. Similarly to cortical networks, the model was topographically organized with spatially local connectivity and spatially-varying input drive. We analyzed gamma synchronization with respect to phase-locking, phase-relations and frequency differences, and quantified the stimulus-related information represented by gamma phase and frequency. By stepwise simplification of our models, we found that the gamma-mediated temporal organization could be reduced to basic synchronization principles of weakly coupled oscillators, where input drive determines the intrinsic (natural) frequency of oscillators. The gamma phase-locking, the precise phase relation and the emergent (measurable) frequencies were determined by two principal factors: the detuning (intrinsic frequency difference, i.e. local input difference) and the coupling strength. In addition to frequency coding, gamma phase contained complementary stimulus information. Crucially, the phase code reflected input differences, but not the absolute input level. This property of relative input-to-phase conversion, contrasting with latency codes or slower oscillation phase codes, may resolve conflicting experimental observations on gamma phase coding. Our modeling results offer clear testable experimental predictions. We conclude that input-dependency of gamma frequencies could be essential rather than detrimental for meaningful gamma-mediated temporal organization of cortical activity.
Author Summary: Almost 350 years ago the physicist and polymath Christiaan Huygens first observed the synchronization between two pendulum clocks attached to a common support. Since then synchronization has been recognized as a universal phenomenon from astronomy to biology. The phase-locking (synchrony) and the phase-relation between the two pendulums are determined by two principal forces: the synchronization force exerted over the connection and the tendency to desynchronize due to frequency (speed) differences. We propose that gamma synchronization (25–80Hz) among oscillating cortical neurons in the brain can be understood according to the same principles—like a field of many connected pendula—with the critical addition that input changes the frequency of gamma oscillations, as shown by recent experimental studies. It has been assumed that input-dependent changes in oscillation frequency are detrimental for a meaningful role of gamma synchronization in neural processing. To the contrary, our theoretical analysis demonstrates that because input can change the frequency of the oscillation, phase-locking and phase-relations among neurons relate systematically to input. By analogy, it is because a local push to a pendulum will change its frequency, that resulting changes in phase-locking and phase-relation among the pendula can be used to derive the external force applied.
What happened to the tremendous legacy of juridical knowledge left behind in Italy in the 6th century? Into what labyrinth did it plunge only to re-emerge after the silent age of the early Middle Ages into the light of day, and effectively come to shape the renewal of the jurisprudence at the beginning of the 12th century? One-and-a-half centuries after the fanciful writings of Hermann Fitting, legal historians are still looking for the answers to these questions. Considering the new information we have (especially coming from the paleographical research), this paper re-examines the existence as well as the activities of the school of Rome both during the Justinian Age and in the two centuries thereafter. The aim of this essay is to verify whether Rome, during the very early Middle Ages, continued to represent a centre of juridical culture. According to the hypothesis developed in this contribution, Rome – at that time – not only played a very important role with regard to the material conservation of the Justinian’s libri legales, but also in the initial establishment of the new (i. e., Justinian) imperial law in the West and creation of its image as a significant juridical centre. The absence of such a centre as well as its wide-spread image would truly make the Bolognese renovatio appear "miraculous" and very difficult to explain.
After Justinian, the 7th and 8th centuries can truly be characterised as "silent" in the history of Roman law in the West. However, by studying the medieval manuscript tradition, in particular, that of the Institutiones and the Novellae, we can gather together a series of elements helping us to clarify the situation. Also quite useful is an examination of the manuscript tradition of the Collatio legum Mosaicarum et Romanarum. Through the spread and use of these Late Antique works, we can see how – in conjunction with the actions of the papacy – Rome, toward the end of the 8th century, returned to being a centre of world politics and – given that law follows politics – of the legal culture.
WE DECOMPOSE INDIVIDUAL INVESTORS’ PORTFOLIO RETURNS INTO PASSIVE BENCHMARK RETURNS, ACTIVE SECURITY SELECTION RETURNS, AND ACTIVE MARKET TIMING RETURNS. FOR THE AVERAGE INVESTOR IN OUR SAMPLE, PASSIVE BENCHMARK RETURNS EXPLAIN SOME 40% OF VARIATION IN LONGITUDINAL PORTFOLIO RETURNS, SECURITY SELECTION EXPLAINS AN ADDITIONAL 50%, AND MARKET TIMING PLAYS ONLY A MINOR ROLE. THIS STANDS IN STARK CONTRAST TO EARLIER RESULTS ON INSTITUTIONAL INVESTORS WHERE PASSIVE BENCHMARK RETURNS (REFLECTING DIFFERENT ASSET ALLOCATION STRATEGIES) EXPLAIN OVER 90%. THE PREDOMINANCE OF SECURITY SELECTION COMES AT A COST FOR INDIVIDUAL INVESTORS: INVESTORS FROM THE HIGHEST QUINTILE IN TERMS OF SECURITY SELECTION ACTIVITY UNDERPERFORM THEIR PEERS FROM THE LOWEST QUINTILE BY MORE THAN 10 PERCENTAGE POINTS PER YEAR. TRANSACTION COSTS EXPLAIN ONLY PART OF THIS UNDERPERFORMANCE. THE LESS INVESTORS DIVERSIFY, THE WORSE THEY DO.
In diesem Jahr hat sich die Paul Ehrlich-Stiftung für zwei Preisträger entschieden, die sich den mit 100.000 Euro dotierten Paul Ehrlich- und Ludwig Darmstaedter-Preis teilen. Am 14.03.2015 überreichte Professor Harald zur Hausen, der Vorsitzende des Stiftungsrates, in der Frankfurter Paulskirche den Preis an Professor James P. Allison vom MD Anderson Cancer Center in Houston (Foto Mitte) und an Professor Carl H. June von der Universität Pennsylvania in Philadelphia (r.). Professor Raja Atreya vom Universitätsklinikum in Erlangen (l.) erhielt den Paul Ehrlich- und Ludwig Darmstaedter-Nachwuchspreis.
Background: The objective measurement of the mechanical component and its role in chronic ankle instability is still a matter of scientific debate. We analyzed known group and diagnostic validity of our ankle arthrometer. Additionally, functional aspects of chronic ankle instability were evaluated in relation to anterior talar drawer.
Methods: By manual stress testing, 41 functionally unstable ankles were divided as mechanically stable (n = 15) or mechanically unstable (n = 26). Ankle laxity was quantified using an ankle arthrometer. Stiffness values from the load displacement curves were calculated between 40 and 60 N. Known group validity and eta2 were established by comparing manual and arthrometer testing results. Diagnostic validity for the ankle arthrometer was determined by a 2 × 2 contingency table. The functional ankle instability severity was quantified by the German version of the Foot and Ankle Ability Measure (FAAM-G). Stiffness (40–60 N) and FAAM-G values were correlated.
Results: Mechanically unstable ankles had lower 40–60 N stiffness values than mechanically stable ankles (p = 0.006 and <0.001). Eta for the relation between manual and arthrometer anterior talar drawer testing was 0.628. With 5.1 N/mm as cut-off value, accuracy, sensitivity, and specificity were 85%, 81%, and 93%, respectively. The correlation between individual 40–60 N arthrometer stiffness values and FAAM-G scores was r = 0.286 and 0.316 (p = 0.07 and 0.04).
Conclusions: In this investigation, the ankle arthrometer demonstrated a high diagnostic validity for the determination of mechanical ankle instability. A clear interaction between mechanical (ankle arthrometer) and functional (FAAM-G) measures could not be demonstrated.
Dies ist der zehnte Artikel unseres Blogfokus „Salafismus in Deutschland“.
Was macht salafistisches Denken in religiöser Hinsicht aus? Was hat Salafismus mit Wahhabismus zu tun? Was hat Dschihadismus mit Salafismus zu tun? Alles Fragen, auf die es keine einfachen Antworten gibt. Trotzdem lohnt der Versuch, eine Antwort zu geben, da die religiösen Vorstellungen zentral für die Identität des Salafismus sind. Es geht hier „nur“ um die religiösen Ideen, die immer wieder in salafistischen Diskussionen auftreten. Freilich ist die innersalafistische Debatte vielgestaltig, so dass sich kein „Katechismus“ aufstellen lässt, der ausweist, woran ein/e SalafistIn glaubt. Deshalb werden im Folgenden entlang einzelner Stränge des salafistischen Diskurses ausgewählte religiöse Ideen beleuchtet....