Fusion mechanism in fullerene-fullerene collisions -- The deciding role of giant oblate-prolate motion

We provide answers to long-lasting questions in the puzzling behavior of fullerene-fullerene fusion: Why are the fusion barriers so exceptionally high and the fusion cross sections so extremely small? An ab initio nonadiabatic quantum molecular dynamics (NA-QMD) analysis of C$_{60}$+C$_{60}$ collisions reveals that the dominant excitation of an exceptionally "giant" oblate-prolate H$_g(1)$ mode plays the key role in answering both questions. From these microscopic calculations, a macroscopic collision model is derived, which reproduces the NA-QMD results. Moreover, it predicts analytically fusion barriers for different fullerene-fullerene combinations in excellent agreement with experiments

BeSpaceD: Towards a Tool Framework and Methodology for the Specification and Verification of Spatial Behavior of Distributed Software Component Systems

In this report, we present work towards a framework for modeling and checking behavior of spatially distributed component systems. Design goals of our framework are the ability to model spatial behavior in a component oriented, simple and intuitive way, the possibility to automatically analyse and verify systems and integration possibilities with other modeling and verification tools. We present examples and the verification steps necessary to prove properties such as range coverage or the absence of collisions between components and technical details

Contingency learning tracks with stimulus-response proportion no evidence of misprediction costs

We investigate the processes involved in human contingency learning using the color-word contingency learning paradigm. In this task, participants respond to the print color of neutral words. Each word is frequently presented in one color. Results show that participants respond faster and more accurately to words presented in their expected color. In Experiment 1, we observed better performance for high-relative to medium-frequency word-color pairs, and for medium-relative to low-frequency pairs. Within the medium-frequency condition, it did not matter whether the word was predictive of a currently-unpresented color, or the color was predictive of a currently-unpresented word. We conclude that a given word facilitates each potential response proportional to how often they co-occurred. In contrast, there was no evidence for costs associated with violations of high-frequency expectancies. Experiment 2 further introduced a novel word baseline condition, which also provided no evidence for competition between retrieved responses

Recombination activity of iron-gallium and iron-indium pairs in silicon

The recombination activity of iron-gallium (FeGa) and iron-indium (FeIn) pairs in crystalline silicon is studied by means of injection-dependent carrier lifetime measurements on Fe-implanted, Ga- and In-doped p-type silicon wafers of different resistivities (0.3–15Ωcm). Compared to FeB pairs, FeGa and FeIn pairs are found to be much more effective recombination centers in p-type silicon. Using Shockley–Read–Hall statistics we determine the energy level Et of the FeGa-related center to be 0.20eV above the valence-band edge Eν. The strong recombination activity of FeGa is assigned to its large electron-capture cross section σn of 4×10⁻¹⁴cm². The hole-capture cross section σp is 2×10⁻¹⁴cm². For the FeIn-related recombination center, our measurements show that Et=Eν+0.15eV, σn=3.5×10⁻¹³cm², and σp=1.5×10⁻¹⁴cm². Strong illumination with white light is found to dissociate both types of pairs. Storage of the samples in the dark leads to a full repairing of FeGa and FeIn pairs. Lifetime changes measured before and after illumination can be used to determine the interstitialiron concentration in Ga- and In-doped silicon using calibration factors determined from the measured defect parameters.J.S. thanks A. Cuevas and A. Blakers for their hospitality during his research stay at ANU and acknowledges the financial support of the Alexander von Humboldt Foundation. D.M. acknowledges the financial support of the Australian Research Council

Tax revenues in the European Union: Recent trends and challenges ahead

The governments of the European Union are facing important challenges that may impact both their need and their capacity to collect taxes. First, ageing will increase some social spending while reducing the potential of some tax bases such as labour. Second, globalisation has the potential to increase the mobility of capital and of high-skilled workers, making it more difficult to rely on them as a source of revenues. Finally, the desire to shift tax away from labour and to make work pay while retaining the social models will force Member States to find alternative robust tax bases. This paper reviews the most recent trends in taxation in the European Union and discusses several tax policy issues in the light of those coming challenges.Taxation; Welfare State; European Union; ageing; globalisation

Family house, Chrudim

Bakalářská práce je zaměřena na návrh a vypracování projektové dokumentace rodinného domu. Navržený dům se nachází na okraji města Chrudim. Je určený pro čtyř až pětičlennou rodinu. Jedná se o samostatně stojící, nepodsklepený objekt se dvěma nadzemními podlažími. Jeho součástí je terasa a garáž pro jeden osobní automobil. Zastřešení tvoří plochá střecha. Veškeré svislé konstrukce jsou navrženy zděné z tvarovek z lehkého keramického betonu systému Liapor. Stropní konstrukce jsou navrženy z filigránových panelů Liapor z lehkého betonu. Venkovní fasáda objektu bude provedena v kombinaci omítky se škrábanou strukturou a provětrávané dřevěné fasády.The bachelor thesis is focused on the design and working out of a project documentation of a family house. The projected house is situated on the periphery of the town Chrudim. It’s designed for four-to five-member family. It’s a detached house without a basement and with two floors. The terrace and the garage for one car are the parts of the house. The building has a flat roof. All vertical constructions are designed as masonry of the lightweight concrete shaped bricks Liapor. The ceilings are designed of the filigree panels Liapor made of lightweight concrete. The facade of the house will be made in the combination of combed stucco and wooden ventilated facade.