Bremsstrahlung from relativistic heavy ions in a fixed target experiment at the LHC

We calculate the emission of bremsstrahlung from lead and argon ions in A Fixed Target ExpeRiment (AFTER) that uses the LHC beams. With nuclear charges of $Ze$ equal $208$ and $18$ respectively, these ions are accelerated to energies of $7$ TeV$\times Z$. The bremsstrahlung peaks around $\approx 100$ GeV and the spectrum exposes the nuclear structure of the incoming ion. The peak structure is significantly different from the flat power spectrum pertaining to a point charge. Photons are predominantly emitted within an angle of $1/\gamma$ to the direction of ion propagation. Our calculations are based on the Weizs\"{a}cker-Williams method of virtual quanta with application of existing experimental data on photonuclear interactions.Comment: 9 pages, 3 figures. Submitted to Advances in High Energy Physic

Access regulation and cross-border mergers: Is international coordination beneficial?

The international integration of regulated markets poses new challenges for regulatory policy. One question is the implications that the overall international regulatory regime will have for cross-border and/or domestic merger activity. In particular, do non-coordinated policies stimulate cross-border mergers that are overall inefficient, and is this then an argument for international coordination of such policies? The paper addresses this issue in a setting where firms must have access to a transportation network which is controlled by national regulators. The analysis reveals that while non-coordinated regulatory policies may induce cross-border mergers (by allowing the firms in question to play national regulators out against each other), this can nevertheless be overall welfare enhancing compared to market outcomes under coordinated regulation.Access regulation; Endogenous merger; Policy coordination

Cross border mergers and strategic trade policy with two-part taxation: is international policy coordination beneficial?

We analyse how national taxation of firms are likely to affect merger incentives in international markets. In particular, we ask whether non-coordinated trade policies stimulate cross-border mergers that are overall inefficient, and if this is then an argument for international coordination of such policies? We address this issue in a setting where policy makers use two-part tariffs to tax exporting firms. The analysis reveals that while non-coordinated policies may induce cross-border mergers (by allowing the firms in question to play national policy makers out against each other), this can nevertheless be overall welfare enhancing compared to market outcomes under coordinated policy making. -- Das Papier untersucht die möglichen Wirkungen der nationalen Besteuerung auf Anreize für Fusionen in internationalen Märkten. Dabei wird vor allem gefragt, ob unkoordinierte Handelspolitik zu grenzüberschreitenden Fusionen führt, die insgesamt ineffizient sind und ob das für die internationale Koordination der Handelspolitik spricht. Im vorgestellten Modellrahmen nutzen Politikentscheider zweiseitige Zölle um Exportfirmen zu besteuern. Die Untersuchung zeigt, dass zwar nichtkoordinierte Politik grenzüberschreitende Fusionen hervorbringt, indem die beteiligten Firmen ihre nationalen Gesetzgeber gegeneinander ausspielen können; allerdings ist das Ergebnis durchaus wohlfahrtssteigernd im Vergleich zu dem Marktergebnis, das sich aus koordinierter Handelspolitik ergibt.Strategic trade policy,two-part taxation,endogenous merger,policy coordination

FEM Updating of the Heritage Court Building Structure

This paper describes results of a model updating study conducted on a 15-storey reinforced concrete shear core building. The output-only modal identification results obtained from ambient vibration measurements of the building were used to update a finite element model of the structure. The starting model of the structure was developed from the information provided in the design documentation of the building. Different parameters of the model were then modified using an automated procedure to improve the correlation between measured and calculated modal parameters. Careful attention was placed to the selection of the parameters to be modified by the updating software in order to ensure that the necessary changes to the model were realistic and physically realisable and meaningfull. The paper highlights the model updating process and provides an assessment of the usefulness of using an automatic model updating procedure combined with results from an output-only modal identification

Cross-border mergers and strategic trade policy with two-part taxation: is international policy coordination beneficial?

"Das Papier untersucht die möglichen Wirkungen der nationalen Besteuerung auf Anreize für Fusionen in internationalen Märkten. Dabei wird vor allem gefragt, ob unkoordinierte Handelspolitik zu grenzüberschreitenden Fusionen führt, die insgesamt ineffizient sind und ob das für die internationale Koordination der Handelspolitik spricht. Im vorgestellten Modellrahmen nutzen Politikentscheider zweiseitige Zölle um Exportfirmen zu besteuern. Die Untersuchung zeigt, dass zwar nichtkoordinierte Politik grenzüberschreitende Fusionen hervorbringt, indem die beteiligten Firmen ihre nationalen Gesetzgeber gegeneinander ausspielen können; allerdings ist das Ergebnis durchaus wohlfahrtssteigernd im Vergleich zu dem Marktergebnis, das sich aus koordinierter Handelspolitik ergibt." (Autorenreferat)"We analyse how national taxation of firms are likely to affect merger incentives in international markets. In particular, we ask whether non-coordinated trade policies stimulate cross-border mergers that are overall inefficient, and if this is then an argument for international coordination of such policies? We address this issue in a setting where policy makers use two-part tariffs to tax exporting firms. The analysis reveals that while non-coordinated policies may induce cross-border mergers (by allowing the firms in question to play national policy makers out against each other), this can nevertheless be overall welfare enhancing compared to market outcomes under coordinated policy making." (author's abstract