1,245 research outputs found
Survey in Geophysics - Special Issue on "Assessment and mitigation of collateral seismic hazards"
No full textENGINEERING GEOLOGY - Special issue "Landslide induced by earthquake and volcanic activity"
No full text
When do special interests run rampant ? disentangling the role in banking crises of elections, incomplete information, and checks and balances
No full textThe author investigates the political determinants of government decisions that benefit special interest groups - especially government decisions to deal with banking crises. He finds that the better informed the voters, the more proximate elections, and the larger the number of political veto players ( conditional on the costs to voters of relevant policy decision), the smaller the government's fiscal transfer are to the financial sector and the less likely the government is to exercise forbearance in dealing with insolvent financial institutions. The results suggest that policies thatmight be appropriate for mitigating banking crises in the United States might be less effective in settings where voters are less informed, where elections are less competitive, and where there are fewer veto players, because in these settings checks and balances are missing. These policies include: a) Disseminating information about the costs of inefficient government decisions. b) Improving the structure of legislative regulatory oversight. c) Intervening early in insolvent banks. The author concludes that the more veto players there are, the less likely policies are to favor special interest groups (contrary to previous views). Moreover, the closer the elections, the less likely policies are to favor special interest groups.
The application of SAR data to the interpretation of landslides.
No full textFall AGU, American Geophysical Union Meeting- S. Francisco, CA, US
The interpretation of landslide monitoring data for movement forecasting; an analysis of data from the Tessina landslide in Italy.
No full textTime-Resolved Optical Pump-Resonant X-ray Probe Spectroscopy of 4-Thiouracil: A Simulation Study
No full textWe theoretically monitor the photoinduced ∗ → n∗ internal conversion process in 4-thiouracil (4TU), triggered by an optical pump. The element-sensitive spectroscopic signatures are recorded by a resonant X-ray probe tuned to the sulfur, oxygen, or nitrogen K-edge. We employ high-level electronic structure methods optimized for core-excited electronic structure calculation combined with quantum nuclear wavepacket dynamics computed on two relevant nuclear modes, fully accounting for their quantum nature of nuclear motions. We critically discuss the capabilities and limitations of the resonant technique. For sulfur and nitrogen, we document a pre-edge spectral window free from ground-state background and rich with ∗ and n∗ absorption features. The lowest sulfur K-edge shows strong absorption for both ∗ and n*. In the lowest nitrogen K-edge window, we resolve a state-specific fingerprint of the ∗ and an approximate timing of the conical intersection via its depletion. A spectral signature of the n∗ transition, not accessible by UV-vis spectroscopy, is identified. The oxygen K-edge is not sensitive to molecular deformations and gives steady transient absorption features without spectral dynamics. The */n∗ coherence information is masked by more intense contributions from populations. Altogether, element-specific time-resolved resonant X-ray spectroscopy provides a detailed picture of the electronic excited-state dynamics and therefore a sensitive window into the photophysics of thiobases
Ultrafast photochemistry and electron-diffraction spectra in n → (3s) Rydberg excited cyclobutanone resolved at the multireference perturbative level
No full textWe study the ultrafast time evolution of cyclobutanone excited to the singlet n -> Rydberg state through non-adiabatic surface-hopping simulationsperformed at extended multi-state complete active space second-order perturbation (XMS-CASPT2) level of theory. These dynamics predict relaxation to the ground-state with a timescale of 822 +/- 45 fs with minimal involvement of the triplets. The major relaxation path to the ground-state involves a three-state degeneracy region and leads to a variety of fragmented photoproducts. We simulate the resulting time-resolved electron-diffraction spectra, which track the relaxation of the excited state and the formation of various photoproducts in the ground state
Contract enforcement and Argentina's long-run decline
No full textArgentina has slipped from being among the ten richest countries in the world by the eve of World War I to its current position close to developing countries. Why did Argentina fall behind? In this paper we employ a structural model to investigate the extent to which contract enforcement, as captured by Clague, Keefer, Knack, and Olson's "Contract Intensive Money", conditioned broad capital accumulation and economic growth in Argentina and, consequently, the country's relative international position. Our results suggest that poor contract enforcement played a major role in Argentina's unique experience of long-run economic decline
Politics and the Determinants of Banking Crises: the Effects of Political Checks and Balances
No full textA large body of research has provided significant insights into the financial and macroeconomic causes of banking crises. Many of these causes - ranging from lapses in financial regulation to determined efforts to maintain a fixed exchange rate - have in common their origins as policy decisions of political actors. Numerous non-technical criteria, ranging from the identity and interests of political constituencies to political and electoral institutions, condition the incentives of political decision makers to make or correct policy "mistakes". This paper explores the role of one significant political institution, the presence or absence of political checks and balances. Checks and balances influence the independence of regulators, the value and cost of special interest payoffs to policy makers, and individual political incentives to avoid collective policy failures. The evidence suggests that the financial and economic causes of crisis, consistent with these arguments, differ significantly in countries that exhibit few or many political checks and balances.
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