Noise event measures for road traffic

How should noise events in road traffic noise be measured? This paper reports the performance of a set of algorithms that detect noise events in time histories of road traffic noise in the population of acoustic conditions found near roadways. The latter was obtained through simulation of 500 different road traffic noise time histories using a comprehensive range of traffic flow, traffic composition, and propagation distance, conditions in unshielded locations near roadways. The initial set of algorithms tested was developed by systematically expanding on threshold-based algorithms described in the literature, then excluding those that were unreliable. The finding was that the NA50 and NA55 (detecting when road traffic noise exceeded 50 dB and 55 dB respectively), and the NAL50E10 (detecting when the traffic levels exceeded L50 + 10 dB) can all be considered for practical application as event detection indicators. All apply to measurement of indoor events with the windows of the dwelling open. The primary criterion for selection as supplementary indicators (and others in the same clusters that could substitute for them) was their non-monotonic relationship with the LAeq, The traffic and distance conditions under which these event-based measures could potentially be useful supplementary indicators is identified.Griffith Sciences, Griffith School of EnvironmentFull Tex

Europa's Optical Aurora

Auroral emissions provide opportunities to study the tenuous atmospheres of Solar System satellites, revealing the presence and abundance of molecular and atomic species as well as their spatial and temporal variability. Far-UV aurorae have been used for decades to study the atmospheres of the galilean satellites. Here we present the first detection of Europa's visible-wavelength atomic oxygen aurora at 6300/6364 \AA{} arising from the metastable O$(^1$D) state, observed with the Keck I and Hubble Space Telescopes while Europa was in eclipse by Jupiter on six occasions in February-April 2018. The disk-integrated O($^1$D) brightness varies from $<$500 R up to more than 2 kR between dates, a factor of 15 higher than the OI 1356 \AA{} brightness on average. The ratio of emission at 6300/5577 \AA{} is diagnostic of parent molecule; the 5577 \AA{} emission was not detected in our dataset, which favors O$_2$ as the dominant atmospheric constituent and rules out an O/O$_2$ mixing ratio above 0.35. For an O$_2$ atmosphere and typical plasma conditions at Europa's orbit, the measured surface brightness range corresponds to column densities of 1-9$\times$10$^{14}$ cm$^{-2}$

Measurement of noise events in road traffic streams: initial results from a simulation study

A key question for road traffic noise management is whether prediction of human response to noise, including sleep quality, could be improved over the use of conventional energy equivalent, or percentile, measures, by accounting for noise events in road traffic streams. This paper reports initial results from a noise-events investigation into event-based indicators over an exhaustive set of traffic flow, traffic composition, and propagation distance, conditions in unshielded locations in proximity to roadways. We simulate the time-varying noise level histories at various distances from roadways using a dynamic micro-traffic model and a distribution of sound power levels of individual vehicles. We then develop a comprehensive set of noise event indicators, extrapolated from those suggested in the literature, and use them to count noise events in these simulated time histories. We report the noise-event algorithms that produce realistic, and reliable, counts of noise events for one-hour measurement periods, then reduce redundancy in the indicator set by suggesting a small number of representative event indicators. Later work will report the traffic composition and distance conditions under which noise event measures provide information uncorrelated with conventional road traffic noise indicators &mdash; and which thus may prove useful as supplementary indicators to energy-equivalent measures for road traffic noise

Foreign banks and foreign currency lending in emerging Europe

Based on survey data from 193 banks in 20 countries we provide the first bank-level analysis of the relationship between bank ownership, bank funding and foreign currency (FX) lending across emerging Europe. Our results contradict the widespread view that foreign banks have been driving FX lending to retail clients as a result of easier access to foreign wholesale funding. Our cross-sectional analysis shows that foreign banks do lend more in FX to corporate clients but not to households. Moreover, we find no evidence that wholesale funding had a strong causal effect on FX lending for either foreign or domestic banks. Panel estimations show that the foreign acquisition of a domestic bank does lead to faster growth in FX lending to households. However, this is driven by faster growth in household lending in general not by a shift towards FX lending.Foreign banks; FX lending; financial integration; Emerging Europe

Foreign Currency Lending in Emerging Europe: Bank Level Evidence

Based on survey data from 193 banks in 20 countries we provide the first bank-level analysis of the determinants of foreign currency (FX) lending in Emerging Europe. We find that FX lending by all banks, regardless of their ownership structure, is strongly determined by the macroeconomic environment. We find no evidence of foreign banks ‘pushing’ FX loans indiscriminately because of easier access to wholesale funding in foreign currency. In fact, while foreign banks do lend more in FX to corporate clients, they do not do so to retail clients. We also find that after a take-over by a foreign bank, the acquired bank does not increase its FX lending any faster than a bank which remains in domestic hands.Foreign currency lending;currency mismatch;foreign banks;financial stability

Foreign currency lending in emerging Europe: bank-level evidence

Based on survey data from 193 banks in 20 countries we provide the first bank-level analysis of the determinants of foreign currency (FX) lending in emerging Europe. We find that FX lending by all banks, regardless of their ownership structure, is strongly determined by the macroeconomic environment. We find no evidence of foreign banks ‘pushing’ FX loans indiscriminately because of easier access to wholesale funding in foreign currency. In fact, while foreign banks do lend more in FX to corporate clients, they do not do so to retail clients. We also find that after a take-over by a foreign bank, the acquired bank does not increase its FX lending any faster than a bank which remains in domestic hands.

Prior upper body exercise reduces cycling work capacity but not critical power

Purpose: This study examined whether metabolite accumulation, induced by prior upper body exercise, affected the power–duration relationship for leg cycle ergometry