Inverse Scattering from a Sound-Hard Crack via Two-Step Method

We present a two-step method for recovering an unknown sound-hard crack in ℝ2 from the measured far-field pattern. This method, based on a two-by-two system of nonlinear integral equations, splits the reconstruction into two consecutive steps which consists of a forward and an inverse problems. In this spirit, only the latter needs to be regularized

EFFECTS OF WHOLE BODY VIBRATION TRAINING ON KNEE EXTENSOR MUSCLE STRENGTH AND RATE OF FORCE DEVELOPMENT

This study compared the effects of 8-week whole-body vibration (WBV) training programs on knee extensor muscle strength and rate of force development. Twenty physically active male subjects were randomly assigned to a whole-body vibration training group (WBV; n =10) or a sham training group (SHAM; n = 10). Maximal voluntary isometric joint moment, rate of force development (RFD) and contractile impulse of the knee extensors were assessed before and after the training period. There were significant differences between WBV and sham groups on improvement percentage of maximum joint moment, RFD and contractile impulse in knee extensor. We concluded that not only knee extensor muscle strength could be enhanced but also muscle contractile abilty could be faster after a 8-week WBV training program

Regional institutions, financial analysts and stock price informativeness

This paper investigates the impact of legal institutions on the external governance role of equity analysts in enhancing the corporate information environment. By analysing a sample of Chinese listed firms between 2003 and 2013, we find that analyst coverage is positively related to stock price informativeness. Firms located in provinces where legal institutions are stronger, as indicated by better development of market intermediaries and lower levies and charges on firms, are less likely to withhold value-relevant information. Financial analysts play a more effective role in improving stock informativeness in provinces with less developed legal institutions

Price discovery and volatility transmission in Australian REIT cash and futures markets

This study examines the price discovery function and volatility spillovers in australian real estate investment trust (A-REIT) index futures and also investigates the effects of the global fi- nancial crisis (gfc) on these two features. as opposed to the general understanding of the relationship between the cash and the futures markets, the current study finds that the A-REIT cash market led the a-reIt futures market in price discovery and volatility transmission processes before the gfc. However, during the GFC, the two markets interacted bilaterally in terms of information flow, i.e., in- formation flowed in both directions. Furthermore, after the GFC, the futures market followed the cash market again, but less closely. These findings have broad implications for investors in property assets