Measurements of three-dimensional glenoid erosion when planning the prosthetic replacement of osteoarthritic shoulders.

The three-dimensional (3D) correction of glenoid erosion is critical to the long-term success of total shoulder replacement (TSR). In order to characterise the 3D morphology of eroded glenoid surfaces, we looked for a set of morphological parameters useful for TSR planning. We defined a scapular coordinates system based on non-eroded bony landmarks. The maximum glenoid version was measured and specified in 3D by its orientation angle. Medialisation was considered relative to the spino-glenoid notch. We analysed regular CT scans of 19 normal (N) and 86 osteoarthritic (OA) scapulae. When the maximum version of OA shoulders was higher than 10°, the orientation was not only posterior, but extended in postero-superior (35%), postero-inferior (6%) and anterior sectors (4%). The medialisation of the glenoid was higher in OA than normal shoulders. The orientation angle of maximum version appeared as a critical parameter to specify the glenoid shape in 3D. It will be very useful in planning the best position for the glenoid in TSR.

FY 2006 Revolving Fund Purchase Order Report

Report written by Iowa DOT to Auditor Office about revolving fund purchase order.

Executive Order Number Forty-Nine, August 4, 2006

Executive order signed by Governor Thomas Vilsck

Executive Order Number Fifty-One, December 8, 2006

Executive order signed by Governor Thomas Vilsck

Executive Order Number Fifty, December 1, 2006

Executive order signed by Governor Thomas Vilsack

Executive Order Number One, January 27, 2007

Orders that the United States Flag be flown at half-staff to honor any member of Iowa National Guard, Iowa Air National Guard or an Iowa resident serving as a member of the United States Armed Forces who is killed in the line of duty.

Seismic attenuation in heterogeneous partially saturated rocks

We study wave-induced fluid flow effects in porous rocks partially saturated with gas and water, where the saturation patterns are governed by mesoscopic heterogeneities associated with the dry frame properties. The link between the dry frame properties and the gas saturation is defined by the assumption of capillary pressure equilibrium, which in the presence of heterogeneity implies that neighboring regions can exhibit different levels of saturation. In order to determine the equivalent attenuation and phase velocity of the synthetic rock samples considered in this study, we apply a numerical upscaling procedure, which permits to take into account mesoscopic heterogeneities associated with the dry frame properties as well as spatially continuous variations of the pore fluid properties. We consider numerical experiments to analyze such effects in heterogeneous partially saturated porous media, where the saturation field is determined by realistic variations in porosity. Our results indicate that the spatially continuous nature of gas saturation inherent to this study is a critical parameter controlling the seismic response of these environments, which in turn suggests that the physical mechanisms governing partial saturation should be accounted for when analyzing seismic data in a poro-elastic context.

Executive Order Number Two, February 28, 2007

Orders that the deadline for individual Iowa taxpayers who are farmers to pay their 2006 individual income tax is extended until March 15, 2007.

Executive Order Number Three, June 21, 2007

Orders that the use of E-85 fuel in the state's flexible-fuel vehicles shall be increased to at least 60% of fuel purchases, and instructs the Office of Energy Independence and DAS to develop a "State Government E-85 Use Plan .

Iowa Utilities Board Fiscal Year 2006 Regulatory Plan Pursuant to Executive Order Nine

Regulatory Plan for Fiscal Year 2005

Iowa Utilities Board Fiscal Year 2007 Regulatory Plan Pursuant to Executive Order Nine

Regulatory Plan for Fiscal Year 2007

Iowa Utilities Board Fiscal Year 2008 Regulatory Plan Pursuant to Executive Order Nine

Regulatory Plan for Fiscal Year 2008

Calibration of stochastic volatility models via second order approximation: the Heston model case

Using a suitable Hull and White type formula we develop a methodology to obtain asecond order approximation to the implied volatility for very short maturities. Using thisapproximation we accurately calibrate the full set of parameters of the Heston model. Oneof the reasons that makes our calibration for short maturities so accurate is that we alsotake into account the term-structure for large maturities. We may say that calibration isnot "memoryless", in the sense that the option's behavior far away from maturity doesinfluence calibration when the option gets close to expiration. Our results provide a wayto perform a quick calibration of a closed-form approximation to vanilla options that canthen be used to price exotic derivatives. The methodology is simple, accurate, fast, andit requires a minimal computational cost.