Role of MRI in term newborn hypoxic-ischemic encephalopathy: correlation with motor outcome

Abstract Objectives: To correlate the site and severity of brain lesions seen on magnetic resonance imaging (MRI) with the general movements, Hammersmith scoring and motor outcome in term new-borns with ipoxic-ischemic encephalopathy. Materials and methods: in the period between April 2009 and February of 2012 we studied whit MR imaging twenty-three term neonates (14M e 9F) with diagnosis of encephalopathy according to the criteria of Sarnat and Sarnat. Brain MR scan has been performed within the first 3 postnatal weeks and scored in 5 patterns of injury based on a modified classification system of Okereafor et al. General movements as at both 1 and 3 postnatal months, Hammersmith scoring as at 1week, 1 and 3 postnatal months have been evaluated. Motor outcome was assessed as at 6 both and 12 months. Conclusion: in term infants with HIE, the site and severity of brain lesions seen on early MRI are correlated with general movements, Hammersmith scoring and motor outcome

Government Intervention and Arbitrage

We model and document the novel notion that direct government intervention in a market may induce violations of the law of one price (LOP) in other, arbitrage-related markets. We show that the introduction of a government pursuing a non-public, partially informative price target in a model of strategic trading and segmented dealership generates equilibrium price differentials among fundamentally identical (or linearly related) assets -- especially when markets are illiquid, LOP violations are small, speculators are heterogeneously informed, or policy uncertainty is high. We find supportive evidence in a sample of ADRs traded in U.S. exchanges and currency interventions by developed and emerging countries between 1980 and 2009.https://deepblue.lib.umich.edu/bitstream/2027.42/107444/13/1240_Pasquariello_May2017.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/107444/10/Pasquariello-March2017.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/107444/8/1240_Pasquariello_May2016.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/107444/6/1240_ Pasquariello_June2015_2.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/107444/4/1240_ Pasquariello_June2015.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/107444/1/1240_Pasquariello.pdfDescription of 1240_Pasquariello_May2017.pdf : May 2017 revisionDescription of 1240_Pasquariello_May2016.pdf : SUPERSEDED: May 2016 RevisionDescription of 1240_ Pasquariello_June2015_2.pdf : SUPERSEDED: June 2015 Revision (newer)Description of 1240_ Pasquariello_June2015.pdf : SUPERSEDED: June 2015 RevisionDescription of 1240_Pasquariello.pdf : SUPERSEDED: Original versionDescription of 1240_Pasquariello_May2017.pdf : May 2017 revision

Information management in an integrated space telerobot

The in-orbit operations, like space structures inspection, servicing and repairing, is expected to be one of the most significant technological area for application and development of Robotics and Automation in Space Station environment. The Italian National Space Plan (PSN) has started up its strategic programme SPIDER (Space Inspection Device for Extravehicular Repairs), which is scheduled in three phases, with the final goal of performing docking and precision repairing in the Space Station environment. SPIDER system is an autonomous integrated space robot, using mature Artificial Intelligence tools and technics for its operational control. The preliminary results of a study on the information architecture of the spacecraft are described

Giant petrous bone cholesteatoma: combined microscopic surgery and an adjuvant endoscopic approach

Petrous bone cholesteatomas (PBCs) are epidermoid cysts, which have developed in the petrous portion of the temporal bone and may be congenital or acquired. Cholesteatomas arising in this region have a tendency to invade bone and functional structures and the middle and posterior fossae reaching an extensive size. Traditionally, surgery of a giant PBC contemplates lateral transtemporal or middle fossa microscopic surgery; however, in recent years, endoscopic surgical techniques (primary or complementary endoscopic approach) are starting to receive a greater consensus for middle ear and mastoid surgeries. We report the rare case of an 83-year-old Caucasian male affected by a giant cholesteatoma that eroded the labyrinth and the posterior fossa dura and extended to the infralabyrinthine region, going beyond the theca and reaching the first cervical vertebra. The giant cholesteatoma was managed through a combined approach (microscopic and, subsequently, complementary endoscopic approach). In this case report, we illustrate some advantages of this surgical choice

Central Bank Intervention and the Intraday Process of Price Formation in the Currency Markets

We study the impact of Central Bank intervention on the microstructure of currency markets. We analyze the two major channels of effectiveness of currency management policies, imperfect substitutability and signaling, in a model of sequential trading in which the stylized monetary authority is a rational but not necessarily profit-maximizing player. In the context of our model and consistently with the available empirical literature, intervention has long-lived effects on quotes when informative about policy objectives and economic fundamentals, or when the threat of future government action is significant and credible. A monetary authority attempting to lean against the wind or to chase the trend of the domestic currency is more successful when dealers compete against each other for the incoming trades. The resulting process of intraday price formation and bid-ask spreads are shown to depend crucially on the degree of market power held by the forex dealers, on the sign and magnitude of the announced and realized intervention, on the perceived likelihood of a future intervention to occur, on the transparency of the order flow induced by the intervention, on the direction and heterogeneity of agents' beliefs and expectations, and on the elasticity of risk-averse investors' demand for foreign currency-denominated assets

Informative Trading or Just Noise? An Analysis of Currency Returns, Market Liquidity, and Transaction Costs in Proximity of Central Bank Interventions

We study the impact of Central Bank intervention on the process of price formation in currency markets. We use a unique dataset of tick-by-tick indicative quotes posted by dealers on Reuters terminals and of intraday sterilized spot interventions and customer transactions executed on behalf of the Swiss National Bank (SNB) on the Swiss Franc/U.S. Dollar exchange rate (CHFUSD) between 1986 and 1998. We find that potentially informative SNB interventions (but not ex post uninformative customer transactions), although small relative to daily trading volumes in the CHFUSD market, had significant and persistent (albeit asymmetric, depending on their sign) effects on daily currency returns, especially when (relatively) large in magnitude, expected by the market, or inconsistent with existing momentum. The market did not anticipate the occurrence of incoming interventions un-less if chasing the trend. The SNB was much less successful in smoothing fluctuations of the currency, for daily CHFUSD volatility always surged in proximity of interventions, as did average absolute and proportional spreads. Decomposition of estimated absolute spread shocks also reveals that SNB actions induced misinformation among market participants, impacted trading immediacy, and increased market liquidity and competition among dealers. Many of these changes translated into higher transaction costs borne by the population of investors

Central Bank Intervention and the Intraday Process of Price Formation in the Currency Markets

We study the impact of Central Bank intervention on the microstructure of currency markets. We analyze the two major channels of effectiveness of currency management policies, imperfect substitutability and signaling, in a model of sequential trading in which the stylized monetary authority is a rational but not necessarily profit-maximizing player. In the context of our model and consistently with the available empirical literature, intervention has long-lived effects on quotes when informative about policy objectives and economic fundamentals, or when the threat of future government action is significant and credible. A monetary authority attempting to lean against the wind or to chase the trend of the domestic currency is more successful when dealers compete against each other for the incoming trades. The resulting process of intraday price formation and bid-ask spreads are shown to depend crucially on the degree of market power held by the forex dealers, on the sign and magnitude of the announced and realized intervention, on the perceived likelihood of a future intervention to occur, on the transparency of the order flow induced by the intervention, on the direction and heterogeneity of agents' beliefs and expectations, and on the elasticity of risk-averse investors' demand for foreign currency-denominated assets

2D-3D registration of CT vertebra volume to fluoroscopy projection: A calibration model assessment (doi:10.1155/2010/806094)

This study extends a previous research concerning intervertebral motion registration by means of 2D dynamic fluoroscopy to obtain a more comprehensive 3D description of vertebral kinematics. The problem of estimating the 3D rigid pose of a CT volume of a vertebra from its 2D X-ray fluoroscopy projection is addressed. 2D-3D registration is obtained maximising a measure of similarity between Digitally Reconstructed Radiographs (obtained from the CT volume) and real fluoroscopic projection. X-ray energy correction was performed. To assess the method a calibration model was realised a sheep dry vertebra was rigidly fixed to a frame of reference including metallic markers. Accurate measurement of 3D orientation was obtained via single-camera calibration of the markers and held as true 3D vertebra position; then, vertebra 3D pose was estimated and results compared. Error analysis revealed accuracy of the order of 0.1 degree for the rotation angles of about 1?mm for displacements parallel to the fluoroscopic plane, and of order of 10?mm for the orthogonal displacement.<br/

The Evolution of the Loa in Spanish America.

The Evolution of the Loa in Spanish America

The Evolution of the sainete in the River Plate Area

The Evolution of the sainete in the River Plate Are