University of Oklahoma

About: University of Oklahoma is a education organization based out in Norman, Oklahoma, United States. It is known for research contribution in the topics: Population & Radar. The organization has 25269 authors who have published 52609 publications receiving 1821706 citations. The organization is also known as: OU & Oklahoma University.

A Narrative Policy Framework: Clear Enough to Be Wrong?

Abstract: Narratives are increasingly subject to empirical study in a wide variety of disciplines. However, in public policy, narratives are thought of almost exclusively as a poststructural concept outside the realm of empirical study. In this paper, after reviewing the major literature on narratives, we argue that policy narratives can be studied using systematic empirical approaches and introduce a “Narrative Policy Framework” (NPF) for elaboration and empirical testing. The NPF defines narrative structure and narrative content. We then discuss narrative at the micro level of analysis and examine how narratives impact individual attitudes and hence aggregate public opinion. Similarly, we examine strategies for the studying of group and elite behavior using the NPF. We conclude with seven hypotheses for researchers interested in elaborating the framework.

A framework for assessing the systemic risk of major financial institutions

Abstract: In this paper we propose a framework for measuring and stress testing the systemic risk of a group of major financial institutions. The systemic risk is measured by the price of insurance against financial distress, which is based on ex ante measures of default probabilities of individual banks and forecasted asset return correlations. Importantly, using realized correlations estimated from high-frequency equity return data can significantly improve the accuracy of forecasted correlations. Our stress testing methodology, using an integrated micro–macro model, takes into account dynamic linkages between the health of major US banks and macro-financial conditions. Our results suggest that the theoretical insurance premium that would be charged to protect against losses that equal or exceed 15% of total liabilities of 12 major US financial firms stood at $110 billion in March 2008 and had a projected upper bound of $250 billion in July 2008.

Consumer Confidence and Asset Prices: Some Empirical Evidence

Abstract: We explore the time-series relationship between investor sentiment and the small-stock premium using consumer confidence as a measure of investor optimism. We estimate the components of consumer confidence related to economic fundamentals and investor sentiment. After controlling for the time variation of beta, we study the time-series variation of the pricing error with sentiment. Over the last 25 years, investor sentiment measured using consumer confidence forecasts the returns of small stocks and stocks with low institutional ownership in a manner consistent with the predictions of models based on noise-trader sentiment. Sentiment does not appear to forecast time-series variation in the value and momentum premiums. (JEL G10, G12, G14) In this article, we explore the time-series relationship between investor sentiment and stock returns using consumer confidence as a measure of investor optimism. Our goal is to assess the extent to which sentiment affects the prices of different stocks in times of optimistic or pessimistic assessment of market conditions by investors. Our analysis examines both behavioral and rational channels through which sentiment might be manifested in asset prices. The behavioral hypopthesis suggests that when arbitrage is limited,

Irrigated Radiofrequency Catheter Ablation Guided by Electroanatomic Mapping for Recurrent Ventricular Tachycardia After Myocardial Infarction The Multicenter Thermocool Ventricular Tachycardia Ablation Trial

Abstract: Background— Recurrent ventricular tachycardia (VT) is an important cause of mortality and morbidity late after myocardial infarction. With frequent use of implantable cardioverter-defibrillators, these VTs are often poorly defined and not tolerated for mapping, factors previously viewed as relative contraindications to ablation. This observational multicenter study assessed the outcome of VT ablation with a saline-irrigated catheter combined with an electroanatomic mapping system. Methods and Results— Two hundred thirty-one patients (median LV ejection fraction, 0.25; heart failure in 62%) with recurrent episodes of monomorphic VT (median, 11 in the preceding 6 months) caused by prior myocardial infarction were enrolled. All inducible monomorphic VTs with a rate approximating or slower than any spontaneous VTs were targeted for ablation guided by electroanatomic mapping during sinus rhythm and/or VT. Patients were not excluded for multiple VTs (median, 3 per patient) or unmappable VT (present in 69% of pa...

Effective Correlation of Apparent Gas Permeability in Tight Porous Media

Abstract: Gaseous flow regimes through tight porous media are described by rigorous application of a unified Hagen–Poiseuille-type equation. Proper implementation is accomplished based on the realization of the preferential flow paths in porous media as a bundle of tortuous capillary tubes. Improved formulations and methodology presented here are shown to provide accurate and meaningful correlations of data considering the effect of the characteristic parameters of porous media including intrinsic permeability, porosity, and tortuosity on the apparent gas permeability, rarefaction coefficient, and Klinkenberg gas slippage factor.