Trace and Body Fossils from the Cuyahoga Formation (Mississippian), Reynoldsburg, Ohio

Seven trace fossil genera and four body fossil genera have been found in the sandstone facies (Buena Vista Member) of the Cuyahoga Formation (Lower Mississippian) at Pine Quarry Park in Reynoldsburg, Ohio. Ichnogenera identified are Scalarituba, Gordia, Zoophycos, Helminthoidia, Phycosiphon, Planolites, and Laevicyclus. Zoophycos and Laevicyclus are found in the lower beds; Gordia and Helminthoidia are more common in the upper beds. Scalarituba and Planolites are found throughout the beds. Together, the trace fossils of the upper part of the quarry are indicative of the Cruziana ichnofacies. Lower in the section the facies seems to be of the Skolithos ichnofacies. Associated body fossils found are Platycrinities sp., Gilbertsocrinus? sp., Dictyoclostus sp., Fenestrellina sp., and unidentifiable blastoid fragments. At the Reynoldsburg locality, deposition is interpreted to have taken place in a shallow water setting near an ancient deltaic environment

Trace and Body Fossils from the Cuyahoga Fonnation (Mississippian), Reynoldsburg, Ohio

Seven trace fossil genera and four body fossil genera have been found in the sandstone facies (Buena Vista Member) of the Cuyahoga Formation (Lower Mississippian) at Pine Quarry Park in Reynoldsburg, Ohio. Ichnogenera identified are Scalarituba, Gordia, Zoophycos, Helminthoidia, Phycosiphon, Planolites, and Laevicyclus. Zoophycos and Laevicyclus are found in the lower beds; Gordia and Helminthoidia are more cornmon in the upper beds. Scalarituba and Planolites are found throughout the beds. Together, the trace fossils of the upper part of the quarry are indicative of the Cruziana ichnofacies. Lower in the section the facies seems to be of the Skolithos ichnofacies. Associated body fossils found are Platycrinities sp., Gilbertsocrinus? sp., Dictyoclostus sp., Fenestrellina sp., and unidentifiable blastoid fragments. At the Reynoldsburg locality, deposition is interpreted to have taken place in a shallow water setting near an ancient deltaic environment

A Model of Mortgage Credit

The emergence and proliferation of the international financial crisis since mid-2007 has, amongst other issues, refocussed attention on the interrelationship between mortgage credit availability and house prices. A growing body of opinion is now of the view that the increase in credit availability internationally was a primary contributor to the rate of house price increases witnessed in many OECD countries over the past 10 years. House price growth in the UK over this period was to the fore of that experienced across countries, while the Anglo- Saxon system of banking was characterised by a significant degree of financial innovation yielding greater credit provision. In this paper we propose a simple intuitive model, which seeks to quantify the impact of credit market disequilibrium on UK house prices over the period 1992 - 2008.

Quantifying Revenue Windfalls from the Irish Housing Market

The speed and severity of the decline in the Irish fiscal position in recent years raises a number of important issues regarding the assessment of fiscal policy within the EU. From a position of relative strength, with large surpluses and low debt to GDP ratio, the Irish public finances have rapidly deteriorated, culminating in an Excessive Deficit Procedure being launched in early 2009. In hindsight, it is evident that tax revenues were on an unsustainable path in recent years due, in large part, to structural imbalances within the economy, mainly associated with the housing market. The excess growth in the latter culminated in large and transitory tax revenue windfalls, which ultimately proved unsustainable. These windfalls contributed to large general government and cyclically adjusted budget surpluses. This paper seeks to quantify the windfall gains associated with property taxes through modelling housing related tax receipts over the period 2002 to 2009. From this, estimates are derived as to the underlying or property adjusted fiscal position, which is found in various years, to have diverged greatly from actual outturns.

Estimating the Structural Demand for Irish Housing

After 10 years of unprecedented increases in both prices and activity levels, the Irish housing market appears to be entering a period of some uncertainty. In the early part of 2007, Irish house prices, for the first time in recent history, experienced negative growth rates - leading indicators within the housing sector would suggest that house building is already beginning to contract, with future levels expected to be somewhat below the record level of construction in 2006. The sustained increase in housing construction prompted by the rapid increase in prices has resulted in the Irish construction sector assuming a position of considerable importance within the overall economy. Arguably, any significant slowdown in housing activity could have far-reaching domestic consequences. In this paper, we use a recently developed model of the housing sector to gauge what the structural level of demand is for Irish housing.

Modelling Credit in the Irish Mortgage Market

The sharp decline in the performance of international property markets has been central to the financial distress experienced globally. The Irish housing market experienced particularly strong rates of price increases and heightened activity levels by OECD standards. One reason cited for such large price increases has been the significant degree of financial liberalisation experienced by Irish credit institutions. The culmination ofmuch of this liberalisation resulted in large increases in the availability of mortgage credit. In this paper we apply a recently developed model of mortgage credit and examine the implications for Irish house prices of changes in lending patterns. Our results suggest that post 2003, a significant amount of the increase in Irish prices was determined by innovative developments in international finance, which enabled Irish institutions, in particular, to secure alternative sources of lending funds.

Aid to conflict-affected countries : lessons for donors

The first section looks at the implications of conflict for aid effectiveness and selectivity. We argue that, while aid is generally effective in promoting growth and by implication reducing poverty, it is more effective in promoting growth in post-conflict countries. We then consider the implications of these findings for donor selectivity models and for assessment of donor performance in allocating development aid among recipient countries. We argue that, while further research on aid effectiveness in post-conflict scenarios is needed, existing selectivity models should be augmented with, inter alia, post-conflict variables, and donors should be evaluated on the basis, inter alia, of the share of their aid budgets allocated to countries experiencing post-conflict episodes. We also argue for aid delivered in the form of projects to countries with weak institutions in early post-conflict years. The second section focuses on policies for donors operating in conflict-affected countries. We set out five of the most important principles: (1) focus on broad-based recovery from war; (2) to achieve a broad-based recovery, get involved before the conflict ends; (3) focus on poverty, but avoid &lsquo;wish lists&rsquo;; (4) help to reduce insecurity so aid can contribute more effectively to growth and poverty reduction; and (5) in economic reform, focus on improving public expenditure management and revenue mobilisation. The third section concludes by emphasising the fact that there is no hard or fast dividing line between &lsquo;war&rsquo; and &lsquo;peace&rsquo; and that it may take many years for a society to become truly &lsquo;post&rsquo;-conflict&rsquo;. Donors, therefore, need to prepare for the long haul.<br /

The Surgical Infection Society revised guidelines on the management of intra-abdominal infection

Background: Previous evidence-based guidelines on the management of intra-abdominal infection (IAI) were published by the Surgical Infection Society (SIS) in 1992, 2002, and 2010. At the time the most recent guideline was released, the plan was to update the guideline every five years to ensure the timeliness and appropriateness of the recommendations. Methods: Based on the previous guidelines, the task force outlined a number of topics related to the treatment of patients with IAI and then developed key questions on these various topics. All questions were approached using general and specific literature searches, focusing on articles and other information published since 2008. These publications and additional materials published before 2008 were reviewed by the task force as a whole or by individual subgroups as to relevance to individual questions. Recommendations were developed by a process of iterative consensus, with all task force members voting to accept or reject each recommendation. Grading was based on the GRADE (Grades of Recommendation Assessment, Development, and Evaluation) system; the quality of the evidence was graded as high, moderate, or weak, and the strength of the recommendation was graded as strong or weak. Review of the document was performed by members of the SIS who were not on the task force. After responses were made to all critiques, the document was approved as an official guideline of the SIS by the Executive Council. Results: This guideline summarizes the current recommendations developed by the task force on the treatment of patients who have IAI. Evidence-based recommendations have been made regarding risk assessment in individual patients; source control; the timing, selection, and duration of antimicrobial therapy; and suggested approaches to patients who fail initial therapy. Additional recommendations related to the treatment of pediatric patients with IAI have been included. Summary: The current recommendations of the SIS regarding the treatment of patients with IAI are provided in this guideline

Microstructure identification via detrended fluctuation analysis of ultrasound signals

We describe an algorithm for simulating ultrasound propagation in random one-dimensional media, mimicking different microstructures by choosing physical properties such as domain sizes and mass densities from probability distributions. By combining a detrended fluctuation analysis (DFA) of the simulated ultrasound signals with tools from the pattern-recognition literature, we build a Gaussian classifier which is able to associate each ultrasound signal with its corresponding microstructure with a very high success rate. Furthermore, we also show that DFA data can be used to train a multilayer perceptron which estimates numerical values of physical properties associated with distinct microstructures.Comment: Submitted to Phys. Rev.

Microscopic Surface Structure of Liquid Alkali Metals

We report an x-ray scattering study of the microscopic structure of the surface of a liquid alkali metal. The bulk liquid structure factor of the eutectic K67Na33 alloy is characteristic of an ideal mixture, and so shares the properties of an elemental liquid alkali metal. Analysis of off-specular diffuse scattering and specular x-ray reflectivity shows that the surface roughness of the K-Na alloy follows simple capillary wave behavior with a surface structure factor indicative of surface induced layering. Comparison of thelow-angle tail of the K67Na33 surface structure factor with the one measured for liquid Ga and In previously suggests that layering is less pronounced in alkali metals. Controlled exposure of the liquid to H2 and O2 gas does not affect the surface structure, indicating that oxide and hydride are not stable at the liquid surface under these experimental conditions.Comment: 12 pages, 3 figures, published in Phys. Rev.