Distribution of Naegleria fowleri in Selected Northeast Arkansas Lakes

Seven northeast Arkansas recreational lakes were examined for the presence of pathogenic and nonpathogenic Naegleria fowleri. Cultural differentiation and microscopic morphology were used as species determining tests, while mouse pathogenicity tests were conducted to determine virulence. Only one isolate met all criteria utilized for definite identification of Naegleria fowleri, although Naegleria type organisms were found in all of the lakes. None of the isolates were pathogenic in mice

Trade and Wages: Insights from the Crystal Ball

This study uses both a net factor content analysis and a small simulation model to explore the impact on the U.S. labor market of a fivefold increase in imports of manufactured goods from developing countries. The simulation, which is parameterized by the US economy in 1990, involves a balanced trade expansion which displaces almost half of US manufacturing workers who are reemployed in the remaining manufacturing and non-trade sectors. The results show that relative wages of workers with a high school education or less would be depressed, while those with some college education would rise. However, despite the magnitude of the shock, the effects are surprisingly small. Once account is taken of productivity increases, labor force growth and export sector wage premiums, given unitary elasticities of demand and of substitution between workers with different levels of education, relative wages of workers with some college education rise by 3.5 percent, while the real wages of workers with a high school education or less decline by 1.3 percent. The impact of a variety of parameter assumptions is also explored.

An Approximation Scheme for Reflected Stochastic Differential Equations

In this paper we consider the Stratonovich reflected stochastic differential equation $dX_t=\sigma(X_t)\circ dW_t+b(X_t)dt+dL_t$ in a bounded domain \O which satisfies conditions, introduced by Lions and Sznitman, which are specified below. Letting $W^N_t$ be the $N$-dyadic piecewise linear interpolation of $W_t$ what we show is that one can solve the reflected ordinary differential equation $\dot X^N_t=\sigma(X^N_t)\dot W^N_t+b(X^N_t)+\dot L^N_t$ and that the distribution of the pair $(X^N_t,L^N_t)$ converges weakly to that of $(X_t,L_t)$. Hence, what we prove is a distributional version for reflected diffusions of the famous result of Wong and Zakai. Perhaps the most valuable contribution made by our procedure derives from the representation of $\dot X^N_t$ in terms of a projection of $\dot W_t^N$. In particular, we apply our result in hand to derive some geometric properties of coupled reflected Brownian motion in certain domains, especially those properties which have been used in recent work on the "hot spots" conjecture for special domain.Comment: 26 pages, 4 figure

The Effects of Monetary Policy Shocks: Some Evidence from the Flow of Funds

This paper uses the Flow of Funds accounts to assess the impact of a monetary policy shock on the borrowing and lending activities of different sectors of the economy. Our measures of contractionary monetary policy shocks have the following properties: (i) they are associated with a fall in nonborrowed reserves, total reserves, M1, the Federal Reserves' holdings of government securities and a rise in the federal funds rate, (ii) they lead to persistent declines in real GNP, employment, retail sales and nonfinancial corporate profits as well as increases in unemployment and manufacturing inventories, (iii) they generate sharp, persistent declines in commodity prices and (iv) the GDP price deflator does not respond to them for roughly a year. After that the GDP price deflator declines. Our major findings regarding the borrowing activities of different sectors can be summarized as follows. First, following a contractionary shock to monetary policy, net funds raised by the business sector increases for roughly a year. Thereafter, as the recession induced by the policy shock gains momentum, net funds raised by the business sector begins to fall. This pattern is not captured by existing monetary business cycle models. Second, we cannot reject the view that households do not adjust their financial assets and liabilities for several quarters after a monetary shock. This is consistent with a key assumption of several recent monetary business cycle models.

Nominal rigidities and the dynamic effects of a shock to monetary policy

The authors’ model, embodying moderate amounts of nominal rigidities, accounts for the observed inertia in inflation and persistence in output. The key features of their model are those that prevent a sharp rise in marginal costs after an expansionary shock to monetary policy. Of these features, the most important are staggered wage contracts of average duration (three quarters) and variable capital utilization.Inflation (Finance) ; Monetary policy ; Wages

Selected topics in non-Euclidean geometry

Call number: LD2668 .T4 1930 E8

Nominal rigidities and the dynamic effects of a shock to monetary policy

We present a model embodying moderate amounts of nominal rigidities which accounts for the observed inertia in inflation and persistence in output. The key features of our model are those that prevent a sharp rise in marginal costs after an expansionary shock to monetary policy. Of these features, the most important are staggered wage contracts of average duration three quarters, and variable capital utilization.Monetary policy

The aerobic bacterial flora of the vagina and its relationship to fertility in swine : a clinical study.

http://www.worldcat.org/oclc/1101326