We discuss the selection and observations of a large sample of nearby galaxies, which we are using to quantify the star formation activity in the local Universe. The sample consists of 334 galaxies across all Hubble types from S0/a to Im and with recession velocities of between 0 and 3000 km s−1. The basic data for each galaxy are narrow band Hα+[N] and R-band imaging, from which we derive st...

Even before the controversy over MPs’ expenses broke, earlier this year five Anglican bishops attacked the last 10 years of government for being lacking moral direction and increasing the gap between rich and poor. So what, you might say – their market share is hardly increasing is it? And in its highly regarded forecast of The World in 2009, The Economist predicted that as the global recession...

We use standard general relativity to illustrate and clarify several common misconceptions about the expansion of the universe. To show the abundance of these misconceptions we cite numerous misleading, or easily misinterpreted, statements in the literature. In the context of the new standard ΛCDM cosmology we point out confusions regarding the particle horizon, the event horizon, the “observab...

We consider a multi--sector overlapping generations model with imperfectly competitive firms in the output markets and wage setting trade unions in the labour markets. A coordination problem between firms creates multiple temporary equilibria which are either Walrasian or of the Keynesian unemployment type. There exist many deterministic and stochastic equilibrium cycles fluctuating between Key...

We prove that ifm ≥ n−3 then every Sm-invariant F-nef divisor on the moduli space of stable n-pointed curves of genus zero is linearly equivalent to an effective combination of boundary divisors. As an application, we determine the Mori cone of the moduli spaces of stable curves of small genus with few marked points.

Let $X$ be a  Banach  space, $Csubset X$  be  a  closed  convex  set  included  in  a well-based cone $K$, and also let $sigma_C$ be the support function which is defined on $C$. In this note, we first study the existence of a  bounded base for the cone $K$, then using the obtained results, we find some geometric conditions for the set  $C$,  so that ${mathop{rm int}}(mathrm{dom} sigma_C) neqem...

Robinson introduced a quotient space of pairs unbounded convex sets which share their recession cone. In this paper minimal sets, i.e., representations elements Robinson's spaces, are investigated. The fact that pair having property translation is reduced proved. the case two-dimensional formula for finding an equivalent given, criterion minimality presented, reducibility all proved, and nontri...

In this paper we generalize Robinson's version of an order cancellation law in which some unbounded subsets a vector space are cancellative elements. We introduce the notion weakly narrow sets normed spaces, study their properties and prove where canceled set is narrow. Also, for closed convex topological has bounded Hausdorff-like distance from its recession cone. topologically embed semigroup...

Hydrograph recession constants are required in rainfall-runoff models, base flow augmentation studies, geohydrologic investigations and in regional low-flow studies. The recession portion of a streamflow hydrograph is shown to be either an autoregressive process or an integrated moving average process, depending upon the structure of the assumed model errors. Six different estimators of the bas...

In the summer of 2009, the U.S. economy began to emerge from its deepest recession since the 1930s. But today, more than two years later, conditions still aren’t much different from an economy actually in recession. Gross domestic product (GDP) growth was barely positive in the first half of 2011. The unemployment rate is 9.1 percent, much higher than anything we had experienced for decades bef...