We use lookback time versus redshift data from galaxy clusters (Capozziello et al. 2004) and passively evolving galaxies (Simon et al. 2005), in combination with the WMAP determination of the age of the Universe, to constrain dark energy cosmological model parameters. Current lookback time data provide interesting and moderately restrictive constraints on cosmological parameters. When used join...

The effective use of pervious concrete in environmental site design requires consistent design procedures integrating the structural and material properties of the pervious concrete pavement with hydrologic performance of the pervious concrete system. Design procedures to size pervious concrete storm-water systems are presented based on criteria for freeze-thaw protection and drawdown reliabili...

The origin of seed perturbations in the Universe is studied within the framework of a specific minisuperspace model. It is shown that the ‘creation’ of the Universe as a result of a quantum transition from a flat empty spacetime would lead to a flat FLRW (Friedmann Lemâıtre RobertsonWalker) Universe with weak inhomogeneous perturbations at large wavelengths. The power spectrum of these perturba...

In this paper we develop a general minimum principle of analytical dynamics that is applicable to nonideal constraints. The new principle encompasses Gauss’s Principle of Least Constraint. We use this principle to obtain the general, explicit, equations of motion for holonomically and/or nonholonomically constrained systems with non-ideal constraints. Examples of a nonholonomically constrained ...

The most common approach to assess the safety of a bridge is load rating. However, this approach cannot quantify the bridge safety in probabilistic terms or fully quantify the structural risk to the bridge. Reliability methods have become an increasingly popular and gradually accepted approach to assess the safety of structures. These methods account for the randomness and correlation of all re...

S. TAHERZADEH,1 S. SHARMA,1 V. CHHAJLANI,2 I. GANTZ,3 N. RAJORA,1 M. T. DEMITRI,4 L. KELLY,1 H. ZHAO,1 T. ICHIYAMA,1 A. CATANIA,4 AND J. M. LIPTON1,5 Departments of 1Physiology and 5Anesthesiology and Pain Management, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75235-9040; 2Astra Hassle, 431 83 Molndal, Sweden; 3Department of Surgery, University of Michigan Medical ...

I present galaxy models resulting from violent relaxation in the presence of a pre-existing black hole. The models are computed by maximizing the entropy of the stellar dynamical system. I show that their properties are very similar to those of adiabatic growth models for a suitable choice of parameters. This suggests that observations of nuclear light profiles and kinematics alone may not be s...

These keywords are based on the subject headings from the British Nursing Index. This article has been subject to double-blind review. For related articles visit our online archive and search using the keywords This article explores the problem of wound-related pain. It provides an overview of the different types of pain associated with wounds, discusses approaches to pain assessment and consid...

Partridge et al. provided an excellent and timely review on patient compliance issues of prescribed oral therapy (1). This important area merits the attention of every oncology clinician, in view of the increasing number of new oral antineoplastic agents. The review would have been more complete, however, if it had pointed out that pharmacist involvement in patient education is essential in ach...