The ichthyoplankton assemblage structure in the Yangtze Estuary was analyzed based on four springs in 1999, 2001, 2004 and 2007 in order to provide detailed characterizations of the ichthyoplankton assemblage in springs, examine the long-term dynamics of spring ichthyoplankton assemblages, and evaluate the influence of environmental factors on the spatial distribution and inter-annual variation...

Anopheles lindesayi japonicus Yamada is an uncommonly collected mosquito in Korea, and its presence is based upon limited collection data and anecdotal reports in Korean mosquito literature: 45 specimens collected from 15 identified sites. This study reports the collection of 538 specimens from 16 sites as part of the authors' 2004-2007 anopheline surveillance. Larvae were collected from stream...

Various models have been used to describe distance running technique. Among these, the mass-spring model is fairly simple to use and apply, but when employed as a model, does not predict vertical force accurately especially when a heel strike is exhibited. The purpose of this article is to demonstrate how the mass-spring model can be modified to provide a simple, yet accurate prediction of grou...

1 Executive Director, Georgia Warm Springs Foundation, Warm Springs, Ga. 31830; member, Committee on Prosthetics Research and Development, National Academy of Sciences—National Research Council, Washington, D. C. ingenious device" (Fig. 1). This apparatus was later called a "foot-operated feeder" because it required voluntary extension of her foot against a movable footboard on her wheelchair t...

A description of the larva of Drusus plicatus Radovanović is given for the first time. The most important diagnostic characters enabling separation from larvae of the other Drusinae from the southeast Europe are listed. Molecular, ecological, and ethological features and distribution patterns of the species are given. Additionally, information on the sympatric caddisfly species of the three spr...

Desert Ecology Research Group, School of Biological Sciences, University of Sydney, Sydney, NSW 2006, Australia, Trophic Cascades Program, Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR 97331, USA, School of Environmental and Forest Sciences, University of Washington, Seattle, WA 98195, USA, CSIRO Land and Water Flagship, PO Box 2111, Alice Springs, NT 0871,...

We construct small-world spring networks based on a one-dimensional chain and study its static and quasistatic behavior with respect to external forces. Regular bonds and shortcuts are assigned linear springs of constant k and k', respectively. In our models, shortcuts can only stand extensions less than deltac beyond which they are removed from the network. First we consider the simple cases o...

In this paper we present a purely mechanical analog of the conventional chemo-mechanical modeling of muscle contraction. We abandon the description of kinetics of the power stroke in terms of jump processes and instead resolve the continuous stochastic evolution on an appropriate energy landscape. In general physical terms, we replace hard spin chemical variables by soft spin variables represen...

This paper describes a design case-study undertaken as part of the language design validation for the Rosetta System Level Description Language. The system under consideration is a dualspring mechanical system. A physical model is constructed, describing the static characteristics of springs and the requirements and constraints applying to the system. It is demonstrated that the declarative mod...