نتایج جستجو برای: subject headings

تعداد نتایج: 250626  

1997
Daniel J. Eisenstein

The bulk of recent cosmological research has focused on the adiabatic cold dark matter model and its simple extensions. Here we present an accurate tting formula that describes the matter transfer functions of all common variants, including mixed dark matter models. The result is a function of wavenumber, time, and six cosmological parameters: the massive neutrino density, number of neutrino sp...

2001
B. Kouvaritakis J. A. Rossiter

This index covers all technical items papers, correspondence, reviews, etc. that appeared in this periodical during 2001, and items from previous years that were commented upon or corrected in 2001. Departments and other items may be also covered if they have been judged to have archival value. The Author Index contains the primary entry for each item, listed under the first author’s name. The ...

2008
D. Bauer L. Talon A. Ehrlacher

Flow in discrete networks can be observed in biological, geological, or technical systems. Often, the number of individual segments is very large. Therefore, discrete pressure and flow calculation in each single segment becomes very time consuming, and a continuum model becomes attractive. We apply a global upscaling method based on a spatial average to investigate a porous media network model ...

2008
Zhenghong Tang Michael K. Lindell Carla S. Prater Samuel D. Brody

The U.S. Pacific coastal states are at risk from both locally and distantly generated tsunamis. This vulnerability can be reduced by effective hazard management plans, but no studies have been conducted to determine how local jurisdictions have incorporated tsunami hazard management into their planning frameworks. This paper analyzes the quality of hazard management plans from 43 coastal counti...

2007
Edmond P. Saliklis David P. Billington

This paper presents new aspects of Anton Tedesko’s design for an important thin shell concrete roof. The study of this roof results from the examination of original engineering drawings and calculations which we present with the goal of promoting a greater understanding of the structural design of a major figure in the tradition of 20th century building. CE Database subject headings: Thin shell...

2003
Brian C. Thomas Adrian L. Melott Sergei F. Shandarin

We have used N-body simulations to develop two independent methods to quantify redshift distortions known as the Bull’s Eye effect (large scale infall plus small scale virial motion). This effect depends upon the mass density, Ω0, so measuring it can in principle give an estimate of this important cosmological parameter. We are able to measure the effect and distinguish between its strength for...

2017
Wendy Nilsen Anni Skipstein Kristian A. Østby Arnstein Mykletun

Background Women consistently have higher sickness absence than men. The double-burden hypothesis suggests this is due to higher work-family burden in women than men. The current study aimed to systematically review prospective studies of work-family conflict and subsequent sickness absence. A systematic search was conducted in the electronic databases Medline, PsycINFO, and Embase with subject...

2009
Bon-Gang Hwang Stephen R. Thomas Carl T. Haas Carlos H. Caldas

Rework continues to affect both cost and schedule performance throughout the construction industry. The direct costs alone often tally to 5% of the total construction costs. Using the data obtained from 359 construction projects in the Construction Industry Institute database, this paper assesses the impacts of rework on construction cost performance for projects in various categories. In addit...

2008
N. Panagia S. M. Fall B. Mobasher M. Dickinson H. C. Ferguson M. Giavalisco D. Stern T. Wiklind

We examine the possible reionization of the intergalactic medium (IGM) by the source UDF033238.7274839.8 (hereafter HUDF-JD2), which was discovered in deep HST/VLT/Spitzer images obtained as part of the Great Observatory Origins Deep Survey and Hubble Ultra-Deep Field projects. Mobasher et al. (2005) have identified HUDF-JD2 as a massive (∼ 6 × 10M⊙) post-starburst galaxy at redshift z& 6.5. We...

Journal: :JPMA. The Journal of the Pakistan Medical Association 2016
Khabir Ahmad Anthony B Zwi Daniel J M Tarantola Bal Chand

A systematic review was conducted in December 2013 to examine the extent to which health research has been focused on the eye health issues of fishing communities. We searched multiple databases to identify relevant citations, using a combination of Medical Subject Headings (MeSH) and text words representing eye health, fishing populations and measures of disease frequency. The search yielded o...

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