نتایج جستجو برای: manmade source

تعداد نتایج: 419529  

2009
Chris Rizos Bruce Harvey

24/7 deformation monitoring of manmade structures is a challenging research issue due to high labour cost or dependency on favourable geometry (in the case of GPS/GNSS). Locata, working on similar principles to carrier phase-based GPS, is a possible technology for use in deformation monitoring applications by providing millimetre level precision and centimetre level accuracy. This paper reviews...

Journal: :The Journal of the Acoustical Society of America 2006
Edwin R Lewis Peter M Narins Jennifer U M Jarvis Gary Bronner Matthew J Mason

Insect prey of the Namib golden mole congregate beneath clumps of grass scattered among the sand dunes of the Namib Desert. In the presence of the light winds that typically blow over the Namib Desert, these grass clumps emit low-amplitude vibrations that are transmitted through the sand. While foraging in the sand-swimming mode (a few centimeters below the surface of the sand), some moles appa...

2015
Mark J. Spalding

Is the loss of our Underwater Cultural Heritage accelerating? The term “underwater cultural heritage” (UCH) refers to all remnants of human activities lying on the seabed, on riverbeds, or at the bottom of lakes. It includes shipwrecks and artifacts lost at sea and extends to prehistoric sites, sunken towns, and ancient ports that were once on dry land but now are submerged due to manmade, clim...

Journal: :EURASIP J. Adv. Sig. Proc. 2004
S. Arivazhagan L. Ganesan

Automatic target recognition (ATR) involves processing images for detecting, classifying, and tracking targets embedded in a background scene. This paper presents an algorithm for detecting a specified set of target objects embedded in visual images for an ATR application. The developed algorithm employs a novel technique for automatically detecting man-made and non-manmade single, two, and mul...

2004
Serge J. Belongie Josh Wills

We show how to exploit temporal periodicity of moving objects to perform 3D reconstruction. The collection of period-separated frames serve as a surrogate for multiple rigid views of a particular pose of the moving target, thus allowing the use of standard techniques of multiview geometry. We motivate our approach using human motion capture data, for which the true 3D positions of the markers a...

Journal: :Remote Sensing 2018
Ilaria Catapano Giovanni Ludeno Francesco Soldovieri Francesco Tosti Giuseppina Padeletti

Ground Penetrating Radar (GPR) is a flexible and cost-effective tool for performing structural integrity assessment and quick damage evaluation of manmade structures, including cultural heritage (CH) assets. In this context, this paper deals with the usefulness of GPR surveys enhanced by the use of a Microwave Tomographic data processing approach as a methodology for the diagnosis and monitorin...

2011
Gary T. Howard

Polyurethane (PU) is a general term used for a class of polymers derived from the condensation of polyisocyanate and polyol. Polyurethanes are an important and versatile class of manmade polymers used in a wide variety of products in the medical, automotive and industrial fields. Depending on the chemical structures of the polyisocyanates and polyols, PU can adopt various forms ranging from fle...

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