Results 51 to 60 of about 4,445 (182)

Model‐Based Systems Engineering in Space Applications: A Comprehensive Literature Review

Systems Engineering, EarlyView.
ABSTRACT The growing complexity of space engineering is driving the demand to embrace the adoption of Model‐Based Systems Engineering (MBSE). Although the MBSE is well‐practiced in the space industry, the level of effort and need required to obtain the benefits of MBSE vastly differ across enterprises; this disparity presents a significant challenge to
Rehobot Bekele Buruso, Sara Himmiche, Taiwo Tejumola, Yeshirun Alemayehu, Bertrand Rose   +4 more
wiley   +1 more source

Analyzing the effect of corona losses on dynamic line rating models for overhead transmission lines

International Journal of Electrical Power & Energy Systems
High-voltage transmission lines tend to generate corona activity. The value of corona losses is highly dependent on several parameters such as line configuration, conductor geometry, surface condition, operating voltage and weather conditions ...
Jordi-Roger Riba, Manuel Moreno-Eguilaz
doaj   +1 more source

Simulation of Stratospheric Water Vapor Trends: Impact on Stratospheric Ozone Chemistry [PDF]

, 2005
A transient model simulation of the 40-year time period 1960 to 1999 with the coupled climate-chemistry model (CCM) ECHAM4.L39(DLR)/CHEM shows a stratospheric water vapor increase over the last two decades of 0.7 ppmv and, additionally, a short-term ...
Grewe, V., Stenke, A.
core  

Modelling the Four‐Dimensional Power Line Sag Dynamics by Point Signature in Time‐Series Synthetic‐Aperture Radar Images

High Voltage, EarlyView.
ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma, Tao Li, Mahdi Motagh, Yan Liu, Yangmao Wen   +4 more
wiley   +1 more source

The Suaineadh Project : a stepping stone towards the deployment of large flexible structures in space [PDF]

, 2010
The Suaineadh project aims at testing the controlled deployment and stabilization of space web. The deployment system is based on a simple yet ingenious control of the centrifugal force that will pull each of the four daughters sections apart.
Cartmell, M.P., Dejene, F.Z., Drysdale, T., Flores, M.A., Gulzae, M.Y., Ismail, N., Khalid, M.U., Li, M., Maddock, C., Mallol, P., Mathieson, A., McRobb, M., Purcell, O., Reynolds, P., Ritterbusch, R., Sandqvist, W., Summerer, L., Tanveer, M.U., Tibert, G., Vasile, M., Whyte, G., Zafar, W., Zhang, J., Öberg, J.   +23 more
core  

Experimental and numerical results of active flow control on a highly loaded stator cascade [PDF]

, 2011
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence
Gmelin, C., Hecklau, Martin, Huppertz, A., Nitsche, W., Swoboda, M., Thiele, F.   +5 more
core   +1 more source

SDFs from Unoriented Point Clouds using Neural Variational Heat Distances

Computer Graphics Forum, EarlyView.
We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from unoriented point clouds. We first compute a small time step of heat flow (middle) and then use its gradient directions to solve for a neural SDF (right). Abstract We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from ...
Samuel Weidemaier, Florine Hartwig, Josua Sassen, Sergio Conti, Mirela Ben‐Chen, Martin Rumpf   +5 more
wiley   +1 more source

Handwriting speed in left‐handed children with right‐sided neonatal brachial plexus palsy

Developmental Medicine &Child Neurology, EarlyView.
This observational study investigated whether left‐handed children with right‐sided neonatal brachial plexus palsy (NBPP) exhibit reduced handwriting speed compared with typically developing left‐handed peers and explored determinants of any observed differences.
Rani De Pauw, Laura Tack, Anke Van Bladel, Ruth Van der Looven   +3 more
wiley   +1 more source

Spectral Characterization of the Life Stages and Physiological Responses of Diatraea saccharalis Fabricius (Lepidoptera: Crambidae) Larvae Parasitized by Cotesia flavipes Cameron (Hymenoptera: Braconidae)

Entomologia Experimentalis et Applicata, EarlyView.
Hyperspectral proximal sensing was used to characterize the life stages and physiological responses of Diatraea saccharalis and to detect parasitism by Cotesia flavipes. Distinct spectral signatures differentiated eggs, larval instars, pupae, and adults, as well as live, dead, and parasitized larvae.
Souradji I. Bachirou, David L. Rosalen, Sergio A. De Bortoli, Pedro G. Peixoto   +3 more
wiley   +1 more source

Analyzing the role of emissivity in stranded conductors for overhead power lines

International Journal of Electrical Power & Energy Systems
Emissivity and absorptivity are important parameters in overhead power line conductors that depend on the conductor surface condition, so their values change as the conductors age.
Jordi-Roger Riba, Yuming Liu, Manuel Moreno-Eguilaz   +2 more
doaj   +1 more source