Bruce Carter, Chuin-Shan Chen, L. Paul Chew, Nikos Chrisochoides, Guang R. Gao, Gerd Heber, Anthony R. Ingraffea, Roland Krause, Chris Myers, Démian Nave, Keshav Pingali, Paul Stodghill, Stephen A. Vavasis, Paul A. Wawrzynek, Parallel FEM Simulation of Crack Propagation - Challenges, Status, and Perspectives, IPDPS Workshops 2000, 443-449.
B. Carter, C. S. Chen, L. P. Chew, N. Chrisochoides, G. R. Gao, G. Heber, A. R. Ingraffea, R. Krause, C. Myers, D. Nave, K. Pingali, P. Stodghill, S. Vavasis, P. A. Wawrzynek, "Parallel FEM Simulation of Crack Propagation - Challenges, Status, and Perspectives", Lecture Notes in Computer Science, Vol. 1800, pp. 443-449, Springer Verlag (2000).
In my fourth one-on-one with Verizon Chief Networking Officer Nicki Palmer, we discussed spectrum, propagation challenges, IoT, network densification ahead of its 5G fixed and mobile service deployments, and how the carrier is dedicated to delivering high quality of service.
For example, bird populations have been found to adapt song modulation rates in forest versus open-country environments to overcome propagation challenges (Krebs and Davies 1993).
In situ quantification of the role of heterogeneities on fracture propagation is challenging because of the technical difficulty to image the interior of a 3D medium at high spatial resolution.
In addition to the huge number of users and messages exchanged, context propagation creates unique challenges in the realm of distributed systems[9]: it is highly dynamic, does not require user intervention, and has different levels of urgency.
The design of numerical methods for such general wave propagation problems is challenging because the energy conserving property has to be incorporated in the numerical algorithms in order to minimize the phase or shape errors after long time integration.
In an era of significant air traffic expansion characterized by a rising congestion of the radiofrequency spectrum and a widespread introduction of Unmanned Aircraft Systems UAS, Global Navigation Satellite Systemsms (GNSS) are being exposed to a variety of threats including signal interferences, adverse propagation effects and challenging platform-satellite relative dynamics.
Finally, conclusions are presented in Section 8. Consider a geographic area with challenging propagation characteristics, i.e. with shadowing and large-scale variations in path loss due to topographic and man-made features.
This is particularly relevant to forest trees, whose long generation times pose substantive challenges to traditional propagation approaches such as rooting of cuttings, and to genetic improvement programs based on conventional breeding.
However, harsh smart grid environment propagation characteristics cause great challenges in the reliability of WSN communications in smart grid applications.
