Results 51 to 60 of about 11,432 (211)

Evolution of non-thermal emission from shell associated with AGN jets [PDF]

, 2011
We explore the evolution of the emissions by accelerated electrons in shocked shells driven by jets in active galactic nuclei (AGNs). Focusing on powerful sources which host luminous quasars, we evaluated the broadband emission spectra by properly taking
Ito, H., Kawakatu, N., Kino, M., yamada, S.   +3 more
core   +1 more source

UUVs support to naval operations

Scientific Bulletin of Naval Academy, 2020
The article analyzes the environmental conditions present in the Black Sea basin and, in this view, the opportunity of employment of unmanned underwater platforms, especially in the contested littoral area. The introductory part of the article is presented up to date UUVs platforms in use with their capabilities and limitations.
openaire   +1 more source

A Review of Modeling and Control Techniques for Unmanned Aerial Vehicles

Engineering Reports, Volume 7, Issue 6, June 2025.
By systematically classifying UAV modeling techniques and comparing control methods, this paper addresses a notable gap in the current literature. Furthermore, it highlights emerging trends and challenges in UAV control systems, providing valuable insights to guide future research toward enhancing the stability, efficiency, and adaptability of ...
Elisabeth Andarge Gedefaw, Nardos Belay Abera, Chala Merga Abdissa   +2 more
wiley   +1 more source

Dynamic analysis of road vehicle-bridge systems under turbulent wind by means of Finite Element Models [PDF]

, 2011
When an automobile passes over a bridge dynamic effects are produced in vehicle and structure. In addition, the bridge itself moves when exposed to the wind inducing dynamic effects on the vehicle that have to be considered.
Antolin Sanchez, Pablo, Astiz Suárez, Miguel Angel, Goicolea Ruigómez, José María, Oliva Quecedo, Javier   +3 more
core   +1 more source

Axion monodromy in a model of holographic gluodynamics

, 2011
The low energy field theory for N type IIA D4-branes at strong 't Hooft coupling, wrapped on a circle with antiperiodic boundary conditions for fermions, is known to have a vacuum energy which depends on the $\theta$ angle for the gauge fields, and which
A Adams, A Arvanitaki, A Arvanitaki, A Brandhuber, A Brandhuber, A D’Adda, A Vilenkin, Albion Lawrence, C Csáki, DH Lyth, DJ Gross, E Silverstein, E Witten, E Witten, E Witten, E Witten, G Efstathiou, GT Horowitz, GT Horowitz, HL Verlinde, J Barbon, J Polchinski, L Giusti, L McAllister, L Randall, M Berg, M Kruczenski, MA Shifman, Matthew M. Roberts, N Itzhaki, N Kaloper, N Kaloper, R Güven, R Mello Koch de, S Dubovsky, S Hawking, S Kachru, S Panda, S-J Rey, Sergei Dubovsky, X Dong   +40 more
core   +1 more source

Sub‐Tree Scheduling for Wireless Sensor Networks With Partial Coverage: Complexity and Polynomial‐Size Formulations

Networks, Volume 85, Issue 3, Page 326-347, April 2025.
ABSTRACT Given an undirected graph G$$ G $$ whose edge weights change over s$$ s $$ time slots, the sub‐tree scheduling for wireless sensor networks with partial coverage asks to partition the vertices of G$$ G $$ in s$$ s $$ non‐empty trees such that the total weight of the trees is minimized.
Michele Barbato, Nicola Bianchessi
wiley   +1 more source

Communication and Networking Technologies for Unmanned Underwater Vehicle Swarms: A Survey

IEEE Open Journal of the Communications Society
In modern network systems, unmanned underwater vehicle (UUV) swarms are crucial for enabling flexible, resilient, and efficient communication, ensuring real-time coordination, and optimizing resource usage for large-scale, complex underwater missions ...
Tianyi Ma, Sai Zeng, Yanling Zhou
doaj   +1 more source

Morphotropic Phase Boundaries in Ferromagnets: Tb_{1-x}Dy_xFe_2 Alloys

, 2013
The structure and properties of the ferromagnet Tb_{1-x}Dy_xFe_2 (Terfenol-D) are explored through the morphotropic phase boundary (MPB) separating ferroic phases of differing symmetry.
Bergstrom Jr., Richard, Briber, Robert, Cullen, James, Dennis, Cindi, Garlea, V. Ovidiu, Laver, Mark, Wuttig, Manfred, Zavalij, Peter   +7 more
core   +1 more source

Experimental Verification of a Depth Controller using Model Predictive Control with Constraints onboard a Thruster Actuated AUV [PDF]

, 2012
In this work a depth and pitch controller for an autonomous underwater vehicle (AUV) is developed. This controller uses the model predictive control method to manoeuvre the vehicle whilst operating within the defined constraints of the AUV actuators ...
Furlong, M., Phillips, A.B., Rogers, E., Steenson, Leo V., Turnock, S.R.   +4 more
core   +1 more source

DYNAMICS AND SIMULATION OF BIOROBOTIC UUV

Mechanics, 2013
This paper describes a dynamics model of a biorobotic unmanned underwater vehicle (UUV). And a new accurate model for calculating fluid dynamics of flapping hydrofoil is also incorporated into the simulation. The model is used to simulate the motion of the biorobotic UUV which used a compressed body propelled by four flapping hydrofoils.
DU Xiao-xu, SONG Bao-wei, PAN Guang
openaire   +1 more source