Results 21 to 30 of about 409,388 (307)

Force plate vertical jump scans are not a valid proxy for physical fitness in US special warfare trainees

Frontiers in Physiology, 2022
Background: The United States Air Force Special Warfare Training Wing (SWTW) administers a comprehensive physical fitness test to active duty Airmen entering the Special Warfare training pipeline.
W. Casan Scott, W. Casan Scott, Ben R. Hando, Ben R. Hando, Cody R. Butler, John D. Mata, Jacob F. Bryant, Siddhartha S. Angadi   +7 more
doaj   +1 more source

Two Visually Meaningful Correlation Measures for Comparing Calculated and Measured Response Histories

Shock and Vibration, 1994
Two visually meaningful correlation measures are proposed for comparing calculated and measured response histories. One is an error index which is a simplification of RSS (root-sum-square) error factor, and the other is an inequality index that is a ...
Benjamin Whang, William E. Gilbert, Stephen Zilliacus   +2 more
doaj   +1 more source

Specific Emitter Identification of Frequency Hopping Signals Based on Feature Extraction and Deep Residual Network

IEEE Access, 2022
In the modern war with complex and changeable electromagnetic environment, Specific Emitter Identification (SEI) is an important and difficult problem, which is of great significance in obtaining intelligence information, identifying ourselves or foe ...
Mingdi Li, Jun Xie, Hongjie Yang, Mengjie Geng, Jichuan Liu   +4 more
doaj   +1 more source

One-hundred years (and counting) of blast-associated traumatic brain injury [PDF]

, 2018
Blast-associated traumatic brain injury (TBI) has become one of the signature issues of modern warfare and is increasingly a concern in the civilian population due to a rise in terrorist attacks.
Fullerton, Josephine L., Kinch, Kevin, Stewart, William   +2 more
core   +1 more source

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

Advanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee, Yun‐Tae Kim, Hwarang Choi, Sanghwan Park, Seongyeop Lim, Chang Young Lee   +5 more
wiley   +1 more source

Twelve years of fin whale song evolution in the central North Pacific

Frontiers in Marine Science
Fin whale song consists of low frequency notes arranged in regular, repeating patterns of note type pairings and inter-note intervals (INIs). In the central North Pacific, fin whales use two downswept note types (A and B notes) with both singlet and ...
Tyler A. Helble, Regina A. Guazzo, Peter J. Dugan, Gabriela C. Alongi, Cameron R. Martin, Stephen W. Martin, E. Elizabeth Henderson   +6 more
doaj   +1 more source

Prospects of FMCW-based frequency diverse array radar

The Journal of Engineering, 2019
The linear frequency modulated (LFM) frequency modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is investigated in detail. The radar operates as a linear pulsed FMCW/FDA in the transmission (TX) mode while it operates as
Ramazan Çetiner, Çağrı Çetintepe, Şimşek Demir, Altunkan Hizal   +3 more
doaj   +1 more source

A discourse in conflict : resolving the definitional uncertainty of cyber war : a thesis presented in partial fulfilment for the requirements for the degree of Master of Arts in Defence and Security Studies at Massey University, Albany, New Zealand [PDF]

, 2017
Since emerging in academic literature in the 1990s, definitions of ‘cyber war’ and cyber warfare’ have been notably inconsistent. There has been no research that examines these inconsistencies and whether they can be resolved.
Hughes, Dan
core  

Warfare, Fiscal Capacity, and Performance [PDF]

, 2012
We exploit differences in casualties sustained in pre-modern wars to estimate the impact of fiscal capacity on economic performance. In the past, states fought different amounts of external conflicts, of various lengths and magnitudes.
A. Alesina, A. Chanda, A. Gerschenkron, C. Tilly, D. Acemoglu, D. Acemoglu, D. Acemoglu, D. Acemoglu, D. Acemoglu, D. Acemoglu, D. Cantoni, D. Comin, D. Kang, D. North, D. Rodrik, E. Glaeser, E. Prescott, G. Brennan, G. Cox, J. B. De Long, J. Brewer, J. Cardoso, J. Diamond, J. Frankel, J. Herbst, J. Hines, J. Keegan, J. L. Rosenthal, J. Migdal, J. Mokyr, J. Mokyr, K. Klein Goldewijk, K. Scheve, K. Scheve, K. Wittfogel, L. Guiso, L. Magnusson, L. Ohanian, L. Putterman, M. Centeno, M. Clodfelter, M. Dincecco, M. Dincecco, M. Dincecco, M. Levi, M. Sarkees, Mark Dincecco, Mauricio Prado, N. Ferguson, N. Nunn, N. Nunn, O. Galor, O. Galor, O. Galor, P. Hoffman, P. Lindert, P. O’Brien, Q. Ashraf, R. Bates, R. Hall, R. La Porta, R. Wade, S. Engerman, S. Knack, T. Aidt, T. Besley, T. Besley, T. Besley, T. Besley, T. Conley, T. Persson, T. Persson, V. Bockstette   +72 more
core   +1 more source

Formation Control of Multi‐Agent System with Local Interaction and Artificial Potential Field

Advanced Robotics Research, EarlyView.
This article proposes a local interaction‐based formation control method for Multi‐Agent system, integrating consensus and leader‐follower strategies with a stress response mechanism—artificial potential field to reduce communication overhead and enable obstacle avoidance. Experimental results on triangular, square, and hexagonal formations confirm its
Luoyin Zhao, Zheping Yan, Yuqing Wang, Raye Chen‐Hua Yeow   +3 more
wiley   +1 more source