Results 61 to 70 of about 43,271 (213)

The Threat from European Missile Defence System to Russian National Security

open access: yesVestnik MGIMO-Universiteta, 2014
The article analyses the political and military aspects of progress in the dialogue between Russia and the U.S./NATO on cooperation in missile defense; investigates the past experiences and current state of cooperation between Russia and the Alliance on ...
Alexey I. Podberezkin   +1 more
doaj   +5 more sources

Bolide Light Curve Systematics from 75 Recovered Meteorites

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract How does the energy deposition profile (light curve), deceleration, and penetration depth in Earth's atmosphere depend on asteroid composition and meteorite type? Here, we present the light curve and velocity profile of 75 bolides from camera‐documented meteorite falls.
Peter Jenniskens   +3 more
wiley   +1 more source

Fish Scales: A Multifunctional Biomaterial from Nature

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

From bottle rockets to tomahawks : the production of anti-ship missiles, land attack cruise missiles, and short-range ballistic missiles [PDF]

open access: yes, 2018
What explains the variation in the sophistication of states military production capabilities? This dissertation analyzes this broader question by looking at the development of production capabilities of an arms sector that has required constant ...
Fahrenkopf, Nolan
core   +1 more source

Strategic and Discursive Shifts in Türkiye's Perceptions of NATO, 1952–2020

open access: yesMiddle East Policy, Volume 33, Issue 3, Autumn (Fall) 2026.
Abstract With crises intensifying across the Middle East, the Türkiye‐NATO relationship has become a matter of vital interest for global security. Employing a mixed‐methods approach, this study investigates shifts in Ankara's perceptions of NATO from the year of Türkiye's accession in 1952 through 2020. Officials’ views are examined through an analysis
Melih Nadi Tutan
wiley   +1 more source

Electron optics in ballistic graphene [PDF]

open access: yes, 2015
This thesis is centered on the experimental observation of electron-optics phenomena in graphene. In Chapter 2, graphene is introduced and the ability to form p-n junctions, with particular regard to electron optics experiments, is discussed.
Rickhaus, Peter
core   +1 more source

Fabrication and Test of Flexible Joint Thrust Vector Controlling System in SRM Using Polyurethane Elastomer [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2012
Outer space ballistic missiles use thrust vector control system and it is because aerodynamic surfaces are not efficient in thin air.Flexible joint is the most useful type of thrust vector control system through satellite transporters and ballistic ...
H. Mahdavy Moghaddam, M. M. Javadi
doaj  

ZnO Nanowires for Ultraviolet Detection: Recent Developments, Challenges, and Future Outlook

open access: yesAdvanced Electronic Materials, Volume 12, Issue 16, 24 August 2026.
This work provides a comprehensive review of Zinc Oxide (ZnO) nanowires for high‐performance ultraviolet (UV) photodetection. By analyzing unique device physics and various detector architectures, it unveils strategies to overcome current performance limitations regarding speed and sensitivity.
Ala K. Jehad   +4 more
wiley   +1 more source

Basins of Attraction and Escape in Pendulum‐Type Potentials with Quadratic Air Drag

open access: yesZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 8, August 2026.
ABSTRACT Quadratic air drag is a common dissipative mechanism at moderate to high velocities, yet in nonlinear one‐degree‐of‐freedom systems, it typically blocks closed‐form solutions and energy‐based phase‐plane partitions. We study the autonomous class ẍ+α(x)|ẋ|ẋ+β(x)sgn(ẋ)+V′(x)=0,$$\begin{equation*} \ddot{x}+\alpha (x)\,|\dot{x}|\,\dot{x}+\beta
Attila Genda   +2 more
wiley   +1 more source

The Length of Martian Crater Rays and Their Relation to Lunar Cold Spots

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract Impact‐generated crater rays are well‐documented on the Moon, with most appearing as high‐albedo streaks extending radially from a crater's center. On Mars, however, crater rays are significantly rarer and discernible only through thermal imaging due to their lower thermal inertia compared to surrounding terrain.
Trevor P. Erwin   +3 more
wiley   +1 more source

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