Results 51 to 60 of about 555,024 (332)

New proposal for the detection of concealed weapons [PDF]

open access: yes, 2007
A new concealed weapon detection system able to work in open areas without invading individual privacy is presented. This approach is based on pulse induction technology.
Agurto Goya, Alan, Sibley, Martin J.N.
core  

Spectral‐Integrated Thermal Absorption Model for Broadband Laser‐Protective Reflectors Under Supercontinuum Irradiation

open access: yesAdvanced Science, EarlyView.
A universal laser absorption model based on spectral integration enables the design of ultrabroadband dielectric multilayer reflectors for laser protection. The model reveals exponential decay of absorption characterized by two coefficients, and a design that prioritizes short‐wavelength reflection minimizes heating.
Yukang Feng   +8 more
wiley   +1 more source

Boosting Photo‐Pyroelectric Effect via Tunable Polarization and Interfacial Defect Engineering

open access: yesAdvanced Science, EarlyView.
This study reports Ba(Ti0.85Zr0.15)O3 nanocatalysts with enhanced polarization and oxygen‐vacancy‐rich interfaces for efficient NIR‐II photo‐pyroelectric therapy. Zr doping boosts the pyroelectric coefficient and accelerates polarization switching, while oxygen vacancies improve photothermal conversion and surface reactivity.
Yanli Huang   +13 more
wiley   +1 more source

Research on Dynamic Target Search for Multi-UAV Based on Cooperative Coevolution Motion-Encoded Particle Swarm Optimization

open access: yesApplied Sciences
Effectively strategizing the trajectories of multiple Unmanned Aerial Vehicles (UAVs) within a dynamic environment to optimize the search for and tracking of mobile targets presents a formidable challenge.
Yiyuan Li   +5 more
doaj   +1 more source

Stay calm! Regulating emotional responses by implementation intentions: assessing the impact on physiological and subjective arousal [PDF]

open access: yes, 2016
Implementation intention (IMP) has recently been highlighted as an effective emotion regulatory strategy (Schweiger Gallo et al., 2009). Most studies examining the effectiveness of IMPs to regulate emotion have relied on self-report measures of emotional
Berstein A. S.   +10 more
core   +1 more source

Photonuclear Population of 229m,gTh in Th‐Doped Crystals Toward Nuclear Clock Development

open access: yesAdvanced Science, EarlyView.
This study demonstrates a novel photonuclear approach for producing the nuclear clock isomer 229mTh in thorium‐doped crystals, overcoming current supply limitations. Through cross‐section calculations and Monte Carlo simulations, we identify optimal crystal materials and irradiation conditions, achieving high signal‐to‐noise ratios.
Hao‐Yang Lan   +9 more
wiley   +1 more source

An Improved Method for Predicting the Remaining Useful Life Using a Spatial–Temporal Feature Extraction Network With Attention Mechanism

open access: yesIEEE Access
The prediction of the remaining useful life (RUL) of mechanical equipment is of vital importance to its operation and maintenance. Deep learning methods can effectively extract degradation information closely related to equipment RUL from extensive ...
Xiaojia Yan, Weige Liang, Shiyan Sun
doaj   +1 more source

Coil Gun Turret Control Using A Camera [PDF]

open access: yes, 2011
--- A conventional weapon usually by pointing to the target aimed by using hands. It is considered less effective and efficient in terms of military service because of spending lots of time to chase the target.
Iflachah, Emillia   +2 more
core  

‘Somewhere We Can Call Home and…Be Normal’: Findings From the Justice Housing Programme Evaluation

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT The relationship between homelessness or unstable housing and reincarceration is well documented. The initial month after a person is released from custody is a period of particular vulnerability, with an increased risk of homelessness and return to prison.
Helen Taylor, Lorana Bartels
wiley   +1 more source

Quantum Damped Harmonic Oscillator [PDF]

open access: yes, 2012
In this chapter we treat the quantum damped harmonic oscillator, and study mathematical structure of the model, and construct general solution with any initial condition, and give a quantum counterpart in the case of taking coherent state as an initial ...
Fujii, Kazuyuki
core   +2 more sources

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