Results 31 to 40 of about 5,965,749 (294)

An operational procedure for rapid flood risk assessment in Europe [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2017
The development of methods for rapid flood mapping and risk assessment is a key step to increase the usefulness of flood early warning systems and is crucial for effective emergency response and flood impact mitigation. Currently, flood early warning
F. Dottori   +5 more
doaj   +1 more source

Thinking in Space: The Role of Geography in National Security Decision-Making (August 2019) [PDF]

open access: yes, 2019
Being able to "think in space" is a crucial tool for decision-makers, but one that is often deemphasized. In order to improve its ability to think in space, the national security community ought to objectively assess how effectively it is ...
Rhodes, Andrew
core   +1 more source

Selected Legal Challenges Relating to the Military use of Outer Space, with Specific Reference to Article IV of the Outer Space Treaty [PDF]

open access: yesPotchefstroom Electronic Law Journal, 2015
Since the end of the Second World War the potential use of outer space for military purposes persisted to be intrinsically linked to the development of space technology and space flight.
Anél Ferreira-Snyman
doaj   +1 more source

HPoC: A Lightweight Blockchain Consensus Design for the IoT

open access: yesApplied Sciences, 2022
The research topics of this paper are the data security of the edge devices and terminals of the Internet of Things (IoT) and the consensus design of a lightweight blockchain for the Internet of Things.
Zixiang Nie, Maosheng Zhang, Yueming Lu
doaj   +1 more source

Integrated Space Situational Awareness Systems: SDA and SSA – Advantages and Limitations

open access: yesPolish Political Science Yearbook, 2021
SDA (Space Domain Awareness) and SSA (Space Situational Awareness – SSA) have been defined as comprehensive knowledge of space objects and the ability to track, understand, and predict their future location.
Małgorzata Polkowska
doaj   +1 more source

Securitatea spațială bazată pe Inteligența Artificială: tendințe viitoare și imperative strategice [PDF]

open access: yesRevista Română de Informatică și Automatică
This paper analyses the integration of Artificial Intelligence (AI) into the security strategies of critical and space infrastructures, emphasizing the transformative potential of AI in enhancing threat detection, response, and overall system resilience.
Ulpia-Elena BOTEZATU   +1 more
doaj   +1 more source

Changing Homeland Security In 2010: Was Homeland Security Useful? [PDF]

open access: yes, 2011
This article appeared in Homeland Security Affairs (February 2011), v.7 no.1The failure of public safety disciplines to prevent the September 11, 2001 attack gave 'homeland security' its chance to emerge as a competing paradigm for organizing the nation'۪
Bellavita, Christopher
core   +2 more sources

GERMAN SPACE STANDORT: THE SPACE SECURITY STRATEGY AND THE REGIONAL BALANCE OF POWER IN EUROPE [PDF]

open access: yesНаучно-аналитический вестник Института Европы РАН
This article examines Germany’s first national Space Security Strategy as a key element in the ongoing transformation of Europe’s security architecture.
Vladislav B. Belov
doaj   +1 more source

A Time–Frequency Domain Analysis Method for Variable Frequency Hopping Signal

open access: yesSensors
A variable frequency hopping (VFH) signal is a kind of frequency hopping (FH) signal that varies both in frequency and dwell time. However, in radio surveillance, the existing methods for unidentified signals using VFH cannot be effectively handled.
Zhengzhi Zeng   +3 more
doaj   +1 more source

A HRWS SAR Motion Compensation Method with Multichannel Phase Correction

open access: yesRemote Sensing
The multichannel synthetic aperture radar (SAR) possesses the capability to acquire high-resolution, wide-swath SAR imagery, which has great potential for application.
Liming Zhou   +6 more
doaj   +1 more source

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