Results 11 to 20 of about 409,388 (307)

SYNERGY OF MULTI-STAKEHOLDERS IN DEFENDING INDONESIA FROM CYBER THREATS

open access: yesJournal of Social Political Sciences, 2021
This paper argues that currently the threat of cyber-attacks has become a real threat that has the potential to develop in Indonesia. With the presence of these cyber-attacks, the government must take advantage of the synergy between state multi-stake ...
Aththaariq Rizki   +1 more
doaj   +1 more source

Narrow band space scanning two-dimensional linear frequency diverse array radar

open access: yesThe Journal of Engineering, 2019
Two–dimensional (2D) linear frequency diverse array (FDA) concept is extended to scan a 2D wide angular sector. This is achieved by highly unequal frequency increments in orthogonal 2D directions of the array.
Ramazan Çetiner, Altunkan Hizal
doaj   +1 more source

A Sampling-Based Approach for Achieving Desired Patterns of Probabilistic Coverage with Distributed Sensor Networks

open access: yesSensors, 2023
A new method is derived for finding the best positions in which to locate the sensors in a distributed sensor network in order to achieve a desired variation, or pattern, in spatial coverage over a specified domain.
Russell Costa, Thomas A. Wettergren
doaj   +1 more source

Violence and warfare in prehistoric Japan [PDF]

open access: yes, 2017
The origins and consequences of warfare or largescale intergroup violence have been subject of long debate. Based on exhaustive surveys of skeletal remains for prehistoric hunter-gatherers and agriculturists in Japan, the present study examines levels of
Arimatsu, Yui   +5 more
core   +1 more source

Finite Element Modeling of K-Monel Bolts under Static Loading and Dynamic Shock Loading

open access: yesShock and Vibration, 2013
The Naval Undersea Warfare Center has funded a project to investigate the accuracy of various bolt models used to represent actual shipboard bolted connections within an analytical shock survivability assessment.
Kevin Behan   +3 more
doaj   +1 more source

Spatial Spectral Band Selection for Enhanced Hyperspectral Remote Sensing Classification Applications

open access: yesJournal of Imaging, 2020
Despite the numerous band selection (BS) algorithms reported in the field, most if not all have exhibited maximal accuracy when more spectral bands are utilized for classification.
Ruben Moya Torres   +5 more
doaj   +1 more source

Fin Whale Song Patterns Shift Over Time in the Central North Pacific

open access: yesFrontiers in Marine Science, 2020
Male fin whales sing by producing 20 Hz pulses in regular patterns of inter-note intervals. While singing, fin whales may also alternate the frequency ranges of their notes.
Tyler A. Helble   +5 more
doaj   +1 more source

Analysis of Mobile Malware: A Systematic Review of Evolution and Infection Strategies

open access: yesJournal of Information Security and Cybercrimes Research, 2021
The open-source and popularity of Android attracts hackers and has multiplied security concerns targeting devices. As such, malware attacks on Android are one of the security challenges facing society.
Ashawa Moses, Sarah Morris
doaj   +1 more source

Design and Testing of a Low-Tech DEW Generator for Determining Electromagnetic Immunity of Standard Electronic Circuits

open access: yesEnergies, 2021
This article describes the effect of high-power electromagnetic environments (HPEMs) on the operation of all basic elements of electrical power networks. Frequency bands are defined for the HPEM environments. Attention is focused particularly on directed
Libor Dražan   +2 more
doaj   +1 more source

Confidence Intervals for Exceedance Probabilities with Application Tto Extreme Ship Motions

open access: yesRevstat Statistical Journal, 2017
Statistical inference of a probability of exceeding a large critical value is studied in the peaks-over-threshold (POT) approach. The focus is on assessing the performance of the various confidence intervals for the exceedance probability, both for the ...
Dylan Glotzer   +4 more
doaj   +1 more source

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