Results 1 to 10 of about 32,805 (155)

Rotational Cryptanalysis in the Presence of Constants [PDF]

open access: yesIACR Transactions on Symmetric Cryptology, 2016
Rotational cryptanalysis is a statistical method for attacking ARX constructions. It was previously shown that ARX-C, i.e., ARX with the injection of constants can be used to implement any function.
Tomer Ashur, Yunwen Liu
doaj   +8 more sources

Improved rotational‐XOR cryptanalysis of Simon‐like block ciphers [PDF]

open access: yesIET Information Security, 2022
Rotational‐XOR (RX) cryptanalysis is a cryptanalytic method aimed at finding distinguishable statistical properties in Addition‐Rotation‐XOR‐C ciphers, that is, ciphers that can be described only by using modular addition, cyclic rotation, XOR and the ...
Jinyu Lu   +4 more
doaj   +5 more sources

Contribution of an extensive medication-based comorbidity index (Rx-Risk) in explaining the excess mortality after hip fracture in older Norwegians: a NOREPOS cohort study

open access: yesBMJ Open, 2022
Objectives Patients with hip fracture are typically characterised by extensive comorbidities and excess mortality. Methods that account for a wide range of comorbidities are needed when attempting to identify causal associations in registry-based studies.
Øystein Karlstad   +6 more
doaj   +1 more source

Minimizing Leakage Magnetic Field of Wireless Power Transfer Systems Using Phase Difference Control

open access: yesEnergies, 2022
In this paper, we propose a method to reduce the leakage magnetic field from wireless power transfer (WPT) systems with series–series compensation topology by adjusting the phase difference between the transmitter (TX) coil current and the receiver (RX ...
Seongho Woo   +9 more
doaj   +1 more source

Isolation Improvement in Reflectarray Antenna-Based FMCW Radar Systems

open access: yesSensors, 2022
This paper presents an optimization of reflectarray-based RF sensors for detecting UAV and human presence. Our previous human detection radar system adapted a center-fed reflectarray antenna to a commercially available radar system, successfully ...
Hesham Yamani, Jihwan Yoon
doaj   +1 more source

Adaptive multi-layer structure with spatial-spectrum combination for hyperspectral image anomaly detection

open access: yesXibei Gongye Daxue Xuebao, 2021
A new algorithm for hyperspectral image anomaly detection is proposed by designing an adaptive multi-layer structure with spatial-spectral combination information, which is different from the traditional anomaly detection algorithms only considering the ...

doaj   +1 more source

Decoupling Network for Closely Spaced Tx/Rx Antennas Using a Directional Coupler and Transmission Lines

open access: yesInternational Journal of Antennas and Propagation, 2023
This paper presents an efficient decoupling network using a single directional coupler and transmission lines for closely spaced Tx/Rx antennas in single polarized radar applications. The isolation between both antennas can be enhanced by controlling the
Jeong-Hun Park   +2 more
doaj   +1 more source

Does a Novel-Developed Product of Wheelchair Incorporating Pelvic Support Prevent Forward Head Posture during Prolonged Sitting? [PDF]

open access: yesPLoS ONE, 2015
Disabled elderly individuals with kyphosis or loss of muscle strength often display forward head posture (FHP). This study aimed to determine the utility of a wheelchair incorporating pelvic support in preventing FHP in disabled elderly individuals.
Hiroshi Goda   +4 more
doaj   +1 more source

A limitation of Hartmann-Shack system in measuring wavefront aberrations for patients received laser refractive surgery. [PDF]

open access: yesPLoS ONE, 2015
To explore the relationship between ablation parameters of myopic laser surgery and measurement area of wavefront aberration (WA) with Hartmann-Shack wavefront sensor.58 subjects undergone myopic laser surgeries and 74 uncorrected myopic subjects were ...
Ying Wu, Ji C He, Xing T Zhou, Ren Y Chu
doaj   +1 more source

A Local Oscillator Phase Compensation Technique for Ultra-Wideband Stepped-Frequency Continuous Wave Radar Based on a Low-Cost Software-Defined Radio

open access: yesSensors, 2021
The paper discusses a way to configure a stepped-frequency continuous wave (SFCW) radar using a low-cost software-defined radio (SDR). The most of high-end SDRs offer multiple transmitter (TX) and receiver (RX) channels, one of which can be used as the ...
Kazunori Takahashi, Takashi Miwa
doaj   +1 more source

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