Results 1 to 10 of about 79 (79)

Validation of a Probabilistic Prediction Model for Patients with Type 1 Diabetes Using Compositional Data Analysis

open access: yesMathematics, 2023
Glycemia assessment in people with type 1 diabetes (T1D) has focused on the time spent in different glucose ranges. As this time reflects the relative contributions to the finite duration of a day, it should be treated as compositional data (CoDa) that ...
Alvis Cabrera   +9 more
doaj   +1 more source

Physics-Based Relationship for Pore Pressure and Vertical Stress Monitoring Using Seismic Velocity Variations

open access: yesRemote Sensing, 2021
Previous studies examining the relationship between the groundwater table and seismic velocities have been guided by empirical relationships only. Here, we develop a physics-based model relating fluctuations in groundwater table and pore pressure with ...
Eldert Fokker   +3 more
doaj   +1 more source

4D Physics‐Based Pore Pressure Monitoring Using Passive Image Interferometry

open access: yesGeophysical Research Letters, 2023
This study introduces a technique for four‐dimensional pore pressure monitoring using passive image interferometry. Surface‐wave velocity changes as a function of frequency are directly linked to depth variations of pore pressure changes through ...
Eldert Fokker   +3 more
doaj   +1 more source

On the Green's function emergence from interferometry of seismic wave fields generated in high-melt glaciers: implications for passive imaging and monitoring [PDF]

open access: yesThe Cryosphere, 2020
Ambient noise seismology has revolutionized seismic characterization of the Earth's crust from local to global scales. The estimate of Green's function (GF) between two receivers, representing the impulse response of elastic media, can be reconstructed ...
A. Sergeant   +9 more
doaj   +1 more source

A Portable Low-Cost Ultrasound Measurement Device for Concrete Monitoring

open access: yesInventions, 2021
This paper describes a new ultrasonic measuring device called “W-Box”. It was developed based on the requirements of the DFG Forschergruppe (research unit) CoDA for a portable device for monitoring of concrete specimens, models and actual structures ...
Daniel Fontoura Barroso   +2 more
doaj   +1 more source

3D-Kernel Based Imaging of an Improved Estimation of (Qc) in the Northern Apulia (Southern Italy)

open access: yesApplied Sciences, 2021
We investigate crustal seismic attenuation by the coda quality parameter (Qc) in the Gargano area (Southern Italy), using a recently released dataset composed of 191 small earthquakes (1.0 ≤ ML ≤ 2.8) recorded by the local OTRIONS and the Italian INGV ...
Marilena Filippucci   +5 more
doaj   +1 more source

Detection of Multiple Cracks in Four-Point Bending Tests Using the Coda Wave Interferometry Method

open access: yesSensors, 2020
The enlargement of the cracks outside the permitted dimension is one of the main causes for the reduction of service life of Reinforced Concrete (RC) structures. Cracks can develop due to many causes such as dynamic or static load.
Xin Wang   +3 more
doaj   +1 more source

Review of temporal variations of underground medium based on seismic waves

open access: yes地球与行星物理论评
As a vibrant and ever-evolving planet, the Earth has a dynamic evolution process spanning more than a dozen orders of magnitude from seconds (e.g., seismic rupture) to millions of years (e.g., mantle convection).
Yi Meng, Zhikun Liu
doaj   +1 more source

Automatic detection and annotation of eastern Caribbean sperm whale codas

open access: yesScientific Reports
A key technology for sperm whale (Physeter macrocephalus) monitoring is the identification of sperm whale communication signals, known as codas. In this paper we present the first automatic coda detector and annotator. The main innovation in our detector
Guy Gubnitsky   +4 more
doaj   +1 more source

eBPF-Based Runtime Detection of Semantic DDoS Attacks in Linux Containers

open access: yesIEEE Access
Modern Distributed Denial-of-Service (DDoS)attacks increasingly target the application layer to exhaust CPU resources and disrupt service availability, particularly in containerized environments where isolation and diverse implementations complicate ...
S. Remya   +7 more
doaj   +1 more source

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