Results 151 to 160 of about 16,319,095 (224)

Investigation on the mechanical behavior of the multiple‐layered lining structure of a water conveyance tunnel with high internal water pressure

Deep Underground Science and Engineering, EarlyView.
This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi, Shimin Wang, Chang Liu, Zhiyu Lin, Chuan He   +4 more
wiley   +1 more source

High accuracy indoor positioning system using Galois field-based cryptography and hybrid deep learning. [PDF]

Sci Rep
Hazzazi MM, Shukla PK, Shukla PK, Alblehai F, Nooh S, Shah MA.   +5 more
europepmc   +1 more source

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt, Yu Pan, Heinz Konietzky, Fei Wang   +3 more
wiley   +1 more source

Optimization of ultra-low volume spray for multi-drone based on wind sensitivity. [PDF]

Sci Rep
Zheng D, Wang B, Lin Y, Shi W, Liu P.
europepmc   +1 more source

Exact Analytic Proof of the Birch and Swinnerton-Dyer Conjecture for Elliptic Curves over Global Number Fields via Motivic L-Function Foliation, Finiteness of Tate-Shafarevich Groups, and Non-Commutative Iwasawa Isomorphisms

<p><b>Technical Report Identifier:</b> SHAHEEN-TR-2026-F16 (Falcon Impossibility Sixteen - F16)<br><b>Author:</b> Eng. Ayman Al-Araishi (ORCID: 0009-0006-4962-9557)<br><b>Affiliation:</b> Shaheen Apex AI Research Laboratories, Damascus, Syrian Arab Republic<br><b>Algorithm Reference:</
openaire   +1 more source

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Deep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu, Xiang Ci, Weizhong Chen, Jianping Yang   +3 more
wiley   +1 more source

A Novel Key Distribution for Mobile Patient Authentication Inspired by the Federated Learning Concept and Based on the Diffie-Hellman Elliptic Curve. [PDF]

Sensors (Basel)
AbuAlghanam O, Alazzam H, Almobaideen W, Saadeh M, Saadeh H.   +4 more
europepmc   +1 more source

Developing a universal tunnel span classification from global tunnel databases

Deep Underground Science and Engineering, EarlyView.
A universal tunnel span classification system is introduced that incorporates tunnel span, cross‐sectional area, typical tunnel types, and intended uses. Representative flatness ratio values are also provided for each span class. The classification is derived from a comprehensive database of 450 tunnel profiles from 47 countries.
Simon Heru Prassetyo, Inzagi Suhendar, Semmy Andrew Anugerah Djawa Tagi, Bonifacio Bondan Satryojati, Dzakwan Naufal Pratama, Yeremia Sintong Damero, Yudhidya Wicaksana, Erwin Lim, Ridho Kresna Wattimena   +8 more
wiley   +1 more source

Lightweight Secure Protocols for Low-Powered IoT Devices: Modern Ciphers, Authentication, and Machine Learning-Based Intrusion Detection. [PDF]

Sensors (Basel)
Alsobaie D, Khan U, Alsabhan W.
europepmc   +1 more source

Spatio‐temporal dynamics of ringed seal density and habitat use in the Arctic's Last Ice Area

Ecography, EarlyView.
The Arctic is warming at approximately four times the global rate, driving widespread decline in sea ice extent, thickness, and seasonal duration. The ecological consequences of these rapid changes remain poorly understood within the Last Ice Area, a region that includes northern Ellesmere Island and the northwest of Greenland, projected to retain ...
Roxanne D. MacLean, Gregory W. Thiemann, Steven H. Ferguson, Katie R.N. Florko, Cody G. Carlyle, Kelsey F. Johnson, Lisa C. Matthes, Christine Michel, Brent G. Young, David J. Yurkowksi   +9 more
wiley   +1 more source