Results 161 to 170 of about 44,838 (287)

Probabilistic estimation of reliable sensor spacing for wire break detection in prestressed concrete using acoustic emission technique

open access: yesStructural Concrete, EarlyView.
Abstract The acoustic emission (AE) technique has proven to be an effective method for detecting individual wire breaks in prestressed concrete structures affected by stress corrosion cracking (SCC). However, despite its widespread application, the quantitative assessment of AE monitoring reliability and optimal sensor placement remains unresolved ...
Max Fiedler, Steffen Marx
wiley   +1 more source

THE TERRITORIALIZATION OF ANGOLA'S REAL ESTATE FRONTIER: How Private‐led Housing Developments are Reshaping the Outskirts of Luanda

open access: yesInternational Journal of Urban and Regional Research, EarlyView.
Abstract Africa is recognized as the final frontier for urbanization and capitalism. Following a long wave of massive loans to promote state‐led developments, small private foreign and local developers are transforming the urban landscape on the outskirts of Luanda, forging partnerships with Angola's national and local governments and developing an ...
Higor Carvalho
wiley   +1 more source

Tuning the resonant wavelength of long period fiber gratings by etching the fiber's cladding

open access: yes, 2001
In this paper the resonant wavelength of a long period fiber grating (LPG) is tuned toward longer wavelength by etching the fiber, For LP04 and LP05 cladding modes', the tuning ranges of 23 and 81 nm are achieved, respectively. Also the dependence of the
Zhou KM,Chinese Acad Sci,Inst Semicond,Beijing 100080,Peoples R China.   +3 more
core  

Quantification of Direct Benefits of Functional Recovery‐Based Design for Seismic Resilience

open access: yesEarthquake Spectra, Volume 42, Issue 3, August 2026.
Lessons from recent major earthquakes have shown that current life‐safety‐centered seismic design practice falls short in ensuring a desirable post‐hazard recovery. Extensive economic losses, high demolition rates, and long recovery have signified a gap between design targets and society's expectations of seismic performance of code‐compliant buildings.
Kasra Habibi   +3 more
wiley   +1 more source

High-capacity optical communication relayed by multi-core amplifier on deployed submarine seven-core fiber cable. [PDF]

open access: yesCommun Eng
Chen Y   +20 more
europepmc   +1 more source

Ultra‐Low Loss Weakly Coupled Few‐Mode Hollow‐Core Anti‐Resonant Fiber Enabling Eight Channels via Differential Wall Thickness and Truncated Tubes

open access: yesNanophotonics, Volume 15, Issue 13, 13 July 2026.
A novel ultra‐low loss, weakly coupled few‐mode hollow‐core anti‐resonant fiber is realized through truncated tubes and differential wall thickness, which can support eight spatial modes as independent channels. The effective refractive index difference between adjacent modes is greater than 1.0 × 10−4, and the intrinsic loss of all target modes at ...
Biao Wang   +4 more
wiley   +1 more source

Design of Tapered Rib Spot-Size Converter with Double-Cladding Structure

open access: yes, 2004
A novel structure of spot-size converter is designed to allow low loss and large alignment tolerance between single-mode rib waveguide devices and fiber arrays theoretically.
Chen Shaowu   +4 more
core  

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