Results 211 to 220 of about 20,011,304 (290)
Novel indoor positioning system based on ultra-wide bandwidth. [PDF]
Vis Comput Ind Biomed Art, 2020 Wei Z +5 more
europepmc +1 more source
Carbon emission assessment of tunnel infrastructures: From construction to operation
Deep Underground Science and Engineering, EarlyView.This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long +4 more
wiley +1 more source
Investigation on tunnel stability considering pipe‐roof support with transparent soil technology
Deep Underground Science and Engineering, EarlyView.This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.The graphical abstract presents a steel segment–anchorage support system for open TBM tunnels under extremely intense rockburst conditions. The steel segment resists dynamic impact, while the anchorage structure restrains segment deformation and transfers loads into the rock.
Zhijun Li +4 more
wiley +1 more source
Sensing Framework for the Internet of Actors in the Value Co-Creation Process with a Beacon-Attachable Indoor Positioning System. [PDF]
Sensors (Basel), 2020 Zempo K, Arai T, Aoki T, Okada Y.
europepmc +1 more source
EcoEnergy, EarlyView.This review systematically examines how different transition metal compounds—such as binary and multinary metal oxides, halides, sulfides, and salts—exhibit thermochromism based on the d‐electron configurations of their transition metal cations. It focuses on three main mechanisms of thermochromism: phase transition, charge transfer, and bandgap change.
Jie Wang +5 more
wiley +1 more source
Fluorescent Colored Passive Radiative Cooling Based on Carbon Dots for Cooling Power Recovery
EcoEnergy, EarlyView.We demonstrate colored passive radiative coolers consisting of a highly reflective porous ceramic base covered by an eco‐friendly luminescent carbon dot‐polymer composite, with two types of carbon dots enabling conversion of either ultraviolet or visible light, respectively.
Lin Liang +12 more
wiley +1 more source
Indoor Positioning System with Android
, 2016 In this thesis, the indoor positioning problem is approached using an Android platform. This approach is based in tests with a set of algorithms and techniques. The performance of each algorithm and technique, in an indoor environment, is measured using data from a dataset of a known location mapped with a smartphone in a static and dynamic context ...
openaire +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This work reveals a “Photovoltaic‐Capacitance” coupling mechanism in stacked Ga2O3/ZnO devices, defining the ZnO/graphene interface as a novel Photovoltaic Dynamic‐Capacitor (PDC). The wavelength‐selective bipolar response enables a physical layer secure communication protocol based on ternary optical logic (“1,” “0,” “−1”).
Songqi Zhao +6 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Material science advances show how surface chemistry improves low‐temperature prepared TiO2‐SiO2 composite films. Using a colloidal‐based synthesis method instead of a powdered‐based one, researchers exploit hydroxyl groups' interfacial interactions to create nanoscale structures with superior physicochemical and mechanical stability.
Andraž Šuligoj +7 more
wiley +1 more source