Results 51 to 60 of about 26,844 (306)
Toward secure and usable indoor positioning
, 2022 Zhang, RuiRecent years have witnessed growing interests from both academia and industry in developing effective Indoor Positioning Systems (IPSes).
Li, Yunzhi
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Advanced Materials, EarlyView.In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal +9 more
wiley +1 more source
A High-Accuracy Indoor-Positioning Method with Automated RGB-D Image Database Construction
Remote Sensing, 2019 High-accuracy indoor positioning is a prerequisite to satisfy the increasing demands of position-based services in complex indoor scenes. Current indoor visual-positioning methods mainly include image retrieval-based methods, visual landmarks-based ...
Runzhi Wang +4 more
doaj +1 more source
Broadband Ultrasonic Location Systems for Improved Indoor Positioning [PDF]
, 2006 Ultrasonic location systems are a popular solution for the provision of fine-grained indoor positioning data. Applications include enhanced routing for wireless networks, computer-aided navigation, and location-sensitive device behavior. However, current
Mike Hazas +3 more
core
Spatial models for context-aware indoor navigation systems: A survey [PDF]
, 2012 This paper surveys indoor spatial models developed for research fields ranging from mobile robot mapping, to indoor location-based services (LBS), and most recently to context-aware navigation services applied to indoor environments.
Christophe Claramunt +6 more
core +1 more source
Indoor Positioning Methods Based on Dual Feet-Mounted IMUs With Distance Constraints
, 2023 The zero velocity update (ZUPT) offers an effective correction method for the sensor drift in indoor positioning systems using foot-mounted inertial measurement units (IMUs).
Ma, Xiaofeng, Särkkä, Simo
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Advanced Materials, EarlyView.Elephant‐skin‐inspired crack networks are programmed in porous diatomaceous earth (DE)‐cement composites using substrate‐guided, stress‐concentration induced fracture. The resulting crack lattices act as capillary conduits that redistribute water, while the porous matrix stores moisture.
Qingya Huang +5 more
wiley +1 more source
Low-Cost Indoor Positioning Application Based on Map Assistance and Mobile Phone Sensors
Sensors, 2018 Current mainstream navigation and positioning equipment, intended for providing accurate positioning signals, comprise global navigation satellite systems, maps, and geospatial databases.
Yi-Shan Li, Fang-Shii Ning
doaj +1 more source
Tag Positioning Method Based on RFID Coverage and Scanning [PDF]
Jisuanji gongcheng, 2017 In order to improve the precision of Received Signal Strength Indication(RSSI) indoor positioning,this paper puts forward an indoor RSSI positioning method based on reference tag and rotating Radio Frequency Identification(RFID) reader.In this method,tag
LI Qiang,WANG Mei,LIU Zhenghong
doaj +1 more source
Advanced Materials, EarlyView.Mechanically origami‐coded 3D kirigami photovoltaics convert a single extension–release cycle into deterministic self‐folding, reconfiguring planar solar cells into programmable 3D modules. Distinct coding strategies enable either ultrahigh stretchability (500% system strain) or ultrahigh initial effective areal coverage (225%).
Seok Joon Hwang +15 more
wiley +1 more source