Results 31 to 40 of about 15,274 (262)

A Hybrid Indoor Positioning System Based on Visible Light Communication and Bluetooth RSS Trilateration

open access: yesSensors, 2023
Indoor positioning has become an attractive research topic because of the drawbacks of the global navigation satellite system (GNSS), which cannot detect accurate locations within indoor areas.
Lamya Albraheem, Sarah Alawad
doaj   +1 more source

Determining design criteria for indoor positioning system projects in hospitals: A design science approach

open access: yesDigital Health
Objectives Indoor navigation systems (indoor positioning systems) can improve orientation for patients in hospitals and help employees to track assets. Many hospitals would like to implement indoor positioning systems but do not know how. To support them
Johannes Wichmann   +4 more
doaj   +1 more source

A Precise Indoor Visual Positioning Approach Using a Built Image Feature Database and Single User Image from Smartphone Cameras

open access: yesRemote Sensing, 2020
Indoor visual positioning is a key technology in a variety of indoor location services and applications. The particular spatial structures and environments of indoor spaces is a challenging scene for visual positioning.
Ming Li   +5 more
doaj   +1 more source

Hybrid indoor location positioning system [PDF]

open access: yesIET Wireless Sensor Systems, 2018
Indoor location positioning techniques have experienced a significant growth in recent years. This work presents a hybrid indoor positioning system with fine and coarse modes. It utilises acoustic signals for fine positioning and received signal strength (RSS) for coarse location estimation.
Shuo Li, Rashid Rashidzadeh
openaire   +2 more sources

Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture

open access: yesAdvanced Functional Materials, EarlyView.
This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li   +12 more
wiley   +1 more source

A Novel Three-Dimensional Algorithm Based on Practical Indoor Visible Light Positioning

open access: yesIEEE Photonics Journal, 2019
With the increased demand of multiple information, positioning technology raises lots of attention in many fields, including military, emergency assistance, and tracking for vehicles.
H.-X. Zhao, J.-T. Wang
doaj   +1 more source

Roll‐to‐Roll Processable EC/TC Hybrid Smart Windows Driven by a Bidirectional Dual‐Chromic Polymer Electrolyte

open access: yesAdvanced Functional Materials, EarlyView.
We present a scalable EC/TC hybrid smart window using a DCPE that enables tunable solar modulation (ΔTsol:15–43%), fast electrochromic switching (<90 s), and strong thermal blocking (10–14°C reduction). HPMC improves thermal stability, while an optimized ISL enhances EC performance.
Soyeon Kim   +4 more
wiley   +1 more source

A High-Accuracy Indoor-Positioning Method with Automated RGB-D Image Database Construction

open access: yesRemote 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

Tag Positioning Method Based on RFID Coverage and Scanning [PDF]

open access: yesJisuanji 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

High Light Utilization and Color Rendering in Vacuum‐Deposited Semitransparent Perovskite Solar Cells

open access: yesAdvanced 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

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