Results 121 to 130 of about 32,795 (346)

Kinematic Absolute Positioning with Quad-Constellation GNSS [PDF]

open access: yes, 2019
The absolute positioning technique is based on a point positioning mode with a single Global Navigation Satellite System (GNSS) receiver, which has been widely used in many fields such as vehicle navigation and kinematic surveying.
Cai, Changsheng   +3 more
core   +2 more sources

Biomimetic Membrane Interface Technologies for Detection and Isolation of CTCs and EVs: Advances and Opportunities in Liquid Biopsy

open access: yesAdvanced Science, EarlyView.
Biomimetic membrane interface engineering constructs functionalized detection platforms by integrating natural cell membranes, synthetic lipids, or hybrid membranes. This strategy effectively reduces background interference and enables efficient target capture and analysis, showing broad applications in circulating tumor cell separation, extracellular ...
Duo Liu   +8 more
wiley   +1 more source

Revisit the calibration errors on experimental slant total electron content (TEC) determined with GPS [PDF]

open access: yes, 2018
This is a pre-print of an article published in GPS Solutions. The final authenticated version is available online at: https://doi.org/10.1007/s10291-018-0753-7.
Chen, Wu   +7 more
core   +2 more sources

Systematic Metabolic Engineering and Model‐Guided Optimization for High‐Level Production of L‐Theanine From Xylose in Escherichia Coli

open access: yesAdvanced Science, EarlyView.
This study is pioneering in constructing the shortest known synthetic pathway for L‐theanine production from xylose within E coli. Through comprehensive metabolic engineering strategies, our engineered strain achieved the highest reported L‐theanine titer from xylose, with a titer of 95.42 g/L, and a yield of 0.55 g/g.
Haolin Han   +5 more
wiley   +1 more source

Tightly Coupled Integration of Ionosphere-Constrained Precise Point Positioning and Inertial Navigation Systems

open access: yesSensors, 2015
The continuity and reliability of precise GNSS positioning can be seriously limited by severe user observation environments. The Inertial Navigation System (INS) can overcome such drawbacks, but its performance is clearly restricted by INS sensor errors ...
Zhouzheng Gao   +6 more
doaj   +1 more source

Satellite Navigation for the Age of Autonomy

open access: yes, 2020
Global Navigation Satellite Systems (GNSS) brought navigation to the masses. Coupled with smartphones, the blue dot in the palm of our hands has forever changed the way we interact with the world.
Chan, Bryan   +8 more
core   +1 more source

Precise Tailoring of Charge Transport Characteristics in Zr and Hf Doped Indium Tin Oxide Thin Film Transistors

open access: yesAdvanced Electronic Materials, EarlyView.
Zirconium, hafnium, and mixed zirconium/hafnium doped indium tin oxide thin films are accessible by atomic layer deposition. The amorphous functional films are about 8 nm thick and show a high interdiffusion of all elements. Their transistor characteristics can be modulated depending on the amount of Zr and Hf oxide phases incorporated in these thin ...
Marie Isabelle Büschges   +5 more
wiley   +1 more source

In-Orbit Demonstration of Precise Point Positioning for Real-Time On-Board High-Accuracy Orbit Estimation of LEO Satellites [PDF]

open access: yes, 2023
Satellites in Low Earth Orbit (LEO) are typically equipped with GNSS (Global Navigation Satellite Systems) receivers to obtain real-time positioning, velocity, and timing. Until now, onboard GNSS positioning accuracy in LEO has been limited.
Bartle, James   +5 more
core   +1 more source

Accuracy of GPS precise point positioning (PPP)

open access: yes, 2020
We tried to show how the accuracy of GPS varies with respect to observing sessionduration by using the method of GIPSY precise point positioning (PPP), and how the site?scoordinates latitude, longitude and ellipsoidal height are affected.We used eleven IGS sites scattered almost evenly across the earth. GPS data wereobtained from SOPAC archives at http:
openaire   +1 more source

European Ports as Energy Hubs: A Sustainability Index to Assess Territorial Development

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The capacity of ports to act as energy hubs is increasingly relevant in light of sustainability challenges and global crises like the Ukraine conflict, the COVID‐19 pandemic and energy scarcity. Numerous international and national initiatives are shaping the future of port development to address environmental and economic concerns.
Paolo Mazzocchi   +3 more
wiley   +1 more source

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