Results 21 to 30 of about 128,608 (313)

DCIFPN: Deformable cross‐scale interaction feature pyramid network for object detection

open access: yesIET Image Processing, 2023
Exploiting multi‐scale features is one of the most effective methods to recognize objects of different scales in object detection. Since image pyramid is time‐consuming, Feature Pyramid Network (FPN) becomes the most popular component used for obtaining ...
Junrui Xiao   +3 more
doaj   +1 more source

Sensing systems for precision agriculture in Florida

open access: yesComputers and Electronics in Agriculture, 2015
Many sensing systems were developed for use in precision agriculture in Florida.Examples include fruit recognition and disease detection platforms.A summary of past efforts is presented.Applications of different sensing systems and future directions are discussed. Many sensing systems have been developed for use in precision agriculture in Florida over
Won Suk, Lee, Lee, Won Suk, Ehsani, Reza
openaire   +2 more sources

Applications of Remote Sensing in Precision Agriculture: A Review [PDF]

open access: yesRemote Sensing, 2020
Agriculture provides for the most basic needs of humankind: food and fiber. The introduction of new farming techniques in the past century (e.g., during the Green Revolution) has helped agriculture keep pace with growing demands for food and other agricultural products.
Rajendra P. Sishodia   +2 more
openaire   +2 more sources

Search for Dark Matter Using Levitated Nanoparticles Within a Bessel–Gaussian Beam via Yukawa Coupling

open access: yesSensors
We present a novel experimental approach to detect dark matter by probing Yukawa interactions, commonly referred to as a fifth force, between dark matter and baryonic matter. Our method involves optically levitating nanoparticles within a Bessel–Gaussian
Iftekher S. Chowdhury   +4 more
doaj   +1 more source

Second-harmonic generation within a random fiber laser

open access: yesHigh Power Laser Science and Engineering
Optical fibers offer convenient access to a variety of nonlinear phenomena. However, due to their inversion symmetry, second-order nonlinear effects, such as second-harmonic generation (SHG), are challenging to achieve.
Yousi Yang   +8 more
doaj   +1 more source

A New Non-invasive Technique for Measuring 3D-Oxygen Gradients in Wells During Mammalian Cell Culture

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
Oxygen tension plays an important role in overall cell function and fate, regulating gene expression, and cell differentiation. Although there is extensive literature available that supports the previous statement, little information is to be found about
Carlos J. Peniche Silva   +5 more
doaj   +1 more source

High-Power Laser Coherent Beam Combination Through Self-Imaging in Plasma Waveguides

open access: yesApplied Sciences
A novel approach for laser coherent beam combination (CBC) utilizing the self-imaging effect in plasma waveguides is presented in this study, which enables the transmission of ultrashort laser pulses at intensities above the bulk damage threshold of ...
Yixuan Huang   +6 more
doaj   +1 more source

Quantum-memory-assisted precision rotation sensing [PDF]

open access: yesPhysical Review A, 2020
We propose to implement a solid-state rotation sensor by employing a many-body quantum spin system which takes the advantages of the easy controllability of the electron spin and the robustness provided by the collective nuclear spin state. The sensor consists of a central electron spin coupled to many surrounding nuclear spins.
Wenkui Ding   +2 more
openaire   +2 more sources

A 301 W narrow-linewidth in-band pumped Er:Yb co-doped fiber amplifier at 1585 nm and related modeling for dynamics study and optimization

open access: yesHigh Power Laser Science and Engineering
To overcome Yb lasing, a kilowatt-level 1535 nm fiber laser is utilized to in-band pump an Er:Yb co-doped fiber (EYDF) amplifier. The output power of a 301 W narrow-linewidth EYDF amplifier operating at 1585 nm, with 3 dB bandwidth of 150 pm and ${M}^
Guohao Fu   +7 more
doaj   +1 more source

Geosensors to Support Crop Production: Current Applications and User Requirements

open access: yes, 2011
Sensor technology, which benefits from high temporal measuring resolution, real-time data transfer and high spatial resolution of sensor data that shows in-field variations, has the potential to provide added value for crop production.
Arnold Bregt   +16 more
core   +1 more source

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