Results 101 to 110 of about 8,069 (285)

Explainable, Uncertainty‐Aware Machine Learning for Maize Land Suitability and Climate Resilience in Lorestan Province, Western Iran

Land Degradation &Development, EarlyView.
ABSTRACT Maize (Zea mays L.) is strategically important in Iran, yet its cultivation in the semi‐arid Zagros is constrained by limited and variable water, heat stress and heterogeneous soils, while conventional suitability assessments are deterministic, rarely validated spatially and provide no measure of confidence.
Ahad Madani, Narges Shafaei Bajestani
wiley   +1 more source

Kalibrasi Estimasi Curah Hujan CHIRPS dengan Data Observasi di Semarang [PDF]

Precipitation is a crucial component of weather and climate, playing a fundamental role in the Earth's water cycle. However, in situ, rain gauge networks are still limited in their ability to comprehensively monitor precipitation across all regions ...
Ismail, Prayoga, Jatmiko, Retnadi Heru
core   +1 more source

Parallel Multi‐Target Detection for Quantum LiDAR

Laser &Photonics Reviews, EarlyView.
Parallel multi‐target detection is achieved in quantum LiDAR with a single‐pixel quantum readout. Direction and distance information are extracted together, allowing multiple objects to be distinguished under noisy low‐light conditions and pointing to a new strategy for scan‐free quantum remote sensing.
Junyeop Kim, Dongjin Lee, Woncheol Shin, Yeoulheon Seong, Heedeuk Shin   +4 more
wiley   +1 more source

Visible Octave Frequency Combs in Silicon Nitride Nanophotonic Waveguides Driven by Ti:Sapphire Lasers

Laser &Photonics Reviews, EarlyView.
Chip‐based frequency combs are usually pumped from telecom wavelengths, far from the visible. This work instead pumps close to the visible with a Ti:sapphire laser ‐ the source behind the original optical frequency combs and now becoming chip‐integrable‐ and lets silicon‐nitride waveguides convert it into efficient, octave‐spanning visible‐to‐infrared ...
Abdullah Alabbadi, Ewan Allan, Hanna Ostapenko, Pablo Castro‐Marín, Derryck T. Reid, Pascal Del'Haye   +5 more
wiley   +1 more source

Evaluation of Chirps Tropical Rainfall Estimates Using Automatic Weather Stations for Validation in West Sumatra, Indonesia

Civil and Environmental Engineering
The availability of accurate and evenly distributed rainfall data is still a significant challenge in managing water resources in West Sumatra.
Nurhamidah Nurhamidah, Muthmainnah Tiara Assyifa, Aljauhari Alfina Mursida, Junaidi Ahmad, Adnan Nor Aizam, Andari Rafika   +5 more
doaj   +1 more source

EVALUATION OF CHIRPS AND GPM-IMERG PRECIPITATION ESTIMATES AGAINST GROUND RAIN GAUGE OBSERVATIONS OVER LEBANON [PDF]

, 2021
Dr. Hadi Jaafar Dr. Mustapha Haidar Dr. Samer KharroubiThe objective of this paper is to assess two satellite precipitation products, Climate Hazards Center’s Infrared Precipitation with Stations (CHIRPS) and the product of the Global Precipitation ...
Sleiman Haidar, Aleel
core  

Noise Suppression via Gain‐Dispersion‐Managed Nonlinear Amplification in a High‐Power Er‐Fiber Laser

Laser &Photonics Reviews, EarlyView.
Gain‐dispersion‐managed nonlinear pre‐amplification simultaneously suppresses phase and intensity noise, enabling scalable high‐power fiber amplification. The system delivers 102.3 W linearly polarized pulses with 1.19 µJ energy at 85.69 MHz and compresses them to 380 fs. Near‐linear power scaling without evident saturation highlights a practical route
Mei Yang, Yuan Chen, Tingting Liu, Zhuoren Wan, Yan Dai, Suyang Xu, Zhengru Guo, Kun Huang, Ming Yan, Heping Zeng   +9 more
wiley   +1 more source

Interplay of the Chirps and Chirped Pulse Compression in a High-gain Seeded Free-electron Laser [PDF]

, 2007
In a seeded high-gain Free-electron Laser (FEL), where a coherent laser pulse interacts with an ultra-relativistic electron beam, the seed laser pulse can be frequency chirped, and the electron beam can be energy chirped.
Paul J. Emma, James B. Murphy, Juhao Wu, Watanabe, T., Takahiro Watanabe, Xinming Zhong, Wu, Juhao, Murphy, J. B., Emma, P. J., Xijie Wang, Wang, X. J.   +10 more
core   +1 more source

Attosecond‐Stable Two‐Dimensional Spectroscopy by a Sagnac‐Based Modulating System and a Sub‐4‐fs Continuum Source

Laser &Photonics Reviews, EarlyView.
A novel optical platform integrates a Sagnac‐based interferometer with a high‐brightness multiple‐plate continuum source to advance two‐dimensional electronic spectroscopy. The robust system delivers octave‐spanning, 3.7‐femtosecond pulses and achieves intrinsic attosecond‐level phase stability without active feedback.
Wei‐Chung Feng, Bo‐Han Chen, Chih‐Hsuan Lu, Howe‐Siang Tan, Shang‐Da Yang, Kai Chen   +5 more
wiley   +1 more source

Simultaneous ToF/FMCW LiDAR Using a Dual‐Mode Light Source in a Single Architecture

Laser &Photonics Reviews, EarlyView.
A simultaneous ToF/FMCW LiDAR architecture is demonstrated using a dual‐mode light source that alternately generates optical pulses and frequency‐chirped light within a single acquisition. By combining time‐domain ToF and coherent FMCW ranging, the system achieves high‐resolution ranging and velocity sensing while extending the measurable range beyond ...
Gyeongmin Kweon, Wontae Choe, Sang Min Park, Chang‐Seok Kim, Gyeong Hun Kim, Hwidon Lee   +5 more
wiley   +1 more source