Results 51 to 60 of about 1,143,033 (294)

Machine learning-based spectral and spatial analysis of hyper- and multi-spectral leaf images for Dutch elm disease detection and resistance screening

Artificial Intelligence in Agriculture, 2023
Diseases caused by invasive pathogens are an increasing threat to forest health, and early and accurate disease detection is essential for timely and precision forest management.
Xing Wei, Jinnuo Zhang, Anna O. Conrad, Charles E. Flower, Cornelia C. Pinchot, Nancy Hayes-Plazolles, Ziling Chen, Zhihang Song, Songlin Fei, Jian Jin   +9 more
doaj   +1 more source

Properties of ultra-cool dwarfs with Gaia. An assessment of the accuracy for the temperature determination

, 2012
We aimed to assess the accuracy of the Gaia teff and logg estimates as derived with current models and observations. We assessed the validity of several inference techniques for deriving the physical parameters of ultra-cool dwarf stars.
Barrado, David, Berihuete, Angel, Carrion, Cesar, Cruz, Patricia, Isasi, Yago, Sarro, Luis M.   +5 more
core   +1 more source

Extremely hard GRB spectra prune down the forest of emission models [PDF]

, 2002
We consider the evidence for very hard low energy spectra during the prompt phase of Gamma-Ray Bursts (GRB). In particular we examine the spectral evolution of GRB 980306 together with the detailed analysis of some other bursts already presented in the ...
A. Celotti, Amati, Band, Blinnikov, Borgonovo, Brainerd, Brainerd, Böttcher, Crider, Crider, Daigne, Dermer, Drenkhahn, Drenkhahn, Ford, Frontera, G. Ghirlanda, G. Ghisellini, Ghirlanda, Ghisellini, Ghisellini, Ghisellini, Granot, Katz, Lazzati, Liang, Liang, Lloyd, Lloyd, Mészáros, Paczynski, Panaitescu, Papathanassiou, Preece, Preece, Preece, Preece, Preece, Rees, Ruffini, Ryde, Ryde, Smith, Tavani, Zhang   +44 more
core   +2 more sources

Therapeutic Apheresis for Intravenous Methylprednisolone‐Refractory Neuromyelitis Optica Spectrum Disorder: Clinical and Radiological Outcomes in a Single‐Center Case Series

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi, Daisuke Katagiri, Takeyuki Watadani, Shunichi Matsuda, Hiroshi Kaneko, Noritoshi Arai   +5 more
wiley   +1 more source

Autoregressive models of singular spectral matrices

Automatica, 2012
This paper deals with autoregressive (AR) models of singular spectra, whose corresponding transfer function matrices can be expressed in a stable AR matrix fraction description [Formula: see text] with [Formula: see text] a tall constant matrix of full column rank and with the determinantal zeros of [Formula: see text] all stable, i.e. in [Formula: see
Anderson, Brian, Deistler, Manfred, Chen, Weitian, Filler, Alexander   +3 more
openaire   +4 more sources

Infection Control Practices for Vascular Access Management in Hemodialysis: Results From a Nationwide Survey of Japanese National University Hospitals

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada, Makoto Harada, Tadahiko Kikugawa, Takeshi Nakata, Koji Hashimoto, Tsuneo Konta, Yuji Kamijo   +6 more
wiley   +1 more source

Variety Identification of Single Rice Seed Using Hyperspectral Imaging Combined with Convolutional Neural Network

Applied Sciences, 2018
The feasibility of using hyperspectral imaging with convolutional neural network (CNN) to identify rice seed varieties was studied. Hyperspectral images of 4 rice seed varieties at two different spectral ranges (380–1030 nm and 874–1734 nm) were acquired.
Zhengjun Qiu, Jian Chen, Yiying Zhao, Susu Zhu, Yong He, Chu Zhang   +5 more
doaj   +1 more source

Potential Importance of Binary Evolution in UV-Optical Spectral Fitting of Early-Type Galaxies

, 2013
Binaries are very common in galaxies, and more than half of Galactic hot subdwarf stars, which are thought as a possible origin of UV-upturn of old stellar populations, are found in binaries.
Chen, Li, Li, Maocai, Li, Zhongmu, Mao, Caiyan, Zhang, Qian   +4 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Narain transform for spectral deformations of random matrix models

Nuclear Physics B, 2020
We start from applying the general idea of spectral projection (suggested by Olshanski and Borodin and advocated by Tao) to the complex Wishart model. Combining the ideas of spectral projection with the insights from quantum mechanics, we derive in an ...
M.A. Nowak, W. Tarnowski
doaj   +1 more source