Results 11 to 20 of about 5,388,952 (345)

Resolving Scale Ambiguity Via XSlit Aspect Ratio Analysis [PDF]

open access: green, 2015
In perspective cameras, images of a frontal-parallel 3D object preserve its aspect ratio invariant to its depth. Such an invariance is useful in photography but is unique to perspective projection.
Wei Yang   +3 more
openalex   +3 more sources

The diagnostic value of the ultrasound gray scale ratio for different sizes of thyroid nodules [PDF]

open access: yesCancer Medicine, 2019
At present, hypoechogenicity, as one of the clinically relevant features associated with suspicion of malignant thyroid disease, is affected by the variability of modules and the experience of sonographers, thus leading to unsatisfying results.
Xiaoyu Chen   +5 more
doaj   +2 more sources

Interacting factors of strain ratio values in fibroadenomas and the contribution of color scale

open access: diamondJournal of Medical Ultrasound, 2020
Background: The purpose of this retrospective study is to investigate the association of qualitative and semiquantitative strain elastography (SE) features with factors such as lesion size, skin-to-lesion distance, and patient's age in fibroadenomas and ...
Gulten Sezgin   +5 more
doaj   +2 more sources

Ratio scales of acid sourness [PDF]

open access: bronzePerception & Psychophysics, 1971
Experiments were conducted to assess the relation between concentration, or pH, and the perceived sourness of 24 acids. The psychophysical functions for sourness conform to the power relation S = kCn which relates sensory intensity, S, to physical concentration, C.
Howard Moskowitz
openaire   +3 more sources

Effects of Reynolds number and scale ratio on VIV tests for railway blunt box girders [PDF]

open access: yesScientific Reports
Blunt steel box girder as a form of main girder used in large-span railway bridges, the vortex-induced vibrations (VIVs) phenomenon is significant.
Damei Tuo   +3 more
doaj   +2 more sources

C-Reactive Protein, International Normalized Ratio, and Fibrinogen in Diagnostic Scale of Complicated Acute Appendicitis [PDF]

open access: goldClinics and Practice
Background/Objectives: Differentiating complicated acute appendicitis (CA) and uncomplicated acute appendicitis (UC) is essential to guide clinical management.
Leticia Lorena Hernández-González   +8 more
doaj   +2 more sources

Mitotic chromosomes scale to nuclear-cytoplasmic ratio and cell size in Xenopus

open access: yeseLife, 2023
During the rapid and reductive cleavage divisions of early embryogenesis, subcellular structures such as the nucleus and mitotic spindle scale to decreasing cell size.
Coral Y Zhou   +6 more
doaj   +1 more source

Determining drivers of phytoplankton carbon to chlorophyll ratio at Atlantic Basin scale

open access: yesFrontiers in Marine Science, 2023
We demonstrate the ability of flow cytometry to determine species specific cellular carbon and chlorophyll content in vivo by using laboratory cultures of phytoplankton encompassing a wide range of cell sizes.
Timothy Smyth   +6 more
doaj   +1 more source

Sequential Probabilistic Ratio Test for the Scale Parameter of the P-Norm Distribution

open access: yesDiscrete Dynamics in Nature and Society, 2021
We consider a series of independent observations from a P-norm distribution with the position parameter μ and the scale parameter σ. We test the simple hypothesis H0:σ=σ1 versus H1: σ=σ2.
Huan Ren, Hongchang Hu, Zhen Zeng
doaj   +1 more source

Performance Ratio Analysis Based on Energy Production for Large-Scale Solar Plant

open access: yesIEEE Access, 2022
This paper presents an industrial approach to assess the performance of large-scale solar plants (LSSPs) has been developed using a novel performance ratio (PR) formula model based on energy production.
Irfan Jamil   +5 more
doaj   +1 more source

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