Results 11 to 20 of about 984,019 (267)

Scales in Space

open access: yesIntegrated Assessment, 2002
Economists have devoted more attention to the scale of time than to the scale of space. What has been done in the field of space is often general and abstract, not connected to an explicit observation set in time and space. Moreover, time scales and spatial scales are not tied, making the choice for a macro, meso or microeconomic theory a rather ...
van der Veen, Anne, Otter, Henriëtte S.
openaire   +2 more sources

Scaling context space [PDF]

open access: yesProceedings of the 40th Annual Meeting on Association for Computational Linguistics - ACL '02, 2001
Context is used in many NLP systems as an indicator of a term's syntactic and semantic function. The accuracy of the system is dependent on the quality and quantity of contextual information available to describe each term. However, the quantity variable is no longer fixed by limited corpus resources.
James R. Curran, Marc Moens
openaire   +1 more source

Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO2 Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder

open access: yesMolecules, 2021
In this work, spherical flower-shaped composite carbonyl iron powder@MnO2 (CIP@MnO2) with CIP as the core and ultrathin MnO2 nanosheets as the shell was successfully prepared by a simple redox reaction to improve oxidation resistance and electromagnetic ...
Zhengwei Qu   +12 more
doaj   +1 more source

Global Distribution of Persistence of Total Electron Content Anomaly

open access: yesAtmosphere, 2019
To better understand the ionospheric morphology response to lithospheric activities, we study the global location preference of the positive and negative total electron content (TEC) anomalies persisting continuously for longer than 24 h at middle and ...
Yang-Yi Sun   +3 more
doaj   +1 more source

Scale space Radon transform

open access: yesIET Image Processing, 2021
An extension of Radon transform by using a measure function capturing the user need is proposed. The new transform, called scale space Radon transform, is devoted to the case where the embedded shape in the image is not filiform.
Djemel Ziou   +2 more
doaj   +1 more source

Volcanism and Deep Structures of the Moon

open access: yesSpace: Science & Technology, 2023
Volcanism is the most important endogenic geological process of the Moon, which is closely related to its internal structure and thermal history. Lunar volcanism is one of the most important topics for lunar science and explorations. Recent lunar orbital
Jiannan Zhao   +8 more
doaj   +1 more source

Partial Block Scheme and Adaptive Update Model for Kernelized Correlation Filters-Based Object Tracking

open access: yesApplied Sciences, 2018
In visual object tracking, the dynamic environment is a challenging issue. Partial occlusion and scale variation are typical challenging problems. We present a correlation-based object tracking based on the discriminative model.
Soowoong Jeong, Joonki Paik
doaj   +1 more source

Considerations and Framework for Foveated Imaging Systems †

open access: yesPhotonics, 2018
Foveated sight as observed in some raptor eyes is a motivation for artificial imaging systems requiring both wide fields of view as well as specific embedded regions of higher resolution.
Ram M. Narayanan   +3 more
doaj   +1 more source

Three-Dimensional Ultrasonic Reverse-Time Migration Imaging of Submarine Pipeline Nondestructive Testing in Cylindrical Coordinates

open access: yesJournal of Marine Science and Engineering, 2023
Submarine pipelines are a safe and energy-efficient mode of gas transport. However, due to the complex manufacturing process and harsh operating environment, submarine pipelines are subject to fatigue cracks under long-term cyclic loading.
Daicheng Peng   +5 more
doaj   +1 more source

Inverse scale space decomposition

open access: yesInverse Problems, 2018
36 pages, 5 figures, submitted to Inverse ...
Marie Foged Schmidt   +2 more
openaire   +4 more sources

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