Results 21 to 30 of about 142,383 (260)

A comprehensive study of a similarity criterion in cardiac computerized tomography images enhancement

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2020
This research focuses on the study of a particular filter based on a similarity criterion that has been applied to improve the information contained in images acquired using different cardiac imaging modalities. The primary attention of this study is to
Antonio José Bravo Valero   +3 more
doaj   +1 more source

Presentation of an effective method of text recognition in the image, based on the criteria of similarity of structural models of symbols similarity criteria

open access: yesAdaptivni Sistemi Avtomatičnogo Upravlinnâ, 2021
The object of research is the methods of handwriting recognition. The article reviews the basic principles of optical recognition. The aim of the work is to present an algorithm for text recognition in the image, which has high accuracy with a small ...
О. Польшакова   +1 more
doaj   +1 more source

The analytical dependence of the resistance force to digging with a bulldozer blade on the main influencing factors [PDF]

open access: yesE3S Web of Conferences, 2023
The criteria for the similarity of the process of digging soil with a bulldozer blade are determined based on the use of the principles of the theory of similarity and modeling. When determining the similarity criteria, a rheological model of the process
Khankelov T.K.   +2 more
doaj   +1 more source

Numerical Simulation of Dynamic Pressure Change in Transport Aircraft Cabin with Airdrop

open access: yesHangkong gongcheng jinzhan, 2021
When heavy equipment are airdropped, the cabin cross-section is largely blocked, and rapid moving of heavy equipment will cause drastic changes in cabin pressure and even damage the health of cabin crew.Therefore, it is necessary to carry out numerical ...
LIU Weibing, JIAO Yuqin, ZOU Hongyi
doaj   +1 more source

Numerical Analysis of High-Altitude Inlet Air on Boundary Layer Flow Loss in an Aero-Engine Compressor

open access: yesEnergies, 2020
A numerical analysis is performed to explore the high altitude and high Mach flight on the effect of wall boundary layer loss in the compressor. The accuracy for solution results by the application of the similarity criterion and parameter definition of ...
Feng Wu   +4 more
doaj   +1 more source

DEVELOPMENT OF CRITERIA OF CHARGE AND DISCHARGE EFFICIENCY OF SOLID STATE OF HEAT ACCUMULATOR

open access: yesNauka ta progres transportu, 2014
Purpose. Development of similarity criteria for different modes of operation of the solid-state heat accumulator working due to accumulation of heat in the volume of the heat storage material without phase transition, and the creation of systematic ...
S. S. Belymenko, V. O. Ishchenko
doaj   +1 more source

Examining the interrelation behavior of distance metrics for head-related transfer function evaluation: a case study

open access: yesActa Acustica, 2023
The comparison of head-related transfer functions (HRTFs), e.g., for validating different acquisition methods, requires a meaningful way of quantifying HRTF differences – a problem to which literature offers no standardized approach.
Doma Shaima’a   +2 more
doaj   +1 more source

Research on Simulation Method of Propeller Power in the Model Free-flight Test

open access: yesHangkong gongcheng jinzhan, 2020
It is necessary to simulate effects of propeller power accurately, when the stall performance of propeller aircraft is simulated by scaled free-flight test.
ZHANG Jiaqi, XI Liangliang, WEN Qing
doaj   +1 more source

Experimental Research on the Similarity of Rime Icing on a Cylinder Rotating around Its Horizontal Axis

open access: yesInternational Journal of Rotating Machinery, 2021
Ice accumulation on the blade of a wind turbine surface seriously threatens the operational safety of the turbine; therefore, the research on this problem is very important.
Lei Shi, Yan Li, Wenfeng Guo, Ce Sun
doaj   +1 more source

Analysis of the Relevant Parameters on Small Scale of Navigable Abnormal Ship Model

open access: yesPolish Maritime Research, 2017
At present, ship model tests are based on the normal mode at home and abroad. With the development and application of abnormal hydraulic model, it is necessary to study abnormal ship model.
Chuang Cai, Penghua Lei, Xinyong Cai
doaj   +1 more source

Home - About - Disclaimer - Privacy