Results 1 to 10 of about 1,655,293 (161)

Effects of CT-RED calibration curves of different simulators on dose distribution of tumor target and organs at risk [PDF]

open access: yesZhongguo aizheng zazhi, 2021
Background and purpose: The precise radiotherapy of tumor site depends on the precise dose distribution of the therapeutic target. The purpose of this study was to explore the influence of different computed tomography value to the relative electron ...
杨彦举   +4 more
doaj   +2 more sources

Density Peak Clustering Algorithm Based on Relative Density [PDF]

open access: yesJisuanji gongcheng, 2023
When the density peak clustering algorithm deals with datasets with uneven density,it is easy to divide the low-density clusters into high-density clusters,divide the high-density clusters into multiple sub-clusters,and exists the error propagation ...
WEI Ya, ZHANG Zhengjun, HE Kailin, TANG Li
doaj   +1 more source

Density Peaks Clustering Combining Relative Local Density and Nearest Neighbor Relationship [PDF]

open access: yesJisuanji kexue yu tansuo, 2023
When the density peaks algorithm deals with datasets with different densities, the wrong center points may be selected, and the problem of associated errors may occur in the sample allocation process.
WANG Weina, ZHU Yu, REN Yan
doaj   +1 more source

Density Peak Clustering Based on Relative Density under Progressive Allocation Strategy

open access: yesMathematical and Computational Applications, 2022
In traditional density peak clustering, when the density distribution of samples in a dataset is uneven, the density peak points are often concentrated in the region with dense sample distribution, which is easy to affect clustering accuracy.
Yongli Liu, Congcong Zhao, Hao Chao
doaj   +1 more source

Information Density and the Extraposition of German Relative Clauses

open access: yesFrontiers in Psychology, 2021
This paper aims to find a correlation between Information Density (ID) and extraposition of Relative Clauses (RC) in Early New High German. Since surprisal is connected to perceiving difficulties, the impact on the working memory is lower for frequent ...
Sophia Voigtmann   +3 more
doaj   +1 more source

RELATIONSHIP BETWEEN INTERNAL MORPHOLOGY AND PHYSIOLOGICAL QUALITY OF Leucaena leucocephala SEEDS USING IMAGE ANALYSIS [PDF]

open access: yesRevista Árvore, 2019
The use of new methodological approaches and inclusion of non-destructive evaluations in determining the quality of forest seeds has proven to be of great importance for the development of forest production.
André Dantas de Medeiros   +5 more
doaj   +1 more source

Gaseous density calculation by means of relative permittivity measurement

open access: yesMeasurement: Sensors, 2021
This study presents a gaseous density calculation method on the basis of relative permittivity measurement. The relative permittivity of a gas sample is measured by using a cylindrical microwave cavity resonator in wide temperature and pressure ranges ...
Yuya Kano, Naoki Kuramoto
doaj   +1 more source

Spudcan Deep Penetration in Multi-Layered Soils Incorporating Sand Relative Density

open access: yesJournal of Marine Science and Engineering, 2022
Installing a spudcan jack-up rig in sediments with an interbedded sand-over-clay soil profile is still challenging in the offshore industry due to possible punch-through failure.
Jun Zhao   +4 more
doaj   +1 more source

Fabrication of large size and high relative density tungsten tube

open access: yesFenmo yejin jishu, 2021
The tungsten tube products with the large size and high relative density have the important application in the quartz smelting industry. To overcome the problems of cracking and low relative density in the preparation process of the large size tungsten ...
WANG Guang-da   +4 more
doaj   +1 more source

Characteristics of the bat (Chiroptera) population in Protected Areas in the northern and middle taiga subzones of European Russia

open access: yesNature Conservation Research: Заповедная наука, 2021
The overall bat (Chiroptera) fauna of Protected Areas in the forest zone of European Russia has not yet been assessed, although papers on some Protected Areas are being published quite regularly.
Vladimir V. Belkin   +3 more
doaj   +1 more source

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