Results 11 to 20 of about 23,350,298 (259)

Proportional-Integral-Plus Control Strategy of an Intelligent Excavator [PDF]

open access: yes, 2004
This article considers the application of Proportional-Integral-Plus (PIP) control to the Lancaster University Computerised Intelligent Excavator (LUCIE), which is being developed to dig foundation trenches on a building site.
Jun Gu   +5 more
core   +5 more sources

A Biased Proportional-Integral-Derivative-Incorporated Latent Factor Analysis Model

open access: yesApplied Sciences, 2021
Nowadays, as the number of items is increasing and the number of items that users have access to is limited, user-item preference matrices in recommendation systems are always sparse. This leads to a data sparsity problem. The latent factor analysis (LFA)
Jialu Sui, Jian Yin
doaj   +1 more source

COX PROPORTIONAL HAZARD REGRESSION SURVIVAL ANALYSIS FOR TYPE 2 DIABETES MELITUS

open access: yesBarekeng, 2022
One of the most widely used methods of survival analysis is Cox proportional hazard regression. It is a semiparametric regression used to investigate the effects of a number of variables on the dependent variable based on survival time.
Umi Mahmudah   +4 more
doaj   +1 more source

Two-tier proportional electoral system in Ukraine:cross-regional analysis of the first approbation

open access: yesПолітичні дослідження, 2021
The article examines some effects from the first approbation of a two-tier proportional system with „flexible” lists in the local elections in Ukraine in 2020.
Oleksandr Fisun, Anton Avksentiev
doaj   +1 more source

Analysis of proportional valve flow field in common rail system

open access: yesThe Journal of Engineering, 2020
A certain type of proportional valve has been optimised in design by adding a damping hole in its structure, which solves the problem of pressure rise in the fuel chamber due to gap leakage when closing.
Li Yazhou   +6 more
doaj   +1 more source

A General Method for Drawing Area-Proportional Euler Diagrams [PDF]

open access: yes, 2011
Area-proportional Euler diagrams have many applications, for example they are often used for visualizing data in medical and biological domains. There have been a number of recent research efforts to automatically draw Euler diagrams when the areas of ...
Howse, John   +5 more
core   +1 more source

eulerAPE: Drawing Area-proportional 3-Venn Diagrams Using Ellipses [PDF]

open access: yes, 2014
Venn diagrams with three curves are used extensively in various medical and scientific disciplines to visualize relationships between data sets and facilitate data analysis.
Luana Micallef   +5 more
core   +1 more source

Drawing Area-Proportional Venn-3 Diagrams with Convex Polygons [PDF]

open access: yes, 2010
Area-proportional Venn diagrams are a popular way of visualizing the relationships between data sets, where the set intersections have a specified numerical value. In these diagrams, the areas of the regions are in proportion to the given values. Venn-3,
Howse, John   +7 more
core   +1 more source

The simulation analysis for cartridge proportional flow valve

open access: yesMATEC Web of Conferences, 2016
Mechanical and electrical integration is an important direction for future development of the industry. There are many products in hydraulic filed. By connecting electrical and mechanical, we can obtain more precise displacement, velocity and force of ...
Dong Peng   +3 more
doaj   +1 more source

Generating Survival Times to Simulate Cox Proportional Hazards Models [PDF]

open access: yes, 2003
This paper discusses techniques to generate survival times for simulation studies regarding Cox proportional hazards models. In linear regression models, the response variable is directly connected with the considered covariates, the regression ...
Blettner, Maria   +3 more
core   +1 more source

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