Results 61 to 70 of about 1,298,028 (310)

Repdigits as Euler functions of Lucas numbers

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
We prove some results about the structure of all Lucas numbers whose Euler function is a repdigit in base 10. For example, we show that if Ln is such a Lucas number, then n < 10111 is of the form p or p2, where p3 | 10p-1 -1.
Bravo Jhon J.   +3 more
doaj   +1 more source

The Impact of Shape on the Perception of Euler Diagrams [PDF]

open access: yes, 2014
Euler diagrams are often used for visualizing data collected into sets. However, there is a significant lack of guidance regarding graphical choices for Euler diagram layout.
Howse, John   +10 more
core   +1 more source

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

open access: yesAdvanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source

Arithmetic Identities Involving Bernoulli and Euler Numbers

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
The purpose of this paper is to give some arithmatic identities for the Bernoulli and Euler numbers. These identities are derived from the several p-adic integral equations on ℤp.
H.-M. Kim, D. S. Kim
doaj   +1 more source

A Graph Theoretic Approach to General Euler Diagram Drawing [PDF]

open access: yes, 2010
Euler diagrams are used in a wide variety of areas for representing information about relationships between collections of objects. Recently, several techniques for automated Euler diagram drawing have been proposed, contributing to the Euler diagram ...
Howse, John   +2 more
core   +1 more source

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

open access: yesAdvanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett   +5 more
wiley   +1 more source

Proceedings of the 3rd International Workshop on Euler Diagrams (Euler Diagrams 2012) [PDF]

open access: yes, 2012
The 3rd International Workshop on Euler Diagrams (Euler Diagrams 2012) was held in Canterbury, UK on 2nd July 2012 in conjunction with the 7th International Conference on the Theory and Application of Diagrams (Diagrams 2012). Euler diagrams represent
Micallef, Luana
core  

How Should We Use Colour in Euler Diagrams? [PDF]

open access: yes, 2014
This paper addresses the problem of how best to use colour in Euler diagrams. The choice of using coloured curves, rather than black curves, possibly with coloured fill is often made in tools that automatically draw Euler diagrams for information ...
Howse, John   +8 more
core   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

open access: yesAdvanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun   +3 more
wiley   +1 more source

Dynamic Euler Diagram Drawing [PDF]

open access: yes, 2004
In this paper we describe a method to lay out a graph enhanced Euler diagram so that it looks similar to a previously drawn graph enhanced Euler diagram. This task is non-trivial when the underlying structures of the diagrams differ.
Rodgers, Peter   +2 more
core   +1 more source

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