Results 51 to 60 of about 76,470 (160)

Legendre–Clebsch Condition for Functional Involving Fractional Derivatives with a General Analytic Kernel

Fractal and Fractional
Fractional calculus of variations for a broad class of fractional operators with a general analytic kernel function is considered. Using techniques from variational analysis, we derive first- and second-order necessary optimality conditions, namely the ...
Faïçal Ndaïrou
doaj   +1 more source

On the Hamilton-Jacobi equation for second class constrained systems

, 2003
We discuss a general procedure for arriving at the Hamilton-Jacobi equation of second-class constrained systems, and illustrate it in terms of a number of examples by explicitely obtaining the respective Hamilton principal function, and verifying that it
Rothe, K D, Scholtz, F G
core   +1 more source

Crater Observing Bioinspired Rolling Articulator (COBRA)

Advanced Intelligent Systems, EarlyView.
Crater Observing Bio‐inspired Rolling Articulator (COBRA) is a modular, snake‐inspired robot that addresses the mobility challenges of extraterrestrial exploration sites such as Shackleton Crater. Incorporating snake‐like gaits and tumbling locomotion, COBRA navigates both uneven surfaces and steep crater walls.
Adarsh Salagame, Henry Noyes, Eric Sihite, Arash Kalantari, Alireza Ramezani   +4 more
wiley   +1 more source

Contact Force Estimation of Continuum Robots without Embedded Sensors: A Review

Advanced Intelligent Systems, EarlyView.
This review surveys methods for estimating contact forces in continuum robots without embedded sensors. It explains why contact force matters, classifies force patterns, and groups existing methods into three approaches based on actuation, deformation, and environment information.
An Hu, Yu Sun
wiley   +1 more source

Stability of Euler-Lagrange-Jensen’s (a,b)- Sextic Functional Equation in Multi-Banach Spaces

International Journal of Analysis and Applications, 2018
In this paper, we prove the Hyers-Ulam Stability of Euler-Lagrange-Jensen’s (a,b)-Sextic Functional Equation in Multi-Banach Spaces.
John Michael Rassias, R. Murali, A. Antony Raj   +2 more
doaj   +2 more sources

Direct and Inverse Variational Problems on Time Scales: A Survey

, 2016
We deal with direct and inverse problems of the calculus of variations on arbitrary time scales. Firstly, using the Euler-Lagrange equation and the strengthened Legendre condition, we give a general form for a variational functional to attain a local ...
AB Malinowska, AB Malinowska, AB Malinowska, AB Malinowska, AB Malinowska, AB Malinowska, B Brunt van, CD Ahlbrandt, D Crăciun, DFM Torres, DFM Torres, DJ Saunders, DR Davis, E Girejko, E Girejko, E Merrell, FM Atici, FM Atici, FM Atici, ID Albu, IV Orlov, IV Orlov, J Douglas, L Bourdin, M Bohner, M Bohner, M Bohner, M Dryl, M Dryl, M Dryl, M Dryl, MC Caputo, MJ Bohner, MR Segi Rahmat, N Martins, N Martins, N Martins, N Martins, NRO Bastos, PE Hydon, R Almeida, R Almeida, R Hilscher, RAC Ferreira, S Hilger, S Hilger, T Ernst, T Odzijewicz, V Kac, V Lakshmikantham, Z Bartosiewicz   +50 more
core   +1 more source

Nonsilting transport characteristics of coal slurry in a deep underground fluidization conveying pipeline under the action of a guide vane swirler

Deep Underground Science and Engineering, EarlyView.
Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao, Shaodi Zhao, Yan Yin, Zhongbin Wang, Shuai Liu, Shirong Ge   +5 more
wiley   +1 more source

Design of HAWT Rotor for Non‐Uniform Inflow Conditions: A Theoretical and Experimental Approach for Shear Flow

Energy Science &Engineering, EarlyView.
This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak, Piotr Strzelczyk, Taeseong Kim   +2 more
wiley   +1 more source

New Applications of a Kind of Infinitesimal-Operator Lie Algebra

Advances in Mathematical Physics, 2016
Applying some reduced Lie algebras of Lie symmetry operators of a Lie transformation group, we obtain an invariant of a second-order differential equation which can be generated by a Euler-Lagrange formulism.
Honwah Tam, Yufeng Zhang, Xiangzhi Zhang
doaj   +1 more source

Some extensions of the Einstein-Dirac equation

, 2006
We considered an extension of the standard functional for the Einstein-Dirac equation where the Dirac operator is replaced by the square of the Dirac operator and a real parameter controlling the length of spinors is introduced.
Baum, Baum, Bleecker, Bourguignon, Eui Chul Kim, Friedrich, Friedrich, Kim, Wang   +8 more
core   +2 more sources