Results 31 to 40 of about 367,454 (315)

Lexicographic hyperbolic DEA [PDF]

Journal of the Operational Research Society, 2019
The hyperbolic distance function (HDF) reduces all inputs and increases all outputs simultaneously and at the same rate. Although the corresponding data envelopment analysis (DEA) model is non-linear, for constant returns to scale it can be linearised and for variable returns to scale an efficient iterative approach based on the directional distance ...
Sebastián Lozano 0001, Narges Soltani
openaire   +2 more sources

Elimination of Necking and Aspect Ratio Dependence in Uniaxial Actuators by Continuous Fiber Reinforcement

Advanced Robotics Research, EarlyView.
A novel carbon fiber reinforcement for dielectric elastomer actuators enhances actuation force while decoupling electromechanical performance from the actuator's aspect ratio. Unlike conventional fiber reinforcements, it enables a uniform planar stretch state along the entire actuator.
Markus Koenigsdorff, Stefania Konstantinidi, Anett Endesfelder, Petr Osipov, Johannes Mersch, E.‐F. Markus Vorrath, Martina Zimmermann, Yves Perriard, Gerald Gerlach   +8 more
wiley   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Determinação da uniformidade de distribuição de agroquímicos em grãos de trigo utilizando a técnica da espectrofotometria do uv/visível / Determination of uniformity of agrochemicals distribution on wheat grains by uv/ visible light spectrophotometry

Bioscience Journal, 2009
Objetivou-se com este trabalho avaliar a uniformidade de distribuição do corante Azul FCF, utilizado como traçador, pulverizado em grãos de trigo Triticum ssp..
Rodrigo de Oliveira Simões, Mauri Martins Teixeira, Lêda Rita D'Antonino Faroni   +2 more
doaj  

Pulmonary scan in evaluating alveolar-interstitial syndrome in ER

Emergency Care Journal, 2006
Diffuse comet-tail artifacts at lung ultrasound are due to thickened interlobular septa and extravascular lung water. This condition is typical of the alveolar-interstitial syndrome due to pulmonary edema, diffuse parenchymal lung disease or ARDS. Aim of
Giovanni Volpicelli, Alessandro Mussa, Giovanna Casoli, Giorgio Garofalo, Luciano Cardinale, Fabio Perotto, Mauro Frascisco   +6 more
doaj   +1 more source

Competencia matemática y su autopercepción en estudiantes de los grados universitarios de educación

REDIMAT, 2022
Se evaluó la competencia matemática de los aspirantes a maestros a partir de una prueba diseñada para alumnos de educación primaria. Uno de cada tres alumnos no tiene la competencia necesaria para aprovechar la formación que se les ofrece en la ...
Bartolomé Pizà-Mir, Maria Suñé-Vela
doaj   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Produtividade e rendimento industrial da cana-de-açúcar em função de lâminas de irrigação

Bioscience Journal, 2014
O presente trabalho foi desenvolvido com o objetivo de determinar as lâminas de irrigação que resultem na máxima produtividade, no máximo rendimento econômico e no máximo rendimento industrial da cana-de-açúcar e a relação existente entre a lâmina de ...
Gustavo Haddad Souza Vieira, Everardo Chartuni Mantovani, Gilberto Chohaku Sediyama, Fábio Teixeira Delazari   +3 more
doaj  

A Soft Robotic Device for Targeted Massage Therapy of Residual Limbs

Advanced Robotics Research, EarlyView.
Residual limb edema after amputation can hinder recovery and delay prosthetic fitting. This study presents a soft‐robotic wearable device that delivers sequential compression through pneumatic McKibben actuators. By replicating the principles of manual lymphatic drainage, the device generates controlled mechanotherapeutic pressure patterns, providing a
Maria Grazia Polizzotto, Alessio Capecchi, Maartje Van der Lingen, Emanuele Gruppioni, Arianna Menciassi, Linda Paternò   +5 more
wiley   +1 more source

A Soft Robotic Fish With a Dielectric Elastomer Actuator Body and Negative Stiffness Spine

Advanced Robotics Research, EarlyView.
This work introduces a bio‐mimetic soft robotic fish driven by fiber‐reinforced dielectric elastomer actuators integrated as its body. By prestretching this active skin against a flexible spine, a negative stiffness system is created, enabling large‐amplitude bending.
Markus Koenigsdorff, Simon Holzer, Stefania Konstantinidi, Yoan Civet, Yves Perriard   +4 more
wiley   +1 more source