Results 81 to 90 of about 763,856 (375)

Analytical modeling of open-Circuit air-Gap field distributions in multisegment and multilayer interior permanent-magnet machines [PDF]

open access: yes, 2009
We present a simple lumped magnetic circuit model for interior permanent-magnet (IPM) machines with multisegment and multilayer permanent magnets. We derived analytically the open-circuit air-gap field distribution, average air-gap flux density, and ...
Chan, C.C.   +3 more
core   +1 more source

A LOGÍSTICA NO COMÉRCIO ELETRÔNICO B2C: UM ESTUDO NACIONAL MULTI CASOS.

open access: yesCaderno de Administração, 2011
O artigo buscou estudar como as empresas varejistas brasileiras, que utilizam o comércio eletrônico (B2C). Logo, foram realizados pesquisas do tipo qualitativo - exploratória, sendo utilizada a técnica de multi-casos, buscando verificar como as mesmas ...
Fernado Scandiuzzi   +2 more
doaj  

O Processo de Offshoring Internacional Ocorre Apenas de Países Desenvolvidos para as Economias Emergentes?

open access: yesInternext: Revista Eletrônica de Negócios Internacionais, 2012
The offshoring business is booming and what was used by few US pioneers are now spreading through the world (Economist Intelligent Unit, 2006). It is a very new issue at least regarding the origin of the expression and related to services and, even a ...
Paulo Roberto Gião   +1 more
doaj   +1 more source

Directed Navigation of Magnetotactic Bacteria via Magnetotaxis in a 3D Vasculature‐On‐A‐Chip

open access: yesAdvanced Materials Technologies, EarlyView.
A perfusable vascular network is developed to investigate MTB at the single‐microorganism level. MTB is demonstrated to successfully align and navigate along the magnetic field inside the microvessels. Abstract Magnetotactic bacteria (MTB), inherently motile and self‐powered, are promising biorobotic candidates for targeted anti‐cancer drug delivery ...
Brianna Bradley   +6 more
wiley   +1 more source

Videolaringoscopios, ¿el nuevo gold Standard?

open access: yesRevista Electrónica de AnestesiaR, 2015
Desde los años 40 del siglo pasado la laringoscopia directa ha constituido para los anestesiólogos el gold standard para la intubación orotraqueal (IOT).
Eugenio Martínez Hurtado   +3 more
doaj   +1 more source

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

open access: yesAdvanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Automating FEA programming [PDF]

open access: yes
In this paper we briefly describe a combined symbolic and numeric approach for solving mathematical models on parallel computers. An experimental software system, PIER, is being developed in Common Lisp to synthesize computationally intensive and domain ...
Sharma, Naveen
core   +1 more source

Quasiparticle Band Structure and Density Functional Theory: Single-Particle Excitations and Band Gaps in Lattice Models

open access: yes, 1999
We compare the quasiparticle band structure for a model insulator obtained from the fluctuation exchange approximation (FEA) with the eigenvalues of the corresponding density functional theory (DFT) and local density approximation (LDA).
C. De Dominicis   +28 more
core   +1 more source

Extension of vibrational power flow techniques to two-dimensional structures [PDF]

open access: yes
In the analysis of the vibration response and structure-borne vibration transmission between elements of a complex structure, statistical energy analysis (SEA) or finite element analysis (FEA) are generally used.
Cuschieri, Joseph M.
core   +4 more sources

Ecografía aplicada a la vía aérea ¿realidad o ficción?

open access: yesRevista Electrónica de AnestesiaR, 2013
Los ultrasonidos (US) tienen múltiples ventajas: es una técnica segura, rápida, reproducible y que proporciona imágenes dinámicas en tiempo real. Los US son sonidos de más de 20.000 Hz (>2MHz).
Patricia Peralta Rodríguez   +3 more
doaj   +1 more source

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