Results 51 to 60 of about 3,471 (201)
Controlled Emergency Landing of an Unpowered Unmanned Aerial System [PDF]
Journal of Intelligent & Robotic Systems, 2012 The ability to perform autonomous emergency (forced) landings is one of the key technology enablers identified for UAS. This paper presents the flight test results of forced landings involving a UAS, in a controlled environment, and which was conducted to ascertain the performances of previously developed (and published) path planning and guidance ...
Luis Mejías, Pillar Eng
openaire +2 more sources
Clinical Cardiology, Volume 49, Issue 7, July 2026.ABSTRACT Background To evaluate the incidence and prognosis of spontaneous coronary reperfusion in STEMI using pre‐hospital loading dose of P2Y12 inhibitors. Methods This prospective bi‐centric study included STEMI patients who referred for primary PCI from June 1, to November 1, 2022.
Pierre Alain Meunier +12 more
wiley +1 more source
Design and Validation of a Modular One-To-Many Actuator for a Soft Wearable Exosuit
Frontiers in Neurorobotics, 2019 The size, weight, and power consumption of soft wearable robots rapidly scale with their number of active degrees of freedom. While various underactuation strategies have been proposed, most of them impose hard constrains on the kinetics and kinematics ...
Michele Xiloyannis +10 more
doaj +1 more source
Droplet, Volume 5, Issue 3, July 2026.A hand‐powered and mechanically programmable electrowetting‐on‐dielectric platform is demonstrated by integrating a contact‐separation triboelectric nanogenerator with a mechanically encoded punch‐card switch array. This unified mechanical–electrical architecture enables autonomous, portable, and robust droplet control for field‐deployable microfluidic
Jing Ding +5 more
wiley +1 more source
European Journal of Medical ResearchStudy design Retrospective cohort study. Objective To compare the clinical and radiographic outcomes of unpowered osteotome-assisted versus powered drill-assisted unilateral biportal endoscopy (UBE) for the treatment of single-level lumbar spinal ...
Weiran Hu +6 more
doaj +1 more source
IEEE Transactions on Neural Systems and Rehabilitation EngineeringUnpowered exoskeletons commonly assist walking by storing and releasing elastic energy, with existing designs largely limited to energy transfer within the lower limbs.
Xianzhong Li +7 more
doaj +1 more source
Parametric Mid-Spatial Frequency Surface Error Synthesis
Photonics, 2021 Standard mid-spatial frequency tooling mark errors were parameterized into a series of characteristic features and systematically investigated. Diffraction encircled and ensquared energy radii at the 90% levels from an unpowered optical surface were ...
Timothy Hefferan +4 more
doaj +1 more source
Intelligent materials for on‐demand electromagnetic absorption
InfoMat, Volume 8, Issue 5, May 2026.This review introduces an innovative “stimulus‐state‐property” paradigm, facilitating a fundamental transition from static to dynamically intelligent electromagnetic wave absorption (EMWA). The key advancement lies in the synergistic integration of external fields with structurally engineered metamaterials and tunable components.
Chongyang Chai +7 more
wiley +1 more source
Unpowered Knee Exoskeleton Reduces Quadriceps Activity during Cycling
Engineering, 2018 Cycling is an eco-friendly method of transport and recreation. With the intent of reducing the energy cost of cycling without providing an additional energy source, we have proposed the use of a torsion spring for knee-extension support.
Ronnapee Chaichaowarat +2 more
doaj +1 more source
Alternative clinical trial designs
Trauma Surgery & Acute Care Open, 2020 High-quality clinical trials are needed to advance the care of injured patients. Traditional randomized clinical trials in trauma have challenges in generating new knowledge due to many issues, including logistical difficulties performing individual ...
John A Harvin +4 more
doaj +1 more source