Results 151 to 160 of about 893,475 (344)

Nonlinear Buckling Analysis of Pipe Handling Stability of Quadruple-Joint Stand Drilling Rig

Shiyou jixie, 2019
The quadruple-joint stand ultra-deep drilling rig uses quadruple-joint stand for drilling operations, which can reduce the tripping time, shorten the drilling cycle and decrease the probability of complex accidents.
Zuo Weidong, Fang Taian, Wu Qiudong, Zhou Zhixiong, Yang Xiaoguang, Wu Changliang   +5 more
doaj  

Structural modeling for control design (articulated multibody component representation) [PDF]

High gain, high frequency flexible responses in gimbaled multibody systems are discussed. Their origin and physical significance are described in terms of detailed mass and stiffness modeling at actuator/sensor interfaces.
Haugse, E. D., Jones, R. E., Salus, W. L.   +2 more
core   +1 more source

Pharmacokinetics, Pharmacodynamics, and Safety of Subcutaneous Belimumab in Pediatric Patients With Systemic Lupus Erythematosus: A Multicenter, Open‐Label Trial

Arthritis Care &Research, EarlyView.
Objective This study aimed to characterize the pharmacokinetics, pharmacodynamics, safety, and exploratory efficacy of subcutaneous belimumab in pediatric patients with active systemic lupus erythematosus (SLE) receiving standard therapy. Methods This single‐arm, multicenter, open‐label trial (GSK study 200908; ClinicalTrials.gov identifier ...
Hermine I. Brunner, Jordi Antón, Inmaculada Calvo‐Penadés, Richard Dimelow, Gerd Horneff, Sylvia Kamphuis, Rebecca Marino, Andre van Maurik, Kirsten Minden, Masaaki Mori, Josephine Ocran‐Appiah, Christel Wilkinson, Yuichi Yamasaki, Deepak Assudani, for the Pediatric Rheumatology Collaborative Study Group (PRCSG) and Paediatric Rheumatology International Trials Organisation (PRINTO) Network investigators   +14 more
wiley   +1 more source

Retractions in Rheumatology: Trends, Causes, and Implications for Research Integrity

Arthritis Care &Research, EarlyView.
Objective We aimed to describe the trends and main reasons for study retraction in rheumatology literature. Methods We reviewed the Retraction Watch database to identify retracted articles in rheumatology. We recorded the main study characteristics, authors’ countries, reasons for retraction, time from publication to retraction, and trends over time ...
Anna Maria Vettori, Michele Iudici
wiley   +1 more source

An Adaptive Human Pilot Model With Reaction Time Delay for Enhanced Adaptive Control in Piloted Systems

International Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley   +1 more source

Electronic Stability Control to Improve Active Vehicle Safety. Part I: Review of Electronic Stability Control Systems

Механика машин, механизмов и материалов, 2009
Advanced chassis control systems enable a vehicle to achieve new levels of performance in handling stability and responsiveness. This paper aims to provide a technical overview of state-of-the-art systems for electronic stability control.
B.N. Shirokau
doaj  

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Excimer lasers [PDF]

The results of a two-year investigation into the possibility of developing continuous wave excimer lasers are reported. The program included the evaluation and selection of candidate molecular systems and discharge pumping techniques. The K Ar/K2 excimer
Hess, L. D., Palmer, A. J., Pepper, D. M., Stephens, R. R.   +3 more
core   +1 more source

Innovating Aircraft Repair Processes: The Role of Digitalization in Sustainability

Advanced Engineering Materials, EarlyView.
This research explores how digitalization—by storing detailed non‐destructive testing data in structured DICONDE databases and creating a standard data model of the component—innovates aviation maintenance and repair processes. Coupled with a developed state‐based simulation model, it enables data‐driven, sustainable repair strategies that reduce waste,
Johanna Aigner, Geo Jacob, Florian Raddatz, Gerko Wende   +3 more
wiley   +1 more source