Results 31 to 40 of about 1,446,763 (330)

Is Mean Time to Failure (MTTF) Equal to Mean Time of Life for Unrepairable Systems? [PDF]

Journal of KONBiN, 2021
Abstract One of the most important reliability parameters is the mean time to failure (MTTF). It is widely accepted that the MTTF is equal to the mean time of life ET. This article shows that this is not necessarily true. Although for the most commonly used statistical distributions (such as exponential, Gaussian, chi-square, Fisher ...
openaire   +1 more source

The Sequential Organ Failure Assessment (SOFA) Score: has the time come for an update?

Critical Care, 2023
The Sequential Organ Failure Assessment (SOFA) score was developed more than 25 years ago to provide a simple method of assessing and monitoring organ dysfunction in critically ill patients.
R. Moreno, A. Rhodes, L. Piquilloud, G. Hernández, J. Takala, H. Gershengorn, M. Tavares, C. Coopersmith, S. Myatra, M. Singer, E. Rezende, H. Prescott, M. Soares, J. Timsit, D. D. de Lange, C. Jung, J. D. De Waele, G. Martin, C. Summers, É. Azoulay, T. Fujii, A. McLean, J. Vincent   +22 more
semanticscholar   +1 more source

Fuzzy-Logic-Based Mean Time to Failure (MTTF) Analysis of Interleaved Dc-Dc Converters Equipped with Redundant-Switch Configuration

Applied Sciences, 2018
Interleaved dc-dc converters in sensitive applications necessitate an enhanced reliability. An interleaved converter equipped with redundant components can fulfill the reliability requirements.
Tohid Rahimi, Hossein Khoun Jahan, Frede Blaabjerg, Amir Sajjad Bahman, Seyed Hossein Hosseini   +4 more
doaj   +1 more source

MOCA ARM: Analog Reliability Measurement based on Monte Carlo Analysis [PDF]

Journal of Electrical and Computer Engineering Innovations, 2016
Due to the expected increase of defects in circuits based on deep submicron technologies, reliability has become an important design criterion. Although different approaches have been developed to estimate reliability in digital circuits and some ...
S. Taghipour, R. Niaraki Asli
doaj   +1 more source

Investigation of influence of winding structure on reliability of permanent magnet machines

CES Transactions on Electrical Machines and Systems, 2020
Winding is an important part of the electrical machine and plays a key role in reliability. In this paper, the reliability of multiphase winding structure in permanent magnet machines is evaluated based on the Markov model.
Wei Li, Ming Cheng
doaj   +1 more source

Comparative Reliability Analysis of Substation Automation Architecture Based on IEC 61850 Standard [PDF]

Journal of Electrical and Computer Engineering Innovations, 2016
Using IEC 61850 standard would increase the reliability and availability of electricity network and put a huge impact on network automation. Even though much research works has been done in substation system reliability, there is a few works in automated
A. Mokari-Bolhasan, N. Taghizadegan-Kalantari   +1 more
doaj  

Venous Thromboembolism in Pediatric Bone Sarcoma Patients: A 10‐Year, Single‐Institution Experience Encompassing the COVID‐19 Pandemic

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Osteosarcoma (OS) and Ewing sarcoma (EWS) are the most common primary bone cancers in children, but acute thrombosis is poorly characterized in this population. Our study evaluated the rates of venous thromboembolism (VTE) and associated risk factors in pediatric patients with bone sarcomas treated over a 10‐year period encompassing
Sarah Kappa, Shou Xu, Mark Zobeck, Sarah E. Sartain, Nino Rainusso, Lisa Wang, Nicole Montgomery, Paige Wheaton, Sarah Whittle   +8 more
wiley   +1 more source

Therapeutic Apheresis for Intravenous Methylprednisolone‐Refractory Neuromyelitis Optica Spectrum Disorder: Clinical and Radiological Outcomes in a Single‐Center Case Series

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi, Daisuke Katagiri, Takeyuki Watadani, Shunichi Matsuda, Hiroshi Kaneko, Noritoshi Arai   +5 more
wiley   +1 more source

Statistical inference of reliability for a K-out-of-N: G system with switching failure under Poisson shocks

Statistical Theory and Related Fields
Based on the stochastic uncertainty of the system's operating environment, this research presents statistical inferences on the mean time to failure (MTTF) of a K-out-of-N: G non-repairable system model with switching failure under Poisson shocks.
Fang Luo, Linmin Hu, Yuyu Wang, Xiaoyun Yu   +3 more
doaj   +1 more source

Research On Reliability Evaluation Of Deep-Water Manual Gate Valve Based On Markov Method

Journal of Applied Science and Engineering, 2023
As a key equipment of the subsea production system, the deep-water manual gate valve is typically in an extremely complex working environment, making its reliability crucial.
Ning Zhang, Xiao Liu, Taiyuan Liu, Baojiang Sun   +3 more
doaj   +1 more source