Results 21 to 30 of about 3,519,795 (189)

An agent-based implementation of hidden Markov models for gas turbine condition monitoring [PDF]

open access: yes, 2014
This paper considers the use of a multi-agent system (MAS) incorporating hidden Markov models (HMMs) for the condition monitoring of gas turbine (GT) engines.
Twiddle, John   +3 more
core   +4 more sources

Data Mining for Gearbox Condition Monitoring [PDF]

open access: yes, 2011
Engineering datasets have growing rapidly in size and diversity as data acquisition technology has developed in recent years. However, the full use of the datasets for maximizing machine operation and design has not been investigated systematically ...
Gu, Fengshou   +2 more
core   +3 more sources

Predictive condition monitoring of industrial systems for improved maintenance and operation [PDF]

open access: yes, 2014
Maintenance strategies based on condition monitoring of the different machines and devices in an industrial process can minimize downtime, increase the safety of plant operations and help in the process of decision-taking for control and maintenance ...
Ruiz Cárcel, Cristóbal
core   +3 more sources

Turbopump Condition Monitoring Using Incremental Clustering and One-class Support Vector Machine [PDF]

open access: yes, 2011
Turbopump condition monitoring is a significant approach to ensure the safety of liquid rocket engine (LRE). Because of lack of fault samples, a monitoring system cannot be trained on all possible condition patterns. Thus it is important to differentiate
Gu, Fengshou   +3 more
core   +3 more sources

A Rough Set Approach of Mechanical Fault Diagnosis for Five-Plunger Pump

open access: yesAdvances in Mechanical Engineering, 2013
Five-plunger pumps are widely used in oil field to recover petroleum due to their reliability and relatively low cost. Petroleum production is, to a great extent, dependent upon the running condition of the pumps.
Jiangping Wang
doaj   +1 more source

Transient Voltage Unit Protection Based on Fault Information Fusion

open access: yesIEEE Access
Transient protection has the advantage of ultra-fast operation. However, traditional transient protection is susceptible to the influences of transitional resistance and the initial fault angle, resulting in issues with sensitivity and reliability under ...
Zhenwei Guo   +3 more
doaj   +1 more source

Transient Protection of UHV Busbars Based on Standardized VMD-Shannon Entropy

open access: yesIEEE Access
Transient bus protection exhibits ultra-high-speed action, yet displays low reliability under weak fault conditions. This paper proposes a novel multidimensional fault analysis framework to address this issue.
Zhenwei Guo   +3 more
doaj   +1 more source

Early Body Mass Index z‐Score Change and Resolution of Severe Malnutrition in Children With Sickle Cell Anemia in a Low‐Income Setting: A Prospective Single‐Arm Extension Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell anemia (SCA) in low‐income settings are at risk of severe malnutrition, but optimal nutritional management has not been established. We evaluated an intensified ready‐to‐use therapeutic food (RUTF) regimen in children with persistent severe malnutrition after initial treatment and assessed whether early ...
Safiya Gambo   +9 more
wiley   +1 more source

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk   +10 more
wiley   +1 more source

Gearbox fault detection using static data and adaptive neurofuzzy inference system [PDF]

open access: yes, 2013
Condition monitoring of a gearbox is a crucial activity due to its importance in power transmission for many industrial applications. Thus, there has always been a constant pressure to improve measuring techniques and analytical tools for early ...
Gu, Fengshou   +3 more
core   +2 more sources

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