Results 31 to 40 of about 1,230,707 (291)

Research on Pricing of Flexible Two-Dimensional Extended Warranty Considering Preventive Maintenance

Xibei Gongye Daxue Xuebao, 2019
Facing the uncertainty in transaction of two-dimensional extended warranty, a flexible pricing model is presented considering imperfect preventive maintenance combined with the degradation characteristics of item.

doaj   +1 more source

Preventive Maintenance Optimization of Electric Multiple Units Based on a Bi-Level Imperfect Maintenance Strategy

IEEE Access
A preventive maintenance (PM) optimization policy based on a bi-level imperfect maintenance strategy was proposed for electric multiple unit equipment subject to continuous degradation, consistent with actual PM situations.
Lv Xiong, Weixin Du, Jing Li, Zhilong Liu   +3 more
doaj   +1 more source

Availability Optimization of Two-dimensional Warranty Products Under Imperfect Preventive Maintenance

IEEE Access, 2021
For complex and durable products such as automobiles and construction machinery, the quality and reliability characteristics of these products become more and more complex.
Rongcai Wang, Zhonghua Cheng, Liqing Rong, Yongsheng Bai, Qian Wang   +4 more
doaj   +1 more source

An Optimal Imperfect Maintenance Policy for a Partially Observed System With Obvious Failures and Limited Repairs

IEEE Access, 2019
In this paper, we investigate an imperfect maintenance optimization problem for a multi-state, Markovian deterioration system with obvious failures under repair restriction based on those non-periodically collected sensor information.
Hongdong Fan, Zhaoqiang Wang, Jinying Wu, Shengjin Tang   +3 more
doaj   +1 more source

A Two-dimensional Maintenance Service Contract Considering Availability and Maintenance Cost

International Journal of Technology, 2023
In this paper, we study a two- dimensional Maintenance Service Contract (MSC) characterized by two limits (dimensions) of age and usage. It is considered that an agent offers a two-dimensional MSC by guaranteeing a certain level of equipment available
Nur Faizatus Sa’idah, Andi Cakravastia, Udjianna Sekteria Pasaribu, Bermawi Priyatna Iskandar   +3 more
doaj   +1 more source

Infant Embryonal CNS Tumors: Molecular Insights and Treatment Considerations for Contemporary Pediatric Neuro‐Oncology

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Embryonal tumors comprise the majority of malignant central nervous system (CNS) neoplasms diagnosed in children under 3 years of age. Compared with their counterparts in older children, these tumors exhibit distinct molecular biology and a more aggressive clinical phenotype, while their management is complicated by the heightened ...
Sudarshawn Damodharan, Mariah Wright‐Nadkarni, Mohamed S. Abdelbaki, Girish Dhall   +3 more
wiley   +1 more source

Research on imperfect condition-based maintenance strategy based on accelerated degradation process

Measurement + Control
To address the situation that the degraded system cannot be repaired as new and the degradation is accelerated after repair in engineering practice, an imperfect condition-based maintenance model is proposed based on the Gamma process by introducing the ...
Jintao Chen, Lina Ren, Jianhua Li
doaj   +1 more source

Safety and Effectiveness of a High‐Dose, Tailored Tissue Plasminogen Activator Therapy Protocol: A Joint Pediatric Hematology and Cardiac ICU Quality Improvement Initiative Analysis

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric thromboembolism is increasingly encountered in critical care. Systemic thrombolysis with tissue plasminogen activator (tPA) facilitates vessel or valve patency, yet pediatric‐specific protocols remain undefined, and safety concerns persist. Objective To evaluate the efficacy and safety of a tailored, prolonged systemic tPA
Eran Shostak, Oded Gilad, Yael Feinstein, Sigal Nakav, Ofer Schiller, Joanne Yacobovich   +5 more
wiley   +1 more source

A Historical Survey of Corrective and Preventive Maintenance Models with Imperfect Inspections: Cases of Constant and Non-Constant Probabilities of Decision Making

Aerospace
Maintenance strategies play a crucial role in ensuring the reliability and performance of complex systems. Imperfect inspections, characterized by the probabilities of false positives and false negatives, significantly impact the effectiveness of ...
Vladimir Ulansky, Ahmed Raza
doaj   +1 more source

Really Ageing Systems Undergoing a Discrete Maintenance Optimization

Mathematics, 2022
In general, a complex system is composed of different components that are usually subject to a maintenance policy. We take into account systems containing components that are under both preventive and corrective maintenance.
Radim Briš, Pavel Jahoda
doaj   +1 more source