Results 231 to 240 of about 669,953 (290)

Minimal repair models with non-negligible repair time

Reliability Engineering and System Safety, 2022
Abstract In existing minimal repair models, it is usually supposed that the repair time of systems is negligible, and thus the occurrences of breakdowns obey non-homogeneous Poisson Process within a replacement interval. However, for the case that the mean working time of a system is not far longer than its mean repair time, ignoring repair time may ...
Peng Liu, Guan Jun Wang
exaly   +2 more sources

Maintenance Policies with Minimal Repair

Economic Quality Control, 2004
Summary: This article gives a survey on some important maintenance policies involving minimal repairs and replacements of technical systems. The main focus is on policies, which have been published after 1990. Based on a thinned nonhomogeneous Poisson process, repair cost limit policies with minimal repair are discussed in more detail.
Mamabolo, R. M., Beichelt, F. E.
exaly   +2 more sources

Minimally invasive mitral valve repair

Heart, 2018
### Learning objectives Modified cardiopulmonary bypass techniques, including vacuum-assisted venous drainage, were introduced in 1995 and enabled safe and effective minimally invasive mitral valve (MV) surgery. Approaches have evolved since the first successful right parasternal, trans-sternal and right mini-thoracotomy heart valve surgeries.1–3 ...
Hoda, Javadikasgari, Rakesh M, Suri, Bassman, Tappuni, A Marc, Gillinov   +3 more
  +5 more sources

Minimally Invasive Achilles Repair Techniques

Orthopedic Clinics of North America, 2020
Achilles tendon rupture is an increasingly common problem with an aging population participating in high-level physical activities. Appropriate treatment has been debated for decades, but good outcomes have been reported after conservative and surgical management. The development of minimally invasive surgical techniques for Achilles repair has reduced
Thomas, Clanton, Ingrid K, Stake, Katherine, Bartush, Marissa D, Jamieson   +3 more
openaire   +2 more sources

Minimally invasive mitral valve repair

Current Opinion in Anaesthesiology, 2014
Meanwhile mitral valve insufficiency is probably the second most common heart valve disease represented in cardiac surgery. Due to low perioperative morbidity and mortality, nowadays mitral valve repair can even be considered in asymptomatic patients.
Henryk, Welp, Sven, Martens
openaire   +2 more sources

Ordering Policies under Minimal Repair

IEEE Transactions on Reliability, 1986
Many maintenance policies in the literature have assumed that whenever a unit is to be replaced, a new unit is immediately available. However, if the procurement lead time is not negligible, an ordering policy should determine when to order a spare and when to replace the operating unit.
Park, Kyung S., Park, Young T.
openaire   +1 more source

Age-dependent minimal repair

Journal of Applied Probability, 1985
A stochastic model is developed to describe the operation in time of the following maintained system setting. A piece of equipment is put in operation at time 0. Each time it fails, a maintenance action is taken which, with probability p(t), is a complete repair or, with probability q(t)=1– p(t), is a minimal repair, where t is the age of the equipment
Block, Henry W., Borges, Wagner S., Savits, Thomas H.   +2 more
openaire   +2 more sources

Replacement Policies under Minimal Repair

Journal of the Operational Research Society, 1981
In many situations where system failures occur the concept of ‘minimal repair’ is important. A minimal repair occurs when the failed system is not treated so as to return it to ‘as new’ condition but is instead returned to the average condition for a working system of its age.
openaire   +1 more source