The project focuses on an relibility package for GNU R, which allows to estimate software reliability metrics like failure rate or hazard rate.

The probability a system performs a specified function or mission under given conditions for a prescribed time.

The ability of an item to perform a required function under stated conditions for a stated period of time. [D01625] ISO 8402 QMPP The probability that an item will perform its intended function for a specified interval under stated conditions. [D01624] USDoD QMPP A fundamental characteristic of an item or material expressed as the probability that it will perform its intended function for a specified time under stated conditions. [D03684] DSMC

The probability that an object survives for a specified time t, i.e. the probability that the object does not fail before t.

The probability that an item will function under a specific set of conditions, for a stated period of time, without failure or unacceptable degradation of performance.

The probability that a device, component or system will perform adequately for the expected time under given conditions.

The relative likelihood that any server, computer, or software program will continue to function.

The ability of an item to perform a required function under stated conditions for a stated period of time without failures. The numerical value of reliability is expressed as a probability from 0 to 1 and is also sometimes known as the probability of mission success. Reliability is the probability, assuming the system was operating at time zero that it continues to operate until time t.

the likelihood of a given piece of process equipment to remain in service for the expected duration.

Reliability is (MTBF-MTTR)/MTBF = 1-MTTR/MTBF. Since typical values for reliability are on the order of .9, .99, or .999, it is common to simply count 9s. So, example, a system with 1 hour of downtime (MTTR = 1 hour) in a thousand hours of operation (MTBF=1000 hours) would be .999 or 3 nines. There are about 9000 hours in a year, so a system running 24x7 with 3 nines reliability should fail about 9 times a year.

The probability that a product will perform a stated function satisfactorily at a desired confidence level for a set period of time under a specified environment.

The probability that a system will adequately accomplish its tasks for a specific period of time, under the expected operating conditions.

The ability of the system/software to perform its required functions under stated conditions for a specified period of time, or for a specified number of operations.

probability that a system will not fail

The probability that an item will continue to function at customer expectation levels at a measurement point, under specified environmental and duty cycle conditions.

The likelihood that a device will provide the specified performance for a specified time under specified conditions.

The characteristic of a product, or any component thereof, expressed as a probability that it would perform its required functions under defined conditions for specified operating periods.

(1) a user-oriented quality requirement specifying the the maximum frequency of system failure, typically measured as the: Mean time between failures (MTF), whereby MTF is defined as the average period of time that an application or component shall continue to function correctly without failure under stated conditions). The number of failures per unit time. (2) a quantitative quality factor measuring the actual frequency of system failure. Contrast with operational availability and robustness.

The characteristic of a device that relates its expected level of performance to the environmental and operating conditions to which it is subjected, as a function of time.

The probability of performing a specified function without failure under given conditions for a specified period of time.

The ability of a component or IT service to perform a required function under stated conditions for a stated period of time. Reliability is now often taken to include resilience. See also MTBF.

The probability that a product will perform its specified function under prescribed conditions without failure for a specified period of time. It is a design parameter that can be made part of a requirements statement. See: mean time between failures, mean time for failures.

The ability of a unit to perform required function fro a stated period of time.

A condition often related to computer hardware or subsystems whereby a single component (server, application, database, etc.) or group of components demonstrates the ability to perform its physical function.

The ability of a system and its parts to perform its mission without failure, degradation, or demand on the support system.

The capability of an implementation to maintain its level of performance under stated conditions for a stated period of time.

The probability specified that a device will perform its objective adequately, for the period of time, under the operating conditions specified.

The ability of an instrument to perform as specified without premature failure.

The probability that a system or a capability of a system will continue to function without failure under given conditions for a specified period of time. Other Terms Patch Lifecycle Manager (PLM) A source manager which provides a central point for tracking the lifecycle of patches against a source tree.

Refers to the expected failure rate of the equipment.

The ability of a SMPS to maintain its functionality and the specifications under stated conditions for a stated period of time.

Ability of a computing system to operate without failing. Reliability is measured by mean-time-between-failures (MTBF).

error rate and failure rate

The ability of an item to perform a required function under stated conditions for a stated period of time. The term `reliability' is also used as a reliability characteristic denoting a probability of success or a success ratio. (ISO 8402: 1986, 3.18)

The ability of a system (or system component) to perform its required functions under stated conditions for a specified period of time.

Probability that a device will accomplish a required function under given conditions over a given period of time. RMS value of AC current with harmonics. The RMS value Yrms of a non-sinusoidal alternating current may be determined on the basis of the individual harmonic currents where Y is the RMS value of the fundamental.

Ability of component to deliver desired functionality for a given period of time and under certain conditions

Reliability is the probability that software will not cause the failure of a system for a specified time under specified conditions.

The ability of a computing system or software to operate without failing.

The probability of a product or service successfully doing its job under given conditions.

The duration or probability of failure-free performance under stated conditions. In OT&E, reliability is usually reported in one of two ways: a. Mission Reliability (R). For equipment operated only during a relatively short-duration mission (as opposed to equipment operated more or less continuously), the probability of completing the mission without an operational mission failure. b. MTBOMF. Mean time between operational mission failures. For more or less continuously operated equipment or systems. MTBOMF measures reliability as it relates to the overall mission of the equipment or system being tested and is the total operating time divided by the number of operational mission failures. MTBOMF is the figure used in the calculation of overall mission reliability (R). MTBOMF is sometimes modified to mean flight hours between operational mission failures (MFHBOMF).

The average amount of time that a component will perform before a failure that causes a loss of data. Often expressed as the mean time to data loss (MTDL) or the mean time to first failure (MTTF).

Aptitude of a device to achieve a required function, under given conditions, for a given length of time. The reliability of an item is the probability that it will adequately perform its specified purpose for a specified period of time under specified environmental conditions.