An exposition of system reliability analysis with an ecological perspective

Rushdi, Ali Muhammad Ali; Hassan, Ahmad Kamal

doi:10.1016/j.ecolind.2015.11.050

Cited by 20 publications

(29 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In engineering, one needs, at least another metric that measures the spread about this mean, namely the variance, or its square root (the standard deviation). Statisticians might be more demanding and ask for the next central moments represented by the coefficient of skewness and the coefficient of kurtosis [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47].…”

Section: Discussionmentioning

confidence: 99%

Variations of the Time to Failure (TTF) for Specific Components in Aeronautical Navigation Systems

Alturki¹,

Rushdi

2021

JERR

View full text Add to dashboard Cite

Aeronautical navigation systems installed at specific locations within Saudi Arabia report the actual observed data of the times to failure (TTFs) for many types of engineering elements made by some typical international highly-acclaimed manufacturers. There is a need to compare these observed data to the estimated data provided by the manufacturers themselves. The paper gathers a lot of data on the actual failure instances of many components produced by a variety of manufacturers and installed at different locations within the extensive area of Saudi Arabia. These data are used to calculate the mean times between failures for these components. The paper points to an inadvertent discrepancy between these data and the corresponding mean times between failures (MTBFs) suggested by some prominent manufacturers. Such suggested MTBFs are typically optimistic and unrealistically high irrespective of the elements, the location, and the manufactures. The work reported herein is a preliminary assessment of this phenomenon that might lead to its theoretical modeling and subsequent understanding.

show abstract

Section: Discussionmentioning

confidence: 99%

Variations of the Time to Failure (TTF) for Specific Components in Aeronautical Navigation Systems

Alturki¹,

Rushdi

2021

JERR

View full text Add to dashboard Cite

show abstract

“…A thing of note herein is that all cells are orthogonal with each other, thus allowing the possibility of arranging variables in multiple ways provided the orthogonality remains. Interested reader is suggested to two recent papers (Rushdi and Hassan 2015 , 2016a ) with extensive manipulation based on Karnaugh Maps.…”

Section: A Karnaugh Map Based Approachmentioning

confidence: 99%

A Karnaugh map based approach towards systemic reviews and meta-analysis

Hassan

2016

SpringerPlus

Self Cite

View full text Add to dashboard Cite

Studying meta-analysis and systemic reviews since long had helped us conclude numerous parallel or conflicting studies. Existing studies are presented in tabulated forms which contain appropriate information for specific cases yet it is difficult to visualize. On meta-analysis of data, this can lead to absorption and subsumption errors henceforth having undesirable potential of consecutive misunderstandings in social and operational methodologies. The purpose of this study is to investigate an alternate forum for meta-data presentation that relies on humans’ strong pictorial perception capability. Analysis of big-data is assumed to be a complex and daunting task often reserved on the computational powers of machines yet there exist mapping tools which can analyze such data in a hand-handled manner. Data analysis on such scale can benefit from the use of statistical tools like Karnaugh maps where all studies can be put together on a graph based mapping. Such a formulation can lead to more control in observing patterns of research community and analyzing further for uncertainty and reliability metrics. We present a methodological process of converting a well-established study in Health care to its equaling binary representation followed by furnishing values on to a Karnaugh Map. The data used for the studies presented herein is from Burns et al (J Publ Health 34(1):138–148, 2011) consisting of retrospectively collected data sets from various studies on clinical coding data accuracy. Using a customized filtration process, a total of 25 studies were selected for review with no, partial, or complete knowledge of six independent variables thus forming 64 independent cells on a Karnaugh map. The study concluded that this pictorial graphing as expected had helped in simplifying the overview of meta-analysis and systemic reviews.

show abstract

“…Terminal-pair reliability expressions for flow or capacitated networks can be checked by any of the three exhaustive tests given in Section 4. These new tests are adaptations of some original tests given by Rushdi [14], in which reliability in a connectivity sense is checked, and which found a variety of applications [15][16][17]. Our new tests are not confined to the connectivity concept, as they pay due attention to the capacity constraints of the flow network.…”

Section: Introductionmentioning

confidence: 98%

Checking Correctness of a Symbolic Reliability Expression for a Capacitated Network

Alsalami

Rushdi

2020

JERR

Self Cite

View full text Add to dashboard Cite

Checking a symbolic reliability expression for a flow network is useful for detecting faults in hand derivations and for debugging computer programs. This checking can be achieved in a systematic way, though it may be a formidable task. Three exhaustive tests are given when a reliability system or network has a flow constraint. These tests apply to unreliability and reliability expressions for non-coherent as well as coherent systems, and to cases when both nodes and branches are unreliable. Further properties of reliability expressions derived through various methods are discussed. All the tests and other pertinent results are proved and illustrated by examples.

show abstract

An exposition of system reliability analysis with an ecological perspective

Cited by 20 publications

References 79 publications

Variations of the Time to Failure (TTF) for Specific Components in Aeronautical Navigation Systems

Variations of the Time to Failure (TTF) for Specific Components in Aeronautical Navigation Systems

A Karnaugh map based approach towards systemic reviews and meta-analysis

Checking Correctness of a Symbolic Reliability Expression for a Capacitated Network

Contact Info

Product

Resources

About