100,923 research outputs found
Development and implementation of preventive-maintenance practices in Nigerian industries.
A methodology for the development of PM using the modern approaches of FMEA, root-cause analysis, and fault-tree analysis is presented. Applying PM leads to a cost reduction in maintenance and less overall energy expenditure. Implementation of PM is preferable to the present reactive maintenance procedures (still prevalent in Nigeria
Risk analysis beyond vulnerability and resilience - characterizing the defensibility of critical systems
A common problem in risk analysis is to characterize the overall security of
a system of valuable assets (e.g., government buildings or communication hubs),
and to suggest measures to mitigate any hazards or security threats. Currently,
analysts typically rely on a combination of indices, such as resilience,
robustness, redundancy, security, and vulnerability. However, these indices are
not by themselves sufficient as a guide to action; for example, while it is
possible to develop policies to decrease vulnerability, such policies may not
always be cost-effective. Motivated by this gap, we propose a new index,
defensibility. A system is considered defensible to the extent that a modest
investment can significantly reduce the damage from an attack or disruption. To
compare systems whose performance is not readily commensurable (e.g., the
electrical grid vs. the water-distribution network, both of which are critical,
but which provide distinct types of services), we defined defensibility as a
dimensionless index. After defining defensibility quantitatively, we illustrate
how the defensibility of a system depends on factors such as the defender and
attacker asset valuations, the nature of the threat (whether intelligent and
adaptive, or random), and the levels of attack and defense strengths and
provide analytical results that support the observations arising from the above
illustrations. Overall, we argue that the defensibility of a system is an
important dimension to consider when evaluating potential defensive
investments, and that it can be applied in a variety of different contexts.Comment: 36 pages; Keywords: Risk Analysis, Defensibility, Vulnerability,
Resilience, Counter-terroris
Steering Capital: Optimizing Financial Support for Innovation in Public Education
Examines efforts to align capital to education innovation and calls for clarity and agreement on problems, goals, and metrics; an effective R&D system; an evidence-based culture of continuous improvement; and transparent, comparable, and useful data
CAHRS hrSpectrum (November-December 2008)
HRSpec2008_12.pdf: 478 downloads, before Oct. 1, 2020
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