By Jacek Baginski, Andrzej Białas (auth.), Wojciech Zamojski, Jacek Mazurkiewicz, Jarosław Sugier, Tomasz Walkowiak, Janusz Kacprzyk (eds.)
Typical modern advanced method is a multifaceted amalgamation of technical, info, association, software program and human (users, directors and administration) assets. Complexity of any such method comes not just from its concerned technical and organizational constitution yet typically from complexity of knowledge strategies that needs to be applied within the operational atmosphere (data processing, tracking, administration, etc.). In such case conventional tools of reliability research targeted more often than not on technical point are typically inadequate in functionality review and extra cutting edge tools of dependability research has to be utilized that are according to multidisciplinary method of concept, expertise and upkeep of structures working in genuine (and quite often unfriendly) environments.
This monograph provides chosen new advancements in such components of dependability learn as procedure modelling, instruments and methodologies for process research, info defense, safe process layout and particular dependability facets in really good technical purposes. Many sensible circumstances illustrate the common rule that complexity and multiplicity of approach approaches, their concurrency and their reliance on embedded intelligence (human and synthetic) considerably impedes building of strict mathematical types and demands software of clever and delicate computing methods.
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Additional info for Complex Systems and Dependability
If there are issues in operation of DCS “as a whole”, use of mobile test and monitoring workstations allows localization of the problem and its attribution to a specific DCS device. This single device becomes the subject for farther examination on a stationary testbench. Testing of DCS devices operation using the mobile workstation can be performed: • On a grounded aircraft: the workstation is attached to control plugs of the onboard network and operates in “passive” mode, performing following activities: – data exchange analysis by monitoring tools; – execution of tests which automatically check the correctness of data exchange sequences and transferred data values; • On a device (temporarily) disconnected from the other DCS devices: the workstation is attached to the device’s inputs and outputs and executes the tests for checking the device’s operation.
Please note that disjointed classes cannot have common instances. The well-defined classes hierarchy helps to avoid “class cycles”. e. library elements to create ST/PP specifications. g. an asset generic being a parameter of a threat generic, a security objective generic covering a given threat generic. Besides, these individuals have many details assigned. Such details are expressed by data-type properties, like strings, numbers and dates. 5 The Class Properties and Their Restrictions The above discussed hierarchy of classes defines the general taxonomy of the used concepts covering all CC-specification means issues.
Both are applied in bidirectional “navigation” through the ontological model. Figure 2 shows the security objectives selected as a solution to the elementary security issue expressed by the considered TDA_IllegAcc threat. Each of these individuals is easily accessed by clicking it and using the “Protégé Individual Editor”. Moreover (not shown) it is possible to access functional components, which cover them, from any security objective individual, and, finally, from these components to the security functions individuals – the navigation through the entire model is very easy.