TAILIEUCHUNG - Handbook of Reliability, Availability, Maintainability and Safety in Engineering Design - Part 51

Handbook of Reliability, Availability, Maintainability and Safety in Engineering Design - Part 51 studies the combination of various methods of designing for reliability, availability, maintainability and safety, as well as the latest techniques in probability and possibility modelling, mathematical algorithmic modelling, evolutionary algorithmic modelling, symbolic logic modelling, artificial intelligence modelling, and object-oriented computer modelling, in a logically structured approach to determining the integrity of engineering design. . | Analytic Development of Availability and Maintainability in Engineering Design 483 A a j a 2 a 3 3 4 115 p j bandwidth between a 3j Let Pipi bit B EiEjXijpij 7 C X B 5 2 7 2 1225 B bI b2 b3 b4 3ij bandwidth between bf bj Let Pij 2 bits C XnB 4 2 10 2 1600 Fig. Example of defined computer automated complexity Tang et al. 2001 An indicative example of defined computer automated complexity is given in Fig. Tang et al. 2001 . b Complicatedness as a Function of Complexity Complicatedness is the degree to which any control over the system is able to manage the level of complexity presented by the system. The means of control can be another system or a person. Complicatedness is a function of complexity K K C . Clearly at C 0 K 0 the properties of a complicatedness function are essentially the same as those of complexity but they are definitely not identical. For example consider K when C Inevitably there is a level of complexity at which any means of system control simply cannot cope with the system as a whole. The system then becomes unmanageable through diminished or lack of control. It is relatively easy to visualise a graph for g g x y with Cg O p2 . twodimensional and less easy to visualise a graph for h h x y z with Ch O p3 . three-dimensional . However a surface with four variables is indeed difficult to visualise although complexity has only reached O p4 . Consider the incomprehensible systems A and B where Ca O pVM and Cb O p1 000 . The complicatedness functions are virtually the same in this case Ka Kb although O p1 000 O p100 . Therefore when C 0 K 0 and C thenK Kmax. Systems are designed to operate and be controllable at an optimal point of complexity . C . Where C C although complexity increases it is well within the interval of controllability. Where C C the system complexity is optimal with respect to its ability to be controlled and where C C complexity is increasing and the system can be controlled only with decelerating . .

Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.