Coding techniques for failure recovery in a distributive modular memory organization
This paper considers various coding techniques which could be applied to a memory organization to achieve detection and correction of failures. In this discussion, we define a fault as a malfunction of a systems component and a failure as a manifestation of a fault. Notice that a single fault can result in multiple failures. Thus, techniques such as error-detecting and correction codes, when used alone, are limited in that they operate on failures---not faults.
No. 1 ESS maintenance plan
The No. 1 electronic switching system has a much higher concentration of control than previous telephone systems. This makes the task of providing continuous telephone service more challenging than ever. It is important that troubles be detected almost instantaneously, before many calls are affected. The main subjects of this article are (1) a scheme for duplicating control equipment and (2) a description of circuit and program facilities for taking advantage of this duplication to detect, to automatically recover from, and to analyze troubles.
Frequency selective surface design for blinds applications
In this paper, the reconfigurable blind structure with frequency selective surfaces(FSS) for the building applications are presented. Frequency transmission characteristics for different angles of the proposed blind-FSSs are investigated and verified through simulation and measurement. The simulation results show that we can implement the reconfigurable blind-FSS for multiband wireless applications. To verify the proposed paper, two kinds of blind-FSSs, crossed dipole FSS and circular ring FSS are fabricated and measurements are performed for different angles. The proposed structure in this paper which is very simple, can be easily applied to any planar surface for wireless security applications at low cost.