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The increasing amount of resources in a single machine constantly increases the level of server consolidation for virtualization. However, along with the improvement of server efficiency, the dependability of the virtualization layer is not being progressed towards the right direction; instead, the hypervisor level is more vulnerable to diverse failures due to the increasing complexity and scale of...
Modern systems on chip (SoCs) are rapidly becoming complex high-performance computational devices, featuring multiple general purpose processor cores and a variety of functional IP blocks, communicating with each other through on-die fabric. While modular SoC design provides power savings and simplifies the development process, it also leaves significant room for a special type of hardware bugs, interaction...
Continued technology scaling is resulting in systems with billions of devices. Unfortunately, these devices are prone to failures from various sources, resulting in even commodity systems being affected by the growing reliability threat. Thus, traditional solutions involving high redundancy or piecemeal solutions targeting specific failure modes will no longer be viable owing to their high overheads...
The ALICE experiment will utilize the Large Hadron Collider (LHC) at the European laboratory for particle physics, CERN. Various detectors are combined to detect and characterize the quark gluon plasma. The Detector Control System is an essential part for detector operation and covers aspects from gas supply and cooling to power supply and configuration of the detector front end electronics. The DCS...
In this paper we present a low cost fault-tolerant attitude determination system to a scientific satellite using COTS devices. We related our experience in developing the attitude determination system, where we combine proven fault tolerance techniques to protect the whole system composed only by COTS from the effects produced by transient faults. We detailed the failure cases and the detection, reconfiguration...
Atmospheric correction of Hyperion imagery over aquatic environments is generally more demanding than over land because the signal from the water column is small. In this paper, an atmospheric correction algorithm designed for the Hyperion hyper spectral imagery based on the analysis of the atmospheric correction algorithm of FLAASH and the algorithm adopted by MODIS imagery. It makes use of band...
High resolution image sensors are now standard in imaging devices such as mobile phones with camera functionality. Resolution improvement in very small sensors is obtained by decreasing the pixel size but, in CMOS sensors, the likelihood of defective pixels also augments. Hence, sophisticated processing is necessary for achieving high quality images despite of noise and defects. This paper presents...
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