Sökning: "David Sandberg"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden David Sandberg.
1. Understanding Multicore Performance : Efficient Memory System Modeling and Simulation
Sammanfattning : To increase performance, modern processors employ complex techniques such as out-of-order pipelines and deep cache hierarchies. While the increasing complexity has paid off in performance, it has become harder to accurately predict the effects of hardware/software optimizations in such systems. LÄS MER
2. Analysis and Optimization of Systems for Detecting Sleepiness in Drivers
Sammanfattning : .... LÄS MER
3. Detecting Driver Sleepiness
Sammanfattning : Driver sleepiness has been identified as one of the most prevalent factors in road crashes. Methods for online detection of driver sleepiness may help to prevent such sleepiness-related crashes.The main aims of this thesis have been to improve driver sleepiness detection and to further the understanding of how sleepiness impairs driving behavior. LÄS MER
4. Low-density parity-check codes : unequal error protection and reduction of clipping effects
Sammanfattning : The invention of low-density parity-check (LDPC) codes made reliable communication possible at transmission rates very close to the theoretical limit predicted by Shannon. However, communication close to the Shannon limit requires very long codes and results in long delay and high encoder and decoder complexity. LÄS MER
5. Stealthy Sensor Attacks on Feedback Systems : Attack Analysis and Detector-based Defense Mechanisms
Sammanfattning : In this thesis, we investigate sensor attacks on feedback systems and how anomaly detectors can be used as a defense mechanism. We consider an attacker with access to all sensor measurements and full knowledge about the closed-loop system model. LÄS MER