Search results for "käyttöjärjestelmät"
showing 8 items of 8 documents
LTSP-järjestelmän omaksuminen : oppilaitosten omaksumispäätökseen vaikuttavat tekijät
2007
StateOS : A Memory-Efficient Hybrid Operating System for IoT Devices
2023
The increasing significance of operating systems (OSs) in the development of the internet of things (IoT) has emerged in the last decade. An event-driven OS is memory efficient and suitable for resource-constrained IoT devices and wireless sensors, although the program’s control flow, which is determined by events, is not always obvious. A multithreaded OS with sequential control flow is often considered clearer. However, this approach is memory-consuming. A hybrid OS seeks to combine the strengths of the event-driven approach with multithreaded approach. An event-driven cooperative threaded OS represents a hybrid approach that supports concurrency by explicitly yielding control to another …
Markkinapohjaiset mallit käyttöjärjestelmän muistinhallinnassa
2007
An anomaly intrusion detection system based on Intelligent user recognition
2002
Recently computer systems have become a critical part of network-connected system, possessing essential economic and human values to individuals and organizations. This key role of the systems has increased the requirements for their protection. They have to be more resistant against malicious activities. Intrusion detection is aimed at detecting and preventing such activities. It forms the last line of defence in the overall protection scheme of a computer system. It is useful not only in detecting successful breaches of security, but also for monitoring attempts to breach security, which provides important information for timely countermeasures. Thus, intrusion detection systems are usefu…
Langattomille anturiverkoille soveltuvat MAC-protokollat
2008
Change and Control Paradoxes in Mobile Infrastructure Innovation: The Android and iOS Mobile Operating Systems Cases
2012
The advent of the smart phone as a highly complex technology has been accompanied by mobile operating systems (OS), large communities of developers, diverse content providers, and increasingly complex networks, jointly forming digital infrastructures. The multi-faceted and relational character of such digital infrastructures raises issues around how change and control can be conceptualized and understood. We discuss how change and control are paradoxically related in digital infrastructures and how they affect the evolution of such infrastructures. We examine these paradoxes by examining the change in, and competition between, two mobile operating systems: Apple's iOS and Google's Android a…
Page replacement in operating system memory management
2007
Hypervisor-Based White Listing of Executables
2019
We describe an efficient system for ensuring code integrity of an operating system (OS), both its own code and application code. The proposed system can protect from an attacker who has full control over the OS kernel. An evaluation of the system's performance suggests the induced overhead is negligible. peerReviewed