Academic literature on the topic 'Realtidssystem'

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Dissertations / Theses on the topic "Realtidssystem"

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Pettersson, Mattias. "Detektering av långsam portskanning i realtidssystem." Thesis, Högskolan Dalarna, Datateknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:du-25550.

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I denna rapport beskriver jag min undersökning av en metod för detektering av långsam portskanning i ett system som utför realtidsanalys. Portskanning används som en rekognoceringsmetod bland illasinnade aktörer i IT-världen. Det används för att bilda en uppfattning om eventuella svagheter som kan finnas i ett nätverk. Långsam portskanning används för att lura ev. Detekteringssystem och därmed kunna skanna utan att upptäckas. Detektering av långsam portskanning kan vara resurskrävande för arbetsminnet då en stor buffer traditionellt upprättas för att analysera nätverkstrafik över en längre tidsperiod. Det finns även lösningar som analyserar nätverksflöden, vilket istället innebär en förlust av information och att port skanning ej kan upptäckas i realtid. Jag har skapat ett detekteringsystem där jag undersöker möjligheten att använda en databas för detektering av långsam portskanning. Det görs i ett system som ana-lyserar paket i realtid. Resultatet blev ett program som klarar av just det. Det upptäcker vanliga portskan-ningsattacker i realtid och långsamma attacker via presentation i en databas.
In this report I describe my investigation of a method for slow port scanning detec-tion in a real-time analysis system. Port scanning is used as a reconnaissance technique used by perpetrators in the IT world. It is used to form an idea of any vulnerabilities that may exist in a network. Slow port scanning is used to try to bypass detection systems and thus able to per-form a scan without being detected. Slow port scanning detection may be resource-intensive for the computer memory since a large buffer is traditionally established to analyze network traffic over a longer period of time. There are also solutions that analyze netflow data, which provides less information and is unable to detect port scanning in real time. I have created a detection system where I investigate the possibility of using data-base in order to detect slow port scanning. The method is part of a system that ana-lyzes real-time packages. The result is a program is capable of doing just that. It detects regular port scan attacks in real time and slow attacks through presentation of the database.
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Börlin, Jenny. "Simulering, kodgenerering och implementation av ett realtidssystem." Thesis, KTH, Maskinkonstruktion (Inst.), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99291.

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At the School of Industrial Engineering and Management, KTH Stockholm, courses in embedded systems are developed which the students attending the mechatronics aim attend. In the courses, the students get to practice control design in real-time. For this purpose there are DC motors that are controlled by a microcontroller and an interface card that has been developed at the department. When realizing a system, it is modeled in Matlab/Simulink, in order to implement the real-time design in Rubus and CodeWarrior. The tutorials/lab exercises used in the courses are under constant development, and the thought is to develop a summoning tutorial/lab exercise where the students are supposed to realize a system from modeling to real-time implementation. The aim of the thesis work has been to examine the possibility to use generated code from Simulink together with a real-time implementation, and demonstrating this with an application. Furthermore, the aim has been to model and implement the application as far as time allows. A model of an elevator has been developed and implemented in Simulink. A PID-regulator controls the system, and for the behavior of the elevator Stateflow has been used. Code generation with Real-Time Workshop has been accomplished for the subsystem Elevator controller and included  in CodeWarrior. A real-time design has been implemented in Rubus and tested in CodeWarrior along the code from Simulink. The thesis shows that it is possible to implement the generated code in the same project in CodeWarrior, along with a real-time design made in Rubus.
På institutionen för maskinkonstruktion utformas kurser i inbyggda system, som studenter ska läsa som går inriktningen i mekatronik. I kurserna ingår att praktiskt tillämpa realtidsreglering. Till detta använder man sig av dc-motorer, som styrs via en mikrokontroller och ett tillhörande motorkort som utvecklats på institutionen. För att implementera ett system modelleras systemet i Matlab/Simulink för att sedan implementera realtidsstyrningen i Rubus och CodeWarrior. Vidareutveckling av de tutorials man använder sig av sker ständigt, och tanken är att ta fram en sammanfattande laboration där studenterna får gå från modellering till realtidsimplementering. Examensarbetet har gått ut på att undersöka möjligheten att använda genererad kod från Simulink tillsammans med en realtidsimplementering och demonstrera detta i en applikation. Vidare har syftet varit att så långt som det hinns med, modellera och implementera applikationen i realtid. En modell av en hiss har tagits fram, som har byggts upp i Simulink. Systemet har reglerats med en PID-regulator och för att styra hissens beteende har Stateflow använts. Med hjälp av Real-Time Workshop har kod för delsystemet Elevator controller sedan genererats och inkluderats i CodeWarrior. Examensarbetet visar att det är möjligt att implementera den genererade koden i samma projekt i CodeWarrior med en realtidsdesign från Rubus.
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3

Tešanović, Aleksandra. "Developing reusable and reconfigurable real-time software using aspects and components /." Linköping : Univ, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5857.

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4

Dobrin, Radu. "Transformation methods for off-line schedules to attributes for fixed priority scheduling /." Västerås : Mälardalen University, 2003. http://www.mrtc.mdh.se/publications/0540.pdf.

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Lennvall, Tomas. "Handling aperiodic tasks and overload in distributed off-line scheduled real-time systems /." Västerås : Mälardalen University, 2003. http://www.mrtc.mdh.se/publications/0541.pdf.

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Pop, Paul. "Analysis and synthesis of communication-intensive heterogeneous real-time systems /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/tek833s.pdf.

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7

Wall, Anders. "Architectural modeling and analysis of complex real-time systems /." Västerås : Mälardalen University, 2003. http://www.mrtc.mdh.se/publications/0621.pdf.

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Pettersson, Anders. "Analysis of execution behavior for testing of multi-tasking real-time systems /." Västerås : Mälardalen University, 2003. http://www.mrtc.mdh.se/publications/0623.pdf.

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9

Enblom, Leif. "Utilizing concurrency to gain performance in an industrial automation system /." Västerås : Mälardalen University, 2003. http://www.mrtc.mdh.se/publications/0636.pdf.

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Sebek, Filip. "Instruction cache memory : issues in real-time systems /." Västerås : Mälardalen University, 2002. http://www.mrtc.mdh.se/publications/0433.pdf.

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Books on the topic "Realtidssystem"

1

Aleksandra, Tešanović. Developing reusable and reconfigurable real-time software using aspects and components. Linköping: Univ., 2006.

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2

Nilsson, Robert. A mutation-based framework for automated testing of timeliness. Linko ping: Department of Computer and Information Science, Linko ping University, 2006.

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3

Manolache, Sorin. Analysis and optimisation of real-time systems with stochastic behaviour. Linko ping: Linko pings universitet, 2005.

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