Format:
Online-Ressource
Edition:
Online-Ausg. 2013 Electronic reproduction; Available via World Wide Web
ISBN:
9783862192274
Content:
Front cover -- Titelseite -- Impressum -- Acknowledgement -- Abstract -- Zusammenfassung -- Contents -- 1 Introduction -- 1.1 Context Awareness and Ubiquitous Computing -- 1.1.1 Ubiquitous Computing -- 1.1.2 Context awareness -- 1.1.3 Low level and high level context -- 1.2 Problem statement -- 1.3 Challenges -- 1.4 Contribution -- 1.5 Outline -- 1.6 Publications -- 2 State of the art -- 2.1 Computer clocks and synchronization protocols -- 2.1.1 Network Time Protocol (NTP) -- 2.1.2 Time synchronization in wireless sensor networks -- 2.2 Architectures for context awareness -- 2.2.1 -- 2.2.2 CARISMA -- 2.2.3 MiddleWhere -- 2.2.4 Solar -- 2.2.5 Gaia -- 2.2.6 Sentient Object Model -- 2.2.7 Hydrogen -- 2.2.8 RCSM -- 2.2.9 Software framework of Henricksen and Indulska -- 2.2.10 CASS -- 2.2.11 SOCAM -- 2.2.12 Software framework of Korpipää et al. -- 2.2.13 CAPNET -- 2.3 Quality of context -- 2.4 Human activity recognition -- 3 Reasons for timing issues -- 3.1 Clock drift and possibility of clock adjustment -- 3.1.1 Experimental setup -- 3.1.2 Results -- 3.1.3 Discussion of results -- 3.2 Construction related differences -- 3.3. Processing load of sensor devices and network sending time -- 3.4 Context processing delays -- 4 Analysis of the influence of time synchronization on reasoning accuracy -- 4.1 Influence on accuracy for user defined rules -- 4.2 Influence on accuracy for classification learning -- 4.2.1 Experimental setup -- 4.2.2 Results -- 4.3 Conclusion -- 5 Requirements of an architecture for context awareness -- 5.1 Functional requirements -- 5.1.1 Encapsulation of sensor interfaces -- 5.1.2 Distributed processing and load distribution -- 5.1.3 Dynamic environment support -- 5.1.4 Time synchronization -- 5.2 Software qualities -- 5.2.1 Maintainability -- 5.2.2 Scalability
Content:
5.2.3 Reliability -- 6 Directed acyclic graph based reasoning -- 6.1 Stream barrier approach -- 6.2. DAG approach -- 6.3 Evaluation -- 6.4 Optimized DAG creation -- 6.4.1 Derive the directed graph -- 6.4.2 Derive the optimum reasoning sequence -- 6.5 Conclusion -- 7 Time locality as a new parameter for Quality of Context -- 8 Conclusion and Outlook -- 8.1 Conclusion -- 8.1.1 Applicability of known synchronization approaches -- 8.1.2 Reasons for timing issues -- 8.1.3 Impact of time synchronization on reasoning accuracy -- 8.1.4 Synchronization approach and new Quality of Context parameter -- 8.2 Outlook -- Back cover
Note:
Lizenzpflichtig
,
Zugl.: Kassel, Univ., Diss., 2011
,
""Front cover ""; ""Titelseite ""; ""Impressum ""; ""Acknowledgement""; ""Abstract""; ""Zusammenfassung""; ""Contents""; ""1 Introduction""; ""1.1 Context Awareness and Ubiquitous Computing""; ""1.1.1 Ubiquitous Computing""; ""1.1.2 Context awareness""; ""1.1.3 Low level and high level context""; ""1.2 Problem statement""; ""1.3 Challenges""; ""1.4 Contribution""; ""1.5 Outline""; ""1.6 Publications""; ""2 State of the art""; ""2.1 Computer clocks and synchronization protocols""; ""2.1.1 Network Time Protocol (NTP)""; ""2.1.2 Time synchronization in wireless sensor networks""
,
""2.2 Architectures for context awareness""""2.2.1 ""; ""2.2.2 CARISMA""; ""2.2.3 MiddleWhere""; ""2.2.4 Solar""; ""2.2.5 Gaia""; ""2.2.6 Sentient Object Model""; ""2.2.7 Hydrogen""; ""2.2.8 RCSM""; ""2.2.9 Software framework of Henricksen and Indulska""; ""2.2.10 CASS""; ""2.2.11 SOCAM""; ""2.2.12 Software framework of KorpipÃ?Ã? et al.""; ""2.2.13 CAPNET""; ""2.3 Quality of context""; ""2.4 Human activity recognition""; ""3 Reasons for timing issues""; ""3.1 Clock drift and possibility of clock adjustment""; ""3.1.1 Experimental setup""; ""3.1.2 Results""
,
""3.1.3 Discussion of results""""3.2 Construction related differences""; ""3.3. Processing load of sensor devices and network sending time""; ""3.4 Context processing delays""; ""4 Analysis of the influence of time synchronization on reasoning accuracy""; ""4.1 Influence on accuracy for user defined rules""; ""4.2 Influence on accuracy for classification learning""; ""4.2.1 Experimental setup""; ""4.2.2 Results""; ""4.3 Conclusion""; ""5 Requirements of an architecture for context awareness""; ""5.1 Functional requirements""; ""5.1.1 Encapsulation of sensor interfaces""
,
""5.1.2 Distributed processing and load distribution""""5.1.3 Dynamic environment support""; ""5.1.4 Time synchronization""; ""5.2 Software qualities""; ""5.2.1 Maintainability""; ""5.2.2 Scalability ""; ""5.2.3 Reliability""; ""6 Directed acyclic graph based reasoning""; ""6.1 Stream barrier approach""; ""6.2. DAG approach""; ""6.3 Evaluation""; ""6.4 Optimized DAG creation""; ""6.4.1 Derive the directed graph""; ""6.4.2 Derive the optimum reasoning sequence""; ""6.5 Conclusion""; ""7 Time locality as a new parameter for Quality of Context""; ""8 Conclusion and Outlook""
,
""8.1 Conclusion""""8.1.1 Applicability of known synchronization approaches""; ""8.1.2 Reasons for timing issues""; ""8.1.3 Impact of time synchronization on reasoning accuracy""; ""8.1.4 Synchronization approach and new Quality of Context parameter""; ""8.2 Outlook""; ""Back cover ""
,
Electronic reproduction; Available via World Wide Web
Additional Edition:
ISBN 9783862192267
Additional Edition:
Druckausg On the importance of time synchronization for context aware applications
Language:
English
Keywords:
Hochschulschrift
;
Academic theses.
;
Academic theses.
;
Thèses et écrits académiques.
URN:
urn:nbn:de:0002-32279
URL:
Volltext
(lizenzpflichtig)
Author information:
Klein, Bernd Niklas 1981-
Bookmarklink
