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On transaction processing with partial validation and timestamp ordering in mobile broadcast environments
2002
IEEE transactions on computers
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The protocol can detect data conflicts at an early stage at the mobile clients and resolve data conflicts flexibly using dynamic adjustment of timestamp ordering. ...
Conventional concurrency control protocols are inapplicable in mobile broadcast environments due to a number of constraints of wireless communications. ...
CityU 1152/01E) and was supported in part by US National Science Foundation EIA-9900895, CCR-0098269, and IIS-0208758. ...
doi:10.1109/tc.2002.1039845
fatcat:y3nxrnvjqncd3faiixbedtffxe
Concurrency Control Using Timestamp Ordering in Broadcast Environments
2002
Computer journal
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In the near future, tens of millions of users will have access to distributed information systems through the wireless interface in their mobile computers. ...
To reduce the number of unnecessary transaction restarts such that the timeliness of mobile transactions can be enhanced, we propose another protocol based on timestamp ordering that can show significant ...
CityU 1152/01E) and was supported in part by NSF grant EIA-9900895. ...
doi:10.1093/comjnl/45.4.410
fatcat:k5774ugzpbdufibxwpltr4xqfu
Multiversion reconciliation for mobile databases
1999
Proceedings 15th International Conference on Data Engineering (Cat. No.99CB36337)
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As mobile computing devices become more and more popular, mobile databases have started gaining popularity. ...
An important feature of these database systems is their ability to allow optimistic replication of data by permitting disconnected mobile devices to perform local updates on replicated data. ...
A key concept in our algorithm is that conflict resolution and detection are decoupled. The responsibility for detecting conflicts lies with the server. ...
doi:10.1109/icde.1999.754974
dblp:conf/icde/PhatakB99
fatcat:h7hs5mn2qzghzefr4bjercy4tm
A Mobile Positioning Method Based on Deep Learning Techniques
2019
Electronics
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In practical experimental environments, there are 4525 records, 59 different base stations, and 582 different Wi-Fi access points detected in Fuzhou University in China. ...
that the average error of location estimation was 9.19 m by the proposed mobile positioning method with two timestamps. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/electronics8010059
fatcat:fhsjqjaxorhytgxs44c4jkan6i
Transaction-Centric Reconciliation in Disconnected Client–Server Databases
2004
Journal on spesial topics in mobile networks and applications
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As mobile computing devices become more and more common, mobile databases are becoming popular. ...
An important feature of these database systems is their ability to allow optimistic replication of data by providing disconnected mobile devices the ability to perform local updates. ...
The snapshots are computed by considering each timestamp that could be applied to the client transaction in increasing order. ...
doi:10.1023/b:mone.0000034700.03069.48
fatcat:2jabbb3zpfddrdy6ur4yaxzvpu
Broadcasting Group Information to Ensure Consistency and Correctness in Mobile Computing Environments
[chapter]
2006
Lecture Notes in Computer Science
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In this environments, a mobile host have a cache to avoid the bandwidth usage and improve the response time of transactions. ...
Recent advances in wireless communication technology and popularity of portable computers have rendered the mobile computing environments that users access the information via wireless channel, regardless ...
Window Report W R(B i ), W R(B i ) = {[j, T S(j)] |j ∈ D, and B i − W < T S(j) < B i } D is a set of data items in the database, j is an identifier of data item that has been updated in the server during ...
doi:10.1007/11802167_58
fatcat:txpqwv63bvhe3blzdapfoqr5l4
Supporting transactional cache consistency in mobile database systems
1999
Proceedings of the 1st ACM international workshop on Data engineering for wireless and mobile access - MobiDe '99
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In this paper, we propose a new protocol, called OCC-UTS (Optimisitic Concurrency Control with Update TimeStamp), to support transactional cache consistency in a wireless mobile computing environment by ...
In a mobile computing environment, caching of frequently accessed data has been shown to be a useful technique for reducing contention on the narrow bandwidth of the wireless channels. ...
Acknowledgements Special thanks go to the reviewers who have provided helpful comments of drafts of this paper. ...
doi:10.1145/313300.313322
dblp:conf/mobide/LeeHY99
fatcat:fb2skm7w7rartmdpm7tutqvzh4
Causality and the Spatial–Temporal Ordering in Mobile Systems
2004
Journal on spesial topics in mobile networks and applications
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The error in the estimates of a mobile node, due to clock drift, about the region in which other mobile nodes may be present is formulated. ...
Several mobile computing applications require that both the order and location of occurrence of events be taken into account during decision making. ...
In several scenarios, a mobile computing system can be considered to be a distributed computing system with the additional notion of node mobility. ...
doi:10.1023/b:mone.0000034704.13096.22
fatcat:ldwb2biim5cdbcb7olbkhb6wjy
Core-Based Dynamic Community Detection in Mobile Social Networks
2013
Entropy
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The problem of detecting the stable community in mobile social networks has been studied in this paper. Community cores are considered as stable subsets of the network in previous work. ...
Based on these observations, this paper divides all nodes into a few of communities due to the community cores. Meanwhile, communities can be tracked through incremental computing. ...
Acknowledgments This project is being jointly supported in part by the National Natural Science Foundation of China under Grant Nos. 61302144 and 61303062. ...
doi:10.3390/e15125419
fatcat:kzg4sbga2jbshe6qbrctmzylse
Efficient Local Path Planning Algorithm Using Artificial Potential Field Supported by Augmented Reality
2021
Energies
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Mobile robots in industry are commonly used in warehouses and factories. ...
This method was experimentally verified using a Husarion ROSbot 2.0 PRO mobile robot and Robot Operating System in a laboratory environment. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/en14206642
fatcat:gt65xutmyzbb3lm5hn54vzkq5y
Using reordering technique for mobile transaction management in broadcast environments
2003
Data & Knowledge Engineering
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As computer hardware and wireless network technologies are developed to a high degree, there are many research efforts which intend to utilize data broadcasting to a large population of mobile clients ...
When any kind of conflicts is found, the conflict order is determined according to the notion of reordering and the remaining operations are executed to hold the decision. ...
Let us assume that r-w or w-w conflicts between T m and T si (i P 1) have occurred after a mobile computer received BC j .Cont. If w-r conflicts are found, T m is aborted. ...
doi:10.1016/s0169-023x(02)00155-6
fatcat:aewmadfbaffg3o6bp3z2yei75e
Using distributed consistent branching for efficient reconciliation of mobile workspaces
2006
2006 International Conference on Collaborative Computing: Networking, Applications and Worksharing
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Optimistic replication allows mobile workspaces to remain accessible during interrupted network access, but require consecutive handling of any conflicts. ...
When conflict handling requires manual intervention by the user, the system must not require that conflicts are resolved immediatley after their detection. ...
ACKNOWLEDGEMENT This work was supported in part by the EU IST program in context of the XtreemOS project (contract FP6-033576). ...
doi:10.1109/colcom.2006.361837
dblp:conf/colcom/HupfeldG06a
fatcat:4ejcvkli2vfynbnp6tv3wm2r44
Using distributed consistent branching for efficient reconciliation of mobile workspaces
2006
2006 International Conference on Collaborative Computing: Networking, Applications and Worksharing
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Optimistic replication allows mobile workspaces to remain accessible during interrupted network access, but require consecutive handling of any conflicts. ...
When conflict handling requires manual intervention by the user, the system must not require that conflicts are resolved immediatley after their detection. ...
ACKNOWLEDGEMENT This work was supported in part by the EU IST program in context of the XtreemOS project (contract FP6-033576). ...
doi:10.1109/colcom.2006.361860
dblp:conf/colcom/HupfeldG06
fatcat:k3knnrdtlbfnng62w7f47ctsl4
Defending against wormhole attacks in mobile ad hoc networks
2006
Wireless Communications and Mobile Computing
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In ad hoc networks, malicious nodes can carry wormhole attacks to fabricate a false scenario on neighbor relations among mobile nodes. ...
The mechanism uses geographic information to detect anomalies in neighbor relations and node movements. ...
Acknowledgement The authors would like to thank the editor and the anonymous reviewers for their valuable comments and suggestions. ...
doi:10.1002/wcm.292
fatcat:whpko6g6yngzhkcarhat364ozi
HomeGuardian: Detecting Anomaly Events in Smart Home Systems
2022
Wireless Communications and Mobile Computing
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Attack vectors to smart homes inevitably manifest in abnormal event contexts. In this paper, we propose HomeGuardian, a context-based approach to identify abnormal events in smart homes. ...
In our approach, we extract temporal context and environmental context from system logs, aggregate (embed) these hybrid contexts, and construct a learning-based classifier to identify the abnormal events ...
Wireless Communications and Mobile Computing The framework of the anomaly detection system Home-Guardian is shown in Figure 2 . ...
doi:10.1155/2022/8022033
fatcat:iulgzyplprh3rj4jbapkw3re7m
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