29785948
Fast Replacement Route Discovery in Location-Aided Mobile Ad hoc Networks
5331573
All-to-All Broadcasting in Faulty Hypercubes
A new fault-tolerant all-to-all broadcasting algorithm in an n-dimensional hypercube with up to [n/2] faulty links is given. An extension of this algorithm that can tolerate up to [n/2] faulty nodes is also described. These algorithms assume a multiport I/O model, meaning each node can send and receive messages from all its adjacent nodes simultaneously. The total time steps taken by the proposed algorithms are near optimal, and they produce a factor of n less traffic than previously known algorithms.
206892687
Recycled path routing in mobile ad hoc networks
In mobile ad hoc networks, many routing algorithms rely on some form of flooding to accomplish the route discovery process. Flooding, however, consumes many valuable network resources such as time, bandwidth, and power. Most current routing schemes expire valid routes after a time period to account for nodal movement. This paper proposes a new route discovery method, called recycled path routing (RPR), which directs broadcasts toward the destination node even in the absence of location information. The recycled path routing scheme reduces the search space for the destination node by implementing an expired route cache that is utilized by each node in the network. Routes are added to the expired route cache as they expire from the active route cache and remain there until some time interval has passed or a new route has been discovered. Since these expired routes can provide valuable insight into finding new routes, RPR uses them to direct broadcasts toward the destination node. RPR can save a significant quantity of valuable network resources because only nodes near the optimal path will rebroadcast route requests.
38077943
Position-Based Topology-Independent Scheduling Algorithms for Mobile Ad Hoc Networks
35581387
Cluster-based Location Discovery in Ad Hoc Sensor Networks
3150650
Fault-Tolerant All-to-All Broadcasting in Hypercubes
9401551
Sink-to-sensors reliability in sensor networks
The issue of relability, thus far, has not been addressed throughly to any extent in sensor networking research. To the best of our knowledge the first such work that focused on some aspect of reliable communication in sensor networks appeared only in [1]. In this paper, we focus on the problem of communication reliability from the sink to the sensors in a static network.
195862521
The wearable motherboard: a framework for personalized mobile information processing (PMIP)
Textiles and computing share a synergistic relationship, which is being harnessed to create a new paradigm in personalized mobile information processing (PMIP). In this paper, we provide an overview of this "interconnection" between the two fields and present the vision for "E-Textiles," which represents the convergence of the two fields. We discuss the role of the Georgia Tech Wearable Motherboard in pioneering this paradigm of "fabric is the computer" and serving as a framework for PMIP. Finally, recent research in this area resulting in the realization of a "computational fabric network" is discussed.
62719399
Usability, user preferences, effectiveness, and user behaviors when searching individual and integrated full-text databases: implications for digital libraries
This article addresses a crucial issue in the digital library environment: how to support effective interaction of users with heterogeneous and distributed information resources. In particular, this study compared usability, user preference, effectiveness, and searching behaviors in systems that implement interaction with multiple databases through a common interface, and with multiple databases as if they were one (integrated interaction) in an experiment in the Text REtrieval Conference (TREC) environment. Twenty-eight volunteers were recruited from the graduate students of the School of Communication, Information, & Library Studies at Rutgers University. Significantly more subjects preferred the common interface to the integrated interface, mainly because they could have more control over database selection. Subjects were also more satisfied with the results from the common interface, and performed better with the common interface than with the integrated interface. Overall, it appears that for this population, interacting with databases through a common interface, is preferable on all grounds to interacting with databases through an integrated interface. These results suggest that: (1) the general assumption of the information retrieval (IR) literature that an integrated interaction is best needs to be revisited; (2) it is important to allow for more user control in the distributed environment; (3) for digital library purposes, it is important to characterize different databases to support user choice for integration; and, (4) certain users prefer control over database selection while still opting for results to be merged.
34137561
Using Relevance Feedback and Ranking in Interactive Searching
We present results of a study in which 50 searchers, of varying degrees of experience in information retrieval (IR), each performed searches on two TREC-4 adhoc interactive track topics, using a simple interface to the INQUIRY retrieval engine. The foci of our study were : the relationships between the users'models and experience of IR, and their performance in the TREC-4 adhoc task while using a best-match IR system with relevance feedback ; the understanding, use and utility of relevance feedback and ranking in interactive IR ; and, the evaluation of interactive IR.
1442053
User preferences when searching individual and integrated full-text databases
This paper addresses a crucial issue in the digital library environment: how to support effective interaction of users with heterogeneous and distributed information resources. We compared users' preference for systems which implement interaction with multiple databases through a common interface and with multiple databases as if they were one (integrated interaction) in an experiment in the Text REtrieval Conference (TREC) environment. Twenty-eight volunteers were recruited from the graduate students of School of Communication, Information, & Library Studies at Rutgers University. Significantly more subjects preferred the common interface (HERMES) to the integrated interface (HERA). For most of the subjects in this study, the greater control in HERMES outweighed the advantages of HERA such as convenience, efficiency, and ease of use. These results suggest that: (1) the general assumption of the information retrieval (IR) literature that an integrated interaction is best needs to be revisited; (2) it is important to allow for more user control in various ways in the distributed environment; and (3) for digital library purposes, it is important to characterize different databases to support user choice for integration.