# Browse Research and Tech Reports - Computer Science by Issue Date

• (2004-01)
Designers need a larger electronic workspace effective for sketching. To provide such a workspace, we have developed a focus+context screens system which tethers a smaller 'focus' screen to a larger 'context' screen. For ...

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• (2004-01)
3D neuro-anatomical images and other volumetric data sets are important in many scientific and biomedical fields. Since such sets may be extremely large, a scalable compression method is critical to store, process and ...

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PDF (239kB)
• (2004-01)
We consider the problem of finding "relative" time-periodic solutions of chaotic partial differential equations with symmetries. Relative time-periodic solutions are solutions which are periodic in time, up to a transformation ...

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• (2004-01)
By enabling users to better manage information across PDAs, laptops, graphics tablets, and large screens, the use of an interactive space could dramatically improve how users share information in collaborative work. To ...

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PDF (415kB)
• (2004-01)
It is well known that a user, who participates in an overlay network like Gnutella, does not stay in the network continuously, but goes online and offline repeatedly. In addition to this user behavior, dynamic network ...

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• (2004-01)
We evaluated four techniques for controlling focus+context screens. We compared an egocentric versus exocentric View mixed with whether the display on the focus screen moves in the same (paper mapping) versus opposite ...

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• (2004-01)
We describe an approach for answer selection in a free form question answering task. In order to go beyond a key-word based matching in selecting answers to questions, one would like to develop a principled way for the ...

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PDF (343kB)
• (2004-02)
In this paper, we explore the fundamental limits of sensor network lifetime that all algorithms can possibly achieve. Specifically, under the assumptions that nodes are deployed as a Poisson point process with density ...

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• (2004-02)
GREEN is a stateless queue-management algorithm that removes TCP's bias against connections with longer round-trip times, resulting in a high degree of fairness while maintaining high link utilization, low packet loss, and ...

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• (2004-02)
Distinct from wireless ad hoc networks, wireless sensor networks are data-centric, application-oriented, collaborative, and energy-constrained in nature. In this paper, formulate the problem of data transport in sensor ...

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PDF (397kB)
• (2004-02)
We examine the problem of providing useful feedback to users who are denied access to resources, while controlling the disclosure of the system security policies. High-quality feedback enhances the usability of a system, ...

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• (2004-02)
In this paper we present an online algorithm for pursuit-evasion in an unknown simply connected enviroment, for one pursuer that has minimal sensing and carries a set of stationary sentries that it can drop off and pick ...

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PDF (159kB)
• (2004-02)
Mobile systems primarily processing multimedia data are expected to become important platforms for pervasive computing. These systems, however, must satisfy large, dynamic demands of multimedia applications subject to ...

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PDF (141kB)
• (2004-03)
Recently, the Web has been rapidly deepened" with the prevalence of databases online and becomes an important frontier for data integration. On this deep Web, a significant amount of information can only be accessed as ...

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PDF (217kB)
• (2004-03)
This paper presents a tool-supported methodological paradigm for object-oriented software development, called monitoring-oriented programming and abbreviated MOP, in which runtime monitoring is a basic software design ...

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PDF (462kB)
• (2004-03)
Previous work on topology control usually assumes homogeneous wireless nodes with uniform transmission ranges. In this paper, we propose two localized topology control algorithms for heterogeneous wireless multi-hop networks ...

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• (2004-03)
The field of studies on complex systems is becoming one of the most active research areas in computer science. Among those systems, there is a type of system that has the following characteristics: comprising a large number ...

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PDF (170kB)
• (2004-03)
Many problems in engineering and physics require the solution of a large sequence of linear systems. We can reduce the cost of solving subsequent systems in the sequence by recycling information from previous systems. We ...

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PDF (625kB)
• (2004-04)
An important problem for agents in open multiagent systems is how to find agents that match certain criteria. A number of middle agent services, such as matchmaking and brokering services, have been proposed to address ...

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• (2004-04)
To contribute to systems that reason about human attention, our work empirically demonstrates how a user's mental workload changes during task execution. We conducted a study where users performed an interactive hierarchical ...

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