Browse Research and Tech Reports - Computer Science by Title

  • Yee, Alexander; Kondo, Shigeru (2011-11-11)
    Hypergeometric series are powerful mathematical tools with many usages. Many mathematical functions, such as trigonometric functions, can be partly or entirely expressed in terms of them. In most cases this allows efficient ...

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  • Meseguer, José (Elsevier, 2012-06-29)
    Rewriting logic is a simple computational logic that can naturally express both concurrent computation and logical deduction with great generality. This paper provides a gentle, intuitive introduction to its main ...

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  • Rothganger, Fredrick H. (2004-11)
    This thesis introduces a novel representation for three-dimensional (3D) objects in terms of local affine-invariant descriptors of their appearance and the spatial relationships between the corresponding affine regions. ...

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  • Maitre, Matthieu; Guillemot, Christine; Morin, Luce (IEEE, 2006-10)
    The compression efficiency of Distributed Video-Coding (DVC) suffers from the necessity of transmitting a large number of key-frames which are intra-coded. This paper describes a new 3D model-basedDVC approach which reduces ...

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  • Vu, Long; Do, Quang; Nahrstedt, Klara (2011-03-31)
    In this paper, we first characterize the fine-grained encounter pattern among mobile users found in a large-scale Bluetooth trace collected by 123 participants at the University of Illinois campus from March to August 2010. ...

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  • Arefin, Md Ahsan; Huang, Zixia; Nahrstedt, Klara; Agarwal, Pooja (IEEE, 2012)
    3D Tele-immersive systems create real-time multi-stream and multi-view 3D collaborative contents from multiple sites to allow interactive shared activities in virtual environments. Applications of 3DTI include online sports, ...

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  • Sampemane, Geetanjali (2005-08)
    Recent advances in embedded computing and communications technology have facilitated the development of intelligent environments, enabling exciting new applications, but also creating new challenges for security. The large ...

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  • Farivar, Reza; Venkataraman, Shivaram; Li, Yanen; Chan, Ellick M.; Verma, Abhishek; Campbell, Roy H. (2011-05-03)
    Advent of next generation gene sequencing machines has led to computationally intensive alignment problems that can take many hours on a modern computer. Considering the fast increasing rate of introduction of new short ...

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  • Yang, Yaling; Kravets, Robin (2005-01)
    In this paper, we propose a new protocol, named DDA (Distributed Delay Allocation), which provides average delay guarantees to real-time multimedia applications in wireless ad hoc networks. By adapting the contention window ...

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  • Zheng, Gengbin (2005-12)
    Parallel machines with an extremely large number of processors (at least tens of thousands processors) are now in operation. For example, the IBM BlueGene/L machine with 128K processors is currently being deployed. It is ...

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  • Gaonkar, Shravan; Kravets, Robin H.; Magalhaes, Luiz (2004-05)
    The stability of the Internet depends on the presence of well-behaved flows. While TCP forms the majority of the traffic over the Internet, the Internet user community is also dedicated to supporting mobile devices over ...

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  • He, Wenbo (2008-12)
    Wireless sensor networks (WSNs) were originally motivated by military applications, and are becoming integral part of more and more civilian applications to improve quality of life. With current wireless sensor network ...

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  • He, Wenbo (2008-12)
    Wireless sensor networks (WSNs) were originally motivated by military applications, and are becoming integral part of more and more civilian applications to improve quality of life. With current wireless sensor network ...

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  • Naisbitt, Jeffrey D.; Al-Muhtadi, Jalal F.; Campbell, Roy H. (2005-05)
    Ubiquitous computing environments and the plethora of mobile devices that populate them have led to a global trend for remote collaboration and interaction. This trend demands seamless in-terfaces for remote interaction ...

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  • Kwon, YoungMin; Sundresh, Sameer; Mechitov, Kirill; Agha, Gul A. (2005-06)
    We present an actor platform for wireless sensor networks (WSNs). A typical WSN may consist of hundreds to tens of thousands of tiny nodes embdedded in an environment. Hence, manual reprogramming of nodes for development, ...

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  • Hou, I-Hong; Tsai, Yu-En; Abdelzaher, Tarek F.; Gupta, Indranil (2007-07)
    Code updates, such as those for debugging purposes, are frequent and expensive in the early development stages of wireless sensor network applications. We propose AdapCode, a reliable data dissemination protocol that uses ...

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  • Cook, Damon J.; Biehl, Jacob T.; Metcalf, Heather E.; Bailey, Brian P. (2005-08)
    A key technique for evaluating early design ideas is the use of low-fidelity prototypes. Low-fidelity prototypes allow for rapid iterations that significantly improve the interface design with minimal investment of time ...

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  • Vu, Long; Malik, Rahul; Wang, Qiyan; Nahrstedt, Klara (2009-09-28)
    In this paper, we show that the clustered mobile peer-to-peer (P2P) networks exist in numerous scenarios where mobile users collaborate to improve content distribution services. In order to understand the clustering behavior ...

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  • Vu, Long; Nahrstedt, Klara (2007-06)
    Efficient information dissemination over Mobile Ad hoc Networks (MANET) for urban Disaster/Recovery (D/R) missions is emerging as a very challenging and important research problem. In this paper, we present an adaptive ...

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  • Ahmadi, Hossein; Abdelzaher, Tarek F. (2009-07-30)
    In this paper, we propose a new transport protocol for data collection in sensor networks that monitor physical phenomena. In a network with variable channel condition, this protocol adapts transmission reliability based ...

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