Browse Research and Tech Reports - Computer Science by Author "Abdelzaher, Tarek F."

  • 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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  • 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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  • Jayachandran, Praveen; Ganti, Raghu K.; Gupta, Indranil; Abdelzaher, Tarek F. (2006-11)
    Sensor networks pose the challenge of distribution of content generated within the network to the origins of requests for this content in an efficient and timely manner. In this paper, we formulate this multiple-source ...

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  • Jayachandran, Praveen; Abdelzaher, Tarek F. (2007-05)
    Contrary to traditional belief, we show in this paper, that for distributed systems non-preemptive scheduling can perform better than preemptive scheduling in the worst case in terms of task schedulability, under certain ...

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  • Jayachandran, Praveen; Abdelzaher, Tarek F. (2007-05)
    In this paper, we present a delay composition rule that bounds the worst-case end-to-end delay of a job as a function of per-stage execution times of higher priority jobs along its path, in a multistage distributed system ...

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  • Moinzadeh, Parya; Mechitov, Kirill A.; Shiftehfar, Reza; Abdelzaher, Tarek F.; Agha, Gul A.; Spencer, Billie F., Jr. (2011-09-02)
    Building energy-efficient systems is one of the principal challenges in wireless sensor networks. Dynamic voltage scaling (DVS), a technique to reduce energy consumption by varying the CPU frequency on the fly, has been ...

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  • Hu, Shaohan; Su, Lu; Li, Shen; Wang, Shiguang; Pan, Chenji; Gu, Siyu; Amin, Md Tanvir Al; Liu, Hengchang; Nath, Suman; Choudhury, Romit Roy; Abdelzaher, Tarek F. (2014-04-25)
    This paper presents eNav, a smartphone-based vehicular GPS navigation system that has an energy-saving location sensing mode capable of drastically reducing navigation energy needs. Traditional navigation systems sample ...

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  • Nayyeri, Amir; Abdelzaher, Tarek F. (2008-08)
    In this paper we address the reliability problem in storage-centric sensor networks deployed in hazardous environments. We use the nodes' extra flash memory to save distributed encoded blocks of data. We employ erasure ...

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  • Nayyeri, Amir; Abdelzaher, Tarek F. (2008-08)
    In this paper we address the reliability problem in storage-centric sensor networks deployed in hazardous environments. We use the nodes' extra flash memory to save distributed encoded blocks of data. We employ erasure ...

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  • Zhao, Yiran; Li, Shen; Hu, Shaohan; Wang, Hongwei; Yao, Shuochao; Shao, Huajie; Abdelzaher, Tarek F. (VLDB Endowment, 2016-09-04)
    This paper presents a comprehensive evaluation of an ultra-low power cluster, built upon the Intel Edison based micro servers. The improved performance and high energy efficiency of micro servers have driven both academia ...

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  • Pham, Nam D.; Ganti, Raghu K.; Nangia, Saurabh; Pongthawornkamol, Thadpong; Ahmed, Shameem; Abdelzaher, Tarek F.; Heo, Jin; Khan, Maifi; Ahmadi, Hossein (2009-10-08)
    This report presents a participatory sensing service, called Fueoogle, that maps vehicular fuel consumption on city streets, allowing drivers to find the most fuel-efficient routes for their vehicles between arbitrary ...

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  • Li, Shen; Wang, Xiaoxiao; Hu, Shaohan; Zhao, Yiran; Wang, Shiguang; Su, Lu; Abdelzaher, Tarek F. (2015)
    This paper presents the generalized packing server. It reduces the problem of scheduling tasks with precedence constraints on multiple processing units to the problem of scheduling independent tasks. The work generalizes ...

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  • Wu, Po-Liang; Yun, Heechul; Saremi, Fatemeh; Abdelzaher, Tarek F. (2011)
    Recent embedded computing platforms offer multiple independent clocks for different components involved in processing a single instruction stream, such as CPU and memory, giving rise to a new category of power management ...

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  • He, Wenbo; Nguyen, Hoang; Liu, Xue; Nahrstedt, Klara; Abdelzaher, Tarek F. (2007-12)
    Data aggregation is an efficient mechanism widely used in wireless sensor networks (WSN) to collect statistics about data of interests. However, the shared-medium nature of communication makes the WSNs are vulnerable to ...

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  • Wang, Shiguang; Hu, Shaohan; Li, Shen; Liu, Hengchang; Uddin, Md; Abdelzaher, Tarek F. (2013-01-15)

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  • Uddin, Md Yusuf Sarwar; Amin, Md Tanvir Al; Abdelzaher, Tarek F.; Iyengar, Arun; Govindan, Ramesh (2012-04-25)
    This paper addresses the problem of collection and delivery of a representative subset of pictures, in participatory camera networks, to maximize coverage when a significant portion of the pictures may be redundant or ...

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  • Giridhar, Prasanna; Wang, Shiguang; Abdelzaher, Tarek F.; Kaplan, Lance; George, Jemin; Ganti, Raghu (2017-05)
    This paper develops an algorithm that exploits picture-oriented social networks to localize urban events. We choose picture-oriented networks because taking a picture requires physical proximity, thereby revealing the ...

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  • Saremi, Fatemeh; Jayachandran, Praveen; Iandola, Forrest; Uddin, Md Yusuf Sarwar; Abdelzaher, Tarek F. (2011-07)
    This paper develops a framework to analyze the latency and delay composition of workflows in a real-time networked aggregation system. These workflows are characterized by different inputs that are processed along parallel ...

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  • Wang, Dong; Abdelzaher, Tarek F.; Kaplan, Lance (2011-06-14)
    This technical report addresses the challenge of truth discovery from noisy social sensing data. The work is motivated by the emergence of social sensing as a data collection paradigm of growing interest, where humans ...

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  • Dalmia, Kashev; Abdelzaher, Tarek F.; Li, Shen (2016-06-30)
    In this paper, we use passivity theory as an approach for dealing with dynamical systems, and demonstrate how to apply it to software systems in a general way. We first cover key results from passivity theory. Then, using ...

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