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 ...

    application/pdf

    application/pdfPDF (247Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (546Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (308Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (254Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (220Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (8Mb)
  • 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 ...

    application/pdf

    application/pdfPDF (7Mb)
  • 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 ...

    application/pdf

    application/pdfPDF (341Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (341Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (667Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (168Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (200Kb)
  • Wang, Shiguang; Hu, Shaohan; Li, Shen; Liu, Hengchang; Uddin, Md; Abdelzaher, Tarek F. (2013-01-15)

    application/pdf

    application/pdfPDF (1Mb)
  • 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 ...

    application/pdf

    application/pdfPDF (504Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (349Kb)
  • 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 ...

    application/pdf

    application/pdfPDF (811Kb)
  • He, Wenbo; Liu, Xue; Nguyen, Hoang; Nahrstedt, Klara; Abdelzaher, Tarek F. (2006-09)
    A wireless sensor network (WSN) is an ad-hoc network composed of small sensor nodes deployed in large numbers to sense the physical world. Wireless sensor networks have very broad application prospects including both ...

    application/pdf

    application/pdfPDF (272Kb)
  • Uddin, Md Yusuf Sarwar; Wang, Hongyan; Saremi, Fatemeh; Qi, Guo-Jun; Abdelzaher, Tarek F.; Huang, Thomas (2011-05-26)
    We propose PhotoNet, a picture delivery service for camera sensor networks. PhotoNet is motivated by the needs of disaster-response applications, where a group of survivors and first responders may survey damage and send ...

    application/pdf

    application/pdfPDF (365Kb)
  • Iandola, Forrest; Saremi, Fatemeh; Abdelzaher, Tarek F.; Jayachandran, Praveen; Yener, Aylin (International Conference on Information Fusion, 2011-07)
    In networked data fusion systems, results must be produced by end-to-end deadlines. As such, latency is an important attribute contributing to quality-of-information (QoI) in these systems. A key question is how much work ...

    application/pdf

    application/pdfPDF (3Mb)
  • Wang, Dong; Abdelzaher, Tarek F.; Kaplan, Lance; Ganti, Raghu; Hu, Shaohan; Liu, Hengchang (2014-04-23)
    Correctness guarantees are at the core of cyber-physical computing research. While prior research addressed correctness of timing behavior and correctness of program logic, this paper tackles the emerging topic of assessing ...

    application/pdf

    application/pdfPDF (2Mb)Restricted to U of Illinois