Javad Taheri

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Data gathering in a timely and reliable fashion has been a key concern in wireless sensor networks particularly related to military applications. The introduction of real time communication has created additional challenges in this area with different communication constraints. Since sensor networks represent a new generation of time-critical applications,(More)
Sensor networks are particularly applicable to the tracking of objects in motion. For such applications, it may not necessary that the whole region be covered by sensors as long as the uncovered region is not too large. This notion has been formalized by Balasubramanian et.al. [1] as the problem of κ-weak coverage. This model of coverage provides guarantees(More)
We study the problem of transmitting data from a set of sensors to a base-station where the data is to be gathered. Each sensor continuously generates data and has to transmit it through the network (via other sensor nodes) to the base-station. Considering the battery limitations of the sensors, our goal is to find an optimum location of the base-station(More)
Increasing demand for endoscopic procedures, coupled with decreasing insurance reimbursement, has necessitated improvement in endoscopy unit operational performance measures, such as increasing throughput and reducing staff overtime without an increase in patient waiting time. In pursuit of improving these measurements, maintaining the nurse-to-patient(More)
Exploration of future dreams inclined us in information quest over the global literature. Web crawlers enriched with technological phenomena for such purpose to millions of seekers. The usage of crawling tools implicates justification for their consequences as searching technology that facilitates initiative passion to target new information. Several web(More)
In this paper, we study the fundamental optimization problem in Wireless Sensor Networks of base-station positioning such that data from the sensors may be transmitted to it in an energy-efficient manner. We primarily consider the setting where a sensor transmits all of its data directly to the base-station or relays it via one other node. This setting(More)
This paper considers a setting where a single " leadership agent " intervenes in a multi-agent system through actions that (perhaps subtly) change the dynamics of the system. We describe a number of forms this intervention can take and compare these situations to settings in previous work. We identify two important effects of leadership: faster system(More)
In this era of health care value-based purchasing, health care systems are increasingly focused on maximizing the utilization of their most expensive resources. This trend is evident in gastrointestinal endoscopy which makes up the largest percentage of ambulatory surgical center claims in Medicare. In response to these pressures, the Duke University Health(More)
As members of the Dissertation Committee, we certify that we have read the dis-sertation prepared by Javad Taheri entitled Leadership in Message Interpretation Networks and recommend that it be accepted as fulfilling the dissertation requirement for the Degree of Doctor of Philosophy. Final approval and acceptance of this dissertation is contingent upon the(More)
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