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Articles 31 - 34 of 34

Full-Text Articles in Physical Sciences and Mathematics

Tandem Queues With Non-Stationary Arrivals, Senthil Balaji Girimurugan May 2009

Tandem Queues With Non-Stationary Arrivals, Senthil Balaji Girimurugan

All Theses

We consider a network of K queues in tandem labeled Q1, Q2, ..,QK. The arrivals to Q 1 form a non-homogeneous Poisson process whose intensity is periodic. We conjecture that asymptotically the arrival process Aj to Qj, j= 1,2,..,K is cycle stationary. In addition, we conjecture that asymptotically as 'j' gets larger, the arrival process at the jth queue gets closer to a stationary point process. Hence, the queue performance measures become more stationary as 'j' increases. We perform Monte-Carlo simulations and design statistical tests whose results support the conjecture.


Evaluating The Use Of Snmp As A Wireless Network Monitoring Tool For Ieee 802.11 Wireless Networks, Robert Johnson May 2009

Evaluating The Use Of Snmp As A Wireless Network Monitoring Tool For Ieee 802.11 Wireless Networks, Robert Johnson

All Theses

The increasing popularity of wireless networks has led to instances of high utilization and congestion, some of which have resulted in an interruption of network service. A thorough understanding of how IEEE 802.11 wireless networks operate is crucial to predicting and preventing future interruptions. There have been many studies performed on wireless networks. Of those that have captured data from the wireless side, most have used a form of wireless network monitoring known as Vicinity Sniffing (wireless sniffing from a location that is physically close to an access point to be in the broadcast range) as the primary means of …


Ocular Vergence Response Over Anaglyphic Stereoscopic Videos, Brian Daugherty May 2009

Ocular Vergence Response Over Anaglyphic Stereoscopic Videos, Brian Daugherty

All Theses

The effect of anaglyphic stereographic stimuli on ocular vergence response is examined. An experiment is performed comparing ocular vergence response induced by anaglyphic stereographic display versus standard monoscopic display. Two visualization tools, synchronized three-dimensional scanpath playback and real-time dynamic heatmap generation,
are developed and used to subjectively support the quantitative analysis of ocular disparity. The results of a one-way ANOVA indicate that there is a highly significant effect of anaglyphic stereoscopic display on ocular vergence for a majority of subjects although consistency of vergence response is difficult to predict.


Teaching Specifications Using An Interactive Reasoning Assistant, Dana Leonard May 2009

Teaching Specifications Using An Interactive Reasoning Assistant, Dana Leonard

All Theses

The importance of verifiably correct software has grown enormously in recent years as software has become integral to the design of critical systems, including airplanes, automobiles, and medical equipment. Hence, the importance of solid analytical reasoning skills to complement basic programming skills has also increased. If developers cannot reason about the software they design, they cannot ensure the correctness of the resulting systems. And if these systems fail, the economic and human costs can be substantial.
In addition to learning analytical reasoning principles as part of the standard Computer Science curriculum, students must be excited about learning these skills and …