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Articles 1 - 13 of 13
Full-Text Articles in Physical Sciences and Mathematics
Evaluating Head Gestures For Panning 2-D Spatial Information, Matthew O. Derry
Evaluating Head Gestures For Panning 2-D Spatial Information, Matthew O. Derry
Master's Theses
New, often free, spatial information applications such as mapping tools, topological imaging, and geographic information systems are becoming increasingly available to the average computer user. These systems, which were once available only to government, scholastic, and corporate institutions with highly skilled operators, are driving a need for new and innovative ways for the average user to navigate and control spatial information intuitively, accurately, and efficiently. Gestures provide a method of control that is well suited to navigating the large datasets often associated with spatial information applications. Several different types of gestures and different applications that navigate spatial data are examined. …
Automation In Cs1 With The Factoring Problem Generator, Joshua B. Parker
Automation In Cs1 With The Factoring Problem Generator, Joshua B. Parker
Master's Theses
As the field of computer science continues to grow, the number of students enrolled in related programs will grow as well. Though one-on-one tutoring is one of the more effective means of teaching, computer science instructors will have less and less time to devote to individual students. To address this growing concern, many tools that automate parts of an instructor’s job have been proposed. These tools can assist instructors in presenting concepts and grading student work, and they can help students learn to program more effectively. A growing group of intelligent tutoring systems attempts to tie all of this functionality …
A Neural Network Approach To Border Gateway Protocol Peer Failure Detection And Prediction, Cory B. White
A Neural Network Approach To Border Gateway Protocol Peer Failure Detection And Prediction, Cory B. White
Master's Theses
The size and speed of computer networks continue to expand at a rapid pace, as do the corresponding errors, failures, and faults inherent within such extensive networks. This thesis introduces a novel approach to interface Border Gateway Protocol (BGP) computer networks with neural networks to learn the precursor connectivity patterns that emerge prior to a node failure. Details of the design and construction of a framework that utilizes neural networks to learn and monitor BGP connection states as a means of detecting and predicting BGP peer node failure are presented. Moreover, this framework is used to monitor a BGP network …
Implementation Of Sustainable Management Practices At Two California Central Coast Vineyards And Their Effects On Soil Fertility, Dawn M. Stimson
Implementation Of Sustainable Management Practices At Two California Central Coast Vineyards And Their Effects On Soil Fertility, Dawn M. Stimson
Master's Theses
Implementation of Sustainable Management Practices at Two California Central Coast Vineyards and Their Effects on Soil Fertility
Dawn Michelle Stimson
“Sustainable agriculture” has gained increased popularity in recent years. This study was conducted to determine the effects of sustainable management practices on soil fertility at two California Central Coast vineyards. The effects of cover crops (Erosion Control Mix - blando brome [Bromus hordeaceus], hykon rose clover [Trifolium hirtum All.], and zorro annual fescue [Vulpia mourns]), green waste compost (Forest Blend), and reduced tillage on soil fertility were investigated in San Luis Obispo, California on a clay and sandy loam soil. …
Mechanisms For Temporal Change In Phytoplankton Composition In San Luis Obispo Bay California, Marc T. Tognazzini
Mechanisms For Temporal Change In Phytoplankton Composition In San Luis Obispo Bay California, Marc T. Tognazzini
Master's Theses
Coastal topography and more specifically, the impact of local hydrography can significantly influence phytoplankton dynamics along the California coast. In San Luis Obispo Bay California, the local hydrography is influenced by the presence of a lee and proposed upwelling shadow in the northwest corner of the bay. These conditions allow for periods of unperturbed phytoplankton growth creating phytoplankton incubation areas. Phytoplankton dynamics including accumulation, advection, and composition were examined in San Luis Obispo Bay California from January to June 2004 using all the primary techniques of ocean monitoring encompassed in the coastal module of the Global Ocean Observing System. These …
Feeding Phishers, Nicholas J. Lynch
Feeding Phishers, Nicholas J. Lynch
Master's Theses
Phishing campaigns continue to deceive users into revealing their credentials, despite advancing spam filters, browser and toolbar warnings, and educational efforts. Recently, researchers have begun investigating how fake credentials --- or honeytokens --- can be used to detect phishing sites and protect users. BogusBiter, one such work, creates sets of honeytokens based on users' real credentials and sends them alongside real user submissions to phishing sites. In this paper, we present Phish Feeder, an anti-phishing tool which extends the BogusBiter honeytoken generation algorithm in order to create more realistic and authentic-looking credentials. Phish Feeder also employs a ``honeytoken repository'' which …
Energetic Path Finding Across Massive Terrain Data, Andrew N. Tsui
Energetic Path Finding Across Massive Terrain Data, Andrew N. Tsui
Master's Theses
Before there were airplanes, cars, trains, boats, or bicycles, the primary means of transportation was on foot. Unfortunately, many of the trails used by ancient travelers have long since been abandoned. We present a software tool which can help visualize and predict where these forgotten trails might lie through the use of a human-centered cost metric. By comparing the paths generated by our software with known historical trails, we demonstrate how the tool can indicate likely trails used by ancient travelers. In addition, this new tool provides novel visualizations to better help the user understand alternate paths, effect of terrain, …
Store And Forward Routing For Sparse Pico-Satellite Sensor Networks With Data-Mules, Trevor Joseph Koritza
Store And Forward Routing For Sparse Pico-Satellite Sensor Networks With Data-Mules, Trevor Joseph Koritza
Master's Theses
Satellites are playing an increasingly important role in collecting scientific information, providing communication services, and revolutionizing navigation. Until recently satellites were large and very expensive, creating a high barrier to entry that only large corporations and government agencies could overcome. In the past few years the CubeSat project at California Polytechnic University in San Luis Obispo (Cal Poly) has worked to refine the design and launching of small, lightweight, and less expensive satellites called pico-satellites, opening space up to a wider audience. Now that Cal Poly has the launch logistics and hardware under control, a new problem has arisen. These …
Boundless Fluids Using The Lattice-Boltzmann Method, Kyle J. Haughey
Boundless Fluids Using The Lattice-Boltzmann Method, Kyle J. Haughey
Master's Theses
Computer-generated imagery is ubiquitous in today's society, appearing in advertisements, video games, and computer-animated movies among other places. Much of this imagery needs to be as realistic as possible, and animators have turned to techniques such as fluid simulation to create scenes involving substances like smoke, fire, and water. The Lattice-Boltzmann Method (LBM) is one fluid simulation technique that has gained recent popularity due to its relatively simple basic algorithm and the ease with which it can be distributed across multiple processors. Unfortunately, current LBM simulations also suffer from high memory usage and restrict free surface fluids to domains of …
Incremental Validation Of Formal Specifications, Paul S. Corwin
Incremental Validation Of Formal Specifications, Paul S. Corwin
Master's Theses
This thesis presents a tool for the mechanical validation of formal software specifications. The tool is based on a novel approach to incremental validation. In this approach, small-scale aspects of a specification are validated, as part of the stepwise refinement of a formal model.
The incremental validation technique can be considered a form of "lightweight" model checking. This is in contrast to a "heavyweight" approach, wherein an entire large-scale model is validated en masse.
The validation tool is part of a formal modeling and specification language (FMSL), used in software engineering instruction. A lightweight, incremental approach to validation is beneficial …
Pipelined Apache Http Server, Kevin Le
Pipelined Apache Http Server, Kevin Le
Master's Theses
Web servers often become overloaded with irregular surges in web traffic. Several techniques have been explored to cope with these overloads such as distributing load throughout different servers. This thesis presents Pipelined Apache HTTP Server, a modified version of the Apache Software Foundation’s HTTP Server that utilizes a pipelined execution of Apache’s request cycle. We discuss Apache’s original architecture, the modifications necessary for implementation of pipelined execution, and analyze its run time. Ultimately, we hoped to increase throughput of Apache but fall short because of unbalanced request phases and pipelining overhead.
A Unified Resource Platform For The Rapid Development Of Scalable Web Applications, Russell Palmiter
A Unified Resource Platform For The Rapid Development Of Scalable Web Applications, Russell Palmiter
Master's Theses
This thesis presents Web Utility Kit (WUT): a platform that helps to simplify the process of creating modern web applications. It addresses the need to simplify the web development process through the creation of a hosted service that provides access to a unified set of resources. The resources are made available through a variety of protocols and formats to help simplify their consumption. It also provides a uniform model across all of its resources making multi-resource development an easier and more familiar task. WUT saves the time and cost associated with deployment, maintenance, and hosting of the hardware and software …
Tall Fescue (Lolium Arundinaceum (Schreb.) S.J. Darbyshire) Cultivar Performance In The Central California Coastal Region, Seril Shimizu
Tall Fescue (Lolium Arundinaceum (Schreb.) S.J. Darbyshire) Cultivar Performance In The Central California Coastal Region, Seril Shimizu
Master's Theses
Tall fescue (Lolium arundinaceum (Schreb.) S.J. Darbyshire) has long been known as a turfgrass that utilizes lower levels of inputs than most other cool season turfgrasses (Turgeon, 2005). In recent years, turf breeders have been selecting for cultivars of tall fescue that have finer leaf textures. As the use of tall fescue expands, consumers want to now what cultivar to use and how to manage it. This study looked at 18 tall fescue cultivars grown at two mowing heights of five and 10 centimeters and evaluated plant quality based on stand density, leaf texture, and genetic plant color. In the …