Browsing Computer Science Theses and Dissertations by Issue Date
Now showing items 1-20 of 863
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On Numerical Analysis in Residue Number Systems
(1964)Recent attempts to utilize residue number systems in digital computers have raised numerous questions about adapting the techniques of numerical analysis to residue number systems. Among these questions are the ... -
Restructuring Textual Information for Online Retrieval
(1985)Two experiments were conducted to evaluate two styles of online documents. The first experiment compared paper manuals to online manuals using two different database structuring techniques - a sequential (linear) structure ... -
Treemaps: Visualizing Hierarchical and Categorical Data
(1993)Treemaps are a graphical method for the visualization of hierarchical and categorical data sets. Treemap presentations of data shift mental workload from the cognitive to the perceptual systems, taking advantage of the ... -
Adaptive Database Systems Based On Query Feedback and Cached Results
(1994)This dissertation explores the query optimization technique of using cached results and feedback for improving performance of database systems. Cached results and experience obtained by running queries are used to save ... -
Zoomable User Interfaces for the Authoring and Delivery of Slide Presentations
(2003-10-27)Millions of slide presentations are being authored and delivered with computer software every day. Yet much of the computer's power for these tasks remains untapped. Existing interaction techniques leave presenters wrestling ... -
Improving Data Delivery in Wide Area and Mobile Environments
(2003-11-07)The popularity of the Internet has dramatically increased the diversity of clients and applications that access data across wide area networks and mobile environments. Data delivery in these environments presents several ... -
Explaining the emergence of cooperative traits: An axiomatic theory of accumulation
(2003-11-25)In this dissertation I construct an axiomatic theory of action that explains how originally selfish individuals form aggregations and develop cooperative abilities. This theory is more general than the two most widespread ... -
FAST TRANSFORMS BASED ON STRUCTURED MATRICES WITH APPLICATIONS TO THE FAST MULTIPOLE METHOD
(2003-12-01)The solution of many problems in engineering and science is enabled by the availability of a fast algorithm, a significant example being the fast Fourier transform, which computes the matrix-vector product for a $N \times ... -
On the Implementation of an Accurate and Efficient Solver for Convection-Diffusion Equations
(2003-12-03)In this dissertation, we examine several different aspects of computing the numerical solution of the convection-diffusion equation. The solution of this equation often exhibits sharp gradients due to Dirichlet outflow ... -
MANAGING AND EXPLORING MEDIA USING SEMANTIC REGIONS: A SPATIAL INTERFACE SUPPORTING USER-DEFINED MENTAL MODELS
(2003-12-05)Computer users deal with large numbers of personal media objects such as images, audio clips, voice mails, video clips, web pages, emails, and various document files. Users often struggle to interpret, explore, arrange, ... -
Replication Techniques for Peer-to-Peer Networks
(2003-12-05)A close examination of presently deployed peer-to-peer networks (P2P) and existing proposals reveals several trends regarding data management. First, only a small percentage of the queried data is actually retrieved ... -
Optimizing the Execution of Batches of Data Analysis Queries
(2004-02-05)Data analysis applications such as Kronos, a remote sensing application, and the Virtual Microscope, a telepathology application, require operating on and processing large datasets. In such situations, it is important ... -
Inducing Semantic Frames from Lexical Resources
(2004-02-17)The multiple ways in which propositional content can be expressed is often referred to as the paraphrase problem. This phenomenon creates challenges for such applications as information retrieval, information extraction, ... -
HORUS: A WLAN-BASED INDOOR LOCATION DETERMINATION SYSTEM
(2004-04-08)As ubiquitous computing becomes more popular, the need for context-aware applications increases. The context of an application refers to the information that is part of its operating environment. Typically this includes ... -
View-Invariance in Visual Human Motion Analysis
(2004-04-29)This thesis makes contributions towards the solutions to two problems in the area of visual human motion analysis: human action recognition and human body pose estimation. Although there has been a substantial amount of ... -
Data Centric Cache Measurement Using Hardware and Software Instrumentation
(2004-04-30)The speed at which microprocessors can perform computations is increasing faster than the speed of access to main memory, making efficient use of memory caches ever more important. Because of this, information about the ... -
On the Generalized Tower of Hanoi Problem I: An Introduction to Cluster Spaces
(2004-05-04)In this thesis, we examine the Tower of Hanoi puzzle with p posts (p >= 3) and n disks (n in N). We examine the puzzle in the context of a cluster space: a hierarchical partitioning of the space of all possible disk ... -
Temporal Treemaps for Visualizing Time Series Data
(2004-05-12)Treemap is an interactive graphical technique for visualizing large hierarchical information spaces using nested rectangles in a space filling manner. The size and color of the rectangles show data attributes and enable ... -
A Lattice Kinetic Scheme with Grid Refinement for 3D Resistive Mangetohydrodynamics
(2004-05-26)We develop, analyze, and numerically test a 3D lattice kinetic scheme for the resistive magnetohydrodynamic (MHD) equations. This scheme is based on the square D3Q19 lattice for the fluid and the square D3Q7 lattice for ... -
Performance Analysis of a Multi-Class, Preemptive Priority Call Center with Time-Varying Arrivals
(2004-06-08)We model a call center as a an $M_{t}/M/n$, preemptive-resume priority queue with time-varying arrival rates and two priority classes of customers. The low priority customers have a dynamic priority where they become high ...