Computer Engineering Commons^™

How To Define A Confidence Set For Functions: A New Justification Of The Area Method, Vladik Kreinovich, Gang Xiang, Michael Oberguggenberger

Departmental Technical Reports (CS)

Due to uncertainty, in many problems, we only know the probability of different values. In such situations, we need to make decisions based on these probabilities: e.g., we must tell the user which values are possible and which are not. Often -- e.g., for a normal distribution -- the probability density is everywhere positive, so, theoretically, all real values are possible. In practice, it is usually safe to assume that values whose probability is very small are not possible. For a single variable, this idea is described by a confidence interval C, the interval for which the probability to be …

Femprof: Advancing Females To The Professoriate In Computing, Nestor J. Rodriguez, Richard A. Alo, Sarah Hug, Sangeeta Gad, Nayda Santiago, Gladys O. Ducodray

Departmental Technical Reports (CS)

Considering both the percentage of science and engineering PhDs awarded to women in the twenty year period 1974-2004 and the data from the National Science 2006 Survey of Earned Doctorates 1974-2004, the U.S. National Academies noted that women in 2004 have attained equality with men in their representation in the Social Sciences and Life Sciences but are still lagging in Physical and Computing Sciences and Engineering. In the top 50 engineering departments in the U.S., women earn one-fourth of the PhDs granted in Chemical Engineering and 15% in engineering overall (Handelsman et al, 2005). Although women constitute about half of …

Touch Screen Sound Controller, James Fenley, Jonathan Law

Electrical Engineering

The Touch Screen Sound Controller sets out to explore the use of a touch screen as a sound control interface for the disk jockey profession. In addition, the project aims to provide an alternate means of transferring audio data by way of TCP/IP communications as opposed to MIDI. By applying our method, a user may stream pulse-code modulated data from a server onto a client’s RAM via an Ethernet connection. A 32bit, 200MHz ARM9 microprocessor addresses data from the RAM and proceeds with executing DSP instructions from the user. The connection between the touch screen and the central microprocessor is …

Nexys 2 Slot Machine, Mark Luna

Computer Engineering

No abstract provided.

Ultrasonic Shark-Tag Locator System For Iver2 Auv, Nathaniel Garcia

Computer Engineering

The purpose of this project is to develop a system for tracking an ultrasonic underwater transmitter that can be integrated into an IVER2 AUV to allow it to follow and monitor tagged sharks in the ocean for scientific research.

The system consists of a four main components including a shark-tag, two hydrophones, a filter/amplifier & threshold detector circuit, and a microcontroller.

This project, while not completing field testing and integration with the IVER2, is a proof of concept of a system that utilizes passive sonar to determine a bearing from the system to a shark-tag transmitter. Additionally, it devised several …

A Low Power Touch Screen Document Viewer, Chris Perfetto

Computer Engineering

This document will cover the requirements, design, implementation and testing of a low power touch screen document viewer to serve as a replacement bulletin board. It was Implemented using a BeagleBoard development board, a 4.3” touchscreen LCD and a SD card with a Ubuntu Linux OS installed. The testing of this device is primarily testing the power consumption. The device is not yet complete and will require further development for it to completely satisfy the requirements.

Max Flow Spill Code Placement Algorithm Implemented In Gcc 4.4.3, Stephen Robert Beard

Computer Engineering

The placement of spill code plays an important role in the register allocator of an optimizing compiler. Many computer architectures possess a register linkage convention that dictates which registers are preserved across function calls and which are not. This project addresses the problem of optimizing spill code that is associated with register linkage conventions.

This algorithm was created by Dr. Chris Lupo and is described in the paper Beyond Register Allocation: a Novel Algorithm for Spill-Code Placement. The algorithm was implemented for GCC 2.5.7 for a PA-RISC architecture [4]. The work in this project will involve porting the existing code …

Characterization Of The Rfx400 For Use In Software Defined Radio, Edward Adams

Computer Engineering

While software defined radio is an extremely flexible technology that is fairly rarely used, as a single purpose radio is much cheaper, it provides an excellent means of learning RF and communications skills through the lens of digital electronics, and it would behoove a Cal Poly student interested in these areas to take on a project in software defined radio. This project aims to lower the barrier to entry for future students to undertake such a project. The use of an up-converter/down-converter is documented for future students to interface with.

Rfid Asset Tracking And Digital Check-Out System, Jeffrey (Jeff) Migliore

Computer Engineering

An asset tracking and digital check-out system was developed using Radio Frequency Identification (RFID) and a Single Board Computer (SBC). A RFID reader was used as a check point to process transactions. The RFID reader was attached to the SBC via USB. The SBC is integrated into a network via Ethernet and hosts a web graphical user interface (GUI) frontend for users to view transactions and query availability of assets. A MYSQL database was used for the backend storage of data.

Specifically, this system was designed to track tool assets. Many modern companies have employees sharing limited resources. The common …

Household Outlet Monitoring And Control System, Michael Young

Computer Engineering

No abstract provided.

Wii-Mote Head Tracking: A Three Dimensional Virtual Reality Display, David Fairman

Computer Engineering

The goal of this project is to create a customizable three dimensional virtual reality display on a system available to any non-technical user. This System will use the infrared camera component of a standard Nintendo Wii-mote to track a user's head motions in all six major directions. The virtual reality will be a customizable image projected onto a screen or simply shown on a computer or TV monitor. In order to appear 3-dimensional, the image will continually change according to the position of the user's head. As the user moves their head to the left and right, portions of the …

Independent Set On Graphs With Maximum Degree 3, Iyad A. Kanj, Fenghui Zhang

Technical Reports

Let G be an undirected graph with maximum degree at most 3 such that G does not contain either of the two graphs shown in Figure 1 as a subgraph. We prove that the independence number of G is at least n(G)/3 + nt(G)/63, where n(G) is the number of vertices in G and nt(G) is the number of nontriangle vertices in G. We show an application of the aforementioned combinatorial result to the area of parameterized complexity. We present a linear-time kernelization algorithm for the independent set problem on graphs with maximum degree at most 3 that computes a …

Http 1.2: Distributed Http For Load Balancing Server Systems, Graham M. O'Daniel

Master's Theses

Content hosted on the Internet must appear robust and reliable to clients relying on such content. As more clients come to rely on content from a source, that source can be subjected to high levels of load. There are a number of solutions, collectively called load balancers, which try to solve the load problem through various means. All of these solutions are workarounds for dealing with problems inherent in the medium by which content is served thereby limiting their effectiveness. HTTP, or Hypertext Transport Protocol, is the dominant mechanism behind hosting content on the Internet through websites. The entirety of …

Digital Signaling Processor Resource Management For Small Office Phone Systems, John T. Gilkeson

Master's Theses

Contemporary small office phone systems are specialized computers that connect a variety of phones within the office and to the local phone company. These systems use digital signaling processors (DSPs) to convert signals from analog to digital and vice-versa. Many different types of applications run on the DSPs and different businesses have varying application needs. Given the systems have limited amounts of DSP resources and growing numbers of applications for a phone system, an administrator needs a way to configure the uses of resources based on their individual business needs.

This thesis provides an overview of a system for configuring …

Monocular Vision And Image Correlation To Accomplish Autonomous Localization, Matthew Paul Schlachtman

Master's Theses

For autonomous navigation, robots and vehicles must have accurate estimates of their current state (i.e. location and orientation) within an inertial coordinate frame. If a map is given a priori, the process of determining this state is known as localization. When operating in the outdoors, localization is often assumed to be a solved problem when GPS measurements are available. However, in urban canyons and other areas where GPS accuracy is decreased, additional techniques with other sensors and filtering are required.

This thesis aims to provide one such technique based on monocular vision. First, the system requires a map be generated, …

Textured Hierarchical Precomputed Radiance Transfer, Harrison Lee Mckenzie Chapter

Master's Theses

Computing complex lighting simulations such as global illumination is a computationally intensive task. Various real time solutions exist to approximate aspects of global illumination such as shadows, however, few of these methods offer single pass rendering solutions for soft shadows (self and other) and inter-reflections. In contrast, Precomputed Radiance Transfer (PRT) is a real-time computer graphics technique which pre-calculates an object's response to potential incident light. At run time, the actual incident light can be used to quickly illuminate the surface, rendering effects such as soft self-shadows and inter-reflections. In this thesis, we show that by calculating PRT lighting coefficients …

Design And Usability Of Social Networking Web Sites, Robert Pessagno

Graphic Communication

This study began by designing the layout of a new social networking Web site and putting it to practical use. A team of computer science students at Cal Poly developed this social networking site for their senior project, and called it Friend Riot. The new and innovative features that Friend Riot consists of set it apart from other popular social networking Web sites, but its interface was lacking a good design. When the new design was implemented, it was tested against the competition: Facebook, MySpace, and YouTube.

The purpose of this study is to determine the effects that Web design …

Memento: Personal Scrapbook Android Application, Ryan Joseph Rosete

Computer Engineering

The Memento project focuses on providing Android phone users with a new alternative to capture memories. Its main purpose is to create an application that stores pictures and data on an Android phone. Users can view these saved entries for later use to recall what they have done in the past or show to others. The initial idea for this project stemmed from a personal interest in both scrapbooks and popular microblog services. The application aims to provide a new service that is currently not offered in the Android Market.

In order to create this application, there are two main …

Ofdm Simulation In Matlab, Paul Guanming Lin

Electrical Engineering

The objective of this project is to demonstrate the concept and feasibility of an OFDM system, and investigate how its performance is changed by varying some of its major parameters. This objective is met by developing a MATLAB program to simulate a basic OFDM system. From the process of this development, the mechanism of an OFDM system can be studied; and with a completed MATLAB program, the characteristics of an OFDM system can be explored.

Uav Pirates And Silentrack Integration, Travis Dean, Hushnak Singh, Ashley Wager, Matthew (Matt) Woolridge

Electrical Engineering

The integration of the UAV pirating system with the SilenTrack video tracking system will allow the combined system to automatically identify and track a suspicious air vehicle visually as well as identify and decode the RF control signal. Once a threat has been identified, the system will execute an algorithm to associate each control channel with the corresponding flight control surface. Once the control channels have been decoded the user can use a hand held radio controller to maneuver the drone which is now under their command.