Digital Communications and Networking Commons^™

Exploiting Temporal And Spatial Correlation In Wireless Sensor Networks, Daniel Parker

Electrical and Computer Engineering Master's Theses

Collecting data continuously from Wireless Sensor Networks (WSNs) with limited power and bandwidth is a challenging problem. Such networks have potential utility in a wide range of disciplines such as medical, industrial, environmental, and military applications. For long-term monitoring and surveillance applications, the objective is often times to cover as large an area as possible while still acquiring high-resolution information about the sensed environment. The main challenges involve energy-efficiency and scalability of the techniques used to acquire the substantial amount of data from the sensor network. Addressing these challenges, we propose a method that effectively exploits both spatial and temporal ...

Automatic Detection Of Abnormal Behavior In Computing Systems, James Frank Roberts

Theses and Dissertations--Computer Science

I present RAACD, a software suite that detects misbehaving computers in large computing systems and presents information about those machines to the system administrator. I build this system using preexisting anomaly detection techniques. I evaluate my methods using simple synthesized data, real data containing coerced abnormal behavior, and real data containing naturally occurring abnormal behavior. I find that the system adequately detects abnormal behavior and significantly reduces the amount of uninteresting computer health data presented to a system administrator.

Design And Implementation Of A Hybrid Technology Networking System, Sushanta Mohan Rakshit

Dissertations & Student Research in Computer Electronics & Engineering

The safety of rail transport has always been the top priority for the Federal
Railroad Administration (FRA). Legacy technology, like wayside monitoring, is still
in place and is largely relied upon for detection of faults. Modern technology like
Radio Frequency Identification (RFID) has been introduced recently. However, this
is largely used to detect a particular railcar rather than to monitor it for problems.
Wireless Sensor Network (WSN) technology is being evaluated by the railroads for real-time or near real-time monitoring of the status of railcars for timely response to problems and also for trend analysis.

ZigBee has been the networking ...

Rolling In The Deep, Dark Web: Advanced Internet Searching, Anne Burnett

Continuing Legal Education Presentations

Shares effective search strategies to improve search engine results and discusses efforts to capture and index more of the deep web for retrieval.

Don't Panic: The Lawyer’S Guide To Making Your Own Mobile App, Jason Tubinis

Continuing Legal Education Presentations

Provides overview of steps used to create a personal mobile app.

Appapalooza: Valuable Legal And Productivity Apps For Your Smart Phone Or Tablet, Tj Striepe

Continuing Legal Education Presentations

Presents helpful tools and programs to make legal research and general office work more efficient and portable.

To Internet Or Not To Internet: Ethics Opinions On Internet Usage, Sharon Bradley

Continuing Legal Education Presentations

Considers the ethical implications of using email to communicate with clients, using cloud storage for legal files, and tracking people related to a case via the Internet . Highlights recent state bar ethics committee decisions.

Finding A Virtual Trail: Investigative Research On The Web, Suzanne R. Graham

Continuing Legal Education Presentations

Provides tips and resources for finding information about people and businesses on the Internet. Focuses on finding vital data, asset information, and criminal history.

Maximize Your Decision-Making: A Review Of Emerging Technology Trends, Carol Watson

Continuing Legal Education Presentations

Provides overview of new technologies (both software and hardware) that could become the "next big thing."

Repeated Selfish Routing With Incomplete Information, He Yu

Open Access Dissertations and Theses

Selfish routing is frequently discussed. The general framework of a system of non-cooperative users can be used to model many different optimization problems such as network routing, traffic or transportation problems.

It is well known that the Wardrop user equilibria (i.e. the user optima) generally do not optimize the overall system cost in a traffic routing problem.

In order to induce the equilibrium flow to be as close to the optimal flow as possible, the term “toll” is introduced. With the addition of tolls, a traffic system does not show the actual cost to the users but the displayed ...

Prototype Design And Network Protocols For Wireless Energy Harvesting Sensors, Prusayon Nintanavongsa

Electrical Engineering Dissertations

Radio frequency (RF) wireless energy transfer and energy harvesting from external sources promise a battery-free paradigm for resource constrained wireless sensor networks (WSNs). The objective of this thesis is to advance the engineering of these energy harvesting components interfaced with off-the-shelf motes and formulate the design of higher layer link and routing protocols for a WSN composed of such motes. The specific contributions of the thesis include: (i) optimization and implementation of RF energy harvesting circuits, (ii) medium access control protocol for scenarios with multiple energy transmitters, (iii) cross-layer protocol design that includes joint duty cycle determination and routing, and ...

Self-Calibrated Wireless Sleep Sensing System For Brain Injury Diagnostics, Ali Abedi, Frederick Schwaner, E Mougharbel, M J. Hayes

WiSe-Net Laboratory

A wide range of conditions fall under the category of Mild Traumatic Brain Injury (mTBI) diagnosis. In this article, we focus on a new method during sleep to detect mTBI associated with neuro-cognitive impairment that is not apparent using standard neuro-imaging methods. A wireless pressure sensor system comprising a piezo-resistive flexible substrate paired with a microcontroller and a radio is designed and built to provide information relevant to mTBI detection. The collected information is then processed with a software program to remove noise and interference, and detect both sleep states and cardio-respiratory movements.

Wireless Sensors Without Batteries, Ali Abedi

WiSe-Net Laboratory

No abstract provided.

An Ultra-Low Power Communication Protocol For A Self-Powered Wireless Sensor Based Animal Monitoring System, Tao Ma

Dissertations & Student Research in Computer Electronics & Engineering

To prevent and control the outbreak of contagious animal disease, many countries have developed animal identification and tracking systems. However, the current animal identification and tracking system, which is based on passive RFID technology, has many limitations such as the short communication range and incapability of automatically monitoring the animal. To overcome these limitations, our Advanced Telecommunications Engineering Laboratory (TEL) in Department of Computer and Electronics Engineering (CEEN), University of Nebraska-Lincoln took the mission of developing a more advanced monitoring system for animal identification and tracking. This dissertation work as a part of this mission was focusing on developing an ...

Analysis Of Slotted Aloha With Multipacket Messages In Clustered Surveillance Networks, Soumya Sen, David J. Dorsey, Roch A. Guérin, Mung Chiang

Departmental Papers (ESE)

This work presents an analysis of a cluster of finite population of low cost sensor nodes operating in a p-persistent S-Aloha framework with multipacket messages. Using this analytical framework, we consider the issue of partitioning the nodes and available frequencies into groups so as to maximize the system throughput. Assigning the nodes and frequencies into “groups” is important because the size of the group impacts the tradeoff between the benefits of frequency diversity and the cost of collision on the shared medium imposed by the nodes in a group. We study this tradeoff through analytical and numerical results and ...

Is Tech M&A Value-Additive?, Ani Deshmukh

Undergraduate Economic Review

Given rising M&A deal volume across all high-tech subsectors, the ability to measure post-acquisition performance becomes critical. Despite this growth, the relevant academic literature is severely lacking (Kohers and Kohers 2000). Using an event-study approach, I find that acquirers and targets both realize statistically significant day-0 abnormal returns (1.23% [p<0.1] and 8.1% [p<0.01], respectively). As positive stock returns signal positive growth prospects in a semi-strong efficient market, AR regressions found that firms' technological relatedness, deal financing, purchase price premiums, and the relative book to market ratio, explained most variance. Overall, high-tech transactions are value-additive for both targets and acquirers.

Security Aspects Of Smart Grid Communication, Pubudu E. Weerathunga

Electronic Thesis and Dissertation Repository

As the grid becomes highly interconnected, power protection, control, and monitoring in transmission and distribution substations are increasingly relying on digital controls and digital communication. Rapid penetrations of communication into power grid, and growing concerns about cyber security have attracted significant attention towards smart grid cyber security. Cyber security in the smart grid must be carefully designed to meet power system operation’s functional and reliability requirements.

This thesis discusses issues related to the security of power system communication and their counter measures. It focuses on development of security mechanisms for secure substation communication, and analyzes the impact of security ...

Using Complex Adaptive Systems And Technology To Analyse The Strength Of Processes And Cultural Indicators: A Method To Improve Sustained Competitive Advantage, E Ehmann, Nigel Houlden, Vic Grout

Computing

This paper generalises and strengthens the investigation of capturing intangible data for the benefit of organisations encouraging learning environments and self-organisation practices. It suggests current technological and algorithmic analysis may aid an organisation’s quest for sustained competitive advantage through the identification of previously unobservable data including cultural nuances. However, the implementation of such an approach presents challenges of which we summarise in our conclusion.

Frg Turbojet, Tyler Vitti

Computer Engineering

Members of the Cal Poly SLO campus club FRG work together with students of several different disciplines to build a functional turbojet engine. Engineering approaches include design, fabrication, testing, and computer sensing, control, and integration. The goal of the project is to produce a running turbojet engine monitored and controlled by embedded hardware and specialized PC software. This project is to be used by later groups for further research and development.

Wireless Ad Hoc Networks For Mobile Devices Via High Frequency Sound Waves, Yashar Bahman

Computer Engineering

The purpose of this research it to give mobile phones the ability to create a cross-platfor wireless ad-hoc network. To accomplish this the phone’s speaker/microphone will be treated as a modulator/demodulator (or modem for short). The idea is that the phone will generate sine waves at various frequencies to output them on the speaker on one end and also record audio with the microphone to analyze and decode it into data on the other.

Once complete, these functionalities will all be rolled up into one easy to use library named Wave, which can be used to send ...