Computer Engineering Commons^™

A Workload Balanced Mapreduce Framework On Gpu Platforms, Yue Zhang

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The MapReduce framework is a programming model proposed by Google to process large datasets. It is an efficient framework that can be used in many areas, such as social network, scientific research, electronic business, etc. Hence, more and more MapReduce frameworks are implemented on different platforms, including Phoenix (based on multicore CPU), MapCG (based on GPU), and StreamMR (based on GPU). However, these MapReduce frameworks have limitations, and they cannot handle the collision problem in the map phase, and the unbalanced workload problems in the reduce phase. To improve the performance of the MapReduce framework on GPGPUs, in this thesis, …

Design Of A Novel Low - Cost, Portable, 3d Ultrasound System With Extended Imaging Capabilities For Point-Of-Care Applications, Michail Tsakalakis

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Ultrasound Imaging (USI) or Medical Sonography (MS), as it is formally called, has been widely used in biomedical applications over the last decades. USI can provide clinicians with a thorough view of the internal parts of the human body, making use of sound waves of higher frequencies than humans can perceive. USI systems are considered highly portable and of low-cost, compared to other imaging modalities. However, despite those advantages, Ultrasound Systems (US) and especially 3D ones, have not been yet extensively utilized for Point-of-Care (POC) applications, due to numerous restrictions and artifacts that they currently present.

Hardware complexity and real-time …

Mobile Audiometry Application, Kevin Nguyen, Shweta Panditrao

Interdisciplinary Design Senior Theses

The Mobile Audiometry Application hopes to utilize the ubiquity of the mobile device by providing a means of healthcare focused on audiometry. This application enables a mobile device to perform audiometric testing to detect a user's hearing range, and notify the user whether he or she is suffering from hearing loss. This project seeks to fulfill a social need for increased access to hearing testing by providing a portable, affordable, and reliable screening tool that is accurate. The result was sleek application that provided a calibration method, executed an audiometry test using accurate and calibrated files, displayed the results graphically, …

Legacy Borehole Project, Maza Brady, Luke Cashman, Erin Hicks, Meghan Richey

Interdisciplinary Design Senior Theses

The Legacy Borehole Project is a three-year effort to design and build a sensor package that will be used to explore the geological and chemical conditions of the ocean floor. Over the course of three years, a mechanical structure and a robotic system will be constructed to lower sensors into previously drilled boreholes. As the team responsible for the development of the first year of this project, we have constructed a prototype sensor package and mock mechanical structure to test a communication interface between the sensors and a graphical user interface. The sensors were tested by lowering the sensor package …

Distributed Smart Camera Network For Safety And Security, Nathan Fox, Matthew Kelley, Christopher Rapa, Christopher Yarp

Interdisciplinary Design Senior Theses

Current CCTV surveillance solutions are generally retrospective tools. Because real time use of CCTV requires human monitors to view a potentially exorbitant number of video feeds, CCTV is usually only useful after an incident has occurred. However, new technologies are making it possible for machines to perform some tasks that previously required a human monitor. The proposed project seeks to augment existing CCTV systems with behavioral analytics. The system uses a series of cameras, FPGAs, and computers to track object movement throughout a facility. This information is used to build a model of normal movement. Object movements are compared against …

Arsenic Detection Project: Electronics, Anthony Clemetson, John Barth

Interdisciplinary Design Senior Theses

This project is a collaboration with a team of bioengineers to adapt the functionality of laboratory equipment onto a platform which could be used in the field to determine the concentration levels of toxins in ground water. To this end, using a set of printed electrodes, a device was designed and fabricated with the constraints of field use in mind: low power, low cost, with a mobile user interface. An Android phone served as the mobile user interface, and also as the power supply for the circuit and microcontroller that performed the test. This circuit applied a stimulus voltage across …

Combating Integrity Attacks In Industrial Control Systems, Chad Arnold

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Industrial Control Systems are vulnerable to integrity attacks because of connectivity to the external Internet and trusted internal networking components that can become compromised. Integrity attacks can be modeled, analyzed, and sometimes remedied by exploiting properties of physical devices and reasoning about the trust worthiness of ICS communication components.

Industrial control systems (ICS) monitor and control the processes of public utility that society depends on - the electric power grid, oil and gas pipelines, transportation, and water facilities. Attacks that impact the operations of these critical assets could have devastating consequences. The complexity and desire to interconnect ICS components have …

Dynamic Cache Partitioning For Multi-Core Systems, Yang Zhang

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As the power consumption (power wall) is limiting the clock frequency increase, multi-core and many-core processors become the major-trend of the new generation of processors. One of the biggest challenges to achieve high performance in multi-core systems is the growing disparity between processor and memory speeds. The "memory wall"' problem, i.e., the growing disparity of speed between the processor and the memory, becomes even more serious in the multi-core systems. Caches have been highly successful in bridging the processor-memory performance gap by providing fast access to frequently used data. Caches also save power by limiting expensive off-chip memory accesses. In …

Mining And Understanding Regret Tweets, Lu Zhou

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Inappropriate tweets may cause severe damages on the authors' reputation or privacy. However, many users do not realize until publishing them after a while. Once published, such tweets have lasting effects that may not be completely eliminated by simple deletion, because other users may have read them or third-party tweet analysis platforms have cached them. In this paper, we study the problem of identifying regret tweets for normal individual users, with the ultimate goal to reduce the occurrences of regret tweets. We develop a machine learning approach to extract a large collection of regret tweets from noisy deleted tweets. We …

Amyna: A Security Generator And Performance Estimator Framework Against Memory-Based Attacks, Anna Trikalinou

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As we become more and more dependent on computer networks, using them for everything from banking and investing to shopping and communicating, computer security has emerged to be an increasingly important concern, due to undesirable cyber-security attacks. Thus, in response to this issue many efforts have been made towards accurate and robust computer security protection; however, the general problem is very challenging, diverse and ever-changing and remains still open. In this PhD dissertation we offer protection on one of these cyber-security attacks, the memory-based attacks, caused by one of the most critical software errors according to the MITRE ranking. When …

A Context-Driven Subgraph Model For Literature-Based Discovery, Delroy Huborn Cameron

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Literature-Based Discovery (LBD) refers to the process of uncovering hidden connections that are implicit in scientific literature. Numerous hypotheses have been generated from scientific literature using the LBD paradigm, which influenced innovations in diagnosis, treatment, preventions and overall public health. However, much of the existing research on discovering hidden connections among concepts have used distributional statistics and graph-theoretic measures to capture implicit associations. Such metrics do not explicitly capture the semantics of hidden connections. Rather, they only allude to the existence of meaningful underlying associations. To gain in-depth insights into the meaning of hidden (and other) connections, complementary methods have …

3-D Scene Reconstruction From Line Correspondences Between Multiple Views, Michael Linger

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Three-dimensional scene reconstruction from 2-D images has many applications, such as surveillance, mission planning, autonomous navigation systems, cartography, and target recognition. Of specific interest to this research is the reconstruction of urban scenes containing man-made structures, such as roads and buildings, to support the burgeoning surveillance industry. Using 3-D maps to augment existing mission planning cartography products (DTED/SRTM, CADRG, CIB), mission and event planners will be able to compute strategic line-of-sight coverage for threat avoidance or threat prosecution. Forensic video analysts can use these models to recreate crime scenes, while law enforcement can build flight plans to minimize occlusions from …

Project Omoverhi : Low-Cost, Neonatal Incubator, Richard Fong, Guillermo Gallardo, William Jeffery, Danny Maeda, Gabriel Romero

Interdisciplinary Design Senior Theses

Project Omoverhi, since its beginning in 2010-2011, has been focused on creating an incubator that has the capability of operating completely off grid. This year the project has been focused on redesigning the original system to reduce the cost to approximately $1000. In addition to this we have designed and implemented a control system that enables the user to set a desired temperature which can be maintained to within 1 degree Celsius. Before the project is able to be completed further work must be done. The thermal storage system that was initially proposed by the original team still needs to …

Wireless Impact Detection System, Shawno Auwae, Kyle Terriere

Interdisciplinary Design Senior Theses

Recently, brain trauma caused by multiple concussions has become a pressing issue for contact sports, mainly American football players. The severity of the impacts in these sports have led to discussion concerning the standard safety equipment used, as well as the rules enforcing a certain style of play. Multiple studies have shown that concussions have damaging long-term effects, including dementia and memory loss. The dominant professional football organization, the National Football League (NFL), employs qualified athletic trainers to diagnose and treat players with concussions, but many incidents still go undetected. This problem is magnified at the youth level, where the …

Dynamic Poverty Heat Map, Jonathan Ahumada, Kurt Jurgens, Jasmine Farias

Computer Science and Engineering Senior Theses

Data management and analysis can become an overwhelming task when having to deal with large amounts of data. Fundación Paraguaya (FP), an organization that aims at reducing poverty in Paraguay, currently has been facing this data readability issue. The data from electronic surveys conducted by FP to measure poverty levels in different areas of Paraguay are currently presented in a complex and overwhelming manner via Excel spreadsheet. This method of data representation increases the risk of committing errors, as well as slows down the process of efficiently locating the areas of greatest needs and allocating the resources to these areas. …

An End To End-To-End? A Review Essay Of Barbara Van Schewick’S Internet Architecture And Innovation, Adam Candeub

Federal Communications Law Journal

Amidst much controversy, the FCC released its landmark "network neutrality" order in December 2010. This regulation prohibits Internet service providers, such as Verizon or Comcast, from discriminating in favor of traffic or content that they own or with which they are affiliated. Professor Barbara van Schewick's recently published book, Internet Architecture and Innovation, could not be timelier. Employing a variety of economic and technical arguments, van Schewick defends the type of regulation the FCC passed as necessary to preserve the Internet's potential for innovation. My central critique of Internet Architecture is its deployment of economic theories on one side of …

Cloudvista: A Framework For Interactive Visual Cluster Exploration Of Big Data In The Cloud, Zhen Li

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With the development and deployment of ubiquitous information sensing, mobile devices,wireless sensor networks, RFID readers, simulation, and computer generated software logs, big data have become precious resources for scientific study, business intelligence, and national security. As one of the most intuitive and effective analysis methods,visual cluster analysis remains as a significant challenge for big datasets. First, existing visualization models need to be updated to process big data in parallel. Second, processing big data inevitably bring large latency, which conflicts the requirement of interactivity. In this thesis, we develop the CloudVista framework to address the common problems with data reduction methods …

Production Of A Video Tape Recorded Supplement For Use In Teaching Electrical Tuned Circuit Theory, William A. Carlson

All Master's Theses

This paper presents a sample of the proceedures utilized to produce a video tape recorded suppliment for use in teaching electrical tuned circuit theory. It is designed so that it could be used as a ready reference for anyone desiring to make a video tape recorded teaching aid. A recomendation is that, with the advent of the simplified video tape recorder, every teacher should become as practiced in its operation and utilization as he now is with the film projector.