Engineering Commons^™

Folded Meandered Monopole For Emerging Smart Metering & M2m Applications In The Lower Uhf Band Primary Tabs, Abraham Loutridis, Matthias John, Max Ammann

Conference Papers

A compact folded meander-line monopole for smart metering and M2M applications is presented. It operates over a tunable frequency range of 412-475 MHz. The miniaturization is based on a double-sided meandering structure and the rear positioning of the feeding and shorting strips. A sliding via connector is used for tuning. The proposed antenna is compact 15 mm (0.02 λ0) × 42.3 mm (0.058 λ0), low cost and easily fabricated. A 21-24% total efficiency was provided across the tunable band. Installed performance was evaluated in a meter housing placed on a concrete wall. Measured and simulated results are provided.

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• IT faculty and CEIT Service Manager win Patriot Awards

Science-Informed Arguments In Undergraduates’ Opinions About Biofuels, Olivia Straka, Jenny Dauer

UCARE: Research Products

Socioscientific issues (SSIs) are complex, multifaceted issues with components of science as well as components of values requiring evaluation of social, political, and ethical concerns (Nichols & Zeidler, 2009). • However, many students do not possess a fundamental understanding of the underlying scientific foundations of SSIs (NRC, 1998), or may evaluate issues based on personal relevance as opposed to contemplation of evidence presented (Sadler et al., 2004). • This study examined how undergraduate students chose to substantiate their opinions on the SSI of using biofuels as a fuel source before and after taking a semester long course, AGRI/NRES 103. • …

Heating Element Including Carbon Nanotube (Cnt) Layer, Santhosh Kumar Loganathan, Virginie Rollin, Daewon Kim

Publications

Apparatus , materials , and techniques and techniques herein can include providing a deposited layer comprising a com posite material including carbon nanotubes ( CNTs ) . Accord ing to various examples , the composite can be applied to a substrate such as using a solution containing CNTs and other constituents such as sulfur . The solution can be spray applied to a substrate , or spin - coated upon a substrate , such as to provide a uniform , conductive , and optically - transpar ent film layer . In one application , such a film layer can be …

Conference Program, Engineering Conferences International

CO2 Summit II: Technologies and Opportunities

No abstract provided.

Small Scale Water Filtration Project, Elaine Yang, Lang Ming, Alex Tees, Lauren Galle, Tristan Coffey, Andria Tattersfield, Colin Brock

PSU High School Innovation Challenge

Access to clean drinking water is a large problem that our world is facing today. Consuming contaminated water can lead to the spread of water-borne illnesses. Populations without the security of water struggle to develop, as seen predominately in Africa. As Oregonians prepare for life after a major earthquake which could devastate the infrastructure that delivers clean water to our homes, a water filtration system should be part of a family’s emergency preparedness plan.

There are a large variety of processes for achieving fresh water. Combining all of the necessary components to lead to clean water is a complex process, …

De La Salle Sensor, Shayla Adams, Geraldine Hernandez, Gloria Joseph, Elias Taylor, Elli Cooney

PSU High School Innovation Challenge

There is a huge amount of water being wasted and with climate change causing widespread water shortages, it is important that the people of Portland become more water conscious. With the our product, it will help you become aware of your water bill and the amount of water you use with a built in calculator.

Puddl: Gamifying Water Conservation, Quince Assenberg, Jack Chen, Denny Glenn, Jessica Lam

PSU High School Innovation Challenge

As the global population surges, the demand for fresh water will only increase. With no technological breakthrough on the horizon, it is more important than ever to conserve water and not waste this precious resource. Water conservation is a serious issue, and will only become more severe as global warming worsens. As the global temperature increases, and rainfall becomes more sporadic, it will be important for communities to find new ways to save water. This push has already been made in certain areas in the united states, California, where they were forced to reduce their water consumption by 25%.

Through …

Larc: Local Agricultural Resource Conservation, Dash Justice, Josh Davis, Sid Crumble, Ashlie Kinney

PSU High School Innovation Challenge

In America today, over 75% of the nation’s water is used in the irrigation of agriculture. The main users -- and abusers -- of water in the United States are farmers. In addition, many areas in the U.S. are facing drought conditions, especially in western states. Also, while the drought conditions in California are receding, water shortage as an issue demands a long term solution.

Isolated Water Circulation And Filtration System, Adrik Gurganus, Mellonie Mwawai, Wysteria Cedillo-Nielsen, Morgan Rekart, Zander Hoffman

PSU High School Innovation Challenge

One big issue we are addressing is the large amount greywater produced by average households around the country. Still, the main problem is that, in areas affected by drought such as California, people have little available clean water, and this system will greatly benefit these people directly. The Isolated water system uses a filtration combined of organic materials, soaps, dirt, foods and sink to filter out the grey used water. Since the water system is not connected with the local water system if there were a natural disaster the owner would have free access to a water source while the …

Residential Greywater Recycling System, Sophia Bui, Clare Clark, Anthony Hoang, Kim Le, Skyler Mishler, Janette Soler, Teresa Tran

PSU High School Innovation Challenge

In a typical household, a majority of the fresh water is utilized by the shower, bathroom sinks and laundry. Water exiting from these fixtures is considered greywater. This is wasteful because the greywater is being combined with blackwater making it unusable. If greywater could be separated and captured, it can be reused for other purposes. We came to the conclusion that greywater is able to be recycled and reused for flushing excreta.

A Genetic Approach To Designing A Novel Biological Sensor To Monitor Water Contamination, Cynthia Bui, Anissa Rosbaugh, Israel Gonzalez, Julie Lu, Colin Kuhns, Joel Crandall, Alyssa Faulk, Miriam Nguyen

PSU High School Innovation Challenge

Many cities across the country have experienced extreme water problems. The City of Portland has issued several water boiling advisories due to E. coli contamination. Additionally, there has been incidents of serious contaminants like lead leaching in water systems (Flint, Michigan). The Portland Water Bureau does not use a water treatment plant due to the quality of our water sources; a chlorination plant is used to chlorinate the water from the Bull Run Watershed (our main water source). Not having a water treatment plant makes Oregon more prone to a prolonged absence of potable water should the supply be contaminated. …

Aqua Band, Jessica Peterson, Sam Behrens, Michael Desimone, Aiden Nelson, Alexandra Leamy

PSU High School Innovation Challenge

People drown all of the time. Whether it's a young child playing in the river or a college student partying on a boat, there is always the danger of drowning. It is not always easy to tell if somebody is drowning. If you are a parent, you won’t always be watching your kids. When you look away and they start drowning, there is no safe way to be alerted of your child’s situation.

A Hybrid Key Management Scheme For Wsns Based On Ppbr And A Tree-Based Path Key Establishment Method, Ying Zhang, Jixing Liang, Bingxin Zheng, Wei Chen

Computer Science Faculty Research

With the development of wireless sensor networks (WSNs), in most application scenarios traditional WSNs with static sink nodes will be gradually replaced by Mobile Sinks (MSs), and the corresponding application requires a secure communication environment. Current key management researches pay less attention to the security of sensor networks with MS. This paper proposes a hybrid key management schemes based on a Polynomial Pool-based key pre-distribution and Basic Random key pre-distribution (PPBR) to be used in WSNs with MS. The scheme takes full advantages of these two kinds of methods to improve the cracking difficulty of the key system. The storage …

Renewable Energy Investment Planning And Policy Design, Alireza Ghalebani

USF Tampa Graduate Theses and Dissertations

In this dissertation, we leverage predictive and prescriptive analytics to develop decision support systems to promote the use of renewable energy in society. Since electricity from renewable energy sources is still relatively expensive, there are variety of financial incentive programs available in different regions. Our research focuses on financial incentive programs and tackles two main problem: 1) how to optimally design and control hybrid renewable energy systems for residential and commercial buildings given the capacity based and performance based incentives, and 2) how to develop a model-based system for policy makers for designing optimal financial incentive programs to promote investment …

Mems Based Tracking Devices For Measuring Distribution Hazards On The Product And Package, Changfeng Ge, Tom Oh, Daniel Johnson, Anthonio Mondragon, Kai Lei

Journal of Applied Packaging Research

This paper introduces two microelectromechanical systems (MEMS) based working data logger prototypes and the cloud based data analysis system that were trademarked and patented as Pak-Track^TM-I and Pak-Track^TM-II. The Pak-Track^TM-I is designed to wirelessly record and report information in real time about individually packaged products during transit. The system allows the user to immediately view the data with a Global Positioning System (GPS) location via a secured website or Android tablet or smart phone. The Pak-Track^TM-II is a standalone device that stores all measurements on internal memory without communicating over a network. …

Effect Of Packaging Material On Color Properties Of Catsup Tomato Sauce, Naser Kohan-Nia, Babak Pakbin, Razzagh Mahmoudi, Omid Fakhri

Journal of Applied Packaging Research

Catsup and tomato sauce products currently are one of the most popular and commercially available table sauces particularly consumed by young people and families around the world in recent decades. In this study colorimetric properties of catsup sauce samples including L*, a* and b* values in different packaging materials including PP, PE, PET, Glass and Sachet have been investigated during and after 180 days storage time at 22̊ C (environmental temperature). Hunter Lab system has been used to evaluate the color values of sauce samples. According to obtained results of experimental measurements and sensory evaluations, PP and PE packaging materials …

Decision Making Framework Using Probabilistic Pareto For Sustainable Packaging Life Cycle Assessment, Euihark Lee, Huihui Qi, Hae Chang Gea

Journal of Applied Packaging Research

The Packaging industry is one of the largest industries in the world and is associated with many environmental concerns. To reduce its environmental impacts, designing sustainable packaging has been one of the top priorities in packaging industries. A common tools for evaluating the environmental impact of a package design is the Life Cycle Assessment (LCA) which provides information on environmental impacts for different indicators. However, making decisions based on the LCA results leaves us with major challenges. First, the LCA tools should consider various uncertainties such as measurement and data quality. Second, the LCA may give conflicting results on different …

Application Of Kansei Engineering To Tactile Sense In The Thai Food Wrapping Materials, Chaiwat Kittidecha, Ashuboda Chandrajith Marasinghe, Yamada Koichi

Journal of Applied Packaging Research

The paper investigates tactile attributes of food wrapping materials in Thailand based on Kansei Engineering and finds that 1) there are two major Kansei dimensions in tactile sense of food wrapping materials, 2) the emotion of "like" constitutes one of the two dimensions both with "smooth" and "natural", and 3) the most favorable wrapping material for Thai is "plastic foam" among nine different wrapping materials; plastic bag, aluminum foil, plastic film, paper, banana leaf, wax paper, plastic net, plastic air bubble and plastic foam. The study was conducted through a questionnaire that asked 6 pairs of emotions about samples; dislike …

Bending Stiffness In Cadaveric And Composite Long Bones Following Total Joint Replacement, Danielle Gehron, Anderson Adams Ms, Tatsuya Sueyoshi Md, Scott R. Small Ms

Rose-Hulman Undergraduate Research Publications

Several biomechanics studies have utilized commercially available replicate bone models as an alternative to cadaveric tissue specimens, in part due to their ease of handling and reduced expense. In an effort to validate the use of replicate bone specimens in biomechanics research, a number of studies have compared material properties of whole tibia and femur specimens to those of similar cadaveric specimens. Many of these validation studies have ascertained that the material properties of whole bone composite models fall within the range of those properties of cadaveric specimens, while offering reduced interspecimen variability. Current literature lacks, however, the direct comparison …

Modeling Of Methane Tank Depressurization In Cold Weather, Brittney Bridger-Burton, Kevin D. Cole

UCARE: Research Products

Non-metallic tanks are used in industry to store and transfer gasses such as methane. As the tanks are emptied, the properties of the gas change, causing heat transfer with the tank wall. When emptied while at low temperatures, liquid condensation can form and the tank lining can reach a critically low temperature, causing fracture to the tank wall. In this study, the emptying of methane in cold weather conditions from a non-metallic tank was modelled using Aspen Tech Software. A full tank of methane, at 250 bar and 288 K, was cooled to the following starting temperatures: 263, 253, 243, …

New Chair In Engineering & Computer Science: Kwon Is First Female Chair Of Department, Alixandria Reiner

Andrews Agenda: Campus News

No abstract provided.

Mapping Quality In Extended Value Streams Using Data Recorders, Eric Olsen, Christopher Fung, Jay Singh, Paul Singh

Industrial Technology and Packaging

This research compares three new methods and measures for mapping and evaluating the transportation segment of a value chain. The three methods are total energy, energy-time and energy-distance. The methods combine practices used in traditional physical distribution system analysis and extended value stream mapping (VSM) analysis. This research concludes that the energy-distance method and measure is the most effective for analyzing, comparing, and identifying opportunities for value chain improvement. It also identifies a ‘U-shape’ that is characteristic of the energy transfer pattern during a transportation segment that suggests that damage from transportation may need to be screened for quality at …

Mining Dynamic Recurrences In Nonlinear And Nonstationary Systems For Feature Extraction, Process Monitoring And Fault Diagnosis, Yun Chen

USF Tampa Graduate Theses and Dissertations

Real-time sensing brings the proliferation of big data that contains rich information of complex systems. It is well known that real-world systems show high levels of nonlinear and nonstationary behaviors in the presence of extraneous noise. This brings significant challenges for human experts to visually inspect the integrity and performance of complex systems from the collected data. My research goal is to develop innovative methodologies for modeling and optimizing complex systems, and create enabling technologies for real-world applications. Specifically, my research focuses on Mining Dynamic Recurrences in Nonlinear and Nonstationary Systems for Feature Extraction, Process Monitoring and Fault Diagnosis. …

Design Exploration And Application Of Reversible Circuits In Emerging Technologies, Saurabh Kotiyal

USF Tampa Graduate Theses and Dissertations

The reversible logic has promising applications in emerging computing paradigms, such as quantum computing, quantum dot cellular automata, optical computing, etc. In reversible logic gates, there is a unique one-to-one mapping between the inputs and outputs. To generate a useful gate function, the reversible gates require some constant ancillary inputs called ancilla inputs. Also to maintain the reversibility of the circuits some additional unused outputs are required that are referred to as the garbage outputs. The number of ancilla inputs, the number of garbage outputs and quantum cost plays an important role in the evaluation of reversible circuits. Thus minimizing …

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• Teresa Smith, CEIT Alumna, to Speak on April 14
• Robotics Team Wins IEEE Robotic Competition

Investigating Security Attacks On Wireless Sensor Networks (Wsns) Via An Iot Environmental Monitoring System, Mauricio Tellez Nava, Samy El-Tawab, M. Hossain Heydari

Showcase of Graduate Student Scholarship and Creative Activities

To demonstrate our work, we have implemented a secure temperature monitoring system that makes use of the IEEE 802.15.4 standard, AES-128 hardware encryption and TelosB sensor nodes. In our design, we consider one of the nodes to be a coordinator node, which plays the role of a central node that establishes network association requests, listens for incoming packets, decrypts the incoming packets and forwards any received packets to the monitoring device. Three other nodes act as end-devices, which play the role of collecting temperature measurements, encrypting the collected data and sending the encrypted packets to the coordinator node. A last …

Engineering Students’ Motivational Beliefs. Development Of A Scale Utilizing An Expectancy, Value, And Cost Framework, Mariafe Panizo

Showcase of Graduate Student Scholarship and Creative Activities

In the current study, researchers developed a 12-item instrument (Engineering Student Motivational Beliefs Scale; ESMBS) to assess engineering students’ perceived expectancies, values, and costs of being an engineering major and pursuing an engineering career. The purpose of the paper is to present the ESMBS development process, including preliminary psychometric information. Researchers used Benson’s model of construct validation, encompassing three phases, to guide the development and preliminary validation of ESMBS. The substantive phase included a thorough review of the literature to theoretically and empirically define the expectancy, value, and cost constructs within the context of undergraduate engineering. The structural phase consisted …

Dr. Idalis Villanueva Highlighted In Utah State University's Undergraduate Teaching Fellow's Blog | Eed, Usu College Of Engineering

College of Engineering News

Dr. Idalis Villanueva is a professor in the College of Engineering at Utah State University. She is a faculty mentor for the UTF program. Below, she describes her experience with the UTF program and why she believes it is helping students elevate their education. Enjoy!

Reconfigurable Battery Techniques And Systems: A Survey, Song Ci, Ni Lin, Dalei Wu

Department of Electrical and Computer Engineering: Faculty Publications

Battery packs with a large number of battery cells are becoming more and more widely adopted in electronic systems, such as robotics, renewable energy systems, energy storage in smart grids, and electronic vehicles. Therefore, a well-designed battery pack is essential for battery applications. In the literature, the majority of research in battery pack design focuses on battery management system, safety circuit, and cell-balancing strategies. Recently, the reconfigurable battery pack design has gained increasing attentions as a promising solution to solve the problems existing in the conventional battery packs and associated battery management systems, such as low energy efficiency, short pack …