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2018

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Articles 1 - 30 of 5515

Full-Text Articles in Engineering

Csar 62 Spin Curve, Mohsen Azadi, Georgia Griggs, Glen De Villafranca, Gerald Lopez Dec 2018

Csar 62 Spin Curve, Mohsen Azadi, Georgia Griggs, Glen De Villafranca, Gerald Lopez

Protocols and Reports

No abstract provided.


Wyoming Wheels, David Tobin Dec 2018

Wyoming Wheels, David Tobin

Honors Theses AY 17/18

Manual wheelchair users traditionally suffer from an increased risk of chronic shoulder injury and the inability to travel quickly or uphill independently. Beginning as a senior design project in fall of 2016, Wyoming Wheels is a geared, lever-action, manual wheelchair system designed to mitigate these challenges. For the 2017-2018 school year, the goal of the project was to create a functional prototype by optimizing the previous year’s project. Specifically, the weight and noise output needed to be decreased, and the shifting, braking, and overall ergonomics of the chair needed to be improved. The total weight of the chair was ...


Agen Cbet Terpercaya, Agen Cbet Dec 2018

Agen Cbet Terpercaya, Agen Cbet

agen cbet

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Dengan ada nya sebuah laman perjudian sepak bola online ini pastinya benar-benar berpeluang terhadap anda untuk melaksanakan permainan hal yang demikian, pun anda yang mau melaksanakan ...


Comparing Beijing's And Tokyo's Population Growths, Ernest M. Oleksy Dec 2018

Comparing Beijing's And Tokyo's Population Growths, Ernest M. Oleksy

The Downtown Review

The growth of the human population has led to the formation of largely populated agglomerations known as megacities. Although megacities can be found on multiple continents, Asia’s collection displays how megacities can develop in their own directions. Japan’s megacity of Tokyo, like other Japanese megacities, has adopted a western approach. China’s Beijing, on the other hand, continues to embrace its eastern roots. These megacities may differ in their ideologies, but they share in experiencing similar phenomena. One of these phenomena is population growth.


The Theory Of Relativity And Applications: A Simple Introduction, Ellen Rea Dec 2018

The Theory Of Relativity And Applications: A Simple Introduction, Ellen Rea

The Downtown Review

This paper will provide a brief overview of the theory of relativity by looking at its two parts: special relativity and general relativity. It will omit most of the complex mathematics involved in order to focus on providing a more conceptual understanding. However, some simplified equations will be introduced to illustrate various aspects of the theory. Some of the experiments and scientific observations that support the theory as well as some of the scientific advances that emerged from the theory will also be discussed. Following the overview of the theory of relativity will be some of its applications in past ...


An Examination Of The Death Penalty, Alexandra N. Kremer Dec 2018

An Examination Of The Death Penalty, Alexandra N. Kremer

The Downtown Review

The death penalty, or capital punishment, is the use of execution through hanging, beheading, drowning, gas chambers, lethal injection, and electrocution among others in response to a crime. This has spurred much debate on whether it should be used for reasons such as ethics, revenge, economics, effectiveness as a deterrent, and constitutionality. Capital punishment has roots that date back to the 18th century B.C., but, as of 2016, has been abolished in law or practice by more than two thirds of the world’s countries and several states within the United States. Here, the arguments for and against ...


Creating Holistic Engineers To Solve The Grand Challenges Of The Future, Una Beagon Dec 2018

Creating Holistic Engineers To Solve The Grand Challenges Of The Future, Una Beagon

Articles

Una Beagon writes that continued growth in construction depends on third level Institutions securing a talent pipeline of Civil & Structural Engineers with suitable skill sets to bring about, maintain and operate large multidisciplinary projects.


Funding Opportunities Specifically For Early Career Unh Investigators: Science, Technology, Engineering, And Math (Stem) – Federal Agencies -- 12.13.18, Lynnette Hentges Dec 2018

Funding Opportunities Specifically For Early Career Unh Investigators: Science, Technology, Engineering, And Math (Stem) – Federal Agencies -- 12.13.18, Lynnette Hentges

Early Career Investigators

This comprehensive list of funding opportunities for early career investigators offered by federal agencies that are appropriate for UNH researchers working in the areas of science, technology, engineering, and math provides information about program focus, eligibility requirements, funding amount and time period, as well as deadlines and links to program web sites and application instructions.

Opportunities available from the National Institutes of Health (NIH) are listed separately.


Multi-Layer Shotcrete Design For Tunnel Construction, Bruno Mattle, Wolfgang Summerer, Sebastian Höser, Vladimír Bartoš Dec 2018

Multi-Layer Shotcrete Design For Tunnel Construction, Bruno Mattle, Wolfgang Summerer, Sebastian Höser, Vladimír Bartoš

Shotcrete for Underground Support XIII: New Developments in Rock Engineering, Tunneling, Underground Space and Deep Excavation

No abstract provided.


Vocal Processing With Spectral Analysis, Bradley J. Fitzgerald Dec 2018

Vocal Processing With Spectral Analysis, Bradley J. Fitzgerald

ELAIA

A well-known signal processing issue is that of the “cocktail party problem,” which A well-known signal processing issue is that of the “cocktail party problem,” which refers to the need to be able to separate speakers from a mixture of voices. A solution to this problem could provide insight into signal separation in a variety of signal processing fields. In this study, a method of vocal signal processing was examined to determine if principal component analysis of spectral data could be used to characterize differences between speakers and if these differences could be used to separate mixtures of vocal signals ...


Elaia 2018, Stephen Case Dec 2018

Elaia 2018, Stephen Case

ELAIA

Over the years, the Program has continued to grow and flourish, and the depth of its research continues to increase. This inaugural journal represents the fruits of that development, containing capstone research projects from the 2018 Honors Program senior class and their faculty mentors. The Table of Contents is diverse, and in that way it is a crystal clear reflection of our program’s community of scholars.

I, along with the members of the Honors Council, am gratified by the work of each student and faculty mentor printed within these pages. Congratulations, everyone!

- Stephen Lowe, Honors Program Director


Experimental Testing And Modeling Of Partial Nitrification At Different Temperatures, Xiaoguang Liu Dec 2018

Experimental Testing And Modeling Of Partial Nitrification At Different Temperatures, Xiaoguang Liu

Electronic Thesis and Dissertation Repository

Nitrogen in wastewater treatment plant effluents has adverse environmental effects on aquatic systems. Excessive concentrations of nitrogen in water bodies can result in the depletion of dissolved oxygen, deterioration of water quality, and shifts of biotic community. Conventional biological nitrogen removal (BNR) processes consume high energy for nitrification and require external carbon for denitrification. Alternatively, partial nitrification is of interest as an emerging technology for its lower need of organic carbon addition and cost savings in aeration. In this study, the main objectives are: 1- developing a mathematical model involving operational parameters for the determination of successful partial nitrification conditions ...


A Computational Analysis Of The Gradient Concentration Profile Of Deet And The Mosquito Behavioral Response, Brandon Carver Dec 2018

A Computational Analysis Of The Gradient Concentration Profile Of Deet And The Mosquito Behavioral Response, Brandon Carver

Master's Theses

DEET is a common active ingredient in most spatial repellents. DEET is also a volatile organic compound. DEET prevents mosquitoes from detecting and coming into contact with an human individual. Gas sensing technologies such as metal oxide semiconductor sensors can detect VOCs. The World Health Organization provides the majority of efficacy testing methods. This research adapts methods from the WHO and use of MOS sensors to further understand how and why DEET affects mosquitos. A custom developed system is used to measure DEET dissipation and observe mosquito behavioral response to the DEET. DEET dissipations and mosquito behavior is measured within ...


Polyhedral Oligomeric Silsesquioxane-Phosphate Glass Matrix Nanocomposites With Additional Chapter On Phosphate Glass-Poly(Ethylene Terephthalate) Matrix Composites, Kyoungtae Kim Dec 2018

Polyhedral Oligomeric Silsesquioxane-Phosphate Glass Matrix Nanocomposites With Additional Chapter On Phosphate Glass-Poly(Ethylene Terephthalate) Matrix Composites, Kyoungtae Kim

Dissertations

Preparation and characterization of tin fluorophosphate glass (Pglass) matrix nanocomposites incorporating polyhedral oligomeric silsesquioxane (POSS) were investigated on the structural, thermal, morphological, mechanical, and rheological properties. Various processes including synthesis, extrusion and sintering processes were applied to prepare the nanocomposite samples. Another application of POSS with hydrophobic functional groups on the well-structured nanoscale silicate cage with three silanol groups was investigated to present the feasibility to use POSS molecule as a coating material on the surface of the hydrophilic inorganic glass. In addition, Poly(ethylene terephthalate) polymer matrix composites incorporating Pglass was studied to present the benefits of the Pglass ...


How Crosslinking Mechanisms Of Methacrylated Gellan Gum Hydrogels Alter Macrophage Phenotype, Zhuqing Li, Kaitlin M. Bratlie Dec 2018

How Crosslinking Mechanisms Of Methacrylated Gellan Gum Hydrogels Alter Macrophage Phenotype, Zhuqing Li, Kaitlin M. Bratlie

Materials Science and Engineering Publications

In tissue engineering scaffolds, macrophages play a critical role in determining the host response to implanted biomaterials. Macrophage phenotype is dynamic throughout the host response, and a balance of phenotypes is essential for timely progression from injury to proper wound healing. Therefore, it is important to predict how materials will modulate the response of macrophages. In this study, we investigated the effect of methacrylated gellan gum hydrogels on macrophage phenotype and proliferation with the ultimate goal of improving rational design of biomedical implants. Naïve, along with classically and alternatively activated RAW 264.7 macrophages were seeded on methacrylated gellan gum ...


Epics Gaqt: Nandi Clean Kitchen Study, Yichen Fan Dec 2018

Epics Gaqt: Nandi Clean Kitchen Study, Yichen Fan

Engagement & Service-Learning Summit: Connecting Through Listening & Scholarship

No abstract provided.


Analysis And Simulation Of Convolution Reverb Using City Tech’S New Auditorium, Tian Leng Dec 2018

Analysis And Simulation Of Convolution Reverb Using City Tech’S New Auditorium, Tian Leng

Publications and Research

In digital signal processing, convolution reverb can simulate the reverberation of a real acoustic space. The acoustics of different seating areas in an auditorium can vary from each other. To determine the reverberant characteristics of City Tech new building’s auditorium, impulse response (IR) signals are recorded in five key locations of the auditorium.

Directly recorded balloon burst is chosen as the source of impulse source. An omnidirectional and a cardioid microphone with flat frequency response curves are used to record IR signals to 24-bit monophonic wav files. Each IR signal, along with a vocal, is convoluted in MATLAB through ...


Economic Potential For Distributed Manufacturing Of Adaptive Aids For Arthritis Patients N The U.S., Nicole Gallup, Jennifer Bow, Joshua M. Pearce Dec 2018

Economic Potential For Distributed Manufacturing Of Adaptive Aids For Arthritis Patients N The U.S., Nicole Gallup, Jennifer Bow, Joshua M. Pearce

Department of Materials Science and Engineering Publications

By 2040, more than a quarter of the U.S. population will have diagnosed arthritic conditions. Adults with arthritis and other rheumatic conditions earn less than average yet have medical care expenditures that are over 12% of average household income. Adaptive aids can help arthritis patients continue to maintain independence and quality of life; however, their high costs limit accessibility for older people and the poor. One method used for consumer price reduction is distributed manufacturing with 3-D printers. In order to assess if such a method would be financially beneficial, this study evaluates the techno-economic viability of distributed manufacturing ...


Quantification Of Voc Emissions From Carbonized Refuse-Derived Fuel Using Solid-Phase Microextraction And Gas Chromatography-Mass Spectrometry, Andrzej Białowiec, Monika Micuda, Antoni Szumny, Jacek Łyczko, Jacek A. Koziel Dec 2018

Quantification Of Voc Emissions From Carbonized Refuse-Derived Fuel Using Solid-Phase Microextraction And Gas Chromatography-Mass Spectrometry, Andrzej Białowiec, Monika Micuda, Antoni Szumny, Jacek Łyczko, Jacek A. Koziel

Agricultural and Biosystems Engineering Publications

In this work, for the first time, the volatile organic compound (VOC) emissions from carbonized refuse-derived fuel (CRDF) were quantified on a laboratory scale. The analyzed CRDF was generated from the torrefaction of municipal waste. Headspace solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) was used to identify 84 VOCs, including many that are toxic, e.g., derivatives of benzene or toluene. The highest emissions were measured for nonanal, octanal, and heptanal. The top 10 most emitted VOCs contributed to almost 65% of the total emissions. The VOC mixture emitted from torrefied CRDF differed from that emitted by other types ...


Smart Iot Sprinkler System, Galib F. Rahman Dec 2018

Smart Iot Sprinkler System, Galib F. Rahman

Publications and Research

The average family spends more than $1000 in water costs per year. One-way water is commonly wasted in many households is via inefficient sprinkler systems for lawns. Current technology has enabled the development of automatic sprinkler systems, which can be preconfigured to operate at desired times of day and intervals. Although these systems may reduce the amount of water utilized overall, they are not weather forecast aware. In situations when rainfall is upcoming the systems still water the lawn. In this project, we plan to implement a smart sprinkler system that has full awareness of upcoming weather and take account ...


Purdue Epics And Habitat For Humanity Partnership - Service-Learning For Over 20 Years, Trevor A. Drouillard, Sue Hunter Dec 2018

Purdue Epics And Habitat For Humanity Partnership - Service-Learning For Over 20 Years, Trevor A. Drouillard, Sue Hunter

Engagement & Service-Learning Summit: Connecting Through Listening & Scholarship

For over twenty years, the Lafayette affiliate of Habitat for Humanity has partnered with the Purdue University EPICS program to connect students to real-world problems where they can learn engineering through experience. Past projects have focused on improving material storage methods, enhancing volunteer safety, developing energy-efficient building designs, and optimizing operational efficiency at Habitat for Humanity locations. The partnership is mutually beneficial for Habitat for Humanity – which benefits from the products students deliver – and for students – who learn how to apply engineering to real-world design. This poster represents a summary of what the EPICS – Habitat for Humanity partnership has produced ...


Community-Scale Water Treatment Systems In The Dominican Republic, Jonathan Racey, Annabelle Papai, Elise Fischer, Becca Johnson Dec 2018

Community-Scale Water Treatment Systems In The Dominican Republic, Jonathan Racey, Annabelle Papai, Elise Fischer, Becca Johnson

Engagement & Service-Learning Summit: Connecting Through Listening & Scholarship

Engagement and Service-Learning Summit: Reciprocal and Sustainable Partnerships


Amplification Of Earthquake Ground Motions In Washington, Dc, And Implications For Hazard Assessments In Central And Eastern North America, Thomas L. Pratt, J. Wright Horton Jr., Jessica Munoz, Susan E. Hough, Martin C. Chapman, C. Guney Olgun Dec 2018

Amplification Of Earthquake Ground Motions In Washington, Dc, And Implications For Hazard Assessments In Central And Eastern North America, Thomas L. Pratt, J. Wright Horton Jr., Jessica Munoz, Susan E. Hough, Martin C. Chapman, C. Guney Olgun

C. Guney Olgun

The extent of damage in Washington, DC, from the 2011 MW 5.8 Mineral, VA, earthquake was surprising for an epicenter 130 km away; U.S. Geological Survey “Did-You-Feel-It” reports suggest that Atlantic Coastal Plain and other unconsolidated sediments amplified ground motions in the city. We measure this amplification relative to bedrock sites using earthquake signals recorded on a temporary seismometer array. The spectral ratios show strong amplification in the 0.7 to 4 Hz frequency range for sites on sediments. This range overlaps with resonant frequencies of buildings in the city as inferred from their heights, suggesting amplification ...


Arts Integration Into Elementary Science: Force And Motion And Natural Disasters, Eric C. Ooms, Tabitha M. Wu, Ashley R. Kokemuller, Sarah E. Montgomery, Audrey C. Rule Dec 2018

Arts Integration Into Elementary Science: Force And Motion And Natural Disasters, Eric C. Ooms, Tabitha M. Wu, Ashley R. Kokemuller, Sarah E. Montgomery, Audrey C. Rule

Journal of STEM Arts, Crafts, and Constructions

This study explored the effect of arts integration into science during an instructional unit on force and motion and one addressing natural weather disasters. Seventy-eight elementary students in four classrooms (grade 5, grade 4, and two at grade 3) participated in the study. This study assessed content retention, student-made products (rollercoasters and hurricane shelters), and student attitudes. All students in each classroom experienced the two units of instruction, one unit in the experimental condition of arts integration and one unit in the control condition without arts integration. Both conditions involved students in constructing models of given materials. Each unit consisted ...


Second Grade Students Learn About Civil Engineers And Erosion, Andrea Earline Anderson, Jessica A. Meier Dec 2018

Second Grade Students Learn About Civil Engineers And Erosion, Andrea Earline Anderson, Jessica A. Meier

Journal of STEM Arts, Crafts, and Constructions

The integration of art into curricula focused on teaching science is a new perspective in education designed to reach a broader range of students. The current study examined the process of second-grade students participating in science and art activities through qualitative content analysis. The subjects of science and art were not taught to the students separately, rather, students engaged in both subjects simultaneously, in an integrated manner. Participants were 23 second-grade students (11 female and 12 male; age range 7 to 8 years) who were learning about erosion through sketching and creative construction and the work of civil engineers through ...


Ecosystem Shake Up: An Environmental Change Adaptation Project, Hannah E. Morgan, Dana Atwood-Blaine, Audrey C. Rule Dec 2018

Ecosystem Shake Up: An Environmental Change Adaptation Project, Hannah E. Morgan, Dana Atwood-Blaine, Audrey C. Rule

Journal of STEM Arts, Crafts, and Constructions

This practical article reports an intriguing diorama project for third grade elementary students (ages 8-9 years). Students worked as partners to create dioramas of given ecosystems made in pizza boxes. Then, students rolled a die to determine a change in some environmental factor that affected the ecosystem. The students discussed how this change affected the ecosystem and made a second part of their diorama showing the ecosystem after the change. Finally, students made class presentations concerning their dioramas and ideas. A rubric for assessing the projects is included. Results of this science project indicate that students became deeply engrossed in ...


Exploring The Physics Of Sound With Steam-Azing Third Graders, Page L. Foss, Kyrie D. Borsay Dec 2018

Exploring The Physics Of Sound With Steam-Azing Third Graders, Page L. Foss, Kyrie D. Borsay

Journal of STEM Arts, Crafts, and Constructions

This practical article was based on a lesson conducted with third graders from an elementary school in the Midwest who were studying concepts about sound. The lesson activities address Next Generation Science Standards that include engineering concepts, along with integrating activities that support National Core Arts Standards. The students created instruments that made music but that were not the standard string, percussion or wind orchestral instruments that they had previously studied: string, percussion, or wind. Their instruments made of recycled materials included drum and shaker combinations, animal-shaped instruments, and instruments that combined three or more instruments.


Science Through Art: Motivating Gifted And Talented Students, Ksenia Zhbanova Dec 2018

Science Through Art: Motivating Gifted And Talented Students, Ksenia Zhbanova

Journal of STEM Arts, Crafts, and Constructions

Gifted and talented students have unique characteristics and needs. Arts Integration is an effective differentiation strategy that helps meeting these students’ needs. STEM subjects are easily and organically integrated with the Arts because scientific and artistic inquiry are very similar. This practical article describes an arts-integrated project that provided the gifted and talented participants with an increased level of challenge, an opportunity for self-expression and for building social skills, amplified motivation, and a chance to deepen and demonstrate their knowledge of science, technology, engineering, mathematics, social studies and English Language Arts. In this project, identified gifted students completed figural transformations ...


Editorial: Arts Integration Allows Students The Opportunity To Be Original, Ksenia S. Zhbanova, Audrey C. Rule Dec 2018

Editorial: Arts Integration Allows Students The Opportunity To Be Original, Ksenia S. Zhbanova, Audrey C. Rule

Journal of STEM Arts, Crafts, and Constructions

This editorial explores the other six articles in this issue 2 of volume 3 of the Journal of STEM Arts, Crafts, and Constructions to examine how originality is displayed and supported by art projects. Originality, is a quality or a characteristic of an idea, approach or product. Originality can be defined as newness or novelty. To be classified as original, an idea must be new. It does not have to have a utilitarian value, which is a requirement for an idea to be categorized as creative. Helping students develop originality is important because it allows the freedom to make any ...


Removal Of Carbamazepine From Drinking Water, Adam Johnson, Thomas Krumpolc, Jordan Gadberry, Juan Rodriguez, Paolo Marrero-Rivera, Zachary Wiese Dec 2018

Removal Of Carbamazepine From Drinking Water, Adam Johnson, Thomas Krumpolc, Jordan Gadberry, Juan Rodriguez, Paolo Marrero-Rivera, Zachary Wiese

Chemical Engineering Undergraduate Honors Theses

Due to the increasing prevalence of prescription medication over the past few

decades, pharmaceuticals have accumulated in various water sources. This has become a

public health concern because many pharmaceuticals have limited research on the effects

of chronic low-level exposure. According to the World’s Health Organization (WHO),

traces of pharmaceuticals products have been reported in different water sources such as

surface waters, wastewater, groundwater, and drinking water.[1] One pharmaceutical of

interest that has been detected in water sources is carbamazepine. Carbamazepine is a

common pharmaceutical prescribed for the treatment of seizure disorders, neuropathic

pain, and various psychological disorders ...