Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 194971 - 195000 of 1114062

Full-Text Articles in Entire DC Network

Teaching With Data In The Social Sciences: The Purdue Report, Jane Yatcilla, Clarence Maybee, Bethany Mcgowan, Gang Shao, D Trevor Burrows Oct 2021

Teaching With Data In The Social Sciences: The Purdue Report, Jane Yatcilla, Clarence Maybee, Bethany Mcgowan, Gang Shao, D Trevor Burrows

Libraries Reports

Purdue University Libraries participated in a multi-institution study about how instructors teach with data in social sciences courses. Thirteen semi-structured interviews were conducted with social sciences faculty who teach undergraduate students to use data, addressing questions about how faculty connect students to data; how students work with data; what types of support faculty have received that informs their teaching with data. Four broad themes emerged from qualitative coding of the interview transcripts: an array of purposes and practices for teaching about data; instructors' experiences, needs, and perspectives; managing wide-ranging student confidence and ability; technical concerns when teaching with data. The …

Go to article

Recent Progress In Superabsorbent Polymers For Concrete, Christof Schröfl, Kendra Erk, Wanwipa Siriwatwechakul, Mateusz Wyrzykowski, Didier Snoeck Oct 2021

Recent Progress In Superabsorbent Polymers For Concrete, Christof Schröfl, Kendra Erk, Wanwipa Siriwatwechakul, Mateusz Wyrzykowski, Didier Snoeck

School of Materials Engineering Faculty Publications

Scientific interest on superabsorbent polymers (SAPs) in conjunction with cement-based building materials has widened from mostly engineering aspects towards polymer physico-chemical topics over the past years. Here, we focus on the relationships between absorptivity in terms of absorption/desorption kinetics and retention of the absorbed liquid and the polymer physico-chemical principles. Based on such understanding, use and effects of SAPs in concrete are outlined and explained mechanistically. They comprise modifying rheology, internal curing to mitigate plastic and autogenous shrinkage, self-sealing and self-healing of cracks, and improvement of freezing-and-thawing durability. Recent topics such as reduction of fire spalling and enhanced growth of …

Go to article

Occurrence And Probabilistic Health Risk Assessment (Pra) Of Dissolved Metals In Surface Water Sources In Southern Peru, Alexander Ccanccapa-Cartagena, Betty Paredes, Corina Vera, Francisco D. Chavez-Gonzales, Elizabeth Joy Olson, Lisa Welp, Nadezhda N. Zyaykina, Timothy R. Filley, David M. Warsinger, Chad T. Jafvert Oct 2021

Occurrence And Probabilistic Health Risk Assessment (Pra) Of Dissolved Metals In Surface Water Sources In Southern Peru, Alexander Ccanccapa-Cartagena, Betty Paredes, Corina Vera, Francisco D. Chavez-Gonzales, Elizabeth Joy Olson, Lisa Welp, Nadezhda N. Zyaykina, Timothy R. Filley, David M. Warsinger, Chad T. Jafvert

School of Mechanical Engineering Faculty Publications

Often, metal and metalloid ions are present in water at concentrations that seriously affect human health; understanding their occurrence is critical, especially in regions such as Peru, where natural volcanic activity and anthropogenic activity have made them more prevalent in local waterbodies. In this study, river, lake, aquifer, and irrigation water samples, collected from the Chili-Quilca, Camana-Majes, Colca-Chivay-Siguas, Oco˜na, Urubamba-Vilcanota, and Titicaca river basins in Southern Peru, were analyzed for transition metals, other metals, metalloids, and other inorganic water constituents. Special emphasis was placed on metals and metalloids regulated by Peruvian Water Quality Standards and those categorized as of “primary …

Go to article

Nanofluids Improve Energy Efficiency Of Membrane Distillation, Harsharaj B. Parmar, Hamid Fattahi Juybari, Yashwant S. Yogi, Sina Nejati, Ryan M. Jacob, Prashant S. Menon, David M. Warsinger Oct 2021

Nanofluids Improve Energy Efficiency Of Membrane Distillation, Harsharaj B. Parmar, Hamid Fattahi Juybari, Yashwant S. Yogi, Sina Nejati, Ryan M. Jacob, Prashant S. Menon, David M. Warsinger

School of Mechanical Engineering Faculty Publications

Thermal desalination of high salinity water resources is crucial for increasing freshwater supply, but efficiency enhancements are badly needed. Nanomaterial enhancements offer enormous potential for improving promising technologies like membrane distillation (MD). However, while many approaches have been tried, such as nanoparticle solar absorbers or nanomaterial membranes, there have not been studies to directly enhance the fluid properties in MD; via nanofluids. In this work, we examine nanofluids for gap-based MD systems, including the role of nanoscale physics and system-level energy efficiency enhancements. Our model includes the dominant micro-mixing from Brownian motion in fine particle nanofluids (copper oxide) and the …

Go to article

Revisiting An Igg Fc Loss-Of-Function Experiment: The Role Of Complement In Hiv Broadly Neutralizing Antibody B12 Activity, Benjamin S. Goldberg, Chengzi I. Kaku, Jérémy Dufloo, Timothée Bruel, Olivier Schwartz, David A. Spencer, Ann J. Hessell, Margaret E. Ackerman Oct 2021

Revisiting An Igg Fc Loss-Of-Function Experiment: The Role Of Complement In Hiv Broadly Neutralizing Antibody B12 Activity, Benjamin S. Goldberg, Chengzi I. Kaku, Jérémy Dufloo, Timothée Bruel, Olivier Schwartz, David A. Spencer, Ann J. Hessell, Margaret E. Ackerman

Dartmouth Scholarship

The role of the complement system in HIV-1 immunity and pathogenesis is multifaceted, and an improved understanding of complement activities mediated by HIV-1-specific antibodies has the potential to inform and advance clinical development efforts. A seminal nonhuman primate challenge experiment suggested that complement was dispensable for the protective effect of the early broadly neutralizing antibody (bnAb) b12, but recent experiments have raised questions about the breadth of circumstances under which this conclusion may hold. Here, we reassess the original observation using Fc variants of IgG1 b12 that enhance complement activity and report that complement fixation on recombinant antigen, virions, and …

Go to article

The Openneuro Resource For Sharing Of Neuroscience Data, Christopher J. Markiewicz, Krzysztof J. Gorgolewski, Franklin Feingold, Ross Blair, Yaroslav O. Halchenko, Eric Miller, Nell Hardcastle, Joe Wexler, Oscar Esteban, Mathias Goncavles, Anita Jwa, Russell Poldrack Oct 2021

The Openneuro Resource For Sharing Of Neuroscience Data, Christopher J. Markiewicz, Krzysztof J. Gorgolewski, Franklin Feingold, Ross Blair, Yaroslav O. Halchenko, Eric Miller, Nell Hardcastle, Joe Wexler, Oscar Esteban, Mathias Goncavles, Anita Jwa, Russell Poldrack

Dartmouth Scholarship

The sharing of research data is essential to ensure reproducibility and maximize the impact of public investments in scientific research. Here, we describe OpenNeuro, a BRAIN Initiative data archive that provides the ability to openly share data from a broad range of brain imaging data types following the FAIR principles for data sharing. We highlight the importance of the Brain Imaging Data Structure standard for enabling effective curation, sharing, and reuse of data. The archive presently shares more than 600 datasets including data from more than 20,000 participants, comprising multiple species and measurement modalities and a broad range of phenotypes. …

Go to article

The Death Of The Genus Claim, Sean B. Seymore, Dimitry Karshted, Mark A. Lemley Oct 2021

The Death Of The Genus Claim, Sean B. Seymore, Dimitry Karshted, Mark A. Lemley

Vanderbilt Law School Faculty Publications

The central feature of patent law in the chemical, biotechnology, and pharmaceutical industries is the genus claim a patent claim that covers not just one specific chemical but a group of related chemicals. Genus claims are everywhere, and any patent lawyer will tell you they are critical to effective patent protection. But as we show in this Article, the law has changed dramatically in the last thirty years, to the point where it is nearly impossible to maintain a valid genus claim. Courts almost always hold them invalid, either at trial or on appeal. Remarkably, courts do this without acknowledging …

Go to article

The Jeanne Clery Disclosure Report 2021, Department Of Public Safety Oct 2021

The Jeanne Clery Disclosure Report 2021, Department Of Public Safety

News, Magazines and Reports

"2021 Sacred Heart University Department of Public Safety Annual Campus Crime & Fire Report."

Go to article

Mems 411: Free Kick Robot, Rahi Miraftab-Salo, Will Goldberg, Wlodie Rebesque Oct 2021

Mems 411: Free Kick Robot, Rahi Miraftab-Salo, Will Goldberg, Wlodie Rebesque

Mechanical Engineering Design Project Class

The free kick robot was designed to help train the club soccer goalkeeper: Brady Shaeffer, to save shots on goal. After a customer interview with the our client, we aimed our design to shoot accurate and powerful shots in quick succession. In addition the robot was to be easily transportable. Initially, after looking at some patents, the most commercially used soccer training robots involved two parallel disks spinning and shooting out soccer balls. As a result an initial prototype was built with this idea. However, during our concept selection, we realized that the cost of building our machine was out …

Go to article

Mems 411: Safely Capturing Giant African Pouch Rats, Anthony Brown, John Christensen, Jared Harrison Oct 2021

Mems 411: Safely Capturing Giant African Pouch Rats, Anthony Brown, John Christensen, Jared Harrison

Mechanical Engineering Design Project Class

We were tasked with designing a trap to safely capture Giant African Pouch Rats. The traps are used in both urban and rural environments that include city streets, basements, farms, river beds, and bushes among other locations. Pouch rats are much larger than most rats and are a very ferocious species; they will harm themselves if there are any non-smooth surfaces when captured. It is very important that we designed a trap with this safety top of mind.

Go to article

Mems 411: Soccer Robot, Sam Ginsberg, Ella Johnson, Aaron Ocken, Andrew Bergantz Oct 2021

Mems 411: Soccer Robot, Sam Ginsberg, Ella Johnson, Aaron Ocken, Andrew Bergantz

Mechanical Engineering Design Project Class

This design project was altered from the 2018 ASME Soccer Robot competition. Dr. Jackson Potter led a competition where groups built remote control robots to compete against each other in 1v1 matches based on a modified rule set from the initial 2018 competition.

Go to article

Mems 411: Giant Pouched Rat Trap, Ronald Fields, Mariano Gonzalez, Edward Li, Jordan Hu Oct 2021

Mems 411: Giant Pouched Rat Trap, Ronald Fields, Mariano Gonzalez, Edward Li, Jordan Hu

Mechanical Engineering Design Project Class

Dr. Braude from the Biology department at Washington University in St. Louis is currently working on a project training giant Gambian pouched rats to find mines and other bombs in former conflict zones. In order to trap Gambian pouched rats, Professor Braude asked a few MEMS 411 Senior Design groups to design and build a trap that can safely capture the rats. The trap had to be about 2-3 feet long, 6 inches in diameter, completely mechanical, simple, and it had to cost less than 30 USD to build.

Go to article

Mems 411: Mini Test Frame, Howard Wu, Max Richter, Baker Blevins, Andrew Issac Oct 2021

Mems 411: Mini Test Frame, Howard Wu, Max Richter, Baker Blevins, Andrew Issac

Mechanical Engineering Design Project Class

A lightweight, cheap, and portable compression test frame designed for testing students' structural designs for the Machine Elements class. Measures load and displacement applied on the specimen to determine the specimen with the highest strength.

Go to article

Mems 411: Giant Pouched Rat Trap, Shannon Wang, Isha Shah, Vaishali Shah, Elizabeh Saliba Oct 2021

Mems 411: Giant Pouched Rat Trap, Shannon Wang, Isha Shah, Vaishali Shah, Elizabeh Saliba

Mechanical Engineering Design Project Class

Our goal is to design a giant pouched rat trap that meets the customer needs from professor Stan Braude. The giant pouched rats are to be breed and trained to find land mines. Therefore, the rats must be captured in good condition. However, giant pouched rats are not passive once caught and tries to escape every way possible. In the past, with traditional trap wires, they tend to get caught in the wire and hurt themselves. Our solution offers a completely smooth inner wall of the trap to prevent damage to the rats, while improving on the functionality of the …

Go to article

Mems 411: Lost Grains Thresher, Alicia Gupte, Sophie Fox, Dan Heikes, Andrew Waldherr Oct 2021

Mems 411: Lost Grains Thresher, Alicia Gupte, Sophie Fox, Dan Heikes, Andrew Waldherr

Mechanical Engineering Design Project Class

The Lost Grains Thresher project aims to design and implement a device that can successfully separate the seed and chaff from various grains that are native to the greater St. Louis area. This project is designed for Dr. Natalie Mueller at Washington University in St. Louis to replace her current method of separating plant seeds from chaff by hand. This project focused on three main performance goals: 1) the device should work on a minimum of two types of seeds and thresh them to an acceptable quality, 2) the device should be easily cleaned and reset within three minutes, and …

Go to article

Mems 411: Rowing Force Plate, Mae Hubel, Taylor Southwick, Miles Petersen Oct 2021

Mems 411: Rowing Force Plate, Mae Hubel, Taylor Southwick, Miles Petersen

Mechanical Engineering Design Project Class

The Rowing Force Plate is a device that is designed to measure a rower’s force
over time so that they can understand how hard they are rowing. Most rowing
aids communicate the speed at which someone is rowing, which is variant on water
speed, wind speed, and other inconsistent environmental and situational factors.
Force, however, can be consistently measured and is a better indicator of effort a
rower is exerting. Other products that measure force do exist, but use complex and
expensive technology, unlike our design.
After brainstorming and analyzing multiple possible designs, we concluded to use
four force sensors …

Go to article

Mems 411: The Bueffer 3000, Ty W. Bedillion, Krista Sudar, Anna Oneto, Cole Kocjancic Oct 2021

Mems 411: The Bueffer 3000, Ty W. Bedillion, Krista Sudar, Anna Oneto, Cole Kocjancic

Mechanical Engineering Design Project Class

We were tasked with creating a quality product for a customer for MEMS 411 Senior Design. Our customer was the Washington University in St. Louis Men's Club Volleyball team and they asked us to create a volleyball setting machine.

Go to article

Mems 411: The Hash Setting Slasher, Garrett Barber, William Koopman, Andrew Werner, Alexandra Carr Oct 2021

Mems 411: The Hash Setting Slasher, Garrett Barber, William Koopman, Andrew Werner, Alexandra Carr

Mechanical Engineering Design Project Class

The volleyball setter has certain patents that utilize some sort of rotational component or is a stationary platform that the ball rests on before the player hits it. Our design is different because it utilizes the mechanical properties of springs to propel the ball forwards. We had certain specifications to meet to allow the volleyball to be natural in its trajectory and able to be shot efficiently and effectively. Some specifications required positioning adjustments and some defined how the ball should be propelled through the air. We also had parameters involving cost, weight, and the repeatability of the mechanism to …

Go to article

Mems 411: Volleyball Setter, Alexander Zuga, Liam Cadden, Neil Cumberland, Jacob Ridderhoff Oct 2021

Mems 411: Volleyball Setter, Alexander Zuga, Liam Cadden, Neil Cumberland, Jacob Ridderhoff

Mechanical Engineering Design Project Class

Our volleyball setting machine is intended for use by the WashU men’s club volleyball team to improve their training. It allows their skilled hitters to get more reps in practice because there currently aren’t enough skilled setters on their team.

Go to article

Mems 411: African Pouched Rat Trap, Kelechi Achilefu, Paul Joseph, David Allen, Chase Green Oct 2021

Mems 411: African Pouched Rat Trap, Kelechi Achilefu, Paul Joseph, David Allen, Chase Green

Mechanical Engineering Design Project Class

What is often thought of as a rat trap is often in reality a mouse trap, or a trap designed to catch small rodents. Rats can be quite large and catching them without harming them can be quite difficult. Current market solutions generally either kill or harm the rodent which is not acceptable for our client's needs. While there are some solutions on the market, they fall short of the needs of our client which is more specialized due to the size of rodent they will be capturing, the circumstances surrounding the capture, the number of rodents our client needs …

Go to article

Volleyball Crossbow- Group W, Giovanni Alvarez, Kyle Krippner, Alexis Rivera Oct 2021

Volleyball Crossbow- Group W, Giovanni Alvarez, Kyle Krippner, Alexis Rivera

Mechanical Engineering Design Project Class

The Volleyball Crossbow was our solution to the problem of a limited number of skilled setters on a volleyball team. This device will alleviate expectations of the setters and improve the efficiency of practice drills. The major customer needs for this device included consistency in launch, height and angle adjustability, high speed of operation, and ease of use. The Volleyball Crossbow provides a relatively low-cost, easy to manufacture design that meets these customer needs. As the name suggests, the design inspiration came from the crossbow mechanism. Two elastic bands attached to a cross-member and a cart on a track are …

Go to article

Mems 411: P.O.T.T.E.R. Test Frame, Marie Drevets, Kiersten Horton, Tony Sancho Oct 2021

Mems 411: P.O.T.T.E.R. Test Frame, Marie Drevets, Kiersten Horton, Tony Sancho

Mechanical Engineering Design Project Class

Our senior mechanical engineering design is a flexure test frame. At our university, third-year mechanical engineering students take a class called machine elements, in which the final project is a structural design competition. The students design a strong but lightweight object. The P.O.T.T.E.R. device can be used to judge the structural integrity of students contest entries. The customer who commissioned this project is Dr. Potter, who teaches the machine elements class. The customer needs a portable test frame which can apply enough compressive force to fracture an object which is secured in the device. The test frame should also measure …

Go to article

Mems 411: Soccer Robot Project, Evan Sucherman, Dylan Mitchell, Benjamin Hessman, Emre Koc Oct 2021

Mems 411: Soccer Robot Project, Evan Sucherman, Dylan Mitchell, Benjamin Hessman, Emre Koc

Mechanical Engineering Design Project Class

This project aims at designing a robot that is capable of playing a simplified form of soccer against other robots. The original competition was created by the ASME organization as a student design competition in 2018. This project is an adapted version in which some of the rules and guidelines have been changed to fit the goals of this class better. The design parameters for this project include: having the robot drive around the parameter of the playing field in under 17 seconds, having the vehicle successfully capture the ball within 2 seconds of approaching 8 out of times, and …

Go to article

Mems 411: Friction Frenzy, Angelo Hawa, Landon Tafoya, Noah Owens Oct 2021

Mems 411: Friction Frenzy, Angelo Hawa, Landon Tafoya, Noah Owens

Mechanical Engineering Design Project Class

The demo is designed to demonstrate the concept of friction to younger children(ages 4+) using an incline plane. The premise is to allow the user to slowly elevate a surface until a block resting on top begins to slide, at which point an electronic interface displays the calculated amount (or coefficient) of friction. The core functions of the device are discussed based on the customer needs in order to identify key performance goals for its successful operation. The design process is documented from initial modeling to the final prototype and critical metrics including safety and ease of fabrication are discussed. …

Go to article

Mems 411: Asme Soccer Robot, Braden Arango, Brendan Otani, Florie Markwell Oct 2021

Mems 411: Asme Soccer Robot, Braden Arango, Brendan Otani, Florie Markwell

Mechanical Engineering Design Project Class

This project was based off of a variation of the ASME Soccer Robot Competition, where 5 teams were tasked with creating a soccer robot to compete with. The main objective for each team was to create a remote-controlled robot with an integrated shooting mechanism that was capable of shooting a tennis ball, with accuracy, into a goal. A design process was used to create this robot from scratch, where multiple concepts were created and tested through mock-ups and prototypes to better understand the problem at hand. Throughout this process, three main prototype goals were prioritized: the ability to drive around …

Go to article

Mems 411: The Water Bike, Erin Flynn, Patrick Grindel, Nicholas Payne, Ryan Allin Oct 2021

Mems 411: The Water Bike, Erin Flynn, Patrick Grindel, Nicholas Payne, Ryan Allin

Mechanical Engineering Design Project Class

This design project explored the concept of a bike that can float on water and be used to assist lifeguards in rescues. The goal was for it to be quickly converted from a road to water configuration and be quick and stable enough to be a useful tool in saving drowning swimmers.

Go to article

Mems 411: Laundry No Mo (Lnm), Justin Tai, Minju Lee, Logan Johnson, Elijah Stewart Oct 2021

Mems 411: Laundry No Mo (Lnm), Justin Tai, Minju Lee, Logan Johnson, Elijah Stewart

Mechanical Engineering Design Project Class

How can you optimize your time and labor while folding laundry? You can do so with this laundry folding device called Laundry No Mo (LNM).

Go to article

Mems 411: Q.T. B-Bar, Gambian Pouched Rat Trap, Benjamin W. Horine Jr., Ileane Ho, Sarangi Pathirana Oct 2021

Mems 411: Q.T. B-Bar, Gambian Pouched Rat Trap, Benjamin W. Horine Jr., Ileane Ho, Sarangi Pathirana

Mechanical Engineering Design Project Class

To design and build an improved rat trap that will effectively capture a Gambian Pouched Rat of larger size ensuring the rodents' safety, easy deployment in natural environments, simple mechanical release mechanisms, and cost-effectiveness.

Go to article

Mems 411: Bearing Plate Loader, Daniel Firescu, Treeton Allison, Bethany Starr Oct 2021

Mems 411: Bearing Plate Loader, Daniel Firescu, Treeton Allison, Bethany Starr

Mechanical Engineering Design Project Class

Create a Bearing Plate Loader to move a plate from one location to another.

Go to article

Mems 411: Soccer Robot, Luis Castro, Lydia Kang, Moshe Eskenazi, Ryan Whelan Oct 2021

Mems 411: Soccer Robot, Luis Castro, Lydia Kang, Moshe Eskenazi, Ryan Whelan

Mechanical Engineering Design Project Class

The American Society of Mechanical Engineers (ASME) hosts annual competitions for engineeringstudents across the world. The ASME 2018 Student Design Competition wasto build a robotic soccerteam to compete in a FIFA World Cup style elimination tournament. Robot(s) must fit inside a 0.5 x 0.5 x 0.5 meter cube,be powered by batteries, and be controlled by a human operator with a wireless radio transmitter or through an electrical “umbilical” cord. The balls are tennis balls.

Go to article

First Prev Next Last