Showing posts with label Engineering. Show all posts
Showing posts with label Engineering. Show all posts

Thursday, July 18, 2013

SRAP Student Spotlights: Elena, Holden and Solar Cells





SRAPer: Elena Martinez
From: Colorado
Grade: Senior
Plans after high school: Stay in Colorado for university and study something related to math or science

SRAPer: Holden Bindl
From: Wyoming
Grade: Junior
Plans after high school: attend a university, probably UW

The stereotypical image of a scientist is an individual working in a lab, clad in a white lab coat. While Elena Martinez and Holden Bindl have worked in a lab and worn lab coats, they’ve found that being a scientist can mean working collaboratively. During their SRAP experience this summer they worked together with Dr. Jon Pikal, an electrical and computer engineer, on solar cells.
“We’re working on developing different methods of building solar cells inexpensively,” Holden says. “We are using different materials and measuring how much energy they can absorb from the light.”
A solar cell converts energy from light into electricity. Part of Holden and Elena’s project involved using lasers to study to the properties that make up a solar cell. For Elena, working with the laser was the best part.
“We’ve been shooting the laser towards this device called a monochromator,” Elena says. “What that does is separate the wavelength out so that we can detect a certain wavelength at a certain point. At first, it was kind of hard. I didn’t really know how to collect this type of data. Once I got it though, it was pretty cool.”
Using a laser offered Holden and Elena more control than trying the experiments with sunlight, because the light from the sun is so variable.

“With the laser we can control the color of the light, the amount of light, when the light is on and even the amount of time the light is on,” says Dr. Pikal.

Having this amount of control allowed for Elena and Holden to accurately test and compare different materials that could be used to build solar cells.

Prior to launching into their project and working with the laser, Holden and Elena spent their first two weeks training.
“In this type of field, there’s a lot of background knowledge that has to be gained,” Dr. Pikal says. “You don’t learn this stuff in high school.”
Elena and Holden definitely learned things they never would have in high school, such as how to use a laser. Both students received laser safety training and passed the laser safety exam.
On Friday, July 19th, they will present their research to their SRAP peers and all of the mentors for the program. SRAP is a six-week long intensive research program based at the University of Wyoming and sponsored by Wyoming EPSCoR.

By Kali S. McCrackin

Monday, July 15, 2013

SRAP Student Spotlight: Antonio, Water Issues and Mathematics


SRAPer: Antonio Duran

Home State: Colorado

Year on School: Junior

Plans after high school: Attend college and major in architectural engineering

 
Jagath (left) and Antonio working on field notes

Unlike many of his high school peers, Antonio’s favorite subject is math. Studying water is not exactly what he had in m

ind when he enrolled in SRAP, but his interests in math are being applied to water in a way he never anticipated.

“We are going to put small dams in streams near Laramie in order to better calculate discharge for the summer months,” Antonio says.

Antonio is in charge of building this dam, called a weir.

“The goal is to learn how to engineer weirs,” Antonio says. “I’m interested in engineering. The most interesting part of the project is the designing process and getting to talk to everybody.”

Antonio taking measurements in a stream
Antonio’s project is part of the bigger WyCEHG project. Along with his mentor, Dr. Scott Miller, Antonio has had the opportunity to work with several WyCEHG researchers in and out of the field. In the early stages of the project, he helped take flow measurements with WyCEHG PhD student Jagath Vithanage, researched weir structure and created engineering designs to be built by the manufacturing lab in the College of Engineering and Applied Science.

“The weirs will help us better understand the characteristics of flows in small streams in Wyoming,” says Dr. Miller. “We have been studying these streams for a few years and have been limited in our ability to characterize stream flow in the summer because of our instrumentation. I am extremely pleased with both how well Antonio has done on his project and the fact that his weirs will be of benefit to many scientists today and in the future.”

After his weir designs were built, Antonio and Jagath installed them in several of the creeks around Pole Mountain between Laramie and Cheyenne.

“Antonio’s designs were spot-on,” says Jagath. “He took charge of the specifications, calculated the dimensions, and worked with the engineering shop to make sure the weirs were constructed properly.” 

With the weirs in place, the next stage in the project is to really put Antonio’s math skills to use. The data from automated samplers will be transformed into discharge measurements using the weir equations Antonio developed.

“Antonio is going use his interest and skill in mathematics to help us calculate streamflow automatically from devices we leave in the field,” says Dr. Miller. “This way we can know what is happening around the clock and better understand the system. Anotnio’s participation in the research has been a huge help.”

While the connection between math and water wasn’t immediately clear at the start of his project, it has given Antonio a great experience with applying math to real-world problems.

“I think SRAP is a really great program and it is a great experience to be here,” says Antonio. “It’s nice to see how it is to really research and how life is in college.”

SRAP is a six-week long intensive research program based at the University of Wyoming and sponsored by Wyoming EPSCoR.

By Kali S. McCrackin
Photos by Robin E. Rassmussen and Kali S. McCrackin

Sunday, October 28, 2012

Faces of Science: Engineering, snow storms and transportation systems

This is the forth of a series of blogs about women in science at the University of Wyoming, as we initiate our new NSF-funded program.Throughout the year we will be blogging about women in engineering, earth sciences, biological sciences and beyond. 

Dr. Young in Gulfoss, Iceland last May.
                The first significant snow storm of the year blanketed the town yesterday, reminding us all of the importance of knowing road conditions for winter travel. Wind, snow and ice create treacherous conditions, and accurate information is essential for safe travel. Most people probably don’t know that the road condition alerts and warnings around Laramie come from a collaborative effort between the Wyoming Department of Transportation (WYDOT) and an engineer at the University of Wyoming. Dr. Rhonda Young provides data analysis and algorithms to the WYDOT Traffic Management Center in Cheyenne to help them provide better information to travelers.
“We keep trying to provide information faster and have it be more reliable,” Dr. Young says.
Dr. Young is a professor in Civil and Architectural Engineering at UW. Her area of expertise is transportation systems, specifically in operating rural facilities in extreme weather conditions. With snow almost nine months a year and high winds year around, Laramie is the perfect place for Dr. Young’s research interests.
When she began her research, Dr. Young found that the digital road sign on I-80 east outside of Laramie read ‘slick in spots’ for eight and a half months straight.
“That doesn’t really mean anything,” Dr. Young says. “People aren’t going to change their travel or make any decisions because the sign says that.”
Dr. Young also found that signs reading ‘high winds’ have little meaning, especially for travelers who are unaccustomed to the high wind gusts Laramie sees. In order to help WYDOT provide travelers with more meaningful information, Dr. Young uses engineering and math to evaluate road conditions. She provides this information to the Traffic Management Center so they can post messages on highway signs that tell travelers more exact information. Dr. Young’s work in developing algorithms makes the Traffic Management Center decisions more data driven so they are faster to respond, provides more useful information, and makes the response more consistent from storm to storm.
“We still have trouble because people who aren’t from here don’t really understand what it means to be driving when it’s gusting sixty miles per hour, but at least they have some information to rely on,” Dr. Young says.
Her work, nonetheless, has helped WYDOT ensure safety for Laramie travelers year around. Their efforts help travelers weigh the risks of travel and make appropriate decisions. This impact on society is what Dr. Young was looking for in high school when she started thinking about a career.
Dr. Young found out about civil engineering one day when she walked into her high school career counselor’s office.
“I just sort of stumbled upon it,” Dr. Young says. “Most engineers are engineers because their dad was an engineer. Especially on the male side of it, it’s much more of a family history thing, and I didn’t have that.”
What Dr. Young did have however, was an interest in transportation systems and a solid understanding of math and science. Civil engineering synthesized her strengths and interests while allowing her to benefit society.
“I liked the idea of civil engineering still being related to society,” Dr. Young says. “You can talk to people about it.”
Dr. Young pursued a bachelor’s degree in civil engineering and then worked in the field for 12 years. She wanted to be a teacher, but she found that when she was in school, her favorite teachers were the ones who had worked professionally first. Her experience in the public sector has informed her classroom instruction and helped to present the softer side of engineering to her students but showing them the importance of relating engineering problems to public concerns.
“You take your engineering answer to the public and then you can’t understand how they can’t just love what you’ve done,” Dr. Young says. “It is sort of sobering to be like, ‘Oh, I never thought of it that way,’ when the public sees the problem differently.”
Working in the public sector verses the private sector allowed Dr. Young insight into working with and benefiting communities, much as she does today with her current research.
“The political process of the public sector slowed things down, we didn’t get as much built, but it was more about making sure communities were livable and bike-able,” Dr. Young says.  “It fit more with my values than just building, like in the private sector. In the private sector you calculate and you get an answer, but what does that mean? There are lots of different sides to the story.”
Dr. Young presents all these sides in her classes. She wants her students to realize how many options they have as civil engineers, where they can work as anything from an engineer on a rapid transit train in the city all the way to being the city engineer in a little town or 10,000 people.
“That’s pretty rare for engineering in general to allow you to pick what kind of lifestyle you want,” Dr. Young says.
Because of the diversity of options, most civil engineers find jobs after graduation whether it’s in the public sector, private sector or academia. The opportunity to pick the kind of lifestyle you want and the ability to help society are huge benefits of the field, especially for women.
At UW there are very few women studying civil engineering because of the architectural engineering degree which attracts more women, but nationwide there are a lot of women in civil engineering, especially in transportation systems.
As an instructor in the field, Dr. Young says that confidence is key for students, especially female students.
“There is a recognition that female students bring a certain skill set to the class and the field, whether it’s thinking about a problem differently or keeping things organized or asking different sorts of questions,” Dr Young says. “But usually they are quite good students and they are quite assertive.”
While women are very successful both as students and as professionals in civil engineering, it is important that they be aware of how they personally deal with problems and working environments. This is a lesson Dr. Young learned after leaving the public sector and starting in academia. Women tend to be team players, she says, but she had to learn to be protective of her time, especially when she was going through the tenure process.
“The tenure process is really strange because it’s a black and white mark that says ‘we’re either going to hire you for life or we’re not,’” Dr. Young says. “So, they put you through seven years of really testing you.”
This environment was drastically different than the encouraging, positive atmosphere of the public sector, because it tends to be more critical. Being critical is necessary because the department has to ensure that you can do everything due to the weight and high status that comes with the tenure decision.
Dr. Young also faced an odd environment when she began at UW because there had never been a tenured woman in the UW College of Engineering.
“It was a little bit strange for me because I thought, ‘where did they all go?’,” Dr. Young said.
Today, there are several tenured women in the college, included Dr. Young. She was the third tenured woman in the college and the first in the Civil and Architectural Engineering Department. During the tenure process, Dr. Young had her first son, which many people questioned, but Dr. Young showed that balancing, hard work and determination can overcome any perceived barrier and any doubt people may have about you. 

By Kali S. McCrackin
Photo courtesy of Dr. Rhonda Young