By Sye Bennefield Jr.
On Tuesday night during the 2017 MLS Homegrown match, viewers at home and on hand had the opportunity to witness the first glimpse of video review technology, although in the scariest of circumstances.
After a collision between FC Dallas goalkeeper Jesse Gonzalez and Chivas’ U-20 forward José de Jesús Godínez, Video Assistant Referee (VAR) made its MLS debut, four days earlier than first issued.
By Sye Bennefield Jr.
The only thing hotter than Christen Press Saturday afternoon was the Toyota Park grounds as the Chicago Red Stars defeated the Orlando Pride 2-1.
Press netted a brace for the Red Stars (8-3-4, 28 points) as temperatures were as high as 91 degrees with humidity. Head referee Farhad Dadkho stopped the contest so players could hydrate and cool down.
Yet, that hardly bothered Press as she opened up the scoring in the 29th minute with a lovely Sofia Huerta ball over the top of the Pride’s back line.
By Puja Bhattacharjee
A newly restored “Scenes from the life of Saint John the Baptist” by Bartolommeo di Giovanni is among the paintings and objects on display in “Saints and Heroes: Art of Medieval and Renaissance Europe,” which opened on March 20 at the Art Institute of Chicago.
Scholars believe the painting adorned a Florentine home in the late 1400s. It was a spalliera painting– a painting hung at shoulder height. It was originally part of a series of paintings that would have decorated a room.
By Puja Bhattacharjee
People start trickling into the National Severe Storms Laboratory holding coffee cups and laptops. By 8 a.m., eight people fill a room for the Spring Experiment. The laboratory in Norman, Okla., is open all year. But now it’s tornado season.
Researchers, forecasters, software developers, IT personnel and scientists from different parts of the country have come together for the annual experimental program held during the spring severe weather season to test and evaluate new techniques and tools for hazardous weather forecasting.
One of the goals this year is to continue testing software that could possibly eradicate false alarms, issue more accurate and detailed warnings for tornadoes and other severe weather. “The false alarm ratio of a one-hour forecast of a tornado should be smaller in the future if the research pans out – meaning fewer one-hour forecasts of tornadoes will be wrong,” says Greg Stumpf, who heads this program.
By Allie Burger
It’s now…or maybe not for a long time for the Cleveland Cavaliers if they don’t win the 2017 NBA Finals. Here’s a breakdown of all the moving parts in their organization that could be affected if they lose.
Photo at top: The Cleveland Cavaliers are tied for the oldest team in the NBA and do not have a draft pick until 2019. (Allie Burger/MEDILL)
By Lily Williams
A combined team of undergraduates at Northwestern University and University of Illinois Urbana-Champaign are working together to build a satellite and instruments to test the fabrication of building materials in space.
The NASA mission is due to launch into orbit in the summer of 2018. It has two parts: a box-like satellite called a CubeSat (UIUC’s job) and a payload of instruments (NU’s job at the SpaceICE lab) to test freeze-casting . The instrumentation will freeze suspensions and study the corrugated structures of materials left behind in the freezing and thawing process. The undergraduate-only collaboration will determine if freeze-casting could be a viable mechanism for fabricating many different materials, from fuel cells to cocoa tablets, both on Earth and eventually on other planets.
The work is complex, rigorous and constantly evolving, especially because, as students graduate, they need to be replaced and re-trained from the ground up. Each university team not only has to design and test their own product, but also make sure that CubeSat and the SpaceICE payload work together.
Below are some photos that attempt to chronicle the day-to-day tasks of both teams, at NU and UIUC, where the satellite makers need to configure their spacecraft for the instrumentation.
Members of the Northwestern University SpaceICE lab present a preliminary design for their freeze-casting instrumentation via conference call with NASA. Materials science Professor David Dunand, (right) directs the SpaceICE lab.
Krysti Scotti solders a new computer for taking temperature readings on suspension samples. The lab mixes suspensions of microscopic particles and water to freeze and thaw. As they freeze the suspensions, they take temperature readings to see how the suspension structures change with the corresponding colder temperatures.
Krysti Scotti teaches Jonathan Young, a SpaceICE undergrad, how to use their multiple hand-built computers for taking temperature readings of suspensions.
Notes and instructions for making the suspension the students will test in freeze-casting. The students have to make their own suspension for testing. It took months to even decide what kind of particles would compose the best kind of suspension for freeze-casting in space. They decided on silver-coated glass particles because they don’t coagulate and they can also remain in suspension for long periods of time without settling out of the suspension.
The circuit board SpaceICE uses is composed of multiple computation systems. The team can order parts of it online, but they ultimately have to manually assemble the boards in a way that will allow them to conduct their own specific experiments.
The spinning fan will take a few hours to freeze the suspension above it in the white container. SpaceICE designed and built this fan instrument.
As part of his senior design project, Jonathan Young sets up the computer program that he will use to test the nucleation point of a suspension he has made. That means the exact moment the suspension begins to freeze.
Three members of the SpaceICE team from left to right: Jessica Li, Yingda Hu and Andy McIntosh. The three have come together for an electronics meeting to discuss some new parts they need to order for the testing instrumentation.
Yingda Hu sketches out a simplified design flow for the electronics of the freeze-casting payload during an electronics meeting. In addition to the programming and electronics team, SpaceICE also has science and engineering teams. Each meet weekly.
UIUC’s clean room. UIUC’s role in the NASA-funded mission is to design CubeSat, the bread box-sized satellite that will house NU’s freeze-casting payload from the SpaceICE lab. The plastic curtains prevent excess dust or potentially harmful debris from contaminating their satellite parts. Students are required to dress in lab coats and gloves before entering the clean room to work on the CubeSat.
Inside UIUC’s clean room, the CubeSat and it’s myriad parts await assembly and testing.
UIUC equipment for designing and conducting experiments. Undergraduates with appropriate training and knowledge will use liquid nitrogen, extremely hot ovens and intense vacuums to study the potential effects of space on their satellite designs.
Every surface of the UIUC lab is covered in instrumentation as CubeSat construction moves forward. Some of this instrumentation is relevant to the project, other instrumentation is there just to satisfy the engineer’c constant curiosity.
A UIUC workstation where undergraduates and graduates can come in to plan and design the CubeSats. UIUC began working on CubeSats in 2001, and students are currently working on five different CubeSat projects. Much of the actual construction work is done in the clean room.
Students at UIUC devised this chamber for testing all of their satellites in zero gravity. The CubeSats will go inside of the cage-like structure, which will detect signals bounced off the instrumentation inside and translate it into data the researchers can interpret.
A list of tasks the UIUC lab teams plan on completing before launch. Each lab has a different mechanism for recording and dividing duties. With so many students coming and going, a white board is a logical way to keep everyone updated.
UIUC students designed and constructed this device for building their own machinery. It could save them time rather than having to outsource production of all of their designs.
Despite designing highly sophisticated instrumentation, UIUC students still rely on post-it notes for reminding others not to interfere with sensitive equipment.
Photo at top: Northwestern materials science and engineering senior Jonathan Young spoons his suspension into the collection vestibule of the freezing instrument SpaceICE has specially designed for their research. (Lily Williams/MEDILL)
By Alissa Anderegg
At the annual Mole de Mayo Festival, thousands of hungry Chicagoans come to explore the authentic Mexican flavors of the Pilsen neighborhood. This year’s festival marks the eighth anniversary of the event, where locals and visitors come to taste some of the best mole dishes in Chicago. Each year Mole de Mayo features a mole contest, where restaurants compete with their versions of the Mexican staple. The festival is organized by the Eighteenth Street Development Corporation, a non-profit organization that has been serving the Pilsen neighborhood for more than three decades.
Mole tacos are served at the eighth annual Mole de Mayo Festival. (Alissa Anderegg/MEDILL)
By Lauren Baker
For the past five years, Chicago has been painted as a war zone where gun violence has taken over the city. Friends and family members have lost loved ones to the epidemic of gun violence. A local west side high school sees the impact that gun violence has had on its community and has decided to take a stand for a safer Chicago.
A sign is posted on a car in the North Lawndale neighborhood. (Medill/ Lauren Baker)
By Beixi(Bessie) Xu
Chorerelief is a Chicago based company that connects customers and workers who do chores and small projects such as cleaning and handy work around the home. It now serves more than 17 hundred users across the country, and most of its customers are in the Chicago and New York City areas.
Customers can use this mobile app to set their own price, own time and add photos and different locations. These selections will screen different providers and call the nearby workers in less than 30 minutes.
Photo at top:Victoria Diouf(left) is talking to worker Cesar Ledezma(right) and his helper Selene Tub(middle), they are helping her clean the apartment. (Beixi Xu/MEDILL)
By Beixi(Bessie) Xu
Bombobar is a walkby window in the heart of the West Loop neighborhood. It serves customers doughnuts, coffee, gelato and more. Bombobar is active on all social media platforms. It has 23,000 followers on Instagram, 17,425 followers on Facebook and 2,129 followers on Twitter. Vivid photographs attract customers from all over the country.
According to Jennifer Falbo, general manager of Bombobar, it serves 1,000 doughnuts week days, and 3,000 doughnuts on weekends. It also sells 2,000 hot chocolates a week. Be prepared to stand in line because of the social media effect, there is usually a 45 minute to one hour wait on weekends.
Photo at top:Customers from Atlanta are taking selfies in front of the wall.(Beixi Xu/MEDILL)