Village Hall News
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by Sandy Planisek Mackinaw News Events in Mackinaw City WEEKLY Low Impact Exercise - MWF 8am St. Anthony’s Senior Chair Yoga - Tuesday 10 am Church of the Straits Food Pantry - Wednesday 10 am - 11 am Church of the Straits Pickleball - Sunday and Wednesday 6 pm; Monday thru Friday 9:30 am (subject to change) or anytime you bring a friend March 19 Tuesday • Band concert, school gym, 7pm March 20 Wednesday • Memorial Parade Fundraising Dinner, Audie’s, 4 - 7 pm • Waterbird counter begins at McGulpin March 27 Wednesday • Painting at Headlands, 7-9pm March 30 Saturday • Native American Sugar Bush, Levering, 10am-4pm April 3 Wednesday • Author of Murder Under a Dark Sky, library, 7pm April 4 - 7 Thursday thru Sunday • Roller-derby Tournament, Recreation Center April 5 - 9 Friday thru Tuesday • Raptor Fest April 9 Tuesday • First and second grade basketball game, school gym, 6pm (donation for camping trip) April 13 Saturday • Straits Area Job Fair, Recreation Center, 11 am - 1 pm April 15 Monday • The Mackinac Bridge: Then and Now - Kim Nowack speaking at the Historical Society, library, 7pm, HAPPY ST. PATRICK’S DAY Card from the collection of Nancy Dean March 17, 2019 page 1 Mackinaw News by Sandy Planisek Dark Sky Docent Correction: Persons interested in participating in the Headlands Dark Sky Park docent program should contact Rod Cortright of the Northern Michigan Astronomy Club at (231) 675-0393 or by email at [email protected] Author to Speak at Library Wednesday, April 3, 7pm Lori Rader-Day is the Edgar Award-nominated and Anthony and Mary Higgins Clark Award-winning author. She co- chairs the mystery conference Murder and Mayhem in Chicago and serves as the national vice-president of Sisters in Crime. Under a Dark Sky is the story of Eden Wallace, a recent widow who gets caught up in an Agatha Christie-like murder mystery while on a trip to a Dark Sky Park arranged by her husband before his death. The inspiration for the novel’s setting is sure to be familiar to local readers – but there will be more about that in the program. March 17, 2019 page 2 Mackinaw News by Sandy Planisek School Band Concert Tuesday, March 19, school gym, 7pm Join us Tuesday, March 19th at 7pm in the Mackinaw City school gym for the March band concert! We will be featuring our middle school band, high school band, and some solo and ensemble acts. It is free to attend this musical event, but donations are always accepted. Our students have been working hard to prepare for Katie Anderson the concert, and we hope to see you there! Headlands Hosting ‘Painting at the Park’ Event Wednesday, March 27, 7-9pm Emmet County Parks and Recreation will host another educational event, Painting at the Park, later this month at the Headlands International Dark Sky Park. The staff at Cheboygan-based Creation Station will guide class participants through painting the Northern Lights for an evening class Wednesday, March 27, from 7-9 p.m. The event is $35 per person and includes all materials, step-by-step instructions as well as refreshments. No painting experience necessary. Leonard Laub Pre-registration is required and space is limited. Sign up now at www.creationstationmi.com/classes or call (231) 268- 3059. Payment is due at time of reservation to guarantee your seat. Credit card payments are accepted by phone and online. Village Hall News It is quiet at Village Hall. The e-team met to further discuss the idea of a community room or teen room at the Recreation Center. The Recreation Center was busy with pickleball. They invite you to come at 9:30 am weekdays to play. It is open to all and it is pick-up style. page 2 March 17, 2019 page 3 Mackinaw News by Sandy Planisek AP Computer Science class wins award for diversity by Lisa Rivera Our district was just notified this week that we have earned the AP Computer Science Female Diversity Award for 2018. The College Board strives to increase diversity in computer science, and we were recognized for this achievement. Last year there were more that 18,000 secondary schools worldwide that offered AP courses. Mackinaw City was one of only 685 that achieved this recognition! The College Board recognized schools that had 50% or higher female representation. Only sixteen schools in Michigan were recognized for this accomplishment, and the only other school from northern Michigan was Kalkaska High School. Mackinaw City had female enrollment of 65% last year in AP Computer Science. The College Board is a national organization that administers the SAT exam and AP exams, among other things. They are a non-profit organization focused on helping students successfully transition from high school to college through testing for college entrance and potentially earning college credits in high school. Third graders learn Native American history from Keith Knecht Native American history is now part of the 3rd grade curriculum so Pellston schools joined Mackinaw to hear from an expert. The goal of the program was to reinforce the students’ classroom learning, let the students see reproductions of Indian possessions, and to dispel any misconceptions. For instance, our tribes did not have horses and did not build teepees. It was a question and answer interaction with Keith asking things like, “How did Indians travel, catch food, and build shelters. And did these answers differ during the different seasons? “ Congratulations All-Conference Basketball Players Girls 1st Team -Kameryn Hartman and Madison Smith Girls 2nd Team - Samantha Somers Boys 1st Team - Logan Smith and Kale O’Brien Boys 2nd Team - Robert Martin and Hunter Malczynski Keith Knecht March 17, 2019 page 4 Mackinaw News by Sandy Planisek Science Research on the Mackinac Bridge Piezoelectricity is an electric charge produced when a material is squeezed or stressed. Can that concept be used in the real world to monitor stresses on the steel of the Mackinac Bridge? That is the question under investigation by MSU scientists. The physics involved was demonstrated by the Curie brothers in 1880. But using the physics in actual practice has involved overcoming numerous real world problems. Sensors, to pick up and transmit the electrical charge, have to be small, easily The PFG sensor costs $10 installed, cheap, dependable, low maintenance, and produce not just reams of data but actual, usable, illuminating information. The MSU scientists think they have the solution to all of these problems. They, working with PFG Technologies, have developed a tiny, cheap sensor. Once adhered to a beam of the bridge, it will measure the movement of the steel under the sensor’s surface. This data is sent to a sensor box to be picked up wirelessly by a computer. Then the data can be turned into actionable information. Fifteen of these sensors were installed on the bridge 2-1/2 years ago. MSU presented their results at the March MBA Board meeting. In one clever graph they showed how the stresses on the bridge changed during the Labor Day Bridge Walk (see below). While eye catching, the graph did not tell the MBA staff anything they did not already know. Stress on the bridge changes during Bridge Walk. The researchers plan to install 200 more sensors this summer. MBA staff want to set up a controlled experiment, put half of the sensors in areas with problems and half in areas without to see if useful data can be revealed. Three sensors, embedded in the white wafers, attached to the bridge The sensor box that stores and transmits the data Photos from MSU page 4 March 17, 2019 page 5 Mackinaw News by Sandy Planisek Does this mean the initial experiment was a success? That depends. The MSU researchers seemed very enthused and hope to install 200 sensors this summer and 2,000 sensors in 2020. However, several of the initial criteria may not have been met. Size - The scientists hypothesized how the sensors could have worked in the I-35W bridge collapse in Minneapolis a few years ago with this slide. Notice that on this gusset plate they show 420 sensors, one every inch or so, and they do not show the sensor boxes required. With three sensors to one sensor box that means someone would have to find a place to put 140 sensor boxes for just this one gusset. Because each sensor monitors such a small section of the bridge, millions would be needed for the Mackinac Bridge. Easily installed - The brand new paint job on the bridge was removed to install the sensors. To install them to the density suggested, a large portion of the paint job would have to be repaired to high standards. Cheap - At $10 each, certainly 2,000 would be affordable. But to be useful they would have to cover the entire bridge. That would be millions of sensors. Probably not affordable. Dependable - One of the merits of this system is that most of its required energy is generated by the movement of the bridge. MSU claimed that no batteries would be needed. But their slides show a battery in each sensor box, albeit, a battery with a 40-year life. The other modules of the system are given a 25-year life. If the projections are true, the sensors could be dependable if they live up to their life span projections. Low maintenance - The sensor boxes would not only add weight to the bridge, but they would collect dirt and salt that would have to be cleaned. Also, the data reader has to be within 100 meters of the transmitter.