Manchester Uni researchers target tidal turbine degradation

first_imgResearchers from The University of Manchester have released a study which aims to shed more light on the degradation procedures associated with tidal turbines in order to inform more accurate cost projections for potential new installations.Accurate assessment of the fatigue life of tidal stream turbines requires understanding of the unsteady loading of turbine components over a wide range of frequencies.By understanding the different loading patterns, a more accurate design life can be estimated along with overall performance, according to the University of Manchester.New research from the University aims to help improve the accuracy of assessments of the installation and maintenance costs for tidal turbines to determine their feasibility.“Accurate assessment of the fatigue life of tidal stream turbines requires understanding of the unsteady loading of turbine components over a wide range of frequencies. By understanding the different loading patterns, a more accurate design life can be estimated along with overall performance,” according to the University of Manchester.The aim of this project is to develop a better understanding of the performance degradation through the design life of a tidal turbine by determining the effect of the operating conditions on fluctuating load range and cycles.The study, titled ‘Operational loads on a tidal turbine due to environmental conditions’ by Hannah Mullings, Timothy Stallard, Grégory S. Payne, has investigated the loading experienced by the blades due to waves and turbulence over a 6-month time period.The unsteady loading of a rotor and blade is based on experimental data from tests conducted at the IFREMER test facility during 2015, as part of the EPSRC project XMED. The tests were conducted using a 1. 2-meter diameter turbine, approximately 1:15th scale relative to prototype turbines rated at 1MW. The experiments examined the magnitude and frequency range of loading on rotor and blades due to differing levels of onset turbulence and following regular waves.A Morison formulation for predicting time variation of thrust close to the wave frequency was within 3% for the majority of the tests conducted. Using the prediction of wave loads and the load spectrum generated by the experimental data; a prediction of the load cycles and magnitudes is found, the University of Manchester said.These inform an assessment of the extent to which predicted Damage Equivalent Loads (DELs) may vary due to the approach taken for modelling wave-induced loads, turbulence-induced loads and turbine operation.It is hoped that the findings from this research will inform more accurate estimations of turbine duration in a given location and conditions and will thus facilitate more accurate costings for potential new installations.last_img read more

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Ligue 1: PSG aided by own goal in win over Lyon

first_imgParis Saint-Germain survived the absence of Neymar and a Lyon fightback to win Sunday night’s Ligue 1 clash 4-2 at a stormy Parc des Princes, helped by Fernando Marcal’s truly stunning second-half own goal.Advertisement Runaway leaders and defending champions PSG were cruising at half-time with Angel Di Maria and Kylian Mbappe giving them a two-goal advantage against a Lyon side enduring a disappointing season. Then Marcal comically blasted the ball into the roof of his own net just after the break, leaving Lyon looking at another heavy defeat in Paris, where they lost 5-0 in this fixture last season.However, Martin Terrier and Moussa Dembele quickly pulled goals back, and PSG needed a late strike by substitute Edinson Cavani to secure the points.“Normally after a goal like that the game is over,” said coach Thomas Tuchel of the own goal. “But we were not disciplined enough and it was a lesson for us that it’s never over.”PSG’s performance showcased why they can ill afford to be complacent heading into their Champions League last 16, first leg match away to Borussia Dortmund on February 18, even if sporting director Leonardo insisted to Canal Plus that the tie was “not life or death” for the Qatar-owned club.They will hope to have Neymar back by then. The world’s most expensive player sat out a second consecutive match here due to a rib complaint.“We play a lot of games and errors happen but I don’t know if it’s the time to be too critical,” Tuchel added.“The team was great and we can’t forget we were without lots of key players.”Without Neymar – as well as his injured compatriots, Thiago Silva and Marquinhos, in defence – Tuchel’s side made it eight straight wins and stretched their unbeaten run to 21 games in all competitions.Lyon, meanwhile, have not won in three and this result leaves the seven-time former champions in ninth place.They are eight points adrift of the Champions League qualifying spots and their upcoming European double-header against Juventus looks certain to be a step too far for them.– Cavani nears double-century –How Rudi Garcia’s side must have wished this match had been postponed due to the swirling wind and rain caused by Storm Ciara – which left ticker-tape from pre-match fan displays strewn all over the pitch – as they struggled to keep up with PSG in the first half.PSG broke forward to open the scoring midway through the first half as Idrissa Gueye fed Di Maria to cut in from the right and beat Lyon goalkeeper Anthony Lopes with a low strike at his near post.Thomas Meunier then squared for Mbappe to score his 15th league goal of the season in the 38th minute after fine work by Mauro Icardi, and both Icardi and Mbappe also had goals disallowed for offside before the interval.Then, two minutes after the break, came what looked like the coup de grace.An attempted cutback by Julian Draxler was going nowhere before Thiago Mendes intervened, allowing Draxler to keep the ball in play and return it to the edge of the six-yard box, where the hapless Marcal slammed it into the roof of his own net.Nevertheless, Lyon hit back with Terrier’s shot squirming under the body of Keylor Navas before Karl Toko Ekambi teed up Dembele to convert his 13th in the league this season just prior to the hour mark.Paris Saint-Germain saw off a Lyon fightback to win 4-2 at the Parc des Princes on Sunday night FacebookTwitterWhatsAppEmail分享 Read Also: Ligue 1: Monaco up to fifth after frantic finishMbappe had another effort ruled out and then hit the woodwork, and it was not until the introduction of Cavani – the fans’ favourite reduced to role of bit-part player – that the home side made sure of the points.Di Maria set up the Uruguayan to complete the scoring 10 minutes from time with what was his 199th goal for PSG.They are 12 points clear of Marseille, who beat Toulouse 1-0 on Saturday with a Dimitri Payet goal. Elsewhere on Sunday, Montpellier beat struggling Saint-Etienne 1-0 and Strasbourg won 3-0 against Reims, with both sides staying in touch with the European places. Loading… Promoted ContentThe Very Last Bitcoin Will Be Mined Around 2140. Read MoreA Guy Turns Gray Walls And Simple Bricks Into Works Of Art9 Facts You Should Know Before Getting A Tattoo10 Risky Jobs Some Women Do7 Netflix Shows Cancelled Because They Don’t Get The Ratings7 Reasons Why You Might Want To Become A VegetarianBirds Enjoy Living In A Gallery Space Created For ThemWho Earns More Than Ronaldo?7 Universities In The World With The Highest Market ValueA Hurricane Can Be As Powerful As 10 Atomic BombsCouples Who Celebrated Their Union In A Unique, Unforgettable WayFantastic-Looking (and Probably Delicious) Bread Artlast_img read more

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Wenger set to propose new offside law

first_imgRelatedPosts Lampard: I still have confidence in Tomori Mane double eases Liverpool to win over 10-man Chelsea EPL: Chelsea, Liverpool in cagey duel Arsène Wenger is pressing to change the offside rule in his role as Fifa’s head of global development and his proposal could be passed in time for the Euro 2020 finals. The former Arsenal manager wants a player to be onside if any part of their body that can score a goal is behind or level with the relevant defender. His move follows a series of video assistant referee decisions in which goals have been disallowed because a player has been fractionally offside. A header by Chelsea’s Olivier Giroud against Manchester United on Monday was disallowed because part of his right boot was offside, for example, and Liverpool’s Roberto Firmino had a goal disallowed because of an armpit offside against Aston Villa. “The most difficult (issue) that people have (with VAR) is the offside rule,” Wenger said at the Laureus Sports Awards in Berlin. “You have had offsides by a fraction of a centimetre, literally by a nose. It is the time to do this quickly. “There is room to change the rule and not say that a part of a player’s nose is offside, so you are offside because you can score with that. Instead, you will be not be offside if any part of the body that can score a goal is in line with the last defender, even if other parts of the attacker’s body are in front. “That will sort it out and you will no longer have decisions about millimetres and a fraction of the attacker being in front of the defensive line.” Wenger’s proposals will be considered by the law-making body, the International Football Association Board, on February 29. The FAs of the four UK home nations and four Fifa representatives sit on the board and passing a motion requires a three-quarters majority. A change would come into force on June 1, shortly before the European Championship finals, which start 11 days later. The existing law says: “A player is in an offside position if: any part of the head, body or feet is in the opponents’ half (excluding the halfway line) and any part of the head, body or feet is nearer to the opponents’ goal line than both the ball and the second-last opponent.”Tags: Arsene WengerChelseaFIFALiverpoolOlivier GiroudRoberto Firminolast_img read more

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IAAF rejects 51 Russian athletes’ applications for neutral status

first_imgMoscow, July 5: The International Association of Athletics Federations (IAAF) has rejected the applications of 51 Russian athletes since January 2018 to get the neutral status required for performing in international competitions, the All-Russia Athletics Federation (ARAF) spokeswoman Natalya Yukhareva said Thursday.The ARAF press office reported on Wednesday that the IAAF had denied 15 athletes their admission to international competitions under the neutral status due to the insufficient time of their stay in the testing pool, reports Tass news agency.They included Artyom Makarenko (combined events), Darya Nidbaikina (triple jump), Anastasiya Bednova (400m), Natalia Shirobokova (discus), Natalia Koloskova (3,000m hurdles), Elena Chernyayeva (100m and 200m), Nina Morozova (100m hurdles and 200m), Irina Ivanova (pole vault), Margarita Sokolova (long jump), Alexander Gripich (pole vault), Dmitry Nikitin (long jump, triple jump), Kirill Chernukhin (100m and 200m), Mikhail Filatov (400m), Natalia Puchkova (race walks) and Pavel Savin (400m).”According to the updated information, the IAAF has turned down the applications of 51 Russian athletes since the beginning of 2018,” Yukhareva said.A total of 67 Russian athletes have been cleared to perform in international competitions in the neutral status (all the 2018 competitions or individual 2018 tournaments),” she said. “For five Russian race walkers, their admission to international competitions in the neutral status has been suspended until the end of a probe into the incident with the presence of coach Viktor Chegin banned for life at a training camp,” the spokeswoman said.In 1995-2015, Chegin was the chief race walking coach at the Olympic Training Centre in Russia’s Mordovia region.A number of athletes he had trained were stripped of international medals, including Olympic ones. In 2016, the Russian anti-doping agency RUSADA issued a life ban to Chegin over numerous doping violations committed by his trainees.Due to the All-Russia Athletics Federation’s currently suspended membership in the International Association of Athletics Federations, the global athletics body made a decision in late 2016 to allow Russian athletes, who meet IAAF’s required criteria, to compete in international sports events under the neutral status. In 2015, the WADA (World Anti-Doping Agency) Independent Commission carried out an investigation into activities of the ARAF, the Moscow anti-doping laboratory, the Russian Anti-Doping Agency (RUSADA) and the Russian sports ministry. IANSlast_img read more

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The Citadel looks to end streak vs Chattanooga

first_img Share This StoryFacebookTwitteremailPrintLinkedinRedditChattanooga (16-11, 7-7) vs. The Citadel (6-19, 0-14)McAlister Field House, Charleston, South Carolina; Wednesday, 7 p.m. ESTBOTTOM LINE: Chattanooga looks to extend The Citadel’s conference losing streak to 18 games. The Citadel’s last SoCon win came against the Samford Bulldogs 87-83 on Feb. 23, 2019. Chattanooga fell short in a 58-53 game at Furman in its last outing. February 18, 2020 Associated Press ARE YOU EXPERIENCED: Chattanooga has leaned on senior leadership this year while The Citadel has been fueled heavily by freshmen. For the Mocs, seniors Matt Ryan, Ramon Vila, David Jean-Baptiste, Rod Johnson and Stefan Kenic have combined to account for 73 percent of the team’s scoring, including 89 percent of all points over its last five. In the other locker room, freshmen Kaelon Harris, Kaiden Rice, Fletcher Abee and Rudy Fitzgibbons III have collectively accounted for 59 percent of The Citadel’s scoring this season, including 66 percent of the team’s points over its last five games.MIGHTY MATT: Ryan has connected on 34.8 percent of the 198 3-pointers he’s attempted and has made 13 of 36 over his last five games. He’s also made 88.9 percent of his free throws this season.WINLESS WHEN: The Citadel is 0-14 this year when it scores 73 points or fewer and 6-5 when it scores at least 74.UNDEFEATED WHEN: Chattanooga is a perfect 10-0 when the team makes 10 or more 3-pointers. The Mocs are 6-11 when the team hits fewer than 10 threes.DID YOU KNOW: The Citadel is ranked sixth in all of Division I with an average of 76.5 possessions per game.___center_img The Citadel looks to end streak vs Chattanooga For more AP college basketball coverage: https://apnews.com/Collegebasketball and http://twitter.com/AP_Top25___This was generated by Automated Insights, http://www.automatedinsights.com/ap, using data from STATS LLC, https://www.stats.comlast_img read more

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Guyana in must-win situation against Nicaragua tonight!

first_img… Glasgow, McArthur rally Guyana to 2-0 win against USVIGUYANA defeated US Virgin Islands 2-0 on Friday at the CONCACAF U-20 Championship Qualifiers in Nicaragua, thanks to goals from Nicolas McArthur and Omari Glasgow, but, coach Wayne Dover’s men will have to beat the host nation when they meet tonight, if they want to feature in the June 20-July 5 U-20 Championship in Honduras.Playing in their third match in the five-team group, Guyana, after finishing the first half goal-less, first got on the sheet with Glasgow scoring in the 54th minute, while McArthur made it 2-0 three minutes later (57th minute).However, despite getting the win, Dover would have been more comfortable if they had picked up the three points and were able to close-in on Nicaragua, as it relates to the goal tally.Nicaragua, who opened the tournament with an 8-0 thrashing over US Virgin Islands, blanked Montserrat 4-0 in their second game and edged St Vincent and the Grenadines 2-0 in the other.Guyana’s result against USVI on Friday meant that they are three goals behind Group A’s host nation.With only one team advancing to the CONCACAF U-20 Championship, Guyana will need to win today in their match, which is expected to kick off at 19:30hrs at the Nicaragua National Football Stadium in the country’s capital of Managua. (Rawle Toney)last_img read more

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NFF Mourns the Passing of Oyuki Jackson Obaseki

first_img“A truly big tree has fallen. We remember very much the work that Chief Obaseki did to promote and project the elite division of the Nigeria League during his time as chairman. It was difficult to match his passion and energy as he pursued his vision for an independent League body.“We worked together at some point during the early days of the efforts to reposition the Nigeria Premier League. He took everything that needed to be done as a project and drove everyone else around him hard to play their own roles appropriately,” Acting President of the Nigeria Football Federation, Seyi Akinwunmi said yesterday.Obaseki, known with the alias Moving Train, was also the Ohe of Bini Kingdom – a very high–ranking position in one of the oldest Kingdoms in the universe.As Chairman of the Premier League, Obaseki was automatically the 2ndVice President of the NFF during the presidency of Alhaji Sani Lulu Abdullahi – 2006-2010.Share this:FacebookRedditTwitterPrintPinterestEmailWhatsAppSkypeLinkedInTumblrPocketTelegram The Nigeria Football Federation has expressed shock over the death on the morning of Sunday 18th August 2019, of a former Chairman of the Nigeria Premier League and 2nd Vice President of the federation, Chief Oyuki Jackson Obaseki.The 75-year old breathed his last on Sunday in Benin City, having left his giant footprints in the sands of time with his extensive work, passion and vision to take Nigeria League’s elite division to new heights.He was pioneer chairman of the body known as Interim Management Committee which was inaugurated in February 2005, and which transmuted to the Nigeria Premier League the following year.last_img read more

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Wisconsin shuts out Minnesota in 3rd-place game

first_imgRAY PFEIFFER/Herald photoST. PAUL — The third-ranked Wisconsin men’s hockey team failed to win the Broadmoor Trophy at the WCHA Final Five, but capped the weekend by shutting out No. 1 Minnesota to gain some much-needed momentum and the No. 1 overall seed in the NCAA tournament.With the win, the Badgers will enter hockey’s Big Dance on a winning note for the first time since 1998.One night after clawing their way back only to lose 8-7 in overtime, the Golden Gophers came back with very little energy against UW. Not only that, but despite playing the deciding game for the season series with the Badgers and playing for the top overall NCAA seed, they seemed to think there was nothing to play for.”There were a lot of blank stares,” Minnesota head coach Don Lucia said. “I wasn’t surprised. … It was tough to summon that energy.”It was a polar opposite story for Wisconsin, which used all of those reasons as motivators and took it to Minnesota from the get-go.”We looked at it as the rubber match between two good teams in our league. It was 2-2 in the season series,” UW goalie Brian Elliott said. “We really wanted to get out there and win that. … We didn’t really think about what it would do until the end of the game.””Nobody was looking at this as just a third-place game,” Eaves said. “There was a lot of pride on the line. This was one and two in the RPI rankings, this was a rubber match. It was a big game.”Andrew Joudrey capitalized on a breakaway, skating in all alone and beating Minnesota’s Kellen Briggs five-hole to give UW the 1-0 lead less than four minutes into the game. It was the 11th time this season the Badgers scored in the opening five minutes, and they never looked back.Freshman Jack Skille doubled the lead for Wisconsin midway through the second frame. Despite UW tallying just four more shots on goal than Minnesota, the Gophers had very few chances.What chances they did have, junior Brian Elliott was there to answer the call. He finished with 26 saves and his sixth shutout of the year, a UW record. He also tied the school record by gaining the ninth shutout of his career.”I don’t even know what back is,” Elliott said when asked if he was back to where he was before his injury. “You can’t really describe your play before or after an injury. I have the confidence in myself and my teammates that we can bring that kind of game every night. Now it’s just four more games the rest of the season.”Ross Carlson and leading scorer Robbie Earl capped off the scoring for UW in a game that nearly lulled the crowd of 16,134 at the Xcel Energy Center to sleep.One night earlier, the Badgers were left scratching their heads against North Dakota. For the third time in about a month, they grabbed an early lead but squandered away the opportunity to play in the title game with a 4-3 loss.”As individuals learn at different rates, so do teams,” UW head coach Mike Eaves said. “Apparently, we have a pretty thick skull right now. Our hope is that we can figure this darn thing out.”It looked like UW would put it in cruise control after the first 11 minutes of action included a pair of UW goals. But the Sioux charged back with two goals of their own in the final four minutes.”We got a two-goal lead, and we just kind of became complacent with ourselves,” UW sophomore Joe Pavelski said. “We gave up a couple soft goals. … It takes the wind out of you a little bit. It’s a lesson we’ve got to learn.”It’s happened two times. If it doesn’t sink in by now, it’s never going to sink in.”Pavelski scored seven minutes into the game to give the Badgers a 1-0 lead, and Andy Brandt doubled it later in the frame with his first goal in 76 games to snag the momentum.But it was stolen right back when the Fighting Sioux scored back-to-back goals — including one by Rylan Kaip, who had never scored in his 59-game UND career — in the final two minutes.”We’ve got a veteran team, and everybody’s seen what we can do,” a frustrated Pavelski said. “We’ve played excellent. It’s just something that comes with each guy. We need every guy going out there.”Rastislav Spirko gave North Dakota the lead early in the second period, and the unlikely scorer Kaip got his second of the game and eventual game-winner with less than two minutes remaining in the second frame.Earl tried to swing the momentum before the second intermission, but the two teams fought to a stalemate over the final 20 minutes, and the Sioux moved on to the championship game.”We weren’t desperate at all times,” Pavelski said. “I had a shot go through my legs in the slot. We had numerous chances to make it a three-goal game. When we figure out how to do that … to put a team away like that … we’ll get going again.”The Badgers got it going again Saturday afternoon and hope to carry that momentum into the NCAA tournament, where they will start next Saturday in Ashwaubenon, Wis.last_img read more

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Lecky nets 4 goals in loss, shows vast improvement from last season

first_img Facebook Twitter Google+ Published on March 2, 2014 at 4:22 pm Contact Phil: pmdabbra@syr.edu | @PhilDAbb CHARLOTTESVILLE, Va. — Around this time a year ago, Hakeem Lecky couldn’t buy a goal.None of his 11 shots through Syracuse’s first three games last season found the back of the net. Only two of his first 19 rips of the year did. He had the speed to burn defenders, but not the skill to finish the play.But Saturday night, the redshirt junior couldn’t have looked much more different than his former self.“He was feeling it,” midfielder Scott Loy said. “That’s the best I’ve ever seen him play.”Although it wasn’t enough for the No. 6 Orange (2-2, 0-2 Atlantic Coast) in its 17-12 loss to No. 4 Virginia (6-0, 6-1), Syracuse’s starting midfield line combined for eight goals and four assists, with Lecky and his four scores at the forefront. He netted three goals in the second half to try to mount a late comeback, but the Cavaliers massive advantage at the faceoff X gave SU limited opportunities.AdvertisementThis is placeholder textLecky initiated the Orange’s game-opening 3-0 run by dodging down the right lane past UVA defender Bobby Hill, and sniping a laser past goalie Matt Barrett’s right-hand side.“We’re just somehow finding the open holes,” Lecky said.Almost six minutes into the second half, SU defender Sean Young tossed a pass ahead to Lecky. He hauled it in and charged toward the crease, daring a UVA defender to pick him up and force him to dish it.Greg Danseglio was too late. Lecky drilled a shot inside the left post and drew the Orange within one at 9-8.Lecky logged a hat trick with a score at the end of the third quarter, attempting to give Syracuse some life heading into the fourth. Midway through the final frame, Lecky side-stepped a defender toward his right, left his feet and whipped a shot past Barrett’s right again. The goal cut the Cavaliers’ lead to 14-12 and although Syracuse wouldn’t score again, it was proof of how far Lecky’s come in the last year.If the Orange can secure itself more possessions per game as the year progresses, it may need to turn to Lecky more frequently.“It’s great to see him do that well,” SU head coach John Desko said. “He dodged extremely well, placed the ball well against their goalie. I’d like to have the ball more to give him more opportunities.” Commentslast_img read more

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Journalists discuss sports and politics at Annenberg

first_imgAssistant professor Miki Turner (left) moderated a discussion with sports journalists Jemele Hill (middle) and LZ Granderson (right) at Wallis Annenberg Hall Thursday. (Andres Casanova/Daily Trojan) “The NFL has a very long and dedicated history toward pummeling people in court,” Hill said. “This is as close to a guilty verdict as your going to get with the NFL.” Hill said that while sports have excluded minority groups in the past, events like the Olympics and the Super Bowl help bring people of all races together. “I think there is a lot of good that can come from [social media],” Granderson said. “It’s up to the individual person who’s both writing and reading to decide if they want to use this power for good or evil.” Granderson also discussed the importance of social media to inform audiences and spread information about hate crimes, such as police brutality. Sports journalists Jemele Hill and LZ Granderson discussed the intersection of sports and politics and gave professional advice to students at Wallis Annenberg Hall Thursday. Miki Turner, an assistant professor at the Annenberg School for Communication and Journalism, moderated the discussion. While she didn’t grow up with social media, Hill said she understands its importance in spreading information in the digital age. During the discussion, Turner asked the journalists if in the wake of criticism of the sports industry from athletes like former 49ers quarterback Colin Kaepernick and LeBron James, that sports still unified people in America. Hill said that since President Donald Trump spoke out against political activism among black athletes, the sports industry has become more polarizing for everyone involved. Granderson also talked about “Empire” actor Jussie Smolett, who was recently charged with falsely claiming to be the victim of a hate crime. He said it was unfortunate that Smolett’s case received significantly more attention from Chicago officials than other black and LGBTQ people who have been true victims of hate crimes. center_img Hill also discussed a column she wrote in The Atlantic about Kaepernick’s recent settlement with the NFL, in which he alleges the NFL “blacklisted” him. The settlement will potentially allow him to play again. She said the controversial settlement was a victory for Kaepernick and NFL players as a whole. “These are all shared experiences, and so sports while at times has not been the leader in society, it could be,” Hill said. “At other times, it has shown us what we’re capable of.” Kelly Jones, a visitor at USC, said that she enjoyed hearing about the speakers’ varied experiences in sports journalism. “But even before somebody like Donald Trump came along, there was always this very uncomfortable dynamic of black talent, entertaining white fans,” Hill said. “There were some … hard conversations that needed to be had about why we were good enough to entertain, but not good enough to own or to be in a decision making capacity.” “I think it’s important to understand its value, … but you can’t take it seriously in the sense that people you don’t know, you can’t allow their opinions of you, of your words to really settle in your spirit,” Hill said. “I know queer people of color who have suffered violence, and they can’t get one cop … to look at what actually happened to them,” Granderson said. “[The event] brought together a couple of people who really have a lot of experience in sports journalism and were comfortable to tell very honest stories and just had a lot of integrity in what they said,” Jones said.last_img read more

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