Energetic electron precipitation associated with pulsating aurora: EISCAT and Van Allen Probe observations

first_imgPulsating auroras show quasi-periodic intensity modulations caused by the precipitation of energetic electrons of the order of tens of keV. It is expected theoretically that not only these electrons but also sub-relativistic/relativistic electrons precipitate simultaneously into the ionosphere owing to whistler-mode wave–particle interactions. The height-resolved electron density profile was observed with the European Incoherent Scatter (EISCAT) Tromsø VHF radar on 17 November 2012. Electron density enhancements were clearly identified at altitudes >68 km in association with the pulsating aurora, suggesting precipitation of electrons with a broadband energy range from ~10 keV up to at least 200 keV. The riometer and network of subionospheric radio wave observations also showed the energetic electron precipitations during this period. During this period, the footprint of the Van Allen Probe-A satellite was very close to Tromsø and the satellite observed rising tone emissions of the lower-band chorus (LBC) waves near the equatorial plane. Considering the observed LBC waves and electrons, we conducted a computer simulation of the wave–particle interactions. This showed simultaneous precipitation of electrons at both tens of keV and a few hundred keV, which is consistent with the energy spectrum estimated by the inversion method using the EISCAT observations. This result revealed that electrons with a wide energy range simultaneously precipitate into the ionosphere in association with the pulsating aurora, providing the evidence that pulsating auroras are caused by whistler chorus waves. We suggest that scattering by propagating whistler simultaneously causes both the precipitations of sub-relativistic electrons and the pulsating aurora.last_img read more

inbreedR : an R package for the analysis of inbreeding based on genetic markers

first_imgSummary 1.Heterozygosity–fitness correlations (HFCs) have been widely used to explore the impact of inbreeding on individual fitness. Initially, most studies used small panels of microsatellites, but more recently with the advent of next-generation sequencing, large SNP datasets are becoming increasingly available and these provide greater power and precision to quantify the impact of inbreeding on fitness.2.Despite the popularity of HFC studies, effect sizes tend to be rather small. One reason for this may be low variation in inbreeding levels among individuals. Using genetic markers, it is possible to measure variance in inbreeding through the strength of correlation in heterozygosity across marker loci, termed identity disequilibrium (ID).3.ID can be quantified using the measure inline image, which is also a central parameter in HFC theory that can be used within a wider framework to estimate the direct impact of inbreeding on both marker heterozygosity and fitness. However, no software exists to calculate inline image for large SNP datasets nor to implement this framework.4.inbreedR is an R package that provides functions to calculate inline image based on microsatellite and SNP markers with associated P-values and confidence intervals. Within the framework of HFC theory, inbreedR also estimates the impact of inbreeding on marker heterozygosity and fitness. Finally, inbreedR implements user-friendly simulations to explore the precision and magnitude of estimates based on different numbers of genetic markers. We hope this package will facilitate good practice in the analysis of HFCs and help to deepen our understanding of inbreeding effects in natural populations.last_img read more

Costs of reproduction and carry-over effects in breeding albatrosses

first_imgWe investigated the physiology of two closely related albatross species relative to their breeding strategy: black-browed albatrosses (Thalassarche melanophris) breed annually, while grey-headed albatrosses (T. chrysostoma) breed biennially. From observations of breeding fate and blood samples collected at the end of breeding in one season and feather corticosterone levels (fCort) sampled at the beginning of the next breeding season, we found that in both species some post-breeding physiological parameters differed according to breeding outcome (successful, failed, deferred). Correlations between post-breeding physiology and fCort, and links to future breeding decisions, were examined. In black-browed albatrosses, post-breeding physiology and fCort were not significantly correlated, but fCort independently predicted breeding decision the next year, which we interpret as a possible migratory carry-over effect. In grey-headed albatrosses, post-breeding triglyceride levels were negatively correlated with fCort, but only in females, which we interpret as a potential cost of reproduction. However, this potential cost did not carry-over to future breeding in the grey-headed albatrosses. None of the variables predicted future breeding decisions. We suggest that biennial breeding in the grey-headed albatrosses may have evolved as a strategy to buffer against the apparent susceptibility of females to negative physiological costs of reproduction. Future studies are needed to confirm this.last_img read more

Tigers outhit Cougars in 9-3 victory

first_imgMay 18, 2018 /Sports News – Local Tigers outhit Cougars in 9-3 victory FacebookTwitterLinkedInEmailPROVO, Utah — Starting pitcher Ricky Reynoso held BYU baseball to one run through six innings Friday night to lead Pacific to a  9-3 win at Larry H. Miller Ballpark.“We came out a little bit passive and made mental mistakes early and got ourselves in a hole we couldn’t get out of,” BYU head coach Mike Littlewood said. “It was a microcosm of the season tonight with Keaton Kringlen getting a triple and a single with nobody on and going 0-for-3 with guys in scoring position, but that’s kind of the way it’s been this year.BYU (22-27, 11-15 West Coast Conference) only managed to score three runs off of a total of 12 hits while Pacific (21-29, 10-16 WCC) blasted 16 hits for nine runs. David Clawson went 2-of-4 from the plate adding an RBI for the Cougars. Kringlen tripled on one of his two hits.In the second inning, the Tigers put two runners in scoring position with no outs. A sacrifice fly sent one runner across the plate for their first run. A single to left field sent the second Tiger home and was followed by an error and a sacrifice bunt for a 3-0 lead.A Pacific single down the middle in the fourth sent another runner home to increase the advantage to 4-0.The Tigers didn’t back down as Matthew Tarantino hit a three-run homer to left field in the fifth inning for a 7-0 lead.In the sixth inning, Kringlen bounced a triple off the fence in center field. With one out, Clawson singled to right field to send Kringlen home for the first run of the night to trail 7-1.Keaton Glover led off the seventh with a solo blast over the left field fence to extend Pacific’s lead to 8-1.Nate Favero gave BYU momentum in the bottom of the eighth with a single into right field. Clawson reached first on a fielder’s choice while Favero advanced to third on a Pacific error. Favero gave the Cougars their second run of the game and Clawson advanced to second on a sacrifice fly by Casey Jacobsen.Koby Kelton came in as a pinch hitter for BYU and doubled to left center scoring Clawson to close the gap 9-3.The Cougars return to Miller Park for the final game of the season on Saturday at 1 p.m. MDT. Live coverage will be available through BYUtv and audio broadcasts can be heard on BYU Radio (Sirius XM 143) and ESPN 960.​ Tags: Baseball/BYU Cougars/WCC Robert Lovell Written bylast_img read more

Scoreboard Roundup — 6/8/18

first_img Beau Lund Written by June 9, 2018 /Sports News – National Scoreboard Roundup — 6/8/18center_img FacebookTwitterLinkedInEmailABC News(NEW YORK) —  Here are the scores from yesterday’s sports events:INTERLEAGUEN-Y Yankees   4    N-Y Mets   1AMERICAN LEAGUEToronto  5        Baltimore     1Cleveland  4    Detroit       1Chi White Sox  1    Boston        0Seattle   4         Tampa Bay     3Houston  7        Texas         3L-A Angels  4    Minnesota     2Oakland    7      Kansas City   2NATIONAL LEAGUEChi Cubs   3       Pittsburgh     1San Francisco  9    Washington     5Milwaukee 12      Philadelphia   4Miami    4            San Diego      0St. Louis  7         Cincinnati     6, F/10Arizona    9         Colorado       4L-A Dodgers  7   Atlanta        3NATIONAL BASKETBALL ASSOCIATION PLAYOFFSGolden State  108  Cleveland   85WOMEN’S NATIONAL BASKETBALL ASSOCIATIONAtlanta   87  Las Vegas   83Dallas    89  Indiana     83Phoenix   96  Chicago     79Copyright © 2018, ABC Radio. All rights reserved.last_img read more

Texas Tech hires Wells after success at alma mater Utah St

first_imgNovember 29, 2018 /Sports News – Local Texas Tech hires Wells after success at alma mater Utah St FacebookTwitterLinkedInEmailLUBBOCK, Texas (AP) — Texas Tech hired Matt Wells as its new football coach Thursday night after he was part of an impressive turnaround at Utah State, his alma mater.Wells had a 44-34 record in six seasons as coach of the Aggies, who are 10-2 this year and headed to their fifth bowl in that span. He was an assistant at Utah State the previous two years, going to bowls both times, including a school-record 11 wins in 2012 when he was offensive coordinator.“Quickly in the interview process, it became clear Matt Wells and his leadership style were a perfect fit to lead our football program,” athletic director Kirby Hocutt said. “We have a great future in store under Coach Wells, and I firmly believe he is the right coach to take us to an elite level.”The 45-year-old Wells replaces Kliff Kingsbury, the former Texas Tech quarterback who was fired after his third consecutive losing season and a 35-40 overall record in six seasons as head coach.The Red Raiders were 5-7 this year, losing their finale 35-24 to Baylor last Saturday with a chance to become bowl eligible.“My family and I are excited to join the Red Raider family,” Wells said. “I am excited to meet the team and get to work on building an elite program that Red Raider fans will enjoy every Saturday.”Texas Tech said Wells is bringing offensive coordinator David Yost and defensive coordinator Keith Patterson with him from Utah State.For Texas Tech fans used to big-scoring offenses, the Aggies this season are third nationally with 47.2 points a game to trail only Oklahoma and Alabama. They have an NCAA-best 24 scoring drives of under a minute.Utah State also is solid on defense, allowing only 23 points a game. The Aggies have allowed at least 30 points only three times, including their losses to then-No. 11 Michigan State in the season opener and 33-24 at then-No. 21 Boise State last week in a game for a spot in the Mountain West Conference championship game. That ended the Aggies’ 10-game winning streak.The Aggies have an NCAA-best 18 interceptions, six of them returned for touchdowns. They have also recovered 10 fumbles, and their plus-11 turnover margin is among the best in the country.Earlier this week, Wells was voted Mountain West Conference coach of the year for the second time.Wells has been a player (1993) or coach (2012-14) for all four of Utah State’s bowl wins. He was a Utah State quarterback from 1993-96.His coaching career started at Navy from 1997-01, before going to Tulsa (2002-06), New Mexico (2007-08, 2010) and Louisville (2009) until joining former head coach Gary Andersen’s staff at Utah State in 2011. Associated Press Tags: Matt Wells/Utah State Aggies Football Written bylast_img read more

UVU Men’s Basketball To Play Kentucky In November Showcase Game

first_imgJuly 23, 2019 /Sports News – Local UVU Men’s Basketball To Play Kentucky In November Showcase Game Written by Tags: Big Blue Showcase/Kentucky Wildcats/Lamar/Mount Saint Mary’s/Rupp Arena/UAB/UVU Men’s Basketball FacebookTwitterLinkedInEmailOREM, Utah-Tuesday, Utah Valley University men’s basketball confirmed a game against Kentucky at the Big Blue Showcase this upcoming November at Rupp Arena in Lexington, Ky.This four game event hosted by the University of Kentucky, also features the Wolverines playing UAB November 16 at Birmingham, Ala. and at Mount Saint Mary’s November 26 at Emmitsburg, Md.The Wolverines will also host the Lamar Cardinals November 21 as part of this showcase.This will be Utah Valley’s second all-time game against Kentucky, with the Wildcats prevailing 73-63 in 2017.The Wolverines will play Lamar for the third time in their history with the series tied 1-1 all-time.Utah Valley’s games at UAB and Mount Saint Mary’s will be the first all-time in either program’s history. Brad Jameslast_img read more

Jazz survive late rally, edge Pistons 117-105

first_img Tags: NBA/Utah Jazz Written by FacebookTwitterLinkedInEmailSALT LAKE CITY (AP) — Donovan Mitchell scored 32 points to lead the Utah Jazz to a 117-105 victory over the Detroit Pistons.Mike Conley added 20 points and Bojan Bogdanovic chipped in 18 for Utah, which reclaimed the NBA’s best record with the Los Angeles Clippers loss to the Brooklyn Nets earlier on Tuesday.Royce O’Neale tallied 12 points and 13 rebounds. The Jazz (16-5) won their ninth straight home game.Jerami Grant scored 27 points to lead Detroit and Josh Jackson added 22. Mason Plumlee totaled 17 points and 14 rebounds for the Pistons. Detroit (5-16) lost its second straight game. February 3, 2021 /Sports News – Local Jazz survive late rally, edge Pistons 117-105 Associated Presslast_img read more

Snow Men’s Basketball Routs Casper Friday Night

first_img Brad James Written by February 6, 2021 /Sports News – Local Snow Men’s Basketball Routs Casper Friday Nightcenter_img FacebookTwitterLinkedInEmailEPHRAIM, Utah-Ross Reeves netted 22 points and 5 rebounds and the Snow Badgers smacked Casper CC 104-84 Friday at the Activity Center in non-conference men’s basketball action. Travis Wagstaff added 20 points on 8-16 from the field for the Badgers, who improved to 5-2 with the win. Snow shot just under 55 percent from the game. John Hart led the Thunderbirds in defeat with 21 points on 8-16 from the field. Snow commences Scenic West Athletic Conference play Tuesday at 7:00 pm against the College of Southern Nevada Coyotes t the Activity Center.last_img read more

Montana beats Weber St. 80-75 in Big Sky quarterfinals

first_img FacebookTwitterLinkedInEmailBOISE, Idaho (AP) — Robby Beasley III had 23 points as Montana edged past Weber State 80-75 in the Big Sky Conference Tournament quarterfinals.The sixth-seeded Grizzlies (15-12) play No. 2 seed Eastern Washington in the semifinals.Seikou Sisoho Jawara led the Wildcats with 18 points. March 12, 2021 /Sports News – Local Montana beats Weber St. 80-75 in Big Sky quarterfinals Associated Press Written by Tags: Big Sky/Big Sky Tournament/Montana Grizzlies/Weber State Wildcats Basketballlast_img read more

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