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2020年02月23日 03:05:42来源:搜索新闻

Pakistan's female athlete Sadaf Siddiqu aims not high at the Olympics and says simply competing will be a dream come true as she hopes to inspire millions of girls back home.Lahore-based Siddiqui runs the 100 and 200 metres but as a wild card entrant she is allowed to compete in only one event and so will be lining up for the 100m heats in Beijing.The 22-year-old sprinter knows she faces red-hot competition from a star-studded line-up but promises to keep her head high and proud, even if she finishes last."I promise that I will not show an embarrassed loser's face, my head will be high and my face would be glowing because the Olympic spirit is to compete irrespective of results. For me it's an honour," the sprinter said .Siddiqui is one of just two female competitors in Pakistan's 37-member contingent for the Games, with 18-year-old Kiran Khan set to jump in the Olympic pool in the women's swimming.Pakistan is sending 21 athletes in total and 16 officials, according to the Pakistan Olympic Association.Siddiqui's best time for the 100m is 11.81 seconds, a Pakistani record she set in April, and 24.36 seconds in the 200m which are both a far cry from top international standards. 巴基斯坦女运动员萨达夫#8226;西迪基对自己在北京奥运会上的成绩没有抱太高期望,她说能参加奥运就是梦想成真,因为她希望自己回去后能激励国内许许多多有梦想的女孩。来自拉合尔的西迪基是女子100米和200米短跑运动员,但作为一名“外卡”选手,她只能参加一个项目。在本届奥运会上,西迪基将参加100米短跑项目比赛。这名22岁的短跑小将知道自己将与世界级选手展开激烈的竞争,但她说即使跑最后一名她也会高昂着头,并会为此感到自豪。她说:“我保不会让大家看到一张沮丧的失败者的脸,我会高昂着头,神采飞扬,因为奥林匹克精神倡导的就是不计结果的竞争。对于我来说,这就是一种荣誉。”西迪基是巴基斯坦派出的37人代表团中仅有的两名女运动员之一,另一位是18岁游泳小将卡兰#8226;汗。据巴基斯坦奥委会介绍,巴基斯坦派出的奥运体育代表团包括21名选手和16名官员。西迪基100米短跑的最好成绩是11.81秒,这也是她于今年四月创下的巴基斯坦全国新记录,她200米短跑的最好成绩是24.36秒,两个项目的成绩都远不及世界顶级水平。 /200808/45580。

  • Altruism(1), one of the most difficult human behaviors to define, can be detected in brain scans, U.S. researchers reported on Sunday.They found activity in a specific area of the brain could predict altruistic behavior -- and people's own reports of how selfish or giving they are."Although understanding the function of this brain region may not necessarily(2) identify what drives people like Mother Theresa, it may give clues(3) to the origins of important social behaviors like altruism," said Scott Huettel, a neuroscientist(4) at Duke University who led the study.They set up an experiment in which they put 45 college students into a functional magnetic(5) resonance(6) imaging scanner, which can take real-time images of brain activity.They gave the students various games to play, and told them that winning earned cash for either themselves or for a charity. The students had chosen the charities beforehand(7) from a list, the researchers report.The students reacted differently depending on whether they won for themselves or for charity with the ones who described themselves as altruistic responding more strongly."The game involved reacting as fast as one can to the appearance of a target; if one responds fast enough, then money was earned," Huettel said.The task was fairly simple, and the students did not give up any payments to themselves to give to the charities. But it cost enough effort that Huettel believes it did represent altruistic intent."Conversely, trying to watch people in their daily lives would make data collection nearly impossible. So, we settled on(8) self-reports as a good, albeit(9) imperfect, measure."Huettel believes it is valid(10) to try to assess altruism scientifically."It is hardly the case that all altruistic acts come from people who are religiously faithful; there are undoubtedly many altruistic atheists(11)," He said."And, a religious explanation would have considerable(12) difficulty explaining why some animals help others of their species at significant cost or danger to themselves."Next his team hopes to test children, and find out how and when altruism develops. 周日,美国研究人员称,最难解释的人类行为之一—利他主义可以通过脑部扫描探测。他们发现脑部一块特殊区域的活动能预示利他主义行为—身体自己汇报自私度或者利他度。本研究组长、杜克大学神经学家Scott Huettel说:“尽管对这部分脑功能的认识还无法解释到底是什么可以让人们像德兰修女一样,但却能让我们更加靠近诸如利他主义这样的重要社会行为的根源。”研究人员将45位大学生送入能够实时记录脑部活动的功能磁共振成像扫描仪。他们让学生们玩不同的游戏,并每次让他们选择赢的钱是留给自己还是捐献福利机构。游戏开始前学生们可以从列表上选择受捐赠的福利机构。选择不同受益者,游戏结果大大不同,同时自称是利他主义者的学生的反应更为强烈。Huettel说:“其中一个游戏是让学生目击突然出现的目标,如果反应够快就能赢钱。”任务都很简单,学生们在此过程中不会有任何金钱损失。但是Huettel认为学生付出的努力足可以代表他们的利他意图。“相反地,通过观察人们的日常生活搜集数据几乎是不可能的。所以,我们认为自我汇报是一种虽然不完美,但还不错的方法。”Huettel认为这是评估利他主义的科学有效途径。他说:“并非所有的利他行为都来自有宗教信仰的人;毫无疑问太多无神论者同样是利他主义者。”“而且,宗教无法解释为什么有些动物会付出很大代价、冒很大风险帮助同类。”下一步,他的团队希望测试儿童,试图发现利他主义行为是从何时、如何发展的。 /200805/39176。
  • NASA scientists have discovered at least seven Earth-sized planets, each potentially capable of hosting life, orbiting a nearby star just outside the solar system.美国宇航局的科学家们发现,至少有七颗地球大小的行星围绕着太阳系外的一颗临近恒星运行,每颗行星都可能适宜生命体生存。The exciting discovery announced Wednesday has been deemed one of the first realistic opportunities to begin a search for alien life outside our system as well as the first time so many planets were discovered circling the same star.22日公开的发现激动人心,被视为开启探索太阳系外外星生物的首批现实机遇之一,也是人类首次发现如此多的行星环绕在同一颗恒星周围。The cluster of planets orbit a dim dwarf star, just barely the size of Jupiter, called Trappist-1. The group of planets are about 40 light years away which isn#39;t actually all that far away from Earth. The close proximity will allow the system to be studied in great detail, according to the release.这群行星围绕的暗矮星和木星差不多大,被称为特拉普1号。行星与地球相距约40光年,这样的距离实际上并不算遥远。据新闻稿称,在这样靠近的距离下,人类可以对该行星系进行详细的研究。Three of the planets or exoplanets as scientist call them, are receiving just the right amount of energy from the host star, meaning oceans of water could cover their surfaces. Scientists refer to the ideal zone just around the star as ;the habitable zone,; sometimes jokingly called the ;Goldilocks Zone,; as it is just right for supporting life.其中三颗行星(科学家们也称之为系外行星)从恒星接受到的能量恰到好处,这意味着它们的表面可能覆盖了大面积的液态水。科学家们将该行星系恒星周围的理想地带称为“宜居地带”,由于这里正好适宜生命生存,他们有时也将其戏称为“金发美女地带”。The other three bodies farther off from the star could feature smaller bodies of water and the seventh could even boast a puddle or two under ideal conditions.另外三颗离恒星较远的行星表面覆盖的液态水可能较少,理想条件下第七颗行星甚至可能只有一两个水坑。NASA#39;s space telescope Spitzer, an infrared telescope that trails the earth as it orbits the sun, revealed the new system.美国宇航局史匹哲天文望远镜发现了这个全新的行星系。史匹哲红外望远镜绕太阳运行,追踪地球。;This is the most exciting result I have seen in the 14 years of Spitzer operations,; said Sean Carey, manager of NASA#39;s Spitzer Science Center at Caltech/IPAC. ;Spitzer will follow up in the fall to further refine our understand of these planets so that the James Webb Space Telescope can follow up. More observations of the system are sure to reveal more secrets.;加州理工学院美国宇航局史匹哲科学中心负责人肖恩?卡雷称,“这是史匹哲运行14年以来,我看到的最令人兴奋的结果。”史匹哲将在秋季进一步完善我们对这些行星的了解,以便于詹姆斯?韦伯天文望远镜跟进。对该行星系的进一步观察必将透露出更多的奥秘。” /201702/494230。
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