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楼主:飞管家健康门户 时间:2019年03月25日 05:30:28 点击:0 回复:0
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Einstein realizes his thoughts on gravity might explain Mercurys orbit in ways that Newtons law could not.爱因斯坦意识到他的重力思想可以解释水星的轨道,而牛顿定律不能。Was Newton wrong?牛顿错了吗?Einstein says maybe its my theory of gravity.爱因斯坦称它也许是我的重力理论。Is this simple enough to explain all these experimental data?简单的足以解释所有这些实验数据?He calculated painfully the orbit of Mercury and there was a near perfect match.他痛苦地计算水星轨道并且有一场近乎完美的匹配。His equations on a notepad match the motion of heavenly bodies in outer space.他在一个记事本上的方程式和在外层空间运动的天体相匹配。He has heart palpitations and he suddenly realizes,他心有余悸而他突然意识到,oh my god, the theory is correct.哦,我的上帝,理论是正确的。He was so filled with joy that he couldnt make his brain focus.他是如此充满欢乐,以致于他无法使自己的大脑集中。And for Einstein, thats a big deal.对于爱因斯坦而言,那是一个大问题。He finally gets the equations right just as David Hilbert does.他终于得到了方程式,就如大卫·希耳伯特做的那样。There is a little bit of dispute who got the equations first.对于谁第一得到方程式有一点争执。Theres a lot of rancor at that moment. Einstein gets so hurt.那一刻有很多怨恨,爱因斯坦变得如此伤心。Hilbert was very gracious.而希耳伯特很亲切。He says its Einsteins theory.他说这是爱因斯坦的理论。注:听力文本来源于普特201205/181426Technology firms and health care科技公司和医疗保健Heads in the cloud头文字;云;Digitising Americarsquo;s health records could be a huge business. Will it?美国的医疗记录数字化会是巨大商机吗?ALTHOUGH most rich countries, and some leapfrogging poor ones like India, are adopting electronic medical records, doctorsrsquo; surgeries in America still mostly do things the old-fashioned way. Determined to change this, the Obama administration has passed laws that will flood the health-care industry with billion in subsidies over the next few years to persuade doctors and hospitals to go digital. Aneesh Chopra, the White Housersquo;s chief technology officer, says the promise of this money is aly boosting investment. The big tech firms have convinced themselves that the health industry will be the next to embrace cloud computing.尽管大多数富裕国家以及一些有着跳跃式发展的贫困国家,比如印度,都采用了电子病历,但在美国,医生们的诊疗室多数仍按传统方式运行。奥巴马政府决心改变这一现状,他通过了一项即将遍及卫生保健行业的法律,投放280亿美元的补贴,说医院和医生在未来几年做到数字化(管理)。白宫的首席技术长官Aneesh Chopra宣称,(政府)对这笔资金的允若已经推动了投资,大型技术公司都确信,医疗行业将是下一个被纳入云计算的目标。In principle, it makes sense to put health records into the ;cloud;; the factories for mass-producing digital services that are the IT industryrsquo;s next big thing should be ideal places to store, maintain and process patient and clinical data. Doctorsrsquo; surgeries, hospitals and patients would all be able to retrieve and manipulate the data remotely, over the internet. Bridget van Kralingen, a senior executive at IBM, sees health care providing maybe one-tenth of the billion in revenues her firm sees from cloud computing by 2015.原则上讲,把医疗记录放到;云;里是有其意义的。IT行业的下一个大事件是,批量生产数字务的工厂,应该是放置、存储并处理病患和诊所数据的理想场所。医生的诊疗室、医院和患者都将可以通过网络远程检索及操作这些数据。IBM的高级执行官Bridget van Kralingen预见到,截至2015年,她的公司将从云计算中获得70亿美元的利润,其中的十分之一有可能来自医疗保健务。But some scepticism is in order. A scheme to computerise the medical records of every patient in England has turned into a spectacularly expensive fiasco. Gartner, a technology consultancy, observes in a recent report that tech firms are rushing to rebrand their products with the latest ;cloud; buzzword, ;whether they actually are cloud offerings or not.; The danger is that Americarsquo;s health services have foisted upon them whatever the industry has to sell, rather than what is needed.但是,存在一些质疑也是合理的。英国使用计算机处理所有患者的病历,结果该计划变成了烧钱的无底洞。高德纳技术咨询公司在最近的一份报告中注意到,无论是否提供云务,科技公司们都一窝蜂儿地用最近的热词;云;来重塑其品牌。危机之处在于,美国的医疗务不追求行业需求,而是一味骗售自己提供的所有产品。Another reason not to get too excited is the reflexive conservatism and technophobia of medical folk. Jonathan Bush, the boss of athenahealth, which uses the cloud to digitise health firmsrsquo; administrative systems, calls the medical industry ;anti-innovation;. He reckons the average American doctorsrsquo; surgery still handles 1,000 faxes a day.另一个让人不容乐观的原因,是下意识的保守主义和传统医学的技术恐惧。(医疗务公司)athenahealth的老板Jonathan Bush称医疗行业是;反创新;,他的公司利用云技术将保健公司的行政管理系统数码化。他估算到,平均每天,美国医生的诊疗室仍需处理1000份传真。201201/166849IT WAS not that noticeable amid all the razzmatazz. Many viewers missed it. But on February 5th, during the half-time show of the Super Bowl, the apogee of both the sporting and broadcasting year, MIA, a British pop star, unexpectedly sang ;I donrsquo;t give a shit; and raised a middle finger to the cameras. N, the network airing the show, swiftly apologised for her ;inappropriate gesture;. But that, said the Parents Television Council (PTC), which campaigns for more wholesome programming, was an inadequate response to what its members felt was a ;slap in the face; to families across America.在令人眼花缭乱的舞台上,可能不那么明显。很多观众都没看到。但是,在2月5号超级杯橄榄球赛的中场表演时,英国流行歌手MIA在这个体育与广播双高峰的舞台上出人意料地唱了《我他妈的不在乎》这首歌曲,并向镜头竖起中指。美国全国广播公司当时正在播放这场演出,即刻为她;失宜的手势;而道歉。但是倡导健康电视节目的美国电视家长协会认为这种行为对全美国的家长相当于;打了一巴掌;,而此道歉对于其成员来说是一个不恰当的回应。Whether any Supreme Court justices were watching, or considered themselves slapped, is unknown. As it happens, however, they are currently mulling over just this sort of incident. Last month they heard arguments in cases involving two other broadcast networks, Fox and A, which are challenging the Federal Communications Commissionrsquo;s restrictions on indecency. The broadcasters think their output should be free from any form of censorship, just as cable television and the internet are. In particular, they object to the FCCrsquo;s rules about ;fleeting expletives; (isolated, and in many cases, unscripted swearing) and brief glimpses of titillating body parts, which are subject to heavy fines. Those rules, in turn, were adopted in part thanks to the uproar prompted by the half-time show of a previous Super Bowl, in which the breast of another wayward pop star was momentarily bared, supposedly due to a ;wardrobe malfunction;.究竟有没有最高法院的法官当时在看电视,或者会认为他们被打了一巴掌,都是不可知的。然而,当这种事情发生的时候,他们肯定是在思考这类事件。就在上个月,他们刚听审完针对其他两个广播网络公司福克斯和美国广播公司的控诉,指责他们触犯美国联邦通信委员会对粗鄙行为的禁令。该广播公司们认为他们播出什么内容,应该像有线电视和网络一样自由。他们特别反对美国联邦通信委员会关于;短暂粗口;(偶尔出现的,在某些情况下,是脱口而出的粗口)和短暂走光的禁令,这两者都会招致巨额罚款。这些禁令依次在某种程度上都被实施了,因为在前一个超级杯橄榄球赛的中场表演上,另一位不守规则的流行歌手瞬间露乳,据称是因为;装故障;。The FCC has long barred profanity and nudity during waking hours, although it used to take a laxer attitude towards isolated incidents. The Supreme Court upheld its rules in 1978, despite their impingement on free speech, on the basis of a law banning smut on the radio. But the broadcasters complain that the FCCrsquo;s drive for decency is inconsistent, unnecessary and increasingly quixotic. Why, they ask, should swearing be permissible in some circumstances (broadcasts of ;Saving Private Ryan;, a gritty war film) but not in others (awards shows populated by foul-mouthed celebrities)? Is it really necessary to protect the public from swear words, when viewers can so easily vote with their remotes? Above all, while the court allowed the airwaves to be policed in 1978 because they were a scarce, publicly owned resource, does that still make sense in an era of cable, satellite and YouTube? After all, some 85% of households in America now subscribe to some sort of pay television, and almost 70% have broadband and thus face constant exposure to cursing and smut.美国联邦通信委员会长久以来一直禁止在清醒的时候说脏话和裸露身体,虽然它过去经常对偶发性事件抱有宽容的态度。最高法院在1978年根据一部禁止广播中出现淫秽内容的法律,表示持该委员会的禁令,尽管这些禁令侵犯了言论自由。但是广播公司抱怨称委员会对体面的追求前后矛盾,多余而且越来越不切实际。为什么,他们质疑到,粗口在某些情况下(如《拯救大兵瑞恩》,一部坚毅的战争片)是被允许的,但在其他场合(多由满嘴脏话的名流参加的颁奖晚会)上是不被允许的?在观众有权利选择想看的频道的情况下,真的有这个必要使公众免受粗口的干扰么?尤其是,法院在1978年决定电视广播需要接受监管时,是因为他们是一种稀缺的,公有的资源,而如今在这种有线电视,卫星和YouTube充斥的时代,这些监管还有必要么?毕竟,美国大约85%的家庭现在都订阅了某种方式的付费电视;几乎70%的家庭拥有宽带,从而不断的接触粗口和淫秽内容。Judging by their questions to the broadcastersrsquo; lawyers, however, not all the justices are convinced. All the government is asking for, said John Roberts, the chief justice, ;is a few channels where you;are not going to hear the s-word, the f-word;. Moreover, as the PTC points out, in spite of the proliferation of viewing options, broadcasters remain pre-eminent. Of the 100 most popular shows last year, 89 were on broadcast networks, not cable. Some 114m people watched this yearrsquo;s half-time show, making it;swearing, middle finger and all;the most widely seen television programme in American history.可是,从法官们向广播公司的律师们提的问题来看,不是所有的法官都信上述理由。首席法官约翰bull;罗伯茨说,政府所要求的是;几个不会传播脏话的渠道;。此外,正如美国电视家长协会指出的那样,尽管现在观众有更多的观看选择,广播公司们还是首选。在去年选出的100个最受欢迎的节目中,有89个来自广播网络,而不是有线电视。大约1.14亿人观看了今年的中场演出,这无疑使得演出上出现的粗鄙行为成为美国历史上传播最广的电视节目。201202/171489Science and Technolgy科技Mars exploration探测火星How to land a Mini on Mars如何让一辆微型汽车大的探测器在火星着陆The biggest and fanciest Mars rover so far will soon blast off from Florida迄今为止最昂贵、最大的火星漫游者将很快从佛罗里达发射升空EARTH excepted, the most probed and prodded planet in the solar system is Mars. Besides the assortment of craft that have flown by it or gone into orbit around it, three robotic buggies equipped with cameras and scientific instruments have roamed the Martian surface on behalf of NASA, Americas space agency, since 1997.除了地球,火星是太阳系里被人类探索得最多、最让人感到刺激的行星。除了各种飞过它的以及进入它附近轨道的飞船外,从1997年开始,三个装配了相机和科学仪器的探险车已经代表美国太空机构NASA漫游了火星表面。If all goes according to plan, they will soon be joined by a fourth. On November 26th a new rover, Curiosity, will ascend from Cape Canaveral. If it gets there in one piece, it will examine the climate and geology of Mars and look for any signs of life that might have arisen.如果所有一切都按计划进行,第四个将探险车将很快加入其中。11月26日,新的漫游者;好奇号;将从卡拉维拉尔角发射升空。如果它完好无损地抵达,它将考察火星气候和地质,并寻找可能出现的生命迹象。The first of NASAs rovers, Sojourner, which reached Mars in 1997, was 65cm long and weighed (on Earth, where the gravitational pull is 2? times Marss) 10kg. Spirit and Opportunity, its twin successors, were larger, at 1.6 metres and 170kg. Curiosity, by comparison, is a monster. At 3 metres and 900kg it is the size of a small car. It also uses different technology. The other three rovers were powered by solar panels. Curiosity is powered by plutonium. (Not a full-scale reactor, but a generator that turns the heat of radioactive decay into electrical energy.) This brings three advantages. First, it allows Curiosity to carry more power-hungry scientific instruments than previous rovers. Second, it permits the rover to work through the Martian winter. Third, it avoids the problem of dust accumulating on the solar panels, which gradually sapped the strength of its predecessors.1997年,NASA的火星漫游者;旅居者;到达火星,它长65厘米,重10千克(地球引力是火星的2.5倍)。其继任者,双胞胎;勇气和机遇号;比它更大(1.6米、170千克)。相比之下,;好奇号;就是个怪物。其3米长、900公斤重的尺寸就像一部小汽车。它也有不同的技术,之前漫游者由太阳能面板提供能量,;好奇号;由钚驱动(不完全是反应堆,而是一个将放射衰变产生的热能转换成电能的发电机)。这有三点好处:1、比起之前的漫游者,它能让;好奇号;带上更多的能耗大的科学仪器;2、它允许漫游者在火星冬季保持运转。3、它能避免让前几个漫游者的能量逐渐损耗的太阳能面板积土问题。Curiositys size makes getting it safely onto the Martian surface tricky. Previous rovers have deployed parachutes to slow their descents, and have then crashed into the ground using airbags to cushion their impacts. Curiosity is too massive for that approach to work. Instead, NASA hopes to deposit it on Mars using a contraption it has dubbed a skycrane.;好奇号;的尺寸使之能在火星复杂表面安全着陆。以前,漫游者打开降落伞减慢下降速度,在撞向地面时用安全气囊缓冲。;好奇号;大到这样的方法不能起作用。相反地,NASA希望利用一种精巧的被称为;天空起重机;的装置使其在火星着陆。As with the other rovers, Curiositys mother ship will rely on heat shields and air-resistance, and then on a parachute, to slow its arrival. But at an altitude of 1.6km a specially designed descent stage bearing the rover will drop away from this vehicle. The descent stage has eight rocket motors on its corners. These will slow its fall to a relatively sedate 0.75 metres a second. When it is about 20 metres above the surface, the rover will be lowered from it on wires and deposited gently onto the Martian landscape. The cables will then be cut with explosives, the descent stage will fly off and crash land elsewhere, and Curiosity will begin its mission.像其它几个漫游者一样,;好奇号;的母船将依靠隔热、耐大气擦的防护层,然后通过降落伞减速。但在1600米高时,一个特别设计的背负着漫游者的下降台从母船脱落,下降台的四角有8个火箭发动机,这些发动机把速度降到相对缓慢的0.75米/秒。离地约20米时,它将绑在线缆上的漫游者放下去,轻轻地在火星着陆。之后这些线缆将通过爆破切断,下降台飞走并在其它地方坠毁,;好奇号;开始它的任务。That, at least, is the theory. But the skycrane has never been used before, and there is plenty else that could go wrong. Indeed, Mars has something of a reputation for destroying spacecraft. Around half the missions sent there since the first Soviet attempts in 1960 have failed to arrive. A conversation on the subject in 1964, between a journalist and John Casani, a NASA scientist, spawned the idea of a Great Galactic Ghoul, a malevolent creature that prowls the space-lanes between Earth and Mars, dining on unfortunate spacecraft.这至少还是理论。除;天空起重机;从未用过外,可能出岔子的地方还有很多。火星有着宇宙飞船毁灭者的名声,自1960年苏联第一次尝试以来,约一半的登陆任务已经失败。1964年,NASA科学家约翰·卡萨尼与一名记者就这个问题有过一次对话,并得出了;星系食尸鬼;的概念——一个险恶的、徘徊在地球与火星之间航线的、以不幸的宇宙飞船为食的家伙。The ghouls latest victim appears to have been Phobos-Grunt, an ambitious Russian mission that was intended to return to Earth with a rock sample from Phobos, the larger of Marss moons. The Russian space agencys engineers lost contact with it soon after its launch on November 8th. Limited contact had been re-established as The Economist went to press, but it is not clear whether the mission can be salvaged. NASAs engineers, rationalists though they be, will be keeping their fingers crossed on Saturday, and hoping that the ghouls appetite has thus been sated, and that it will leave Curiosity alone.最近一个亡于;食尸鬼;的似乎是俄罗斯的;福布斯—土壤;。一个雄心勃勃的打算把火星较大一颗卫星——火卫一的岩石标本带回地球的任务。11月8日,在发射不久,俄罗斯太空机构的工程师与它失去了联系。本刊截稿时,他们已经重新建立起有限的联系。尽管是理性主义者,NASA的工程师还是会在周六祈祷,希望;食尸鬼;的胃已经填饱了,而不去理睬;好奇号;。 /201210/203628

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