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南京市溧水区比基尼脱毛价格句容市人民医院激光去痘多少钱扬州市第一人民医院做祛疤手术多少钱 A cosmic constant known as the ‘golden ratio’ is said to be found in the shape of hurricanes, elephant tusks and even in galaxies.据悉,在飓风的漩涡形状、大象的长牙甚至星系中都可以发现那个被称为“黄金分割率”的宇宙常数。Now researchers say this ratio is also seen in the topology of space-time, affecting the entire universe as a whole.现在,研究人员表示,这一比率也可在时空的拓扑结构中发现,影响着整个宇宙。And they say this number can be used to link everything in the universe together, from space-time to chemistry to biology.他们同时谈到,这个比率可用于将宇宙中的一切事物联系到一起,从时空到化学,再到生物。The research was carried out by Dr Jan Boeyens at the University of Pretoria and Dr Francis Thackeray of the University of the Witwatersrand in South Africa.该研究是由南非比勒陀利亚大学的扬·布因思士和威特沃特斯兰德大学的弗朗西斯·萨克里士共同完成的。They say the golden ratio - 1.618 - can be seen ‘related not only to aspects of mathematics but also to physics, chemistry, biology and the topology of space-time.’他们说,可以看出黄金分割率——1.618“不仅与数学方面有关,还与物理、化学、生物和时空的拓扑结构有关”。And it may dictate how certain things in the universe take shape.而且这一比率可能决定了宇宙中特定事物的成形。The golden ratio, represented by the Greek letter #39;phi#39;, is said to be a mathematical connection between two aspects of an object.据称,黄金分割率,用希腊字母Φ表示,是一个物体的两个方面之间的数学联系。It can be artificially used – for example, some 20th century artists used it for the rectangular shape of their portraits from the long side to the short side.这一比率可被人为地利用:比如一些20世纪的艺术家用它来决定矩形肖像画的长边和短边的边长。They believed that the ratio created an aesthetically pleasing appearance.他们相信,这种比率创造一个美观的外观。But the ratio is not just artificially created – it is apparently found through nature in the stems of plants, skeletons of animals and so on.但是这个比率并不仅仅是人为创造的,很显然,在大自然中也可以发现这一比率,包括植物的茎和动物的骨架等等。And the shape of spirals also seem to follow the golden ratio. This suggests that geometric shapes in the universe ultimately succumb to this mathematical property.而且,螺旋的形状也符合黄金分割率。这表明,宇宙中的几何形状最终还是屈于这个数学属性。‘A convincing case for assuming a cosmic character of the golden ratio can be made based on the ubiquity of logarithmic spirals,’ the researchers write.研究人员写到:“假定黄金分割率具有宇宙属性,最具说力的例子是无处不在的对数螺线。”‘Spectacular examples include the Whirlpool Galaxy (M51), ammonites, the shape of Nautilus shells, Hurricane Katrina and the distribution of planets, moons, asteroids and rings in the solar system.’突出的例子有漩涡星系(M51)、菊石、鹦鹉螺贝壳、卡特里娜飓风以及太阳系中行星、卫星、小行星和行星环的分布。The researchers suggest that the reason that this ratio is so ubiquitous is that it is actually a property of space-time.研究人员称,黄金分割率之所以无处不在,是因为它是一个时空特性。‘The argument that this amazing consilience (self-similarity) arises from a common environmental constraint, which can only be an intrinsic feature of curved space-time, is compelling,’ they write.他们写到:“这一惊人的契合(自相似性)源自一个常见的环境限制,即这只能是弯曲时空的固有特性。这个论点令人信。”‘The time has come to recognise that relativity and quantum theories can be integrated, and linked numerically to the value of a mathematical constant - whether in the context of space-time or biology’“时代变迁,现在,我们应该认识到相对论和量子论可以相结合,并且在数值上与一个数学常量的值相联系,不论是在时空还是在生物学的背景下。”Why the universe follows this rule, however, is not known.但是,我们还不知道为什么宇宙遵循这个规律。Some think that our fine-tuned universe is simply a lucky coincidence and, under the multiverse theory, there are an infinite number of other universes that were not quite so lucky.一些人认为我们的这个“微调过的宇宙”只是天缘巧合,根据多重宇宙论,还有无数个宇宙就没有这么幸运了。 /201412/347244Samsung, LG and Google have pledged to provide monthly security updates for smartphones running the Android operating system.三星、LG和谷歌已经承诺每月都对使用安卓操作系统的智能手机进行安全升级。In July, a major bug was discovered in the software that could let hijackers access data on up to a billion phones. Manufacturers have been slow to roll out a fix because many variations of Android are widely used.七月份,安卓软件出现故障,黑客可利用该故障获取数十亿手机上的数据。由于各种版本的安卓系统得到广泛的应用,制造商未能及时推出解决方案。One Android expert said it was ;about time; phone makers issued security fixes more quickly. Android has been working to patch a vulnerability, known as Stagefright, which could let hackers access a phone#39;s data simply by sending somebody a message.一名安卓系统专家表示,生产商发布修补程序只是时间问题。安卓系统一直在修补名为Stagefright的漏洞,黑客可凭借该漏洞向用户发送视频信息即可窃取手机数据。;My guess is that this is the single largest software update the world has ever seen,; said Adrian Ludwig, Android#39;s lead engineer for security, at hacking conference Black Hat.安卓首席安全工程师在黑帽安全技术大会上表示:“我认为这是世界上需要更新的最大的软件。”LG, Samsung and Google have all said a number of their handsets will get the fix, with further updates every month.LG、三星以及谷歌也表示他们的很多手机每个月都会更新以修补漏洞。Android is an open source operating system, with the software freely available for phone manufacturers to modify and use on their handsets.安卓是一种开源式的操作系统,手机厂商可以免费将软件安装在生产的手机上。The Google-led project does provide security fixes for the software, but phone manufacturers are responsible for sending the updates to their devices. Some phones running old versions of Android are no longer updated by the manufacturer. Many companies also deploy customised versions of Android which take time to get the updates.谷歌公司领导的该项目确实为软件提供修补程序,但是需要手机厂商将更新程序发送至其生产的设备。一些手机运营较老版本的安卓系统,手机厂商已不再为此类手机提供修补程序。很多公司配置的是定做的安卓系统,融合更新程序,仍须一段时间。Apple and BlackBerry can patch security problems more quickly because they develop both the software and the hardware for their devices. BlackBerry#39;s software is reviewed by mobile networks before being sent to handsets, while Apple can push updates to its phones whenever it wants.苹果公司以及黑莓公司能够更快的修复安全问题,因为这两家公司不仅生产设备的软件,还生产设备的硬件。黑莓公司将软件发送至手机时,会经过手机网络的审查,而苹果公司可以随时对手机进行更新。;The very nature of Android is that manufacturers add their own software on top, so there have been delays in software roll-outs,; said Jack Parsons, editor of Android Magazine.安卓杂志编辑 Jack Parsons表示:“安卓系统的一个特点是,生产商最后才安装软件,因此软件交付会有推迟。”;In the US it#39;s even worse because mobile carriers often add their own software too. There#39;s no real villain here, that#39;s just how the system works. But there will always be security concerns with software, so it#39;s right that some of the manufacturers are stepping up to deal with this now.;在美国,情况更糟糕,因为手机用户经常添加自己的软件。其实没有真正的坏人,关键是系统运作的方式。但软件的安全问题会一直存在。因此,厂商逐步解决这个问题,是正确的选择。 /201508/392222滁州市第一人民医院光子脱毛多少钱

无锡妇幼保健人民中心医院做丰胸手术价格Twitter is reportedly planning to abandon its famous 140-character limit and allow tweets up to 10,000 characters long.据报道,推特计划废除推文140字符的限制,允许字符数最多可达1万。The proposed 71-times increase in the limit, allowing tweets of roughly 2,000 words in length, would be the latest departure from the origins of Twitter since the social network#39;s co-founder Jack Dorsey returned as chief executive last year.扩充后的字符数是原来的71倍,这项提议如获实施,则意味着每条推文将最多可以有2000个单词。此举也将成为自联合创始人杰克·多西去年回归CEO职位以来,该社交媒体背离初创原则的最新举措。While Twitter is beloved by dedicated users in the media and public eye, it has failed to grow significantly in the last year while its major rivals Facebook and Instagram have stretched ahead.尽管有不少来自媒体和公众的死忠粉,不过推特去年的业绩并没有显著增长。而其主要竞争对手脸书和INS都领先于它。According to technology website Re/Code, Twitter plans to introduce the change towards the end of the first quarter of the year. Twitter has not confirmed this.据科技网站Re/Code报道,推特计划于今年第一季度末推出这项改革。推特尚未对该消息进行确认。The company has previously been reported to be raising the tweet limit above 140-characters, which was chosen when the service launched in 2006 to allow tweets and usernames to be received in a single text message, which had a 160-character limit.此前已有报道称推特将提升推文字符数至140字符以上。140字符的限制是该公司于2006年创立时提出的。当时之所以要这么做,是为了方便用户在短信中接收推文——每条短信有160字符数的限制。Users now experience Twitter via smartphone apps, rather than text messages, but the limit has been a defining hallmark of the service, allowing multiple tweets to be within a timeline. Extending the character limit is unlikely to mean enormous tweets appearing in feeds, however, with messages likely to be condensed to 140 characters and a ; more; option.现在用户主要通过智能手机应用收发推文,不再是以手机短信的方式。但140字符的限制已经成为推特的标志性功能,用户可以因此在同一时间线浏览多条推文内容。不过,增加字符数后,并不意味着用户看到的都将是超长推文:推文仍将被缩减至140字进行显示,用户可以通过点击“更多内容”按钮,进一步阅读详情。Still, reports of the move generated a mixed reaction to say the least.不过,用户对这项改革的看法褒贬不一,或者说,贬大于褒。If Twitter moves to 10,000 characters, email must move to 140 characters. It#39;s only fair. -- M.G. Siegler如果推特改成1万字符,那电邮就得改成140字符。这样才公平嘛。-- M·G·西格勒Even with 10,000 characters I wouldn#39;t be able to articulate all the ways Twitter has pissed off its users in the last twelve months. -- Neil S W Murray就算给我1万字符,我也罄竹难书推特过去12个月虐待它用户的各项罪行。-- 尼尔·S·W·穆雷The only time I want to use 10,000 characters on Twitter is to say no to this 5,000 times. -- Caity Kauffman我唯一能用到1万字符的地方,就是对这项改革说5000个“NO”。-- 凯迪·考夫曼 /201601/420262泾县医院口腔美容中心 南京玄武区激光美白肌肤多少钱

鼓楼医院激光去斑价格 Huawei, the Chinese telecoms company, has been given the all-clear over fears it may compromise UK national security.针对华为(Huawei)是否可能损害英国国家安全的担忧,这家中国电信设备制造商如今已经获得了“完全健康通知”。Risks from using equipment provided by the company have been “sufficiently mitigated”, according to the first report into the operation that vets its technology in the UK.针对华为在英国供应的技术,首份审查评估报告称,使用该公司所提供的设备的风险已被“充分缓解”。Huawei is one of the UK’s largest providers of telecoms equipment, with deals in place to provide critical national infrastructure as well as the technology behind services from companies such as BT, EE, Virgin Media, O2 and Sky.华为是英国最大的电信设备供应商之一,按照已经签署的协议提供关键的国家基础设施,也向英国电信运营商,如英国电信(BT)、EE、维珍媒体(Virgin Media)、O2和Sky,提供技术设备。However, concerns have been raised in countries such as the US and Australia about potential links to the Chinese government and the People’s Liberation Army in spite of strong denials from the group.不过,在美国和澳大利亚等国家,有人对于华为与中国政府和解放军的潜在联系提出了关切,尽管该集团强烈否认存在这种联系。A cyber security evaluation centre in Banbury was established in 2010 by Huawei to take apart the physical equipment and software used in the UK to mitigate risks to national security.2010年,华为在英国班伯里(Banbury)建立了一个网络安全评估中心,负责分解并剖析在英国使用的硬件设备和软件,以缓解对国家安全构成的风险。In the report for the national security adviser, the centre’s oversight board said the “technical assurance” provided by Banbury was of “sufficient scope and quality to meet its obligations”.该中心的监督委员会在提交国家安全顾问的报告中表示,班伯里提供的“技术保”具有“足够的涵盖范围和质量,足以履行其义务”。Huawei has also pledged further funds to expand the centre.华为还承诺提供更多资金以扩大这个中心。A management audit by Ernst amp; Young showed the centre was sufficiently independent from Huawei, which will address concerns about the centre and its staff being fully funded by the Chinese group.安永会计师事务所(Ernst amp; Young)的一项管理审计显示,该中心已经足够独立于华为公司,这将化解有关该中心及其工作人员完全由这家中资集团资助的担忧。Three concerns were identified by the report, although these were rated as “low risk”. They included difficulties in recruiting staff owing to a lack of cyber security skills as well as the reluctance of potential new recruits to complete security clearance.报告提出了三项关注,尽管它们都被评为“低风险”。它们包括:缺乏网络安全技能所导致的招聘困难,以及潜在的新聘人员不愿接受安全审查。Ernst amp; Young found some staff working at the centre without developed vetting clearance — the most comprehensive type of security vetting — although this has now been reduced to just two.安永发现,在该中心工作的一些工作人员尚未通过“高度审查”(developed vetting,简称DV),即最全面的安全审查,尽管其人数已减至两人。The report also found “tensions” between teams working in the centre and the Huawei response team in Shenzhen, but decided they did not have a “detrimental effect on the security of the UK networks”.报告还发现,在班伯里中心工作的团队和华为在深圳的响应小组之间关系“紧张”,但得出结论认为,这并未“对英国网络安全造成不利影响”。Senior government representatives visited Huawei in Shenzhen in January 2015, according to the report, when the company provided further reassurances.报告称,英国政府高级代表2015年1月在深圳走访了华为,当时该公司提供了进一步的保。David Pollington, former Microsoft cyber security expert, has been lined up to replace retiring chief Andy Hopkins at the Banbury centre.微软(Microsoft)前网络安全专家戴维#8226;波林顿(David Pollington)已被任命为班伯里中心的下一任负责人,接替即将退休的首席安迪#8226;霍普金斯(Andy Hopkins)。Huawei has also sought to alleviate concerns over corporate governance with the appointment of former BP chief executive Lord Browne to head a UK board of directors to oversee British operations.华为还任命英国石油(BP)前首席执行官布朗勋爵(Lord Browne)执掌一个英国董事会,由其监督在英业务,以求减轻有关公司治理的担忧。In a statement, Huawei said it was “pleased to be playing its part in providing reassurance to its UK customers of the quality of our products and solutions”.华为在一份声明中表示,该公司“很高兴能够发挥自己的作用,就本公司产品和解决方案的质量向英国客户提供保”。 /201503/366743江苏南京做眉弓常州市第二人民医院激光祛斑手术价格




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