当前位置:黑龙江地方站首页 > 龙江新闻 > 正文


2017年09月22日 12:25:22    日报  参与评论()人

杭州市牙科医院治疗烤瓷牙牙齿治疗种植牙多少钱杭州拔牙后能种牙吗I met Pooja Sankar two years ago after she founded Piazza, a collaboration platform that facilitates class discussion among students and teachers. Starting with a few students at Stanford, Piazza now is used at top universities such as Stanford and Princeton and MIT and in 25 countries around the world. With .5 million in funding from Sequoia Capital and Bessemer Ventures, Sankar, 32, aspires to play a key role in the transformation of education. But before other entrepreneurs get too revolutionary in this field, she thinks we need to reassess technology#39;s role in education. Following an epiphany at the World Economic Forum in Davos, Sankar shares her view in this Guest Post.两年前,我见过普加·桑卡尔,当时她已创立了促进师生间课堂讨论的协作平台Piazza。起初,这个平台只是在斯坦福大学(Stanford)的一些学生中使用。如今,Piazza已被斯坦福大学、普林斯顿大学(Princeton)以及麻省理工学院(MIT)等顶尖大学所采用,并在全球25个国家得到应用。获得红杉资本(Sequoia Capital)和贝西默风投(Bessemer Ventures)的750万美元融资后,32岁的桑卡尔希望能在教育改革中大展拳脚。但在其他企业家涉足这一极具变革性的领域之前,她认为我们需要重新审视技术在教育中发挥的作用。根据对达沃斯世界经济论坛(the World Economic Forum)的感悟,桑卡尔在本期客座文章中分享了她的观点。As the founder and CEO of Piazza, I#39;m used to cheerleading for technology in higher education. But in the midst of an almost utopian optimism about online education that I witnessed in Davos, I found myself playing an unaccustomed role: gadfly.作为Piazza的创始人兼首席执行官,我习惯于为高等教育中出现的技术摇旗呐喊。在达沃斯目睹了大家对网络教育近乎乌托邦式的乐观后,我发现自已要扮演一个很不习惯的角色:牛虻。And since returning from Davos, I#39;ve distilled my heresies to this: Education is a personal journey, and right now we#39;re offering students an online jumble.从达沃斯回来后,我一直在酝酿着自己对这个领域的异端邪说:教育是一段个人旅程,而现在我们为学生提供的网络内容却杂乱无章。I rode into Davos on a spouse#39;s pass, and I#39;m not to the manner born. I came of age in interior India, where for seven years I didn#39;t talk to a single boy outside my family. Many girls in my town were married off by their parents at 16, some of them barely literate. The reason I got out? My father, an educated man, demanded that I study. He painted a picture of a life that was different from the one I could see just beyond the wall that separated our home from the street. Without that guidance, I would never have gone to IIT, Indian Institute of Technology.我在得到丈夫的允许后才来到达沃斯,而且我也不是天生就适合这一行。我在印度长大成人,其间有七年时间我从未与家人之外的任何一个男孩子说过话。我们镇上很多女孩子16岁就嫁人了,一些女孩子几乎不怎么识字。我为什么能摆脱这种生活呢?因为,我父亲受过教育,他要求我学习。他为我描绘了一种我从未见过的生活,一种不困囿于高墙大院的生活。如果没有他的指引,我就不可能到印度理工学院(Indian Institute of Technology)求学。At a session in Davos, Salesforce.com (CRM) CEO Marc Benioff and Sean Parker of Facebook (FB) and Napster fame hosted a roundtable focused on the question, ;What#39;s one global change you#39;d want to see?; Our panel focused on education, and all agreed that online courses showed great potential. The words ;disrupt; and ;revolutionize; were spoken solemnly and often. Then someone asked me -- as the person at the table least removed from the proverbial mud hut -- whether online education would have broadened my childhood horizons.在达沃斯论坛上,销售力网络公司(Salesforce.com)首席执行官马克·贝尼奥夫和社交网站Facebook前总裁、音乐交换网站纳普斯特联合创始人肖恩·帕克主持了一次圆桌会议,关注的问题是:“你希望看到怎样一种全球变化?”我们这个座谈小组关注的是教育问题,大家都一致认为网络课程潜力巨大。“颠覆”和“变革”是被人们频频郑重提及的两个词。当时有人问我——因为我至少已经走出了俗话所说的小土屋——网络教育是否本可以开阔我童年时期的视野。I had to answer, ;No.; What was really most important in my education was that at key moments, I was able to envision to the next step. And usually I did it with the help of a mentor, or at least someone who#39;d taken that next step before I had. The journey was personal, but guided. And that, more than access to any particular class or bit of educational content, was what saved me from the fate of early marriage and poverty that befell so many others.我的回答只能是否定的。回忆我的教育历程,真正重要的是,在许多关键时刻,我能憧憬自己的未来。它往往是得益于良师的帮助,或者至少得到过某个先驱的启发。这就是我的个人经历,好在有过他人的指引。这些指引比上任何特定课程或学习任何教育内容都更为重要,正是这些指引使我摆脱了像许多人那样早早嫁人和陷于贫困的命运。In the wealthy world, we have an oddly romantic view of students in the global south: If we can just put educational stuff in front of them, they#39;ll devour just as they would eat food if we airdropped it in during a famine.发达国家的人对第三世界国家的学生有一种奇怪的、不切实际的看法:只要把教育内容摆在他们面前,他们就会像灾荒时期收到空降食物那样饥不择食地吞下去。That#39;s the dream. The reality is: If online education is going to change outcomes on a global scale, we must think more broadly about students#39; actual needs. We need to think about their entire educational journey, not just the content or the classes we provide.这只是梦想。现实是:要使网络教育在全球范围带来变革,我们必须从更广泛的角度考虑学生的切实需求。我们需要考虑他们的整个教育历程,而不仅仅是提供教学内容或学习课程。Every student needs three things:每个学生都需要以下三点:First, the plan. Imagine a child in Africa trying to cobble together an educational plan out of a series of online courses. It#39;s impossible. Consider that Harvard and MIT have pledged million for online education. In addition to building online classes, some of that money should go toward helping students make iterative plans for their education, with help from advisory staff or current students. Who better than Harvard and MIT to help students around the world put together educational plans?第一,学习计划。试想,身在非洲的一个孩子正想方设法地从一大堆网络课程中胡乱拼凑出一个学习计划。这是不可能完成的。再来看看这个,哈佛大学(Harvard)和麻省理工学院已联手投资6,000万美元推广网络教育。除开设网络课程外,这些资金还将用于帮助学生制订学习计划,由教研人员或现有学生为他们提供咨询建议。这两家学府正通过努力帮助世界各地的学生制订教育计划,试问,还有谁比它们做得更好?Second, the peer group. If students don#39;t have peers struggling with the same material at the same time, they#39;re likely to feel alienated and hopeless. At Piazza, we see spontaneous peer group formation every time we run large online classes. Online educational software must become more social and immediate and fun. Imagine what a gift it would be to a girl in rural India to connect with other girls studying the same material in other parts of the world.第二,同龄群体。如果没有同龄群体一起学习、一起奋斗,他们会感到疏离和无望。在Piazza平台,每每开设大班学习课程时,我们总能看到学生们自发组成学习小组。网络教育软件必须越来越社会化、即时化和趣味化。试想,要是印度农村的小女孩能与世界上其他地方的小女孩一起学习同样的内容,那该是怎样的惠益啊。Third. the mentors. Last fall, I helped create WitsOn, an online community connecting 500 professional women with thousands of college students. Students asked the women questions about how they had managed their lives and careers. Interestingly, we saw many of the professionals eagerly learning from the students, many of whom were more accomplished than they were in certain facets of technology. This suggests a giant network of learners, with mentors and mentees learning simultaneously.第三,导师。去年秋天,我创建了网络社区WitsOn,为500位职业女性和上千名大学生搭建了沟通的桥梁。学生们踊跃提问,了解如何平衡自己的生活和工作。有趣的是,这些职场女性中有很多人热切地向学生们学习,她们发现很多学生在某些科技领域比她们更有作为。这就是一个庞大的学习者网络。三人行必有我师,大家自发地相互学习。I#39;m a big fan of learning online. But we aren#39;t being ambitious enough. If children in the developed world fall off the educational track, giving them computers is not going to help most of them. Education is more than lectures, assignments, and exams. It#39;s a means to envision a different life from the one you#39;re living. Let#39;s give every student a shot at that.我非常热衷于网络学习。但是,我们的目标不够远大。试想,在发达国家,如果有孩子脱离了教育的轨道,那么对大多数这样的孩子来说,仅为他们提供电脑是不足以帮助他们的。教育不只是听课、作业和考试。教育是憧憬未来、改变现有生存状态的一种方式。就让我们为每个学生都提供一次这样的机会吧。 /201302/226614杭州儿童口腔医院牙外伤 绍兴市第七人民医院看牙齿戴牙套多少钱

杭州牙齿不齐怎么办地球是太阳系从内到外的第三颗行星,也是太阳系中直径、质量和密度最大的类地行星。它也经常被称作世界。英语的地球Earth一词来自于古英语及日耳曼语。地球已有44~46亿岁,有一颗天然卫星月球围绕着地球以27.32天的周期旋转,而地球以近24小时的周期自转并且以一年的周期绕太阳公转。迪士尼有同名纪录片。Why the Earth Is Round地球为什么是圆的?Our never-thought to ask question for today is: Why is the earth round? Why not a cube? A cube? No,that#39;s silly. Is it? Why? Because;,because really big things like to be round for some reason. Exactly right.And that reason is gravity.今天,我们;从未想过的问题;是:地球为什么是圆的?为什么不是方形的?方形?那太可笑了。是吗?为什么?因为;;因为非常大的东西通常都是圆的。完全正确。这个原因就是重力。Think of it this way. Suppose the earth were a cube. Then some points on its surface would be farther away from the center than others. The corners, for example, would be much farther out than the rest.我们这样想,假设地球是一个立方体。而地球表面的某些端点离中间或其它端点比较远。比如,立方体的各个角离得很远。Since gravity works equally on everything, there would be a tendency to pull those uneven places down. The surface would even itself out. The only geometrical object in which every point on the surface is the same distance from the center is a sphere.由于重力对所有物质的作用是相等的,因此不均匀的地方会被向下拉。表面使其本身变得平均。唯一一个表面上的每个角到中心距离都相等的几何物体就是球体。But wait a minute,I#39;ve seen pictures of asteroids that have all sorts of crazy shapes.Why aren#39;t they round? Only because they aren#39;t big enough for gravity to be a determining factor. If an asteroid were to suddenly become as big as a moon, it would indeed rearrange itself gradually into a sphere.等一下,我看过很多行星的图片,它们都是奇形怪状的。它们为什么不是圆的?那只是因为行星太小,重力不能成为其决定因素。如果行星突然变得和月亮一样大,它就会真正重新安排逐渐变成一个球体。 /201201/168898杭州邵逸夫医院补牙什么价格 金华市中心医院口腔科

浙江大学医学院附属第二医院超声波洁牙冷光美白喷砂洁牙价格The default background for Microsoft#39;s Windows XP operating system -- a perfect blue sky full of cotton-candy clouds above rolling hills with impeccably trimmed grass and daffodils -- is the spring day we wish could last forever. 微软公司(Microsoft) Windows XP操作系统的默认背景是一副春日景象――湛蓝的天空上漂浮着棉花糖般的朵朵白云,绿草茵茵、水仙成簇的山丘连绵起伏――真希望这幅景象可以一直持续下去。And fittingly, many people wish the operating system would last just as long. Introduced in 2001, Windows XP became so successful that Microsoft extended its support for an industry record of 12 years. Yet come April 8, XP#39;s sunny day is over. 同样的,对于Windows XP操作系统,很多人也希望它可以一直运行下去。由于Windows XP操作系统在2001年推出后大受欢迎,微软公司将对该系统的持延长至了创业界记录的12年。然而,随着4月8日即将到来,XP系统的艳阳天将不复存在。At that time, Microsoft will cut off all user support and halt security updates, leaving the software vulnerable to newly discovered attacks. XP computers will still work, but the #39;Bliss#39; background image will just be a facade. The operating system will no longer be a safe place to work or play. 届时,微软公司将不再向Windows XP的用户提供持,并不再提供安全更新,这将令Windows XP上搭载的软件易于受到新型病毒的攻击。使用XP系统的电脑仍可工作,但是“春光明媚”的背景图片将成为假象。不管对工作还是而言,XP系统都不再安全。#39;Our guidance is that you need to get off XP. It#39;s really that black and white,#39; says Tom Murphy, Microsoft#39;s spokesman handling the end of XP support. The company#39;s party line is that Windows 8.1 -- the latest in Microsoft#39;s foray into touch-friendly interfaces -- is a #39;fully modern operating system.#39; 微软公司负责结束XP系统持的新闻发言人汤姆#12539;墨菲(Tom Murphy)表示:“我们的建议是,你应该放弃XP。这是毫无疑问的。”微软公司宣称,Windows 8.1是一款“非常时尚的操作系统”。 Windows 8.1是微软公司在触控界面领域的最新力作。Since Windows XP first gained popularity, other alternatives have arisen. There#39;s Windows 7, of course, and offerings from Microsoft#39;s rivals, Apple and Google. Where is the best place for an XP refugee to go? I#39;ve been weighing each option. 自从Windows XP开始风靡以后,其他的操作系统也不断地涌现了出来。目前在市面上除了Windows 7以外,还有微软公司的竞争对手苹果公司(Apple)和谷歌(Google)研发的操作系统产品。XP系统的原有用户应该何去何从呢?我权衡了每一种可能的方案。Moving to Windows 8.1 升级至Windows 8.1If you have any doubt that Microsoft wants everyone to move to Windows 8.1, just visit amirunningxp.com. Designed to detect if users are running Windows XP, the site immediately suggests XP users upgrade to Windows 8.1 or buy a new Windows 8.1 computer. 如果你对微软希望每名用户都升级至Windows 8.1的意图持怀疑态度的话,那么你可以访问网站amirunningxp.com。该网站能够对用户是否安装了Windows XP进行检测,它会马上建议XP系统的用户升级至Windows 8.1或者购买全新的Windows 8.1电脑。Lots of computers from the age of XP can technically run the latest version of Windows. You just need a 1 GHz processor, 1 GB of RAM and 16 GB of hard drive storage. The biggest catch is your display has to have 1024 x 768 resolution. You can download the Windows Upgrade assistant to see if your system meets the requirements. 从技术上讲,在XP系统诞生之际购买的很多电脑都能运行Windows系统的最新版本。你只需要1 GHz的处理器、1 GB的内存和16 GB的硬盘存储空间。最大的问题在于你需要拥有一台分辨率为1024 x 768的显示器。你可以下载Windows升级助手来查看你的电脑是否满足XP的系统需求。The Windows 8.1 upgrade DVD costs 0, and Microsoft has teamed up with a backup service called Laplink to offer a free and easy way to transfer files. Windows 8.1的升级DVD售价120美元,微软已经与一个名为Laplink的持务团队联手,推出了免费进行文件转移的务。If you don#39;t meet the system requirement, or view the upgrade process as a hassle, you could, of course, buy a new machine. But I am ambivalent to recommend Windows 8.1 to XP users. Microsoft revamped Windows, replacing the beloved classic desktop with a Start Screen of tiles that point to programs, files and services. You can still get to the desktop (there#39;s a Desktop icon), but there#39;s no Start in the corner. 如果你的电脑未能满足系统要求,或者你不愿为系统升级之事费心,你当然可以购买一台新电脑。但是,我对向XP用户推荐Windows 8.1颇感犹豫不决。微软对Windows系统进行了大刀阔斧的改革,把深受用户欢迎的传统桌面换成了由不同颜色的磁贴构成的开始界面,这些磁贴代表的是不同的程序、文件和务。你仍然可以回归到传统桌面(按桌面键),但是“开始”菜单已经不在传统桌面上了。Windows 8.1 is better than the original Windows 8 when it comes to the mouse and keyboard, and a forthcoming update will bring even more mouse-friendly enhancements, such as a close-window button inside apps. Ed Bott, Microsoft watcher and author of many Windows guides, says people should make the jump to 8.1, and that the next updates will make the system more similar to Windows 7. 在鼠标和键盘的使用感受上,Windows 8.1的表现要好于Windows 8,并且即将推出的更新版本还将带来更友好的鼠标使用体验,比如应用程序内的系统关闭按键等。微软监察员、多款Windows指南的作者艾德#12539;特(Ed Bott)表示,用户应该直接升级至Windows 8.1,今后的更新将令系统越来越像Windows 7。Moving to Windows 7 升级至Windows 7系统Still, Windows 8.1 may be a radical change of pace for old-school Windows lovers, which is why I think Windows 7 makes a lot more sense for XP exiles. 然而,对于守旧派的Windows粉丝来说,Windows 8.1带来的变化可能太大了,这也是为什么我认为Windows 7对XP的原有用户来说更合适。Despite Microsoft#39;s arguments that 8.1 is faster, safer and more reliable than Windows 7, everything in 7 is mostly in the same place as it was in Windows XP. You#39;ll find the traditional desktop, the trusty Recycle Bin and the Start Menu. 尽管微软声称,Windows 8.1比Windows 7更更安全、更可靠,但是Windows 7的大多数功能都与Windows XP处于相同的位置上。你能够在Windows 7中看到传统桌面、值得信赖的回收站和开始菜单。The problem is that, in its Windows 8 push, Microsoft has made Windows 7 harder to come by. But there still are two main ways to get it. The first and best choice is to buy a Windows 7 laptop or desktop from select manufacturer websites, including Acer, Dell, Hewlett-Packard and Lenovo. They aren#39;t featured prominently, but go digging in the business-products sections of the companies#39; sites and you#39;ll find them. Microsoft and the PC makers still provide support, too. Dell#39;s Latitude 330 and Acer#39;s Aspire V3 are both good choices under 0. 问题在于,在微软推广Windows 8的过程中,Windows 7越来越难觅踪迹了。但是,仍然有两个方法可以获取Windows 7。第一个方法―也是最好的方法―就是从电脑厂商的官网上购买一台Windows 7台式电脑或笔记本电脑,这些厂商包括宏基(Acer)、戴尔(Dell)、惠普(Hewlett-Packard)和联想(Lenovo)。电脑厂商并未对Windows 7电脑进行大张旗鼓的宣传,但是通过搜寻电脑厂商的销售官网,你一定可以找到这些产品。微软和上述电脑厂商也仍将为Windows 7提供持。戴尔的Latitude 3330和宏基的Aspire V3都是售价在700美元以下的不错选择。If you don#39;t want to buy new hardware, things get trickier. Microsoft doesn#39;t sell box copies of Windows 7 anymore. And if you buy the .99 version sold by online computer suppliers like Newegg, you don#39;t get Microsoft support. You will get security updates until 2020, however. 如果你不想购买新的硬件,事情就棘手多了。微软不向任何人出售盒装的Windows 7操作系统光盘。如果你从新蛋网(Newegg)等电脑产品网络销售商那里购买99.99美元的Windows 7版本的话,你不会得到微软的技术持。不过,在2020年前,你都会获得安全更新。Moving to a Non-Microsoft Camp 转移到非微软阵营Of course, there are other places to go if you venture outside of the world of Microsoft. 当然,如果你想走出微软世界,外面的天地也很精。If you#39;re willing to spend more money than the average Windows PC, there are Apple#39;s Mac computers, which run OS X. That system will take some learning, but once you get the hang of it, it has a ton of great features. Apple also offers free classes for new Mac users at its stores. 如果你愿意付比一般Windows电脑更高的价钱,那么你可以选择苹果公司搭载了OS X系统的Mac电脑。你需要学习才能掌握OS X系统,但一旦你熟悉了该系统,你会发现它拥有很多很好的功能。苹果公司还向新Mac用户提供免费的店内课程。Chromebooks tend to be cheap since they just run Google#39;s browser. If you just need email and the Web, Acer#39;s C720 Chromebook is plenty powerful -- and only costs 0. Chromebook更便宜些,因为这款笔记本只能运行谷歌的浏览器。如果你只需要阅读邮件、浏览网页的话,那么宏基的C720型Chromebook就非常强大了,并且它的售价只有200美元。For the extreme computer literate, there are Linux options like Ubuntu, which run fine on older Windows XP computers. However, installing Linux requires patience and many popular programs won#39;t work there. 对于电脑高手来说,他们可以选择Linux操作系统Ubuntu,该操作系统可以在更老的Windows XP电脑上良好地运行。然而,安装Linux系统需要一定的耐心,并且很多热门的程序无法在该系统上运行。You#39;re best bet is to buy a Windows 7 computer. Whatever path you do choose, don#39;t be sad: You can always bring that perfect spring day wallpaper with you. 你最好的选择就是购买一台Windows 7电脑。无论你选择哪种办法,都不要悲伤:你总是可以将春光明媚的背景用作电脑桌面。 /201403/282977 滨江区种植牙医院杭州拱墅区假牙价格



浙江杭州市喷砂洁牙哪家医院好天涯助手杭州隐形牙齿矫正专家 杭州维信口腔门诊部补牙什么价格 [详细]
杭州口腔医院美容冠需要多少钱 爱晚报浙江省中医院看即刻种植牙植骨全口缺失多少钱中医媒体 [详细]
浙江省人民医院口腔美容科度信息杭州蛀牙带牙套价格 杭州市老年病医院烤瓷牙全瓷牙瓷嵌体多少钱 [详细]
浙江省牙科医院牙科中心排名对话舟山口腔医院在哪里 普及知识杭州维信口腔医院治疗瓷贴面美容冠种植牙价格 [详细]


杭州龅牙牙套 浙江省人民医院治疗拔牙多少钱好医解答 [详细]
丽水哪个医院牙科好 杭州做牙齿哪家好 [详细]
杭州口腔医院超声波洁牙冷光美白喷砂洁牙价格 当当新闻杭州武警医院看补牙镶牙四环素牙怎么样好吗华龙生活 [详细]
华龙信息浙江杭州市牙齿整形哪家好 杭州哪个牙科医院最好医对话杭州齿科医院那个好 [详细]