学术英语摘要范文.doc

Text 4 Security Benefits of Cloud ComputingAbstract: Today, we can easily notice how the nature of the internet is changing from a place used to read web pages to an environment that allows the users to run software applications.Nowadays, with the development of web page ,the newest web page has up to web pages 3.0,also called the intelligent web ,which is the next stage of the internet evolution. the cloud means the internet .the term is derived from the way in which the internet is often represented into the network diagrams .the current cloud computing architecture involves the existence of the data centers that are able to provide services to the clients located al overthe world. the main advantages of the cloud computing are the following :there is no need to download or install a specific software and update the local system, users or clients dont afraid to the computing crashing, because everything is stored into cloud .the cost is low or even free ,like mobile phone or PDAs. the cloud computing can be used .but everything has its short leg ,there are some disadvantages as well, like :it is hard to integrate with the existing in-house infrastructure .there are not enough major suppliers in this field and so on.Some major Security benefits for individuals or companies, like the following: centralizing data storage ,increasing uncertainty, virtualization allows a rapid replacement of compromised server located into the cloud without major costs or damages .Today ,the information infrastructure is moving faster to a simple but very innovative concept called cloud computing. the cloud computing is potentially able to offer major security benefits.Key words :security ,cloud computing, advantages, benefits 云计算的安全优势摘要：今天，我们可以很容易发现如何在互联网的本质是从用于读取网页到一个环境，使用户能够运行应用软件的地方改变。如今，随着网页的发展，最新的网页有多达网页3.0，也称为智能网，它是互联网演进的下一阶段。云是指互联网。这个词是从在互联网上通常表示成网络图的方式获得。目前的云计算架构涉及到能够给客户提供服务的数据中心的存在，位于人在世界。云计算的主要优势有以下几点：无需下载或安装一个特定的软件和更新本地系统，用户或客户端不害怕的计算崩溃，因为一切都被存储到云计算的成本低甚至免费，如移动电话或PDA。，云计算可以使用，但任何事物都有它的腿短，也有一些缺点，如：它是很难与现有的内部基础设施的整合没有足够的主要供应商在这一领域等。为个人或公司，如以下一些主要的安全优势：数据集中存储，不确定性增加，虚拟化技术允许快速更换定位成云无重大费用或损失被攻陷服务器的今天，信息基础设施正在快速地简单，但。非常创新的概念，叫做云计算。云计算是潜在的能够提供重大的安全利益。关键词：安全，云计算，优点，好处Text 8 How Nanotechnology WorksAbstract:At the begin of this article,it states that there are unprecedented multidisciplinary convergence scientists dedicated to the study of a world so small that we cant see iteven with a light microscope and tells us the important of nanotechnology.Then in order to understand the unusual world of nanotechnology ,we need to get an idea of the units of measure involved.The long of one nanometer is so small.When we measure the atomic scale,we can find that its still small compare to the nannmeter.But in a lecture called “Small Wonders:The World of Nanoscience”,Nobel Prize winner Dr.Horst Stormer said that the nanoscale is more interstesting than the atomic scale because the nanoscale is the first point where we can assemble somethingits not until we start putting atoms together that we can make anything useful.Then the article states that some predictions of nanotechnology such as the use of the rule of quantum mechanics,nanorobot.It states that there great value in nanotechnology in future.Key words: nanotechnology value application in futureText 10 Global Warming and Its EffectsAbstract:Global warming has been a global issue for many years now. However, the most prominent effect of global warming exists in the climate change over the past years. It causes the oceans warmer, the intensity of hurricanes amplifies in power and devastation. Another area affected by global warming is the animal kingdom and nature.The number of animals has been decreasing and the various disease has spread to new regions across the globe. A third type of evidence of global warming can be found in plants. The leading cause of global warming is the ongoing burning of fossil fuels, which releases carbon dioxide into the atmosphere. Although carbon dioxide largely harms the environment, the other greenhouse gases have a large impact in the atmosphere. Throughout the world, various nations have been joining to help prevent or slow the process of global warming. The issue of global warming affects nature, people, and the economy. Scientists directly link disease to global warming. When people are trying to get others involved in the cause, a common problem that arises is the lack of motivation. In conclusion, the world needs to put forth a stronger effort to prevent global warming. And the mitigation of global warming, we should do from ourselves, from the little things around.Key words: global warming ，climate change ，effect 全球变暖以及它的影响摘要：现在全球变暖已经成为多年来的全球问题，然而，过去几年来全球变暖最突出的影响体现在气候变化上，它导致海洋变得更暖、飓风的强度和力量更强、冰川融化等等。全球变暖影响的另一个领域是动物王国和自然，它导致动物的数量急剧减少、疾病的传播更加广。全球变暖的第三类证据可以在植物中找到。全球变暖的主要原因是不断地燃烧化石燃料，这种燃烧会向大气中释放二氧化碳。不仅仅是二氧化碳，其它的温室气体也对大气有很大影响。在全世界，不同国家一直在努力防止或减缓全球变暖的过程。这个问题影响到自然、人和经济。科学家们直接把疾病和全球变暖联系起来，当人们努力让其他人参与到这项事业中，出现的一个共同问题是缺乏动力。总之，世界需要付出更大的努力以防止全球变暖。减缓全球变暖，我们应该从自己做起，从身边的小事做起。关键字：全球变暖，气候变化，影响 Text 11 Risks of Nuclear PowerAbstract：The principal risks associated with nuclear power arise from health effects of radiation.The radiation mainly comes form the radioactive material.They can penetrate deep inside the human body where they can damage biological cells and thereby initiate a cancer. If they strike sex cells, they can cause genetic diseases in progeny.But the rate of the latter is far less than the former. Reactor accidents is also one of the risk of nuclear power.But the nuclear power plant design strategy for preventing accidents ,back-up system and mitigating their potential effects is “defence in depth”, so they happen probability is exceedingly small. If they all fails,very high radiation doses can destroy body functions and lead to death within 60 days.The radioactive waste products from the nuclear industry must be isolated from contact with people for very long time periods. The bulk of the radioactivity is contained in the spent fuel, which is quite small in volume and therefore easily handled with great care. At other radiation problems，for example, exploitation of materials and transport of radioactive materials also produce radiation.The effects of routine releases of radioactivity from nuclear plants depend somewhat on how the spent fuel is handled.Key words：radiation，risks，reactor accidents，radioactive waste核电的风险摘要：核电的风险主要来自辐射对健康的危害，这些辐射主要来自于放射性材料。他们可以穿透人体深处,破坏生物细胞,从而引发癌症；如果他们破坏生殖细胞,可能导致遗传疾病。但是后者发生的概率远小于前者。核反应堆事故也是核电的风险之一，由于具有纵深防御的策略，它们发生的几率非常小。但是一旦发生，非常高的辐射剂量可以摧毁身体功能和在60天内导致死亡。核工业的放射性废物必须与人隔离很长时间，放射性的大部分包含在乏燃料，而且体积小，因此非常容易处理。在其它辐射问题上，如在核材料的开采和放射性物质的运输处理时也会产生辐射。但放射性物质从核电站释放的对人类健康的影响在某种程度上取决于它的处理方式。关键词：辐射、风险、核反应堆事故、放射性废品。Text 15 Genetically Modified Foods-Feed the World?Abstract: In fact, genetically modified foods are already very much a part of our lives. Although there are clearly some very real issues that need to be resolved. However, in developing countries which desperate to feed fast-growing and underfed populations, the issue is simpler: do the benefits of biotech outweigh the risks? There are nearly 800 million people around the world are undernourished. Biotech can also improve farming productivity in food shortages places. Many scientists believe biotech could raise overall crop productivity in developing countries as much as 25%.But in developing countries, poverty plays the largest role. Nor can biotech overcome the challenge of distributing food in developing countries