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作业代写:Network virtualization

2018-04-03 14:22:29 | 日記
下面为大家整理一篇优秀的essay代写范文- Network virtualization,供大家参考学习,这篇论文讨论了网络虚拟化。当前社会,在许多金融机构中,开始出现了许多大型的数据中心。这些中心在运转的过程中,为了能够实现节约资源减少服务器占据空间的目标,会更多的应用虚拟化的技术,切实保证能耗的降低。但是,在虚拟化中,网络虚拟化的发展比较缓慢,落后于服务器虚拟化和存储的虚拟化。在信息技术发展的实践过程中,软件定义技术更加适合开展网络虚拟化,对于推动互联网行业的发展有著非常重要的作用。

In order to better meet the needs of people's life and the needs of production, network technology has been well developed. Traditional web technologies contain only a single data business, but now they have evolved into a service that includes multiple applications. Generally speaking, these services are provided by different suppliers, as a result, these services are difficult to use a single architecture, if for modify existing framework will become more complex. The reasons for the Internet's own technology will also impose certain restrictions on its mobility, which will make the extension performance of its router unmanifested. This will have an important impact on the development of new network technologies. In order to better adapt to the development of the society, to solve various problems of the network technology, network virtualization technology being developed, and gradually become an important part of the field of network development.

Network card virtualization is an important part of network equipment virtualization. Meanwhile, network card virtualization includes two parts: software network card and hardware network card. In the process of software network card virtualization, the main way is to use the software to control the virtual machine, and then realize the sharing of a network card. Using the software network card virtual network card can have a separate MAC address and IP address, and so on. All virtual network CARDS can be connected to a physical switch via a virtual switch. Then, the virtual switch device should forward its existing data from the physical network. Different functions such as security control can be realized on different bases. In the process of virtual server, the technology used is to simulate a virtual port through software, so that it can better adapt to the needs of the simulator.

In the network hardware equipment virtualization, mainly contains two aspects of content. The first is to perform the router's functionality in a traditional way of installing operations on an X86 architecture. The second is the virtualization of traditional network hardware devices. Depending on the hardware, the operating system of the network device will be customized, which will play an important role in improving the speed of the machine operation. With the development of network technology and social economy, how to provide low-cost network solutions has become a popular topic. Some companies have proposed the separation of operating system and hardware for the low price characteristics. So can effectively reduce the hardware platform of the constraints, can quickly occupy the market, at the same time, in order to effectively promote the use of large equipment port is small, reduce equipment investment, can also for physical device virtualization, the formation of multiple devices, and that in each device independent running normally. In order to carry out more effective management and control, it is possible to have multiple physical devices virtual as one, which will also have a better development prospect.

In the process of daily application, link virtualization is a widely used technology, which is widely used in link aggregation and tunnel protocol. Link aggregation, as a two-layer virtual technology, can bind multiple physical ports together so that a logical port can be formed. If the switch detects a certain failure in a physical port, the message work will terminate. On the basis of reanalyzing the port, select a redundant port to send. The application of link polymerization technology can effectively extend link bandwidth, which has certain effect on ensuring the practicability of link. The use of dual links is a good way to achieve network redundancy. After the calculation is completed, a link will be in the state of the Block. In this context, virtual road link polymerization technology is presented, which is of great importance to solve the problem that traditional aggregation ports cannot cross equipment and increase network bandwidth.

In the tunnel protocol, the content involved is mainly a technology or protocol subnet that USES another technology or protocol network to realize interconnection or data transfer. With the tunnel protocol, the data of other protocols can be integrated and repackaged, and the new frame header can be sent by the tunnel to provide effective router information. So anyone can send the data to the specified address and hide the network address of the intermediate node. Moreover, it can also carry out effective data encryption based on the actual demand.

Cascading networks, as the name suggests, build another network on an existing network, forming layers. This network allows some host router information that is not identified on the IP address. At the same time, the routing information can be applied to a particular node, but the IP address of this node is unknown in advance. With the application of cascade network, we can continuously excavate and make full use of existing resources without increasing operating cost, and provide better service. The most common is ADSL Internet access line, which is implemented on the existing PSTN network.

A common communication method between large and medium-sized enterprises and large groups is a virtual private network. The main thing is to use the common network architecture. Internet media, for example, USES this medium for information transmission. The main purpose is to use the encrypted tunnel protocol to achieve the purpose and effect of confidentiality, which can also realize the terminal authentication and ensure the accuracy of the information. In view of such technology could be effective security in an insecure network information transmission, in the process, we should attach great importance to information encryption sex, avoid not encrypted information being stolen.

Virtualization technology revolutionized the citic publishing house architecture of the application of practical design requirements of the structure, by applying the virtual and dynamic migration technique, has a higher requirement for network technology, to support a wider range of layer 2 domain. Generally speaking, the three-tier router can connect multiple data centers, and the two layer network communication is the basis for realizing the three-layer routing connection. Therefore, it is necessary to apply the virtual two-layer extension network.

To sum up, with the development of the network, more and more problems have been solved, and the virtualization technology has become an important means to solve these problems. At present, some research has been done on virtual network technology, and some achievements have been made. However, in the process of practical application, all kinds of problems can be easily encountered. Therefore, we should pay attention to innovative technologies and methods based on the actual situation, strengthen research on relevant issues and technologies, and find more effective solutions to relevant problems. In this way, the equilibrium of physical network resource distribution is better realized, and the efficiency of network resources is effectively improved.

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英国论文到底该如何选题

2018-04-03 14:22:04 | 日記
有调查显示,很多将要去英国留学的学生会非常担心自己的学业问题。其实有这样结果也是非常正常的,因为很多英国留学生绞尽脑汁才写出来的论文,却只能勉强及格,所以同学们会担忧也不是没有道理,当然,在同学们掌握了英国论文的写作之后,其实就难不倒大家了,今天就给大家讲一下英国论文的选题。

​首先,学生自己要非常清楚论文题目的意义。即论文论题的总结,好的论文题目就等于文章成功了一半。因为题目的功能是点明essay主旨,让老师一眼就可以看出文章讨论的基本问题。例如:The influence of theory of luxury market in China就知道主要是讲奢侈品在中国市场的影响力方向来展示论述的。

其次,一旦清楚了论文题目的意义后就可以为选择多种途径来选择题目了。总结了以下几种思路:

1、对自己比较感兴趣的方向

即从自己专长和兴趣入手确定选题。留学生可能对于同一科目,不同的知识要点可能有不能的见解和思考,或在实际活动中也有不同的感悟,对于同一个学科的认知深度是不同的,学生可以根据自己感兴趣的方面进行定题。

2、题材挖掘法

对于当今社会新闻,市场动态,以及学校教学的方向来去挖掘出来最具吸引力的热点题材进行定题。

3、边缘学科交叉定题法

将其他学科的研究成果与你将要定题的论文结合对比,可以让你视野更广阔的去提供一个比较接近学科的论文题目。

4、新角度的延伸法

即对同一问题不同角度并较有深度的总结论文的题目,让题目能更一步深化。

5、对比总结法

通过对论文学科中的不同问题进行多方面的比较研究来认识事物,进行总结出来论文题目。

看完了上述的分析后,你依旧不会选题吗?别再写了那么多的英国论文后回过头发现自己依旧不会选题。这样的经历很是尴尬,希望上述的分析对大家有所帮助哟!

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Paper代写:The color photography

2018-04-03 14:21:53 | 日記
下面为大家整理一篇优秀的paper代写范文- The color photography,供大家参考学习,这篇论文讨论了彩色摄影。长期以来,彩色摄影一直是摄影领域中一个有争议的话题。有些人认为这是一种失败的摄影形式,而有些人则认为彩色摄影可以从不同的角度呈现主题的意义。其实,黑白摄影呈现的是古典和复古的感觉,而彩色摄影在色彩的运用上显得更生动。两者对于摄影的环境是不一样的,不存在哪个更好。

​Having been discussed for a long time, color photography has always been a controversial issue in the field of photography. Some think it is a failure form of photography while some people think color photography can present the meaning of subject from a different perspective. As for me, I support the opinion that color photography can help to present whatever meaning photographer would like to present, and I’m a fan of Eggleston because he successfully laid the foundation of modern color photography and changed mainstream opinion on color photography from treating color photography as a low form of art to a widely acknowledgment of artist value of color photography in the field of photography.

In the article, the author firstly reviewed the meaning and function of photography from many artists way. Secondly, the author discussed the controversial issue of color photography with reference to the opinions of many mainstream photographers. At last, the author presented the art work of William Eggleston, the founder of modern color photography, to show how color photography presents the artist meaning by its application of color. I’ve got many reflections after the reading in three perspectives, including photography, color photography and Eggleston’s photography work.

About photography and color photography

In my opinion, photography is a kind of art form that records the very moment people want to reserve. Different angles, different selection of subject and different application of post processing can present different kinds of photography. I like photography because it gives me infinite opportunity to record my life and my experience. I like both black-and-white photography and color photography, because they present the photo in totally different ways and reflect different feelings—with black-and-white photography, photos can present a sense of classic and vintage and color photography presenting more vivid sense with the application of colors.

About Eggleston’s photography work

“He painted it red because he could not present his photo in a delicate form.” Ansel Adams, one of the most famous American photographers in 20th century, criticized William Eggleston’s signature work of “Red Ceiling”. “Red Ceiling” presented the image of a ceiling painted with bright red with a single white bulb in the center of the ceiling. This photo was also my first impression of William Eggleston. With the bold application with bright red, the photo presented me the image of a photographer with an aggressive mind. At the time of presentation of “Red Ceiling”, the mainstream opinion of photographers thought that it was not easy for color photographer to concentrate on the main meaning of the photo with people’s attention easily be distracted by pretty colors. However, the opinion was totally overthrown by the art work of Williams Eggleston. In the work of “Red Ceiling”, it was hard for audience to move their eyes from the white bulb right in the center of the ceiling. It was quite obvious in the photo of “Red Ceiling” that it was the bulb that was the focus of the photo. In the photo of “Red Ceiling”, the application of bright red color helped to concentrate more on the focal point instead of distracting audience’s attention. Therefore, the misunderstanding from photographers that color photography was a bad form of photo because of its distracting of audience’s attention was broke before “Red Ceiling”.

Like Red Ceiling, many other pieces of art work of Williams Eggleston also proved the fact that color photography could also present a good form of photo. With skillful application of light, composition and design, it would not be hard for color photo to concentrate on the focal point. Moreover, the application of color can even add some emotional implication on the picture with the help of color, like red presented a feeling of passion and even pressure, blue presented a feeling of pastoral and freedom, and orange presented a feeling of modern and fashion. Therefore, both color photography and black-and-white photography could present different styles, different feeling and different meaning photos.

想要了解更多英国留学资讯或者需要论文代写,请关注51Due英国论文代写平台,51Due是一家专业的论文代写机构,专业辅导海外留学生的英文论文写作,主要业务有essay代写、paper代写、assignment代写。在这里,51Due致力于为留学生朋友提供高效优质的留学教育辅导服务,为广大留学生提升写作水平,帮助他们达成学业目标。如果您有代写需求,可以咨询我们的客服QQ:800020041。

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Paper代写:The bike tyre

2018-04-03 14:21:34 | 日記
下面为大家整理一篇优秀的paper代写范文- The bike tyre,供大家参考学习,这篇论文讨论了自行车轮胎。自行车有两个轮胎,通常被认为是非常强壮和结实的。轮胎表面有重复的凸起纹理,覆盖在轮胎的每个压痕。这些纹理主要是为了实用目的而设计的,在一定程度上,它可以减少与地面的摩擦,避免被尖锐的岩石刺穿。它看起来有点复杂,因为它的几何多边形会在两个完全不同的多边形之间形成相同的间隔,而一组多边形会在轮胎上重复出现。

​It is very common for a teenager who lives in a distance away from his school and his parents happened to be busy with their work and cannot pick him everyday to have a bicycle. I, happened to be a typical of this kind of teenagers who have had a bicycle ever since I have learnt to ride in high school years. My parents drove me to the local bicycle store and I selected my own bicycle and since then I have cherished it. It is a mountain bike with a 13’ tyre. I would take a lot of time wipe the mud that have splashed onto it when it rains and buy certain equipments to decorate it. But one day, sadly, it had a puncture and needed patching up, and it was the time that I finally came to pay attention to its tyre. It has two tyre that are normally considered as very strong and stout, as they are somehow very big and thick compared to the ordinary bikes. It is all black and made of rubber that looks very tough and hard, and it is actually not hard, it is only because there are constructers made of iron inside it. There are also repeated raised textures on the surface of the tyre, consisting indentation that covers every corner of the tyre. Those textures are mainly designed for practical purposes, for example, to reduce friction with the ground and avoid being punctured by sharp rocks. They look a bit complex as the geometric polygons on it would form identical interval between two completely different polygons and a set of those polygons would be repeated all over the tyre. There are also more raised rubber that is made into the from of needles on the two side of the tyre, but they are already unevenly wore. Inside all of the intervals is mud that is already dried and stuck, making it look like an aged man whose body is cover with tattoos.

Ordinarily I would not consider it of any value of art or aesthetics, as it is completely functional and of practical uses—the riders who ride it would definitely need it. Even an outsider like me would understand the principle that is applied inside it. It cuts the superficial area the bike attaches to the ground and therefore reduce the friction it would produce to the tyre, helping the riders to ride faster and more smoothly. It also helps to cut down the abrasion that happened to the tyre, accelerate the heat radiation speed when friction accumulate heat on the surface of the rubber, protecting the tyre form possible damage that caused by excessive heating and abrasion as well as the rider from falling from it. I don’t know exactly how different kind of patterns on the surface of the tyre function, but the general uses is almost obvious for everyone with a little physic knowledge. What’s more, it is much too ordinary. Every bike has its own patterns on the tyre, and so does every car, every truck, every tyre has its own pattern. It is a mark of a tyre, a symbol and a representative besides the tyre man of Michelin. If I am fortunate enough to see a tyre without textures on it, I would definitely recognize it as a buoy on the ground. It is so common that I see it everyday without realizing, and people would pay little attention to such dirty and smelly thing on the street. The sportsman on the F1 range may pay great attention to it, but for a student like me, there is no time for me to stop in the middle of the street and stare at my bike wheel. Considering its situation and ordinary status in my mind, it is far too different from my definition of art. As the first principle for art in my opinion is that art should be attractive. It should arouse people’s attention to stop for it, in another word, it should in some extent, to have special meanings. No matter it is natural made or artificial, it would be obvious in its scene. However, in this point, art doesn’t contradict with ordinary, as it has to contain emotions, which is my second principle for it. Painters draw pictures, and they apply emotions and thoughts inside pictures, even though they portrait the natural scene in a very authentic way, people are capable to appreciate the emotions and feelings among the brush strokes, not to mention there are so many styles of paint works that require the painters’ creativities and ideas. Poets do the same thing, and the emotions and feelings vary in a lager extent. So that when a thing appeals to me but it doesn’t attract me or provide me with feelings, I feel boring and difficult to understand. The bike tyre is among those things, it is a product of industrial era, it is identical and it is no more than an accessory of a bike. It is somehow dull and common, if I buy another bike, I might be finding anther same tyre and same texture on the new one. It is just among the thousands of tyre that are produced on the assembly line by exhausted workers in the same uniforms.

However, it can be recognized from other aspects, one of which turns out to be the value it has brought with the world. Considering the reason why the wheels and the textures are brought onto the world, it is highly functional for this society, as it brought about connivence for people to transport. Though it has been quite a long time after bike was invented and there are so many other high technology in the field of transportation, people cannot deny the great influence the bike and its wheel has brought to the world when it was firstly invented. It provided a new method of vehicle free from living stocks as well as gasolines and fuel, All it needed was a person on it, and it would send the person on it to the place he wanted with only a little effort. Even when it comes to the modern society, it is a sign of environmental friendly, which turns out to be among the political correctness of today. Since objects are aesthetically valuable if they have the capability to help bring about social or political change, it is then very suitable to put the bike tyre and its textures in the position of aesthetically valuable.

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Essay代写:Beauty enhancement surgery

2018-04-03 13:45:56 | 日記
下面为大家整理一篇优秀的essay代写范文- Beauty enhancement surgery,供大家参考学习,这篇论文讨论了美容整形手术。长得好看的人通常会认为自己有优势,因为他们在这方面做了很多努力和投资。这种自信使他们变得更善于交际,有助于他们更容易交到朋友,并从人际网络中获得更多好处,所以如今很多人都会去做美容整形手术,这甚至已经成为美国的一种亚文化。对于某些人来说,美容整形手术是他们改变人生和职业生涯的起点。与收益相比,这点投资显然是微不足道的。

​Argument: Confidence is a valuable trait in the modern society. Being physically attractive will significantly increase one’s confidence both directly and indirectly.

For the 27-year-old Patrick Hardison, plastic surgery has been the key to the construction of his new life. The young fire-fighter had his face destroyed in a fire, together with his confidence. Enhancements in appearance through plastic surgery was his salvation (Dunn). There is no reason why this should not be the salvation of many others who suffer from lack of confidence.

People with enhanced physical appearances are usually aware of their advantages, since they make a lot of effort and investment in staying beautiful. Such an awareness unconsciously makes them more sociable and communicative. This helps them make friends more easily and benefit more from networking. (Rosenblat). People who look good are more willing talk to people and have a better ability of self-expression than others. The result of being beautiful and confident isn’t only psychological, as it has been found that beautiful people generally earn more than others (Rosenblat).

Moreover, beautiful people are perceived as politer, kinder, and more easy-going. A more positive attitude is thus adopted when communicating with them (Blass). People with better physical appearances are generally treated better by others, which indirectly boost their confidence and make them more successful in the daily interactions.

Reference:

Dunn, R. Firefighter Patrick Hardison Adjusts to New Face After Transplant Surgery. Accessed from: http://www.nbcnews.com/health/mens-health/firefighter-patrick-hardison-adjusts-new-face-after-transplant-surgery-n464456

Counterargument: It is a common perception that the investment made in appearance enhancement is a waste of money that can be better spent elsewhere. However, the truth is, investments on appearance are money well-spent.

Nowadays, plastic surgery has become a subculture of the US, with a TV show called Plastic of Hollywood being made. For the 12 stars featured in the show, being able to enhance their appearances is like a dream come true, which has led them to fame and wealth well beyond the investment made (Brennan). For people like Justin Jedlica, Vinny Ohh and Rodrigo Alves, plastic surgery has been their life-changing and career starting point. The investment made is onl a small amount for them compared with the benefits and gains.

From people not pursuing a career of fame in Hollywood, being better looking in the fierce competition of the job market does give people an advantage in the recruitment process. Beautiful women are hired more quickly, advanced faster, and earn better salaries than others (Griffiths).

Although a beauty enhancement surgery seems like a large sum of investment to make, it is calculated that good-looking people enjoy an increased benefit of over 200 thousand dollars from salary alone (Shellenbarger).

Reference:

Brennan, S. Models from the world's first agency for 'modified humans' have spent $3 MILLION between them on surgery to look like characters such as a Ken doll, Britney Spears and an ALIEN. Accessed from: http://www.dailymail.co.uk/femail/article-4544388/Plastics-Hollywood-spent-3-million-surgery.html

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