Thursday, March 19, 2020
The Internet as Social Media Connectivity and Immediacy essayEssay Writing Service
The Internet as Social Media Connectivity and Immediacy essayEssay Writing Service The Internet as Social Media: Connectivity and Immediacy essay The Internet as Social Media: Connectivity and Immediacy essay           Does the availability and use of social media on the Internet really provide businesses with new and different useful information?  Social media can be viewed as an effective tool to promote business. YouTube and other social media platforms provide massive opportunities for advertising campaigns, which help to attract more and more customers. However, social media may have negative impact on businesses as well, especially on business reputation. According to researchers, â€Å"with the web, opinions, facts, truth and lies can spread across the world as fast as a rumor or piece of gossip might have passed among the inhabitants of a small town 100 years ago†(Newson et al., 2009, p. 171). The case of Dave Carroll, a young Canadian singer, who travelled with his band from Toronto Canada to Nebraska, and faced serious problems with his baggage, hurt the United Airline s reputation to a great extent. Dave Carrol used social media to inform others about the United Airlines customer service, and he succeeded. Careless baggage handlers managed to break Dave Carroll’s guitar which cost $3.500. United Airlines refused to reimburse Dave’s repair bill of $1.200. Dave Carroll’s song â€Å"United Breaks Guitars†, which was posted on YouTube in the form of a humorous video clip, had more than 3 million viewers within two weeks. According to research, â€Å"by mid-2011the YouTube clip had accumulated well over 10 million views†(Fritz, 2012, p. 53). Today people have an opportunity to share their problems with others via social media platforms. Many customers use social media to voice their disagreement with customer services, hurting the reputation of many highly acclaimed companies. So, the availability and use of social media really provide businesses with new and different useful information, including negative comments and critical review about products and services, which may hurt the company’s reputation.           To start with, social media platforms play an important role in business communication, proving massive opportunities for customers to share their opinions about products and services. Social networking sites, YouTube, Twitter, blogging and other types of social media creates a serious threat to business reputation. The term â€Å"social media†is used to â€Å"describe online tools and utilities that allow communication of information online and participation and collaboration†(Newson et al., 2009, p. 49). Today social media tools make it difficult for businesses to monitor online reputation. Customers use social media to tell online users about their dealing with this or that business organization. According to researchers, â€Å"these online communications can be anything from a few comments to even a full scale campaign agai nst a business†(Newson et al., 2009, p. 172). There are many examples of negative impact of social media on businesses. 40 % of the well-known marketing brands had negative commentaries or critical reviews of customers, based on the online monitoring survey (Newson et al., 2009, p. 172).           Besides the above mentioned facts, social media platforms influence competitiveness of businesses on the market. Many companies have established and implemented effective strategies to become â€Å"first movers in social media and developed insights as how consumers think and behave about their products and services†(Rajagopal, 2013, p. 127). Many companies face certain challenges caused by social media power regarding the sustainability of market competition. Many companies used negative commentaries of consumers about their competitors’ products and services to become more successful on the competitive market. Competition is influence d by social position of businesses. In other words, social status among business organizations reflects their social position on the market, measured by business relationships among business organizations. Social media platforms may shape the way that the company’s competitors may use to become more successful on the competitive market.           In addition, negative word of mouth communication by means of social media platforms reduces sales rate. When consumers are not satisfied with some product or service, they have an opportunity to relieve their frustration, making efforts to convince others about the company’s failures (Beal Strauss, 2009). These consumers’ complaints about the quality of products and services may be crucial in the sales rate of businesses because consumers try to find other companies, more trustworthy and more competitive ones. Many companies are concerned about the effects of the negative word of mouth communication because it can go global, influencing the overall productivity of the company on the market. The information on Facebook, Twitter, YouTube, and other major social media sites requires the proper control and feedback (Fritz, 2012). Thus, some specific strategies and effective tactics are necessary to be focused on building business.           Nevertheless, some experts argue that the use of social media does not have a strong impact on the company’s reputation and competitive advantage. The success of any company on the competitive market depends on the level of customers’ trust. There are many ways to obtain good reputation and keep it without effort, e.g. powerful advertising campaigns on TV, radio, print media, reduced prices, employee benefits, etc. Social media tools, such as YouTube, Twitter, Facebook and some other well-known platforms will fail to completely destroy the company’s values (Fritz, 2012; N ewson et al., 2009).           But despite these contradictions, social media may have a harmful impact with negative customer opinion regarding the company’s products or services, providing businesses with new and different useful information. Although many companies have developed their reputation management plans, which integrate the application of both offline and online procedures, social media platforms, like YouTube, create a serious threat to the company’s reputation. It would be better for any company that is criticized in the social media to give a prompt and adequate response (Rajagopal, 2013). Social media can teach a customer service lesson; therefore any company should be ready to respond adequately (Rajagopal, 2013). Public relations should work with customer service department to ensure that the company is ready to give responses to consumers.Conclusion           Thus, it is necessa ry to conclude that the availability and use of social media on the Internet really provide businesses with new and different useful information. In many cases, this information is negative and has an adverse impact on the development of businesses. As a result, many companies have to develop and implement the proper strategies aimed at reducing the negative effects of the use of social media platforms by consumers. In many cases, consumers’ comments on blogs, YouTube video clips, and other negative comments about products or services are discussed by managers and the proper changes in strategic directions are made to address the issues of concern, e.g. poor customer services, low quality of products, etc.
Tuesday, March 3, 2020
How Quantum Levitation Works
How Quantum Levitation Works Some videos on the internet show something called quantum levitation. What is this? How does it work? Will we be able to have flying cars? Quantum levitation as it is called is a process where scientists use the properties of quantum physics to levitate an object (specifically, a superconductor) over a magnetic source (specifically a quantum levitation track designed for this purpose). The Science of Quantum Levitation The reason this works is something called the Meissner effect and magnetic flux pinning. The Meissner effect dictates that a superconductor in a magnetic field will always expel the magnetic field inside of it, and thus bend the magnetic field around it. The problem is a matter of equilibrium. If you just placed a superconductor on top of a magnet, then the superconductor would just float off the magnet, sort of like trying to balance two south magnetic poles of bar magnets against each other. The quantum levitation process becomes far more intriguing through the process of flux pinning, or quantum locking, as described by Tel Aviv University superconductor group in this way: Superconductivity and magnetic field [sic] do not like each other. When possible, the superconductor will expel all the magnetic field from inside. This is the Meissner effect. In our case, since the superconductor is extremely thin, the magnetic field DOES penetrates. However, it does that in discrete quantities (this is quantum physics after all! ) called flux tubes.Inside each magnetic flux tube superconductivity is locally destroyed. The superconductor will try to keep the magnetic tubes pinned in weak areas (e.g. grain boundaries). Any spatial movement of the superconductor will cause the flux tubes to move. In order to prevent that the superconductor remains trapped in midair.The terms quantum levitation and quantum locking were coined for this process by Tel Aviv University physicist Guy Deutscher, one of the lead researchers in this field. The Meissner Effect Lets think about what a superconductor really is: its a material in which electrons are able to flow very easily. Electrons flow through superconductors with no resistance, so that when magnetic fields get close to a superconducting material, the superconductor forms small currents on its surface, canceling out the incoming magnetic field. The result is that the magnetic field intensity inside of the surface of the superconductor is precisely zero. If you mapped the net magnetic field lines it would show that theyre bending around the object. But how does this make it levitate? When a superconductor is placed on a magnetic track, the effect is that the superconductor remains above the track, essentially being pushed away by the strong magnetic field right at the tracks surface. There is a limit to how far above the track it can be pushed, of course, since the power of the magnetic repulsion has to counteract the force of gravity. A disk of a type-I superconductor will demonstrate the Meissner effect in its most extreme version, which is called perfect diamagnetism, and will not contain any magnetic fields inside the material. Itll levitate, as it tries to avoid any contact with the magnetic field. The problem with this is that the levitation isnt stable. The levitating object wont normally stay in place. (This same process has been able to levitate superconductors within a concave, bowl-shaped lead magnet, in which the magnetism is pushing equally on all sides.) In order to be useful, the levitation needs to be a bit more stable. Thats where quantum locking comes into play. Flux Tubes One of the key elements of the quantum locking process is the existence of these flux tubes, called a vortex. If a superconductor is very thin, or if the superconductor is a type-II superconductor, it costs the superconductor less energy to allow some of the magnetic field to penetrate the superconductor. Thats why the flux vortices form, in regions where the magnetic field is able to, in effect, slip through the superconductor. In the case described by the Tel Aviv team above, they were able to grow a special thin ceramic film over the surface of a wafer. When cooled, this ceramic material is a type-II superconductor. Because its so thin, the diamagnetism exhibited isnt perfect ... allowing for the creation of these flux vortices passing through the material. Flux vortices can also form in type-II superconductors, even if the superconductor material isnt quite so thin. The type-II superconductor can be designed to enhance this effect, called enhanced flux pinning. Quantum Locking When the field penetrates into the superconductor in the form of a flux tube, it essentially turns off the superconductor in that narrow region. Picture each tube as a tiny non-superconductor region within the middle of the superconductor. If the superconductor moves, the flux vortices will move. Remember two things, though: the flux vortices are magnetic fieldsthe superconductor will create currents to counter magnetic fields (i.e. the Meissner effect) The very superconductor material itself will create a force to inhibit any sort of motion in relation to the magnetic field. If you tilt the superconductor, for example, you will lock or trap it into that position. Itll go around a whole track with the same tilt angle. This process of locking the superconductor in place by height and orientation reduces any undesirable wobble (and is also visually impressive, as shown by Tel Aviv University.) Youre able to re-orient the superconductor within the magnetic field because your hand can apply far more force and energy than what the field is exerting. Other Types of Quantum Levitation The process of quantum levitation described above is based on magnetic repulsion, but there are other methods of quantum levitation that have been proposed, including some based on the Casimir effect. Again, this involves some curious manipulation of the electromagnetic properties of the material, so it remains to be seen how practical it is. The Future of Quantum Levitation Unfortunately, the current intensity of this effect is such that we wont have flying cars for quite some time. Also, it only works over a strong magnetic field, meaning that wed need to build new magnetic track roads. However, there are already magnetic levitation trains in Asia which use this process, in addition to the more traditional electromagnetic levitation (maglev) trains. Another useful application is the creation of truly frictionless bearings. The bearing would be able to rotate, but it would be suspended without direct physical contact with the surrounding housing so that there wouldnt be any friction. There will certainly be some industrial applications for this, and well keep our eyes open for when they hit the news. Quantum Levitation in Popular Culture While the initial YouTube video got a lot of play on television, one of the earliest popular culture appearances of real quantum levitation was on the November 9 episode of Stephen Colberts The Colbert Report, a Comedy Central satirical political pundit show. Colbert brought scientist Dr. Matthew C. Sullivan from the Ithaca College physics department. Colbert explained to his audience the science behind quantum levitation in this way: As Im sure you know, quantum levitation refers to the phenomenon whereby the magnetic flux lines flowing through a type-II superconductor are pinned in place despite the electromagnetic forces acting upon them. I learned that from the inside of a Snapple cap.He then proceeded to levitate a mini cup of his Stephen Colberts Americone Dream ice cream flavor. He was able to do this because they had placed a superconductor disk within the bottom of the ice cream cup. (Sorry to give up the ghost, Colbert. Thanks to Dr. Sullivan for speaking with us about the science behind this article!)
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