...1- PURPOSE OF EXPERIMENT The object is to determine the hardness of a material (steel, aluminum etc.) for different scales. 2. THEORY The hardness of a material can be defined as “The resistance to permanent plastic deformation”. There are three general types of hardness measurements depending on the manner in which the test is conducted. These are (1) scratch hardness, (2) indentation hardness and (3) rebound or dynamic hardness. Only indentation hardness is of major engineering interest for metals. Scratch hardness is measured according to Mohs’ scale. This consists of ten standard minerals arranged in the order of their ability to be scratched. The softest mineral in this scale is talc (Scratch hardness 1), while diamond has a hardness of 10. A fingernail has a value about 2, annealed copper has a value of 3 and martensite a hardness 7. The hardest metals fall in the Mohs’ hardness range of 4 to 8. In dynamic hardness measurements, the indenter is usually dropped on to the metal surface, and the hardness is expressed as the energy of impact. In the indentation hardness measurements, the hardness of a metal is measured by forcing an indenter into its surface. The indenter material, which is usually a ball, pyramid or cone, is made of a material much harder than the material being tested. For example hardened steel, tungsten carbide, or diamond is commonly used. In this test, the indenter is forced into the surface of the material under a standard load at right angle...
Words: 929 - Pages: 4
...communicate and search for information. The adoption rate has been tremendous and jumps 3 fold (1% to > 97%) between 1993 and 2007. The Internet has taken the world by storm over the past few years and continues to grow today with more social tools being develop and use by everyone. All of us are now connected to the Internet in one way or another. With the release of social media, everyone is broadcasting their life and events through it. This has taken a very fast pickup rate by the current generation. It has become part of everyday life, it is no longer a nice to have but a must have. Even the older generation has been trying to learn this new technology. It is very common now that company advertisement and promotion of new products have official Facebook account for the public to read and follow the product development till launch. Twitter has been another real time app to inform and give a shout out to ones friends and even reach out to a wide audience. This is not limited to a particular area and one can reach out to anyone in the world who is connected through the app. In view of the trend in internet world and it impact, it is no longer a matter of choice for companies to use social media but they should embrace social media to aid them in sustaining competitive advantage with three reasons to bear in mind. They are low-cost platform, allow rapid engagement between peers, employees, customers and the broader public and they give opportunity to learn from...
Words: 2611 - Pages: 11
...The last decade witnessed an explosion of social networks such as Myspace and Facebook, which added a new social dimension to the web. While such networks have made people, communities and groups with shared interests stay more “connected,” Internet addiction and social network addiction in particular also started being recognized as psychological disorders all over the world. While several 90′s studies focused on Internet addiction, the next decade saw the growth of a new addiction related to all manner of social networking sites, especially the current king of the jungle: Facebook. In a recent study from the University of Athens, Greek psychiatrists argued that a woman who had gone as far as losing her job on account of her compulsion to check and update her Facebook, could be identified as a “social network addict.” Of course, there are different levels of social network addiction. Another recent study carried out at a Czech University analyzed Facebook-related academic procrastination. Though based on a sample too small to draw any general conclusions, one interesting finding of the research was that people tended to be unaware of just how much time they really spent on Facebook, and the effect this might have on their academic performance. On the other hand, it has been noted that there may be a correlation between low self-esteem and a sense of social inadequacy and social network addiction. It seems that many types of social interaction which would present great challenges...
Words: 1030 - Pages: 5
...addicted to facebook is an article written by Elizabeth Cohen. It is about a mother named Cynthia who is addicted to facebook. Cynthia spends more than 20 hours a week online, half of the time for work as she has an online business and half the time for her own pleasure. The text tells us that there are no statistics yet to prove ‘facebook addictions’ however more and more people are telling their doctors that they have these so called “facebook problems” as Paula Pile refers to them, in the text. She says that facebook itself is not a problem, and that actually it is a good way of sharing your life events with your friends but when you start to loose sleep over facebook or you spend more than an hour on there a day, that is some of the factors of addiction. The text continues to discuss other factors of facebook addictions. b) Text number one talks of how social networking is a way of grouping individuals who enjoy the same interest. This is one thing that the internet is good for, meeting new people who we can share information with and in that way connect over similar interest and ideas. Social networking also give us a chance to talk to people from all over the world. Its an opportunity to discuss new cultures or new languages. However, one must always be careful with the information one shares as there are cases of people who pretends to be someone online who they are not, in real life. We don’t exchange valuable information...
Words: 910 - Pages: 4
...environment, acquiring the knowledge and skills necessary to be productive. In addition, so much of our planet rapidly is becoming connected via the Internet so that social protocol has become an intrinsic part of technology- based curriculum. But increasing reports connecting psychologically addictive characteristics to internet use, along with speculation of its negative influence on social functioning, have brought to question the enduring effects of its reform. Educational systems around the world are under increasing pressure to use the new Information and Communication Technologies (ICTs) to teach students the knowledge and skills they need in the 21st – century (UNESCO, 2002). Thus the key concern driving the policy and community interest in the pedagogical integration of ICT is the premise that ICT is important for beginning changes to classroom teaching and learning so as to foster the development of students’ 21st – century skills. Specifically, these skills include the capability to become lifelong learners with a context of collaborative inquiry and the ability to work and learn from experts and peers in a connected global community (Law, Pelgrum & Plomp, 2008). Social computer use is widespread and growing. Current estimates indicate that 149 million people are social worldwide, and that number is increasing at the rate of 12% a month (Suler, 2008). Integrating the Internet into classroom activities allows teachers...
Words: 2100 - Pages: 9
...IS IT ETHICAL FOR EARNING MONEY FROM SELLING CUSTOMER’S INFORMATION? Social networks on the Internet are becoming powerful in our life due to a huge number of users. One of the reason for that success is the fact that those networks sell information of their customers for other companies such as: advertising firms, sale enterprises, etc. However, this issue has raised arguments about users’ privacy. Some people claim that it is not ethical for making profit from personal information while others state that it is not privacy detection when social networks give individual data, which users provide on public websites (e.g.: Facebook, Twitter, etc.), to business companies. The author of this essay believe that selling personal information is unethical business because of the following reasons that utilize Facebook as an circumstance to illustrate the author’s view. To begin with, it is possible that social networks such as Facebook has earned a great amount of money from its user’s data. Founded in 2004, Facebook is one of the biggest social networks providing a connection among people, and where a person can aware what is happening or share his/her own feelings. This network has achieved outstanding success by attracting a huge number of customers. In addition, it earned 7,872,000 in 2013 and there were 864 million daily active users on average for September 2014. One part of this success is proved to come from selling Facebook users’ information for the companies that want to...
Words: 1059 - Pages: 5
...Should Social Networking Sites Be Banned? Social Network sites are known as web-based services that allow individuals to construct a public or semi-public profile in a bounded system. One user can contact a list of other users with whom they share a connection and also view their list of connections and those made by others within the system. The nature of these connections may differ from site to site. A social network service essentially consists of a profile, the person’s social links and a variety of additional services. Most social network sites provide a means for users to interact over the internet, such as instant messaging and email. There are many dangers and problems in using these sites; however, there are also many benefits, to both the individual and society. I will explore the issues related to using social network sites; paying particular attention to the quality of communication it allows and what are the positive and negative effects of social network services? Social networking sites allow children who are scared or nervous to communicate with others to gain more confidence interacting with one another because these days many children avoid communication because they do not feel confident interacting. The social networking sites also allow people to become more familiar of the evolving world around and all the things that are going on around them because some children do not know about the latest things and what’s going on around the world. The social...
Words: 1124 - Pages: 5
...BUS 010 2012 Project Proposal Group: s57g1 Title: How social network affects society nowadays Purpose: 1. We would like to find out the changes of social network. 2. How teenagers' behavior, self-esteem, lifestyle etc. influenced by social network. 3. Positive and negative effects of information flow of social network Rationale: Nowadays, most of the teenagers whose age between thirteen and nineteen, use or communicate with their friends through social network every day, due to some advantages of convenience, fast information flow and trend, etc…. In 1997, the first recognizable social network site was launched, SixDegrees.com. It allowed users to create profiles, list their Friends ,which began in 1998. It is beneficial to teenagers to keep contact with and make friends easily. Whether ICQ and AIM was built, that kind of the social network has became more popular. During 21st century, lots of social network excepted ICQ and AIM was built like Facebook , Weibo , Skype , MSN , QQ , twitter, which become the most popular social network and a lot of people are addicted to that kind of the social network especially teenagers. What does social network attract lots of people to use it? It is because of many useful function which help people to develop their social circle and keep interact with other, it become popular in the society. Social network sites (SNSs) such as such as Friendster, CyWorld, and MySpace...
Words: 1901 - Pages: 8
...TermPaperWarehouse.com - Free Term Papers, Essays and Research Documents The Research Paper Factory JoinSearchBrowseSaved Papers Home page » Social Issues Why Social Networking Sites Are Addictive In: Social Issues Why Social Networking Sites Are Addictive “Why Social Networking sites are so addictive” Next to the numerous games that often hooks are attention, another thing that most parents problems today towards their children is the social networking sites that is said to be addictive due to its unlimited offers. The connection that can be made between two people distant to each other is such a thing that you simply cannot resist. Not only is discovering new content through all the retweets almost invaluable, but simply striking a conversation about common interests or thanking people for retweets, is a joy! Once you've gotten involved in networking sites, things can escalate quickly. One reason these sites are so addictive is that there's a nonstop stream of messages, photos, updates and information coming from those in your network. If you have 10 friends, it shouldn't be a problem keeping up with them. If your network is 100 friends or more, you might end up online for hours every day, trying to check all of the updates. If you're trading messages back and forth with other members, you might find yourself even more caught up in the exchange, just as you would in a normal conversation. We’re able to communicate with so many people from all across the globe...
Words: 523 - Pages: 3
...Argument essay about social media Nowadays, a lot of people are using social media such as Facebook, Twitter, Tumbler and so on. Since the Internet has propagated rapidly, social media have progressed a lot. The generalization of the internet makes us to live conveniently and fast. People are almost using smart phones, i-phones or comfortable devices which can access to internet. These equipments make us to do social network easily. It helps contact friends, family, and other people even though they live far away. It could be, however, abused, if you don’t use properly. Especially, it is important that we understand and regulate the use of social media by young children. First of all, social media, especially facebook, are very addicted. People would say drug or alcohol is more addicted than social media or social media addiction is not big problems, but it is not true. There is a report of the social media addiction by University of Chicago’s Booth School of Business. A team from the University of Chicago’s Booth School of Business recently conducted an experiment involving 205 people in Wurtzburg, Germany to analyze the addictive properties of social media and other vices. Participants in the week-long study were polled via BlackBerry smart phones seven times per day and asked to report when they experienced a desire within the past 30 minutes, and whether or not the succumbed to that desire. They were also asked to gauge each desire on a scale from...
Words: 853 - Pages: 4
...2. The three texts clearly describe both positive and negative sites of social networking. In text 1 we learn how social networking knows no boundaries, how people from all over the world easily can communicate across countries. People are able to learn from one and other discuss all kinds of different subjects. Everything from cosmetic surgery to marketing and even friendships occurs online. All though there is also several risks by sharing personal information online and just by having an online profile that shares some of your personal information, people also exposes themselves to identity fraud, online predators, data theft and viruses. More disturbing facts are presented en text 2. Here we learn about a mother, who want’s to be anonymous and, who is so addicted to Facebook that she can’t manage to help her 12-year old daughter with her homework. Even though she admits to have a problem and realize how pathetic it is, she can’t do anything about it. She has several excuses for spending more then 20 hours a week on Facebook; she runs an online business, and as a single parent she also like to flirt with guys on Facebook. A marriage and family therapist named Paula Pile from North Carolina tells that she has had three clients last Friday with the same problem as the mother we just heard about. There is no statistics and there is neither any medical diagnosis on the subject, Pile has made a “Facebook Compulsion Inventory” for those who want’s to find out if they are addicted...
Words: 825 - Pages: 4
...The Social Web: It is what you make it Instructor Debra Austin INF103 Computer Literacy Heather Miller August 6, 2012 The social web is a somewhat new and exciting place where people from all over the world can connect without leaving the comfort of their own homes. Like any type of newfangled technology there are upsides and downsides that need to be considered before deciding if this is a good or bad thing. Like many other activities that utilize time and provide an escape from the pressures of the day, the social web has many advantages and downfalls; however, it is up to each of us to decide whether to participate or not. According to oxforddictionaries.com, the Social Web, or the Social Network, is a “…dedicated website or other application which enables users to communicate with each other by posting information, comments, messages, images, etc.”. The current top five social networking sites are Facebook, Twitter, LinkedIn, Pinterest, and MySpace. All of these are places where you can connect with others to share opinions, play games, share interests, and overall, it is a place to be social. This is a place where someone who has more of an introverted personality or low self-esteem can be popular or outgoing; a place where a person can connect with people from different countries that they may never visit. Some people compare how many “friends”, or contacts, they have made on these sites; many may be people that you have not actually met face to...
Words: 2292 - Pages: 10
...Question The World Wide Web has flattened the world, and in the 21st century, digital revolution is having a significant influence on humanity. Since the rapid proliferation of the Internet, social network has advanced significantly. On average, Internet user worldwide spends 23.1 hours per month online, of which social networking accounts for at least 24 percent, which has tripled in the last few years. South Korea, being one of the most connected countries in the world with an Internet penetration of 80.9%, also sees more people spending time online than 5 years ago. Youths nowadays fall asleep with their smartphones in hand instead of a soft toy, and wakes up scrolling through social networking sites, shaking off the drowsiness. The use of social networking and its effects on academic performance is an increasing concern as students get permanently distracted and have shorter attention spans. While social network has no doubt contributed many positive aspects such as allowing us to stay connected, it is also affecting us negatively. Even though no disorder has yet been linked to social networking disorder, there are still a number of behaviors such as constantly checking Facebook status updates that can be associated with excessive use of social network. What makes social network so enthralling? Is it the effortless connection that one can obtain with family and friends? Although one may argue that spending several hours a day reading random updates is merely news...
Words: 719 - Pages: 3
...Cristal Zeas Professor Rogoff FYE 1320 April 1, 2014 Sharing is Caring In present day society, individuals dedicate their time to social media on the internet and electronics, towards updating statuses, rebloging pictures, favoriting videos, reading up on current events, and staying connected in general. It’s only been 25 years since Tim Burners-Lee invented the world wide web and it’s no secret that it is one of the most progressive and influential invention of our time. Dave Eggers, in his current book The Circle, foretells his version of what can happen with the growth of technology and social media and pushes our current standard of being virtually connected from the main social networks Facebook, Twitter, Google, and Tumblr. In this book, focusing on the ninth threshold of social networks and the technological self, we notice the influence of technology on societal construction and deconstruction of privacy and the nature of democracy impacting humanity’s digital life. Set in an undefined future time, Eggers’s novel tells the story of Mae Holland, a young idealist who comes to work at the Circle, an immensely powerful technology company that has conquered all its competitors by creating a single log-in for people to search, shop and socialize online. The company demands transparency in all things; two if its many slogans are “secrets are lies and privacy is theft.” Anonymity is banished; everyone’s past is revealed; everyone’s present may be broadcast live in video...
Words: 2335 - Pages: 10
...Source A Author : Rebecca Sweeny Title of article : Social Networking Sites: More Harm Than Good? Published date : 27 April 2012 Retrieved date : 23 May 2013 Website URL : http://netwokconference.netstudies.org/2011/04/social-networking-sites- more-harm-than-good A social networking site can be defined as an online service that is based around the building and reflecting of social relations among individuals with common interests or social ties. Social networking sites such as Facebook, Twitter, MySpace and Linkedin share some key features, which is they enable users to create a profile within the website to represent themselves and allows users to interact through email, instant messaging and other integrated communication channels within the site. The popularity and growth of social networking sites over the past five years has been colossal, as many people from all over the world join up to this social phenomenon for various reasons. In fact, social networking sites do cause more harm than good. Identity theft is a huge problem in today’s society and has come about as a result of the rapid expansion and availability of internet technology and the increase in personal data found on social networking sites. Such sites encourage you to edit your profile by adding your interests, full name, address, contact details, relationship status and other personal details. This information disclosure causes a huge problem as the information made it easy for the...
Words: 1425 - Pages: 6
