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Bitcoin 이미지
Bitcoin
  • 작성자HANBAT HERALD
  • 조회수4512
  • BitcoinBy Kim Myeong-gyu Reporter, Junior of Chemical and Biological EngineeringDue to the future value of virtual assets and the expectations of return on investment, more and more investors are investing in virtual currencies, rather than stocks. News related to virtual assets is regularly pouring out, whether it is good or bad. Recently,there was even a day when the daily transaction amount of exchange exceeded the total transaction amount of the Korean stock market. It seems that Bitcoin is now at the center of the virtual asset market.ŸWhat is Bitcoin?Bitcoin, which is based on blockchain technology, is a virtual currency, and the first cryptocurrency that, in a digital environment, does not have a physical form of exchange with a real currency, such as bills or coins.ŸWhy do we Pay Attention to Bitcoin?We pay attention because of blockchain technology. Blockchain is a distributed data storage technology that stores data, connects it in a chain form, and replicates it on numerous computers. For example, when 10 people are participating in a network, transaction details (data) that occur when users A and B make a transaction, are transmitted and stored to all the usersparticipating in the network.So, how does bitcoin differ from the existing monetary methods? Previously, banks or governments played a safe intermediate role between transactions. However, with blockchain technology, the currencies are separated and stored by individual people, rather than by banks. Since individuals online play an intermediate role, there is no longer any need for central administrators, such as banks.ŸCharacteristics and Benefits of BitcoinŸPortabilityBitcoin is a digital currency, so you can conveniently carry it on a drive (a portable storage device on a computer) and store it online.ŸAccessibilityIt provides a service that allows you to transfer money and make payments, wherever the internet is available.ŸTransparency and SecurityOn the blockchain, anyone can check all transaction details and related information in real time. Therefore, neither individuals nor institutions can control or manipulate data.ŸNon-counterfeitingCounterfeiting is impossible, due to the various defense mechanisms inherent in blockchain technology and Bitcoin.ŸThree Features of Bitcoin that are Different from Traditional CurrencyThe first of Bitcoins features is decentralization. As mentioned, existing banks that use central servers may have a risk of being hacked, and may not be controlled. However, cryptocurrency is very safe because hacking would require attacking every single user who participated in the network, and that is practically impossible.The second feature is alternative possibilities. There are traditional currencies, such as the dollar and the euro, that can be used in many countries, but most currencies can only be used in one country. However, Bitcoin is an online network currency that can be used anywhere in the world.The third is durability. Bitcoin does not exist in real form and cannot be destroyed in any way. Bitcoin, unlike bills and coins, exists permanently.Bitcoin, also called digital gold, is valuable enough to be recognized as the national money currency in El Salvador. In addition, Bitcoin is recognized as an asset through the current law for special prohibition, and Virtual Asset Tax in Korea. In the future, Bitcoin, which contains various values such as blockchain technology and decentralization, will create a huge flow in our economic lives.
  • 등록일2023-02-20 16:52:32
International Student ID Card 이미지
International Student ID Card
  • 작성자HANBAT HERALD
  • 조회수4461
  • International Student ID CardBy Lee Hae-rin Cub Reporter, Sophomore of English Language and LiteratureDo you know about International Student ID Cards? In principle, a student ID card does not have credibility abroad, but an international student ID card can be used as an identification card in all areas, certified by overseas certification institutions. In addition, an international student ID card brings various discounts and benefits to reduce expenses for students who visit foreign countries for the purpose of traveling or studying abroad.Institutions that provide international student ID cards include ISIC (International Student Identity Card), and ISEC (International Student Exchange identity Card). In general, ISICs are widely used and can be recognized in more places. Therefore, students are relying more on ISICs than ISECs. Since their creation in 1953, ISIC cards have been used by more than 1 billion students around the world. In Korea, international student ID cards are issued annually to more than 180,000 students, and more than 150,000 studentbenefits are available for card users, worldwide.How to Issue an International Student ID CardThe ISIC is issued to full-time students, aged 12 or older. ISIC is issued as a general identity card, but it also has functions that combine check cards and credit cards. Only students who are 14 or older can be issued with a student ID card that includes the check card functions. To get an international student ID card, first you need to fill in an online application form. If you are a student from an ISIC issue partnership school, then you can visit the schools website, click on the international student ID card menu, and fill out an online application form. If you are not studying at a partnership university, you can fill in the online application form at isic.co.kr. (You can enter the online application form by scanning the QR below). In order to receive a student ID card, a certificate of enrollment, or leave of absence has to be issued by the university within the last month. After filling out the application form, you need to pay the international student ID card issuance fee. The ISIC issuance fee is 17,000 won for applications with a one-year validity period, and 34,000 won for applications with a two-year validity period. Finally, log into MY ID, select the card type and issuance method in the Card Issuance section, and apply.
  • 등록일2023-02-20 16:38:30
No More Safe Zones 이미지
No More Safe Zones
  • 작성자HANBAT HERALD
  • 조회수4555
  • No More Safe ZonesBy Kim Min-joong Cub Reporter, Junior of Mechanical EngineeringBefore the fear of the tragic global pandemic COVID-19 went away, Pakistan was declared to be in a state of emergency after three months of heavy rains paralyzed the national administration. 1/3 of the country was flooded, and it is estimated that 35 million people have been displaced by the floods, and more than 2,000 people have died.South Korea, which has been less affected by floods and typhoons for a long time, due to its topographical features of a high eastern coast and a low western coast, implemented four river restoration projects in the 2000s, to improve drainage. However, South Korea is no longer rated as a safe zone for flood damage. This is because, starting in the summer of 2020, unusually heavy rain fell on the Korean peninsula. The flooding started in Busan, and the Haeundae area, where many skyscrapers had been constructed,which were more than 50 stories high. Recently, the 11th typhoon, Hinnamnor, that hit the Korean peninsula this summer, as well as flooding caused by localized torrential rains, caused a lot of damage to most cities, including Seoul. The Pakistan floods (2022) are no longer just unfortunate events that happen in other countries, and South Korea is also no longer safe.The fundamental reason for more frequent occurrences of larger typhoons and heavier rains than before, is the excessive amount of energy near the equator, due to the effects of recent accelerated global warming. This energy is then transported to higher latitudes in the form of typhoons and heavy rains, to keep the global temperature in balance. It is the most naturally effective way of reducing the intensity of the energy. However, since it is virtually impossible for humans to solve the fundamental reason for more frequent occurrences of natural disasters, governments and individuals must take measures against these natural disasters.At the government level, last year, the Masan areas barrier wall was used to effectively prevent typhoons, and they are currently considering a plan to apply barriers to most of the coastal areas. In addition, as a project to minimize flood damage, maintenance of the pre-existing reservoirs and the construction of additional dams are planned, and a rainwater tunnel project is also being promoted.On the personal level, a flood preparation kit should be pre-stocked with clothing, essentials, and valuables, in case you have to leave the house unexpectedly. While you can minimize flood damage bystacking heavy objects on doors and windows, it is more effective to lay down a waterproof cloth and pile up heavy objects. Due to the lack of such preparations, many shops were flooded, due to the typhoon Hinnamnor. Finally, you will need to leave the flooded area, but your escape route and time may change if someone with a disability requires a wheelchair or any other necessary equipment. Therefore, provisions should be made for people with disabilities, as well as children,other people in need, and also pets.In addition, drivers should skip any flooded areas on their driving routes. As the phrase in the campaign says:If its a flooded, forget it. In the case of the Korean floods, there was a regrettable loss of life when people forced their way into the underground parking lot of an apartment building to protect their cars. The most important thing is not to go to flooded areas. But when a situation like this happens, think about which is more precious: Your life, or yourcar.with post-flood damage is also very important. This is because there is a high possibility that waterborne infectious diseases will spread, nationwide, due to shortages of drinking water. For this reason, if flooding is expected, you can prepare drinking water in advance, or boil it before drinking. Since the ground becomes weak and landslides frequently occur, people should refrain from outdoor activities around mountain areas. Residents near mountains should evacuate immediately, and report to their local governments if they have seen any landslides, or any symptoms of potential landslides.In South Korea, where typhoons and floods cannot be ignored, it is essential to know how to deal with them. However, such education has not been sufficiently conducted in South Korea, perhaps because of the previous low amounts of damage. Taking lessons from these recent flood damage cases, we hope that typhoon preparation measures will be implemented in the next disaster, so as not to commit the same mistakes as before, in preparation for upcoming floods. Good Luck!!
  • 등록일2023-02-20 16:37:16
Road to Qatar 이미지
Road to Qatar
  • 작성자HANBAT HERALD
  • 조회수1531
  • Road to QatarBy Choi Ha-ram Cub Reporter, Sophomore of Public PolicyIn the winter of 2022, a championship will be held which will make the worlds football fans flutter. It is the FIFA World Cup, a quadrennial global festival. This World Cup will be held in Qatar in the Middle East area, and it will last for a month, from the 21st November until the 18th December. There is a six-hour time difference between Qatar and the Republic of Korea, so from the Korean perspective, most games will start late at night or early in the morning. This will not be a problem with the Koreans who often watch overseas football matches, but the people who do not will be tired. However, why not try to watch the World Cup game at the late time? That experience is going to give you a new enjoyment. Now, I will give you some of the basic knowledge that you will have to know to enjoy the 2022 Qatar World Cup.What is the World Cup?In the 2022 Qatar World Cup, only 32 countries who are selected through regional qualifiers from six continents (Asia, Africa, Europe, North and Central America, South America, Oceania) will advance to the World Cup. The country that advances to the World Cup final tournament, is going to play the group stage which will be combined into four countries in a group through a draw. The group stage is progressed by league method, playing a rotating game once with all teams in a group. Thus, every country has a total of three games in the group stage. If they win the game, they will gain 3 winning points, and if they draw, they will gain 1 point. The losing team will gain zero points. Like this, through the group stage, all winning points are added to make a ranking. The first and second country of each group will advance to a round of 16.-> The score of the F group at 2018 FIFA World Cup Russia (highest ranked: two teams, Sweden and Mexico, were advanced to a round of 16)The country that advances to a round of 16 will compete in the tournament. The tournament progresses by playing a series of matches where the winning team goes on to the next round. The final two teams compete to decide the final champion. This final tournament must determine a winner and loser, so there cannot be a draw. If the score is drawn, even after finishing the first half and second half, then victory and defeat is determined through an additional overtime. This extra game time has two 15 minute halves with a break in between. If the outcome is still not determined after the overtime, then the winner is decided through a penalty shoot-out. The penalty shoot-out consists of 5 players from each team who take a penalty, and the team that scores the most goals wins. The losing countries in the round of 16 will be eliminated immediately, and the winning countries will advance to the next stage. This same process is repeated, and the team that wins in the last stage will be the final winner of the World Cup. Hopefully, this will help you to enjoy the World Cup, watching each match and guessing which country will be the champion.Official Match Ball of the 2022 World CupThe official match ball that will be used in the 2022 Qatar World Cup is Al Rihla, which means travel. The Al Rihla ball flies faster and more accurately than conventional balls. Speedshell technology, which is comprised of 20 square pieces of material, treated with polyurethane, increases the accuracy, speed, and flight stability of the ball. Additionally, focusing on sustainability, Al Rihla is the first eco-friendly official match ball of the World Cup, which is made of water-based ink and water-based adhesives. The production company, Adidas, said that the ball was inspired by the cultures, traditional architectures, and the national flag of Qatar. They explained that they used purple and dark-blue to express Qatar, and the speed of a football game getting faster. Lets look forward to what kind of history will be written in this World Cup with the new official match ball.source by Adidas official online site.Football Rules, which are More Fun When You Get To Know Them1. Penalty Kick (PK)A penalty kick is an opportunity given to the attacking team, due to a defensive teams foul. If the defense teams player fouls in the penalty area, the attacking teams player (non-foul team) faces the goalkeeper one-to-one and tries to kick the ball into the goal. The probability of strikers to get a goal increases, because there are no defenders who defend the goal area. The position that the penalty is taken from is 12 yards away from the goalpost. At that time, the defense teams goalkeeper has to stand on the goal line until the attacking teams striker takes the kick. In addition, other players except the kicker and the goalkeeper, must be at least 10 yards away, behind the penalty mark.2. OffsideOffside might be the hardest concept to understand for a beginner. However, you do not need to be afraid. Offside will be easy to understand, when you realize the strikers location. The conditions of determining offside are as follows. First, the attacking team player is located ahead of the ball in the opposing teams position. Second, the defense team cannot have more than two players between the opposing team and the goal line. Third, the attacking team players get a pass from their own teams player from behind. When these three conditions are qualified, an offside foul is declared. However, receiving a ball directly from the offside location with a goal kick, corner kick, or throw-in does not apply an offside foul. If you still do not know, scan the QR code below. This video will help you.The Players of South Koreas National Team that You Should Pay Attention to in the 2022 Qatar World Cup1. Heung-Min SonI think there are very few people who do not know this player, especially in Korea. Son has been a Tottenham Hotspurs striker in the English Premier League for 7 years. When he plays the game in the national team, he mostly performs actively as a winger. Sometimes, he plays as a center forward, but he mostly plays a role in creating opportunities for the center striker, through breakthroughs in the left wing. When Son gets a pass, he usually passes it on to center forward, but sometimes he directly brings the ball to the goalpost and scores a goal. That is why we have an expectation for Son where he can create a goal when he holds the ball. At the time of the 2018 Russia World Cup, there was a saying that it is nice to give all the balls to Son. Lets watch the match, and see what performance he will give in this World Cup. Probably, he will correspond to our expectations.2. Min-Jae KimHe is the necessary defender of South Koreas national team. He currently plays for Fenerbahce SK in Super Lig which is in Turkey's football league. His position is center-back. As a sweeper of the team, he defends the ball from the opposing team, and even creates a chance for his own team through a long-cross. In the national team, he not only accomplishes all the roles as a defender, but also sometimes participates in an attack, and looks for a heading goal opportunity from a corner kick with his tall height. In the final Asian qualifying round of the World Cup, the opposing team had difficulty in conducting an attack, because Min-Jae Kim blocked the ace striker of the opposing team. When you watch a World Cup match, it would be nice to pay attention to the performance of Min-Jae Kim who is called a monster defender. Perhaps, you will be able to feel reassured due to this player.How to Enjoy the World Cup1. With Fried Chicken and BeerIf you watch the match with the delicious food, the pleasure will be doubled. However, if the foods consist of fried chicken and beer, that will be perfect! In South Korea, people usually eat fried chicken and drink beer, when they watch the match in the football or baseball stadiums. Also, on the day of an important match, if you order fried chicken at a restaurant, it will be delivered later than usual. Koreans eat fried chicken as much when they watch a game. If the team loses on the day that you have fried chicken and beer, you can console yourself with fried chicken and beer, and if the team wins, you can rejoice even more. If you still do not have any experience with eating fried chicken and drinking beer while you watch a football match, you can try it during the World Cup.2. Singing a Cheering SongFor victory, Oh, victory for Korea, If you are a Korean, you might have heard these songs at least once in your life. When you sing the cheering songs, the players who listen to the cheering will gain strength. Not only will the players benefit, but also the audience who cheer will get more excited. Some people visit the stadium because they like the mood of the cheering section. If you watch the match directly in the stadium, you are sure to sing a cheering song. Probably, you can feel the same thing when you are in the stadium. If you can not watch the game in the stadium because of the COVID-19 and other reasons, sing a cheering song at home. There will be a new enjoyment waiting for you.Paulo Bento, manager of the South Korean national football team, has made many changes to the team. The result is that he emphasizes the build-up of football from the early stages of preparing for the World Cup. Now the Korean teams pass play is much more developed than before. As a result, Korea has made history because the Republic of Koreas team has advanced to the World Cup finals for the 10th time in a row. Lets cheer together for the Korean national team to do well in this World Cup. Also, lets expect to see the national team players show us what they have prepared. I am sure they will do just fine. Even if the result is not good, do not be disappointed. The reason they have advanced to the World Cup finals is great in itself. Lets cheer with a mature sports fan attitude, hoping the players will come back safely and with positive results.
  • 등록일2022-07-04 11:25:31
Flexible Phones? 이미지
Flexible Phones?
  • 작성자HANBAT HERALD
  • 조회수1500
  • Flexible Phones?By Yoo JayReporter, Senior of Material Science and EngineeringNow, we are living in an age of innovation. In 2007, a man wearing jeans and a black turtleneck took a small device out of his pocket. Then he completely changed the concept of cell phones. We can text a message, make a phone call, send an email, and use IT technologies, just by touching the phone screen. Thanks to this convenience, smartphones have become a part of our daily life. According to the Gallup Korea poll, conducted in 2021, the percentage of Korean adult smartphone users is currently 95 percent. In addition, according to data from the Korea National Statistical Office in 2021, adults use smartphones on average for four hours a day. Now, we feel that smartphones are like an essential part of our body. So, why dont we know what will happen on the mobile phone, which is just like a part of our body?Since people do most activities using a cell phone, there is one essential thing that mobile phones must have. It is portability. The latest smartphones are portable, but engineers are studying these items to increase their portability. How comfortable would it be to fold your cell phone like paper and put it in your pocket? In fact, many engineers are researching a variety of FormFactors (FormFactor : the physical shape of things and their appearance) that can be folded, and rolled. The display that can transform its form factor is called a flexible display, and many experts say that this technology is going to bring the next innovation to future cell phones. Surprisingly, some products have already been developed and are on the market. Lets figure out about cell phones according to the flexible stages.Stage 1 Flexible Display:Durable DisplayDurable Display phones have a curved screen as a whole. Since flexibility is required to bend the display, the substrate should be made from an elastic plastic, instead of the existing unbending glass. This technology was applied to G Flex that was launched from LG Electronics. This product fits our usage more comfortably. That means that the speakers and microphones can be positioned as close as possible to the ears and mouth. It can help users to hear better, and also increases the clarity of their voice for thelistener.Stage 2 Flexible Display: FoldableRollable DisplayRollable display is a flexible display that allows cell phones to be rolled up like toilet paper. In contrast, a foldable display is a flexible display that can be folded. A radius of curvature of the substrate around 10mm is required for a stage 1 flexible display. For stage 2, it needs a considerable decrease in the radius of the curvature of the substrate. So, it is essential to the macromoleculization of the substrate. This technology was applied to the Galaxy Z Flipthat was launched from Samsung Electronics in 2020. We can fold this product and put it in our pocket. You can enjoy a large 6.7inch / 17cm screen by spreading the display. Also, it can be spread out at various angles, so we can freely use our hands to do other things during the video call.Stage 3 Flexible Display: Stretchable displayThe ultimate goal of the flexible display is a stretchable display. It can be bent, folded, or stretched in the desired directions. After removing the stretching force, it returns to its original materials shape. For this technology, it is essential that the substrate, electrodes, and shields have a high restoration force. Once this technology is developed, we will be able to put our cell phones in our pockets like paper, and go to school. Then, take them out of our pockets for team projects, spread them out on large screens, and use them together.It is not the amazing thing that cell phones are folded anymore. Just 10 years ago, the foldable phone was a fantasy product in SF movies. However, how is it now? You can often see advertisements for Z flip, a flexible product, while passing through the street. The Stretchable displays, which are the last stage of flexible displays, have not yet been developed, but many research results continue to come out. Soon, stretchable displays that stretch like rubber bands will no longer be a surprise.
  • 등록일2022-07-04 11:22:51
A gift? Avoid This!
  • 작성자HANBAT HERALD
  • 조회수2031
  • A gift? Avoid This!By Lee Jun-hyeong Cub Reporter, Senior of Chemical and Biological EngineeringI want to buy you shoes, but Im always worried that you will leave. -SG Wannabe-Sunflower - As you can see in the lyrics of the song, you may have heard at least once, that if you present shoes to your lover, they will run away. In Korea, giving shoes as a gift to your lover is a kind of taboo. There are cases where people think that gifts may lead to big mistakes or relationships may go wrong as a result. In that case, what kind of gifts are taboo in other countries?USALilies: They are used at funerals, and are not given as gifts because they represent death. This is the same in the UK and Canada.Do you want a tip?They like practical gifts, and it is polite to immediately check the gifts when you receive them. ChinaTurtles: In Chinese, the pronunciation of the word for turtle is similar to that of ghost, so its better not to give presents that are related to turtles.Bouquet: Flowers mean a short life, and they are usually taken to funerals.Handkerchief: This is related to sadness, breakup and death, so avoid it as a gift.Do you want a tip?I recommend traditional alcohol because they love drinking alcohol.Congratulatory money or gifts must be paid in even numbers, and condolatory money must be paid in odd numbers.They like red, but they do not like white, black or blue colors because that means unhappiness. JapanKnife: It represents suicide and relationship disconnections. Handkerchiefs also mean relationship disconnections.White color means death. Thus, do not give whitethings, or use white wrapping paper.Do you want a tip?They prefer kimchi, seaweed, and ceramics.Do not use shiny packaging and ribbons.FranceRed rose: This means proposing. Therefore they only exchange it with their lovers.Perfume and wine: French people have a clear personal preference, so we do not recommend perfume gifts. Gifting wine is not recommended because it is similar to giving soju in Korea.Carnations: They are used for funerals, so do not give them as a gift.Do you want a tip?They drink a lot of tea, so werecommend tea gifts.Also, they eat jam on bread every morning, so I recommend jam gifts.GermanyWhite, black, and brown wrappers and ribbons are considered ominous colors, so it is better to avoid them.The number, 13: This number is considered ominous in Germany.Do you want a tip?In Germany, it is polite to take off the wrapper of the bouquet when giving flowers, and unlike when giving them to Chinese people, it is customary for Germans to give them in odd numbers. HungaryRed rose: There could be a misunderstanding because it means love feelings.Wine: Wine gifts are not recommended, because they have strong pride in the wine they produce.Do you want a tip?Unlike Germany, they must wrap a flower gift.PolandIt is good to give flowers as a gift because they like them, but you must not give them in even numbers.Do you want a tip?Practical and easy gifts, such as lighters and writing utensils, are recommended.ArgentinaWine: It is rich in wine and also a major producer of leather, so it is recommended to avoid wine and leather gifts.Do you want a tip?Tariffs on imported alcohol are quite high, so Scotch whiskey or French champagne are recommended. BrazilKnife: It means the end of a relationship, like Japan and Mexico.Black and purple gifts: They think that black and purple are ominous colors.Do you want a tip?We recommend giving small electronic devices.We have studied many items that are considered to be rude if they are given as gifts in different countries. There are some parts that you might understand, and some parts that you will think are very unusual. However, they are all related to each different countrys culture and history, so we need to have an attitude to respect and follow those ideas. So, if you have a chance to give a present to your foreign friends, you can consider the information in this article, and make sure you can give them a present that they will appreciate, and not one that will be considered offensive in their culture.
  • 등록일2022-01-14 13:51:41
Science Meets Sports 이미지
Science Meets Sports
  • 작성자HANBAT HERALD
  • 조회수2056
  • Science Meets SportsBy Yoon Ji-yeon Editor-in-Chief, Junior of Electrical EngineeringThe bad call is also a part of the game. Those who like sports may have heard this at least once. When the team or athlete that you are supporting gets the unfair results made by a referees bad call, the fans try to control their mind by reminding them of those words. As a result, it has become a part of sports culture.However, the players who have tried hard can not be damaged by misjudgments forever. People have tried to solve this problem by introducing science technology into sports. Then, specifically, what kind of technologies have been brought in different types of sports? It is fun to just watch, but if you have more knowledge of the technology, it will be much more fun! Lets find out in detail through this article.1. SoccerVideo Assistant Referee (VAR)Soccer, the most popular sport in the world, is one of the most representative cases in which scientific technologies are used. The VAR technology officially debuted in 2016 FIFA Club World Cup, and it has been widely used in Europes major football leagues, UEFA Champions League, and K-League.In important situations like a goal, penalty kick, red card, etc., we often can see the referees draw a square with two hands, and put their hands on the ears. This is the scene where the referees demand a VAR decision and exchange their opinions with the judges in the VAR room. The VAR judges who are in the VAR room are checking the game through the 30 cameras which are installed throughout the stadium. They communicate with the referees in the stadium in real time and deliver the reading results. In this process, the average reading time is around 12 seconds, which is much shorter than the time spent protesting against misjudgment. This meaningful change helps run the game smoothly.The most representative example of the game in which VAR changed the outcome is the 18-19 season Champions League quarter-final between Tottenham and Manchester City. In this game, the VAR decision was based on whether Fernando Llorentes goal was a handball foul or not. In conclusion, VAR showed the goal was not a handball foul, and Tottenham scored the goal. In the extra time ofthe second half, Manchester Citys Raheem Sterling scored a goal, and it made the game lean towards Manchester Citys victory. However, the VAR decision was made on whether the situation was an offside situation, and the result was offside. Eventually the goal was canceled, and as a result of the first and second round, Tottenham could advance to the Champions League semi-finals. Two VAR decisions determined their result.2. TennisHawk-eyeThe tennis ball usually moves at an average speed that easily exceeds 200km/h. This makes it really hard to make an accurate decision depending on the referees eyes. So, tennis has used scientific technology for a relatively long time, compared with the other sports. Hawk-eye debuted in the 2006 U.S. open, which was about 10 years earlier than soccer.Hawk-eye is a technology which is much more sophisticated than the VAR. 10-14 high-speed cameras are installed throughout the court, and they capture the movement of the ball at 340 frames per second. Based on images captured by high-speed cameras, each frame is analyzed and reproduced as a graphic video in a three-dimensional space to determine the judgment. This graphic video is open to referees, audiences, coaches, and players in real time. This is a characteristic and advantage that is compared with other video technologies.Each athlete can request using Hawk-eye up to three times per set. If three challenges fail in one set, they can not request any more, even if a clear misjudgment has happened. So, the players must use the challenge chances strategically. According to the statistics for the 2017 U.S. open, the percentage of decisions changed as a result of using Hawk-eye was less than a third, showing 28 percent for mens singles, and 24 percent for womens singles.Scientific technologies have been used in various sports in addition to the two cases introduced in this article. Baseball has instituted a Robot Umpire to discern the strike zone, and volleyball also uses Hawk-eye for In-out replay, and VAR technology to check for errors, like net touches.In the past, it was hard to imagine a machine making a decision rather than a human referee. However, nowadays, it is a common situation, making more precise decisions. These changes are responding to the sweat and efforts of athletes. Lets look forward to fairer decisions which will be made by more advanced levels of technology.
  • 등록일2022-01-14 13:50:16
Ride the Metaverse! 이미지
Ride the Metaverse!
  • 작성자HANBAT HERALD
  • 조회수682
  • Ride the Metaverse!By Jeong Hyo-bin Reporter, Senior of Chemical and Biological EngineeringThe word Metaverse is a combination of Meta, which means virtual and transcendent, and Universe., meaning a virtual universe.We feel awkward about the concept of the Metaverse, but we are already accustomed to it. There are many metaverse games including Roblox, Minecraft, Animal Crossing and MapleStory. All of the aforementioned games can create avatars in the virtual world, and avatars can make meetings and do economic, social and cultural activities together in the virtual world, the same as in the real world. This cyberspace is the Metaverse.Amazingly, there was a metaverse in the past, too. In 2003, Linden Lab developed the 3D virtual world service called Second Life in the US. However the service was quickly forgotten by Facebook and Twitter. In Korea, there was a metaverse concept platform with a service called CyWorld that communicated in the virtual Minihompy. As such, we have communicated in the virtual world, so we can say that we are accustomed to the concept of the metaverse. With the development of digital technology, many things have become possible in the virtual world, such as CyWorld and the world of games. The concept of the metaverse has only recently been created, and that makes us feel it is something new. However, we have lived in the metaverse already.The Metaverse is attracting attention as a content and platform. The Metaverse has become a communication platform for young people in non face-to-face situations, as a result of COVID-19. The metaverse platform (such as Roblox, Fortnite, etc.) can be seen as both a platform and contents at the same time. For example, some people enjoy Roblox as a metaverse content, and use the game world as a platform by producing and selling items to generate revenue. Companies also use the metaverse platform as a method of promoting their products.BTS first released a choreography version of Dynamite on Fortnite. Fortnite is a metaverse with more than 10 million concurrent users. Avatars of global fans enjoyed watching Dynamite music videos at a virtual space concert hall within the game. If you buy BTSs choreography emoticons in the game, your avatars can dance along. Likewise, companies promote and generate revenue through the metaverse.Rui, a virtual YouTuber (V tuber), is a cyber singer who wears virtual faces. Ruis face, as you can see on YouTube, is a face that does not exist in reality and has no problem with portrait rights. These virtual humans are made to look like cartoon characters, but they are also made into hyper-realistic virtual faces that are indistinguishable from real human faces. Metaverse is already making profits by using these models to create advertisements or idol groups such as Eternity.Not only games, but also social activities are carried out through the metaverse. In Korea, Soonchunhyang University hosted the Metaverse Entrance Ceremony for the first time. An avatar of 2,500 freshmen gathered in an online space that implemented a real campus playground in virtual reality. Avatars wore varsity jackets and listened to the presidents greetings, and had conversations with seniors and professors in cyberspace.The virtual world and the real world are getting closer, due to developing technologies and diversifying platforms. However, there are many problems such as illegal activities and judicial rights within the metaverse, and virtual world poisoning.We should enjoy the metaverse platform with the right perception. However, it is also important that the laws and preventions that regulate and control problems must also be established as the pace of technology development quickens. We cannot enjoy the metaverse without it being under some kind of control.
  • 등록일2021-07-29 12:14:09
The Next Station Is an Eco-Friendly Car 이미지
The Next Station Is an Eco-Friendly Car
  • 작성자HANBAT HERALD
  • 조회수628
  • The Next Station Is an Eco-Friendly CarBy Yoon Ji-yeon Editor-in-Chief, Junior of Electrical EngineeringWhen you think about cars, what first comes to your mind? We usually think of refueling at a petrol station, or of complex engines. These classic characteristics of cars have been emerging since the late 19th century when internal-combustion engine cars were first developed.As the engine cars usage increased, they became indispensable in our daily lives. However, the side effects also emerged continuously. By burning gasoline and diesel, whichare both fuel for car engines, fumes are emitted, consisting of carbon dioxide, carbon monoxide and hydrocarbons. Also, exhaust gases have caused environmental pollution, like ozone depletion and fine dust increase. As a solution to these problems, the eco-friendly cars have come into the limelight. So, what kinds of eco-friendly cars are there, and what are the benefits of driving eco-friendly cars? Lets find out.Electric CarThe history of the electric car is older than you thought. The first electric car was made in the 1830s, about 30 years earlier than the first internal-combustion engine car. However, the battery was too heavy, and it took too long to charge. That made the electric cars decay, unlike the engine cars. However, electric cars have come back into the spotlight as environmental pollution has worsened around the world.Electric cars use secondary batteries that charge directly by supplying electricity, and drive motors using the electric energy stored in the battery. As a result, electric cars have a huge advantage that they dont emit any atmosphere pollution matter or greenhouse gases. In addition, these cars dont use any consumables, like engine oil, fuel filters etc., and these advantages allow reducing environmental pollution and cost by consumables. They also have regenerative braking ability, and this makes the electric car able to charge on its own.Hybrid carHybrid cars have both an internal combustion engine and an electric motor. Hybrid cars use their engines and motors to suit their use when driving.It boasts more than a 40 percent higher fuel efficiency than ordinary internal combustion engine vehicles, because it has a system that mixes engine and motor driving in five driving types: Start and slow, acceleration drive, high speed, deceleration drive, and stop. The low use of fuel creates less environmental pollution. Also, it has regenerative braking ability, like the electric car, and it makes the hybrid car able to charge on its own. There is also an advantage with hybrid cars that they can be recharged much quicker because they are also charged by the engine, unlike the electric cars which take a long time.Hydrogen-electric carHydrogen-electric cars are not widely known, compared to electric cars and hybrid cars. The commercial vehicles of Hydrogen-electric cars have only recently been launched, and the research is still ongoing. The hydrogen-electric cars are powered by fuel cells that produce electricity by the reaction of hydrogen and oxygen in the air. In other words, this car is powered by the electrical energy that is transformed from the chemical energy of hydrogen. In this process, this car only emits water and heat. This is why hydrogen-electric cars are called zero-emit vehicles, and are in the limelight as eco-friendly vehicles.In addition, hydrogen-electrical cars can purify the air. They suck the air, purify it, use it for hydrogen fuel cells, and then exhale clean air back into the exhaust vent. This has given the hydrogen-electric car the nickname of the Moving Air Purifier. Taking advantage of these benefits, the hydrogen-electrical cars are used as large sized busses, and public institution vehicles.The benefits of eco-friendly carsThe government is also planning to actively distribute such eco-friendly cars. The Korean government distributed 136,000 eco-friendly cars in 2021, and has set a goal for distributing 7,850,000 eco-friendly cars by 2030. To achieve this goal, the government and local governments are also making efforts to provide subsidies and other benefits.If you have an electric car, you can get subsidies of up to 8 million won. However, this differs according to the price of vehicles and the local governments that provide the subsidies.In the case of hybrid cars, the consumption taxes included in the price of cars can be reduced by about 1 million won when purchasing cars. Besides this, there are various other benefits like motorway tolls, 50 percent off, public parking fees, 50 percent off, etc. You can get more specific information about the model, and benefits through the QR code on the right side.To solve the problem of environmental pollution, engineers and scientists are working on new technologies. To help the planet, why dont we buy eco-friendly vehicles with no emissions? This will make the environment more healthy in the future.
  • 등록일2021-07-29 12:12:14
Wise Mask Etiquette 이미지
Wise Mask Etiquette
  • 작성자HANBAT HERALD
  • 조회수742
  • Wise Mask EtiquetteBy Park Hyeon-su Chief Editor, Senior of English Language and LiteratureAs COVID-19 is spreading throughout the world, wearing a mask is becoming a more natural etiquette. The mask has become an indispensable necessity in our daily lives to protect our health. However, masks have a one-time use, so the amount of mask waste is also enormous. These discarded masks are so light that they fly off easily during the garbage disposal process. Unfortunately, abandoned masks have been found trapped around parts of the bodies of helpless wildlife, causing many animals, such as young seagulls, to suffer. It is very important to wear masks to fight this disease. But, how can we dispose of our masks wisely?1. All types of masks, regardless of material are discarded as general waste.According to the Environment Ministrys recycling separation and discharge guide, masks are registered as general waste. All kinds of masks, regardless of material, such as vinyl-coated paper, nonwoven fabric and cotton, are treated as general waste. Therefore, they must be placed in a pay-as-you-go bag to be incinerated. Because used masks are contaminated, you must wash your hands and disinfect for hygiene after discarding the mask.2. Fold the contaminated surface out of reach, tie it with a string, and discard it.Because the surface of the mask is exposed to the outside, it is contaminated with various viruses and dust. Therefore, be careful not to touch the surface when removing the mask. To discard the mask, first, grab the edge and fold it twice so that the outer surface goes inside. Second, roll it so that it doesnt spread out and tie it with a string. Third, spray sterilizers or seal them in plastic bags, etc. Afterwards, you can put it deep in a standard plastic bag to prevent it from leaking out during collection. Also, you must disinfect your hands after you throw away the mask. This is because hands may have been contaminated during the process of taking off the mask and folding it.3. Disinfect, seal and collect them in a waste bag at the public health center.If used by a person with a confirmed diagnosis or one who is in self-quarantine, their masks, gloves, and disinfectants are all classified and treated as medical waste. Therefore, this waste should be sterilized and placed in a dedicated envelope-type kit provided by a competent health center and kept completely sealed. The envelope is later collected or disposed of separately by visiting an isolation site at the health center.4. Crop Mask String CampaignThe Korea Environment Corporation said that it is a good idea to tie up the mask strap instead of rolling it around. However, the material of the mask is light and the strap is loosened easily. The loose mask has a large area for its weight, so it flies well. Recently, the issue of wildlife suffering from masks has spread around the world. This is because a mask was seen tied to an animals leg after flying over a garbage dump.As a result, many animal rights groups and celebrities have launched campaigns and challenges to cut mask straps on social networking sites. The British Royal Society of Animals (RSPA) pointed out on Twitter that abandoned mask ear straps are causing animals to suffer because they cannot untie human waste trapped on their bodies. Kwon Joon-soo, a professor at Seoul National University Hospital, recently said on his personal SNS that, there are cases in which animals are tied up after trying to find food in garbage cans. I thought I should cut off the strap of my mask and throw it away. Lets cut the string with scissors and throw it away. As this fact became known, the mask strap-cutting campaign quickly spread.The act of throwing away contaminated masks on the streets for fear of taking them home can cause environmental pollution as well as the spread of COVID-19. Therefore, lets make sure to practice wise mask habits for a healthy daily life.
  • 등록일2021-01-16 14:49:26