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Gimme Carbon Credit  이미지
Gimme Carbon Credit
  • 작성자HANBAT HERALD
  • 조회수7574
  • Gimme Carbon CreditBy Woo Jung-kyu Reporter, Junior of Industrial EngineeringRecently, the ecosystem was destroyed because of global warming. For example, polar bears are losing their homes and plants are blooming earlier. Why does global warming occur? To put it simply, global warming occurs when the concentration of greenhouse gases increases. Carbon dioxide (CO2) in greenhouse gases takes up 80 percent of human activities all around the world. Therefore, we can recognize that greenhouse gases from human activities are CO2. For decades, global warming was accelerated because CO2 concentration in the atmosphere increased rapidly caused by human industrial activity. The increase of extreme weather and natural disasters due to global warming is causing massive damage to human life and property. Carbon emission reduction will be essential to solve these problems, for this carbon credits has been implemented.Carbon creditsCarbon credits are not only the right to emit a certain amount of carbon dioxide, but also one of the policies to reduce carbon emission, as a right published by a government or an international organization. That purpose is to control and reduce carbon emissions in various areas such as power generation, industry and transportation.Despite, exceeding the permitted amount often occurs despite efforts to reduce carbon emissions. How does the conglomerate cope with that case? Using the carbon credit trading system is a solution for it. The images below will help you to understand the carbon credit trading system. Carbon credits are issued by the UN, that can be traded freely like products in the market. In Korea, it has been implemented since January 1, 2015.▼Example of Carbon credits trading systemThe carbon emissions purchased by each company will be different.Company A exceeds emissions, Company B remains behind.The form in which Company A purchases emission rights from Company C is carbon emission trading.Carbon credit market rolls as an economic stimulus to a company or country. A company that cannot reduce emissions will have to buy extra emissions, so it will cause an economic burden. Therefore, a company will put in more efforts such as development and investment in technologies that reduce greenhouse gas emissions. Also, countries or companies that get profits from the carbon credit market can invest in reducing carbon emissions or use them to develop eco-friendly technologies, creating a win-win situation in which environmental preservation and economic development can occur at the same time. Lets see which company is using which technologies to reduce carbon emissions.The first is LG Chems LinStorage battery. The linstorage battery is a type of lithium-ion battery, an eco-friendly energy storage system, and a system that can store and efficiently use energy generated by solar power and wind power. The lean storage battery is a module form made by combining several types of battery cells, and performs power conversion and storage functions in combination with a power control device having energy storage and control functions. These lean storage batteries are connected to existing power plants and power grids and play a major role in increasing the stability of power supply and demand. By storing electricity produced by solar or wind power plants through lean storage batteries and supplying it to the power grid when necessary, energy can be used efficiently, increasing power supply stability and reducing carbon emissions.The second is SK Innovations carbon reduction technology CCS. CCS technology collects carbon dioxide in the atmosphere and stores it in an underground water layer, which plays a major role in preventing global warming by effectively managing carbon dioxide in the atmosphere as well as reducing carbon emissions. SK Innovation is focusing on reducing corporate carbon emissions by utilizing these CCS technologies. For example, SK Innovations Ulsan Petrochemical Complex collects more than 1 million tons of carbon dioxide per year by installing CCS equipment. It is also making efforts to develop carbon-neutral steel production technology.The third is Samsung Electronics Digital inverter technology. Digital inverter technology is a technology that controls motors used in home appliances such as air conditioners and refrigerators. The existing motor control method uses DC power, and in this case, the power consumption was high because power supply had to be continuously performed. However, using digital inverter technology, the motor can be controlled by alternating current power. Therefore, when measuring motor speed, the optimal power is calculated in an easier way to drive the motor, which reduces power consumption by up to 50 percent. Accordingly, Samsung Electronics can obtain the effect of reducing power consumption and carbon emission in home appliances. Since home appliances such as air conditioners and refrigerators use electricity all day long, it is very important to reduce power consumption. By applying digital inverter technology, power consumption can be reduced, electricity bills can be reduced, and it is also of great help in protecting the global environment.The fourth is the CO2 collection technology for blue hydrogen production by the Korea Institute of Energy Technology. This technology aims to reduce greenhouse gas emissions, which are the cause of global warming, by collecting CO2 generated by producing hydrogen using fossil fuels, and consists of two main stages. The first step is to collect CO2 generated by thermal power plants and industries. To this end, the researcher is developing various CO2 capture technologies. Representative technologies include ammonia condensation technology, ammonia pyrolysis technology, and methanation reaction technology. The second step is to produce hydrogen using the collected CO2. It is developing a technology to produce blue hydrogen by combining the collected CO2 with hydrogen. Such blue hydrogen is a clean fuel in itself and can also be used in combination with hydrogen fuel conversion technology. CO2 capture technology plays a major role in research and technology development for a sustainable environment.Like this, countries and various companies are making an effort for carbon neutrality to reduce carbon emissions through carbon credits. But efforts for carbon neutrality are important not only at the national level, but also at the individual level. Reducing carbon emissions by individuals is a lot of great help to countermeasures at the national level. In order to reduce carbon emissions for individuals, we have to think of and practice various ways. Let me tell you five representative ways of practice.First, energy conservation is one of the easiest ways for an individual to do it. In everyday life, you can save energy by replacing lights with LED or reducing habitual electricity consumption. In addition, when using air conditioners and heaters, just lowering or raising the temperature by about 1℃can have a very great energy saving effect.Second, using public transportation is also very helpful in reducing carbon emissions. Thinking about transportation, such as using public transportation or riding a bicycle instead of a car, can reduce emissions from personal car use.Third, improving eating habits is very important in reducing carbon emissions. It is important to eat more vegetables or fruits instead of meat, and to actively recycle leftovers from life. Through this, you can enjoy the effect of reducing carbon emissions due to improved eating habits.Fourth, recycling plays a major role in reducing carbon emissions. It is important to separate and recycle paper, glass, metal, etc. Through this, you can enjoy the effect of reducing carbon emissions due to recycling.Fifth, it is important to use eco-friendly products. Using detergents, eco-friendly cosmetics, and eco-bags with low chemical ingredients can reduce carbon emissions.In addition, as shown in the picture below, there are many ways that we can practice reducing carbon emissions in our daily lives. Countries and companies are also realizing the seriousness of carbon emissions and making great efforts. Therefore, lets realize their hard work, practice carbon neutrality in our daily lives, and overcome global warming together!
  • 등록일2023-10-11 00:01:37
How COVID-19 Vaccines Differ from Traditional Vaccines 이미지
How COVID-19 Vaccines Differ from Traditional Vaccines
  • 작성자HANBAT HERALD
  • 조회수7581
  • How COVID-19 Vaccines Differ from Traditional VaccinesBy Kim Min-joong Reporter, Senior of Mechanical EngineeringDo you still think vaccines involve injecting weakened or dead pathogens into the body? The emergence of the sudden pandemic, COVID-19, has brought about a paradigm shift in the concept of vaccines. Unlike traditional vaccines, COVID-19 vaccines, which belong to a different category, were developed rapidly with worldwide attention within just one year of the outbreak. Therefore, public confidence in vaccines was initially low. Despite many peoples concerns, messenger RNA (mRNA)-based COVID-19 vaccines have been validated for their safety and scientific superiority, and have enabled many people to become protected against COVID-19 through this new type of vaccine. As a novel concept, mRNA-based COVID-19 vaccines cannot be explained solely by previously used vaccine methods because they do not involve the injection of pathogens into the body. Unlike previous methods, mRNA vaccines only contain genetic information required to create a portion of the pathogen. In the case of COVID-19 vaccines, mRNA that creates spike proteins is delivered into the body. Then Our bodys cells use this mRNA to create spike proteins, which can recognize and prevent infection of COVID-19 virus. Therefore, the reason why we have received repeated doses of the COVID-19 vaccine is to strengthen the immune response and provide ongoing protection, since initially generated antibodies via mRNA may not be enough.The reason mRNA vaccines were able to be developed is due to the key technology of microchannels. Microchannels are, literally, micro-sized channels, and although they were not originally used in vaccine technology, they became the key point in the development of mRNA vaccines. After mRNA enters the cell, two problems must be solved to produce spike proteins that trigger an immune response to the disease. The first problem is the innate immune response. When mRNA enters our body, our body recognizes it as an invader and produces mRNA-degrading enzymes to protect itself. The second problem is the instability of RNA. mRNA cannot enter the cell because its molecular size is too large and it is disassembled outside the cell. Therefore, scientists applied Lipid Nano Particle (LNP) technology to mRNA to solve these problems. By wrapping the mRNA with LNP, innate immune response and RNA instability can be overcome, and mRNA can be safely transported to target tissues and cells. Microchannels play a crucial role in maximizing the possibility of wrapping mRNA with LNP to solve the aforementioned problems.Microchannel is a key technology that achieves short mixing length, fast time, and high efficiency, a lot of research on microchannel development is going on. Professor Joachim Franks group, a world-renowned researcher, has utilized butterfly-shaped channels to conduct research. This microchannel shows high mixing efficiency at a short mixing length, where one fluid flow separates and repeatedly rejoins. This method is one of the techniques mainly used to improve the mixing efficiency of passive microchannels. Additionally, this microchannel shows close to 100 percent efficiency when the fluid reaches a short length of about 400 m at a specific flow rate.The reason for the high efficiency of microchannels can be confirmed through the analysis based on fluid mechanics. Due to the structural characteristics of the butterfly channel, the vortex is formed in a specific plane of the channel as shown in the figure and repeated in all elements. The vortex generated solely by these structural characteristics it has a significant effect on mixing even without external forces such as pressure, electricity, magnetism, and sound waves.In the past, microchannels were primarily used in the fields of chemistry, aerospace, and heat transfer, but now they have helped save humanity from COVID-19. mRNA vaccines, with their rapid and flexible inherent properties, are not limited to COVID-19 vaccines. Once the genetic information of the pathogen is known, mRNA can be quickly designed and produced to provide solutions for cancer and infectious diseases. Although microchannels were used in the production of vaccines, their high mixing efficiency and fast mixing characteristics, which are inherent in microchannel technology, will be applied to many fields in the future. Ultimately, just as we used existing technology to develop mRNA vaccines, we do nott always need to look far for answers. The important thing is to realize that the answers are close at hand and to figure out how to utilize them.[reference][1] Passive microfluidic device for submillisecond mixing, Zonghuan Lu, et al. Sensors and Actuators B 144 (2010) 301309[ Fig1. Configuration of the Micromixer, with the Detailed Dimensions Labeled ][ Fig3. Velocity Vectors at Different Planes Normal to the Flow Path of the First Butterfly Mixing Element (from plane (a) to plane (f)). Flow rate was set at 6.0 L/s ][ Fig2. Mixing Index of Simulation Results Along the Mixer Channel at Various Flow Rates ]
  • 등록일2023-10-11 00:00:20
Microplastic 이미지
Microplastic
  • 작성자HANBAT HERALD
  • 조회수7546
  • MicroplasticBy Lee Hae-rin Reporter, Junior of English Language and LiteraturePollution from microplastic is one of the environmental problems that has recently received a lot of attention worldwide. Microplastics are very tiny particles that occur in the process of decomposing plastic products in nature and are more than 100 nm and less than 5mm in size. Then, where are microplastics coming from? Microplastics are too tiny to be filtered by sewage treatment facilities, but they flow directly into the sea and rivers. Eighty percent of the plastic flowing into the sea comes from land and 20 percent are nets and styrofoam thrown away by fishermen. If the seawater is full of plastic like this, we may end up consuming them when we eat fish, seaweed, and shellfish. The same is true of plastics buried underground. If plastic bags, delivery food containers, and discarded wet wipes made of plastic materials are buried in the ground, microplastics will enter the human body when eating plants, fruits, and vegetables from the soil. Lastly, plastics are also found in the atmosphere. Microplastics are also detected in bottled water that we drink because water vapor evaporated from the sea becomes rain and collects after it falls to the ground. How will microplastics generated in this way affect our bodies and environment?More than 90 percent of the plastic absorbed in the human body is excreted through bowel movements. However, the problem is the accumulated plastic in the human body. It does not decompose in the body because of its microscopic size but moves through lymphatic vessels and penetrates cells. Depending on where microplastics have penetrated, it can cause various cancers such as lung cancer, breast cancer, prostate cancer, thyroid cancer, and uterine cancer. Also, there is a risk of penetrating the brain and affecting various brain diseases and lives.Microplastics are also having a bad effect on the environment. Microplastics accumulate in the soil, which degrades the soil and prevents moisture from entering the soil properly. In addition, about 10 million tons of plastic waste are generated in the sea every year. Compared to fish without microplastics, studies have shown that fish with microplastics have reduced their lifespan and body size, including productivity and proteolysis capacity.Lets look at the main objects in everyday life that release microplastics.First, it is the delivery food we often eat. When food is delivered, it is served in a plastic container. Disposable plastic containers bring convenience to our lives but adversely affect health and the environment. It takes more than 500 years for plastic containers to decompose, and it is highly likely that harmful substances will be released if hot food is contained or heated in a microwave. Therefore, those who order delivery food frequently increase their exposure to microplastics, and the more frequently they order, the more microplastics are released.Second, it is the disposable wet tissue that has a negative impact on the environment. Most disposable wet tissues on the market use a plastic material called polyester, so using disposable wipes to clean stains and dust is the same as using disposable plastic.Finally, the convenient teabag that we find when we want to drink a cup of tea contains plastic fibers, so if we add tea bags to drink tea, microplastics enter our bodies.Thus, we should make efforts to reduce microplastics that cause serious problems in the human body and the environment. Lets refrain from using disposable products and use alternatives or multi-use products. For example, why dont you try a personal tumbler or mug instead of a plastic disposable cup at a caf or restaurant? Furthermore, try to use handkerchiefs instead of wet wipes, natural sponges instead of iron sponges, eco bags instead of plastic bags, multi-use lenses instead of disposable lenses, and try to make tea with grains instead of disposable tea bags. If you use plastic, it is also necessary to thoroughly recycle. Recycling the collected plastic can slow the progress of environmental pollution. In addition, microplastics float in the air and show high concentrations indoors, so making frequent ventilation and cleaning is one way to reduce microplastics in daily life.If you abandon the idea of Who cares if I litter or not and practice efforts to lessen microplastics in your life, you will be able to slow down the microplastic disaster. Lets practice efforts to reduce microplastics for the clean sea, marine life, and our health.
  • 등록일2023-10-10 23:59:44
Bitcoin 이미지
Bitcoin
  • 작성자HANBAT HERALD
  • 조회수4918
  • 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
  • 조회수4840
  • 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
  • 조회수4934
  • 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
  • 조회수1640
  • 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
  • 조회수1599
  • 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
  • 조회수2129
  • 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
  • 조회수2162
  • 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