The Songdo Convensia Convention Center is the first project completed in Songdo IBD and opened for business on October 7, 2008. Its innovative design by KPF and Baum elicits thoughts of the Sydney Opera House and is a landmark structure in Korea; the main exhibition hall has one of the largest column-free spans in Asia. Donated to the City of Incheon by Gale International and POSCO E&C and managed by Incheon Tourism Organization, Songdo Convensia now hosts international conferences, trade shows and meetings, has become a popular filming location for commercials and music videos. Facilities available at Songdo Convensia include two main exhibition halls, 23 conference rooms and 3 ballrooms; some of the support facilities at Songdo Convensia include wireless internet capabilities throughout the entire convention center, RFID card systems, voice recognition cameras, interpretation in 8 languages. Songdo Convensia received LEED New Construction 2.2 Certified rating, become the first convention facility to be LEED certified in Asia.
Songdo Convensia Official Website Songdo Convensia from Songdo IBD Songdo Convensia from KPF
Waders are birds found along shorelines and mudflats that wade in order to forage for food in the mud or sand. They are called shorebirds in North America, where the term "wader" is used to refer to long-legged wading birds such as storks and herons. Waders are members of the order Charadriiformes, which includes gulls and their allies. There are about 210 species of wader, most of which live in coastal environments. Many species of Arctic and temperate regions are migratory, but tropical birds are resident, or move only in response to rainfall patterns; some of the Arctic species, such as the little stint, are amongst the longest distance migrants, spending the non-breeding season in the southern hemisphere. Many of the smaller species found in coastal habitats but not the calidrids, are named as "sandpipers", but this term does not have a strict meaning, since the upland sandpiper is a grassland species; the smallest member of this group is the least sandpiper, small adults of which can weigh as little as 15.5 grams and measure just over 13 cm.
The largest species is believed to be the Far Eastern curlew, at about 63 cm and 860 grams, although the beach thick-knee is the heaviest at about 1 kg. In the Sibley-Ahlquist taxonomy and many other groups are subsumed into a enlarged Ciconiiformes order. However, the classification of the Charadriiformes is one of the weakest points of the Sibley-Ahlquist taxonomy, as DNA–DNA hybridization has turned out to be incapable of properly resolving the interrelationships of the group; the waders were united in a single suborder Charadrii, but this has turned out to be a "wastebasket taxon", uniting no less than four charadriiform lineages in a paraphyletic assemblage. However, it indicated that the plains wanderer belonged into one of them. Following recent studies, the waders may be more subdivided as follows: Suborder Scolopaci Family Scolopacidae: snipe, sandpipers and allies Suborder Thinocori Family Rostratulidae: painted snipe Family Jacanidae: jacanas Family Thinocoridae: seedsnipe Family Pedionomidae: plains wanderer Suborder Chionidi Family Burhinidae: thick-knees Family Chionididae: sheathbills Family Pluvianellidae: Magellanic plover Suborder Charadrii Family Ibidorhynchidae: ibisbill Family Recurvirostridae: avocets and stilts Family Haematopodidae: oystercatchers Family Charadriidae: plovers and lapwingsIn keeping more in line with the traditional grouping, the Thinocori could be included in the Scolopaci, the Chionidi in the Charadrii.
However, the increasing knowledge about the early evolutionary history of modern birds suggests that the assumption of Paton et al. and Thomas et al. of 4 distinct "wader" lineages being present around the Cretaceous–Paleogene boundary is correct. Shorebirds is a blanket term used to refer to multiple species of birds that live in wet, coastal environments; because most these species spend much of their time near bodies of water, many have long legs suitable for wading. Some species prefer locations with rocks or mud. Many shorebirds display migratory patterns and migrate before breeding season; these behaviors explain the long wing lengths observed in species, can account for the efficient metabolisms that give the birds energy during long migrations. The majority of species eat. Different lengths of bills enable different species to feed in the same habitat on the coast, without direct competition for food. Many waders have sensitive nerve endings at the end of their bills which enable them to detect prey items hidden in mud or soft soil.
Some larger species those adapted to drier habitats will take larger prey including insects and small reptiles. Shorebirds, like many other animals, exhibit phenotypic differences between males and females known as sexual dimorphism. In shorebirds, various sexual dimorphisms are seen, but not limited to, size and agility. In polygynous species, where one male individual mates with multiple female partners over his lifetime, dimorphisms tend to be more diverse. In monogamous species, where male individuals mate with a single female partner, males do not have distinctive dimorphic characteristics such as colored feathers, but they still tend to be larger in size compared to females; the suborder of Charadrii displays the widest range of sexual dimorphisms seen in the Charadriiformes order. However, cases of sexual monomorphism, where there are no distinguishing physical features besides external genitalia, are seen in this order. One of the biggest factors that leads to the development of sexual dimorphism in shorebirds is sexual selection.
Males with ideal characteristics favored by females are more to reproduce and pass on their genetic information to their offspring better than the males who lack such characteristics. Mentioned earlier, male shorebirds are larger in size compared to their female counterparts. Competition between males tends to lead to sexual selection toward larger males and as a result, an increase in dimorphism. Bigger males tend to have greater access to female mates because their larger size aids them in defeating other competitors. If the species exhibits gender role reversal males will select female mates based on traits that are the most appealing. In the Jacana species, fe
Incheon the Incheon Metropolitan City, is a city located in northwestern South Korea, bordering Seoul and Gyeonggi to the east. Inhabited since the Neolithic, Incheon was home to just 4,700 people when it became an international port in 1883. Today, about 3 million people live in the city, making it South Korea's third most-populous city after Seoul and Busan; the city's growth has been assured in modern times with the development of its port due to its natural advantages as a coastal city and its proximity to the South Korean capital. It is part of the Seoul Capital Area, along with Seoul itself and Gyeonggi Province, forming the world's fifth largest metropolitan area by population. Incheon has since led the economic development of Korea by opening its port to the outside world, ushering in the modernization of Korea as a center of industrialization. In 2003, the city was designated as Korea's first free economic zone. Since large local companies and global enterprises have invested in the Incheon Free Economic Zone, including Samsung which chose Songdo International City as its new investment destination for its bio industry.
As an international city, Incheon has held numerous large scale international conferences, such as the Incheon Global Fair & Festival in 2009. The 17th Asian Games Incheon 2014 was held in Incheon on 19 September 2014. Incheon has established itself as a major transportation hub in northeast Asia with the Incheon International Airport and Incheon Port; the city is home to the Green Climate Fund, an international organization addressing environmental issues. The first historical record of the Incheon area dates back to 475 CE, during the reign of King Jangsu of Goguryeo, by the name of Michuhol, supposed to be located on today's Munhak Hill; the area underwent several name changes with successive dynasties. In Goryeo era, Incheon was called Inju; the current name was turned to Incheon in 1413. Incheon County became Incheon Metropolitan Prefecture. Old Incheon consisted of today's southern Incheon and northern part of Siheung City; the city centre was Gwangyo-dong, where the local academy were located.
The "original" two remaining buildings of the Incheon prefecture office are located in Munhak Elementary School, while the newly built prefecture office buildings are right across from Munhak Baseball Stadium. Another historical name of the city, was not used until the opening of the port in 1883. After the opening of the Incheon port, the city centre moved from Gwangyo to Jemulpo. Today, either Jemulpo or Gwangyo-dong is considered "Original Incheon", it was renamed as Jinsen during Japanese rule in Korean peninsula. In 1914, the Japanese colonial government merged outer parts of old Incheon with Bupyeong County, forming Bucheon County. Through 1936 and 1940, some part of Bucheon County was recombined into Incheon City, by which some part of "old" Bupyeong was annexed into Incheon. Incheon was part of Gyeonggi Province, but was granted Directly Governed City status on July 1, 1981. In 1989, neighbouring islands and Gyeyang township of Gimpo County were ceded to Incheon and in 1995 Geomdan township of Gimpo Country and two counties of Ganghwa and Onjin were annexed to Incheon Metropolitan City.
Incheon was known as Inchon prior to South Korea's adoption of a new Romanization system in 2000. The city was the site of the Battle of Chemulpo Bay, where the first shots of the Russo-Japanese War were fired. During the Korean War, Incheon was occupied by North Korean troops on 4 September 1950. Eleven days Incheon was the site of the Battle of Inchon, when United States troops landed to relieve pressure on the Pusan Perimeter and to launch a United Nations offensive northward; the result was a decisive UN victory and it was recaptured on 19 September 1950. The USS Inchon was named after the tide-turning battle. Incheon has hosted a series of major international events; the Global Fair & Festival 2009 Incheon was held in the Songdo District in August 2009. It was open from 7 August to 25 October for a period of 80 days, it was a comprehensive international event with global institutions and corporations as participants. Various musicians and artists performed during the event; the city hosted a meeting of the G20 Finance Ministers in February 2010.
Incheon was the site of the third Global Model United Nations Conference, held from 10th to the 14th of August 2011. It first hosted the Incheon Women Artists' Biennale in 2004 which expanded into welcoming international artists in its subsequent 2007, 2009 and 2011. Incheon hosted the Asian Games in 2014. On 27 February 2007, Incheon declared itself an "English City," and inaugurated the "Incheon Free English Zone" program; the goal of the program is to make the city as proficient in English as Hong Singapore. This is for the ultimate purpose of establishing Incheon as a commercial and business hub of northeast Asia; the official slogan of the program is "Smile with English." Incheon is home to a number of colleges and universities: George Mason University Korea Campus Ghent University Global Campus Gyeongin National University of Education Incheon campus Inha University Gachon University Medical·Ganghwa campus Gyeongin Women's College Inha Technical College Incheon Catholic University Incheon City College I
The Incheon Bridge is a reinforced concrete bridge in South Korea. At its opening in October 2009, it became the second connection between Yeongjong Island and the mainland of Incheon; the Incheon Bridge is South Korea's longest spanning cable-stayed bridge. In comparison, it is the world's tenth longest cable-stayed bridge as of January 2019; the bridge provides direct access between Songdo and Incheon International Airport, reducing travel time between them by up to one hour. The section of the bridge crossing the sea, whose concessionaire is Incheon Bridge Corporation, is funded by the private sector. Korea Expressway Corporation and the Korean Ministry of Land and Maritime Affairs managed the project; the main design and build contractor was Samsung C&T Corporation JV. Total costs were ₩2.45 trillion, including federally funded approach roads. The 21.38-kilometre-long highway project consisted of government-built sections at three ends and a 12.34 kilometres section in the middle built with private capital.
The bridge section is 18,384 metres long. The bridge has a cable; this was the most difficult part to construct, with a main tower 230.5 metres high, vertical clearance of 74 m, five spans: a centre span of 800 m flanked on either side by spans of 260 m and 80 m. Adjacent to the center section are approach spans consisting of a series of 150 m balanced cantilever spans. Lower-level viaducts consisting of 50 m spans connect to land at each end of the bridge; because the bridge is situated in a known seismically-active region, a seismic design of the substructure was adopted. At 12.3 km long, with a main cable stayed span of 800m, the new Incheon Bridge is one of the five longest of its type in the world. Its 33.4m wide steel/concrete composite deck carries six lanes of traffic 74 m above the main shipping route in and out of Incheon port and links Incheon International Airport on Yeongjong Island to the international business district of New Songdo City and the metropolitan districts of South Korea's capital, Seoul.
The cable stayed section of the crossing is 1,480 m long, made up of five spans measuring 80 m, 260 m, 800 m, 260 m and 80 m respectively: height of the inverted Y main towers is 230.5 m. A 1.8 km approach span and 8.7 km viaduct complete the crossing, both constructed with precast prestressed concrete box girder decks. Foundations are drilled piles 3 m in diameter. In order to accommodate movement between the bridge decks, the Incheondaegyo was equipped with expansion joints weighing up to 50 tons per joint. On May 20, 2010, twelve passengers were killed in a bus crash at the bridge. Official Website Roadtraffic Technology Incheon Bridge at Structurae DYWIDAG Post-Tensioning System incorporated into Korea's largest bridge construction project
Central Park is an urban park in Manhattan, New York City. It is located between the Upper West Side and Upper East Side bounded by Fifth Avenue on the east, Central Park West on the west, Central Park South on the south, Central Park North on the north. Central Park is the most visited urban park in the United States, with 40 million visitors in 2013, one of the most filmed locations in the world. In terms of area, Central Park is the fifth largest park in New York City. Central Park was first approved in 1853 as a 778-acre. In 1857, landscape architect Frederick Law Olmsted and architect/landscape designer Calvert Vaux won a design competition to construct the park with a plan they titled the "Greensward Plan". Construction began the same year, the park's first areas were opened to the public in late 1858. Additional land at the northern end of Central Park was purchased in 1859, the park was completed in 1873. After a period of decline in the early 20th century, New York City parks commissioner Robert Moses started a program to clean up Central Park.
Another decline in the late 20th century spurred the creation of the Central Park Conservancy in 1980, which refurbished many parts of the park during the 1980s and 1990s. Central Park was designated a National Historic Landmark by the U. S. Department of the Interior in 1963, it was placed on the tentative list for UNESCO World Heritage sites in April 2017; the park, managed for decades by the New York City Department of Parks and Recreation, is managed by the Central Park Conservancy under contract with the municipal government in a public-private partnership. The Conservancy is a non-profit organization that contributes 75 percent of Central Park's $65 million annual budget and is responsible for all basic care of the 843-acre park. Central Park is the fifth-largest park in New York City, behind Flushing Meadows-Corona Park, Van Cortlandt Park, the Staten Island Greenbelt, Pelham Bay Park. Central Park is located on 843 acres of land; the park, with a perimeter of 6.1 miles, is bordered on the north by Central Park North, on the south by Central Park South, on the west by Central Park West, on the east by Fifth Avenue.
It is 2.5 miles long between Central Park South and Central Park North, is 0.5 mile wide between Fifth Avenue and Central Park West. Central Park's size and cultural position, similar to London's Hyde Park and Munich's Englischer Garten, has served as a model for many urban parks, including San Francisco's Golden Gate Park, Tokyo's Ueno Park, Vancouver's Stanley Park; the park, which receives 35 million visitors annually, is the most visited urban park in the United States. It is the most filmed location in the world. A December 2017 report found that 231 movies have used Central Park for on-location shoots, more than the 160 movies that have filmed in Greenwich Village or the 99 movies that have filmed in Times Square; because of its cultural and historical significance, Central Park has been a National Historic Landmark since 1962. Central Park is divided into thirds. From north to south, they are the "North End", north of the Jacqueline Kennedy Onassis Reservoir; the park contains six visitor centers: Charles A. Dana Discovery Center, North Meadow Recreation Center, Belvedere Castle, Chess & Checkers House, the Dairy, Columbus Circle.
While planting and land form in much of the park appear natural, it is in fact entirely landscaped. The park contains several natural-looking lakes and ponds that have been created artificially by damming natural seeps and flows. There is a large area of woods in addition to seven major lawns, the "meadows", many minor grassy areas; the 6 miles of drives within the park are used by joggers, cyclists and inline skaters. Central Park constitutes its own United States census tract, number 143. According to American Community Survey 5-year estimates, the park's population in 2017 was four people, all female, with a median age of 19.8 years. However Central Park officials have rejected the claim of anyone permanently living there; the real estate value of Central Park was estimated by property appraisal firm Miller Samuel to be about $528.8 billion in December 2005. Central Park is patrolled by its own New York City Police Department precinct, the 22nd Precinct, located at 86th Street Transverse Road.
The precinct employs both regular auxiliary officers. The 22nd Precinct has a lower crime rate than in the 1990s, with crimes across all categories having decreased by 87.2% between 1990 and 2018. The precinct saw 0 murders, 3 rapes, 13 robberies, 4 felony assaults, 0 burglaries, 27 grand larcenies, 0 grand larcenies auto in 2018; the New York City Parks Enforcement Patrol patrols Central Park. There is an all-volunteer ambulance service, the Central Park Medical Unit, that provides free emergency medical service to patrons of Central Park and the surrounding streets, it operates a rapid-response bicycle patrol during major events such as the New York City Marathon, the 1998 Goodwill Games, concerts in the park. The park is maintained by the Central Park Conservancy, a private, not-for-profit organization that manages the park under a contract with the New York City Department of Parks and Recreation, in which t
Leadership in Energy and Environmental Design
Leadership in Energy and Environmental Design is one of the most popular green building certification programs used worldwide. Developed by the non-profit U. S. Green Building Council it includes a set of rating systems for the design, construction and maintenance of green buildings and neighborhoods that aims to help building owners and operators be environmentally responsible and use resources efficiently. Development of LEED began in 1993, spearheaded by Natural Resources Defense Council senior scientist Robert K. Watson; as founding chairman of the LEED Steering Committee, Watson led a broad-based consensus process until 2007, bringing together non-profit organizations, government agencies, engineers, builders, product manufacturers and other industry leaders. The LEED initiative was supported by a strong USGBC Board of Directors, chaired by Steven Winter from 1999 to 2003, active staff, including Nigel Howard. At that time, USGBC’s Senior Vice President of LEED, Scot Horst, became chair of the LEED Steering Committee before joining USGBC staff.
Early LEED committee members included USGBC co-founder Mike Italiano, architects Bill Reed and Sandy Mendler, builders Gerard Heiber and Myron Kibbe, engineer Richard Bourne. As interest in LEED grew, in 1996, engineers Tom Paladino and Lynn Barker co-chaired the newly formed LEED technical committee. From 1994 to 2015, LEED grew from one standard for new construction to a comprehensive system of interrelated standards covering aspects from the design and construction to the maintenance and operation of buildings. LEED has grown from six volunteers on one committee to 119,924 staff and professionals. LEED standards have been applied to 83,452 registered and certified LEED projects worldwide, covering around 13.8 billion square feet. Many U. S. federal agencies and states and local governments require or reward LEED certification. However, four states have banned the use of LEED in new public buildings, preferring other industry standards that the USGBC considers too lax. Unlike model building codes, such as the International Building Code, only members of the USGBC and specific "in-house" committees may add to, subtract from, or edit the standard, subject to an internal review process.
Proposals to modify the LEED standards are offered and publicly reviewed by USGBC's member organizations, which number 12,216. USGBC's Green Business Certification Inc. offers various accreditation to people who demonstrate knowledge of the LEED rating system, including LEED Accredited Professional, LEED Green Associate, since 2011, LEED Fellows, the highest designation for LEED professionals. GBCI certifies projects pursuing LEED. LEED has evolved since 1998 to more represent and incorporate emerging green building technologies; the pilot version, LEED New Construction v1.0, led to LEED NCv2.0, LEED NCv2.2 in 2005, LEED 2009 in 2009. LEED v4 was introduced in November, 2013; until October 31, 2016, new projects could choose between LEED 2009 and LEED v4. New projects registering after October 31, 2016 have been required to use LEED v4. LEED 2009 encompasses ten rating systems for the design and operation of buildings and neighborhoods. Five overarching categories correspond to the specialties available under the LEED professional program.
That suite consists of: Green Building Design & Construction LEED for New Construction LEED for Core & Shell LEED for Schools LEED for Retail: New Construction and Major Renovations LEED for HealthcareGreen Interior Design & Construction LEED for Commercial Interiors LEED for Retail: Commercial InteriorsGreen Building Operations & Maintenance LEED for Existing Buildings: Operations & MaintenanceGreen Neighborhood Development LEED for Neighborhood DevelopmentGreen Home Design and Construction LEED for Homes LEED forms the basis for other sustainability rating systems such as the Environmental Protection Agency's Labs21. To make it easier to follow LEED requirements, in 2009 USGBC helped BuildingGreen develop LEEDuser, a guide to the LEED certification process and applying for LEED credits written by professionals in the field. After four years of development, aligning credit across all LEED rating systems and weighing credits based on environmental priority, USGBC launched LEED v3, which consists of a new continuous development process, a new version of LEED Online, a revised third-party certification program and a new suite of rating systems known as LEED 2009.
Under LEED 2009, there are 100 possible base points distributed across six credit categories: "Sustainable Sites", "Water Efficiency", "Energy and Atmosphere", "Materials and Resources", "Indoor Environmental Quality", "Innovation in Design". Up to 10 additional points may be earned: four additional points may be received for Regional Priority Credits, six additional points for Innovation in Design. Buildings can qualify for four levels of certification: Certified: 40–49 points Silver: 50-59 points Gold: 60-79 points Platinum: 80 points and above The LEED 2009 performance credit system aims to allocate points "based on the potential environmental impacts and human benefits of each credit." These are weighed using the environmental impact categories of the United States Environmental Protection Agency's Tools for the Reduction and Assessment of Chemical and Other Environmental Impacts. and the environmental-impact weighting
Park Jae-sang, known professionally as Psy, stylized PSY, is a South Korean singer, rapper and record producer. Psy is known domestically for his humorous videos and stage performances, internationally for his hit single "Gangnam Style"; the song's refrain was entered into The Yale Book of Quotations as one of the most famous quotations of 2012. On October 23, 2012, Psy met United Nations Secretary-General Ban Ki-moon at the UN Headquarters where Ban expressed his desire to work with the singer because of his "unlimited global reach". On December 21, 2012, his music video for "Gangnam Style" exceeded one billion views on YouTube, becoming the first video to do so in the website's history. Psy was subsequently recognized by the media as the "King of YouTube". On May 31, 2014, the video for Psy's Gangnam Style hit two billion views; as of December 2018, it is the sixth most viewed video with over 3.2 billion views. In December 2012, MTV noted Psy's rise from being little known outside South Korea, to being hailed as the "Viral Star of 2012".
On December 31, 2012, Psy performed in a globally televised New Year's Eve celebration with American rapper MC Hammer on-stage in front of a live audience of over a million people in Times Square, New York City. Park Jae-sang was born on December 31, 1977, to an affluent family in the Gangnam District of Seoul, South Korea, his father, Park Won-Ho, is the executive chairman of DI Corporation, a manufacturer of semiconductor manufacturing equipment listed on the Korea Exchange. His mother, Kim Young-hee, owns several restaurants in Gangnam. Park attended Middle Schools and Sehwa High School, he was known as the class clown. In an interview on South Korea's Seoul Broadcasting System, a former teacher of Park said: "I remember Psy making a lot of sexual jokes during class, he had such a big influence. I disliked him at the time, but looking back, I see that he added a great energy to the class."Park told CNN's Alina Cho that when he was 15 years old, he watched a Korean TV programme that introduced foreign pop music.
One particular episode showed a concert at Wembley Stadium held by the British rock band Queen where they performed their 1975 hit single "Bohemian Rhapsody". Park said; as part of preparations to take over DI Corporation from his father, Park had planned to study business administration at Boston University in 1996. However, upon his arrival in the United States, he lost interest in his studies, spending his remaining tuition funds on musical instruments and entertainment equipment, including a computer, an electric keyboard, a MIDI interface. After attending an English-language summer course and studying for one semester, Park dropped out of Boston University and applied to study at Berklee College of Music instead. During his time at Berklee, Park took core curriculum lessons in ear training, contemporary writing and music synthesis, but he soon dropped out and returned to South Korea to pursue a career as a singer, without having attained a degree from either Boston University or Berklee.
In South Korea, Psy made his first appearance on Korean national television in 2000 after his dancing caught the eye of a TV producer. In January 2001, Psy debuted his full-length album Psy from the Psycho World!, for which he was fined by South Korean government authorities due to his album's "inappropriate content". Psy was a rookie hip hop singer that stirred up the Korean pop music scene with blunt lyrics, peculiar dance moves and an unconventional appearance that earned him the nickname "The Bizarre Singer", his second album Sa 2 created controversy upon its release in 2002, earning complaints from civil groups due to the negative influence his album would have on children and teenagers. Since Psy has been thought of as a controversial artist, Sa 2 was banned in 2002 from being sold to the under-19 set. In September of the same year, Psy released his third album 3 Psy; the album's title song, "Champion", saw great success due to the hype from the World Cup games held in Seoul. Despite the significant amount of controversy surrounding his music, Psy was awarded songwriting accolades at the annual Seoul Music Awards, marking his breakthrough in the South Korean music industry.
In 2003, Psy was conscripted into the South Korean military as part of mandatory military service imposed on all South Korean men aged 18 to 35. Psy was excused from military duty due to working at a software development company, he was expected to be released from duties in 2005. In 2006, Psy released his fourth album Ssajib, which won honors at the 2006 SBS Music Awards and Hong Kong's Mnet Asian Music Awards. In 2007, state prosecutors accused Psy of "neglecting" his work, holding concerts and appearing on local television networks during his period of prior employment. On October 12, 2007, the Seoul Administrative Court decided that Psy must be redrafted, rejecting a lawsuit filed by Psy against the Military Manpower Administration in August. Two months Psy was re-drafted into the military where he had held the rank of Private First Class and served as a signalman in the 52nd Army Infantry Division, before being released from duties in July 2009. Owing to financial difficulties, Psy could no longer release his own songs.
His wife encouraged him to join the South Korean music label YG Entertainment, whose founder and chief executive officer Yang Hyun-suk was an old friend of Psy's. In 2010, Psy joined YG