Tohoku University in the context of "Perpendicular recording"

Lu Xun (Chinese: 魯迅; pinyin: Lǔ Xùn, [lù ɕŷn]; 25 September 1881 – 19 October 1936), pen name of Zhou Shuren, born Zhou Zhangshou, was a Chinese writer. A leading figure of modern Chinese literature, he wrote in both vernacular and literary Chinese as a novelist, literary critic, essayist, poet, translator and political commentator, known for his satirical, acerbic tone and critical reflections on Chinese history and culture.

Lu was born into a declining family of landlords and scholar-officials in Shaoxing, Zhejiang. Although he initially aspired to take the imperial examinations, his family’s limited financial means compelled him to attend government-funded schools that offered a "Western-style education." After graduation, Lu pursued medical studies at Tohoku University in Japan but eventually dropped out, turning his attention to literature. Financial difficulties forced his return to China, where he taught at various secondary schools and colleges before taking a position at the Ministry of Education of the Republic of China.

Sendai (仙台市, Sendai-shi; [seꜜn.dai, sen.daꜜi.ɕi] ) is the capital city of Miyagi Prefecture and the largest city in the Tōhoku region. As of 1 August 2023, the city had a population of 1,098,335 in 539,698 households, making it the twelfth most populated city in Japan.

The modern city was founded in 1600 by the daimyō Date Masamune. It is nicknamed the City of Trees (杜の都, Mori no Miyako); there are Japanese zelkova trees lining many of the main thoroughfares such as Jōzenji Street (定禅寺通, Jōzenji dōri) and Aoba Street (青葉通, Aoba dōri).In the summer, the Sendai Tanabata Festival, the largest Tanabata festival in Japan, is held. In winter, the trees are decorated with thousands of lights for the Pageant of Starlight (光のページェント, Hikari no pējento), lasting through most of December. The city is also home to Tohoku University, one of the former Imperial Universities. On 11 March 2011, coastal areas of the city suffered catastrophic damage from a magnitude 9.0 offshore earthquake, which triggered a destructive tsunami.

A Yagi–Uda antenna, or simply Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; these elements are most often metal rods (or discs) acting as half-wave dipoles. Yagi–Uda antennas consist of a single driven element connected to a radio transmitter or receiver (or both) through a transmission line, and additional passive radiators with no electrical connection, usually including one so-called reflector and any number of directors. It was invented in 1926 by Shintaro Uda of Tohoku Imperial University, Japan, with a lesser role played by his boss Hidetsugu Yagi.

Reflector elements (usually only one is used) are slightly longer than the driven dipole and placed behind the driven element, opposite the direction of intended transmission. Directors, on the other hand, are a little shorter and placed in front of the driven element in the intended direction. These parasitic elements are typically off-tuned short-circuited dipole elements, that is, instead of a break at the feedpoint (like the driven element) a solid rod is used. They receive and reradiate the radio waves from the driven element but in a different phase determined by their exact lengths. Their effect is to modify the driven element's radiation pattern. The waves from the multiple elements superpose and interfere to enhance radiation in a single direction, increasing the antenna's gain in that direction.

Fujio Masuoka (舛岡 富士雄, Masuoka Fujio; born May 8, 1943) is a Japanese engineer, who has worked for Toshiba and Tohoku University, and is currently chief technical officer (CTO) of Unisantis Electronics. He is best known as the inventor of flash memory, including the development of both the NOR flash and NAND flash types in the 1980s. He also invented the first gate-all-around (GAA) MOSFET (GAAFET) transistor, an early non-planar 3D transistor, in 1988.