Experimental Research for Performance and Noise of Small Axial Fan

Ito, Takahiro,Minorikawa, Gaku,Fan, Qinyin Korean Society for Fluid machinery 2009 International journal of fluid machinery and syste Vol.2 No.2

Small axial fans have become widely used as cooling devices in recent years. Because of their increasing importance, studies have been conducted on ways to improve the performance and reduce the noise of such fans. In this report, a small axial fan with a diameter of 85 mm (a type popularity used in personal computer or workstation) was selected for further examination. The influence on aerodynamic performance and noise of such frame design parameters as blade tip clearance results in a decrease of discrete frequency noise and an increase of broad-spectrum noise. As for the most suitable design refinement in terms of fan efficiency, we found that the treatment of outlet corner roundness and altering spoke skew to the direction counter to that of fan rotation was effective.

[2003년 춘계학술대회 특강] Rice Gruel in Chinese Food and Culture

Fan,Zhihong 동아시아식생활학회 2003 동아시아식생활학회지 Vol.13 No.3

Real-Time Repairable Interpolation Scheme for CNC Tool Path Processing

Wei Fan,Chen-Han Lee,Ji-Hong Chen 한국정밀공학회 2016 International Journal of Precision Engineering and Vol.17 No.12

G01 trajectory is widely-adopted for CNC machining. The piecewise linear trajectory is geometrically discontinuous, bringing about drastic fluctuation of feedrate and acceleration, and causing low machining efficiency and quality. Many methods of trajectory smoothing are developed and applied in CNC system. However some shortcomings exist when these methods were applied in CNC machining. In the existing methods, the following requirements are not satisfied simultaneously: not less than G2 continuity, confined chord error, shape preservation, interpolating G01 points, spatial applicability, real-time performance of algorithm, free geometric form. Considering various requirements of CNC machining, this work develops an interpolation scheme with local repairing function to deal with the possible shape deficiencies of trajectory. The resulting tool path has G2 continuity and is optimized in bending energy under shape-preserving and chord error constraints. Combining with jerk-limited feedrate scheduling, a real-time tool path processing strategy is developed. The simulation demonstrates the proposed method eliminates shape deficiencies, and has apparent advantage in the reduction of contour error, curvature, bending energy and machining time, compared with Zhao’s and Fan’s methods. The experiment demonstrates the advantages of the proposed algorithm in improving the quality of machined surface and machining efficiency, compared with previous methods.

효율적인 순서화 멀티캐스트 프로토콜에 관한 연구

박판우 大邱敎育大學校 1992 論文集 Vol.27 No.-

In this paper, we study on the communication of the process group in order to manage ditributed systems. We present new multicast protocols that provide efficient ordered multicasts to a single process group in the presence of failures. proposed protocols provide causal delivery ordering of messages. In our protocol, process may join and leave the group by communicating with membership changing service. Message delivery is alo ordered with respect to the observation of group membership changes, an property known as virtual synchrony. Our protocols are based on two logical timestamps, LT and VT timestamps.

중국의 한류 열풍과 혐한류 현상에 대한 담론 : 한중 언론의 한류 견해와 주장을 중심으로

김범송 한중인문학회 2008 한중인문학연구 Vol.25 No.-

In 1997, Chinese national broadcasting station translated a korean famous drama 'Sarangi mogile' into chinese and transmitted it over china. Since that, Hanrue began to be recognized to chines people. World cup match of Korea -Japan intensified the trend of Hanrue in national wide of Chinese continent. However, it maintained for a while lull and in 2005 through 'Daejangkum', its hot blast became to get interest from journalism of Korea and Japan again. Recently with the gist back cause so that protects the culture enterprises of the home country from Japan and Taiwan and the Chinese mainland, the cold current and the favoravle current of Hanrue coexist under government regulation and journalism on nagative attitude of Hanrue. There is a hot debate of Hanrue which will be over with the thing authorization wether the Hanrue will be continued consequently or it will be temporary just popularity. Even in worry of favor-Hanrue and anti-Hanrue, Hanrue, in regional from East Asia to North America and the Russia, its trend has been spreading, It is also becoming diversification with the drama, movie, music, game, food, cosmetics, and korean language. And there is the continuous possibility to have its popular influence worldwide as well. The Hanrue has diverse cultural contents of Korea as well as high competitivenessd. However, the korean and china scholars are different opinions of the hot blast of Hanrue in China. The Korean journalists discussion exaggerates the Hanrue that it has already set its position as main cultural trend in China, whereas the chinese journalists seemed to be negative attitude to Hanrue that the length which will go yet it is distant. This is aiming at analyzing the phenomena of Hanrue: its geneology, socially diverse trends and its problems and perspective. 1997년 중국의 국영방송 CCTV에서 한국의 인기드라마 『사랑이 뭐길래』를 중국어로 번역해 중국전역에 방송한 것을 계기로, 드라마를 선봉으로 하는 한류가 중국인들에게 인지되기 시작했다. 그 후 2002년 한일 월드컵을 계기로 한류 열풍이 중국대륙에서 일어났고, 한동안 소강상태를 유지하다가 2005년 드라마 『대장금』 열풍에 힘입어 다시 한중 언론의 각광을 받고 있다. 최근 들어 일본과 대만 및 중국본토에서 자국의 문화사업을 보호하는 취지하에, 언론의 한류 폄하와 정부 규제로 인한 혐한류 역풍 또한 만만치 않다. 따라서 한국 국내에서는 한류가 지속될 것인가, 일시적 유행으로 끝날 것인가에 대한 논란이 지속되고 있다. 이러한 혐한류의 우려에도 불구하고 한류가 지역적으로 동아시아에서 북미, 러시아 등으로 다변화되고 있고 콘텐츠에서는 드라마·영화·음악·게임·음식 ·화장품·한글 등으로 다양화되고 있어, 지속가능성이 높다는 견해가 주류적이다. 한마디로 한국의 대중문화 콘텐츠가 다양하고 높은 경쟁력을 갖고 있기 때문이다. 최근 중국의 한류 열풍에 대한 한중 언론과 학자들의 견해와 시각은 좀 구별되는 양상을 보인다. 한국 언론은 주관적으로 중국 내 한류 현상을 과장해 보도하며 한국학자들은 한류가 이미 사회적 트렌트로 자리 잡았다고 보는 경향이 큰 반면, 중국 언론은 객관적이고 소극적인 보도자세로 임하며 중국학자들은 한류가 트렌트로 확실히 자리 잡으려면 아직도 갈 길이 멀다고 주장한다. 본 연구는 (중국)한류 열풍의 초석을 다진 한국 드라마를 중심으로, 한류가 중국에서의 인기원인과 상존하는 문제점 및 혐한류의 발생 원인을 분석하고 한류 열풍의 지속화 방안을 제언하는데 취지를 둔다.

A Joint Control Strategy for Automobile Active Grille Shutter and Cooling Fan

Liu Chuanbo,Wang Zhengju,Fan Chaojie,Zhang Ruonan,Man Xingjia 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.6

As an emerging technology improving fuel consumption, active grille shutter (AGS) has been applied in engine cooling system. For the reason of unreasonable matching method of grille opening and cooling fan, the problem of engine overcooling is widespread. As components with similar function of adjusting cooling air flow, the AGS and the cooling fan are separated from each other in parameter matching and operation which reduce cooling efficiency and fuel economy. To achieve precise cooling and improve fuel economy, a joint control strategy for AGS and cooling fan was proposed by using computational fluid dynamics. In order to verify the feasibility of the strategy, the fuel economy tests were carried out at 0 km/h, 90 km/h and 120 km/h, respectively. The results showed that the fuel consumption under the three working conditions was reduced by 0.01 L/ 100 km, 0.07 L/ 100 km and 0.13 L/ 100 km, respectively, indicating that the proposed strategy can significantly reduce fuel consumption.

The Mediation Effect of Herd Behavior on the Impact of Trust on Purchase Intention: A Focus on Livestream E-commerce in China

Fan Zhou(Fan Zhou),Ki-Hyung Bae(Ki-Hyung Bae),De-Kui Li(De-Kui Li) 한국무역연구원 2023 무역연구 Vol.19 No.2

Problems and Challenges Facing the Promotion of Common Prosperity in China's Southwest Border Ethnic Minority Areas

Fan Gang(Gang Fan) 아시아사회과학학회 2022 Jornal of Asia Social Science Vol.9 No.2

China's Southwest border areas are home to many ethnic minority groups and have long struggled with poverty and underdevelopment. The promotion of common prosperity in these areas is a critical task for China's overall poverty alleviation strategy. However, there are significant challenges facing the promotion of common prosperity in these regions. Inadequate infrastructure is one of the major challenges facing the promotion of common prosperity in China's Southwest border areas. The region's transportation, electricity, and communication infrastructure are often underdeveloped, which can hinder the region's economic development and make it difficult for residents to access basic services. To address this challenge, the Chinese government has launched a number of infrastructure construction projects, such as the construction of highways and railways, to improve connectivity and promote economic development in the region. Low levels of education and vocational skills are also a significant challenge facing the promotion of common prosperity in China's Southwest border areas. Many residents in these regions lack access to quality education and vocational training opportunities, which can limit their economic opportunities and hinder the region's overall development. To address this challenge, the Chinese government has launched a number of education and vocational training programs to improve the skills and employability of residents in these areas. Limited economic opportunities are also a significant challenge facing the promotion of common prosperity in China's Southwest border areas. The region's economy is often dominated by traditional industries, such as agriculture and mining, which can limit the region's economic growth potential. To address this challenge, the Chinese government has launched a number of measures to promote the development of new and emerging industries, such as high-tech industries and cultural tourism. The promotion of common prosperity in China's Southwest border areas is a critical task for China's overall poverty alleviation strategy. However, there are significant challenges facing the promotion of common prosperity in these regions, including inadequate infrastructure, low levels of education and vocational skills, and limited economic opportunities. To address these challenges, the Chinese government has launched a number of measures and programs to improve infrastructure, education, and economic opportunities in these regions. By addressing these challenges, China can promote the common prosperity of ethnic minority areas and achieve its poverty alleviation goals.

The missing data of far-field pattern reconstructed by using Hilbert Transform

Fan Fan(범범),Wang Fanxiao(왕범효),Jinhwan Koh(고진환) 한국통신학회 2014 한국통신학회 학술대회논문집 Vol.2014 No.1

Exploring Prospects for Cross-Border Development in Southwest China's Border Regions

Fan Gang(Gang Fan) 아시아사회과학학회 2023 Jornal of Asia Social Science Vol.10 No.2

This paper explores the opportunities for along-border opening-up in Southwest China's border areas, analyzes the advantages and challenges of this region in opening up, and proposes measures and suggestions for further tapping its potential for opening up. The geographical advantage, economic advantage, and policy advantage of this region in opening up are discussed, as well as the challenges of geographical disadvantage, economic difficulties, and cultural differences. To further tap the potential of along-border opening-up in Southwest China's border areas, the paper suggests strengthening infrastructure construction, promoting industrial upgrading, and enhancing cultural exchange. The research findings offer insights into the development prospects and trends of along-border opening-up in this region.