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Prof. Kim's Team Wins Silver Prize at International Design Contest A KAIST team led by Prof. Myung-Suk Kim of the Department of Industrial Design won a silver prize (given by the Mayor of Osaka) at the 17th International Design Competition held at the Osaka International Convention Center on Nov. 27. The team, made up of KAIST students Da-Woon Chung (representative), Ji-Hoon Kim and Bo-Yeon Kim, presented a sonic energy absorbing (SONEA) system to transform noise energy into electrical energy. At the 2008 competition held under the main theme of "Earth-Life: Clean Aqua, Clean Air, Clean Energy," a Chinese team won the gold prize, Japanese and Korean groups shared silver prizes, and bronze prizes were given to U.S. and German contestants. It was noteworthy that the KAIST team was the only undergraduate contestants who won the prize. Ji-hoon Kim had already won a bronze prize last year at the same competition. The International Design Competition Osaka has been held annually or biannually, organized by the Japan Design Foundation, since 1983 and is considered as one of the most prestigious design competitions.
2008.12.09 View 14504
Two KAIST Professors Elected Fellows of APS Profs. Sung-Chul Shin and Chang-Hee Nam of the Department of Physics, KAIST, have recently been elected the 2009 fellows of the American Physical Society (APS), university officials said on Tuesday (Dec. 2). The APS fellowship is a prestigious recognition of the two professors" outstanding academic achievements in the field of physics, the officials said. The selection criteria are known to be extremely stringent and only a small fraction of APS members become fellows. Prof. Shin was cited for his pioneering contributions to the understanding of magnetization reversal dynamics, in particular critical scaling behavior of Barkhausen avalanches of 2D ferromagnets, and discovery of novel magnetic thin films and multilayers for high-density data storage. Prof. Nam was recognized for his contributions to the theory and experiments of physical processes of high harmonic generation for the development of attosecond coherent x-ray sources and related femtosecond laser technology. The American Physical Society, founded in 1899, is the world"s second largest organization of physicists, behind the Deutsche Physikalische Gesellschaft. It has 46,000 members across the world.
2008.12.04 View 13168
2008 IEEE International Conference on Humanoid Robots Opens The 2008 IEEE-RAS International Conference on Humanoid Robots, an international gathering to identify new research trends and technology in humanoid robotics, will open a three-day session on Monday (Dec. 1) at the Hotel Rivera and KAIST in Daejeon. The annual conference is organized by KAIST and the Robotics and Automation Society of the Institute for Electric and Electronic Engineers, a U.S.-based international non-profit, professional organization for the advancement of technology related to electricity. The conference is expected to draw a total of 200 robotics researchers from 19 different countries. Prof. Jun-Ho Oh, at the Department of Mechanical Engineering who led the creation of Korea"s first humanoid robot Hubo, is serving as general chair of the conference. Prof. Oh was named the host of the 2008 conference at the 2007 conference held at the Carnegie Melon University of the United States. The eight-year old conference was inaugurated in Boston in 2000. On the opening day of Dec. 1, seven lectures will be given on diverse areas of robotics including cognitive humanoid vision, and robot vision sensor and sensing. On the subsequent two days, a total of 110 papers will be presented. During the conference period, a variety of robots produced by six local and foreign robot makers will be on demonstration, providing opportunities for researchers and industrial robot makers to share technological ideas. Highlights of the conference will be special lectures by world-renowned robot researchers Prof. Yoshiyuki Sankai of University of Tsukuba, who has created an exoskeletal "robot suit," and Prof. Art Kuo of Univerity of Michigan who is regarded as a leading authority in dynamic walking. Following the conference, all participants are scheduled to tour Prof. Oh"s Hubo Lab and the Human-Robot Interaction Research Center, both located at KAIST.
2008.12.01 View 12773
KAIST Collaborating with U.S. Universities to Advance Humanoid Robotics Hubo, a life-size walking bipedal humanoid robot, is perhaps the best-known character in Korea that KAIST has ever produced. It was shown to the government heads of the Asia-Pacific region during the APEC held in Busan, Korea, in 2005 and appeared at the hit concerts of the pop singer Jang-Hoon Kim. The humanoid robot is soon likely to catch the fancy of Americans as a U.S. government-funded project seeks to create a Hubo that can work and interact with people in collaboration with Korean scientists. "We are going to give the brains to Hubo. (Japanese) Asimo can do only pre-programmed actions. We want to create a Hubo that can help people, interact with people," said Prof. Paul Oh of the Department of Mechanical Engineering & Mechanics at Drexel University in Philadelphia and leader of the five-year international project which was launched in November 2007. The U.S.$2.5 million project is funded through the Partnership for International Research and Education (PIRE) Program of the National Science Foundation (NSF) of the United States. It brings together world-renowned experts in humanoid design and information technologies. "Dr. Jun-Ho Oh"s lab at KAIST (that has created Hubo) is the world"s leader in humanoid design and the U.S. has advanced technologies in the areas such as artificial intelligence, mechanical learning and robot vision. Combining the strengths of the two countries can create a synergy effect and develop a more advanced humanoid robot," said Paul Oh. He is currently serving as Program Director of Robotics of the NSF which is overseeing robotics research (non-military) in the U.S. consisting over 150 robotics faculty. Paul Oh"s research team consists of experts from five U.S. universities -- Drexel, Bryn Mawr College, Colby College, the University of Pennsylvania and Virginia Tech -- and KAIST. Leading a delegation of six professors and eight students, Dr. Paul Oh made a two-day visit to KAIST on Nov. 18-19 to review the progress of the project and have a technical meeting with participants. "The U.S. universities participating in this program are scattered across the nation. So we decided to have a technical meeting here in Korea," he said. Asked the reason why he chose KAIST as a partner for the program, Dr. Oh said that KAIST is willing to open Hugo to international researchers, whereas in Japan only Honda engineers are allowed to touch Asimo, which is a humanoid robot created by Honda Motor Company. The project is to establish no barrier for roboticists anywhere in the world to pursue the humanoid research; a suite of humanoid platforms will be available for researchers to develop and advance capabilities like locomotion and human-robot interaction. The team has been initially involved in development of three tools, all of which are based on the Hubo platform, in order to kick-start humanoid research in the U.S. They are the Mini-Hubo (a small, light-weight and affordable humanoid purchasable at the price lower than $8,000), On-Line Hubo (a program to operate Hubo online) and Virtual Hubo (a simulation program to do researches in cyberspace). As the first outcome of the project, the Mini-Hubo is expected to be released in the U.S. around next April. Another important purpose of the PIRE program is to seek transformative models to train scientists and engineers to effectively work in global multi-disciplined design teams. To this end, an aggregate number of 20 students from U.S. universities are to stay at the KAIST during the next five years, with two students taking turns on a six-month term. "I was really amazed how much work is done with small funding here. This is really an excellent example to learn," said Roy Gross, an undergraduate from Drexel who has been staying at Prof. Oh"s Lab for the past three months.
2008.11.21 View 16438
Method to Synthesize New Lithium Ion Battery Cathode Material Identified A KAIST research team headed by Prof. Do-Kyung Kim at the Department of Materials Science and Engineering developed a technology to synthesize a new lithium ion battery spinel cathode which is regarded as a core part of hybrid and lithium battery cars. The research was conducted in collaboration with a research team of Prof. Yi Cui at Stanford University"s Department of Chemistry. Their findings were introduced in the November issue of Nano Letters, one of the leading academic journals in nano-science. The newly synthesized lithium ion battery spinel cathode known as spinel LiMn2O4 nanorods is attracting interests as an alternative cathode material since it is a low-cost, environmentally friendly substance for Li-ion battery cathodes. Its raw material is also highly available. Lithium ion batteries with high energy and power density are important for consumer electronic devices, portable power tools, and vehicle electrification. LixCoO2 is a commonly used cathode material in commercial lithium iron batteries. However, the high cost, toxicity, and limited abundance of cobalt have been recognized to be disadvantageous.
2008.11.20 View 11839
KAIST Research Team Unveils Method to Fabricate Photonic Janus Balls A research team led by Prof. Seung-Man Yang of the Department of Chemical and Biomolecular Engineering has found a method to fabricate photonic Janus balls with isotropic structural colors. The finding draws attention since the newly-fabricated photonic balls may prove useful pigments for the realization of e-paper or flexible electronic displays. The breakthrough was published in the Nov. 3 edition of the science journal "Advanced Materials." The Nov. 6 issue of "Nature" also featured it as one of the research highlights under the title of "Future Pixels." Prof. Yang"s research team found that tiny marbles, black on one side and colored on the other, can be made by "curing" suspensions of silica particles with an ultraviolet lamp. When an electric field is applied, the marbles line up so that the black sides all face upwards, which suggests they may prove useful pigments for flexible electronic displays. The researchers suspended a flow of carbon-black particles mixed with silica and a transparent or colored silica flow in a resin that polymerizes under ultraviolet light. They then passed the mixture through a tiny see-through tube. The light solidified the silica and resin as balls with differently colored regions, each about 200 micrometers in diameter. Over the last decades, the development of industrial platforms to artificially fabricate structural color pigments has been a pressing issue in the research areas of materials science and optics. Prof. Yang, who is also the director of the National Creative Research Initiative Center for Integrated Optofluidic Systems, has led the researches focused on fabrication of functional nano-materials through the process of assembling nano-building blocks into designed patterns. The "complementary hybridization of optical and fluidic devices for integrated optofluidic systems" research was supported by a grant from the Creative Research Initiative Program of the Ministry of Education, Science & Technology.
2008.11.12 View 13016
KAIST, Microsoft Research to Set up Research Collaboration Center KAIST, Korea"s premier institution for science and technology research and education, and Microsoft Research (MSR), the research arm of Microsoft Corp, signed a memorandum of understanding (MOU) to establish a joint research collaboration center in Korea on Oct. 20. The research collaboration center to be located at the KAIST campus in the Daedeok science and technology town 150 kilometers south of Seoul will be dedicated to promoting joint researches, curriculum innovation, talent fostering and academic exchange in the Asian region. The MOU signing ceremony at the Westin Chosun Hotel in Seoul was attended by President Nam-Pyo Suh and Vice President Soon-Heung Chang from KAIST, and Craig Mundie, Chief Research and Strategy Officer of Microsoft Corp, and Hsiao-Wuen Hon, Managing Director of MSR Asia from Microsoft. “We are excited to be working so closely with Microsoft Research,” KAIST President Suh said. “This is the first of many alliances we hope to establish with the world’s industrial leaders that will enable us to resolve some of the toughest problems in computer science and accelerate the next generation of innovation in computing technology and its application in other scientific researches.” Dr. Hon said: “For over 10 years, Microsoft Research has been committed to working with leading universities throughout Asia to spur computer science research and to strengthen Asia’s knowledge economies by helping foster their capabilities. The Microsoft-KAIST Research Collaboration Center demonstrates our continued efforts to strengthen relations with universities in Korea and build new partnerships with academia here.” In the last three years, Microsoft Research and KAIST have engaged in close collaboration through research projects, student support programs, and various academic exchange activities. One of the major projects was to construct software development library specifically dedicated to systems biology. A number of excellent students from KAIST participated in the internship program at Microsoft Research in Beijing, China and Redmond, United States. The establishment of the Microsoft-KAIST research collaboration center will bring the collaborative relations between KAIST and MSR to a new level. The center will provide a platform which unites the innovative minds of KAIST and Microsoft Research to develop technologies that will impact the way people live, learn, work, and play, a KAIST spokesman said.
2008.10.30 View 15998
KAIST, KRIBB Agree to Cooperate in Research of Convergence Technologies Oct. 15, 2008 -- KAIST and Korea Research Institute of Bioscience and Biotechnology (KRIBB) have agreed to cooperate in the research of convergence fields of biotechnology, information technology and nanotechnology. To this end, the two institutions concluded a memorandum of understanding to create a new academia-institute cooperative model in the convergence fields on Oct. 15 in Seoul, with KAIST President Nam-Pyo Suh, KRIBB Director Young-Hoon Park and Vice Minister of Education, Science and Technology Jong-Koo Park in attendance. Under the agreement, the two institutions will set up the tentatively-named KAIST-KRIBB BINT Convergence Institute for the development of technologies and nurturing skilled manpower in the convergence fields. The partnership of the two institutions is expected to bring broad-based cooperation opportunities and create a massive synergy effect by combining their resources and infrastructure for the development of convergence technologies, KAIST officials said.. The proposed institute is also designed to build a world-class research hub in systems biotechnology by combining strengths of the two institutions with initiatives to achieve the Korean government"s new vision for "low carbon, green growth." The institute will also serve as a base for domestic brain convergence by concentrating the nation"s research capacities in genetics and brain technology. KAIST also signed a memorandum of understanding for cooperation in researches in Oriental medicine with three institutions, KRIBB, Daegu Hanny University and Korea Institute of Oriental Medicine. The agreement calls for the four institutions to conduct joint researches in traditional sciences and Oriental medicine based on systems biology, develop manpower in related fields and share academic and research information. The agreement is expected to provide impetus to reinforcing competitiveness in compound and convergence technologies and discover new properties in Oriental medicine, according to KAIST authorities.
2008.10.16 View 14899
KAIST Ranks 95th among World Universities Oct. 13, 2008 --KAIST is ranked 95th among Top 200 Universities of the World this year, scoring a notable increase from last year"s ranking of 132nd. KAIST, Seoul National University which was placed 50th, and POSTECH ranked 188th became the only three institutions of higher education in Korea to make it to the list, called "The Times Higher Education -- QS World University Rankings." KAIST"s advancement was more conspicuous in specific area evaluations. In the area of Engineering and Information Technology, it is ranked 34th (49th last year), in Natural Sciences 46th (86th last year), and in Biological Sciences and Biotechnology 134th (166th last year). While North America dominates the ranking with 42 universities on the list, Europe and Asia Pacific are also well represented with 36 and 22 institutions, respectively. The list, compiled by The Times (of London) newspaper annually, is topped by Harvard University (USA), followed by Yale University (USA) and University of Cambridge (United Kingdom). Last year, only KAIST and SNU were included in the top 200 list. This year, Yonsei University raised its ranking to 203rd from last year"s 223rd while Korea University improved from 243rd to 236th, showing overall improvement of universities in Korea. Again this year, Japan and China had most of the top ranked universities in Asia, each sharing three in the top 50. University of Tokyo, ranked 19th, led all Japanese universities; Kyoto University was placed 25th and Osaka University 44th. University of Hong Kong was listed 26th, followed by Hong Kong University of Science and Technology on 39th and the Chinese University of Hong Kong on 42nd. The Times Higher Education--QS World University Rankings evaluates four main categories: quality of research, globalization, and quality of education and work of graduates in society. The evaluation also considers academic peer review, citations per faculty, recruiter review, international faculty, international students and faculty-student ratio. QS Top 100 Universities 2008 Source: QS Quacquarelli Symonds (www.topuniversities.com) Copyright?004-2008QSQuacquarelliSymondsLtd. 1 HARVARD University United States 2 YALE University United States 3 University of CAMBRIDGE United Kingdom 4 University of OXFORD United Kingdom 5 CALIFORNIA Institute of Technology (Calt... United States 6 IMPERIAL College London United Kingdom 7 UCL (University College London) United Kingdom 8 University of CHICAGO United States 9 MASSACHUSETTS Institute of Technology (M... United States 10 COLUMBIA University United States 11 University of PENNSYLVANIA United States 12 PRINCETON University United States 13= DUKE University United States 13= JOHNS HOPKINS University United States 15 CORNELL University United States 16 AUSTRALIAN National University Australia 17 STANFORD University United States 18 University of MICHIGAN United States 19 University of TOKYO Japan 20 MCGILL University Canada 21 CARNEGIE MELLON University United States 22 KING"S College London United Kingdom 23 University of EDINBURGH United Kingdom 24 ETH Zurich (Swiss Federal Institute of T... Switzerland 25 KYOTO University Japan 26 University of HONG KONG Hong Kong 27 BROWN University United States 28 ?ole Normale Sup?ieure, PARIS France 29 University of MANCHESTER United Kingdom 30= National University of SINGAPORE(NUS) Singapore 30= University of CALIFORNIA, Los Angeles (U... United States 32 University of BRISTOL United Kingdom 33 NORTHWESTERN University United States 34= ?OLE POLYTECHNIQUE France 34= University of BRITISH COLUMBIA Canada 36 University of California, BERKELEY United States 37 The University of SYDNEY Australia 38 The University of MELBOURNE Australia 39 HONG KONG University of Science & Techno... Hong Kong 40 NEW YORK University (NYU) United States 41 University of TORONTO Canada 42 The CHINESE University of Hong Kong Hong Kong 43 University of QUEENSLAND Australia 44 OSAKA University Japan 45 University of NEW SOUTH WALES Australia 46 BOSTON University United States 47 MONASH University Australia 48 University of COPENHAGEN Denmark 49 TRINITY College Dublin Ireland 50= Ecole Polytechnique F??ale de LAUSANNE... Switzerland 50= PEKING University China 50= SEOUL National University Korea, South 53 University of AMSTERDAM Netherlands 54 DARTMOUTH College United States 55 University of WISCONSIN-Madison United States 56 TSINGHUA University China 57 HEIDELBERG Universit? Germany 58 University of CALIFORNIA, San Diego United States 59 University of WASHINGTON United States 60 WASHINGTON University in St. Louis United States 61 TOKYO Institute of Technology Japan 62 EMORY University United States 63 UPPSALA University Sweden 64 LEIDEN University Netherlands 65 The University of AUCKLAND New Zealand 66 LONDON School of Economics and Political... United Kingdom 67 UTRECHT University Netherlands 68 University of GENEVA Switzerland 69 University of WARWICK United Kingdom 70 University of TEXAS at Austin United States 71 University of ILLINOIS United States 72 Katholieke Universiteit LEUVEN Belgium 73 University of GLASGOW United Kingdom 74 University of ALBERTA Canada 75 University of BIRMINGHAM United Kingdom 76 University of SHEFFIELD United Kingdom 77 NANYANG Technological University Singapore 78= DELFT University of Technology Netherlands 78= RICE University United States 78= Technische Universit? M?CHEN Germany 81= University of AARHUS Denmark 81= University of YORK United Kingdom 83= GEORGIA Institute of Technology United States 83= The University of WESTERN AUSTRALIA Australia 83= University of ST ANDREWS United Kingdom 86 University of NOTTINGHAM United Kingdom 87 University of MINNESOTA United States 88 LUND University Sweden 89 University of CALIFORNIA, Davis United States 90 CASE WESTERN RESERVE University United States 91= Universit?de Montr?l Canada 91= University of HELSINKI Finland 93= Hebrew University of JERUSALEM Israel 93= Ludwig-Maximilians-Universit? M?chen Germany 95 KAIST - Korea Advanced Institute of Scie... Korea, South 96 University of VIRGINIA United States 97 University of PITTSBURGH United States 98 University of CALIFORNIA, Santa Barbara United States 99= PURDUE University United States 99= University of SOUTHAMPTON United Kingdom
2008.10.14 View 15930
KAIST Team Identifies Nano-scale Origin of Toughness in Rare Earth-added Silicon Carbide A research team led by Prof. Do-Kyung Kim of the Department of Materials Science and Engineering of KAIST has identified the nano-scale origin of the toughness in rare-earth doped silicon carbide (RE-SiC), university sources said on Monday (Oct. 6). The research was conducted jointly with a U.S. team headed by Prof. R. O. Ritchie of the Department of Materials Science and Engineering, University of California, Berkeley. The findings were carried in the online edition of Nano Letters published by the American Chemical Association. Silicon carbide, a ceramic material known to be one of the hardest substances, are potential candidate materials for many ultrahigh-temperature structural applications. For example, if SiC, instead of metallic alloys, is used in gas-turbine engines for power generation and aerospace applications, operating temperatures of many hundred degrees higher can be obtained with a consequent dramatic increase in thermodynamic efficiency and reduced fuel consumption. However, the use of such ceramic materials has so far been severely limited since the origin of the toughness in RE-SiC remained unknown thus far. In order to investigate the origin of the toughness in RE-SiC, the researchers attempted to examine the mechanistic nature of the cracking events, which they found to occur precisely along the interface between SiC grains and the nano-scale grain-boundary phase, by using ultrahigh-resolution transmission electron microscopy and atomic-scale spectroscopy. The research found that for optimal toughness, the relative elastic modulus across the grain-boundary phase and the interfacial fracture toughness are the most critical material parameters; both can be altered with appropriate choice of rare-earth elements. In addition to identifying the nano-scale origin of the toughness in RE-SiC, the findings also contributed to precisely predicting how the use of various rare-earth elements lead to difference in toughness. University sources said that the findings will significantly advance the date when RE-SiC will replace metallic alloys in gas-turbine engines for power generation and aerospace applications.
2008.10.08 View 13942
KAIST Professor Exposes Structural Dynamics of Protein in Solution -- Dr. Hyot-Cherl Ihee"s 3-Year Research Is Valuable in Pharmaceutical Application Prof. Hyot-Cherl Ihee and his team at the Department of Chemistry, KAIST, has successfully unveiled the structural dynamics of protein in solution as a result of more than three years" research work. Nature Methods, a sister publication of the authoritative science magazine Nature, published the treatise, titled "Tracking the structural dynamics of proteins in solution using time-resolved wide-angle X-ray scattering" in its Sept. 22 online edition. The research paper will be carried in the magazine"s printed version in its October edition, according to Dr. Lee who is its correspondence author. In May 2005, Prof. Ihee successfully photographed the structural dynamics of protein in solid state and his findings were published in the Proceedings of National Academy of Science of the United States. As protein normally exists in human body in solution, not in solid state, he directed his research to developing the technology to capture protein"s dynamics in resolved state. In July that year, Prof. Ihee succeeded in measuring the structural changes of simple organic molecules in real time. He further developed the technology to uncover the structural dynamics of hemoglobin, myoglobin and cytochrome C. Prof. Ihee"s research, helped with the Education-Science-Technology Ministry"s Creative Research Promotion Fund, can be applied to new pharmaceutical development projects as well as nanotechnology development, according to KAIST officials. Prof. Ihee who earned his doctorate at California Institute of Technology in 1994 began teaching at KAIST in 2003. He won the Young Scientist Award given by the Korean government in 2006.
2008.09.22 View 12621
KAIST Professor Finds Paradox in Human Behaviors on Road -Strange as it might seem, closing roads can cut delays A new route opened to ease traffic jam, but commuting time has not been reduced.Conversely, motorists reached their destinations in shorter times after a big street was closed. These paradoxical phenomena are the result of human selfishness, according to recent findings of a research team led by a KAIST physics professor. Prof. Ha-Woong Jeong, 40, at the Department of Physics, conducted a joint research with a team from Santa Fe Institute of the U.S. to analyze the behaviors of drivers in Boston, New York and London. Their study found that when individual drivers, fed with traffic information via various kinds of media, try to choose the quickest route, it can cause delays for others and even worsen congestion. Prof. Jeong and his group"s study will be published in the Sept. 18 edition of the authoritative Physical Review Letters. The London-based Economist magazine introduced Prof. Jeong"s finding in its latest edition. Prof. Jeong, a pioneer in the study of "complex system," has published more than 70 research papers in the world"s leading science journals, including Nature, PNAS and Physical Review Letters. "Initially, my study was to reduce annoyance from traffic jam during rush hours," Prof. Jeong said. "Ultimately, it is purposed to eliminate inefficiency located in various corners of social activities, with the help of the network science." The Economist article read (in part): "...when individual drivers each try to choose the quickest route it can cause delays for others and even increase hold-ups in the entire road network. "The physicists give a simplified example of how this can happen: trying to reach a destination either by using a short but narrow bridge or a longer but wide motorway. In their hypothetical case, the combined travel time of all the drivers is minimized if half use the bridge and half the motorway. But that is not what happens. Some drivers will switch to the bridge to shorten their commute, but as the traffic builds up there the motorway starts to look like a better bet, so some switch back. Eventually the traffic flow on the two routes settles into what game theory calls a Nash equilibrium, named after John Nash, the mathematician who described it. This is the point where no individual driver could arrive any faster by switching routes. "The researchers looked at how this equilibrium could arise if travelling across Boston from Harvard Square to Boston Common. They analysed 246 different links in the road network that could be used for the journey and calculated traffic flows at different volumes to produce what they call a “price of anarchy” (POA). This is the ratio of the total cost of the Nash equilibrium to the total cost of an optimal traffic flow directed by an omniscient traffic controller. In Boston they found that at high traffic levels drivers face a POA which results in journey times 30% longer than if motorists were co-ordinated into an optimal traffic flow. Much the same thing was found in London (a POA of up to 24% for journeys between Borough and Farringdon Underground stations) and New York (a POA of up to 28% from Washington Market Park to Queens Midtown Tunnel). "Modifying the road network could reduce delays. And contrary to popular belief, a simple way to do that might be to close certain roads. This is known as Braess’s paradox, after another mathematician, Dietrich Braess, who found that adding extra capacity to a network can sometimes reduce its overall efficiency. "In Boston the group looked to see if the paradox could be created by closing any of the 246 links. In 240 cases their analysis showed that a closure increased traffic problems. But closing any one of the remaining six streets reduced the POA of the new Nash equilibrium. Much the same thing was found in London and New York. More work needs to be done to understand these effects, say the researchers. But even so, planners should note that there is now evidence that even a well intentioned new road may make traffic jams worse."
2008.09.18 View 13312

KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea T.042-350-2114 F.042-350-2210(2220)