TE
-
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 13126 -
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 12725 -
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 16384 -
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 11809 -
KAIST Opens Cell Bench Research Center
KAIST opened a cell bench research center on the campus on Monday, Nov. 17, as a joint project with Samsung Electric Co. and Samsung Medical Center.
On hand at the opening ceremony were about 100 persons from the three organizations, including KAIST President Nam-Pyo Suh, Samsung Electric"s Chief Technology Officer (CTO) Byung-Cheon Koh and Samsung Medical Center Vice President Hyo-Geun Lim.
The newly-opened research center will be involved in the development of individually-tailored anti-cancer medicine using bio-inspired cell chips and technologies for clinical applications. Prof. Young-Ho Cho of the Department of Bio and Brain Engineering was named director of the research center.
"Top-notch professionals from the electronic industry, academia and the medical community have gathered together to establish this research center. We expect the center will open a new path for the science and technology community and the industry to combine their strengths and develop innovative anti-cancer therapeutics," said KAIST President Nam-Pyo Suh at the opening ceremony.
"The development of bio-cell chip technology represents a new challenge for the Samsung Electric which has focused on information technologies thus far. Through cooperation with KAIST and Samsung Medical Center, we expect to be able to develop a simple and efficient cure for cancer patients," commented Samsung Electric CTO Byung-Cheon Koh.
The research center will be initially concentrating on the development of cell chips for lung cancer, one of the primary causes of death for Koreans.
2008.11.17 View 14842 -
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 12984 -
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 15964 -
SoC Robot War 2008 Wraps Up 4-Day Competition
The 2008 Intelligent SoC Robot War hosted by KAIST wrapped up its four-day competition on Sunday, Oct. 19, at the Indian Hall of Convention & Exhibition Center (COEX) in southern Seoul.
At the annual contest featuring battles between mechanical robots utilizing System on Chip (SoC) technology, Seoul National University of Technology"s "Fiperion" won top award in the Tank Robot category and Chungbuk National University"s "What is FPGA?" was the champion in the Taekwon Robot category.
In the Tank Robot contest, robots in the form of tanks engaged in duels with laser beams through visual recognition, wireless communication, and audio recognition. On the other hand, the Taekwon Robot contest was a hand-to-hand fight. The robots had to be capable of recognizing the opponent, defending and attacking without external control.
A total of 20 teams in the Tank Robot category and 10 teams in the Taekwon Robot category passed through the preliminary assessments and vied in the final competition. The annual event started seven years ago.
The preliminary assessments conducted between July and September drew a total of 150 teams nationwide. Any team consisting of more than two people and under six undergraduate or graduate students are eligible to take part in the competition.
This year"s event was co-sponsored by Altera, a U.S.-based leading semiconductor manufacturer. Each of the two top-award winning teams received U.S.$1,000 in cash and 10 pieces of DE2 board which is worth $2,700.
2008.10.22 View 10760
-
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 14851 -
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 13906 -
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 12589 -
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 13276