ICT
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KAIST studnets win 2014 Creative Vitamin Project Competition
A team of KAIST students have won the grand prize for the “2014 Creative Vitamin Project Competition” held on May 28, 2014 in Seoul. The event was co-hosted by the Ministry of Science, ICT and Future Planning, National Information Society Agency, and Korea IT Convergence Technology Association. The Creative Vitamin Project is the Korean government’s initiative to grow the Korean economy and generate job creation by applying science and technology, information and communications technology in particular, to the existing industry and social issues.
The winners were Hyeong-Min Son, a student in the master’s program in the Department of Civil and Environmental Engineering, KAIST and Su-Yeon Yoo, a Ph.D. student from the Graduate School of Information Security, KAIST.
Son and Yoo proposed a sustainable crop protection system using directional speakers. This technique not only efficiently protects crops from harmful animals, but also effectively guides the animals outside the farmland.
Kwang-Soo Jang, the Director of the National Information Society Agency, said, “This competition provides an opportunity to develop public consensus and interest in the Creative Vitamin Project. We hope that through the participation of all citizens, the project can become an instrument to realizing the creative economy.”
2014.06.18 View 9680 -
An Exploratory Study on Smartphone Abuse among College Students
Professor Uichin Lee
Professor Uichin Lee of the Department of Knowledge Service Engineering, KAIST, and his research team developed a system that automatically diagnoses the levels of smartphone addiction based on an analysis of smartphone use records.
Professor Lee investigated the usage patterns of 95 smartphone users (college students) by conducting surveys and interviews and collecting logged data. The research team divided participants into “risk” and “non-risk” groups based on a self-reported rating scale to evaluate their abuse of smartphones. As a result, 36 students were categorized as “high risk” and 59 were categorized as “low risk.”
The researchers collected over 50,000 hours of smartphone use encompassing power levels, screen, battery status, application use, internet use, calling, and texting.
The results showed that the “high risk” group used only 1~2 applications, focusing on mobile messengers (Kakotalk, etc.) and SNS (Facebook, etc.).
In addition, a relationship was found between alarm function and addiction levels. Users who set alarms for Kakaotalk messages and SNS comments used smartphones for an additional 38 minutes per day on average.
Results also showed that “high risk” students were on their smartphones for 4 hours and 13 minutes per day, 46 minutes longer than “low risk” students who used smartphones for 3 hours and 27 minutes. The difference was prevalent during 6 am and noon, and 6pm and midnight. In addition, “high risk” students accessed their smartphones 11.4 times more than “low risk” students.
Based on the collected data, Professor Lee developed an automatic system that distinguished users into “high risk” or “low risk” categories with 80% accuracy. The new system is expected to give an early diagnosis of addiction to smartphone users, thereby allowing for early treatment and intervention before the user becomes addicted.
Professor Lee commented that, "the conventional addiction analysis based on self-analysis surveys did not provide real-time data and were largely inaccurate. The new system overcomes these limitations through data science and personal big data analysis" and that he is "developing an application that monitors smartphone abuse."
Figure 1. Usage amount: overall and application-specific results
Figure 2. Usage frequency: overall and application-specific results
Figure 3. Overall diurnal usage time and frequency
2014.06.05 View 7128 -
Clear Display Technology Under Sunlight Developed
The late Professor Seung-Man Yang
The last paper of the late Professor Seung-Man Yang, who was a past master of colloids and fluid mechanics
Practical patterning technology of the next generation optical materials, photonic crystals
The mineral opal does not possess any pigments, but it appears colorful to our eyes. This is because only a particular wavelength is reflected due to the regular nano-structure of its surface. The material that causes selective reflection of the light is called photonic crystals.
The deceased Professor Seung-Man Yang and his research team from KAIST’s Chemical and Biomolecular Engineering Department ha ve developed micro-pattern technology using photolithographic process. This can accelerate the commercialization of photonic crystals, which is hailed as the next generation optics material.
The research results were published in the April 16th edition of Advanced Materials, known as the most prestigious world-renowned journal in the field of materials science.
The newly developed photonic crystal micro-pattern could be used as a core material for the next generation reflective display that is clearly visible even under sunlight. Since it does not require a separate light source, a single charge is enough to last for several days.
Until now, many scientists have endeavored to make photonic crystals artificially, however, most were produced in a lump and therefore lacked efficiency. Also, the low mechanical stability of the formed structure prevented from commercialization.
In order to solve these problems, the research team has copied the nano-structure of opals.
Glass beads were arranged in the same nano-structure as the opal on top of the photoresist material undergoing photocuring by ultraviolet light. The glass beads were installed in the photoresist materials, and UV light was selectively exposed on micro regions. The remaining region was developed by photolithographic process to successfully produce photonic crystals in micro-patterns.
The co-author of the research, KAIST Chemical and Biomolecular Engineering Department’s Professor Sin-Hyeon Kim, said, “Combining the semiconductor process technology with photonic crystal pattern technology can secure the practical applications for photonic crystals.”He also predicted “This technology can be used as the key optical material that configures the next generation reflective color display device with very low power consumption.”
The late Professor Seung-Man Yang was a world-renowned expert in the field of colloids and fluid mechanics. Professor Yang published over 193 papers in international journals and continued his research until his passing in last September.
He received Du Pont Science and Technology Award in 2007, KAIST Person of the Year 2008, Gyeong-Am Academy Award in 2009, as well as the President’s Award of the Republic of Korea in March 2014. The researchers devoted the achievement of this year’s research to Professor Yang in his honor.
Research was conducted by KAIST Photonic-fluidic Integrated Devices Research Team, as a part of the Creative Research Program funded by the Ministry of Science, ICT and Future Planning, Republic of Korea.
Figure 1. Opal [left] and the nano glass bead arrangement structure within the opal [right]
Figure 2. Process chart of the photonic crystal micro-pattern formation based on photolithography
Figure 3. Opal structure [left] and inverted structure of the opal [right]
Figure 4. Photonic crystal micro-pattern in solid colors
Figure 5. Photonic crystal micro-pattern that reflects two different crystals (Red, Green) [left] and pixelated pattern of photonic crystal in three primary colors (Red, Green, Blue) [right] that is applicable to reflective displays
2014.05.14 View 11334 -
An Electron Cloud Distribution Observed by the Scanning Seebeck Microscope
All matters are made of small particles, namely atoms. An atom is composed of a heavy nucleus and cloud-like, extremely light electrons.
Korean researchers developed an electron microscopy technique that enables the accurate observation of an electron cloud distribution at room-temperature. The achievement is comparable to the invention of the quantum tunneling microscopy technique developed 33 years ago.
Professor Yong-Hyun Kim of the Graduate School of Nanoscience and Technology at KAIST and Dr. Ho-Gi Yeo of the Korea Research Institute of Standards and Science (KRISS) developed the Scanning Seebeck Microscope (SSM). The SSM renders clear images of atoms, as well as an electron cloud distribution. This was achieved by creating a voltage difference via a temperature gradient.
The development was introduced in the online edition of Physical Review Letters (April 2014), a prestigious journal published by the American Institute of Physics.
The SSM is expected to be economically competitive as it gives high resolution images at an atomic scale even for graphene and semiconductors, both at room temperature. In addition, if the SSM is applied to thermoelectric material research, it will contribute to the development of high-efficiency thermoelectric materials.
Through numerous hypotheses and experiments, scientists now believe that there exists an electron cloud surrounding a nucleus. IBM's Scanning Tunneling Microscope (STM) was the first to observe the electron cloud and has remained as the only technique to this day. The developers of IBM microscope, Dr. Gerd Binnig and Dr. Heinrich Rohrer, were awarded the 1986 Nobel Prize in Physics.
There still remains a downside to the STM technique, however: it required high precision and extreme low temperature and vibration. The application of voltage also affects the electron cloud, resulting in a distorted image.
The KAIST research team adopted a different approach by using the Seebeck effect which refers to the voltage generation due to a temperature gradient between two materials.
The team placed an observation sample (graphene) at room temperature (37~57℃) and detected its voltage generation. This technique made it possible to observe an electron cloud at room temperature.
Furthermore, the research team investigated the theoretical quantum mechanics behind the electron cloud using the observation gained through the Seebeck effect and also obtained by simulation capability to analyze the experimental results.
The research was a joint research project between KAIST Professor Yong-Hyun Kim and KRISS researcher Dr. Ho-Gi Yeo. Eui-Seop Lee, a Ph.D. candidate of KAIST, and KRISS researcher Dr. Sang-Hui Cho also participated. The Ministry of Science, ICT, and Future Planning, the Global Frontier Initiative, and the Disruptive Convergent Technology Development Initiative funded the project in Korea.
Picture 1: Schematic Diagram of the Scanning Seebeck Microscope (SSM)
Picture 2: Electron cloud distribution observed by SSM at room temperature
Picture 3: Professor Yong-Hyun Kim
2014.04.04 View 12939 -
Spillover Phenomenon Identified Using Model Catalyst System
Researchers at KAIST have identified spillover phenomenon, which has remained controversial since its discovery in the early 1960s.
KAIST Department of Chemical and Biomolecular Engineering’s Professor Min-Gi Choi and his team has explained the "spillover phenomenon," using their own model catalyst system where platinum is selectively located within the amorphous aluminosilicate.
The research results were published on the 25th February online edition of Nature Communications.
Spillover refers to a phenomenon that occurs when hydrogen atoms that have been activated on the surface of metals, such as platinum, move to the surface of the catalyst. It was predicted that this phenomenon can be used to design a catalyst with high activity and stability, and thus has been actively studied over the last 50 years.
However, many cases of the known catalysts involved competing reactions on the exposed metal surface, which made it impossible to directly identify the presence and formation mechanism of spillover.
The catalysts developed by the researchers at KAIST used platinum nanoparticles covered with aluminosilicate. This only allowed the hydrogen molecules to pass through and has effectively blocked the competing reactions, enabling the research team to study the spillover phenomenon.
Through various catalyst structure and reactivity analysis, as well as computer modeling, the team has discovered that Brönsted acid sites present on the aluminosilicate plays a crucial role in spillover phenomenon.
In addition, the spillover-based hydrogenation catalyst proposed by the research team showed very high hydrogenation and dehydrogenation activity. The ability of the catalyst to significantly inhibit unwanted hydrogenolysis reaction during the petrochemical processes also suggested a large industrial potential.
Professor Min-Gi Choi said, “This particular catalyst, which can trigger the reaction only by spillover phenomenon, can be properly designed to exceed the capacity of the conventional metal catalysts. The future goal is to make a catalyst with much higher activity and selectivity.”
The research was conducted through funds subsidized by SK Innovation and Ministry of Science, ICT and Future Planning.
The senior research fellow of SK Innovation Seung-Hun Oh said, “SK Innovation will continue to develop a new commercial catalyst based on the technology from this research.”
Juh-Wan Lim and Hye-Yeong Shin led the research as joint first authors under supervision of Professor Min-Gi Choi and computer modeling works were conducted by KAIST EEWS (environment, energy, water, and sustainability) graduate school’s Professor Hyeong-Jun Kim.
2014.03.03 View 9338 -
KAIST held its 2014 Commencement Ceremony
The KAIST Commencement Ceremony for 2014 was held on Friday, 21st February, at Sports Complex, KAIST.
On this day, a total of 2,619 students
received their degrees. This included 499 doctorates, 1,220 masters, and 900 students with bachelor’s degrees. Since its establishment in 1971,
KAIST has produced 9,881 Ph.D., 25,161 MA and 13,693 BA,
which amounts to 48,735 scientific and engineering personnel.
The former Minister for Science and Technology
of the Republic of Korea, Dr. KunMo Chung, received an honorary doctorate for his effort in establishing the Korea Advanced Institute of Science (KAIS) to foster talented scientists and engineers, thus contributing to the significant growth
of Korea that has led it to stand as a scientifically advanced nation today.
The student graduating with summa cum laude was Jang-Geun
Kim from the Department of Biological Sciences. Mr. Kim received the Minister of Science, ICT and
Future Planning Award.
Mr. Kim said, “I am honored to receive the
award from the minister. I hope a lot of talented students will go onto science and
engineering field, so that Korea can earn a place among the technologically
elite countries.” Jang-Geun Kim will continue his
study of genomic medicine at KAIST graduate school.
President Steve Kang spoke
to the graduates:
“The whole nation has given their wholehearted support to KAIST so that students can study in a good environment. Please have
great aspirations and hopes, and continue to
broaden your knowledge and solve the challenges that humanity is facing today,
so our country and the world can advance.”
2014.02.27 View 8485 -
Professor Suk-Bok Chang receives 14th Korea Science Award in the field of Chemistry
Professor Suk-Bok Chang from the Department of Chemistry at KAIST received the “2013 Korea Science Award” in chemistry hosted by the National Research Foundation and the Ministry of Science, ICT, and Future Planning, Republic of Korea.
The Korea Science Award is a presidential award of Korea, which was first established in 1987 to recognize research excellence in natural science. Three scientists are selected for the award in every other year.
Professor Chang primarily researches the catalyzing mechanism of carbon-hydrogen bonds in organic molecules. He has succeeded in making great progress in the field of organic chemistry especially in developing a new type of transition metal catalytic behavior that can be applied to low-reactivity compounds.
Hydrocarbons are abundant in nature, but its unreactive nature in ambient conditions makes it unsuitable as reactant for compound synthesis. In addition, the mechanism behind transition metal catalyzed carbon-hydrogen bond synthesis has not been proven sufficiently.
The prediction that fossil fuels will be depleted before the end of the century makes hydrocarbon synthesis an extremely important matter.
The need for an effective hydrocarbon synthesis method inspired Professor Chang to pursue research in the transition metal catalysis method and to develop a catalytic system that would allow efficient synthesis even in ambient conditions.
Professor Chang has been the lead researcher for the Institute for Basic Science’s “molecule catalysis reaction research team” since December 2012 and has been carrying out this research in KAIST.
2014.01.27 View 9542 -
Mechanism in regulation of cancer-related key enzyme, ATM, for DNA damage and repair revealed
Professor Kwang-Wook Choi
A research team led by Professor Kwang-Wook Choi and Dr. Seong-Tae Hong from the Department of Biological Sciences at KAIST has successfully investigated the operational mechanism of the protein Ataxia Telangiectasia Mutated (ATM), an essential protein to the function of a crucial key enzyme that repairs the damaged DNA which stores biometric information. The results were published on December 19th Nature Communications online edition.
All organisms, including humans, constantly strive to protect the information within their DNA from damages posed by a number of factors, such as carbonized materials in our daily food intake, radioactive materials such as radon emitting from the cement of buildings or ultraviolet of the sunlight, which could be a trigger for cancer.
In order to keep the DNA information safe, the organisms are always carrying out complex and sophisticated DNA repair work, which involves the crucial DNA damage repair protein ATM. Consequently, a faulty ATM leads to higher risks of cancer.
Until now, academia predicted that the Translationally Controlled Tumor Protein (TCTP) will play an important role in regulating the function of ATM. However, since most of main research regarding TCTP has only been conducted in cultured cells, it was unable to identify exactly what mechanisms TCTP employs to control ATM.
The KAIST research team identified that TCTP can combine with ATM or increase the enzymatic activity of ATM. In addition, Drosophilia, one of the most widely used model organisms for molecular genetics, has been used to identify that TCTP and ATM play a very important role in repairing the DNA damaged by radiation. This information has allowed the researchers to establish TCTP’s essential function in maintaining the DNA information in cell cultures and even in higher organisms, and to provide specific and important clues to the regulation of ATM by TCTP.
Professor Kwang-Wook Choi said, “Our research is a good example that basic research using Drosophilia can make important contributions to understanding the process of diseases, such as cancer, and to developing adequate treatment.”
The research has been funded by the Ministry of Science, ICT and Future Planning, Republic of Korea, and the National Research Foundation of Korea.
Figure 1. When the amount of TCTP protein is reduced, cells of the Drosophila's eye are abnormally deformed by radiation. Scale bars = 200mm
Figure 2. When the amount of TCTP protein is reduced, the chromosomes of Drosophilia are easily broken by radiation. Scale bars = 10 mm.
Figure 3. When gene expressions of TCTP and ATM are reduced, large defects occur in the normal development of the eye. (Left: normal Drosophilia's eye, right: development-deficient eye)
Figure 4. ATM marks the position of the broken DNA, with TCTP helping to facilitate this reaction. DNA (blue line) within the cell nucleus is coiled around the histone protein (green cylinder). When DNA is broken, ATM protein attaches a phosphate group (P). Multiple DNA repair protein recognizes the phosphate as a signal that requires repair and gathers at the site.
2014.01.07 View 11819 -
Opening Ceremony of Genetic Donguibogam held
- Medicine using traditional natural substances • Food product source technology development begins
- Over 150,000,000,000 Won for 10 years of work invested to develop source technology
- Opening ceremony held on November 26th at 3 p.m. in Bio & Brain Engineering Division Building
The research to develop medicine and food source technology using traditional natural substances hasbegun.The opening ceremony of the “Genetic Donguibogam” business group, with KAIST Department of Bio & Brain Engineering Professor Do Heon Lee as the leader, was held on November 26th at 3 p.m. in Dream Hall, Bio & Brain Engineering Division Building, KAIST, Daejeon. The attendees of the opening ceremony included Yo Eop Im, Head of the Future Technology Department of the Ministry of Science, ICT and Future Planning and around 200 experts in science and technology industry, including the National Research Foundation of Korea, KAIST, the Korea Institute of Science and Technology, Seoul National University and Yonsei University.
The business group was established to re-interpret traditional natural substances proved to be effective from experience and improve quality of life by researching its applications; and to develop integrated source technology using traditional natural substances. The group is to invest over 150,000,000,000 Won for 10 years of research to secure natural substance source technology in five stages: interpretation technology, analysis technology, verification technology, bio marker technology and human body effectiveness verification technology. Especially, the focus would be on the use of virtual body computer models and Omics* to analyse the effects of traditional natural substances mixture on human body, and to find new materials for healthcare.
This research model, it is hoped, will have a new item to pioneer in the world natural substance market as well as securing a technologically competitive edge in bio industry by developing source technology that investigates the effects of traditional natural substances using cutting edge science.
KAIST Department of Bio & Brain Engineering Professor and Head Do Heon Lee of the “Genetic Donguibogam” Business Group said, “We will push forward to develop source energy by integrating IT-BT technology with a computer virtual body to build a cooperation system with medicine and functional food industries.” He continued: “This will enable not only the creation of a new industry, but also customised medicine.”
The 12 partners of the group include KAIST, Korea Institute of Science and Technology, Seoul National University and Yonsei University and 200 experts. The research participation area will be widened to foreign research institutes and associated companies.
* Terminology
Noun) Omics is an academic discipline analysing mass information on metabolism of physiological phenomena in specific cells (transcriptome, proteome and protoplast) with an integrated approach to determine vital phenomena.
2013.12.11 View 8490 -
KAIST Hosted the 6th International Presidential Forum on Global Research Universities
More than 120 global leaders from higher education, private and public sectors, to discuss the promotion of economic growth through knowledge creation and entrepreneurship
The Korea Advanced Institute of Science and Technology (KAIST) held the 6th International Presidential Forum on Global Research Universities (IPFGRU) on October 15th at the Westin Chosun Hotel in Seoul, Republic of Korea.
About 64 presidents and vice presidents from 57 research universities in 28 nations attended for a presentation and panel discussion on the topic of “The Role and Responsibility of Research Universities: Knowledge Creation, Technology Transfer, and Entrepreneurship.”Annually held, the forum is organized to promote excellence and innovation in higher education and provide a place for discussion among prominent research university leaders and key policy-makers in the private and public sectors from across the world.Among the notable universities attending the 2013 forum were the University of California, Irvine, the École Polytechnique Fédérale de Lausanne, Technische Universität Berlin, Technion-Israel Institute of Technology, Tokyo Institute of Technology, Rice University, the University of Waterloo, and Massachusetts Institute of Technology (MIT). Government officials as well as representatives from business and industry such as Samsung Electronics, Korea Telecom, and Elsevier also joined the event.
The forum was proceeded with three separate sessions: Enabling Knowledge Creation, Entrepreneurship & University-Based Technology Transfer, and Higher Education & Strategic Knowledge Creation: Specialization & Performance, through which speakers and panelists examined how universities have played a role in knowledge creation and technology transfer, and ultimately how they have contributed to the development of national economies.
Keynote speakers were Michael Drake, chancellor of UC Irvine, and Jörg Steinbach, president of Technische Universität Berlin. Forum participants shared their experiences and insights in starting up knowledge- and technolgy-based new businesses.
Steve Kang, president of KAIST, talked about the purpose of the 2013 IPFGRU:
“In the face of an ever-changing economic climate driven by shifts in technological advancement, demographic trends, and global integration, the role of research universities is becoming ever more significant in achieving sustainable economic growth. This forum will help participants from around the world to define the choices ahead as universities seek the most productive and beneficial models for cooperation with industry, venture startups, and government.”For the 2013 IPFGRU, Ministry of Science, ICT, and Future Planning, ROK, Saudi Aramco, Samsung Heavy Industries, S-Oil, Elsevier, Thomson Reuters, and the Korea Economic Daily were forum sponsors.
2013.11.04 View 9490 -
Next-Generation Small Satellite System Design Review (SDR) is Held
The Satellite Technology Research Center (SaTReC) held a ‘Next-Generation Small Satellite System Design Review (SDR)’ on June 26th. During the review, experts evaluated the system, bus, payload, ground station and projectile to systematically supervise the development status of the next-generation small satellite.
The ‘Next-Generation Small Satellite’ project started on June 2012, and aims to improve small satellite technology and promote space science research. This project is sponsored by the Ministry of Science and Technology and its development is supervised by ICT & Future Planning and KAIST SaTReC.
2013.08.02 View 6797 -
Bioengineers develop a new strategy for accurate prediction of cellular metabolic fluxes
A team of pioneering South Korean scientists has developed a new strategy for accurately predicting cellular metabolic fluxes under various genotypic and environmental conditions. This groundbreaking research is published in the journal Proceedings of the National Academy of Sciences of the USA (PNAS) on August 2, 2010.
To understand cellular metabolism and predict its metabolic capability at systems-level, systems biological analysis by modeling and simulation of metabolic network plays an important role. The team from the Korea Advanced Institute of Science and Technology (KAIST), led by Distinguished Professor Sang Yup Lee, focused their research on the development of a new strategy for more accurate prediction of cellular metabolism.
“For strain improvement, biologists have made every effort to understand the global picture of biological systems and investigate the changes of all metabolic fluxes of the system under changing genotypic and environmental conditions,” said Lee. The accumulation of omics data, including genome, transcriptome, proteome, metabolome, and fluxome, provides an opportunity to understand the cellular physiology and metabolic characteristics at systems-level. With the availability of the fully annotated genome sequence, the genome-scale in silico (means “performed on computer or via computer simulation.”) metabolic models for a number of organisms have been successfully developed to improve our understanding on these biological systems. With these advances, the development of new simulation methods to analyze and integrate systematically large amounts of biological data and predict cellular metabolic capability for systems biological analysis is important.
Information used to reconstruct the genome-scale in silico cell is not yet complete, which can make the simulation results different from the physiological performances of the real cell. Thus, additional information and procedures, such as providing additional constraints (constraint: a term to exclude incorrect metabolic fluxes by restricting the solution space of in silico cell) to the model, are often incorporated to improve the accuracy of the in silico cell.
By employing information generated from the genome sequence and annotation, the KAIST team developed a new set of constraints, called Grouping Reaction (GR) constraints, to accurately predict metabolic fluxes. Based on the genomic information, functionally related reactions were organized into different groups. These groups were considered for the generation of GR constraints, as condition- and objective function- independent constraints. Since the method developed in this study does not require complex information but only the genome sequence and annotation, this strategy can be applied to any organism with a completely annotated genome sequence.
“As we become increasingly concerned with environmental problems and the limits of fossil resources, bio-based production of chemicals from renewable biomass has been receiving great attention. Systems biological analysis by modeling and simulation of biological systems, to understand cellular metabolism and identify the targets for the strain improvement, has provided a new paradigm for developing successful bioprocesses,” concluded Lee. This new strategy for predicting cellular metabolism is expected to contribute to more accurate determination of cellular metabolic characteristics, and consequently to the development of metabolic engineering strategies for the efficient production of important industrial products and identification of new drug targets in pathogens.”
2010.08.05 View 12333