transportation
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A senior couple donated their fortune to KAIST, hoping their contribution to be used for the development of science and technology in Korea.
A couple living in Kyunggi Province, Chun-Sik Cho (86) and Chang-Gi Yoon (82), donated to KAIST a 10 billion won worth of real estate. The couple thought about giving away their fortune since retirement and finally made up their mind after becoming to know about their neighbor’s good deeds.
The neighbor, Byung-Ho Kim, gave KAIST a 30 billion won worth of real estate last year. Influenced by Mr. Kim’s donation and their long-cherished wish to help others in need, the couple decided to transfer the ownership of their land to KAIST. They hoped that their contribution to be used for the development of science and technology in Korea.
The couple, who survived through the Korean civil war in the early 1950s, recalled their old days,
“We made through a harsh and difficult life right after the war. Everyone was poor and had nothing to wear or eat. We literally had to eat all sorts of grasses that were green on the ground. All of us had to work really hard to get out of despair resulted from the colonization of our nation by Japan and the subsequent civil war.”
Mr. Cho added, “The development of science and technology in our nation really propelled the overall advancement of our society and helped to make today’s success that is enjoyed by the current generation of our nation. It is our greatest hope that our contribution will add a small help in our nation’s efforts to further advance the development of science and technology. I would like KAIST to do just that with our donation.”
KAIST announced a plan to use their contribution for the establishment of a new graduate school specialized in green transportation and the development of related technology, called Green Transportation Graduate School. The university will name the new graduate school after the couple’s name in recognition of their goodwill.
The Green Transportation Graduate School will host academic programs and conduct researches related to the future transportation that is based on a renewable energy source and provides answers to the current energy problems faced by mankind. Multidisciplinary and convergent studies will be implemented through collaborations between academia, governments, and industries.
In the past four years, KAIST has witnessed a dramatic increase in the number and amount of donations received from all corners of Korean society and from around the world since President Nam Pyo Suh took the university’s top administrative office in 2006—1,004 in 2006; 2,158 in 2007; 3,091 in 2008; and 3,324 in 2009.
Major contributions since 2006
30 billion Won by Moon-Sul Chung in July 2001
10 million USD by Byiung-Joon Park in September 2007
2.5 million USD by Neil Pappalardo in November 2007
57.8 billion Won by Geun-Chul Ryu in August 2008
30 billion Won by Byung-Ho Kim in August 2009
2010.07.07 View 10959 -
KAIST introduced environmentally friendly public transportation to Seoul Grand Park.
KAIST introduced environmentally friendly public transportation to Seoul Grand Park.
First step toward the commercialization of Online Electric Vehicle (OLEV)
An online electric vehicle (OLEV) developed by KAIST replaced a trackless combustion-engine train running inside Seoul Grand Park in Gwacheon City, South Korea. On March 9, 2010, Seoul City and KAIST celebrated the completion of OLEV that picks up electricity from power cables buried underground through a non-contact magnetic charging method, called electromagnetic induction. Electromagnetic induction is the process of inducing electric current in a coil with the help of a magnet.
The pickup unit installed underneath OLEV collects electricity from a roadway and distributes the power either to operate the vehicle or for battery storage. Whether running or stopped, OLEV constantly receives electric power through the underground cables. As a result, OLEV mitigates the burden of equipping electric automobiles with heavy, bulky batteries—OLEV’s battery size is one-fifth that of the batteries installed in electric vehicles currently on the market.
There is no need to establish massive charging stations or to set aside much time for recharging. If the underground power lines installed on road curbs, bus stops, parking lots, and intersections, the power system could support a substantial portion of public transportation: For example, KAIST estimates that by establishing 20% of the road infrastructure for a bus route in Seoul City, the city could offer its citizens the online electric buses.
The non-contact charging of vehicles while running, idling, or parking is an important and practical technology necessary for the development of commercialized electric vehicles. This technology solves many of the issues related to the current batteries of electric vehicles, including size, expense, and repair/maintenance. In addition, non-contact charging is safer because it prevents potential electrical hazards, such as electric shock, that result from direct contact with power sources. Furthermore, it is more convenient to drive vehicles without overhead wires directly connected to power lines, as is necessary for streetcars and trams.
The recharging strips are divided into several meters of segments in length, and vehicles receive the power each time they pass over one. In other words, a sensor is affixed within each segment. When a car with the pickup equipment drives over the segment, the sensor is turned on for the car to receive electricity. This means that when a car without the pickup equipment passes over the segment, it will not collect any electricity.
The power supply via on/off switch (sensors) relieves safety concerns about electromagnetic field (EMF). Pedestrians or cars without the pickup unit will not be exposed to EMF because the sensor embedded in the segments will not work, thus no electricity generated. In addition, even under the circumstance of EMF yield, the test results for OLEV are well below the 1998 the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guideline, 62.5mG at 20khz. OLEV’s EMF test results range from 20mG (inside OLEV while running) to 50mG (around OLEV while parking).
When talking about a wireless energy transfer such as electromagnetic induction, the most critical issue is how to reserve an air gap of 12cm (in accordance with Korean law) between the surface of roads and the bottom of vehicles while having 60% power transmission efficiency or above. There was a similar research done in the US at University of Berkley—their research was considered unsuccessful because they obtained an air gap of 5-7cm with 60% maximum level of efficiency. Besides, their electromagnetic field (EMF) was quite high (2000A), and they were unable to bring down the high cost of installing power supply system. By contrast, for the first time in the world, KAIST has succeeded to obtain 12cm (and up to 17cm) of air gap with more than 70% efficiency level of power transmission. The EMF is also well below the international standard of 62.5mG. In a nutshell, KAIST has achieved a core technology in terms of capacity, efficiency, and EMF to develop electric vehicles for commercial use.
The city government of Seoul and KAIST signed a Memorandum of Understating (MOU) on the development of an online electric vehicle in August 2009. Against the backdrop of the public’s increased awareness of environmental pollution and the depletion of fossil fuels, the two organizations agreed to introduce eco-friendly vehicles to the city’s public transportation, beginning with the introduction of a trial version of OLEV to places like an amusement park, bus terminal, airport, shopping mall, and the like.
KAIST’s OLEV research team is made up of experts from a variety of fields, including electrical and electronics engineering, computer sciences, civil engineering, information technology, and mechanical engineering. OLEV’s success at Seoul Grand Park is a result of KAIST’s innovative initiatives on convergence research, and KAIST has submitted more than 120 applications for patents right in connection with the development of OLEV.
Online Electric Vehicle at Seoul Grand Park
In terms of power transmission efficiency, KAIST’s research team achieved a maximum pick-up capacity of 62kw/h, 74% with an air gap height of 13cm from a road to the bottom of a vehicle. Composed of one engine and three passenger cars, OLEV travels along a total length of 2.2km beltway. There are four sections of power supply infrastructure established on the route (Sections 1, 2, and 3: 122.5 meters long each, and Section 4: 5 meters long). The power supply cables were laid underground for a total of 372.5 meters, 16% of the total distance of the 2,200 meter route.
2010.03.12 View 12492 -
KAIST's Mobile Harbor Program Attracts Two Corporate Investments
KAIST-developed Mobile Harbor Program has attracted investments from Korea"s two big-name industrial corporations, university authorities said on Monday (Oct. 19).
KAIST has recently signed an agreement with Hyundai Wia Corp., a machine parts supplier, to collaborate in the researches of the mobile harbor programs and commercialization. Under the agreement, Hyundai WIA will invest a total of 7.5 billion won in the program for two years starting from January 2010.
KAIST has also received a letter of intent from the Daewoo Shipbuilding & Marine Engineering Co. on investing 20 billion won in the commercialization of the project.
The Mobile Harbor Program is designed to create mobile units that can go out to the ship which are anchored off-shore and unload the cargo and take it to where it is needed. It is aimed at overcoming the shortcomings of the current maritime container transportation systems. Container ships are getting larger and larger, requiring deep waters, large and complex loading and unloading systems, and major investments in facilities.
Prof. Byung-Man Kwak, leader of the program"s R&D team, said: "With the investment from two global industrial companies, the program has gained a crucial momentum. The development of the program is expected to help Korea to become a global leader in marine transportation and maintain its supremacy in shipbuilding."
2009.10.20 View 14309 -
Prof. Cho Identifies Dynamics of Signal Transportation System in Control of Cell Proliferation
KAIST, Jan. 22, 2009 -- A research team led by Prof. Kwang-Hyun Cho of the Department of Bio and Brain Engineering, KAIST, has identified a hidden mechanism of the dynamic behavior of signal transportation system involved in the control of cell proliferation, university authorities said.
The finding is expected to provide a clue to appropriately controlling the pathway of ERK protein which is known to play a significant role in causing and spreading cancer. The research was featured as the cover paper of the latest online edition of the Journal of Cell Science.
The Ras-Raf-MEK-ERK pathway (or ERK pathway) is an important signal transduction system involved in the control of cell proliferation, survival and differentiation. However, the dynamic regulation of the pathway by positive- and negative-feedback mechanism, in particular the functional role of Raf kinase inhibitor protein (RKIP) are still incompletely understood. RKIP is a physiological endogenous inhibitor of MEK phosphorylation by Raf kinases, but also participates in a positive-feedback loop in which ERK can inactivate RKIP.
"We attempted to unearth the hidden dynamics of these feedback mechanisms and to identify the functional role of RKIP through combined efforts of biochemical experiments and computer simulations based on an experimentally validated mechanical model," Prof. Cho was quoted as saying.
2009.02.03 View 11122 -
KAIST to build large-scale civil engineering experiment center
- Geo-Centrifuge experiment center of an area of about 1,712 square meters and an estimated construction cost of total 8.4 billion won
- Simulation laboratory in the field of geotechnical engineering with state-of-the-art experiment equipment- Ground-breaking ceremony held on April 3 at 4 pm
KAIST will construct ‘distributed shared-type Geo-Centrifuge experiment center’, a large-scale civil engineering laboratory that will study natural disasters such as earthquake, embankment collapse, etc. with ground structure miniatures.
A two-story building with a basement occupying an area of about 1,712 square meters will become a landmark laboratory in the field of geotechnical engineering that can be used for the education, research, and social infrastructure design by universities, institutes, and corporations via high-speed information and communication network. The estimated construction cost is 8.4 billion won.
The center will be composed of experiment building including geo-centrifuge laboratory, model-making room, workshop, geotechnical engineering laboratory, and specimen storehouse; and research building including control room, video conference room, electronic library, and research rooms. A variety of convenience facilities for researchers and video conference and remote monitoring system, with which researcher at remote distances can directly participate in experiments, will be provided in the research building, and world’s top-class experiment equipment such as geo-centrifuge with a turning radius of 5 meters, a maximum acceleration of 130 G (130 times faster than the acceleration of gravity), a preload of 2,400 kg and bidirectional shaking-table that can reproduce earthquakes-like wave during experiments, and robots that can reproduce construction procedures by a remote control will be installed.
Geo-Centrifuge experiment refers to an experiment that reproduces natural disaster-like motions by making miniatures of large-scale ground structures such as dams, slopes, etc. and using centrifugal forces generated from high-speed rotation. This experiment can easily and rapidly reproduce actual motions of ground structures at a low cost, thereby being widely used for various geotechnical engineering researches such as evaluation of seismic safety, movement of soft ground, slope stability analysis, etc. The causes of the embankment collapse in New Orleans by Hurricane Katrina in 2005 were also revealed by simulation tests by this experiment.
“The center will make possible a variety of experiments and researches that have never been available in Korea due to the lack of experiment infrastructure, therefore activate researches over the design and construction of large-scale social infrastructures. Making possible civil engineering researches demanding the use of large-scale equipment like Centrifuge, severely dependent on overseas technologies so far, will enhance the global competitiveness of Korean construction industry,” said Dong-soo Kim, President of the center.
The center will be constructed as part of the Ministry of Construction & Transportation (MOCT)’s project for the establishment of distributed shared-style construction research infrastructure, which is designed to establish construction research infrastructures in a national level. The ground breaking ceremony was held at KAIST on April 3 at 4 pm.
2007.04.12 View 14092