Korea University is a private research university located in Seoul, South Korea. It was established in 1905, making it one of the oldest institutions of higher education in South Korea.The student body consists of over 20,000 undergraduate students and over 10,000 graduate students. The university’s academic breadth is extensive with its 81 departments in 19 colleges and divisions, and 18 graduate schools and it has over 1,500 full-time faculty members with over 95% of them holding Ph.D. or equivalent qualification in their field. The Korea University Alumni Association consists of more than 280,000 university graduates.Korea University is a research institution consisting of sixteen undergraduate colleges and twenty graduate divisions.The university is notable in South Korean history for being the first educational institution to offer academic programs in various disciplines, such as law, economics, and journalism. Korea University is particularly well known for its College of Law, which is widely considered to be one of the most prestigious undergraduate law programs in South Korea. Korea University also has auxiliary educational facilities such as the Institute of Foreign Language Studies, the Institute for Continuing Education, the Institute of International Education, and the Center for Teaching and Learning. There are 115 research institutes, including the Battelle@KU Laboratory, the Ilmin International Relations Institute, and the Center for Information Security Technologies. Wikipedia.
Quang D.T.,Hue University |
Kim J.S.,Korea University
Chemical Reviews | Year: 2010
Several researchers conducted studies to demonstrate the use of fluoro- and chromogenic chemodosimeters for heavy metal ion detection in solution and biospecimens. They demonstrated that fluorescent chemodosimeters had emerged as as a research area of significant importance due to their potential in detecting heavy metal ions in solution and biospecimens. Chemodosimeters were used to detect an analyte through a highly selective and irreversible chemical reaction between the dosimeter molecule and the target analyte. This led to an observable signal that had an accumulative effect and was directly related to the concentration of the analyte. The chemodosimeter also provided signaling changes in absorption wavelength and color that were widely used as detection events, as they required only the use of cost-effective equipment or no equipment in some cases.
Samsung and Korea University | Date: 2016-07-21
The present disclosure relates to a pre-5^(th)-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4^(th)-Generation (4G) communication system such as Long Term Evolution (LTE), a method for operating of an AP includes receiving a signal from at least one adjacent AP, generating information regarding each of channels based on the received signal, generating respective expected values by considering at least one channel to be involved in channel bonding, based on the information regarding each of the channels, and selecting a channel based on the respective expected values. An apparatus includes a controller configured to generate respective expected values for each of the channels and select a channel based on the respective expected values.
Hwang S.-W.,Korea University
Nature Materials | Year: 2016
Bioresorbable silicon electronics technology offers unprecedented opportunities to deploy advanced implantable monitoring systems that eliminate risks, cost and discomfort associated with surgical extraction. Applications include postoperative monitoring and transient physiologic recording after percutaneous or minimally invasive placement of vascular, cardiac, orthopaedic, neural or other devices. We present an embodiment of these materials in both passive and actively addressed arrays of bioresorbable silicon electrodes with multiplexing capabilities, which record in vivo electrophysiological signals from the cortical surface and the subgaleal space. The devices detect normal physiologic and epileptiform activity, both in acute and chronic recordings. Comparative studies show sensor performance comparable to standard clinical systems and reduced tissue reactivity relative to conventional clinical electrocorticography (ECoG) electrodes. This technology offers general applicability in neural interfaces, with additional potential utility in treatment of disorders where transient monitoring and modulation of physiologic function, implant integrity and tissue recovery or regeneration are required. © 2016 Nature Publishing Group
Kim H.J.,Korea University
Nanoscale | Year: 2013
Ultraselective and sensitive detection of xylene and toluene with minimum interferences of other indoor air pollutants such as benzene, ethanol, and formaldehyde is achieved using NiO hierarchical nanostructures doped with Cr. Pure and 1.15-2.56 at% Cr-doped NiO flower-like hierarchical nanostructures assembled from nanosheets are prepared by a simple solvothermal reaction and their gas sensing characteristics toward o-xylene and toluene gases are investigated. The 1.15 at% Cr-doped NiO hierarchical nanostructures show high responses to 5 ppm of o-xylene and toluene (ratio of resistance to gas and air = 11.61 and 7.81, respectively) and negligible cross-responses to 5 ppm of benzene, formaldehyde, ethanol, hydrogen, and carbon monoxide. However, pure NiO nanostructures show low responses to 5 ppm of o-xylene and toluene (ratio of resistance to gas and air = 2.01 and 1.14, respectively) and no selectivity toward any specific gas is observed. Significant enhancement of the response and selectivity to o-xylene and toluene is attributed to the decrease in the hole concentration in NiO and the catalytic oxidation of methyl groups by Cr doping.
Bunzli J.-C.G.,Ecole Polytechnique Federale de Lausanne |
Bunzli J.-C.G.,Korea University
Chemical Reviews | Year: 2010
The problematic issues of lanthanide luminescent bioprobes (LLB) from the standpoint of their photophysical and biochemical properties are studied. Quenching of the lanthanide luminescence by high-energy vibrational overtones is a major concern in the design of luminescent probes. On the other hand, it allows one to assess the number of water molecules q interacting in the inner coordination sphere from lifetimes measured in water and deuterated water. Several phenomenological equations have been proposed, based on the assumptions that O-D oscillators contribute little to deactivation and that all the other deactivation paths are the same in water and in deuterated water. Efficient lanthanide luminescent bioprobes must meet several stringent requirements, chemical, photophysical, and biochemical. A growing number of bioanalyses require specific targeting of the analyte, and therefore the lanthanide luminescent probes have to be fitted with adequate functionalities able to couple with biological material.
Baik J.-H.,Korea University
Frontiers in Neural Circuits | Year: 2013
Dopamine (DA) regulates emotional and motivational behavior through the mesolimbic dopaminergic pathway. Changes in DA mesolimbic neurotransmission have been found to modify behavioral responses to various environmental stimuli associated with reward behaviors. Psychostimulants, drugs of abuse, and natural reward such as food can cause substantial synaptic modifications to the mesolimbic DA system. Recent studies using optogenetics and DREADDs, together with neuron-specific or circuit-specific genetic manipulations have improved our understanding of DA signaling in the reward circuit, and provided a means to identify the neural substrates of complex behaviors such as drug addiction and eating disorders. This review focuses on the role of the DA system in drug addiction and food motivation, with an overview of the role of D1 and D2 receptors in the control of reward-associated behaviors. © 2013 Baik.
Kim J.,Korea University
Communications in Computational Physics | Year: 2012
In this paper, we review the recent development of phase-field models and their numerical methods for multi-component fluid flows with interfacial phenomena. The models consist of a Navier-Stokes system coupled with a multi-component Cahn-Hilliard system through a phase-field dependent surface tension force, variable density and viscosity, and the advection term. The classical infinitely thin boundary of separation between two immiscible fluids is replaced by a transition region of a small but finite width, across which the composition of the mixture changes continuously. A constant level set of the phase-field is used to capture the interface between two immiscible fluids. Phase-field methods are capable of computing topological changes such as splitting andmerging, and thus have been applied successfully to multi-component fluid flows involving large interface deformations. Practical applications are provided to illustrate the usefulness of using a phase-field method. Computational results of various experiments show the accuracy and effectiveness of phase-field models. © 2012 Global-Science Press.
Korea University | Date: 2016-06-28
A peptide for synthesizing silica and use thereof are provided. The peptide for synthesizing silica can polymerize silica from a silica precursor in an aqueous solution having conditions of normal temperature, normal pressure and near-neutral weak base. The peptide for synthesizing silica can form a self-assembled structure during silica synthesis, and thus can be used as various biomaterials such as a silica-based protein immobilizer, a biosensor, and a drug delivery system.
Korea University | Date: 2016-07-19
A 3-dimensional printing apparatus may include a storage unit, a dispensing unit, and a pressure control unit. The storage unit stores a printing material satisfying Bingham plastic model in which a viscosity is decreased as a pressure is increased. The dispensing unit receives the printing material from the storage unit to ejaculate the printing material. The pressure control unit controls a pressure applied to the printing material supplied in the dispensing unit to control a viscosity of the printing material. Thus, a product having soft characteristics may be manufactured.
Korea University | Date: 2016-01-27
Disclosed is a method of controlling a fleet of drones. A method in which a ground control station (GCS) controls a fleet of drones includes registering, by the GCS which is located on the ground, stores information about the drones, and controls the drones, all the drones constituting the fleet in a fleet list, configuring the fleet by synchronizing a physical position and a logical position for each of all the registered drones, controlling a form of the fleet based on a mission of the fleet or a peripheral environment having an influence on a flight of the fleet, and maintaining the fleet by immediately reflecting inclusion or departure in fleet information when the drone constituting the fleet is incorporated into or departs from the fleet.