Yeungnam University is a private research university, located in Gyeongsan, North Gyeongsang, South Korea. The university's predecessors, Taegu College and Chunggu College, were founded in Daegu in 1947 and 1950 respectively. In 1967, the two colleges merged by President Park Chung-hee to form the degree-granting Yeungnam University. In 1972, the university's new main campus opened in Gyeongsan east of Daegu. The university includes colleges of Law and Medicine and a teaching hospital. Wikipedia.
LG Corp and Yeungnam University | Date: 2016-08-10
A motor driving apparatus included in a home appliance may include an inverter to convert a direct current (DC) power into an alternating current (AC) power through a switching operation and to output the converted AC power to a motor, an output current detector to detect an output current flowing through the motor, a controller to control the inverter, wherein, during a first interval after the motor stops, the controller controls a phase current of a predetermined frequency to flow through the motor to estimate a position of a rotor of the motor, and estimates the position of the rotor of the motor based on the detected output current while the phase current of the predetermined frequency flows through the motor. Thereby, the sensorless motor driving apparatus can easily estimate the position of the motor rotor.
Yeungnam University | Date: 2016-08-17
Provided is a three-dimensional composite of nickel cobalt oxide/graphene on nickel foam as high-performance electrode materials for supercapacitors and a method for preparing the same, and the electrode comprising a three-dimensional nickel cobalt oxide/graphene on nickel foam exhibited an ultrahigh specific capacitance of 2,260 F/g at a current density of 1 A/g.
Lsis Co. and Yeungnam University | Date: 2016-09-08
Disclosed embodiments relate to apparatuses, methods, and systems for restarting an induction machine. In some embodiments, a method includes estimating a position of a rotor and a speed thereof in a position and speed estimation Operation, resetting a speed reference to correspond to the speed of the rotor in a speed reference resetting Operation, generating a control voltage corresponding to the speed reference to regulate a voltage magnitude using the control voltage in a voltage magnitude regulation Operation, and re-accelerating the induction machine up to a target speed after the regulation of the voltage magnitude in a re-acceleration Operation.
Yeungnam University | Date: 2016-01-06
Disclosed are a system and a method for detecting feature points of a face. The system for detecting feature points of a face include: a training unit configured to divide each of a plurality of facial images into segments of a predetermined size, and generate an eigen-codebook representing a correlation between a feature vector of each of the divided segments and location of a predetermined feature point in the facial image; and a detection unit configured to detect a facial area from a target image, divide the facial area into segments of a predetermined size, detect a feature vector of each of the divided segments of the facial area, and detect a location of a feature point in the facial area by using the detected feature vector and the eigen-codebook.
LG Corp and Yeungnam University | Date: 2017-02-15
A home appliance (100) is disclosed, including a first circuit unit (610) including a converter (605) configured to convert an Alternating Current (AC) power into a Direct Current (DC) power, a first coil (619), a first modulator/demodulator (612) configured to wirelessly transmit the DC power generated by the converter (605) using the first coil (619), and a first controller (210) configured to control the first modulator/demodulator (612), and a second circuit unit (620) including a second coil (629) configured to receive a wireless power transmitted by the first circuit unit (610), a second modulator/demodulator (622) configured to convert the wireless power received from the second coil (629), a rectifier (623) configured to rectify an AC power generated by the second modulator/demodulator (622), and a second controller (625) configured to control operation of the second modulator/demodulator (622), wherein the first modulator/demodulator (612) and the second modulator/demodulator (622) perform bidirectional time-division data communication.
LSIS Co. and Yeungnam University | Date: 2017-03-15
A method for restarting an induction machine of the present disclosure includes estimating a position of a rotor and a speed thereof in a position and speed estimation Operation, resetting a speed reference to correspond to the speed of the rotor in a speed reference resetting Operation, generating a control voltage corresponding to the speed reference to regulate a voltage magnitude using the control voltage in a voltage magnitude regulation Operation, and re-accelerating the induction machine up to a target speed after the regulation of the voltage magnitude in a re-acceleration Operation.
Kim H.-Y.,Yeungnam University
Antioxidants and Redox Signaling | Year: 2013
Significance: Selenium is utilized in the methionine sulfoxide reduction system that occurs in most organisms. Methionine sulfoxide reductases (Msrs), MsrA and MsrB, are the enzymes responsible for this system. Msrs repair oxidatively damaged proteins, protect against oxidative stress, and regulate protein function, and have also been implicated in the aging process. Selenoprotein forms of Msrs containing selenocysteine (Sec) at the catalytic site are found in bacteria, algae, and animals. Recent Advances: A selenoprotein MsrB1 knockout mouse has been developed. Significant progress in the biochemistry of Msrs has been made, which includes findings of a novel reducing system for Msrs and of an interesting reason for the use of Sec in the Msr system. The effects of mammalian MsrBs, including selenoprotein MsrB1 on fruit fly aging, have been investigated. Furthermore, it is evident that Msrs are involved in methionine metabolism and regulation of the trans-sulfuration pathway. Critical Issues: This article presents recent progress in the Msr field while focusing on the physiological roles of mammalian Msrs, functions of selenoprotein forms of Msrs, and their biochemistry. Future Directions: A deeper understanding of the roles of Msrs in redox signaling, the aging process, and metabolism will be achieved. The identity of selenoproteome of Msrs will be sought along with characterization of the identified selenoprotein forms. Exploring new cellular targets and new functions of Msrs is also warranted. © 2013, Mary Ann Liebert, Inc.
Method Of Treating Inflammatory Bowel Disease Comprising Administering A Pharmaceutical Composition Comprising A 6-Aminopyridin-3-Ol Compound Or A Pharmaceutically Acceptable Salt Thereof As An Active Ingredient To A Subject
Yeungnam University | Date: 2016-08-16
Provided is a method of treating inflammatory bowel disease comprising administering a pharmaceutical composition comprising a 6-aminopyridin-3-ol compound or a pharmaceutically acceptable salt thereof as an active ingredient to a subject, which inhibits colitis in a model of inflammatory bowel disease, and accordingly, they may be suitable for use as a drug for the prevention or treatment of inflammatory bowel disease.
Jung J.J.,Yeungnam University
Information Sciences | Year: 2012
Metadata about information sources (e.g., databases and repositories) can be collected by Query Sampling (QS). Such metadata can include topics and statistics (e.g., term frequencies) about the information sources. This provides important evidence for determining which sources in the distributed information space should be selected for a given user query. The aim of this paper is to find out the semantic relationships between the information sources in order to distribute user queries to a large number of sources. Thereby, we propose an evolutionary approach for automatically conducting QS using multiple crawlers and obtaining the optimized semantic network from the sources. The aim of combining QS and evolutionary methods is to collaboratively extract metadata about target sources and optimally integrate the metadata, respectively. For evaluating the performance of contextualized QS on 122 information sources, we have compared the ranking lists recommended by the proposed method with user feedback (i.e., ideal ranks), and also computed the precision of the discovered subsumptions in terms of the semantic relationships between the target sources. © 2011 Elsevier Inc. All rights reserved.
Yeungnam University | Date: 2016-03-25
The present invention relates to an inverter vector driving system and a method for estimating capacitance using the same. The present invention provides a method for estimating capacitance in an inverter vector driving system including a capacitor to which a rectified DC voltage of a three-phase power supply is charged, and a PWM inverter configured to transform the DC voltage into a three-phase AC voltage to be applied to a motor of an induction motor, including: operating the motor of the IM in a regeneration mode; generating a d-axis voltage command and a q-axis voltage command for the motor; adjusting a pulse of the PWM inverter by using the d-axis voltage command and the q-axis voltage command; and estimating capacitance of the capacitor by using a DC-link voltage and a DC-link current that are generated at the capacitor due to the inclusion of the AC component.