http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Jintae Cho,Seong-chul Kwon,Jae-Han Kim,Jong-Nam Won,Seong-Soo Cho,Juyong Kim 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.3
A new system for evaluating the voltage management errors of distribution equipment is presented in this paper. The main concept of the new system is to use real distribution live-line voltage to evaluate and correct the voltage measurement data from distribution equipment. This new approach is suitable for a new Distribution Management System (DMS) which has been developed for a distribution power system due to the connection of distributed generation growth. The data from distribution equipment that is installed at distribution lines must be accurate for the performance of the DMS. The proposed system is expected to provide a solution for voltage measurement accuracy assessment for the reliable and efficient operation of the DMS. An experimental study on actual distribution equipment verifies that this voltage measurement accuracy assessment system can assess and calibrate the voltage measurement data from distribution equipment installed at the distribution line.
Kim, Taehoon,Kim, Juyong,Cho, Jintae,Jung, Jae-Seung The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.3
Voltage stabilization is an essential component of power quality in low voltage DC (LVDC) microgrid. The microgrid demands the interconnection of a number of small distributed power resources, including variable renewable generators. Therefore, the voltage can be maintained in a stable manner through the control of these distributed generators. In this study, we did research on the new advanced operating method for a photovoltaic (PV) simulator in order to achieve interconnection to a bipolar LVDC microgrid. The validity of this voltage stabilization method, using the distributed generators, is experimentally verified. The test LVDC microgrid is configured by connecting the developed PV simulator and DC load, DC line, and AC/DC rectifier for connecting the main AC grid. The new advanced control method is applied to the developed PV simulator for the bipolar LVDC grid in order to stabilize the gird voltage. Using simulation results, the stabilization of the grid voltage by PV simulator using the proposed control method is confirmed the through the simulation results in various operation scenarios.
Flow-enhanced electrochemical immunosensors on centrifugal microfluidic platforms.
Kim, Tae-Hyeong,Abi-Samra, Kameel,Sunkara, Vijaya,Park, Dong-Kyu,Amasia, Mary,Kim, Nahui,Kim, Jintae,Kim, Hanshin,Madou, Marc,Cho, Yoon-Kyoung Royal Society of Chemistry 2013 Lab on a chip Vol.13 No.18
<P>We present a novel fully integrated centrifugal microfluidic device with features for target antigen capture from biological samples, via a bead-based enzyme-linked immune-sorbent assay, and flow-enhanced electrochemical detection. The limit of detection (LOD) of our device for the C-reactive protein (CRP) was determined to be 4.9 pg mL(-1), a 17-fold improvement over quantification by optical density. The complete sample-to-answer protocol of our device is fully automated and takes less than 20 min. Overall, the presented microfluidic disc adds to the comparatively small number of fully integrated microfluidic-based platforms that utilize electrochemical detection and exemplifies how electrochemical detection can be enhanced by flow to successfully detect very low levels of biomarkers (e.g. pg mL(-1)).</P>
A study on reliability assessment of a decay heat removal system for a sodium-cooled fast reactor
Kim, Jintae,Jae, Moosung Elsevier 2018 Annals of nuclear energy Vol.120 No.-
<P><B>Abstract</B></P> <P>Probabilistic risk assessment is expected to play a major role in the design and regulation framework for future reactors. Since the safety of a sodium-cooled fast reactor largely depends on the reliability of a decay heat removal system, which adopts a passive safety feature, it is necessary to assess the reliability of this system in order to conduct probabilistic risk assessment. Currently existing reliability assessment methodology is based on the probability of component failures and human errors. However, this design does not work as a passive safety system consisting of active components that do not need any external input to operate. In this study, a methodology for evaluating the reliability of a passive safety system that includes functional failure is proposed. The Prototype Gen-IV Sodium-cooled Fast Reactor that is currently under development in Korea was selected as the reference reactor, and the functional reliability of the decay heat removal system in the reactor was calculated by uncertainty propagation of the system parameters that can affect system failure. Sensitivity analysis was also performed to determine which parameters have crucial effects on system failure.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The reliability of a decay heat removal system which is the passive system of a sodium-cooled fast reactor has been assessed using the functional failure concept. </LI> <LI> Latin hypercube sampling in conjunction with partial rank correlation coefficient method has been utilized for sensitivity analysis. </LI> <LI> Control rod drive line and reactor vessel expansion reactivity coefficient is/has been identified to have the greatest influence on the functional reliability of the decay heat removal system in the unprotected loss of heat sink accident. </LI> </UL> </P>
A New Filter-Bank Multicarrier System: The Linearly Processed FBMC System
Kim, Jintae,Park, Yosub,Weon, Sungwoo,Jeong, Jinkyo,Choi, Sooyong,Hong, Daesik IEEE 2018 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS Vol.17 No.7
<P>In this paper, we propose a linearly processed filter-bank multicarrier (LP-FBMC) system which employs faster than Nyquist signaling to remove residual intrinsic interferences. We represent the FBMC transceiver in a matrix form and then apply singular value decomposition-based linear transformation in order to convert the overlapped FBMC data into parallel independent interference-free data. This interference-free characteristic of the proposed LP-FBMC system enables the use of conventional multiple antenna configurations. Performance evaluations show that out-of-band emission performance of the proposed LP-FBMC system is superior to those of conventional quadrature amplitude-based FBMC (FBMC-QAM) and orthogonal frequency division multiplexing systems. Furthermore, the proposed LP-FBMC system outperforms the conventional FBMC-QAM in terms of bit error rate performance when high order modulation is employed under time-varying channel and multiuser uplink environment.</P>
Jintae Jeong,Yurry Um,Mok Hur,Yeonbok Kim,Dawoon Jeong,Chansik Jung,Seongcheol Kim 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.05
Background : ‘baek-chul’(White atractylodes rhizome) widely used in traditional herbal remedies in Asia. A. Japonica and A. Macrocephala are used as ‘baek-chul’ in Japanese Pharmacopoeia but only A. Macrocephala is used as ‘baek-chul’ in Chinese Pharmacopoeia. Based on morphologic observation A. japonica has small infloresence diameter, white flowers and gynodioecism, whereas A. macrocephala has large inflorescence diameter, red flowers ,monoecism and developed rhizomes. but The distinction of these isn't easy. SSRs are very useful molecular markers for species identification. In this study, genetic diversity and identification between A. Japonica and A. Macrocephala were confirmed by SSR marker. Methods and Results : DNAs were extracted from leaf tissue of A. Japonica, A. Macrocephala and A. Japonica × A. Macrocephala (Breeding varieties, ‘Dachul’) using DNeasy plant Mini Kit (Qiagen, Hilen, Germany). these plants cultivated from RDA(Eumseong) and used for PCR amplification. The relative concentration of the extracted DNA was estimated Nano Drop ND-1000 (NanoDrop Technologies, Wilmington, De, USA) And final DNA concentration was adjusted to 5.5ng/μL. In this study 8 primer pairs were tested on 4 A. Japonica, 4 A. Macrocephala, 2 ‘Dachul’. These primers showed high polymorphism among and within four populations of A. macrocephala.(Zheng et al.). We detected interspecific and intraspecific SSR polymorphism by 3 primer pairs. Conclusion : The results showed that these markers were found to be useful for diversity analysis as they distinguished among Atractylodes spp. and also A.Macrocephala. This work is intended to serve as the basis for the breeding of new varieties in white atractylodes rhizome.