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현대 한국어 문어 코퍼스 기반 연접 언어 단위 사용 양상 분석 -상징 부사의 출현 양상과 한국어 교육에서의 활용-
신민섭 ( Shin¸ Minsub ) 한국언어문화교육학회 2021 언어와 문화 Vol.17 No.3
This study analyzes the use of collocated language units including collocation or collocate of symbolic adverbs based on written corpus of contemporary Korean. Furthermore, this study suggested how to apply this result of analysis into Korean language education. As part of this study, first, 145 symbolic adverbs were extracted from a corpus which contains about 22 million words in accordance with their frequency which is more than 100. Next, as the subjects of analysis, three symbolic adverbs were designated: ‘Jeomjeom’ which is the most frequent symbolic adverb, ‘Ping’ which is the 50th most frequent and ‘Ttobakttobak’ which was the 100th frequent. As a result, this study analyzes the collocated language units of those three symbolic adverbs in each register in corpus and concluded the aspect of language uses. To summarize the argument for Korean language education, first, it is more effective to deliver symbolic adverbs with appropriate combined form. Second, its semantic differences should be delivered using related information or visual materials. Lastly, the aspect of language use and meanings should be suggested according to morphologic change. On balance, designing textbook, teaching and learning ought to be achieved with these suggestions in Korean language education. (Yonsei University)
Thermally-driven nanoscale pump by molecular dynamics simulation
Minsub Han 대한기계학회 2008 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.22 No.1
The feasibility of a device is studied that drives a fluid in nanoscale channel using a phenomenon called thermal transpiration, where the fluid is set in motion by a temperature gradient in the fluid-solid interface. Four different types of systems are considered using the Molecular Dynamics Simulation. They differ mainly in channel configuration and the way the gradient is applied. The simulation results show that the design of the device has major technical obstacles. One is a difficulty in imposing a sufficiently-large temperature gradient in the small scale. In this case, the feature like thermal-contact-resistance at the interface needs to be included in design considerations. The second is a limited flowdevelopment under an increased viscous drag in the narrow channel. One of the considered systems proves to be effective in a pumping operation. The system is based on a unit that repeats itself periodically in the system. The unit is composed of two regions: one that drives a fluid by thermophoretic force and the other that guides the fluid smoothly with little thermophoretic force. The latter region is made of a thermally-insulating, weakly-interacting solid.
Priority-Based Network Interrupt Scheduling for Predictable Real-Time Support
Minsub Lee,Hyosu Kim,Insik Shin 한국정보과학회 2015 Journal of Computing Science and Engineering Vol.9 No.2
Interrupt handling is generally separated from process scheduling. This can lead to a scheduling anomaly and priority inversion. The processor can interrupt a higher priority process that is currently executing, in order to handle a network packet reception interruption on behalf of its intended lower priority receiver process. We propose a new network interrupt handling scheme that combines interrupt handling with process scheduling and the priority of the process. The proposed scheme employs techniques to identify the intended receiver process of an incoming packet at an earlier phase. We implement a prototype system of the proposed scheme on Linux 2.6, and our experiment results show that the prototype system supports the predictable real-time behavior of higher priority processes even when excessive traffic is sent to lower priority processes.
Development of Water-Cooled Heat Sink for High-Power IGBT Inverter
Minsub Han,Su-Dong Lee,Chanook Hong,Chun-Suk Yang,Kyung-Seo Kim 전력전자학회 2007 ICPE(ISPE)논문집 Vol.- No.-
We present the development of a water-cooled heat sink that provides reliable thermal performance for high-power IGBT inverter. The development process comprises three stages. In the concept design, the thermal performances of two design proposals are considered. The thermal system of each design is particularly analyzed using the compact model. In the detailed design stage, specific dimensions of the heat sink are determined considering the design options under given external restrictions and the results from three-dimensional heat transfer analysis. The prototype of the resultant design is made and tested on the rig for final confirmation. We emphasize the relevant use of the thermal analysis on each stage and also discuss various practical issues involved.
Thermophoresis in Dense Gases : a Study by Born-Green-Yvon Equation
Minsub Han 대한기계학회 2005 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.19 No.4
Thermophoresis in dense gases is studied by using a multi-scale approach and Born-Yvon- Green (BYG) equation. The problem of a particle movement in an ambient dense gas under temperature gradient is divided into inter and outer ones. The pressure gradient in the inner region is obtained from the solutions of BYG equation. The velocity profile is derived from the conservation equations and calculated using the pressure gradient, which provides the particle velocity in the outer problem. It is shown that the temperature gradient applied to the quiescent ambient gas induces some pressure gradient and thus flow tangential to the particle surface in the interfacial region. The mechanism that induces the flow may be the dominant source of the thermophretic particle movement in dense gases. It is also shown that the particle velocity has a nonlinear relationship with the applied temperature gradient and decreases with increasing temperature.
Minsub Han 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.9
A numerical technique is presented that enables mass exchange at the liquid– solid interface region in a molecular simulation. Particles can be inserted and deleted in the solid region where interaction between the fluid and solid atoms is temporarily inactivated during the process. A simple momentum-increase scheme drives the inserted particles against the unfavorable free energy. The technique is efficient and stable for insertion of particles into dense and inhomogeneous regions. The thin film and sessile-drop evaporation phenomena are then investigated using the proposed technique that allows steady-state simulations. The evaporation coefficients for the nanoscale thin film and contact line were accurately and reliably measured. The evaporation coefficient near the contact line shows a discrepancy compared to that far from the contact line.