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Widget-based Web Development: Basic Ideas
Daeyong Shin,Sugwon Hong 한국멀티미디어학회 2009 한국멀티미디어학회 국제학술대회 Vol.2009 No.-
Current web frameworks provide "code-reuse" for efficient and fast web development, but do not support "concept-reuse." In this paper we propose the basic ideas of widget-based web development which can provide "concept-reuse." In this scheme, widgets are the key elements which can integrate web services and user interfaces. To use "concept-reuse" in the application level, categorization will be used with widgets. A widget is considered as a web application unit, and the new applications are made by widgets. However, a widget is designed as a standalone application, so there are problems in integrating widgets. This paper proposes methods to solve those problems.
A New Mathematical Formulation For The Classical Assembly Line Balancing Problem
Shin, Dooyoung,Lee, Daeyong 한국경영과학회 1994 韓國經營科學會誌 Vol.19 No.2
This paper presents a new integer formulation (Type Ⅲ ALB) for a single model assembly line balancing problem. The objective of the formulation is to minimize the total idle time, which is defined as the product of the number of work stations and the cycle time minus the total work content. This formulation considers currently existing Type Ⅰ (minimizing the number of work stations for a given cycle time) and type Ⅱ (minimizing the cycle time for a given number of work stations) formulations as its special cases and provides the global minimum solutions of the cycle time and the number of work stations. This information would be of great value to line designers involved in designing new assembly lines and rebalancing old lines under flexible conditions. Solution methods based on combination of Type Ⅰ and Type Ⅱ approaches are also suggested and compared.
Woo-Yeol Shin,Gi-Moon Hong,Hyongmin Lee,Jae-Duk Han,Kyu-Sang Park,Dong-Hyuk Lim,Sunkwon Kim,Daeyong Shim,Jung-Hoon Chun,Deog-Kyoon Jeong,Suhwan Kim IEEE 2013 IEEE transactions on components, packaging, and ma Vol.3 No.5
<P>In this paper, we introduce an impedance-matched bidirectional multidrop (IMBM) DQ bus, together with a 4.8-Gb/s transceiver for a memory controller that supports this bus. Reflective ISI is eliminated at each stub of the IMBM DQ bus by resistive unidirectional impedance matching. A prototype memory controller transceiver is designed and fabricated in a 0.13-μm CMOS process and operates with a 1.2-V supply voltage. Its effectiveness is shown on various multidrop channel configurations. At 4.8 Gb/s, this transceiver with a 4-slot, 8-drop IMBM DQ bus has an eye opening of 0.39 UI in TX mode and 0.58 UI in RX mode, at a threshold of 10<SUP>-9</SUP> BER, whereas a comparable transceiver with a conventional 4-slot, 8-drop stub series terminated logic has no timing margin under the same test conditions. Our transceiver consumes 14.25 mW/Gb/s per DQ in TX mode, and 13.69 mW/Gb/s per DQ in RX mode.</P>
A Dose Verification Method for Proton Therapy by Using a Plastic Scintillation Plate
김동욱,임영경,Jungwook Shin,Sungwhan Ahn,신동호,윤명근,이세병,Sung-Yong Park,DaeYong Kim,곽정원,김진성 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.2
An interesting issue in proton therapy is how to reduce the time needed for percent depth dose (PDD) measurement and how to prepare a two-dimensional dose measurement tool for a proton scanning beam. Currently, three-dimensional water phantom systems are used for range verification in the scattering beam mode of proton therapy. However, this approach is very slow and is in appropriate for use with a proton scanning beam. At the National Cancer Center in Korea (NCC), we have developed a simple and easy-to-handle range verification system that consists of a plastic scintillation plate, a PMMA (poly methyl methacrylate) phantom, a charge-coupled device camera, and a one-dimensional moving table. In the present study, the linearity of the signal with the dose, the background signal measurement and correction, and the influence of the ionization density on the signal were investigated using our new system. The measured yield depended linearly on the dose, and the dose range measurements had a spatial resolution of about 1 mm.
Pb 금속필러가 첨가된 PbO-Bi<sub>2</sub>O<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-ZnO-SiO<sub>2</sub>계 유리의 특성
최진삼,정대용,신동우,배원태,Choi, Jinsam,Jeong, DaeYong,Shin, Dong Woo,Bae, Won Tae 한국세라믹학회 2013 한국세라믹학회지 Vol.50 No.3
We investigated the effect of Pb-metal filler added to a hybrid paste(PbO-$Bi_2O_3-B_2O_3$-ZnO glass frit and Pb-powder), for joining flip-chip sat lower temperatures than normal. The glass transition temperature was detected at $250^{\circ}C$ and the softening point occurred at $330^{\circ}C$. As the temperature increased, the specific density decreased due to the volatility of the Pb-metal and boron component in the glass. When the glass was heat-treated at $350^{\circ}C$ for 5 min, XRD results revealed a crystalline $Pb_4Bi_3B_7O_{19}$ phase that had been initiated by the addition of Pb-filler in the hybrid paste. The addition of the Pb-metal filler caused are action between the Pb-metal and glass that accelerated the formation of the liquid phase. The liquid phase that formed, promoted bonding between the flip-chip substrate sat lower temperature.
Shi, Wei,Han, Jonghoon,Kim, Changwan,Lee, Daeyong,Shin, Hyunkyoung,Park, Hyunchul Elsevier 2015 RENEWABLE ENERGY Vol.74 No.-
<P><B>Abstract</B></P> <P>Korea has huge potential for offshore wind energy and the first Korean offshore wind farm has been initiated off the southwest coast. With increasing water depth, different substructures of the offshore wind turbine, such as the jacket and multipile, are the increasing focus of attention because they appear to be cost-effective. However, these substructures are still in the early stages of development in the offshore wind industry. The aim of the present study was to design a suitable substructure, such as a jacket or multipile, to support a 5 MW wind turbine in 33 m deep water for the Korean Southwest Offshore Wind Farm. This study also aimed to compare the dynamic responses of different substructures including the monopile, jacket and multipile and evaluate their feasibility. We therefore performed an eigenanalysis and a coupled aero-hydro-servo-elastic simulation under deterministic and stochastic conditions in the environmental conditions in Korea. The results showed that the designed jacket and multipile substructures, together with the modified monopile, were well located at soft–stiff intervals, where most modern utility-scale wind turbine support structures are designed. The dynamic responses of the different substructures showed that of the three substructures, the performance of the jacket was very good. In addition, considering the simple configuration of the multipile, which results in lower manufacturing cost, this substructure can provide another possible solution for Korean’s first offshore wind farm. This study provides knowledge that can be applied for the deployment of large-scale offshore wind turbines in intermediate water depths in Korea.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A jacket as well as a multipile substructure was designed to support 5MW OWT for Korean offshore demonstration project in 33 m water depth. </LI> <LI> A fully coupled dynamic analysis was conducted based on Korean environmental conditions. </LI> <LI> The dynamic responses of the three substructures were compared to find their feasibility. </LI> <LI> The jacket had the best performance in terms of the investigated loads. </LI> <LI> The multipile results were comparable with the jacket substructure. </LI> </UL> </P>
통증 두려움과 회피행동의 관계에 금전동기가 미치는 영향
김분옥(Bun-Ok Kim),김기성(Kiseong Kim),신대용(Daeyong Shin),조성근(Sungkun Cho) 대한스트레스학회 2019 스트레스硏究 Vol.27 No.1
본 연구 목적은 통증 두려움이 금전동기에 따라 회피행동에 미치는 영향을 살펴보는 것이다. 건강한 남녀 80명을 대상으로 통증 두려움과 금전동기 조건에 따라 4집단 중 1개 집단에 무선 할당했다. 실험결과, 고-통증 두려움 집단이 저-통증 두려움 집단에 비해 영상 시청과 과제 수행 동안 자율신경계가 더욱 활성화되었다. 또한 통증 두려움과 금전동기 조건에 따라 회피행동에 미치는 상호작용 효과가 유의했다. 저-통증 두려움 집단에서는 금전동기 조건에 상관없이 과제 수행 지연시간에 유의한 차이가 없었던 반면, 고-통증 두려움 집단에서는 금전동기가 높을수록 과제 수행 지연시간이 유의하게 더 짧았다. 본 연구는 수정된 두려움-회피 모형을 지지하는 경험적 증거를 제공하며 경쟁목표 차단 기제의 발현을 실험적으로 증명한다. Background: The purpose of this study was to examine the effects of monetary motivation on the relationship between pain-related fear and avoidance behavior. Methods: Eighty healthy volunteers were randomly assigned to one of four groups in accordance with task conditions of pain-related fear (high or low) and monetary motivation (high or low). Results: The autonomic nervous system was more active in the high pain-related fear group than in the low pain-related fear group as the participants watched a video and performed a task. Also, pain-related fear and monetary motivation had a significant interaction effect on avoidance behavior. High monetary motivation was associated with a shorter delay time during task performance in the high pain-related fear group. No significant difference was observed in the delay time in the low pain-related fear group. Conclusions: This study provides empirical evidence supporting the modified fear-avoidance model and experimentally proves the activation of the goal shielding mechanism.