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Analysis of Two-Dimensional Mixing in Natural Streams Based on Transient Tracer Tests
Seo, Won,Choi, Hwang Jeong,Kim, Young Do,Han, Eun Jin American Society of Civil Engineers 2016 Journal of hydraulic engineering Vol.142 No.8
<P>To investigate the two-dimensional dispersion characteristics of the dissolved contaminant in natural rivers, tracer experiments were performed based on the instantaneous injection of Rhodamine WT solution into small- to medium-sized rivers in Korea. The relations between the dispersion coefficients and hydraulic and geometric variables of the river were analyzed in depth. The experimental results show that transverse dispersion coefficient tends to increase as the friction term, U/U*, and the channel aspect ratio, W/H, increase. The effect of the channel curvature on the rate of transverse mixing was found to be very distinct in that DT/HU* has a linear relation with UW/U*Rc, even though the slope of the fitted line in the plot of DT/HU* versus UW/U*Rc in a log-log scale was much smaller than the slope of the equation by Yotsukura and Sayre. The longitudinal dispersion coefficient also tends to increase as U/U* and W/H increase. However, DL is rather insensitive to the channel curvature. The values of the longitudinal dispersion coefficient from field studies are much higher than the theoretical value suggested by Elder. The observed longitudinal dispersion coefficient is one order of magnitude larger than Elder's coefficient, and DL/DT of this study ranges 26.6-332.</P>
A survey study of the disease awareness in the patients with primary cicatricial alopecia
( Seowon Song ),( Kyung Jae Lee ),( Dong Geon Lee ),( Hoon Kang ),( Bark-lynn Lew ),( Jee Woong Choi ),( Ohsang Kwon ),( Yang Won Lee ),( Beom Joon Kim ),( Young Lee ),( Jin Park ),( Moon-bum Kim ),( 대한피부과학회 2022 대한피부과학회 학술발표대회집 Vol.74 No.1
GeoMaTree : Geometric and Mathematical Model Based Digital Tree Authoring System
( Seowon Jung ),( Daeyeoul Kim ),( Jinmo Kim ) 한국인터넷정보학회 2018 KSII Transactions on Internet and Information Syst Vol.12 No.7
This study proposes a method to develop an authoring system(GeoMaTree) for diverse trees that constitute a virtual landscape. The GeoMaTree system enables the simple, intuitive production of an efficient structure, and supports real-time processing. The core of the proposed system is a procedural modeling based on a mathematical model and an application that supports digital content creation on diverse platforms. The procedural modeling allows users to control the complex pattern of branch propagation through an intuitive process. The application is a multi-resolution 3D model that supports appropriate optimization for a tree structure. The application and a compatible function, with commercial tools for supporting the creation of realistic synthetic images and virtual landscapes, are implemented, and the proposed system is applied to a variety of 3D image content.
Seowon Cho 국제과학영재학회 2016 APEC Youth Scientist Journal Vol.8 No.2
Lactobacillus contained in fermented milk, which has a lower pH, temperature, resistibility to toxicity of other bacteria, resistibility to hydrogen peroxide production and hydrogen peroxide itself, and resistibility to antibiotics than lactobacillus contained in Kimchi, was separated and cultured to obtain 24 types of lactobacillus. After they obtained adaptability to toxicity of E.coli, with the probiotics method, three types of lactobacillus were cultured in media containing fragments of Kimchi lactobacillus. When those cultured lactobacilli were used to produce Kimchi, the lactobacilli collected after the fermentation of Kimchi were the type with an enhanced resistibility to antibiotics, hydrogen peroxide, hydrogen peroxide production, toxicity on other bacteria, a low pH, and a low temperature.
Reducing the Shame, Anger and Aggression in Individuals with Narcissistic Traits through Validation
Seowon Shin,Changdai Kim,David K. Duys 한국상담학회 2022 Journal of Asia Pacific counseling Vol.12 No.1
This study investigated whether validation intervention, which conveys to a client that what they are experiencing is valid and understandable given their context, is effective in reducing the shame, anger, and aggression in individuals with narcissistic traits. Sixty-nine participants took a manipulated geometric reasoning test and received negative feedback on their performance. After that, they were randomly assigned to the validation or control group and listened to a recorded voice as an intervention. Shame and anger were measured before and after the intervention; in addition, baseline and post aggression were measured by the CRT game. Compared to the control group, the validation group reported lower levels of shame, anger, and aggression after the intervention. Implications for counseling using validation as an intervention and possible future research are discussed.
Understanding Organizational Change Into Entrepreneurship: A Theoretical Frameworks and Integration
Seowon Shin KINFORMS 2013 Management Review Vol.8 No.2
This qualitative study is to examine the process of organizational change into new entrepreneurship such as corporate spin-offs or intrapreneurship. In the study, the organizational change process is divided into two phases; Change initiation and change diffusion and key issues that should be considered in the future studies are suggested. In change initiation process, individual change agent are the change initiators who are responsible for identifying opportunities, realizing need for change and taking action. In change diffusion procedure, five different contextual factors are to be considered: (a) organizational environment, (b) change inertia or momentum (c) international and cultural atmosphere (d) resistance or receptivity to change and (e) time, sequencing, rhythm or pace. Then change initiation and diffusion processes are integrated into a single theoretical framework.
지서원(Seowon CHI),권문화(Wenhua Quan),찬와이밍(Wai Meng Chan) 경희대학교 학술단체협의회 2022 高凰論集 Vol.70 No.-
본 논문은 싱가포르대학교의 고급 한국어 학습자를 대상으로 1학기동안 진행한 프로젝트 기반 수업의 사례에 대한 연구이다. 프로젝트 수업은 학습자가 수업에서 배운 주제들을 교실 수업과 연계하여 교실밖에서도 배운 지식을 적용하고 새로운 지식을 주도적으로 학습할 수 있도록 하기 위해 설계되었다. 프로젝트 기반 수업은 학습자들이 직접 정한 주제에 대한 내용을 다양한 매체를 통해 자료를 취합하고 자료를 조사한 후 주제와 관련된 직업의 종사자 또는 전문가들과 인터뷰를 하는 것이다. 이 수업은 최종적으로 13주차 동안 준비한 내용 및 인터뷰 내용을 발표한 후 동료 평가와 교수자의 최종 평가로 구성되었다. 프로젝트 수업 후, 교사는 프로젝트에 참여한 18명의 학습자를 대상으로 프로젝트 수업에 대한 인식과 만족도 조사를 실시하였다. 조사 결과는 학습자들이 프로젝트 수업에 대해 긍정적으로 인식할 뿐만 아니라 프로젝트를 통해 한국 문화를 더 깊게 알게 되었고 학습자들의 고유문화와 비교하여 분석할 수 있는 기회가 되었다는 점을 긍정적으로 평가하였다. 또한 학습자들은 다양한 매체를 활용하여 한국어를 공부하고 있어서 13주간의 프로젝트 수업을 진행하는 데 큰 도움이 되었다고 밝혔다. 하지만 학습자들은 프로젝트 수업의 주제를 선정하는 부분에서 어려움을 느꼈다는 것을 알 수 있었다. 이에 주제선정 시 교사가 좀 더 많은 자료와 구체적이고 세부적인 지침을 적극적으로 제시하는 것이 프로젝트 수업에 도움이 된다는 것을 알 수 있었다. 본고는 싱가포르대학교 한국어 프로젝트 수업의 실제 사례를 제시함으로써 제2언어 환경에서 고급 학습자를 위한 프로젝트 수업의 설계를 위한 기초 자료를 제공했다는 점에서 의의가 있다.
최서원(Seowon Choi) 한국중원언어학회 2018 언어학연구 Vol.0 No.47
This study investigates how Chinese learners of Korean perceive and produce Korean lax, tense and aspirated consonants and how the perception and production are related. For this purpose an experiment was conducted in production and perception of Korean consonants with ten Chinese participants who were learning the Korean language for less than six months. According to the result, the Chinese participants had difficulties in perceiving Korean lax, aspirated, tense consonants in order and difficulties in producing Korean lax, tense and aspirated consonants in order. However, it is certain that there is correlation in perceiving and producing Korean tense consonants. In the experiment, most Chinese learners perceive Korean lax consonants as Korean aspirated consonants and produced them as Korean tense consonants. They mostly perceived Korean tense consonants as Korean lax consonants and produced them as Korean aspirated consonants. They perceived Korean aspirated consonants as Korean lax consonants and produce them as Korean lax consonants or as tense consonants.