• Title/Summary/Keyword: Sensitivity study

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도시하천 생태 체험 프로그램 적용이 초등학생의 환경 감수성에 미치는 영향 (The Effects of Urban Stream Ecological Experience Program on the Environmental Sensitivity of Elementary School Students)

  • 배효선;최도성;김영록
    • 한국환경교육학회지:환경교육
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    • 제24권1호
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    • pp.66-75
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    • 2011
  • The goal of this study is to investigate the effect of ecological experience program at the urban stream on the environmental sensitivity of elementary school students. In order to perform this study, two classes of 6th graders of M elementary school in Gwangju were selected and divided into two groups; one groups was the experimental group that undergoes ecological experience program at the Gwangju River, and another group was the control group that studied about environment in the classroom. The results of this study were as following. First of all, the experimental group has more influence on the environmental sensitivity than the control group. Secondly, the ecological experience program at the urban stream can be the effective method to build the environmental sensitivity of elementary school students. In conclusion, the results are showing that the ecological experience program at the urban stream helps elementary school students to change their environmental sensitivity in positive ways, also it gives idea that how to protect the environment and what they actually can do.

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색의 물리적 요소에 관한 감성인식 연구 (A Study on Sensitive Cognition for the Physical Factor of Color)

  • 심준형;이근희;오형술
    • 산업경영시스템학회지
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    • 제18권36호
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    • pp.31-39
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    • 1995
  • This study reflected sensitivity cognition in using color and evaluated the performance in task regarded GUI environment. Largely, three experiments were conducted. First, the searching time in text environment was compared with the searching time in color environment. Second, to know relationship of hue, saturation, lightness which are factors of color, and searching time, the searching time was measured using two-way ANOVA with interaction with three independent variables: hue, saturation, and distance. Third, sensitivity cognition about color was investigated and the performance of searching task was analyzed in the environment designed by color regarded sensitivity cognition. According to statistical results, the average searching time was decreased about 50.31% in color environment. The searching time was significant among the difference of hue and saturation. For the factor of color, the more the ratio of green and red was increased, the more searching time was decreased. The more the ratio of gray was increased, the more searching time was increased. And the searching time was developed in the environment designed by color regarded sensitivity. The purpose of this study is the presentation of sensitivity realization method and verification in the reflection and application of sensitivity to the industrial environment and design.

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유한요소법을 이용한 레이저 표면경화처리 공정변수의 민감도 해석 (Sensitivity Analysis of Processing Parameters for the Laser Surface Hardening Treatment by Using the Finite Element Method)

  • 이세환;양영수
    • Journal of Welding and Joining
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    • 제19권2호
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    • pp.228-234
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    • 2001
  • A methodology is developed and used to evaluate the response sensitivity of the thermal systems to variations in their design parameters. Technique for computing the sensitivity of temperature distributions to changes in processing parameters needed to decide the more effective laser input parameters for laser surface hardening treatment is considered. In this study, a state equation governing the heat flow in laser surface treatment is analyzed using a three-dimensional finite element method and sensitivity data of the processing parameter obtained using a direct differentiation method is applied to the sensitivity analysis. The interesting processing parameters are taken as the laser scan velocity and laser beam radius ( $r_{ b}$), and the sensitivities of the temperature T versus v and $r_{b}$ are analyzed. These sensitivity results are obtained with another parameters fixed. To verify the numerical analysis results, hardened layer dimensions (width and depth) of the numerical analysis are compared with the experimental ones.nes.

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유전 알고리즘을 이용한 수중운동체 조종성미계수의 민감도 최대화 입력 설계 (Design of Sensitivity-Maximizing Input for Submersibles' Manoeuvring Coefficients using Genetic Algorithm Technique)

  • 여동진;이기표
    • 대한조선학회논문집
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    • 제43권2호
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    • pp.156-163
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    • 2006
  • The accuracy of estimates of hydrodynamic coefficients can be increased by using sensitivity-maximizing inputs. In this study, sensitivity-maximizing actuator commands of a submersible, which are sequences of bang-bang type commands, were obtained using Genetic Algorithm (GA) optimization technique. By comparing the total sensitivity values, deduced actuator inputs were found to be superior to the other sea trials. Based on the sensitivity distribution of conventional sea trials and sensitivity distribution results through deduced input scenario a review of submersibles' manoeuvring equations of motion was conducted .

Approximate Method in Estimating Sensitivity Responses to Variations in Delayed Neutron Energy Spectra

  • J. Yoo;H. S. Shin;T. Y. Song;Park, W. S.
    • 한국원자력학회:학술대회논문집
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    • 한국원자력학회 1997년도 추계학술발표회논문집(1)
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    • pp.85-90
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    • 1997
  • Previous our numerical results in computing point kinetics equations show a possibility in developing approximations to estimate sensitivity responses of nuclear reactor We recalculate sensitivity responses by maintaining the corrections with first order of sensitivity parameter. We present a method for computing sensitivity responses of nuclear reactor based on an approximation derived from point kinetics equations. Exploiting this approximation, we found that the first order approximation works to estimate variations in the time to reach peak power because of their linear dependence on a sensitivity parameter, and that there are errors in estimating the peak power in the first order approximation for larger sensitivity parameters. To confirm legitimacy of our approximation, these approximate results are compared with exact results obtained from our previous numerical study.

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Mixed Methods Research on the Intercultural Sensitivity of Summer Program Participants; Comparison of US Participants and Korean Language Partners

  • Soyoung Jeong
    • International Journal of Advanced Culture Technology
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    • 제11권4호
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    • pp.112-122
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    • 2023
  • This study was conducted as part of a summer Korean language and culture program at a university in Korea, aimed at examining the changes in intercultural sensitivity among American students who participated in the program, as well as the Korean students who served as their language partners. The research utilized a mixed-method approach combining qualitative and quantitative analysis. To derive research findings, pre- and post-program Intercultural Sensitivity Scale surveys were administered to participating students and semi-structured interview data were collected from a randomly selected group of six students. The research findings indicated that among a total of twenty-seven students including both American and Korean students, significant changes in intercultural sensitivity were observed in the domain of Interaction Engagement. Furthermore, fourteen American students showed significant changes in their Interaction Confidence, while the Korean students who participated as language partners did not exhibit significant changes in the five subdomains of intercultural sensitivity.

대학생의 우울과 대인관계능력의 관계: 거부민감성의 조절효과 (Depression and Interpersonal Competence in University Students: The Moderating Effect of Rejection Sensitivity)

  • 권명진;최현숙
    • 산업융합연구
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    • 제21권10호
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    • pp.131-139
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    • 2023
  • 본 연구는 대학생의 우울과 대인관계능력과의 관계에서 거부민감성의 조절효과를 규명하기 위한 서술적 조사연구이다. 자료수집은 2020년 9월부터 10월까지 진행되었으며, D시와 C도 소재 대학교에 재학중인 대학생 184명이 자가보고식 설문지를 작성하였다. 수집된 자료는 SPSS 26.0 프로그램을 이용하여 Pearson 상관분석과 위계적 회귀분석을 실시하였다. 본 연구에서 대학생의 우울, 거부민감성은 대인관계능력에 대한 유의한 영향요인으로 확인되었으며, 거부민감성은 우울과 대인관계능력의 관계에서 조절효과를 나타냈다. 본 연구의 결과는 대학생의 우울, 거부민감성, 대인관계능력 간의 작용 기제에 대한 기초자료를 제공하며, 대학생의 대인관계능력을 향상시키기 위한 중재 프로그램에 우울과 거부민감성의 요소를 포함시켜야 함을 시사한다. 본 연구의 결과를 토대로 대학생의 대인관계능력을 향상시킬 수 있는 실질적이고 개별화된 중재 프로그램 개발을 위한 연구를 제언한다.

Sensitivity Study of Smoothed Particle Hydrodynamics

  • Kim, Yoo-Il;Nam, Bo-Woo;Kim, Yong-Hwan
    • Journal of Ship and Ocean Technology
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    • 제11권4호
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    • pp.29-54
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    • 2007
  • Systematic sensitivity analysis of smoothed particle hydrodynamics method (SPH), a gridless Lagrangian particle method, was carried out in this study. Unlike traditional grid-based numerical schemes, systematic sensitivity study for computational parameters is very limited for SPH. In this study, the effect of computational parameters in SPH simulation is explored through two-dimensional dam-breaking and sloshing problem. The parameters to be considered are the speed of sound, the type of kernel function, the frequency of density re-initialization, particle number, smoothing length and pressure extraction method. Through a series of numerical test, detailed information was obtained about how SPH solution can be more stabilized and improved by adjusting computational parameters.

Random하중하의 피로크랙 진전수명에 대한 파라미터의 영향도평가 (Parameter Sensitivity Study on Fatigue Crack Propagation Life Under Random Loadings)

  • 윤한용
    • 대한기계학회논문집
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    • 제17권1호
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    • pp.46-50
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    • 1993
  • 본 연구에서는 실제의 하중에서 관찰되는 경우가 많고, 또한, 이론적 취급이 용이한 협대역(narrow band)파형을 대상으로 했으니, 다른 파형의 경우도 대략적인 경 향은 파악할 수 있으리라 생가되며 극치의 확률분포만 주어지면 본 수법과 마찬가지로 동일하게 적용할 수 있다.

부모양육행동이 청소년의 사이버일탈에 미치는 영향 - 도덕적 민감성의 매개효과 검증 (The effect of parenting behaviors on the cyber delinquency in adolescents - The mediating effects of moral sensitivity -)

  • 이현
    • 한국가족관계학회지
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    • 제22권2호
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    • pp.51-69
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    • 2017
  • Objectives: The purpose of this study was to examine the associations and paths among parenting behaviors, cyber delinquency, and moral sensitivity in adolescents to reduce and prevent cyber delinquency. Method: The data was collected by a survey for 270 students from a middle school and a high school in G city. The valid 262 cases were analyzed by frequency, descriptive analysis with SPSS 18.0 and tested by structural equation model by using AMOS 18.0 program. Results: Results showed that 1) 'control' among the parenting behaviors has positive effects on the cyber delinquency in adolescents, 2) 'intimacy and rationality' among the parenting behaviors has positive impacts on the moral sensitivity, 3) it shows that moral sensitivity has negative effects on the cyber delinquency in adolescents, and 4) bootstrapping test for indirect effect of moral sensitivity was verified significantly. We founded the full mediation of moral sensitivity and the path of 'intimacy and rationality' to cyber delinquency through moral sensitivity. Conclusions: The results implied 1) provision of the parent education and program for parents and newlyweds to learn positive parenting behaviors and 2) application of moral education to develop moral sensitivity of adolescents in schools and communities.