A study on using acoustic emission in rock slope with difficult ground – focused on rainfall

Yo-Seph Byun,Myung Sagong,Suk-Chun Kim,Byung Sik Chun,Seong-Yong Park,Hyuk-Sang Jung 한국지질과학협의회 2012 Geosciences Journal Vol.16 No.4

This study attempted to predict slope failures by applying AE techniques to a rock slope with a history of collapse. Damage levels were assessed on the basis of the AE characteristics estimated by conducting laboratory tests on simulated slope failures. The test results showed that the specimen showed a very high degree of failure at the initial stage of loading, which was analyzed using the AE characteristics to assess the damage levels. The variation in the measured number of AE hits and AE events in field tests may indicate minute variations in the slope. The measured values appeared to be insignificant as they were less than the minimum criterion for damage. An analysis of rainfall, which is an important factor in slope behavior, showed that as rainfall increased, the number of AE hits and AE events also increased. In particular, when the cumulative rainfall was constant, the cumulative number of AE hits and AE events appeared to converge, indicating that the cumulative rainfall and the number of AE hits are closely connected. When applying AE techniques to a slope that has a high probability of failure, the failure prediction of the specific location and the early prediction of failure behavior on rock slopes became possible.

Risk Management in Public Sectors: Critical Analysis with System Dynamics Approach

Jo Seph Yoon,In Pyo Hwang 한국정책학회 2006 한국정책학회 추계학술발표논문집 Vol.2006 No.-

청소년의 포르노그래피 접촉에 대한 기독교상담 방안

전요섭 ( Jo Seph Jeon ) 한국복음주의 기독교상담학회 2014 복음과 상담 Vol.22 No.1

이 논문은 청소년의 포르노그래피 접촉이 성 폭력의 원인이라는 것을 전제로 그 폐해를 심리학적인 면, 영적인 면에서 밝히고 그에 대응하는 기독교상담 방안을 연구하였다. 이 연구에서 청소년의 반복된 포르노그래피 노출은 성 중독을 야기하며 더 나아가서 다양한 성 행동 및 성 폭력의 원인이라는 것을 분석하였다. 결국 포르노그래피 접촉의 폐해는 성을 창조하신 하나님의 의도를 왜곡시키는 것은 물론, 여성 비하 및 남성 지배구조의 사고를 형성하고, 성기 중심적, 쾌락 중심적 성 인식을 형성하게 하며, 성 폭력의 원인이 된다는 점에서 시급해 해결해야 할 문제라고 분석하였다. 이에 일반적인 포르노그래피 단절 방법인 가정에서 컴퓨터 관리, 교회와 학교 등지에서 교육과 상담의 활성화, 안전 조치를 위한 정책 차원의 억제가 기본 사항임을 확인했다. 더 나아가 기독교상담에서는 포르노그래피 노출자 및 내담자의 죄책감을 해결하는 차원에게 자신의 문제를 인식하고 자기 노출이 필요하며 회개를 촉구하고 용서를 수용하도록 해야 한다는 것을 강조했다. 상담 및 교육관련자들은 청소년에게 성을 창조하신 하나님의 의도를 깨닫고 성기 중심의 성이 아닌 친밀관계가 중요하다는 인식을 갖도록 하는 것이 중요하다. 친밀관계는 먼저 하나님과의 관계 회복이 필수적이라는 사실을 제시했다. This paper is to clarify Christian counseling on adolescent pornographic use. Human being is born with one``s own gender, male or female. It is natural for human being to show interests in opposite gender. Accordingly, liberal theological viewpoints emphasize that adolescent pornograph use is through which one becomes an adult. So, the adolescent pornograph use is understood as a means of eliminating one``s sexual desire. However, one should not consider pornograph insignificantly. There have been many discussions about this issue for the last two decades. But these discussions have not come to an end, and there are many different opinions. From a conservative perspective, pornography is the basic cause of sexual immorality, transgression, social evil practices and many crimes. They emphasize that pornography has to be strongly prohibited. But liberals insist that pornography has an effect of psychological catharsis including exhalation of sexual aggression. Those who become exposed to pornography in their adolescent years will consider that sexual pleasure is happiness of their lives. It seems like this sexual problem is adults in common. Repetition of pornograph use in adolescence will cause a wrong sexual awareness and abnormal sexual conducts. The pornograph use will cause not only invite a barrier to Christian faith development but also communicate various spiritual evil practices. An evangelical Christian counselor ought to adolescent pornograph use will cause non-biblical conduct and transgression. Pornography includes video tapes, images, DVDs, mp3 sounds, pictures, etc. However, in digital era, most adolescents become exposed to pornography through smart phone or internet. The development of the mass media leads to more aceess to pornography. Recently, a development of three-dimensional image brings a press for the improvement in pornography quality. The 3D image gives the peripheral and strong stimulus. The producer of pornography will get an exorbitant economic profits through the 3D images. Lastly, the influence of pornography is going to increase everywhere. When a male and a female adolescent contact pornography at the same time, the male adolescent tends to induce more sexual impulse and desires than the female adolescent. This research deals with definition and notion of pornography, actual condition and evil practices of pornography, biblical understanding on pornography and methods of Christian counseling on pornography. The researcher believes the pornographic use degrades women, and enhances male``s tendency to dominate over women. Also, other problems of the pornographic use make adolescent genital and to have pleasure centered thinking, abnormal sexual conducts, mimicry of pornography, sexual addiction, aggression, and spiritual evils. It is hard to pray truthfully, especially in the exposed in pornography from spiritual evil practices. Some adolescents who are exposed to pornography have doubts about their spirituality. One is unable to find the evincible instruction on pornography in the Bible. There is no ``pornography`` in the Bible at all. However, there are many passages on obscene sin such as Genesis 9:22-23, Exodus 28:42, Psalm 119:37, and more. Pornography exposure is continued to an addiction immediately. In order to be freed from pornograph use, first, one needs to acknowledge and confess one``s sin. Second step is to repent and seek forgiveness. Third step is to recognize the importance of having an intimate relationship with God. Evangelical Christian counselors ought to emphasize the importance of having an intimate relation with God. It is important to have an intimate relationship with God in order to conquer the pornograph.

기독대학생의 가정적 자아존중감이 노인 부양의식에 미치는 영향 -영적 안녕감과 불안의 매개효과를 중심으로-

전요섭 ( Jo Seph Jeon ) 기독교학문연구회 2012 신앙과 학문 Vol.17 No.3

이 연구는 기독대학생의 가정적 자아존중감이 노인 부양의식에 미치는 영향을 분석하고, 영적안녕감과 불안의 매개효과를 검증하고자 하는데 그 목적을 갖는다. 연구대상은 서울 및 경기 지역에 위치한 4개 대학에 재학중에 있는 학생과 10개 교회에 출석하는 대학생 총 432명이 조사에 참여하였다. 분석은 SPSS 19 통계 프로그램과 AMOS 7.0을 이용하여 측정모형을 검증하였다. 이 연구의 목적을 이루기 위해서 두 가지 연구문제를 제기했다. 첫째, 기독대학생의 가정적 자아존중감은 노인 부양의식에 영향을 미치는가? 둘째, 기독대학생의 가정적 자아존중감과 노인 부양의식 간의 관계에서 영적 안녕감과 불안은 매개효과를 갖는가를 살펴보는 것이었다. 이 연구문제에 대한 결론은 다음과 같다. 첫째, 노인 부양의식에는 가정적 자아존중감, 영적안녕감, 불안 모두 유의미한 상관관계를 가지고 있는 것으로 나타났다. 특히, 영적 안녕감 (r=.348, p<.001)의 상관이 가장 높은 것으로 나타났다. 또 가정적 자아존중감과 불안은 음(-)의 상관관계를 가지고 있어서 가정적 자아존중감이 높을수록 불안이 낮은 것을 알 수 있었다. 둘째, 가정적 자아존중감이 노인 부양의식에 미치는 영향에서 영적 안녕감과 불안의 매개효과를 검증하였다. 그 결과, 가정적 자아존중감은 영적 안녕감(.386, p<.001)과 불안(-.146, p<.01)에 직접적인 영향을 미쳤다. 또 가정적 자아존중감은 노인 부양의식에 직접적 영향(8.082, p<.001)과 간접적영향(1.218, p<.001) 모두 미치는 것으로 나타났다. 이는 가정적 자아존중감이 노인 부양의식에 미치는 영향에서 영적 안녕감과 불안이 매개효과를 갖는다는 것을 의미한다. 본 연구의 의의는 가정적 자아존중감이 노인 부양의식에 미치는 영향에서 영적 안녕감과 불안이 매개한다는 것을 밝힘으로써 노인 부양에 대한 사회적 문제에 유용한 시사점을 제공했다는데 있다. 또한 본 연구는 자라나는 청소년들로 하여금 가정적 자아존중감을 충분히 갖도록 부모의 적절한 양육과 돌봄을 준다면 노인 부양에 대한 사회적 문제해결의 실마리를 제공한다는 점에서 의미가 있다 하겠고, 자녀를 신앙 안에서 절대자와의 수직적 관계와 자신, 이웃, 환경과의 수평적 관계의 조화를 이루도록 양육하는 것이 노인 부양의식을 높이는 길임을 시사하고 있다. 이 연구는 가정적 자아존중감과 노인 부양의식 간 관계에서 영적 안녕감과 불안의 매개효과를 검증한 것으로 기독대학생의 노인공경 및 효도에 대한 개인상담, 가족상담에 대한 근거와 시사점을 제공한다는데 의의가 있다. The purpose this study is to examine the correlation between the home self-esteem of Christian college & university students and the attitudes of care-giving for the elderly, and the effects of the spiritual well-being and anxiety as mediating agents on them, The participants are 432 student of four colleges and univeristy students & of 10 churches, The data was analyzed by SPSS 19 and AMOS 7.0. The study showed the following results. First, there are significant correlations among home self-esteem, spiritual well-being and anxiety on the attitudes of care-giving for the elderly. Especially, the spiritual well-being(r=.348, p<.001) has the highest correlation to the attitudes of supporting the elderly, Also the home self-esteem and anxiety have negative correlations with one another, The higher the self-esteem, the lower the spiritual anxiety level. Second, all the demographic variables are significantly affected by the assurance of personal salvation. Most of the participants claimed that they had the assurance of salvation, but some who do not have the assurance of salvation shoed significantly high level of spiritual anxiety. Third, there was significant effect of spiritual well-being and anxiety as mediating agents on the attitudes of supporting the elderly. The result shows that self-esteem affect significantly both on spiritual well-being (.386, p<.001) and anxiety (-.146, p<.01). Also, the self-esteem affected on the attitudes of care-giving for the elderly both directly (8.082, p<.001) and indirectly (1.218, p<.001). This result tells us that spiritual well-being and anxiety have significant effect as mediating agents in terms of the effect of self-esteem on the attitudes of care-giving for the elderly. Fourthly, the researcher ran the multi-group analysis to see if there was any difference in structural shape according to one`s personal assurance of salvation. The result shows that those who had the assurance of salvation showed higher correlation between the home self-esteem and the attitudes of care-giving for the elderly than those who did not have the assurance of salvation, In most variables, those who had the assurance of salvation had significant effect on the demographical analysis in general. The significance of this study is that it gives meaningful data for the personal and family counseling for the college students in terms of home self-esteem, attitudes of care-giving for the elderly according to their spiritual well-being and anxiety.

인공지능과 스테레오 비전을 이용한 실시간 물체 궤적 예측

양요셉(Yo Seph Yang),안성민(Seong Min Ahn),김성현(Seong Hyeon Kim),최동일(Dongil Choi) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.5

멀티비전을 이용한 실시간 테니스 공 궤적 및 낙하지점 예측방법

양요셉(Yo Seph Yang),최동일(Dongil Choi) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11

Recently, the development of robots that can exercise and play sports with humans is actively progressing. In sports such as tennis and table tennis, it is important to predict the trajectory of a moving ball to receive the ball. The problem of predicting the trajectory of a ball using robot camera images is a topic that is being actively studied in the field of computer vision. In this paper, we introduce a tennis ball trajectory prediction method using a multi-vision system. In order to predict the trajectory of the ball, the identification of the position and speed of the tennis ball must be prioritized. Our multi vision system sets up two cameras and estimates ball position and landing point in real-time through object detection. The performance of the proposed method was evaluated through Gazebo simulation. As a result of predicting landing points for 500 samples with a tennis ball speed of 65 to 90 km/h, the x-axis error MAE is 0.3 m, the RMSE is 0.406 m, the y-axis error MAE is 0.065 m, and the RMSE is 0.119 m.

머신비전을 이용한 테니스 공 검출 및 추적 시스템

양요셉(Yo Seph Yang),이채현(Chae Hyun Lee),최동일(Dong Il Choi) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.5

Remote-Controlled Magnetic Sponge Balls and Threads for Oil/Water Separation in a Confined Space and Anaerobic Reactions

Lee, Yo Seph,Lee, Han Bi,Koo, Hye Young,Choi, Won San American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.43

<P>Magnetic sponges (MSs) and magnetic threads with hydrophilic and hydrophobic characteristics that can perform remote-controlled oil/water separation in a confined space and anaerobic reactions were prepared. For large amounts of water or oil, trainlike hydrophilic or hydrophobic MSs composed of more than three sponge balls moved as a group and quickly absorbed the water or oil droplets in oil or water by magnetic manipulation from outside of the tube. For the removal of heavy oils below the water in three-liquid multiphase solutions, the hydrophobic MS balls were moved to the heavy oil below the water, absorbed some of the heavy oil, and returned to the light oil layer to deliver the heavy oil by means of an external magnetic field. The mixed oils floating on the water were easily removed by a suction pump once the heavy oil had been completely delivered to the light oil layer via the round-trip process. Furthermore, our approach was demonstrated for use in an anaerobic reaction system due to the strong magnetic property that transfers the reactants/products, the porous structure providing a reaction site, and the prewetting ability containing the reactants/products of the MSs and the oil layer prohibiting oxygen contact.</P> [FIG OMISSION]</BR>

가족문제해결을 위한 부모-자녀 간 의사소통과 자아존중감이 자살위험성에 미치는 영향: 기독교 청소년과 비기독교 청소년 비교

전요섭 ( Jo Seph Jeon ),이진영 ( Jin Young Lee ) 기독교학문연구회 2011 신앙과 학문 Vol.16 No.2

본 연구는 청소년이 지각한 부모-자녀 간 의사소통과 자아존중감과의 관계를 알아보고, 기독교 청소년 및 비기독교 청소년이 지각한 부모와의 의사소통과 자아존중감이 자살위험성 예측에 미치는 영향을 알아보고자 실시되었다. 자료 수집은 서울과 경기도에 소재한 4개 고등학생에 재학 중인 남녀 고등학생 355명을 대상으로 설문조사를 통해 이루어졌다. 측정도구는 맥코빈(M. McCubbin), 맥코빈(H. McCubbin)과 톰슨(A, Thompson, 1996)이 제작한 가족문제해결을 위한 의사소통(Family Problem Solving Communication) 검사지, 하레(Bruce R. Hare, 1985)가 제작한 자아존중감 척도(Hare Self-Esteem Scale), 고효진, 김대진, 이홍표(2000)가 개발한 청소년 자살위험성 예측 검사지(Suicide Probability Scale for Adolescents: SPS-A)를 시용하였다. 자료분석은 SPSS 12.0 프로그램을 사용하여 빈도분석, Pearson 적률상관분석, 단계적 중다회귀 분석(multiple regression)을 실시하였다. 연구결과는 다음과 같다. 첫째, 부모와의 긍정형 의사소통은 자아존종감과 정적 상관이 있었고, 부모와의 부정형 의사소통은 자아존중감과 부적 상관이 있었다. 둘째, 기독교 청소년의 자살위험성 예측에 영향력을 미치는 변인은 학교자존감, 또래자존감, 가정자존감, 모 부정형 의사소통 순으로 나타났다. 그리고 비기독교 청소년의 자살위험성 예측에 영향력을 미치는 변인은 가정자존감, 학교자존감, 또래자존감, 부 부정형 의사소통 순으로 나타났다. This research is to clarify the relationship of parent-adolescent communication, self-esteem and family problem solving communication, self-esteem affects Christian adolescent`s suicide probability and non-Christian adolescent`s suicide probability. The object of research is selected random of 355 students from 4 high schools located in Seoul and Kyongkido. The tools of investigation were (1) Family problem solving communication scale by Marilyn McCubbin, Hamilton McCubbin, and Anne Thompson. (2) Hare Self-Esteem Scale by Bruce R. Hare. (3) Suicide Probability Scale for Adolescents by Go Hyojin, Kim Daijin, Lee Heungpyo. The statistical methods were frequency analysis, pearson`s correlation, and multiple regression analysis using SPSS 12.0 in statistic center of Sungkyul University. The results of this study were as follows; firstly, parent-adolescent affirming communication was positively correlated with self-esteem. Parent-adolescent incendiary communication was negatively correlated with self-esteem. Secondly, in influence of suicide probability by parent-adolescent communication and self-esteem that Christian adolescent and non-Christian adolescent who cognized was statistically significant influence. In order of school self-esteem, peer self-esteem, home self-esteem, mother incendiary communication had much effect on the suicide probability of Christian adolescent. Also, lastly, In order of home self-esteem, school self-esteem, peer self-esteem, father incendiary communication had much effect on the suicide probability of non-Christian adolescent.

테니스 로봇을 위한 공 추적 및 궤적 예측 시스템

양요셉(Yo Seph Yang),안성민(Seongmin Ahn),김성현(Seong Hyeon Kim),최동일(Dongil Choi) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11

Recently, as the service robot market has grown, robots have emerged in various fields such as industry, service, and sports. In the field of sports, robots that can play with humans such as Forpheus, Robomintoner, and Ldric have been developed. These robots can act as coaches by providing human race data as well as athletic events. We developed a vision system that detects balls and predicts trajectories to develop tennis sports robots. In this paper, we introduce ball detection artificial neural networks and ball trajectory prediction using stereo vision. As a result, the accuracy of the neural network for ball detection in actual tennis images reaches 81%. The ball trajectory prediction error in Gaz ebo simulation is 29.6 cm in the x-axis, 7.2 cm in the y-axis, and 11.7 cm in the z-axis on average.