지오셀의 설계 및 시공 : 설계

김경모 한국지반신소재학회 2024 한국지반신소재학회 학술발표회 Vol.2024 No.4

토목섬유의 보강효과를 고려한 사면안정해석

김경모,김홍택,이형규 한국지반환경공학회 2005 한국지반환경공학회논문집 Vol.6 No.1

Generally, to evaluate a slope stability of the geosynthetic reinforced soil slope, the modified version of limit equilibrium method can be used. In most cases, resisting effects of reinforcement are dealt with considering an increased shear strength on the potential slip surface. However, it is not clear that the methods satisfy all three equilibrium equations. In this study, the new slope stability analysis method in which not only reinforcing effects of geosynthetics can be considered but also all three equilibrium equation can be satisfied is proposed. A number of illustrative examples, including published load test of large-scale reinforced retaining wall and centrifuge model tests on the geotextile reinforced soil slopes, are also analyzed. As a result, it is shown that the newly suggested method produces a relatively accurate factor of safety. 토목섬유로 보강된 사면의 안정성해석을 위해서 보강재의 효과를 고려할 수 있도록 수정된 한계평형해석법을 사용하는 것이 일반적이다. 그러나 대부분의 경우 보강재의 효과는 활동면상에서 증가된 전단저항력으로 고려되어 전체 활동토체에 대한 평형방정식의 만족여부는 명확하지 않다. 본 연구에서는 보강재의 저항력을 포함한 활동토체의 힘과 모멘트의 평형방정식을 모두 만족할 수 있는 사면안정해석법을 제안하였으며, 보강토 옹벽에 대한 재하시험 결과와 보강사면에 대한 원심모형시험결과를 포함한 다양한 사례에 대한 해석이 수행되었다. 그 결과 본 연구에서 제안한 방법에 의하여 수정된 사면안정해석법에 의하여 계산된 안전율의 차이는 ±4% 이내로 비교적 정확한 안전율을 제공해 주는 것으로 나타났다.

폭력성 게임 이용과 이용자의 물리적 폭력성

김경모,이대영 사단법인 인문사회과학기술융합학회 2019 예술인문사회융합멀티미디어논문지 Vol.9 No.12

Research on the violence of video game has been focused mostly on the inducement of violence in the game or user 's psychology despite the long period of time. In this paper, we investigated that how much realistic game characters in a fighting game could affect game player’s degree of presence, psychological and physical aggression (with EMG) and state hostility. We found that players playing with the realistic violent character will physically behave more aggressive than when they play with the unrealistic non-violent game character. Based on the reality of the game, we compared the average of presence, psychological aggression, physical aggression, and hostility through independent t-tests. As a result, there was no difference in presence, psychological aggression, and hostility, but there was a significant difference in physical aggression. The reality of the game did not have a direct effect on the general psychological factor test, but it was confirmed that it had an effect on the actual behavior. 학계에서의 비디오 게임의 폭력성 연구는 오랜 기간에도 불구하고 대부분이 게임 내 폭력성 유발이나 이용자의 심리에 집중해 있고, 실제 물리적 행동 양상에 대한 연구는 부족하였다. 이에 본 연구에서는 게임 내 캐릭터의 사실적 표현의 차이에 따른 게임 이용자의 플레이를 근육의 사용량 (EMG)를 통해 측정함으로써, 게임의 사실적인 표현이 게임 내에서 뿐만이 아닌 현실에서의 폭력성을 얼마나 반영하는가 판단 할 수 있는 근거를 마련하고자 하였다. 게임의 현실성을 기준으로 실존감, 심리적 공격성, 물리적 공격성, 그리고 적대감의 평균을 독립 t-test를 통해 비교해보았다. 그 결과 실존감과 심리적 공격성, 적대감의 차이는 발견되지 않았으나 물리적 공격성의 경우 유의미한 차이를 나타내며 현실적인 아바타가 비현실적 아바타에 비해 높은 물리적 공격성을 나타냈다. 게임의 현실성 여부는 일반적 심리요인검사에서 직접적인 영향을 나타내지 못했지만, 실질적인 행동경향에서 영향을 나타내고 있음을 확인하였다.

위험사회와 언론 보도 프레임분석

김경모,황유선,오소현 한국방송학회 2009 한국방송학회 학술대회 논문집 Vol.2009 No.4

보정 공정을 포함한 U-채널 성형 공정에서 스프링백의 강건 설계

김경모,인정제 한국기계기술학회 2018 한국기계기술학회지 Vol.20 No.1

The most time consuming job in the sheet metal forming process is compensating for springback. Factors such as uneven material properties and process conditions generate noise, which in turn create springback. The springback is very sensitive to the process and noise conditions, and the main effects of the design variables cannot be obtained from mean analysis. Therefore, to achieve minimal springback, an effective design countermeasure must be put in place to reduce noise effects. In this study, two robust design methods toachieve minimal springback in U-channel forming, including compensation process, are proposed. The effectiveness of the proposed methods is shown with an example of the sidewall curl springback. The proposed methods consistently outperform our previous work, indicating that the complex method is more preferable to the mean analysis, if there is no evidence of additivity of effects.

지방정부간 갈등-협력 기제와 영향요인 : 정읍 광역 화장시설 건립사업을 중심으로

김경모,이종대 한국비교정부학회 2015 한국비교정부학보 Vol.19 No.4

Since chiefs of self-governing body were elected by resident direct vote in1995, We face difficulties in resolving inter-governmental conflict. especially, when NIMBY syndrome occurs in the location of public facilities, the effective conflict management system is very important. The purpose of this study is to find out the influential factors of the conflict and cooperation in the process of the selection of the location of public facilities. In particular, this study looks at how the mechanism of conflict and cooperation works in the inter-governmental collective action. Based on the literature review, this study chooses three variables: policy problem, policy environment, policy process. This study investigates the degree of satisfaction of three variables. After that, We examines the mechanism of conflict and cooperation in the respect of total conflict quantity. The result of analysis is that three variables have great effect on the conflict of the funeral facilities, and the level of conflict determines the circulation mechanism of conflict and cooperation. This study also find that circulation mechanism is considerably path-dependent and irreversible.

원인특성 허용차의 안정성설계

김경모 金烏工科大學校 1993 論文集 Vol.14 No.-

Determining the tolerance of materials and parts for the given specification of finished goods is still longstanding problem to be solved in engineering department. The method of determining engineering tolerance proposed by Taguchi is well known for its simple concept and so can be easily used in practical fields. In reality, three major factors to determine the tolerance(the cost factors, parameters for the distribution of the cause-characteristics, and the relationship between the cause-characteristics and the object-characteristics) are uncertain yet. This study proposes a robust design procedure to determine the tolerance of the cause-characteristics. A hypothetical problem is analyzed to show the usefulness of the proposed procedure.

원자재 Lot Splitting을 고려한 단일제품 생산재고모형

김경모 慶尙大學校 1986 論文集 Vol.25 No.2

An integrated production-inventory model with raw material lot splitting is analyzed. The model incorporates the problem of determining the production batch size and the procurement policy for the deteriorating raw material. It is found that the production-inventory system is sensitive to raw material lot splitting. When The deteriorating constants are quite large and/or the ordering costs of raw material are small relative to the other system costs, a substantial cost savings would be achieved if we raw material lot splitting.

단순 지지된 원형평판의 자유진동

김경모 동의공업대학 1998 論文集 Vol.24 No.1

This paper describes an experimental study of the low frequency transverse vibration modes of a thin circular flat plate that is simply supported at three or four points on the circumference, carried out by using time-averaged holographic interferometry. The main purpose of the experimental investigation was to determine the natural frequencies and the corresponding mode shapes of the circular plate with three or four simple support points. Natural vibration modes exceeding 50 have been obtained for the two kinds of plates. The natural frequencies obtained have been expressed in terms of a dimensionless frequency parameter. The analytical solutions for the vibrational modes of a thin circular flat plate that is simply supported at three or four points on the circumference are presented. The mode shapes and corresponding eigen values are also obtained. Results show that the modes can be grouped into four different types depending on the manner by which they receive the pressure at the support points. The experimental results are compared with the present theoretical values.

온라인 뉴스 확산과 여론형성 : ‘박경신 블로그 논란’ 뉴스 사례분석

김경모 한국언론학회 2012 한국언론학회 학술대회 발표논문집 Vol.2012 No.10