• 수산해양교육연구
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• 제26권4호
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• pp.705-716
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• 2014

This study starts from a question about the expectation that government policy reduces the educational gap by introducing digital textbooks. In addition, we try to figure out how to minimize the problems that will occur when digital textbooks are introduced and fully adopted. The purpose of this study is exploring the possibility that suing digital textbook deepens learning gap among students. Researchers are discussed that the gap between 'information' haves' and 'information' have-nots' and between 'the competent user' and 'the incompetent user' increase difference between 'knows' and 'know-nots' on the socio-economic class. These difference are likely to imply that using digital textbook is deepening the educational gap.

• 대한족부족관절학회지
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• 제24권4호
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• pp.161-164
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• 2020

A peroneal dislocation is a rare disease that is often misdiagnosed as a simple sprain and can be treated inadequately in the acute phase. For this reason, it is important to have an appropriate diagnosis in the early stages because it can progress to chronic and recurrent conditions. Surgical treatment is considered mainly when progressing to chronic recurrent dislocation. Recently, patients with an acute peroneal dislocation tend to prefer surgical treatment, so accurate initial diagnosis and management are very important. This paper reports a case of chronic recurrent peroneal tendon dislocation in both ankle joints, which was treated by a superior peroneal retinaculum reconstruction and a groove deepening procedure.

• 화약ㆍ발파
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• 제25권2호
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• pp.71-78
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• 2007

국내에서 실시하늘 수중발파의 경우 파리교각 건설을 위해 실시되는 우물통발파와 항만증심 준설 또는 가스관로 개설을 위한 굴착에 적용되고 있다. 우물통발파의 경우 작업과정은 수직구 발파작업과 동일하며 물을 채운 후 발과 하는 것이 다르다. 그러나 수중 증심 공사의 경우 바다위의 바지에서 천공 및 장약 준비작업, 결선작업이 이루어지고, 장약 및 전색작업은 전문 다이버에 의해 수중에서 이루어진다. 그러므로 수중발파작업은 같은 작업이라도 신중하고 치밀한 계획이 필요하다. 본 사례는 8,500TEU급 초대형 콘테이너 선박의 입항 가능성에 대비, 선박의 안전 운항을 위한 부산 신항 중심 공사에서 에멀젼폭약과 비전기뇌관을 사용하여 굴착 현장에 근접하여 위치한 무인등대에 대한 피해를 최소화 하면서 주변의 환경성 및 진동의 영향을 고려하여 수중발파를 실시하였다. 이 사례를 통하여 앞으로 에멀젼폭약과 비전기뇌관을 사용하여 수중발파를 하고자 하는 현장에 민은 도움이 될 것으로 예상된다.

• Geomechanics and Engineering
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• 제27권5호
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• pp.447-463
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• 2021

Caisson-type structures are widely used as quay walls in coastal areas. In Korea, for a long time, many caisson-type quay walls have been constructed with a low front water depth. These facilities can no longer meet the requirements of current development. This study developed a new technology for deepening existing caisson-type quay walls using grouting and rubble mound excavation to economically reuse them. With this technology, quay walls could be renovated by injecting grout into the rubble mound beneath the front toe of the caisson to secure its structure. Subsequently, a portion of the rubble mound was excavated to increase the front water depth. This paper reports the results of an investigation of the seismic behavior of a renovated quay wall in comparison to that of an existing quay wall using centrifuge tests and numerical simulations. Two centrifuge model tests at a scale of 1/120 were conducted on the quay walls before and after renovation. During the experiments, the displacements, accelerations, and earth pressures were measured under five consecutive earthquake input motions with increasing magnitudes. In addition, systematic numerical analyses of the centrifuge model tests were also conducted with the PLAXIS 2D finite element (FE) program using a nonlinear elastoplastic constitutive model. The displacements of the caisson, response accelerations, deformed shape of the quay wall, and earth pressures were investigated in detail based on a comparison of the numerical and experimental results. The results demonstrated that the motion of the caisson changed after renovation, and its displacement decreased significantly. The comparison between the FE models and centrifuge test results showed good agreement. This indicated that renovation was technically feasible, and it could be considered to study further by testbed before applying in practice.

• 대한족부족관절학회:학술대회논문집
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• 대한족부족관절학회 2008년도 추계학술대회 및 총회
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• pp.29-29
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• 2008

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
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• pp.546-550
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• 1993

Three basic experiments in agricultural machinery management , strengthening the construction of socialized service system, facilitating the two-level management system in rural areas and carrying through the principle of " paid service ' are described and the main methods of strengthening agricultural machinery management are developed in this paper.aper.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2009년도 학술발표대회
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• pp.27-31
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• 2009

• 한국지역사회생활과학회지
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• 제18권4호
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• pp.555-567
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• 2007

The purpose of this study was to test the mediating effects of self-esteem and empathy on university students' motivation for parenthood and their definition of parenthood. Participants were 1,492 students (male 581, female 898) from 19 universities throughout Korea. Results were: (1) The definition of parenthood was explained for motivation of parenthood (male $7{\sim}27%$, female $4{\sim}24%$) and empathy was explained for all the subfactors of motivation of parenthood except 'motivation for traditional norms' (male $4{\sim}16%$, female $2{\sim}13%$). Self-esteem was not explained as motivation of parenthood. (2) There was no mediating effect from self-esteem on motivation for parenthood or the definition of parenthood in any of the students. (3) There was a partial mediating effect of empathy on motivation of parenthood and the definition of parenthood. In male students, there were mediating effects in 'motivation for strengthening biological family ties', 'altruistic emotional motivation', and 'motivation for deepening marital bonds and perpetuating one's self'. In female students, there were mediating effects in 'motivation for strengthening biological family ties' and 'motivation for deepening marital bonds and perpetuating one's self'.

• 디자인학연구
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• 제9권
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• pp.701-712
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• 1994

We are in the process of the deepening of the informationalized society. Such a phenomenon(of deepening of the informationalized society) means that human being is surrounded by a linguistic or semiological environment instead of realistic experience. And it is concerned with the visual design composed by the visual languages and semiotics of Arts. Because the visual design is a kind of the linguisticsmion using the visual formation. This penomena necessarily brings the expansion of the quatity of information and accompanies the simplification of messages. Therefore when we apply the simplicity resulting from the ideality of KYEORE painting(the folk Art of Korea), it can be cotribute to those who should be in the center of semiological environment more deeply as a source to maximize the effect of communication, which is the conclusion of this study. In sort, the characteristics of our KYEORE painting is the ideal expression. There are found not a few problems such as the depiction of forms, the perspective representation, the chiaroscuro, the expression of material if we evaluate them from the western formative viewpoint. But the depiction of the fact is less direct than the ideal expression itself, is likely to be much complicated, and can be far away from the world of reality. Because it is just the first step for satisfying the ideal images in man. In the composition of KYEORE painting is dominated by the rules nonprescription of time amd place, colloquialism of the meaning, distinction maximization. They are all the compositive characteristics resulting from the ideality. If these characteristics are modulated intelligently to the current thoughts, they will help to build the new visual communication system of Korea which has more direct and fast absorption force.

• 한국정보처리학회논문지
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• 제2권3호
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• pp.354-363
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• 1995

본 논문은 목적 상태를 구성하는 부분목적들 사이의 선취관계를 이요하는 새로운 탐색방법을 제안한다.제안된 방법은 기존의 인공지능 탐색 방법에 부분 목적들간의 선취관계를 이용하여 분지인수(branching factor)와 탐색 공간의 깊이를 줄이고,직접 성취 가능한 극대 부분 목적과 필연적인 작업들을 즉시 실행하는 전략을 사용하여 효율성을 더육 제고 시킨다. 이러한 전략을 사용하는 제안된 알고리즘의 효율성을 이론적으로 보일 뿐 아니라,점증깊이 우선 탐색(DFID:Depth-First Iterative Deepening Search)방법과 IDA(Iteratice Deepening A)알고리즘에 제안도니 방법을 적용하여 얻은 변형된 탐색 알고리즘을 이용하는 로봇 계획 시스템을 구현하여 제안된 전략의 효율성을 실험적으로도 보인다.