항공사진을 이용한 지적측량

조진구 한국지적학회 1982 韓國地籍學會報 Vol.4 No.-

존슨 정권 후반기의 한미관계 : 북한의 대남도발에 대한 한미간의 인식 차이를 중심으로 Dissensions between the two allies toward the North Korean provocations against South Korea

조진구 경남대학교 극동문제연구소 2003 한국과 국제정치 Vol.19 No.3

During his visit to Korea in November 1966, President Johnson appreciated South Korea's cooperation to his Vietnam policy. He reaffirmed to assist to defeat North Korean attack against South Korea. This was the peak and the symbol of a friendly US.-Korean relationship, but North Korea began to heighten tensions along the DMZ before and after President Johnson's visit to Korea. The South Korean Government has agreed to send one light division to South Vietnam on the grounds that this might increase South Korean security against North Korea. But, less than two days after the raid on the Blue House, North Korean forces seized the U.S. intelligence-gathering vessel USS Pueblo on January 23 1968. The U.S. failure to act forcefully regarding the Pueblo incident, and refusal to strike North Korea in retaliation for assassination attempt on President Park, raised questions about the U.S. security commitment. President Park decided not to send any more combat troops to Vietnam, because he came to realize that the US. security commitment to Seoul would depend not on Korean hopes and expectations or threat level on the peninsula, but on the perception of high officials in Washington. The two allies, in the end, came to review their own policy each other.

탄소성 모델에 의한 포물선 아치의 극한 내하력 평가

조진구,박근수 한국농공학회 2002 한국농공학회논문집 Vol.44 No.3

The advent of high-strength steel has enabled the arch structures to be relatively light, durable and long-spanned by reducing the cross sectional area. On the other hand, the possibility of collapse may be increased due to the slender members which may cause the stability problems. The limit analysis to estimate the ultimate load is based on the concept of collapse mechanism that forms the plastic zone through the full transverse sections. So, it is not appropriate to apply it directly to the instability analysis of arch structures that are composed with compressive members.The objective of this study is to evaluate the ultimate load carrying capacity of the parabolic arch by using the elasto-plastic finite element model. As the rise to span ratio (h/L) varies from 0.0 to 0.5 with the increment of 0.05, the ultimate load has been calculated for arch structures subjected to uniformly distributed vertical loads. Also, the visco-elasto-plastic analysis has been carried out to find the duration time until the behavior of arch begins to show the stable state when the estimated ultimate load is applied.It may be noted that the maximum ultimate load of the parabolic arch occurs at h/L=0.2, and the appropriate ratio can be recommended between 0.2 and 0.3. Moreover, it is shown that the circular arch may be more suitable when the h/L ratio is less than 0.2, however, the parabolic arch can be suggested when the h/L ratio is greater than 0.3.The ultimate load carrying capacity of parabolic arch can be estimated by the well-known formula of kEI/L3 where the values of k have been reported in this study. In addition, there is no general tendency to obtain the duration time of arch structures subjected to the ultimate load in order to reach the steady state. Merely, it is observed that the duration time is the shortest when the h/L ratio is 0.1, and the longest when the h/L ratio is 0.2.

탄성지반상에 놓인 철근콘크리트 축대칭 쉘의 정적 및 동적 해석 (III) -비선형 정적거동을 중심으로-

조진구 한국농공학회 1997 韓國農工學會誌 : 전원과 자원 Vol.39 No.3

In all inelastic deformations time rate effects are always present to some degree. Whether or not their exclusion has a significant influence on the prediction of the material behaviour depends upon several factors. In the study of structural components under static loading conditions at normal temperature it is accepted that time rate effects are generally not important. However metals, especially under high temperatures, exhibit simultaneously the phenomena of creep and viscoplasticity. In this study, elastoplastic and elasto-viscoplastic models include nonlinear geometrical effects were developed and several numerical examples are also included to verify the computer programming work developed here in this work. Comparisons of the calculated results, for the elasto-viscoplastic analysis of an internally pressurised thick cylinder under plane strain condition, have shown that the model yields excellent results. The results obtained from the numerical examples for an elasto-viscoplastic analysis of the Nuclear Reinforced Concrete Containment Structure(NRCCS) subjected to an incrementally applied internal pressure were summarized as follows : 1. The steady state hoop stress distribution along the shell layer of dome and dome wall junction part of NRCCS were linearly behave and the stress in interior surfaces was larger than that in exterior. 2.However in the upper part of the wall of NRCCS the steady state hoop stress in creased linearly from its inner to outer surfaces, being the exact reverse to the previous case of dome/dome-wall junction part. 3.At the lower part of wall of NRCCS, the linear change of steady state hoop stress along its wall layer began to disturb above a certain level of load increase.

탄성지반상에 놓인 철근 콘크리트 축대칭 쉘의 정적 및 동적 해석(IV) -축대칭 쉘의 동적 응답에 대한 철근의 영향을 중심으로-

조진구 한국농공학회 1997 韓國農工學會誌 : 전원과 자원 Vol.39 No.4

Dynamic loading of structures often causes excursions of stresses well into the inelastic range, and the influence of the geometric changes on the dynamic response is also significant in many cases. Therefore, both material and geometric nonlinearity effects should be considered in case that a dynamic load acts on the structure. A structure in a nuclear power plant is a structure of importance which puts emphasis on safety. A nuclear container is a pressure vessel subject to internal pressure and this structure is constructed by a reinforced concrete or a pre-stressed concrete. In this study, the material nonlinearity effect on the dynamic response is formulated by the elasto-viscoplastic model highly corresponding to the real behavior of the material. Also, the geometrically nonlinear behavior is taken into account using a total Lagrangian coordinate system, and the equilibrium equation of motion is numerically solved by a central difference scheme. The constitutive relation of concrete is modeled according to a Drucker-Prager yield criterion in compression. The reinforcing bars are modeled by a smeared layer at the location of reinforcements, and the steel layer model under Von Mises yield criteria is adopted to represent an elastic-plastic behavior. To investigate the dynamic response of a nuclear reinforced concrete containment structure, the steel-ratios of 0, 3, 5 and 10 percent, are considered. The results obtained from the analysis of an example were summarized as follows 1. As the steel-ratio increases, the amplitude and the period of the vertical displacements in apex of dome decreased. The Dynamic Magnification Factor(DMF) was some larger than that of the structure without steel. However, the regular trend was not found in the values of DMF. 2. The dynamic response of the vertical displacement and the radial displacement in the dome-wall junction were shown that the period of displacement in initial step decreased with the steel-ratio increases. Especially, the effect of the steel on the dynamic response of radial displacement disapeared almost. The values of DMF were 1.94, 2.5, 2.62 and 2.66, and the values increased with the steel-ratio. 3. The characteristics of the dynamic response of radial displacement in the mid-wall were similar to that of dome-wall junction. The values of DMF were 1.91, 2.11, 2.13 and 2.18, and the values increased with the steel-ratio. 4. The amplitude and the period of the hoop-stresses in the dome, the dome-wall junction, and the mid-wall were shown the decreased trend with the steel-ratio. The values of DMF were some larger than those of the structure without steel. However, the regular trend was not found in the values of DMF.

포스터 발표 - 생물공학분과 / 펄프 , 제지 , 피혁분과 / 유지 , 계면활성제분과 / 접착제 , 도료 잉크분과 / 정밀화학분과 : Combinatorial library 를 위한 지지체로서 구형인 PS - co - PEG 공중합체의 합성

조진구,이윤식 한국공업화학회 1997 한국공업화학회 연구논문 초록집 Vol.1990 No.3

특집 - 탈석유화시대를 위한 재생 및 지속사용 가능 자원 유래 화학소재

조진구,Jo, Jin-Gu (사)한국포장협회 2011 包裝界 Vol.219 No.-

환경규제 대응형 신 화학소재 합성 및 평가기술

조진구,김경만,나재식,정근우,이동구 한국고분자학회 2008 고분자 과학과 기술 Vol.19 No.6

동아시아 철도네트워크의 가능성

조진구,서보혁,안병민,박종철,이철우,이웅현,이수석,이군호 교양사회 2006 민족연구 Vol.0 No.28

일본회의의 역사인식과 교육관: 무라야마 담화 정신에 대한 도전

조진구 국회입법조사처 2018 입법과 정책 Vol.10 No.2

The issues of historical perception is a continuous source of contention between Japan and its Asian neighbors. On the 50th anniversary of the war’s end, in August 15 1995, Prime Minister Tomiichi Murayama released the so-called Murayama Statement, which was based on a Cabinet decision, expressing “feelings of deep remorse” and a “heartfelt apology” for Japan’s “colonial rule and aggression. People throughout Asia welcomed Prime Minister Murayama’s apology, but the conservatives or the ring-wing organizations criticize the Murayama Statement as a self-destructive historical perspective. Th Nippon Kaigi (Japanese conference), the largest right-wing organization in Japan, is a major supporter of the current Abe administration. In this paper, I will analyze the meaning and spirit of the Murayama Statement, historical perception and educational viewpoint of the Noppon Kaigi, and the correlations between Nippon Kaigi and Abe administration’s educational policy. 역사인식 문제는 일본 외교의 중요한 과제다. 1995년 8월 15일 ‘식민지 지배와 침략’에 대하여 ‘통절한 반성과 마음으로부터의 사죄’를 표명했던 무라야마 담화는 과거 역사에 대한 가장 전향적인 일본 정부의 입장 표명으로 높은 평가를 받아 왔다. 그러나 일본사회 일각에서는 무라야마 담화를 ‘자학사관’이라고 비판하는데, 대표적인 단체가 일본회의다. 일본회의는 과거 일본이 수행했던 전쟁을 침략전쟁이 아니라 아시아 국가들을 해방시키기 위한 정의로운 전쟁이었다고 정당화하면서 무라야마 담화 정신에 도전하고 있다. 이 논문에서는 무라야마 담화의 성립 과정과 그것이 일본과 주변국과의 관계에서 어떤 의미를 가지고 있는가를 살펴본 뒤 아베 정권의 교육정책과 일본회의의 연관성을 고찰함으로써 역사인식과 관련한 일본 국내 상황을 어떻게 인식하고 대응해야 하는지에 대해 약간의 제언을 하고자 한다.