패널 존의 비탄성거동과 설계강도

김동성,김기동,고만기,Kim. Dong-Sung,Kim. Kee-Dong,Ko. Man-Gi 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

The design strength of panel zones, which was based on Krawinkler model, was investigated by comparing it with existing test and FEM results. The design strength overestimates of the strength of panel zones with thick column flange while it matches well with the strength of panel zones with thin column flange. More extensive studies are needed to develop a mathematical model which can properly define the inelastic behavior of panel zones with various column flange thicknesses and to determine a more rational design strength.

IMF 시대의 통일논리와 안보논리

김동성 한국전략문제연구소 1999 전략연구 Vol.6 No.2

The national unification and national security policy of Kim Dae Jung Administration can he distinguished from previous administrations' in such two dimensions as environmental one and policy orientation. Decision-making environment reflects recent economic crisis while new policy orientation is characterized by the "Sunshine Policy", or the "Engagement Policy". The national security agenda has usually been placed on the foremost priority in the nation's contemporary history. Recent economic crisis, however, put the security interest aside, while DJ's engagement policy raises epistemological confusion on the basis of national security and unification policy. President Kim's engagement policy has a premise that attitude and behavior of North Korean leadership could he changed to ordinary one by continuous sunshining while national security policy of ROK is still based on the belief that North Korea is the main enemy that has a goal to 'communize' South Korea. The research goal of this paper is to examine the contradictory nature of present relationship between national security policy and engagement policy toward North Korea, aiming at a systemic understanding which is to be a logical basis for the prescription to solve the problems. The first area of discussion is related with controversial issues on the unification policy. The transitional situation leads us to confront with two dimensions of problem: epistemological one as well as a matter of practice. The most serious fact in epistemological dimension is the growing tendency that people begin to regard no longer the national security as being of the prime value. This problem is more or less caused by DJ's 'Sunshine Approach' and then it has made contention between 'state centered paradigm' and 'nationalistic paradigm'. At the same time, the process of national security policy decision making and execution has revealed itself far short of 'institutionalization'. The second area of discussion deals with logic of national security policy. There can be detected a number of controversies. Such questions as "national security for whom" and "which values" are among them. In addition, on the question of "sufficiency of security", "the source of threats", and "the means for security", controversial arguments make the present policy environment getting more complicated. In this context, some policy suggestions can be summarized as follows: 1) National security and unification policy should be systemized, from the decision making to execution, and all the process needs to be integrated as well Especially, national security policy requires the common belief on national goal and national ideology, then the concept of national interest and national objective needs to be shared by all the people. 2) New presidential leadership should be activated to maintain policy coherence while to control and harmonize effectively unification -security policy establishments. 3) As the hasty expectation for the South-North reconciliation and peaceful coexistence are not realistic, the top decision makers' prudence is needed in their evaluation process for the proper level of security arrangement. 4) There should be endeavors to secure sufficient deterrence capability for the short-run, while structuring solid basis for the long-run objective of peaceful coexistence. In this process, national consensus and supports are the prerequisite for attaining desirable goals.

컴퓨터 시뮬레이션을 통한 충격흡수시설의 개발

김동성,김기동,고만기,Kim,Dong-Sung,Kim,Kee-Dong,Ko,Man-Gi 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

The development of crash cushions is finally completed by full-scale vehicle crash tests. Since the current development of crash cushions is achieved by numerous repeated full-scale vehicle crash tests based on empirical and irrational methods, it requires a great amount of costs. In this research, the more rational procedure based on prototype design by static tests and computer simulation is suggested and it can minimize the number of full-scale vehicle crash tests.

축산분뇨 혐기소화 잔재물의 특성 및 초지 적용성 평가

김승민(Seung Min Kim),정웅기(Woong-gi Jung),성용주(Yong Joo Sung),안희권(Hee-Kwon Ahn),김동성(Dong Sung Kim),윤도현(Do-Hyun Yoon),김동섭(Dong-Seop Kim1),정광화(Hwa Gwang Jung) 한국펄프·종이공학회 2014 펄프.종이기술 Vol.46 No.3

기종저(氣腫疽)에 대(對)한 몇가지 항생물질(抗生物質) 치료시험(治療試驗)

김동성,차연호,Kim, Dong Sung,Cha, Youn Ho 대한수의학회 1964 大韓獸醫學會誌 Vol.4 No.1

In the treatment of mice Aureomycin, Oil penicillin, Achromycin, Ambrasynth and Terramycin were effective on the Black-leg disease when they were administered about 4 to 5 hours before the death of control animals. Synthomycetin, however, was observed to be effective when administered 8 hours or more before the control death. Streptomycin seemed to be rather less effective than Black leg antiserum. It was not effective at all when given 19 hours before the death of control animal although there was a delay of taking death by 5 hours in the treated group. As was in mice, Streptomycin was little effective in the treatment of calves, while other antibiotics showed fine efficacy on the diseased animals. The diseased animals, when given with anitibiotics 37 hours before the death of control showed the rise of temperature($41^{\circ}C$ or more), swelling and redness on the site of infection and then recovcred to normal stage. In the treatment of calves, Aureomycin only delayed the taking death of the deseased animals by 111 hours when administered 4 hours before the death of control animals. And other antibiotics, when given 4 hours before the death of control animals were effective, although the deseased animls developed symptoms such as hard breathing, anorexia and dropsical swellings. Oil penicillin was observed to be comparatively larger in its efficacy on the treatment of Black leg disease.

탐방취재-명공농장

김동성,Kim, Dong-Sung 대한양돈협회 1986 養豚 Vol.8 No.2

사출 성형된 일회용 카오스 마이크로 믹서의 개발: 나선형 라미네이션 마이크로 믹서 (I) - 디자인 및 수치 해석 -

김동성,이세환,권태헌,Kim Dong Sung,Lee Se Hwan,Kwon Tai Hun,Ahn Chong H. 대한기계학회 2005 大韓機械學會論文集A Vol.29 No.10

The flow in a microchannel is usually characterized as a low Reynolds number (Re) so that good mixing is quite difficult to be achieved. In this regard, we developed a novel chaotic micromixer, named Serpentine Laminating Micromixer (SLM) in the present study, Part 1. In the SLM, the higher level of chaotic mixing can be achieved by combining two general chaotic mixing mechanisms: splitting/recombination and chaotic advection. The splitting and recombination (in other term, lamination) mechanism is obtained by the successive arrangement of 'F'-shape mixing units in two layers. The chaotic advection is induced by the overall three-dimensional serpentine path of the microchannel. Chaotic mixing performance of the SLM was fully characterized numerically. To compare the mixing performance, a T-type micromixer which has the same width, height and length of the SLM was also designed. The three-dimensional numerical mixing simulations show the superiority of the SLM over the T-type micromixer. From the cross-sectional simulation results of mixing patterns, the chaotic advection effect from the serpentine channel path design acts favorably to realize the ideal lamination of fluid flow as Re increases. Chaotic mixing mechanism, proposed in this study, could be easily integrated in Micro-Total-Analysis-System, Lab-on-a-Chip and so on.

스프링클러 배관의 부식 특성과 대책에 관한 연구

김동성,조원철,김병선,이태식,Kim. Dong-Sung,Cho. Won-Cheol,Kim. Byung-Seon,Lee. Tae-Shik 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

This study is for the corrosion property of sprinkler pipe and the prevention solution. The main causes of corrosion are the deterioration of pipe and wrong installation of pipe. This study includes the property of stainless pipe that is widely used as sprinkler pipe and other kinds of pipe, the theory of corrosion procedure and the result of test that is performed to ascertain the advance degree of corrosion about `A` factory complex using pipe samples that were collected at designated point of each factory complex.

우기종저(牛氣腫疽)에 대한 예방약(豫防藥)과 항혈청(抗血淸)의 검정(檢定)을 위한 연구(硏究)

김동성,Kim, Dong Sung 대한수의학회 1968 大韓獸醫學會誌 Vol.8 No.2

Throughout the studies the following experimental results were summarized. 1. It was impossible to infect and kill the mice, weighing 10 to 12 gm, by inoculating 0.2ml of virulent Cl. chauvoei, diluted 1 to 10 with physiological saline, via subcutaneous, intramuscular, intraperitoneal or intraveonus, route. 2. The mice which were inoculated in brain with 0.03ml of Cl. chauvoei diluted 1 : 5120 with physiological saline were resulted in all death after infection, but not in case of attenuated strain even in dilution of one to five. 3. Virulent Cl. chauvoei were diluted with each of those of whole blood, erythrocytes and serum of horse, calf, swine, sheep, rabbit, guinea pig, chicken and duck, human plasma and 2% CaCl solution, and inoculated subcutaneously 0.25 to 0.5ml in mice, weighing 12 to 15gm. It was resulted in significant increase in virulence as comparing with the case of physiological saline solution except when horse and pig sera were used. Such a phenomena were not seen in attenuated strain. 4. Virulence of virulent Cl. Chauvoei could be increased significantly in rat, as the procedures used in mice, by suspending in whole blood, erythrocytes, serum, or plasma of various animals, or 2% $CaCl_2$ solution and by inoculating subcutaneously 0.5 to 10ml in rat, weighing 30 to 60 gm, as compared with those of control group which used physiological saline solutionos diluent. 5. Mice resisted 100 and 80 percent against challenge of $10^3$ and $10^4$ M.L.D.. respectively, 24 hours after inoculation of 0.5ml black leg antiserum. 6. Immune response to the black leg living vaccine in mice could be obtained more favorably in the group of respected vaccination rather than those of single inoculation and the most profitable inoculm size of the vacine was 0.5 to 1.0ml. 7. Challenge for the immunized mice could be carried out effectively 3 weeks after first vaccination. 8. Satisfactory results could be obtained by inoculating subcutaneously for the immunization and intracerebrally or subcutaneously for the challenge. 9. Mice which were inoculated with 0.5ml of black leg living vaccine via subtaneucously two times at seven days interval and 21 days after first inoculation and challenged with 5 and 10 M.L.D. of virulent strain, resited 100 and 70 to 80 percent respectively. Same results were obtainable in black leg killed vaccine as the procedures used in living vaccine. 10. There were significantly different resistances against the definite challenge does between the mice groups which were immnuized with the living vaccine diluted five or 10 times and the undiluted. 11. For the biological assay of black leg living vaccine and antiserum, satisfactory results could be obtained using mice.

변형 LIGA 공정을 통해 제작된 Microlens의 모델링 및 시뮬레이션

김동성,이성근,양상식,권태헌,이승섭,Kim, Dong-Seong,Lee, Seong-Geun,Yang, Sang-Sik,Gwon, Tae-Heon,Lee, Seung-Seop 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.9

In this paper, we present modeling and simulation of microlens formation by means of a deep X-ray lithography followed by a thermal treatment of a PMMA (Polymethylmethacrylate) sheet. According to this modeling, X-ray irradiation causes the decrease of molecular weight of PMMA, which in turn decreases the glass transition temperature and consequently causes a net volume increase during the thermal cycle resulting in a swollen microlens. In this modeling, the free volume theory including the relaxation process during the cooling process was considered. The simulation results indicate that the modeling in this study is able to predict the fabricated microlens shapes and the variation pattern of the maximum heights of microlens which depends on the conditions of the thermal treatment. The prediction model could be applied to optimization of microlens fabrication process and to designing a micro mold insert for micromolding processes.