제진장치를 이용한 기존 건축물의 내진성능

최경석,김형준,Choi, Kyung Suk,Kim, Hyung Joon 한국구조물진단유지관리공학회 2015 한국구조물진단유지관리공학회지 Vol.19 No.2

단위 모듈러 구조체의 보-기둥 접합부 해석 모델

최경석,김형준,Choi, Kyung-Suk,Kim, Hyung-Joon 한국전산구조공학회 2014 한국전산구조공학회논문집 Vol.27 No.6

최근, 모듈러 구조 시스템은 공기를 단축시킬 수 있는 장점으로 인해 건설 현장에 적용되고 있다. 모듈러 구조시스템은 단위 모듈로 구성되며, 모듈과 모듈의 볼트접합을 위해 보-기둥 접합부에 개구부를 가공하게 된다. 일반적으로 모듈러 구조시스템은 기존 철골모멘트골조와 유사한 하중전달체계를 가지는 것으로 가정하여 설계된다. 이와 같은 설계 가정의 타당성을 확보하기 위해, 단위 모듈의 보-기둥 접합부에 대한 회전 성능이 파악되어야 한다. 본 연구에서는 개구부의 구조적 영향이 고려된 접합부의 회전성능을 파악하기 위해 유한요소해석을 수행하였다. 해석결과 단위모듈은 충분한 변형능력을 가지고 안정적인 이력거동을 하는 것으로 나타났으며, 단위모듈의 접합부는 부분강접 접합부로 분류되었다. 또한 본 연구에서는 단위 모듈의 비선형 골조 해석을 위한 간단한 스프링 모델을 개발하였으며, 단위 모듈의 비선형 이력 거동을 구현하기 위해 Ramberg-Osgood 이력 모델을 제시하였다. Recently, modular structural systems have been applicable to building construction since they can significantly reduce building construction time. They consists of several unit modular frames of which each beam-column joint employs an access hole for connecting unit modular frames. Their structural design is usually carried out under the assumption that their load-carrying mechanism is similar to that of a traditional steel moment-resisting system. In order to obtain the validation of this assumption, the cyclic characteristics of beam-column joints in a unit modular frame should be investigate. This study carried out finite element analyses(FEM) of unit modular frames to investigate the cyclic behavior of beam-column joints with the structural influence of access holes. Analysis results show that the unit modular frames present stable cyclic response with large deformation capacities and their joints are classified into partial moment connections. Also, this study develops a simple spring model for earthquake nonlinear analyses and suggests the Ramberg-Osgood hysteretic rule to capture the cyclic response of unit modular frames.

"기문비록(岐門秘錄)" 에 대(對)한 고찰(考察) (하(下))

최경석,김상운,송지청,이시형,Choi, Kyung-Suk,Kim, Sang-Un,Song, Ji-Chung,Lee, Si-Hyeong 대한한의정보학회 2010 大韓韓醫情報學會誌 Vol.16 No.2

An empirical formula that has been empirically shown to be effective for a particular condition can be said to add medical materials to an exciting formula or to make a new prescription by Korean medical doctors' empirical clinic. This dissertation aims to study the prescriptions according to A Confidential Document of A Distinguished Medical Family and to contribute to the development of Korean medicine. A Confidential Document of A Distinguished Medical Family is a medicinal recipe that is an heirloom of the Gyeongju Kim family for the eighth generation. And the date and the writer of the book are unknown. The contents of the book consist of 18 parts and are made up of about 300 medical recipes. Of these, 153 formulas and indications of roundworm, cholera, puffy swelling, abdominal distension, phlegm-rheum, woman, child, summerheat, dryness-heat, eye, and blood are found in the book. From among these, 26 formulas are directly quoted out of The Precious Mirror of Oriental Medicine, 93 formulas are adjusted in proportion or combined and 34 formulas are empirical ones. By the parity of reasoning of the above, I think that this book was published after The Precious Mirror of Oriental Medicine.

자발적인 소극적 안락사와 소위"존엄사"의 구분 가능성

최경석 ( Kyung Suk Choi ) 한국의료윤리학회 2009 한국의료윤리학회지 Vol.12 No.1

The concept of "death with dignity" has received a great deal of attention in South Korea recently. While some believe that death with dignity is different from euthanasia, others maintain that it is a form of voluntary passive euthanasia. Medical futility and autonomy clearly play an important role in the moral justification of death with dignity. This article argues for the necessity of introducing a new criterion of medical futility into the classification of euthanasia, for there may be moral differences between medically futile treatment and basic treatment such as antibiotics, hydration, and nutrition. The patient`s views on what constitutes medical futility may also be relevant. One notion of death with dignity examined in this article is the idea of not interfering with "natural death." This notion of death with dignity is distinct from any form of euthanasia defined as hastening a patient`s death for him/herself. However, as is shown in this article, this notion is impractical due to the vagueness of the concept of "natural death." Thus, this article defends the claim that death with dignity is a form of euthanasia.

바닥충격음 차단을 위한 뜬바닥 구조의 진동응답특성에 관한 실험적 연구

최경석 ( Choi Kyung-suk ),석원균 ( Seok Won-kyun ),목지욱 ( Mauk Ji-wook ),신이섭 ( Shin Yi-seop ),김형준 ( Kim Hyung-joon ),김정진 ( Kim Jeong-jin ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2

A floating floor generally consists of mortar bed separated from the structural RC slab by a continuous resilient layer. It is known that the floating floors are a type of vibration-isolation system to improve the impact sound insulation performance. However, some researchers have demonstrated that the amplification of vibration response at a specific range of frequencies results in an increase in the impact sound level. This study carried out the forced vibration tests to obtain the frequency response function (FRF) of a floating floor compared with a bare RC slab. Test results shows that the additional peak occur in vibrational spectrum of the floating floor except natural vibration modes of the bare RC slab. This is because the relatively flexible resilient material and mass of the mortar bed offer an additional degree of freedom in the structural system. Therefore, it could be efficient for reduction of floor impact vibration and noise to control the additional mode frequency and response of floating floors.

유전자 검사 및 연구의 윤리적 문제와 유전치료의 문제: 유전자 결정론을 중심으로

최경석 ( Kyung Suk Choi ),김중호 ( Joong Ho Kim ),이경상 ( Kyung Sang Lee ),구인회 ( In Hoe Ku ) 한국의료윤리학회 2006 한국의료윤리학회지 Vol.9 No.2

Advances in the life sciences have increased our knowledge of the human genome, which in turn has given rise to worries as well as expectations over future societies. Genetic determinism is one of the philosophical sources of these worries and expectations. The purpose of this study is to describe two types of genetic determinism, strong and moderate, and then analyze the causal power of genes from the point of view of both of these theories. Genetic determinism holds that genotypes determine phenotypes. Strong and moderate genetic determinism differ on the question of whether there exist possible defeating factors. However, neither type of genetic determinism is plausible because of the complicated nature of the causal relationships between genotypes and phenotypes. Only when genes function as sufficient conditions, and not merely as necessary conditions, can they determine phenotypes. In addition, since defeating factors may exist, it is unlikely that each genotype determines its relevant phenotype. If genetic determinism is not plausible, the common view of genes must be corrected. Most research on the relationship between genotypes and phenotypes are about correlations, expressed with probabilities, rather than casual relations. This means that the interpretations of genetic experts are necessary. In addition, whether genetic determinism is plausible or not, individuals should not be stigmatized for having certain genotypes. If genetic research is about correlations, gene therapy research should be carried out with great caution based initially on animal studies. We may learn more about the complicated causal roles of genes from these correlations. From such knowledge, we may intervene in the causal chains in which genes are involved. In doing such research, patient confidentiality must be protected.

복합운동처치가 태권도 선수의 슬관절 등속성 근 기능에 미치는 영향

최경석(Choi Kyung-Suk) 한국생명과학회 2008 생명과학회지 Vol.18 No.1

본 연구에서는 남자 고등부 태권도 선수들을 대상으로 하여 등장성운동과 등척성ㆍ등장성운동을 혼합하여 복합 훈련을 실시한 차이를 알아보기 위하여 등속성 근 기능 중 최대우력, 동측근력비율, 양측근력비율, 근지구력을 분석한 결과를 다음과 같은 결론으로 나타내었다. 첫째, 최대우력은 좌우측 신굴근 모두에서 등장성 운동집단에 비하여 복합 훈련집단이 유의하게 증가한 것으로 나타났다. 둘째, 동측근력비율, 근지구력은 두 집단 간에 유의한 차이는 나타나지 않았지만, 운동전후에 차이에 있어서는 두 집단 모두 유의하게 증가하였다. 셋째, 양측근력비율은 두 집단 간에 유의한 차이는 나타나지 않았지만, 운동전후에 차이에 있어서는 두 집단 모두 유의하게 감소하였다. 이러한 결과로서 태권도 선수들의 경기력 증가를 위한 주요 체력요소인 평형능력, 근 지구력의 향상을 위한 방법으로 등장성 운동과 복합훈련 중 어떠한 방법으로 실시하여도 근 기능을 향상 시킬 수 있는 운동법으로 생각된다. 그러나 등척성 운동과 등장성 운동을 복합적으로 실시하였을 경우 최대우력이 등장성운동을 실시한 집단에 비하여 유의하게 증가하는 현상으로 보면 태권도 발차기의 파워를 보다 증가시키기 위해서는 등장성 운동과 등척성을 복합적으로 실시하는 운동방법이 보다 효과적인 방법으로 생각된다. The purpose of this study was to investigate the effect of Isotonic Training and Isotonicㆍisometric complex Training to Knee joint Isokinetic muscle function in the high-school Taekwondo athlete. This subjects were randomly divided into two groups ; a Isotonic Training group (n=7)ㆍIsotonic isometric complex Training group (n=7), Taekwondo athletes share each, 12 weeks between executes a motion. peak torque, H/Q ratio, bilateral muscular ratio muscular endurance of knee joint measured, For this study, two-way ANOVA with repeated measure were used. The result of this study presents between groups was not plain difference expressed. H/Q ratio, bilateral muscular ratio, muscular endurance was plain difference expressed after 12 weeks point of time (p>0.05) and peak torque was plain difference expressed (p<0.05). Conclusion each group did not appear all but one (peak torque), but point of view exercise was effect H/Q ratio, bilateral muscular ratio, muscular en-durance, peak torque plain difference expressed.

기독교 사회윤리학에서 바라 본 한국 개신교의 경제운동에 대한 평가

최경석 ( Choi Kyung Suk ) 한국기독교사회윤리학회 2018 기독교사회윤리 Vol.42 No.-

모든 인간은 사회제도 속에서 존재하며 심지어지는 “나”란 주체도 “나 자신”과의 관계 속에서 존재한다. 인간은 사회관계 속에서 일어나는 모든 상호작용에 책임을 짊어져야할 윤리적 존재다. 그러기에 모든 윤리는 사회윤리라는 말은 유용하다. 여기에 기독교라는 특수한 시각으로 조망되는 것이 기독교 사회윤리인 셈이다. 경제윤리는 사회윤리의 특수한 한 사례다. 한국 개신교는 역사 속에서 일어난 사회문제들에 직간접으로 참여함으로써 해결책에 대한 대안과 방향성을 나름대로 제안했다. 여기에서 주목할 것은 경제문제들에 어떻게 참여했는지이다. 개신교의 수용부터 현재까지 역사적 추적을 통해서 그것을 기독교 사회윤리적 측면에서 평가하는 것과 앞으로의 방안을 제시하는 일은 오늘의 한국 개신교에게 일부 필요한 작업이다. 기독교 사회윤리가 지향하는 바가 그리고 그리스도의 왕권통치의 영역에서 교회가 해야 할 일이 공공신학임을 주지할 때, 한국 개신교의 경제운동은 교회의 역량을 강화시켜 시민사회와 연대하는 사업일 것이다. Since humanity lives in a social system, human beings are ethical beings that should bear responsibility for all the interactions that take place in social relationships. It is useful that all ethics are social ethics. If you attach Christianity to it, it will become Christian social ethics. The Korean Protestant Church directly or indirectly participated in social problems in history. By doing so, this research proposes alternatives and directions for solutions. What is noteworthy here is how Christians have participated in the economic issue. This study evaluates this issue based on the Christian social and ethical aspects from the acceptance of Protestantism to the present till now. Finally, it would be a necessary task for Korean Protestant church today to suggest future plans.

기독교 경제윤리의 눈으로 ‘소득주도 성장’ 정책 읽기

최경석(Choi, Kyung Suk) 한국기독교사회윤리학회 2019 기독교사회윤리 Vol.44 No.-

우리나라의 2019년 화두는 평화를 전제로 한 경제로 해석된다. 문재인 대통령은 2019년도 신년기자회견에서 경제부분에 주요한 내용을 할애했다. 사람중심의 경제와 혁신적 포용성장은 문재인 정부의 경제정책에 있어서 두 개의 중심 기둥이다. 이를 중심으로 문재인 정부의 경제정책의 중심기조인 소득주도 성장을 추진하는 힘이 강해질 것이라고 본다. 소득주도 성장은 성장의 선순환 구조를 실현시키기 위해서 소득주도와 사람 중심으로 경제정책의 패러다임을 전환하려는 시도이다. 본 논문은 소득주도 성장이 기독교 윤리, 특히 기독교 경제윤리적 시각에서 하나의 준칙임을 리히의 경제윤리 방법론을 통해서 논증하고 있다. 이를 위해서 리히가 제시한 규준 설정의 방법론에 의거해서 참여라는 규준을 중심으로 참여적 연대와 참여적 분배를 기독교 경제윤리의 규준들로 설정하고 소득주도 성장이 위의 세 가지 규준들을 통과한다면, 기독교 경제윤리에 부합될 수 있다는 것이 이 논문의 핵심이다. 소득주도 성장은 기독교 경제윤리의 시각에서 오늘날 한국경제 상황에 필요한 것으로 바라볼 수 있다. 소득주도 성장의 경제정책은 성서에서 증언하는 것 같이 사회적 약자를 우선 생각하고 있는 하나의 정책으로 사료되기 때문이다. In 2019, a topic of the Republic of Korea is a peace-based economy. President Moon Jae-in referred to economic issues as a key in his New Year’s address in 2019. Human - centered economy and innovative inclusive growth are two central pillars of this government ‘s economic policy. As a result, income-led growth is expected to gain momentum. The Swiss theologian Arthur Rich studied Christian economic ethics. According to his methodology, it is important to set the criterions and set the maxim. The criterions mentioned in this article are participation, solidarity, and distribution. When the income-led growth policy passes these three criterions, it can be set as a maxim from the perspective of Christian economic ethics.

무작위 임상시험의 윤리적,법적 문제

최경석 ( Kyung Suk Choi ) 한국의료윤리학회 2008 한국의료윤리학회지 Vol.11 No.1

Human experimentation can be ethically justified when subjects participate on a voluntary basis. Informed consent is required for clinical trials, including randomized clinical trials. Nevertheless, ethical issues arise when subjects are randomly distributed to experimental and control groups in randomized clinical trials. I argue that equipoise as well as informed consent is a condition of randomized clinical trials. Benjamin Freedman distinguishes theoretical equipoise from clinical equipoise. I call the former the "individual physician equipoise" and the latter the "clinical community equipoise". Under clinical community equipoise, randomized clinical trials are ethically justified because physicians may still provide the best treatment to their patients. The above ethical principle should be applied to placebo-controlled randomized clinical trials. When experimental drugs and placebos are in clinical community equipoise, a trial may be ethically justified. In addition, placebo-controlled randomized clinical trials should be designed with double-blinding. The reason for this requirement is that physicians would cheat their patients without doubleblinding. Current FDA regulations in Korea and the US do not sufficiently reflect the above ethical points. Institutional review boards should review their protocols in light of these ethical points. In particular, IRB regulations should reflect the basic ideas of equipoise in randomized clinical trials and double-blinding in placebo-controlled randomized clinical trials.