초기 성 학대 경험이 있는 여성 공황장애 환자의 임상적 특성

김경민,김민경,이강수,최태규,이상혁,Kim, Kyung Min,Kim, Min-Kyoung,Lee, Kang Soo,Choi, Tai Kiu,Lee, Sang-Hyuk 대한생물정신의학회 2016 생물정신의학 Vol.23 No.4

Objectives The objective of this study is to investigate differences of clinical characteristics between a healthy female control group and female panic disorder (PD) patients with early sexual abuse history (PD+S) and without early sexual abuse history (PD-S). Methods We examined data from 83 patients diagnosed with PD and 20 healthy control subjects. We divided the patients with PD into PD+S (32 patients) and PD-S (51 patients) to compare demographic and clinical characteristics. The following instruments were applied: the Stress coping strategies, the Beck Depression Inventory (BDI), the Panic Disorder Severity Scale, the Anxiety Sensitivity Index-Revised (ASI-R), the Albany Panic and Phobia Questionnaire (APPQ) and the NEO-neuroticism. Results Compared to the PD-S, the PD+S group showed higher scores in neuroticism and the APPQ. And, in the PD+S group, the scores of neuroticism were correlated with the ASI-R and APPQ subscale scores and the APPQ total scores were associated with the scores of BDI. Conclusions This study shows that female PD+S patients have higher scores in neuroticism and the APPQ than the PD-S group, and these factors are associated with the panic-related symptoms severity. It emphasizes the need of specific strategies considering the childhood abuse history such as early sexual abuse in clinical approach among patients with PD.

연구 논문 : 전기화학적 마이크로머시닝 기술을 이용한 균일한 니오븀 표면 에칭 연구

김경민 ( Kyung Min Kim ),유현석 ( Hyeon Seok Yoo ),박지영 ( Ji Young Park ),신소운 ( So Woon Shin ),최진섭 ( Jin Sub Choi ) 한국공업화학회 2014 공업화학 Vol.25 No.1

본 연구에서는 micro-contact printing을 통하여 니오븀 호일 표면 위에 균일한 에칭 pits를 형성하였다. 균일한 보호층을 형성하고자 전해연마의 효과를 확인하였으며, 기존의 O2 플라즈마 공정 없이 손쉽게 균일한 에칭 pits를 형성시킬 수 있는 조건을 확인하였다. 메탄올 혼합 전해질을 사용하여 10 min 동안 에칭을 진행한 결과 니오븀 호일 표면 위에 지름과 간격이 각각 10 μm와 5 μm로 잘 정렬된 에칭 pits를 관찰하였다. We describe the preparation of highly-ordered etching pits on the Nb foil through a micromachining. The effects of electro-chemical polishing on the formation of uniformly-patterned protective epoxy layer was investigated. Unlike the previous proc-ess using O2 plasma, well-ordered etched pits were prepared without any dry processes. As a result, the Nb foil with the well-ordered pits of 10 μm × 5 μm could be obtained by electrochemical etching in methanolic electrolytes for 10 min.

불안 관련 장애의 신경생물학적 이해

김경민,김민경,이상혁,Kim, Kyung-Min,Kim, Min-Kyoung,Lee, Sang-Hyuk 대한생물정신의학회 2014 생물정신의학 Vol.21 No.4

Anxiety disorders are characterized by dysregulation of neuroendocrine, neurotransmitter and neuroanatomical functions. Substantial advances in research method offered new insights into the neurobiologic mechanisms in anxiety disorders. Advances in molecular biology have enabled illumination of hormone and neurotransmitters that have important roles in anxiety. The neuroanatomic circuits related to anxiety are also being elucidated by improvements in neuroimaging technology such as structural and functional magnetic resonance imaging. This article reviews the research data in relation to the neurobiology underlying fear and pathologic anxiety and discusses their implications for development of biological treatments for anxiety disorders.

지하철 차량운용 문제에 대한 수리적 해법에 관한 연구

김경민(Kyung Min Kim),홍순흠(Soon-Heum Hong) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-

This paper considers subway routing problem. Given a schedule of train to be routed by a railway stock, the routing problem determines a sequence of trains while satisfying turnaround time and maintenance restrictions. Generally, the solution of routing problem is generated from set partition formulation solved by column generation method, a typical integer programming approach for train-set. However, we find the characteristics of metropolitan subway which has a simple rail network, a few end stations and 13 departure-arrival patterns. We reflect a turn-around constraint due to spatial limitations has no existence in conventional railroad. Our objective is to minimize the number of daily train-sets. In this paper, we develop two basic techniques that solve the subway routing problem in a reasonable time. In first stage, we formulate the routing problem as a Min-cost-flow problem. Then, in the second stage, we attempt to normalize the distance covered to each routes and reduce the travel distance using our heuristic approach. Applied to the current daily timetable, we could find the subway routings, which is an approximately 14% improvement on the number of train-sets reducing 15% of maximum traveling distance and 8% of the standard deviation.

강남지역의 아파트가격 변화가 전국에 미치는 영향

김경민(Kim Kyung-Min) 대한국토·도시계획학회 2007 國土計劃 Vol.42 No.2

Located south of Han River in southeastern part of Seoul, the KangNam-Gu experienced enormous increase in apartment prices since the year 2000. Many argue that the price changes in this area have a nationwide impact. In response to this claim, the Korean government enacted several regulations to stabilize the apartment prices in KangNam. However, it is not clear whether the KangNam Area has a real effect on the real estate market at a national scale. Wide variations in apartment price increases exist across different parts of Korea. Even within the Seoul Metropolitan Area, smaller administrative units (gu) have shown strikingly different patterns of price increases from the KangNam Area. This implies the existence of several apartment submarkets. The existence of submarkets and the differences in housing consumers' behavior across the nation allow us to deduce that the specific area-KangNam-may not have a nationwide influence on the apartment market. This paper examines how each city's apartment market reacts to both its past price movements and KangNam's current and past price movements. Several econometric methods including autoregression model, distributed lag model and autogressive distributed lag model are used for this analysis. The results indicate that the apartment prices in many cities in Korea reacted primarily to their own past movements while the price changes in KangNam had a major influence only on its spatially nearby areas (southeast part of Seoul and cities in the Kyung-Gi Province) rather than on the entire country.

준안정상 기반의 질화철계 영구자석소재 제조연구동향

김경민,이정구,김경태,백연경,Kim, Kyung Min,Lee, Jung-Goo,Kim, Kyung Tae,Baek, Youn-Kyoung 한국분말야금학회 2019 한국분말재료학회지 (KPMI) Vol.26 No.2

Rare earth magnets are the strongest type of permanent magnets and are integral to the high tech industry, particularly in clean energies, such as electric vehicle motors and wind turbine generators. However, the cost of rare earth materials and the imbalance in supply and demand still remain big problems to solve for permanent magnet related industries. Thus, a magnet with abundant elements and moderate magnetic performance is required to replace rare-earth magnets. Recently, $a^{{\prime}{\prime}}-Fe_{16}N_2$ has attracted considerable attention as a promising candidate for next-generation non-rare-earth permanent magnets due to its gigantic magnetization (3.23 T). Also, metastable $a^{{\prime}{\prime}}-Fe_{16}N_2$ exhibits high tetragonality (c/a = 1.1) by interstitial introduction of N atoms, leading to a high magnetocrystalline anisotropy constant ($K_1=1.0MJ/m^3$). In addition, Fe has a large amount of reserves on the Earth compared to other magnetic materials, leading to low cost of raw materials and manufacturing for industrial production. In this paper, we review the synthetic methods of metastable $a^{{\prime}{\prime}}-Fe_{16}N_2$ with film, powder and bulk form and discuss the approaches to enhance magnetocrystalline anisotropy of $a^{{\prime}{\prime}}-Fe_{16}N_2$. Future research prospects are also offered with patent trends observed thus far.

한국과 일본의 노인장기요양보험에 관한 문헌고찰

김경민,김남희,이정화,윤현서,박혜영,김혜진,Kim, Kyung-Min,Kim, Nam-Hee,Lee, Gung-Hwa,Yoon, Hyun-Seo,Park, Hye-Young,Kim, Hye-Jin 한국치위생학회 2017 한국치위생학회지 Vol.17 No.5

Objectives: The purpose of this study is to look into the health insurance systems and application in Korea and Japan in order to improve elderly people's quality of life. Their quality of life can be improved by upgrading the long term care systems; and extending treatment and prevention. Methods: This study is to examine long term care systems articles through content analysis in the National Health Insurance Service. Data were collected from the printed Internet and analyzed. Results: A part-time dentist system in elderly care facilities has trouble in taking care of old people's oral health due to both lack of time and operational difficulties. It is urgent to arrange dental experts who can permanently stay in care facilities and to build systems which can be managed periodically and continually. Conclusions: As having staff training for the efficiency and using the manpower in care facilities (care workers), it is necessary to solve the unequal medical service in oral health care for the elderly in Korea.

선행조건이 명세되어 있지 않은 복합 리팩토링에 대한 조립성 검사

김경민,장필재,김태공,Kim, Kyung-Min,Jang, Pil-Jae,Kim, Tae-Gong 한국정보처리학회 2011 정보처리학회논문지D Vol.18 No.1

최근의 소프트웨어 개발에서는 리팩토링이 활발하게 이용되고 있다. 리팩토링에 대한 관심이 높아지면서 요소 리팩토링을 정의해서 이들의 조립을 통해 더 큰 종류의 복합 리팩토링을 처리하려는 연구들이 많이 진행되고 있다. 복합 리팩토링은 조합된 요소 리팩토링의 순서대로 처리되기 때문에 프로그램에 실제 적용하기에 앞서 적용 가능성을 판단하는 것이 중요하다. 기존 연구들에서는 요소 리팩토링들의 선 후행조건들로부터 복합 리팩토링에 대한 선행조건을 계산하여 적용 가능성을 판단하고 있다. 이것은 선행조건이 정의되어 있는 복합 리팩토링만 판별할 수 있으며 선행조건이 정의되어 있지 않은 복합 리팩토링에 대해서는 적용 가능성을 판단할 수 없는 문제점이 있다. 본 연구에서는 복합 리팩토링의 명세를 추가로 정의 하지 않고 요소 리팩토링만으로 조립 가능 여부를 판단하고자 한다. 이를 위해 요소 리 팩토링을 명세하는 방법과 조립성 검사 방법을 제안한다. 이를 기반으로 프로토타입 도구를 개발해 보고, 적용사례를 통해 선행조건이 명세되어 있지 않은 복합 리팩토링들의 조립성 검사를 확인해봄으로써 본 연구의 효용성을 검토해본다. Refactoring has been actively used in recent software developments. Many studies on the processing of more large scaled composite refactorings have been conducted through the composition of elementary refactorings. It is important to verify the possibility of composition before the refactoring is performed, because the composite refactorings are processed to the sequence of composed elementary refactorings. In conventional studies, they verify the possibility of composition using the precondition of composite refactorings which are computed from the precondition and postcondition of elementary refactorings. They can not verify the possibility of composition in case which composite refactorings do not have a specification of precondition. Thus, we plan to verify the possibility of composition by using the elementary refactorings only without any additional definitions of the preconditions of composite refactorings. To achieve this goal, we proposes a specification method of elementary refactorings and a method for the composition check of refactorings. Then, we develop a prototype tool based on these methods. In addition, we verify the efficiency of our methods through case studies.

공중구강보건사업시 치면열구전색의 유지율과 우식예방효과에 관한 연구

김경민,신승철 ( Kyung Min Kim,Seung Chul Shin ) 대한예방치과·구강보건학회 1994 大韓口腔保健學會誌 Vol.18 No.1

수소불화탄소 및 수소염화불화탄소 냉매(R-134a, R-227ea, R-236fa, R-141b)를 이용한 가스 하이드레이트 형성에 관한 계산화학적 해석

김경민,안혜영,임준혁,이제근,원용선,Kim, Kyung Min,An, Hye Young,Lim, Jun-Heok,Lee, Jea-Keun,Won, Yong Sun 한국화학공학회 2017 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.55 No.5

가스 하이드레이트 형성원리를 이용한 해수담수화는 이미 상용화된 역삼투 방식에 비하여 아직 실증화 단계이지만 그 공정이 비교적 단순하고 특히 냉매를 객체가스로 사용할 경우 아주 낮은 공정 온도가 필요하지 않아 에너지 소비량(thermal budget)이 향상될 가능성이 있기 때문에 여전히 많은 관심을 받고 있다. 따라서 본 연구에서는 수소불화탄소(HFC, hydrofluorocarbon) 및 수소염화불화탄소(HCFC, hydrochlorofluorocarbon) 계열의 냉매들을 객체가스로 한 가스 하이드레이트 형성 거동을 에너지적인 관점에서 해석하고자 하였고 이를 위해 밀도 범함수(DFT, density functional method) 이론을 기반으로 한 분자모델링을 도입하였다. 객체가스(guest gas)로 R-134a, R-227ea, R-236fa, R-141b를 선정하였으며 계산을 위하여 물 분자로 이루어진 $5^{12}$, $5^{12}6^2$, $5^{12}6^4$의 세가지 구조의 동공들(cavities)을 구성하였다. 동공, 객체가스, 그리고 객체가스가 삽입된 동공의 구조를 분자모델링을 이용하여 각각 최적화하였고 계산된 각 구조의 에너지로부터 동공과 객체가스의 결합에너지(binding energy)를 계산하였다. 마지막으로 결합에너지를 비교함으로써 어느 냉매가 가장 유리한 조건에서 가스하이드레이트를 형성할 지를 판단하였다. 결과적으로 R-236fa가 가장 자발적(spontaneous)으로 가스 하이드레이트를 형성할 것으로 예상되었고 사람에 대한 낮은 독성과 물에 대한 작은 용해도 측면에서도 가장 적절한 선택으로 평가되었다. Although the desalination technique using gas hydrate formation is at a development stage compared to the commercially well-established reverse osmosis (RO), it still draws attention because of its simplicity and moderate operational conditions especially when using refrigerants for guest gases. In this study, DFT (density functional theory)-based molecular modeling was employed to explain the energetics of the gas hydrate formation using HFC (hydrofluorocarbon) and HCFC (hydrochlorofluorocarbon) refrigerants. For guest gases, R-134a, R-227ea, R-236fa, and R-141b were selected and three cavity structures ($5^{12}$, $5^{12}6^2$, and $5^{12}6^4$) composed of water molecules were constructed. The geometries of guest gas, cavity, and cavity encapsulating guest gas were optimized by molecular modeling respectively and their located energies were then used for the calculation of binding energy between the guest gas and cavity. Finally, the comparison of binding energies was used to propose which refrigerant is more favorable for the gas hydrate formation energetically. In conclusion, R-236fa was the best choice in terms of thermodynamic spontaneity, less toxicity, and low solubility in water.