직교류에서 난류제트로 유입되는 유량에 관한 고찰

김형민,김은필,Kim, Hyung Min,Kim, Eunpil 대한기계학회 1999 大韓機械學會論文集B Vol.23 No.3

A jet injected normally into a cross flow has been found to have the cross section of a horseshoe shape. It occurs by a twin vortex motion in the region downstream of the jet injection. Such a flow is inherently and highly three-dimensional and numerical calculations should play an important role. The three-dimensional momentum equations with buoyancy effect and energy equation are solved to obtain the velocity distributions, center-line trajectories, cross sectional shape and entrainment. The density difference is sufficiently small, so that the Boussinesq approximation is considered to be valid. The SIMPLE algorithm is applied in a staggered grid system of a calculational domain for the numerical method.

Fractional-Step법을 이용한 비압축성 비정상 Navier-Stokes 방정식의 유한 요소해석

김형민,이신표,Kim, Hyung-Min,Lee, Shin-Pyo 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.4

The main objective of the research is to develop a research code solving transient incompressible Navier-Stokes equation. In this research code, Adams-Bashforth method was applied to the convective terms of the navier stokes equation and the splitted equations were discretized spatially by finite element methods to solve the complex geometry problems easily. To reduce the divergence on the boundaries of pressure poisson equation due to the unsuitable pressure boundary conditions, multi step approximation pressure boundary conditions derived from the boundary linear momentum equations were used. Simulations of Lid Driven Flow and Flow over Cylinder were conducted to prove the accuracy by means of the comparison with results of the previous workers.

시부트라민(sibutramine) 음독 후 발생된 급성 정신병증 1례

김형민,우선희,최세민,소병학,Kim, Hyung-Min,Woo, Seon-Hee,Choi, Se-Min,So, Byung-Hak 대한임상독성학회 2009 대한임상독성학회지 Vol.7 No.2

A 38-year-old woman was admitted to our hospital due to agitation, nausea, chest discomfort, tachycardia and hypertension 6h after ingesting approximately 60 capsules of sibutramine. The woman developed the clinical features of acute psychosis, including auditory hallucination, agitation and paranoid ideation, on day 2. No relevant changes were detected on the laboratory examinations or on the electrocardiogram throughout the period of hospitalization. She was treated with risperidone and benzodiazepine. The symptoms subsequently resolved completely with cessation of the provoking agent. The patient was discharged on day 7 and the follow-up revealed no sequelae for 5 months.

서울 지역 고등학생 및 대학생을 대상으로 한 패스트푸드업체의 '스타마케팅' 광고효과 분석

김형민,윤지영,Kim, Hyung-Min,Yoon, Ji-Young 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.1

The purpose of this study was to analyze the effects of celebrity endorsers used in fast food industry among highschool and undergraduate students. By taking the sample's age and income into consideration, the advertisement examples of fast food industries were chosen for this study. Data was collected by questionnaires from 400 students. For statistical analysis, the SPSS V19.0 was used for reliability and factor analysis, chi-square test and regression analysis. The results are as follows: First, there was a significant difference (p<0.01) in advertising effects according to gender and education level. Out of the consumers who were exposed to celebrity endorsers, the highschool students and women showed higher advertising effects. Second, the advertising attitude was positively related to brand images (F: 479.680, p<0.01) and buying intentions (F: 1101.427, p<0.01) as well as brand images on purchase intentions (F: 492.175, p<0.01). In conclusion, the consumers with positive attitudes towards advertisements will also evaluate brand images positively and be more likely to purchase the products.

유제놀에 의한 즉시형 알레르기 반응의 억제

김상현(Sang Hyun Kim),신태용(Tae Yong Shin),김형룡(Hyung Yong Kim),이영미(Young Mi Lee),이은희(Eun Hee Lee),신보경(Bo Kyoung Shin),김윤철(Youn Chul Kim),안년형(Nyeon Hyoung An),김형민(Hyung Min Kim) 대한약학회 1996 약학회지 Vol.40 No.6

The current study evaluates the capacity of eugenol to regulate immediate allergic reaction by control of histamine release. Administrations of eugenol (1M/kg, i.p.) at 60 min before and 5, 10 min after the compound 48/80 treatment (8mg/kg, i.p.) were shown the mortality rates as 0, 44.4, and 77.8%, respectively. A 60 min before administered group revealed a significant inhibition of serum histamine release compared with those of 5 and 10 min after the compound 48/80 injection. Eugenol (6-48mM) was also showed a dose-dependent activity on the compound 48/80-induced histamine release from the highly purified population of Alcian Blue-positive peritonea] mast cells. These results indicate that in vitro treatment with exogenous eugenol inhibited the active response of mast cell populations and modulated its characteristics.

자동 염전침의 진통효과

김계진,이형석,김선광,민병일,이재동,박동석,이순걸,김형민,Kim, Kye-jin,Lee, Hyung-suk,Kim, Sun-kwang,Min, Byung-il,Lee, Jae-dong,Park, Dong-suk,Lee, Soon-girl,Kim, Hyung-min 대한침구의학회 2004 대한침구의학회지 Vol.21 No.3

Background and Objective : Twirling is one of the needling methods, which is frequently used for acupuncture in oriental medicine. Some thesis about needle manipulation has been reported that needle manipulation is more effective than plain acupuncture. So we have developed the auto-controlled twirling needle(ACTN) system which is most simple style of needle manipulation. The present study was conducted to see if ACTN can enhance the antinociceptive effect of acupuncture. Methods : To investigate the analgesic effect of acupuncture we used two pain model. One is acute pain model using tail flick latency(TFL), the other is neuropathic pain model using mechanical allodynia. For TFL test, rats were lightly anesthetized with pentobarbital sodium(40 mg/kg, i.p). To produce mechanical allodynia in the rat tail, the right superior caudal trunk was resected between the S1 and S2 spinal nerves. For plain acupuncture(PA), a needle was inserted into a Zusanli(ST36) for 15min. In combining ACTN with PA, twirling needle was performed once in a second. We measured the difference of analgesic effect of only PA and ACTN on two different kinds of pain. Results and conclusion : ACTN increased TFL more than PA. (15min P<0.001, 25min P<0.01). And ACTN also reduced neuropathic pain (15min P<0.01, 25min<0.05). But PA alone can't reduce the neuropathic pain. These results indicate that ACRN had more analgesic effect than PA. The mechanism that play a key role, and the condition which produce best analgesic effect of ACTN are to be studied further.

저장조 용량제약이 있는 회분식 공정-저장조 그물망 구조의 최적설계

김형민(Hyung-Min Kim),김규년(Kyoo-Nyun Kim),이경범(Gyeongbeom Yi) 제어로봇시스템학회 2001 제어·로봇·시스템학회 논문지 Vol.7 No.10

와이파이 기반의 라돈농도 모니터링 시스템 구현

김형민(Hyung-Min Kim),정재원(Jai-Won Chung),민병빈(Byoung-Bin Min),김준용(Jun-Yong Kim),황재창(Jae-Chang Hwang),김규식(Gyu-Sik Kim) 대한전기학회 2019 정보 및 제어 심포지엄 논문집 Vol.2019 No.4

공공서비스부문 6시그마 추진 단계별 성공요인에 관한 연구 -공공부문 사례를 중심으로

김형민 ( Hyung Min Kim ),이동원 ( Dong Won Lee ),조정래 ( Jung Rae Cho ) 한국경영공학회 2013 한국경영공학회지 Vol.18 No.3

Recently, public sector is working on utility improvement as well as private sector does. Starting from Korea Post, six-sigma management practices, which had satisfactory results for solving fundamental problems in many private companies, were introduced into Prosecutors` Office, Korea Coast Guard, Korea Customs Service and even the Korean Armed Forces in part. Although six-sigma came into spotlight with exceptional results in the various private sectors, skepticism still exists in whether six-sigma can be applicable to public service sector because it is all about statistics and was originated from manufacturing industry at first. This study identifies success factors of current six-sigma practices using past studies, analyzes whether six-sigma is well applied to public service sector or not. By doing so, this study evaluates six-sigma implementation suggests which part is inefficient and should be improved when it comes to application of six-sigma to public service sector.

네트워크 분석방법의 국제정치학적 적용

김형민(Hyung Min Kim) 한국정치학회 2009 한국정치학회보 Vol.43 No.1

본 논문에서는 먼저 네트워크와 네트워크 분석방법을 자세히 소개하였다. 이러한 소개에 뒤이어 네트워크 분석방법의 국제정치학적 적용의 시도로서, 1950년부터 2002년까지의 국제체제에 존재하는 모든 국가 간에 이루어진 군사무기 이전의 자료 (SIPRI Arms Transfers Database)를 사용하여 50여 년간의 군사무기 네트워크에 대한 고찰을 국제정치학계에서는 처음으로 시도하였다. 본 연구는 국제체제 차원에서의, 그리고 아시아 지역에서의 지난 50여 년간의 군사무기 네트워크 구조와 주요행위자들에 대하여 분석하였다. 본 연구에서의 네트워크 분석의 결과들을 간단히 정리하면 다음과 같다. 첫째, 국제체제 차원에서나 아시아지역 차원에서의 군사무기 이전의 네트워크는 1950년부터 2002년까지 몇몇 주요 행위자들에 의해 지배되어 오고 있다. 둘째, 이러한 몇몇 행위자들의 무기이전 네트워크 지배 경향은 국제체제 차원에서보다 아시아지역에서 미세하지만 더 강력히 이루어져 왔다. 셋째, 무기이전 네트워크의 주요 행위자 중에서 특 히 미국의 중심성이 현저하게 크게 나타난다. 넷째, 군사무기이전 네트워크는 국제관계의 주요 강대국 들 이외의 국가들의 지배성도 보이는데, 그 대표적 인 사례가 이탈리아와 체코슬로바키아이다. 국제관 계연구의 전통적 패러다임의 하나인 신현실주의, 더 구체적으로, 구조적 현실주의가 주로 강대국들 과 그들 간의 관계에 초점을 맞추어 왔던 데 비하 여, 새로운 네트워크 패러다임은 국제체제에 존재 하는 모든 구성원과 그들 간의 관계에 초점을 맞추고 있으며, 이러한 새로운 네트워크 관점에서 군사 무기 이전을 분석한 본 연구의 학문적 의의는 기존의 분석시각들로는 파악되기 어려운 군사무기 이전의 중요한 현상을 도출했다는 점이다. After introducing a network concept and a network analysis tool, this study analyzes military arms transfer networks focusing on network structure and core network states for the period of 1950-2002 using the SIPRI Arms Transfer Database. The main research question examined in this study is as follows: what are some distinctive structural characteristics and major actors of arms transfer networks in the international system and in the Asian region for the last 50 years? The social network analyses in this study show that military arms transfers networks have been dominated by some major actors (such as the U.S., the Soviet Union/Russia, China, the U.K., France, Italy, and Czechoslovakia), and the dominance of those major actors has been diminished since the end of the Cold War. Among those major actors in the arms transfers networks, the analysis shows that the U.S. has been the most important network actor, both in the system and in Asia, especially during the Cold War era. Unlike the previous theoretical paradigm of international relations (esp. structural realism) that focuses mainly on major powers and the relationships among those states, this study argues for the network perspective of international relations, focusing on all states (including both major and non-major states) and their interaction patterns in the system, and proves that this social network perspective presents a more complete picture of international phenomena such as international military arms transfers.