화물자동차 운송정보망 구축에 관한 탐색적 연구

김철민Chul-Min Kim) 한국국제상학회 2010 國際商學 Vol.25 No.2

Domestic cargo trucking transportation service industry has been suffering from too much excessive supply and one of the reasons was the unadequate government policy. 'This hard environment causes truck drivers' transportation veto from 2003 and serious danmge to the Korean economy. Recently, the proposition of a cargo trucking service transportation law which is submitted to the Korea national assembly in 2009 can be an effective alternative for the innovation of the old and inefficient cargo trucking transportation industry. According to the above law proposition, trucking company and trucking mediation agencies should use the cargo trucking information networking system which can be cargo trucking franchise companies or information systems certified by the Korean government. This research compared the needs for the trucking information networking system among truck drivers, trucking and service mediating agencies, and forwarders by the survey methodology. Research results suggest tllat the information networking system should be developed by the regional base, not the whole country base. Survey research also suggests tllat the various trucking transportation associations in Busan should participate in the developing and operating of the new system

다양한 산화물들이 리튬규산염 유리의 결정화에 미치는 영향

김철민,임형봉,김용수,김세훈,오경식,김철영,Kim, Chul-Min,Lim, Hyung-Bong,Kim, Youg-Su,Kim, Se-Hoon,Oh, Kyung-Sik,Kim, Cheol-Young 한국세라믹학회 2011 한국세라믹학회지 Vol.48 No.4

Glass-ceramics based on lithium disilicate($Li_2Si_2O_5$) are prepared by heat-treatment of glasses in a system of $SiO_2-Li_2O-K_2O-Al_2O_3$ with different compositions. The crystallization heat-treatment was conducted at the temperature range of $700{\sim}900^{\circ}C$ and samples were analyzed by XRD and SEM. Mechanical properties were determined by a Vicker's hardness and 4 point bending strength. When $SiO_2/Li_2O$ ratio increased, cristobalite and tridymite crystals showed more predominate than lithium disilicate crystals. Increase in $Al_2O_3$ contents in the glass suppressed crystallzation of lithium disilicate crystals. Increase in ZnO, $B_2O_3$ contents in the glass decreased crystallization temperature of lithium disilicate crystals, and increased mechanical properties because of the reduction of the lithium disilicate crystal size.

원인 불명의 실신 환자의 진단에 있어서 Head - up tilt Test 의 유용성과 혈관미주신경성 실신 환자의 임상적 특징

윤호중(Ho Joong Youn),정욱성(Wook Sung Chung),백상홍(Sang Hong Baek),김철민(Chul Min Kim),박인수(In Soo Park),김재형(Jae Hyung Kim),최규보(Kyu Bo Choi),홍순조(Soon Jo Hong) 대한내과학회 1994 대한내과학회지 Vol.47 No.2

N/A Background: Syncope, defined as a transient loss of consciousness, is a frequently encountered symptom, but despite thorough clinical and invasive diagnostic investigation, the cause of syncope remains unexplained. In recent years, head-up tilt test has been of increasing interest as a diagnostic aids in patients with unexplained syncope. We studied to define the usefulness of various diagnostic test in the evaluation of patients with recurrent syncope, to assess the usefulness of head-up tilt test in the working of syncope of unknown origin and to evaluate the clinical characteristics of subgroups of patients with syncope induced by head-up tilt test. Methods: Between June, 1991 and November, 1992 at St. Mary`s hospital, 21 patients with history of syncope and 24 control subjects without history of syncope underwent 60° head-up tild test for 60 min. Results: 1) The definite cause for recurrent syncope were diagnosed in 10 of patients (47,6%) after clinical and invasive tests. 2) During head-up tilt test, vasovagal responses were provoked in 5 of 21 patients (23.8%) with recurrent syncope and 1 of 24 patients (4.2%) without syncope (p<0,05). 3) The head-up tilt test induced symptomatic bradycardia or hypotension in 3 of 10 patients (30%.) with negative electrophysiologic results. 4) During tilt induced vasovagal response, a) mean heart rate decreased to 42±24 beat/min from supine control of 70±12 beat/min (p<0. 05), b) mean systolic blood pressure decreased to 95±12 mmHg from supine control of 120±S mmHg (p<0,05), c) mean diastolic blood pressure decreased to 60±21mmHg from supine control of 72±13 mmHg (p<0.05), d) the time interval to onset of vasovagal response was 22±12 min. Conclusions: 1) In a large proportion of patients with recurrent syncope, the diagnosis remains unexplained despite a neurologic and cardiologic investigation including an electrophysiologic study. 2) Vasovagal responses are frequent cause in patients with recurrent unexplained syncope. 3) The head-up tilt test may be a simple, safe and highly yielding provocative test in the investigation of syncope of unknown origin.

제2차 세계대전과 유고슬라비아

김철민,Kim, Chul Min 한국외국어대학교 외국학종합연구센터 동유럽·발칸연구소 2000 동유럽발칸연구 Vol.8 No.-

시뮬레이션을 통한 압전형 초음파 스케일러 개발 및 평가

김철민,이영진,백종후,정영훈,강국진,이정배,이승대,Kim, Chul-Min,Lee, Young-Jin,Paik, Jong-Hoo,Jeong, Young-Hun,Kang, Kook-Jin,Lee, Jeong-Bae,Lee, Seung-Dae 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.10

A piezoelectric ultrasonic scaler, usually used to remove the tartar out of teeth and to amputate the pubis, is a recently popular instrument for dental treatment due to its several merits such as small size, low-electric power, precision and low-cost. It has typically two parts of a tip and vibration system, which is also composed of head, piezoelectric elements and tail-mass. The scaler concentrates its displacement on tip and has commonly a resonance frequency at 25~30 kHz, and in order to improve the performance of the scaler, it is important to standardize the size of the vibration system without tip for high performance because scaler in quality differs according to several tips. In this study, a Finite Element Analysis (FEA) was utilized to optimize the structure of ultrasonic scaler in the vibration system. Consequently, this study revealed that influence of several tips on property were minimized and scaler showed good property at the resonance frequency of 28 kHz.

MPEG-2 비디오 디코더 적합성 검사용 비트열의 제작

김철민,이병욱,박래홍,Kim, Chul-Min,Lee, Byung-Uk,Park, Rae-Hong 대한전자공학회 1999 電子工學會論文誌, S Vol.s36 No.10

MPEG-2 비디오 표준에서는 다양성을 보장하기 위하여 많은 변수들을 조절할 수 있다. MPEG-2 비트열을 통하여 전송되는 이러한 변수들이 MPEG 비디오 디코더에서 올바르게 해석되어, 전송한 것과 동일한 영상이 수신기에서 재생되는지 확인하여야 한다. 본 논문에서는 검사할 디코더의 최정화면을 관측하여 MPEG 비디오 디코더의 정상 동작 여부를 간편하게 확인할 수 있도록 검사용 비트열을 설계하는 방식을 제안하였다. 제작된 비트열의 내부는 두 부분으로 구성된다. 하나는 검사할 변수를 변화시키며 검사 패턴을 만드는 부분이고, 다른 하나는 MPEG의 움직임 보상과 discrete cosine transform(DCT) 계수를 이용하여 이전 프레임에서 만들어진 검사 패턴을 상쇄시키는 부분이다. 이러한 원리를 적용하여 검사용 비트열을 제작하였고 스프트웨어 디코더로 분석한 결과를 제시하였다. In MPEG-2 video standard, there are many parameters to support profiles and levels. It is necessary to verify that a decoder is compliant with the MPEG-2 standard. This paper proposes a design principle of the test bitstreams which confirms that an MPEG video decoder is correct by observing the final image of the decoder under test. The presented test bitstream is composed of two parts. The first part generates a test pattern by varying a selected test parameter. And the following predictive coded picture generates a complementary pattern to the previous image by motion compensation and DCT coefficients. Then it will result in a uniform pattern. We present several bitstreams following the proposed principle. Also we analyze and compare the characteristics of the test bitstreams presented in the MPEG conformance test and the proposed test bistreams.

보스니아 사회통합에 있어 EU의 역할과 지원 현황에 관한 연구

김철민(Chul-Min Kim) 한국유럽학회 2018 유럽연구 Vol.36 No.4

보스니아의 EU 가입에 있어 EU의 전제 조건과 목표는 다음과 같다. 첫째는 민족 간 화해와 조화로움에 기초한 ‘사회 통합’이며, 둘째는 1995년 보스니아 내전을 종결지은 ‘데이튼 평화 협정’의 마지막 단계인 ‘1국가 1체제’ 수립을 통한 ‘영구적 평화 정착’이다. 보스니아의 EU 가입은 오랜 민족 갈등으로 고통 받은 서부 발칸 지역의 민족 간 화해와 평화 정착의 초석으로 상징되고 있지만 여전히 많은 과제와 장애물이 남아 있다. EU의 1차 목표인 민족 간 ‘사회 통합’ 구축 이후에도 ‘영구적 평화 정착’의 구체적 상징인 ‘1국가 1체제’라는 정치 통합이 걸림돌로 자리하고 있다. 이러한 걸림돌을 제거하기 위해선 우선 과거 역사에 대한 반복된 공포에서 벗어나 민족 간 신뢰 구축인 ‘상호믿음’이 확립되어야 한다. 그리고 두 번째로 ‘1국가 1체제’로의 통합이 구성원 각자에게 보다 확실한 이익을 줄 것이라는 ‘공통 이익’에 대한 확신 또한 수립되어야 한다. 현재 보스니아에게 있어 EU는 이러한 ‘상호 믿음’과 ‘공통 이익’을 가져다 줄 수 있는 유일한 국제기구이자 보스니아의 보다 나은 미래를 꿈꿀 수 있는 거의 유일한 대안이라 평가할 수 있다. 이러한 연구 관점을 바탕으로 본 논문에선 보스니아의 EU 가입을 향한 추진과정을 살펴보고 여기서 나타난 보스니아 사회통합을 위한 EU의 정책들과 그 역할 그리고 이를 위한 EU의 지원 및 그 현황에 대해 분석하고자 한다. The EU’s preconditions and targets for Bosnia’s EU accession are: The first is ‘social integration’ based on national reconciliation and harmony. And the second is the ‘permanent peace settlement’ through the establishment of ‘One State-One System’ which is the final stage of the ‘Dayton Peace Agreement’ which concluded the Bosnian Civil War in 1995. Bosnia’s accession to the EU is symbolized as the ‘Cornerstone’ of national reconciliation and peaceful settlement in the Western Balkans, which has suffered from long-standing national conflicts, but there are still many challenges and obstacles remaining. Even after the establishment of ‘social integration’ between the nations, which is the first goal of the EU, political integration as a ‘One State-One System’, which is a concrete symbol of ‘permanent peaceful settlement’, is a stumbling block. In order to eliminate these obstacles, firstly, the ‘mutual beliefs’, which builds trust between the national groups, must be established. And secondly, there must be a certainty of ‘common interest’ that the integration into the ‘One State-One System’ will give more certain benefits to each nation. For the present Bosnia, the EU is the only international organization capable of bringing these ‘mutual beliefs’ and ‘common interest’ and can be regarded as the only alternative to dream of a better future for Bosnia. Based on these research perspectives, this study examines the process of Bosnia’s accession to the EU, analyzes the EU’s social integration policies in Bosnia and its role and support.

보스니아분쟁에 대한 배경과 서구의 대응전략: 벤스-오웬안과 데이턴 합의안의 비교

김철민 ( Chul Min Kim ) 한국외국어대학교 국제지역연구센터 1998 국제지역연구 Vol.2 No.4

고속철도 환경 하에서의 철도화물운송 활성화 방안

김철민(Chul-min Kim),김종칠(Jong-chill Kim) 한국국제상학회 2007 國際商學 Vol.22 No.2

  Up to now, the railroad cargo transportation in Korea has not been well utilized and has lost its competitiveness advantage as major domestic transportation mode. Thus our research tries to examine and conceptualize the railroad cargo transportation service quality, measure the perception of its service quality, and suggest the revitalization strategies for the railroad cargo transportation.<BR>  To derive the factors of the railroad cargo transportation service quality, we use the Delphi as the empirical methodology and major findings are as follows. First, railroad cargo transportation service quality was confirmed as total ten factors such as tangible accessibility, intangible accessibility, tangibility, expertism, interfacing, on-time delivery, speed, cost-advantage, safety, and accuracy. Second, as the result of the gap analysis for the service expectation and performance of railroad cargo transportation, factors that make the significant gaps among above ten factors are found as interface, on-time delivery, speed, and cost-advantage.<BR>  This results imply that the revitalization strategies should focus on the improvement of these four service factors. And our research suggests that the six detail strategies for the effective revitalization of railroad cargo transportation.

흑해경제협력기구(BSEC)에 대한 세르비아의 시각과정책 연구

김철민(Kim, Chul Min) 한국외국어대학교 동유럽발칸연구소 2011 동유럽발칸연구 Vol.27 No.1

본 논문에선 지역 협력의 관점에서 ‘흑해경제협력기구(BSEC: The Black Sea Economic Cooperation)’의 내용과 의미를 살펴보고, 회원국 중 하나인 세르비아가 ‘신냉전’ 확대라는 국제 현실과 선택의 갈림길에서 이 기구를 어떻게 바라보고 있는 지, 그리고 이에 대한 외교 전략과 정책들은 어떠한 지에 대해 분석하고자 한다. 본 논문의 구성을 보면, 제 2장에서는 지역 협력의 개념과 이론, 주요 요소들에 대해 소개하고, 이를 기초로 흑해의 대표적 지역협력기구인 BSEC를 분석하고자 한다. 제 3장에서는 세르비아가 BSEC를 선택한 배경과 이 기구 내에서 어떤 활동들을 하고 있는 지에 대해 설명하고자 한다. 그리고 BSEC에 대한 세르비아의 시각과 전략을 러시아와 의 쌍무 간 외교 관계 치중에서 비롯된 국제 고립 탈피, 국가적 최종목표인 EU 가입을 위한 예비 단계, 회원국에 대한 국제 범죄 해결과 안보 문제 지원 그리고 코소보 문제 해결에 있어 외교적 우위권 장악 등으로 나누어 분석하게 될 것이다. 마지막으로, 제 4장에선 본 논문의 전반적인 내용들과 함축적 의미들을 다시 한 번 고찰하고, 이를 토대로 BSEC의 향후 전망을 제시하고자 한다. This thesis will analyze the content and meaning of the BSEC(Black Sea Economic Cooperation) from the viewpoint of regional cooperation. In addition, I will talk about how Serbia has seen the BSEC as the turning point of international political selection in an enlarged ‘New Cold War’ as well as the political strategy and diplomatic policy of Serbia. The structure of this paper is as follows: in chapter II, I will introduce the general idea and theory of regional cooperation along with its main components. And I will also analyze the BSEC, which is a representative organization of regional cooperation in the Black Sea region. In chapter III, I will explain why Serbia selected the BSEC among other organizations for regional cooperation and how she acts in this organization. In particular, I will describe the Serbian foreign policy and viewpoint toward the BSEC with respect to these key points: 1) The break with international isolation which originated from one-sided diplomatic relations with Russia, 2) The preliminary steps taken toward becoming a member of the EU, 3) The solution for international crime in member states of the BSEC and assistance with national security problems, 4) The security of diplomatic superiority on the Kosovo problem. Finally, in chapter IV, I will finish with a summary of the contents of this paper, and refer to the prospects for the BSEC.