셀룰로오스 아세테이트 모노 필터의 경도 예측

김종열,김수호,신창호,박진원,임성진,김정렬,이문수,Kim Jong-Yeol,Kim Soo-Ho,Shin Chang-Ho,Park Jin-Won,Lim Sung-Jin,Kim Chung-Ryul,Rhee Moon-Soo 한국연초학회 2006 한국연초학회지 Vol.28 No.1

The objective of the present study is to induct the regression equation for the hardness prediction of cellulose acetate filter which was manufactured by the domestic cellulose acetate tow manufacturer. As a result of our study, the hardness of filter was increased with increasing the plasticizer content and packing density as major factors affecting to the filter hardness. As a result which was obtained by the three dimensional response surface methodology in STATISTIC A program, the hardness prediction value well fitted with experiment result on the high plasticizer content. To make up for the this equation, the new modified fraction of solid factors which was contained the mono denier factor was introduced to the hardness prediction equation, and this third regression equation which was sufficient for the wide plasticizer content, was obtained by the three dimensional response surface methodology in STATISTICA. This results indicated that the third regression equation which was obtained this study was applicable for the hardness prediction of cellulose acetate filter which was manufactured by the domestic cellulose acetate tow manufacturer.

일본의 무기수출 3원칙 폐지와 방위산업

김종열,Kim, Jong Ryul 한국융합보안학회 2014 융합보안 논문지 Vol.14 No.6

일본 아베 내각은 기존의 무기수출 3원칙을 폐지하고 새로운 방위장비이전 3원칙을 발표하였다. 본 논문은 무기 수출금지 규정을 폐지한 배경과 이러한 규정 폐지가 일본 방위산업에 가져올 향후 변화를 전망하였다. 이를 위해 무기수출 3원칙의 개정 과정과 방위산업 관련 지표를 분석하였다. 기존 무기수출의 금지 규정을 폐지하게 된 주된 배경은 일본 정부의 새로운 국가안보전략인 적극적 평화주의와 방산업체의 수년간에 걸친 무기수출 금지 규정에 대한 폐지 요구에서 찾을 수 있다. 그리고 국산화 정책에 의한 내수 위주의 방위산업 구조, 기업의 낮은 방산전업도, 국제적 고립에 따른 낮은 수출 실적 등의 문제점을 타개하기 위한 것이다. 향후 일본 방위산업에 많은 변화가 예상된다. 국방비의 증가추세를 바탕으로 국내 무기 공급을 위한 무기 국산화 정책은 어느 정도 유지하면서, 미국과의 국제 방산협력의 폭은 더 넓혀가고, 타 국가와 다양한 국제 방산 협력에 의한 무기 공동개발과 생산을 활발하게 추진할 것이며, 무기 해외수출 시장의 개척에도 적극 나설 것으로 보인다. Japan has abolished the 3 Principles on Arms Exports and announced the new 3 Principles on Transfer of Defense Equipment and Technology. This article investigates the backgrounds of the abolition of the old regulation on banning arms exports. Japan government repealed 3 principles on arms exports to develop military industry and they insist that they pursue their national strategy called "Proactive Contribution to Peace." The future changes in defense industry due to the new principles are examined with the analysis of the defense industry indicators. The home production of the arms could be continued. However the international cooperation for the co-development and co-production of the weapon systems would be increased with not only the US but also the various countries. At the same time the efforts to export arms overseas are anticipated to be enhanced by the Japanese government and defense companies.

레벨 적응적 이치화를 이용한 웨이블릿 기반의 디지털 워터마킹

김종열,문영식,Kim, Jong-Ryul,Mun, Young-Shik 대한전자공학회 2000 電子工學會論文誌-CI (Computer and Information) Vol.37 No.1

본 논문에서는 웨이블릿 변환을 이용한 새로운 디지털 워터마킹 방법을 제안한다. 웨이블릿 변환은 인간의 시각 구조와 상당히 유사한 다중해상도 특성을 지니고 있을 뿐 아니라, 영상을 공간 영역과 주파수 영역에 효과적으로 국부화 시키는 특성을 지니고 있기 때문에 영상처리에서 널리 연구되고 있는 방법이다. 웨이블릿 변환을 거친 계수들은 일반적으로 가우시안 분포를 따른다고 알려져 있기 때문에 제안한 방법에서는 비가시성과 견고함을 위해서 워터마크로서 가우시안 분포를 가지는 랜덤 벡터를 사용한다. 워터마크 삽입 과정에서는 워터마크가 영상 전체에 삽입될 수 있도록 하기 위해서 LL 부대역을 포함한 모든 부대역을 사용하고, 각 부대역에 대하여 레벨 적응적 이치화를 통해 시각적으로 중요한 웨이블릿 계수를 선택한다. 또한, 선택된 계수에 대하여 웨이블릿 특성에 따라서 각각 다른 가중치를 가지고 워터마크를 삽입한다. 워터마크 검출 과정에서는 벡터투영 방법을 사용하여 추출된 워터마크와 원래의 워터마크 사이의 유사도를 계산한다. 제안한 방법을 여러 가지 영상에 워터마킹해 본 결과, 워터마킹된 영상이 기존에 제안된 방법보다 시각적으로 손상이 없으면서, 여러 가지 압축, 영상처리, 기하학적 변환, 잡음 등에 강한 것을 확인하였다. In this paper, a new digital watermarking algorithm using wavelet transform is proposed. Wavelet transform is widely used for image processing, because of its multiresolution characteristic which conforms to the principles of the human visual system(HVS). It is also very efficient for localizing images in the spatial and frequency domain. Since wavelet coefficients can be characterized by the gaussian distribution, the proposed algorithm uses a gaussian distributed random vector as the watermark in order to achieve invisibility and robustness. After the original image is transformed using DWT(Discrete Wavelet Transform), the coefficients of all subbands including LL subband are utilized to equally embed the watermark to the whole image. To select perceptually significant coefficients for each subband, we use level-adaptive thresholding. The watermark is embedded to the selected coeffocoents, using different scale factors according to the wavelet characteristics. In the process of watermark detection, the similarity between the original watermark and the extracted watermark is calculated by using vector projection method. We analyze the performance of the proposed algorithm, compared with other transform-domain watermarking methods. The experimental results tested on various images show that the proposed watermark is less visible to human eyes and more robust to image compressions, image processings, geometric transformations and various noises, than the existing methods.

한국의 테러리즘 대응 실태에 따른 지역사회 대테러 활동 방안

김종열(Kim, Jong-Ryul),정원훈(Jeong Won-Hoon) 한국사회안전학회 2013 한국사회안전학회지 Vol.9 No.2

테러리즘은 이제 더 이상 국가의 대테러 기관만의 문제가 아니라 지역사회의 구성원들이 함께 고민해야 할 문제로 대두되었다. 울진·삼척 무장공비 사건이 시사하는 바와 같이 지역사회 구성원의 신고 정신이 없으면 보다 많은 희생과 사회적 비용을 감수해야 한다. 따라서 테러리즘과 각종 범죄를 예방하기 위해서는 경찰이나 대테러 기관에서는 지역사회 구성원의 목소리에 귀를 기울이고 이들의 의견을 정책에 반영하여 지역사회 구성원을 하나의 공동체로 인식하여 이들과 각종 정보를 공유하고 수집함으로서 테러리즘을 사전에 예방해야 할 것이다. 또한 국내체류외국인에 대하여 지역사회에서는 불법체류자의 자진신고 유도, 외국인 노동자를 채용하는 업주의 교육 등을 통하여 불법체류자의 근절과 상대적 발탈감에 의해 발생되는 외국인 범죄를 예방해야 할 것이다. Terrorism is no longer a matter of the country"s counterterrorism agency and it has been emerged as a problem that the members of local community should be concerned together. As the case of the armed communist guerrilla in Uljin and Samcheok implies, if there is no reporting intention of local community members, we have to take much more sacrifices and social costs. Therefore, in order to prevent terrorism and various crimes, the police and counter-terrorism agencies should listen to the voice of members of local community and reflect the opinion of them in a policy and recognize them as a community, and collect and share information with them to prevent terrorism in advance. Also, for foreign residents in the country the voluntary report of illegal aliens in a local community should be induced and through the education of employers who hire foreign workers the illegal immigrants should be eradicated and foreigner"s crimes caused by relative deprivation should be prevented.

외국인 노동자 관련 범죄의 실태분석 및 대응방안에 관한 연구

김종열(Kim, Jong-Ryul),김창호(Kim, Chang-Ho),하정훈(Ha, Jung-Hoon) 한국사회안전학회 2013 한국사회안전학회지 Vol.9 No.1

고도의 경제성장으로 인하여 내국인의 3D업종 기피현상과 고령화 및 저 출산으로 외국인 노동자의 국내 유입은 시간이 갈수록 가속화 되어가고 있다. 2011년 12월, 한국의 국내 체류외국인은 1,395,077명으로 2010년 1,261,415명 대비 10.6% 증가하였고 방문취업, 고용허가 등 외국인노동자 증가로 등록외국인이 사상 처음으로 110만 명을 돌파하였고 해마다 약 10만 여명이 등록외국인이 증가하고 있다. 이에 따른 여러 가지 사회문제가 등장하고 있다. 최근 들어 외국인 노동자 범죄가 사회적으로 이슈가 되고 있어 관련 기관에서는 여러 가지 외국인 노동자에 대한 대안을 제시하고 있으나 국민들이 실감하는 것보다 미온적으로 대처하고 있어 외국인 노동자에 대한 국민들의 배타적인 성향이 더욱 가중되고 있다. 따라서 외국인 노동자 범죄에 보다 적극적이고 강력하게 대처할 필요가 있다. 외국이 노동자들의 범죄를 유형별로 살펴보면, 입국을 하기위해 관계당국을 속이거나 문서를 위조 혹은 변조하고 취업을 하기 위하여 경력 등을 속여 목적을 달성하는 경우와 범죄를 목적으로 입국하는 경우로 마약 밀매, 성매매, 성매매 알선, 위조지폐의 유통등이 대표적이며 마약의 경우, 국내 거주하면서 범죄를 저지르는 경우로 나눌 수 있다. Rapid economic growth that led to people’s tendency to avoid ‘3D Jobs’ work that requires hard physical labor, aging society, and low birthrate have been accelerating the influx of immigrant workers to Korea. The number of foreigners living in Korea, 1,395,077 people in 2011 December, has increased by 10.6% from the year before. With the increase of the number of foreigners coming to Korea for employment and permission of employment of foreign workers, the number of the registered foreigners has already passed 1,100,000 people for the first time, increasing by about 100,000 people every year. The growing increase of foreign workers has caused the various social problems. So the crimes committed by the foreign workers has become a social issue recently, and the relevant government agencies have come up with some countermeasures. But these measures have turned out to be more lukewarm than people realize and made people feel more aggressive toward foreign workers. Therefore, we need to take strong action against the crimes committed by foreign workers. Looking into these crimes by types, there are largely two types. One type is those who try to deceive relevant government agencies using the falsification of documents in order to enter Korea or distorting the facts of one’s career record to get a job in Korea, Another type is those who try to enter Korea in order to commit crimes including drug smuggling, sex trafficking, the circulation of counterfeit bills.

지하역사 승강장 열환경 개선을 위한 연구 : 제2보: 도입외기온도에 따른 승강장 열환경

김회률(Hoe-Ryul Kim),김동규(Dong-Gyu Kim),금종수(Jong-Soo Kum),정용현(Yong-Hyun Chung),김종열(Jong-Ryel Kim),김민수(Min-Soo Kim) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-

This study is to examine the possibility of pre-cooling at platform. Through measurement of the thermal environment of Bujeon Subway platforms, review the potential use of ground-water and night purge. The results of this research can improve the thermal environment pre-cooling of the design.

지하수를 이용한 도시철도 지하 승강장 열환경 개선 설계 사례

김회률(Hoe-Ryul Kim),금종수(Jong-Soo Kum),김동규(Dong-Gyu Kim),김민수(Min-Soo Kim),정용현(Yong-Hyun Jung),김종열(Jong-Ryel Kim) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6

시뮬레이션에 의한 지하역사 승강장 열환경 예측에 관한 연구

김회률(Hoe-Ryul Kim),김종열(Jong-Ryeol Kim),정용현(Yong-Hyun Chung),김동규(Dong-Gyu Kim),금종수(Jong-Soo Kum) 한국생활환경학회 2009 한국생활환경학회지 Vol.16 No.3

Heat circumstance of the subway platform which doesn't use air-cooling in summer is so poor condition that passenger would not use subway. To improve this circumstance by passive way we had measured each temperature of the downtown which surrounds a subway station and of the upper region, and applied these to platform. As a result that we simulated the temperature change of platform, we could know that the less temperature of the outer leads the better heat condition of platform also that through the change of ventilation time and amount we could improve the temperature of platform.

외기 예냉설비를 활용한 지하철 승강장 환기설비 개선에 관한 연구

김회률(Hoe-Ryul Kim),김동규(Dong-Gyu Kim),금종수(Jong-Soo Kum),정용현(Yong-Hyun Chung),김종열(Jong-Ryel Kim) 한국생활환경학회 2009 한국생활환경학회지 Vol.16 No.3

Even metro subway have lots of benefits, such as advanced energy efficiency, substitution of ground transportations and improve air environment, the thermal environment of subway, which had opened earlier without air conditioning system, is getting worse because of increasing passenger number and decrepitude. Especially, they are spending lots of money to cooling and air conditioning system during summer season. According to this study, most thermal environments of the Subway line 1 stations in Busan have poor condition except some station. Therefore, in this study, Bujeon station, which is required to improve thermal environment, have been surveyed thermal environment of platforms. Also possibilities of applications of natural energy, which are night purge and ground water to get effect of platform using outdoor pre-cooling equipments, have been examined. Finally, this study has provided basic data for air cooling system design to improve thermal environment of subway station platforms through the results of examination.

지하철 역사 지하수를 이용한 에어와셔에 관한 연구

김동규(Dong-Gyu KIM),김회률(Hoe-Youl KIM),정용현(Yong-Hyun CHUNG),김종열(Jong-Ryul KIM),금종수(Jong-Soo KUM) 한국수산해양교육학회 2010 水産海洋敎育硏究 Vol.22 No.4

Busan subway transportation system has been established a key role in the society last 20 years. However many people are suffering from hot and humid environment at subway station and platform due to deteriorated ventilation system as well as insufficient air conditioning system in existing stations and platforms. As a result, these systems require revitalization. There is about 5400tons of low temperature underground water is generated from subway stations every day. By using this method and air washer we are trying to lower the temperature. Air washer is commonly used for removing humidity but in this experiment it will be used as air precooling. This research offers result of experiment using air washer system to lower the temperature in large spaces like subway station. The experiment result has shown when L/G was the same, at condition which water spray temperature at 18℃ resulting inlet and outlet temperature difference larger. Also, in the same water spray temperature conditions, larger L/G condition showed a greater temperature difference. LCC evaluation of both system were shown that air washer system of using underground water will save 53% of the initial cost than refrigeration system, and save 75% of operating cost.