2D wavelet과 이차신경망을 이용한 패턴인식 시스템

이봉규,Lee, Bong-Kyu 대한전기학회 2001 전기학회논문지 D Vol.50 No.5

Image processings using the two-dimensional wavelet transform (2DWT) have been a very active research area in recent years because the 2DWT possess many good properties. However, the discrete 2DWT can not be used for pattern recognition directly because it does not have the translation property. In this paper, we show why conventional discrete two-dimensional wavelet transforms cannot be used for pattern recognitions directly. Then, we propose a new method that makes it possible to use discrete 2DWT to pattern recognition without modification of standard pyramidal algorithms. The main idea of our method is to postprocess the wavelet transformed images using the second-order neural network. To justify the validity of the method, evaluations with test images were performed. The effectiveness of the method can be shown by the evaluation results.

선택된 특징 공간을 사용하는 효율적인 신경망 기반 패턴 인식 시스템

李鳳奎(Bong-Kyu Lee),金漢鎰(Han-Il Kim) 대한전기학회 1997 전기학회논문지 Vol.46 No.5

다산학 연구의 최근 동향과 전망 - 근대론의 시각을 중심으로

이봉규 ( Bong Kyu Lee ) 다산학술문화재단 2005 다산학 Vol.- No.6

This paper analyzes the recent outcomes of research by first, dividing the topics into biography, philosophical thought, classical studies, ritual studies, and administrative studies, and second, reviewing the moot point of each topic, and finally, proposing questions and further suggestions. The main contents are as follows: 1) As far as Tasan`s writings are concerned, the process and dates of Tasan`s writings and of his posthumous writings, whether hand-copied or printed, are not clarified. The project of accumulating Tasan`s original writings cannot but fail without first clarifying this process. 2) In order to elucidate the developmental procedure of Tasan`s philosophical system, it should be examined in detail Sung-ho School`s response to Western Studies as well as changes in Chinese thoughts during Ming and Qing dynasties. 3) Since the beginning of 90`s, it has been pointed out that Tasan`s classical studies were significantly influenced by the administrative mind of King Jung(Jung-jo). The popular conclusion that Tasan`s views on administrative studies are slanted toward strengthening the sovereignty does not seem to have a strong line of reasoning. 4) So far as the argument that Tasan`s ritual studies tends to strengthen the royal power is concerned, there are two counter arguments. One is that Tasan`s main objective was to criticize the ritual studies after Han dynasty and to revive the original viewpoint of Confucius and Mencius(Jang Dong-woo). The other is that Tasan`s ritual studies not only have the aspect of strengthening the royal power but also the aspect of constraining the abuse of power(Park Jong-chun). Each of these counter arguments, however, cannot but limited, for it is based on a particular writing of Tasan. To uncover Tasan`s real attitude toward state affairs, a comprehensive research on Tasan`s writings relating to ritual studies should comebeforehand. 5) Regarding the character of Tasan`s administrative studies, which has been portrayed so far as the awakening stage of mdernity, two opposing viewpoints appear. One interprets that Tasan`s administrative studies do not contain in itself the essence of modernity, but in its attempt to synthesize disintegrating traditional systems, signs of what could be seen as the seed of modernity can be detected. The other is that Tasan`s state-community centered administrative studies were not a step to modernity, but a way of reforming the whole political structure that had been degenerated by premier-centered leadership. These researches, nevertheless, show a rather biased approach toward Neo-Confucianism; that is, they see Neo-Confucianism only from the aspect of sage-learning or of nature-mind theory, and tend to overlook the pre-modern aspect of Practical Learning scholars such as ritual studies. It reveals that they cannot unfetter themselves from premise that Tasan`s administrative studies are the step to modernity. All of these points are to be re-examined and researched further, without preconception of “step to modernity.” In order to re-interpret the historical development of East-Asian thoughts, it is urgently required to have a new perspective on human-community.

원격 피부전이를 동반한 담관암

이봉규 ( Bong Kyu Lee ),서영호 ( Young Ho Seo ),이남훈 ( Nam Hun Lee ),주소영 ( So Young Joo ),고향미 ( Hyang Mi Ko ) 대한소화기학회 2009 대한소화기학회지 Vol.54 No.5

Cutaneous metastases rarely develop in patients with internal malignancy. Cholangiocarcinoma, a malignant cancer of the bile duct, is a relatively rare adenocarcinoma and has a poor prognosis. Few reports have mentioned cutaneous metastases of cholangiocarcinoma, and the most of them were due to direct tumor seeding by percutaneous procedures. Herein, we report a case of cholangiocarcinoma with distant cutaneous metastases in a 60-year-old man. (Korean J Gastroenterol 2009;54:342-345)

폴리머 시멘트 몰타르 포장재용 Carboxylated Styrene Butadiene 라텍스의 제조와 적용 특성

이봉규 ( Bong Kyu Lee ),주창식 ( Chang Sik Ju ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.5

For the purpose of development of the latex suitable for polymer cement mortar, experiments on the preparation of carboxylated styrene butadiene latex by the method of the two-step emulsion polymerization were performed. Methyl methacrylate, methacrylic acid and acrylic acid were selected as carboxylic co-monomer, styrene and butadiene as monomer, sodium dodecylbenzene sulfonate and sodium salt of lauryl sulfonate as anionic emulsifiers, and nonylphenoxy poly (ethyleneoxy) ethanol (n=10, 20, 40) as latex stabilizer. Potassium persulfate and sodium bisulfite were also used as redox initiator, and sodium monohydrogen phosphate and potassium carbonate as electrolytes. The effects of categories and concentration of carboxylic co-monomer, molecular weight control agent, crosslinking agent, and styrene/ butadiene monomer ratio on the characteristics of latex were investigated. Polymerization recipes for preparation of polymer cement mortar could be proposed. The prepared latexes were tested for the physical properties such as compressive and flexural strength when latexes were mixed with cement mortar. The results showed that the latex could be adapted to polymer cement mortar. Also, it was recognized that the compressive and flexural strength were exhibited 25.4% and 45.3% respectively higher improvement than the quality standards at 28 days curing time.

서북출신 엘리트의 해방 후 남한 관료 진출

이봉규 ( Lee Bong-kyu ) 연세사학연구회( 구 연세대학교 사학연구회 ) 2018 學林 Vol.42 No.-

이 글은 서북출신 엘리트들의 해방 후 관료 진출 양상을 살펴보는 가운데, 식민기시기 관료로서 행정체험이 어떻게 해방 이후에도 영향을 미치는지를 살펴보려는 시도다. 기존 연구에서는 서북출신의 일반적 특성으로 기독교-민족주의-반공주의를 초점에 두었다. 여기에는 서북지역을 기반으로 활동한 조선민주당계열의 정치지도자들 그리고 미국 유학경험을 지녔던 미군정기 고급관료들이 주요 대상이었다. 하지만 서북출신 관료, 특히 식민지 경찰들의 회고를 검토한 결과 만주와 조선 등지에서 일제에 협력했던 서북출신 엘리트들의 경험도 고려될 필요가 있다고 보았다. 이들은 식민지 경찰관료로서의 행정체험과 방공체험을 바탕으로 하여 해방정국기 냉전적 맥락 속에서 자신들의 경험을 선택적으로 재생시켰다. 이들의 식민지 행정체험은 해방정국기 제주4 3을 비롯하여 반공국가 만들기의 기술이자 자산으로 활용되기도 하였다. 결국 서북출신 엘리트들의 일반적 경향을 지역적 특성에 기초한 기독교-민족주의-반공주의, 나아가 친미로 규정하는 것에 더하여 서북출신 엘리트들의 행정체험을 함께 고려할 필요가 제기된다. This essay attempts to see how the experience of the colonial period bureaucrats of the northwestern elites affected after liberation. In previous researches, Christiannationalism- anticommunism was focused on the general characteristics of northwestern elites. These included political leaders of the Democratic Party of the North, based in the Northwest region, and high-ranking officials under US military government who had studied in the United States. However, as a result of examining the recollection of northwestern bureaucrats, especially colonial police officers, it is necessary to consider the experiences of northwestern elites who collaborated with Japan in Manchuria and Joseon. Based on the experience of administrative and anti-communist experience as colonial police officers, they selectively reproduced their experiences in the Cold War context of liberation. Their colonial administration experience was utilized as skill and asset of ‘anti-communist state’ including Jeju 4.3 of liberation state. Finally, in addition to defining the general characteristic of northwest elites as Christian-nationalist-anticommunism based on regional characteristics, and also as pro-US, it is necessary to consider the cases of histories of pro-Japanese elites.

비만이 임신에 미치는 영향

이봉규 ( Bong Kyu Lee ),이영기 ( Young Gi Lee ),박윤기 ( Yoon Ki Park ) 대한주산의학회 1999 Perinatology Vol.10 No.2

비축대칭 제품의 냉간단조 공정설계시스템에 관한 연구

이봉규(Bong Kyu Lee),조해용(Hae Yong Cho),권혁홍(Hyuk Hong Kwon) Korean Society for Precision Engineering 2002 한국정밀공학회지 Vol.19 No.2

카이로프랙틱 처치가 인라인스케이트 선수들의 고관절 가동범위와 기록향상에 미치는 영향

이봉규(Lee, Bong-Kyu),정한석(Jung, Han-Suk),함주현(Ham, Joo-Hyeon),한승혜(Han, Seung-Hye) 한국웰니스학회 2021 한국웰니스학회지 Vol.16 No.4

본 연구는 카이로프랙틱 처치가 인라인스케이트 선수들의 고관절 가동범위와 기록향상에 미치는 영향을 알아보고자 하였다. 연구 대상자들은 대한롤러연맹 소속 18세 이상의 남, 여 인라인스케이트 선수 42명으로 선정하여 카이로프랙틱 집단(21명), 폼롤러 운동 집단(21명)으로 무작위로 배정하였다. 운동프로그램은 주 1회, 5주간, 총 5회 수행하였다. 프로그램 시행 전, 후로 고관절 가동범위와 인라인 트랙 200m 1바퀴 기록을 평가했다. 자료처리는 대응표본 t 검정(paired t-test)과 독립표본 t 검정(independent t-test)을 실시하여 다음과 같은 결과를 도출하였다. 카이로프랙틱 집단에서 고관절 신전, 굴곡, 외전, 내전, 외회전, 내회전 범위에서 통계적으로 유의한 결과를 나타냈으며(p<.05), 폼롤러 운동 집단에서는 고관절 내회전에서만 유의한 결과가 나타났다. 인라인 트랙 200m 1바퀴 기록에서는 카이로프랙틱 집단에서만 유의한 결과가 나타났다(p<.05). 결론적으로 본 연구를 통해 카이로프랙틱 처치가 인라인스케이트 선수들의 고관절 가동범위와 기록향상에 영향을 미치는 가능성을 제시하고 있으며, 향후의 연구에서는 기록향상에 미치는 영향을 정확하게 알아보기 위해 근력 테스트도 추가하여 다양한 대상자와 다양한 처치방법을 카이로프랙틱 처치와 비교하는 연구가 필요할 것으로 사료된다. The purpose of the study was to investigate the effect of chiropractic treatment on hip joint range of motion and record improvement of inline skate players. The subjects of this study were selected as 42 male and female inline skaters aged 18 or older from the Korean Roller Federation and randomly divided into two groups, the chiropractic group(21 skate players), foam roller exercise group(21 skate players). the exercise program was conducted once a week, for 5 weeks, and for a total of 5 times. before and after the program was implemented, measured hip joint range of motion and inline track 200m one lap record. data processing was conducted by Paired t-test, Independent t-test, the results are as follows. in the chiropractic group(p<.05), the results showed statistically significant increase in hip joint extension, flexion, abduction, adduction, external rotation, internal rotation. in the foam roller exercise group, the results showed significant increase only in hip joint internal rotation. in the record of one lap of 200m in the inline track, the result was significantly decreased only In the chiropractic group(p<.05). in conclusion, this study suggests the possibility of chiropractic treatment affecting hip joint range of motion and record improvement of inline skate players. in future studies. it is considered necessary to compare various subjects and various treatment methods with chiropractic treatment by adding strength test to accurately investigate the impact on record improvement.

한국전쟁 이후 한국의 행정학 연구와 관리(management)론

이봉규(Lee, Bong-Kyu) 역사비평사 2022 역사비평 Vol.- No.141

This article focused on the management discourse after the Korean War and reviewed it focusing on the process of introducing public administration studies. In previous literature, the knowledge of public administration, which was introduced in earnest with US-Korea technical cooperation, was identified only by the influence of American public administration studies, but in this article, it was examined that it was related to studies in Japan as well as in the United States. Social scientists who studied public administration during this period developed two major administrative theories, emphasizing the utility and significance of management in common. One was to understand that politics and administration are inseparable based on the expansion of the function of modern states and the existence of administration-led plans and policies, and to pay attention to the political functions through public administration. The other was to emphasize the uniqueness of public administration and the managerial aspect. From the postwar period to the early 1960s, knowledge of public administration as a management discourse grew its influence through public official education. American scholar Fred W. Riggs introduced administrative perception based on tradition-modernity dichotomy to Korea and influenced public administration research. The coup forces, who paid attention to the managerial function of public administration, tried to spread management-oriented administrative ideas and attitudes to all public officials, and incorporated management theory into both the subject and the system by establishing the Bureau of administrative management. This aspect was based on the intention of the coup forces to use management discourse as a technology of rule for economic growth and modernization.