• 한국컴퓨터정보학회논문지
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• 제26권3호
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• pp.51-57
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• 2021

본 논문에서는 카메라의 포커싱과 아웃포커싱에 의해 이미지에서 뿌옇게 표현되는 피사계 심도(Depth of field, DoF) 영역을 효율적인 합성곱 신경망을 통해 찾는 방법을 제안한다. 우리의 접근 방식은 RGB채널기반의 상호-상관 필터를 이용하여 DoF영역을 이미지로부터 효율적으로 분류하고, 합성곱 신경망 네트워크에 학습하기 위한 데이터를 구축하며, 이렇게 얻어진 데이터를 이용하여 이미지-DoF가중치 맵 데이터 쌍을 설정한다. 학습할 때 사용되는 데이터는 이미지와 상호-상관 필터 기반으로 추출된 DoF 가중치 맵을 이용하며, 네트워크 학습 단계에서 수렴률을 높이기 위해 스무딩을 과정을 한번 더 적용한 결과를 사용한다. 테스트 결과로 얻은 DoF 가중치 이미지는 입력 이미지에서 DoF영역을 안정적으로 찾아내며, 제안하는 방법은 DoF영역을 사용자의 ROI(Region of interest)로 활용하여 NPR렌더링, 객체 검출 등 다양한 곳에 활용이 가능하다.

• KSBB Journal
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• 제5권3호
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• pp.307-313
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• 1990

배양기와 16비트 마이크로컴퓨터를 접속하여 호기성 미생물의 고농도 유가배양시스템을 구성하였다. 기질공급을 위한 제어변수로는 용존산소(DO)를 이용하였다. 용존산소측정기의 출력신호를 컴퓨터에 입력시켜 측정한 DO값에 근거하여 교반모터의 교반속도와 산소유량을 제어함으로써 배양액의 DO를 일정하게 유지하였으며, 연동펌프의 제어에 의해 기질공급을 안정하게 수행하였다. 기질공급의 제어와 DO의 제어를 한가지의 하아드웨어 및 소프트 웨어로 수행할 수 있었다. 제어시스템을 이용하여 메탄올이용균인 Methylobacillus sp. SKI을 유가배양한 결과 배양액의 DO제어와 메탄올 공급의 제어가 무리없이 수행되었으며, 배양 10시간만에 16.53g/l의 균체농도에 도달하였다.

• 한국실내디자인학회논문집
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• 제24권6호
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• pp.13-21
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• 2015

The purpose of this study is to analyze the changing housing construction in Jeju-do which is composed of two cities(Jeju-si, Seogwipo-si). The number of indigenous population and migrating population of Jeju-do has been increasing every year because it has more beautiful scenery, interesting culture and a higher ratio of natural green area to urban area than other provinces(inland). More than 70% of population in Jeju-si is concentrated in dong-area. As a result, urban area and commercial area are expanding in entire Jeju-do. On the other hand, green area and non-urban area of Jeju-do are decreasing steadily. And there was a lot of changing during a short of time after 2010 because of internationalization and urban development etc.. This study is an analysis about the changing of housing in Jeju-do by statistical data. As a results of the analysis. I discovered that 1) The supply ratio of available housing in Jeju-do is higher than other inland cities in other parts of the country. 2) Housing constructing is influenced by moving-in and moving-out population. 3) There are more detached houses in Jeju-do than apartments. The opposite phenomenon occurs in other provinces (inland cities). However, the number of detached houses is gradually declining in Jeju-do since 2000. 4) Most detached homes in Jeju-do have an area of $60m^2{\sim}90m^2$. Most apartments have smaller areas than $60m^2{\sim}90m^2$. Seogwipo has homes with a larger area than Jeju-si. 5) The ratio of concrete structure houses is increasing at high speed because of constructing of apartment buildings, on the other hand, the ratio of brick structure house is decreasing gradually. Finally, Even though Jeju-do has different from housing culture of inland, it is changing slowly like inland housing types.

• 조형예술학연구
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• 제3권
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• pp.33-61
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• 2001

Dans les arts modernes, nous ressentons souvent un $probl\`{e}me$ $disloqu\'{e}par$ rapport aux humains. Ceci ne viendrait-il pas $peut-\^{e}tre$ do notre $pens\'{e}e$ dans l' $\'{e}change$ culturelle entre le monde et nous qui s' appuie trop une $temporalit\'{e}$ et logique? Cette $the\`{s}e$ approche ce $probl\`{e}me$ $\`{a}$ travers one perception anthropologique do monde, en $\'{e}tudiant$ les arts tridimensionnels avec ses $\'{e}schelles$ qui deviennes plus on plus agrandis. Maurice Merleau-Ponty, dans son livre 'la $ph\'{e}nom\'{e}nologie$ de la perception', bien $r\'{e}sumait$ une $intersubjectivit\'{e}$ entre l' espace et nous. Selon lui, l' homme prend conscience do la forme des objets avec son environnement parce quil est un corps on interaction avec eux. Donc nous $r\'{e}f\'{e}rons$ ce livre pour notre set. Et on essayera ici d' $\'{e}tudier$ le travail do Constantin Brancusi, de Alberto Giacometti, do Richard Serra et do quelques d' autres travaux d' artistes L' oeuvre do Brancusi 'la Colonne sans fin', la taille plus de 29 m, produit one impression sur le spectateur relativement $\grave{a}$ la forme continue et $r\'{e}p\'{e}t\'{e}e$ $\`{a}$ linfini de $mani\'{e}re$ unifome. La pratique de Giacometti qui tenait compte do son envergure et de la longueur do son corps ainsi que do distance et de la mesure do sos bras, Il $d\'{e}formait$ aussi les silhouettes et transformait les objects en les $\'{e}tirant$ dans la perspective. Rosalind Krauss parler $\`{a}$ loeuvre do Serra, dans son livre 'l' originalit de lavant-garde et sutres mythes modernistes' (pp. 319-333), le spectateur est toujours on mouvement on liaison entre l' horizon do corps et celui do monde. Cette $transitivit\'{e}$ abstraite $r\'{e}ciproque$ entre le regardeur et le $regard\'{e}$, qui est comme le sujet de nombreuses oeuvres do Serra. Cependant le Maximalisme est $\`{a}$ l' origine Minimalisme qui s' $\'{e}tend$ dans ses efforts $th\'{e}oriques$ jusqu' au l' espace architecturale. Ces sculptures do grandes dimensions so situent autour de $b\^{a}timent$ ou dans lespace environnementale, comme ils sent l' architecture et le paysage. On suppose ici, leurs concepts de l' espace $\'{e}largit$ $\`{a}$ celui d' architecture. La sculpture et l' architecture $r\'{e}ciproque$ l' espace tridimensionnel entre eux, mais selon l' argument do Herbert Read pour la distinction de ces deux arts originaux sont, deux saisies de l' espace, ici englobant, $l\`{a}$ $englob\'{e}$. On $\'{e}tudie$ dans co set de concept de l' espace et de l' $\'{e}chelle$ d' objet par rapport au corps humain.

• Parasites, Hosts and Diseases
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• 제51권4호
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• pp.489-492
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• 2013

A paleoparasitological survey to detect helminth eggs was performed in archaeological sites of Jeolla-do and Jeju-do, the Republic of Korea. Total 593 soil samples were collected in 12 sites of Jeolla-do and 5 sites of Jeju-do from April to November 2011, and examined by the methods of Pike and coworkers. A total of 4 helminth eggs, 2 eggs each for Trichuris trichiura and Ascaris sp., were found in soil samples from 1 site, in Hyangyang-ri, Jangheung-eup, Jangheung-gun, Jeollanam-do. The egg-recovery layer was presumed to represent a 19th century farm, which fact suggested the use of human manures. This is the third archaeological discovery of parasite eggs in Jeolla-do. Additionally, no helminth eggs in archaeological sites of Jeju-do is an interesting problem to be solved in the further investigations.

• 한국간담췌외과학회지
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• 제27권1호
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• pp.102-106
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• 2023

Hepatocellular carcinoma (HCC) accounts for most of the hepatic neoplasms and can also occur in ectopic liver tissue. We present a case of a 55-year-old male complaining of weight loss. The imaging studies reported a 2.9 cm nodule in the pancreatic body, with a neuroendocrine tumor diagnosis by cytology. A corpo-caudal pancreatectomy was performed. Pathology showed a well-differentiated HCC developed in ectopic liver tissue with free margins and no lymph node metastases. HCC presenting in ectopic liver tissue is rare. In this case, the preoperative study did not establish the diagnosis, warranting the need for suspicion of this neoplasm.

• 한국가시화정보학회지
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• 제9권1호
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• pp.36-41
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• 2011

It is highly needed to measure the dissolved oxygen (DO) concentration field in water for a variety of purposes such as biological, industrial, environmental monitoring and medical application. Application of PSP (Pressure Sensitive Paint) which is sensitive to oxygen concentration has been carried out to measure DO concentration field using PtOEP/PS film and intensity based method under the UV-LEDs illumination. A micro round water jet having 100% of DO was obliquely impinged on to a PtOEP/PS film coated plate placed in a 0% of DO water container. DO concentration fields on the impinging plate were quantitatively visualized with a $2.94\;{\mu}m$ of spatial resolution. Through pixel-by-pixel calibration, uncertainty of each pixel by different sensitivity, different dye concentration and non-uniformity of illumination was removed. It is demonstrated that the high DO concentration region was coincided with the impingement area. The DO concentration gradient due to DO diffusion was affected by Reynolds number.

• 한국동물학회지
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• 제5권2호
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• pp.13-17
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• 1962

The author colelcted crabs (Tribe Brachyura ) on the coasts of fourteen western islands of South Korea (Paenyong Do, Taechong Do, Sochong Do, Taeyonpyong Do, Kanghwa Do, Yongjong Do, Chagyak Do, Tokchok To. Moktok To. Pukkyoknyolbi Do. Ong Do, ANmyon Do, Pigum Do, and Taehuksan Do) mainly in summers during a period ranging from 1955 to 1962. Of these Islands, Paeknyong , Taehong, Taeyonpyong, Ong, Anmyon, Pigum and Taehuksan Do are the localities where the crabs were investigated firstly by the present author. The collections made by the author consist of 1779 specimens of crabs involving 9 families. 25 genera, 33 species and 5 subspecies (Table2). 23 species of crabs had been reported hitherto from Tokchok To and 7 from Kanghwa Do. In present paper the author adds 1 species to the fauna of crabs of Tokchok To and 7 to that of Kanghwa Do. In present paper the author adds 1 species to the fauna of crabs of Tokchok To and 7 to that of Kanghwa D. Among 38 species or subspecies of crabs collected, Oregonia gracilis, Cancer amphioetus and Chaesmagnathus convexus are new to the fauna of the west coast of Korea. 57 species of crabs are therefore identified in this area. The author collected Pinnotheres cardii on Taechong Do and Scopimera bitympana on Pigum Do. It became, therefore, clear that these two kinds of crabs occur much wider areas than known hitherto in Korea. The nothern limit of the distribution of Ocypoda stinpsoni and Sesarma haematocheir is Kyungki Bay as known already, that of Helice tridens is ,however, more northern part than Kyungki Bay, since they were collected on Paeknyong Do.

• 한국인터넷방송통신학회논문지
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• 제9권1호
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• pp.11-17
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• 2009

본 논문은 W-CDMA 신호를 대상으로 3차원 적응 배열 안테나를 이용한 도래각 추정의 성능에 관한 것이다. 이를 위하여 5 가지의 3 차원 배열 안테나를 제시한 후 이들 안테나에 도래각 추정을 위한 알고리즘으로는 MUSIC을 공통으로 적용하였고, 이의 추정 성능을 위해서는 도래각 추정 오차를 이용하였다. 이동 통신과 무선 측위 서비스에서는 배열 안테나를 사용하여 방해 신호의 도래각을 추정한 후 공간 필터링하므로서 원하지 않는 방향으로부터의 방해 신호를 최소화 또는 널링시키고, 원하는 방향으로의 빔을 형성하므로서 수신 신호의 품질을 개선할 수 있다. 컴퓨터 시뮬레이션을 통해 안테나별 도래각 추정 결과와 신호대 잡음비와 방해 신호의 수와 전력에따른 도래각 추정 오차를 계산하였다. 시뮬레이션 결과 도래각 추정의 경우 Stack 3D 형을 제외한 나머지 3D 안테나가, 도래각 추정 오차의 경우 방해 신호의 수와 전력이 증가할때 Curved-B 형 안테나가 가장 우수함을 알 수 있었다.

• 한국산학기술학회논문지
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• 제9권2호
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• pp.395-400
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• 2008

본 논문은 GPS 신호를 수신할 때 재머신호의 제거를 위한 성능 개선을 목적으로 2차원 원형 배열 안테나를 이용한 도래각(DoA : Direction of Arrival) 추정 알고리즘의 성능 분석에 관한 것이다. 배열 안테나를 사용하여 DoA를 추정한 후 공간 필터링을 수행함으로서 원하지 않는 방향으로부터의 재머신호를 널링(nulling)시키고, 원하는 방향으로의 빔을 형성하므로서 수신 신호의 품질을 개선할 수 있다. 논문에서는 4 소자와 7 소자 원형 배열 안테나에서 재머신호의 각도와 전력을 고정시킨 후 DoA 추정을 위하여 MUSIC, MinNorm 알고리즘을 적용한다. 이들 알고리즘의 성능 분석을 위하여 추정 결과와 추정 오차를 컴퓨터 시뮬레이션을 통하여 계산한다. 추정 결과 신호대 잡음비가 양호한 경우 Azimuth각과 Elevation각 추정에서는 MUSIC과 MinNorm이 우월하며, 신호대 잡음비가 낮은 경우 MUSIC이 MinNorm보다 우월한 성능을 보인다.