• 한국식품과학회지
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• 제34권5호
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• pp.885-888
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• 2002

본 연구의 목적은 우리나라의 식품으로 인한 알레르기 발생 빈도를 파악하며 주 알레르기 원인 식품을 파악하는 것이다. 삼성서울병원에 알레르기 증상으로 1998년 5월부터 2001년 8월까지 방문한 환자의 혈청 특이 IgE 항체를 대상 식품에 대해 CAP 시스템을 이용하여 조사하였다. 총 9054건의 CAP 검사가 난백, 난황, 우유, ${\alpha}-lactalbumin,\;{\beta}-lactoglobulin$, 카세인, 밀, 쌀, 메밀, 대두, 복숭아, 게, 새우, 돼지고기, 쇠고기, 닭고기, 참치, 연어, 고등어 및 혼합식품에 대해 1707명의 방문자를 중심으로 이루어졌다. 조사 결과 CAP 수치가 +2(0.7 U/mL) 이상인 값을 양성으로 판단하였으며 CAP 검사결과 11.3% (1022/9054건)가 양성이었다. 각 알레르기 원인 식품별로는 난백이 336건, 우유가 266건, 난황이 95건, 대두가 76건 ${\alpha}-lactalbumin$ 이 69건, 카세인이 61건, ${\beta}-lactoglobulin$이 58건, 메밀이 39건, 밀이 12건, 쇠고기 3건, 게 2건, 쌀, 새우, 돼지고기, 닭고기, 고등어 가 각각 1건, 복숭아, 참치, 연어 혼합식품이 각각 0건이었다. 우리나라에서 제일 많은 5대 알레르기 원인 식품으로 계란, 우유, 대두, 메밀 및 밀이 확인되었으며 환자 1인당 평균 2가지의 알레르기 원인 식품을 갖고 있는 것으로 확인되었다.

• 대한수학회보
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• 제54권4호
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• pp.1323-1330
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• 2017

For a nondegenerate projective irreducible variety $X{\subset}{\mathbb{P}}^r$, it is a natural problem to find an upper bound for the value of $${\ell}_{\beta}(X)=max\{length(X{\cap}L){\mid}L={\mathbb{P}}^{\beta}{\subset}{\mathbb{P}}^r,\;{\dim}(X{\cap}L)=0\}$$ for each $1{\leq}{\beta}{\leq}e$. When X is locally Cohen-Macaulay, A. Noma in [10] proves that ${\ell}_{\beta}(X)$ is at most $d-e+{\beta}$ where d and e are respectively the degree and the codimension of X. In this paper, we construct some surfaces $S{\subset}{\mathbb{P}}^5$ of degree $d{\in}\{7,{\ldots},12\}$ which satisfies the inequality $${\ell}_2(S){\geq}d-3+{\lfloor}{\frac{d}{2}}{\rfloor}$$. This shows that Noma's bound is no more valid for locally non-Cohen-Macaulay varieties.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1997년도 추계학술대회 논문집
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• pp.257-260
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• 1997

Bluetooth is the most promising network paradigm which ca open the new area in the information technology. Especially, bluetooth can link all the electrical products and PCs(Personal Computer) to cellular phone or PDA. In this paper, the data from ECU which are gathered by scanner are communicated between tow PCs using the bluethooth modules. The acquired data are ECU's self diagnosis signal and sensor output signal. Self diagnosis signals are very important to check the ECU's state and sensor output signals. Using these data, the possibility of wireless communication with ECU is developed and verified. Protocol stack of bluetooth is L2CAP through HCI and wireless communication software of ECU's signal is developed using VC++ in Windows 98 environment.

• 대한기계학회논문집
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• 제12권4호
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• pp.825-832
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• 1988

본 연구에서는 1차원 열흐름하에서 상부가 가열된 다공물질내의 열파이프 현 상과 관련하여 2상영역의 존재와 그 길이에 영향을 미치는 인자들을 실험적으로 관찰, 조사하였다.

• 한국강구조학회 논문집
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• 제27권2호
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• pp.155-167
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• 2015

춤이 깊은 데크를 6m 이상 장스팬 바닥에 사용할 경우에는 시공단계에서 데크의 발생하는 많은 처짐에 의한 작업자 및 시공안전을 고려하여 가설지주를 사용하는 것이 통상적이었다. 그러나 시공안전은 확보하였지만, 가설지주의 설치는 작업자의 통로제한, 공간의 협소, 능률의 감소 등으로 시공성의 문제가 발생한, 이는 춤이 깊은 데크는 상부 개방인 골 형태로 인한 벌어짐이나 박판으로 인한 웨브크리플링, 데크의 상부 플렌지의 국부처짐 등의 불안정성 문제가 발생할 수 있고, 이로 인해 개방형 데크의 횡-비틀림 좌굴과 같은 구조적 문제가 발생할 수 있다. 본 연구는 시공단계 동안 작용하중에 대한 춤이 깊은 데크의 제한 처짐 값을 제안하며, 장스팬의 구조안정성을 확보하고자 춤이 깊은 데크의 단부에 캡플레이트로 보강한 후 시공단계하중을 모래 재하 방법으로 실물실험 제작하여 실험을 실험하였다. 실험결과 개선안 캡플레이트 적용 유무에 따라 발생 처짐량이 최대 1/5 감소하였고, 모든 특히 단부를 연속화한 실험체의 경우, 처짐이 국내 규준과 제안 처짐 값(L/180, 30mm)을 만족하였다.

• 복식문화연구
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• 제3권2호
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• pp.193-199
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• 1995

The purpose of this research was to study the origins and the meanings of the Kokal (고깔). Comparative linguistic analytical approaches were employed to trace the development of the word, the Kokal(고깔). Results of this study revealed that the kotkal(곳갈, 곧갈) was a general term referring to a variety of head coverings in eh period of Choson Dynasty. This broad meanings of the Kotkal(곳갈,곧갈) of the Chosun Dynasty period has been changed to a narrow sense meanings a conical cap made of folds of the material, mainly used by some of the Buddhist monks in modern Korean. Also, the phonetic value of the Kotkal(곳갈,곧갈) of the Choson Dynasty period changed to the Kokal(고깔) in modern Korean. A variety of words for the Kokal(고깔) was found in the different languages such as Latin, English, French, Turkish, German, Mongolian, and Chinese. The examination and analysis of this study indicated that the origin of the Korean word Kotkal(곳갈,곧갈) or Kokal(고깔) and the meanings of it were derived from LL. Cuculla(monk's cowl)

• Design & Manufacturing
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• 제15권1호
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• pp.32-40
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• 2021

Mold design for in-mold coating was carried out to achieve simultaneous injection molding and two-color coating for car gas cap cover. The developed mold includes one core and three cavities which are composed of a substrate cavity and two coating cavities. To provide a sealing edge for complete seal during the second coating, the first coated material was used at the boundary between the first coating and the second one, and injection molded substrate was used at the parting line. The materials used were PC/ABS for substrate and 2-component Polyurea for coating. Through experiments, it was found that the suggested sealing edges were effective for complete seal during the second coating. In cavity pressure traces, there were three peaks caused by mold closing, coating-material injection and cleaning-piston advancement inside the mixing head. The cavity pressure increased with decreasing coating thickness.

• 대한수학회보
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• 제29권2호
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• pp.295-300
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• 1992

In [5] it was shown that if T .mem. L(X) is regular on a Banach space X, with finite dimensional intersection T$^{-1}$ (0).cap.T(X) and if S .mem. L(X) is invertible, commute with T and has sufficiently small norm then T - S in upper semi-Fredholm, and hence essentially one-one, in the sense that the null space of T - S is finite dimensional ([4] Theorem 2; [5] Theorem 2). In this note we extend this result to incomplete normed space.

• 대한수학회보
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• 제39권2호
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• pp.289-297
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• 2002

It was shown by L. Polterovich ([3]) that if L is a totally real submanifold of a symplectic manifold $(M,\omega)$ and L is parallelizable then L is normal. So we try to find an answer to the question of whether there is a compatible almost complex structure J on the symplectic vector bundle $TM$\mid$_{L}$ such that $TL{\cap}JTL=0$ assuming L is normal and parallelizable. Although we could not reach an answer, we observed that the claim holds at the vector space level. And related to the question, we showed that for a symplectic vector bundle $(M,\omega)$ of rank 2n and $E=E_1{\bigoplus}E_2$, where $E=E_1,E_2$are Lagrangian subbundles of E, there is an almost complex structure J on E compatible with ${\omega}$ and $JE_1=E_2$. And finally we provide a necessary and sufficient condition for a given embedding into a symplectic manifold to be normal.

• 대한수학회보
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• 제33권4호
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• pp.537-544
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• 1996

Crofton's formula on Euclidean plane $E^2$ states: Let $\Gamma$ be a rectifiable curve of length L and let G be a straight line. Then $$ \int_{G \cap \Gamma \neq \phi} n dG = 2L $$ where n is the number of the intersection points of G with the curve $\Gamma$.