연령증가에 따른 혈압요소들의 좌심실비대 및 관동맥질환과의 관련성

박재석,박창규,박미영,박재형,김용현,나진오,신성희,서순용,홍순준,박성미,임홍의,김응주,서홍석,오동주,노영무 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

컬러모니터의 색상선호도 평가방법에 관한 연구

최재호 ( Jae Ho Choe ),박승옥 ( Seung Ok Park ),김흥석 ( Hong Suk Kim ) 한국감성과학회 1998 춘계학술대회 Vol.1998 No.-

This study investigated the evaluation method for the users`` color preference of CRT monitors. And also the users`` preference of the colors displayed on CRT monitor using the park``s color reproduction system was evaluated. Subjects conducted a series of psychophysical experiments to compare the colors displayed on a CRT monitor using the park``s system to the colors without the system, Three evaluation methods were investigated: comparing one colors of same hue with diverse luminance and saturation. the results showed that subjects preferred the colors reproduced using the park``s system, and thd evaluation methods significantly affected thd color preference.

칼라모니터의 색보정을 위한 분광복사 스펙트럼의 규격화

朴勝玉,朴正萬,金洪錫,辛鉉德,林在權 대진대학교 1994 大眞論叢 Vol.2 No.-

To obtain the spectral characteristics of a color monitor, we measured the spectral radiance curves of phosphors vs. digital values experimentally. The relationship between digital values and luminances is not linear. To predict the digital values needed to display specific colors, we presented a model using maximum and averaged values of each curve.

내구유연발수제에 관한 연구(Ⅳ) : 아크릴 공중합체를 주제로 하는 발수제의 P/C혼방직물에의 발수처리 Water Repelling Treatment of P/C Blended Fabrics with Water Repellents Based on Acrylic Copolymer

박홍수,조경규,오석조,편무실 明知大學校 産業技術硏究所 1993 産業技術硏究所論文集 Vol.12 No.-

To prepare a durable softening water repellent, quaternized stearyl methacrylate-2-diethylami-noethyl methacrylate as a mother resin and quaternized 1-behenoylaminoethyl-2-docosyl imidazo-line which increase the softening effect and the hydrostatic pressure blended with waxes and their emulsifier in various proportions to give water repellent PPSBC. As the results of the measurement of water repellency. washable, tear strength and crease recovery to polyester-cotton(P/C) blended fabrics treated with PPSBC only or addition of textile finishing resin, the physical properties were increased. there was no significant lowering effect in water repellency when PPSBC was treated the antistatic agent by the one-bath method. and the effect of water repellency by the adding the catalyst was studied. PPSBC was confirmed as durable water repellent with the results of making little difference of water repellency as±5 point after and before washing. And, the water repellency mechanism of P/C blended fabrics treated with PPSBC was also discussed in detail.

고정식 교정 환자에서 전동치솔 효과에 관한 연구

박창헌,이기헌,황현식,홍석진 전남대학교 치의학연구소 2002 구강과학 Vol.14 No.4

Patients with fixed orthodontic appliances frequently have increased levels of plaque accumulation leading to the possibility of gingivitis or enamel decalcification. Although many methods may be helpful in reducing dental plaque formation, optimal mechanical removal of plaque is tile most important factor during orthodontic treatment. The porpose of this study was to evaluate the efficacy of'an electric toothbrush, with a specially designed orthodontic brush head. compared with a manual toothbrush in controlling plaque and gingivitis for patients with fixed orthodontic appliances. Oral hygiene status was measured in thirty four patients, using a plaquc index, a gingival index and a bleeding index. before and four weeks after attachment of fixed orthodontic appliances. Patients were randomly divided into two groups, the electric and the manual toothbrush groups. Oral hygiene instruction was given according to the type of toothbrush used. The Braun Oral-B D9511 with Braun Oral-B Ortho OD 15-1 brush head was used as the electric toothbrush while the Butler G.U. M 124 was given as the manual toothbrush. After 4 weeks and 8 weeks, oral hygiene status was measured again. Through the comparison berween the electric and the manual toothbrush grpups. following results were obtained. 1. All oral hygiene indices showed increasing tendency after 4weeks of fixed orthodontic appliances. 2. All indices presented decreasing tendency four and eight weeks after oral hygiene instruction. 3. In case of gingival index and bleeding index. decreasing tendency did not show a statistically significant difference between the electric and the manual toothbrush groups. 4. The decreasing tendency of plaque index presented statistically significant difference between the two groups. showing that the electric toothbrush was more effective in terms of oral hygiene. These findings suggest that an electric toothbrush is useful to the orthodontic patients with fixed appliances.

Linear Combination Analysis Using GPS Data

Park, Woon-Yong,Lee, Dong-Rak,Back, Ki-Suk,Hong, Jung-Soo 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2

We can process and compute the position, velocity and time by satellite signals of GPS. The signals are used to compute positioning of three dimensions and timing offset of the receiver clock when we can track the tour satellite signals at least. One of the specified aims is to use less expensive single frequency code/carrier phase GPS receivers, which are typically around half the price of dual frequency receivers. In the study, the author analyzed the accuracy and applicability of frequence linear combination using triangulation points evaluated distance limitation.

콩의 개화기전후 공급과 수용부위의 무기영양성분함량 및 흡수량에 대한 질소의 효과

박재홍,송범헌,이철원,손석용,김홍식,박상일 忠北大學校 農業科學硏究所 2002 農業科學硏究 Vol.19 No.-

This study was conducted to examine the nitrogen effects on the uptaken amounts and utilization of mineral nutrients between source and sink tissues at major growth stages before and after the flowering stage with different nitrogen levels Hwangkeum cultivar(Glycine max L Mereill) was cultivated under five different mtrogen levels, 0, 2, 4, 6, 8 N kg/10a Comparing contents of total-N with different plant tissues at major growth stages before and after the flowering, total-N contents of leaves was gradually decreased from the flowering to the beginning maturity, while it of pod was continuously increased from the full seed to the beginning maturity Total-N content was higher in the treatment of 4 N Kg/10a that those of others The uptaken amount of N determined with different growth stage was rapidly increased maturity Higher proportion of uptaken N were into the leaves at the full seed stage, and they were transported from the leaves into pod at the beginning maturity stage Comparing major mineral elements of the leaves and the pod with different N leaves, in case of the leaves, the content of Fe, Mn, and Zn was decreased throughout the growth stages, whereas the content of Ca and Mg was decreased from the flowering to the full seed and then it was increased after the full seed stage In case of pod, the content of K, Fe, Mn, Zn, and Na was decreased from the flowering to the beginning maturity, while contest of Mg was increased.

동북아시아 다자안보협력체 구축 방안

박홍석,이현경 동아대학교 동아시아연구원 2006 동아시아 : 비교와 전망 Vol.5 No.-

본 논문은 동북아시아 다자안보협력체 구축 방안을 제시하는 데 그 목적을 두고 있다. 이를 구체화하기 위해 동북아시아와 한반도 지역에서의 미 · 일 · 중 · 러의 각축을 살펴보고. 동북아시아 다자안보협력체 창설에 대한 관련국들의 입장과 그 형성 방안을 제시한다. 아시아 태평양의 전 지역을 비교해 볼 때 동북아시아 지역의 다자협력 구도는 아직 미미한 상태다. 미 · 일 · 중 · 러 및 남한은 동북아시아의 평화와 안점을 위해 다자안보협력체의 창설 필요성에 공감하고 있으나 이 기구 창설을 위한 강한 의지를 보이고 있 지 않다. 그런데다 이 지역은 역내 국가들간 힘의 분포, 군비경쟁, 공통의 안보이익 부재, 각기 다른 안보적위협인석, 지역분쟁 및 영토분쟁 상존, 정치군사적 이해가 상충되어 있다. 더군다나 역사 · 정치 · 문화적 전통 등에 대한 공통성이 부재하고 상이한 문화 와 가치관이 존재한다. 그래서동북아시아 지역에 유럽형의 다자안보협력체를 형성하기가 쉽지 않다. 하지만 이 지역에 다자안 보협 력체가 구성되면 영전의 구도를 허물고 분쟁예방, 위기관리 갈등해소, 비군사적 안보위협 대처에 기여할 것이다. 동북아시아 다자안보협력체 구축이 현 단계에선 어렵다하더라도 역내 국가들이 CSCAP,ARF, NEACD 등 비정부간 안보협의체와 공동보조를 취하고 대화의 장을 넓혀 나간다면 다자안보협력체 창설을 위한 기반을 마련할 것이다. 이러한 토대 위에 역내 국가 들이 경제 · 환경·과학·기술 등 비정치군사적 사항에 효과적으로 대응함으로써 불안정성과 불확실성을 감소시키고 상호 신뢰를 구축 해 나간다면 동북아시아 다자안보협력체는 구축될 것이다. 그것은 동북아시아 평화체제를 구축하는 사전 단계이며, 세력균형의 틀 내에서 지역의 평화와 안점을 추구할 수 있다.

고정식 교정 환자에서 전동치솔 효과에 관한 연구

박창헌,황현식,이기헌,홍석진 대한치과교정학회 2004 대한치과교정학회지 Vol.34 No.4

고정식 교정장치를 부착한 경우 장치주위의 치태 축적 가능성이 증가되고 이로 인해 치은염, 법랑질 탈회 등의 부작용이 초래 될 수 있는 바 치태 제거를 위한 효과적인 치솔질이 필요하다. 본 연구는 교정환자에서 일반적으로 사용되고 있는 치솔에 비하여 전동치솔이 구강위생에 도움이 되는지 알아보기 위하여 시행되었다. 고정식 장치에 의한 교정치료 예정인 환자 34명을 본 연구의 대상으로 하여 고정식 교정장치 부착 전에 치태지수, 치은염지수, 치은출혈지수를 측정하였다. 장치 부착 4주 후에 각 지수를 측정한 다음, 연구대상을 치솔의 종류에 따라 전동치솔군과 수동치솔군으로 임의 구분하여 수동치솔 또는 전동치솔을 사용하도록 구강위생교육을 각각 시행하였다. 이때 전동치솔의 경우 본체는 Braun Oral-B D9511을 브러쉬 헤드는 Braun Oral-B Ortho OD 15-1을 사용하게 하였으며, 수동치솔의 경우는 Butler G.U.M 124를 사용하게 하였다. 구강위생교육 4주 및 8주 후에 각 지수를 측정한 다음 시간 경과에 따른 전동치솔군과 수동치솔군의 구강위생 상태를 비교 분석하여 다음과 같은 결과를 얻었다. 1. 고정식 교정장치 부착 4주 후 치태지수, 치은염지수, 치은출혈지수 모두 증가 양상을 나타내었다. 2. 구강위생교육 후 치태지수, 치은염지수, 치은출혈지수 모두 감소 양상을 나타내었다. 3. 치은염지수, 치은출혈지수의 경우 감소양상이 수동치솔과 전동치솔군 간의 유의한 차이를 보이지 않았다. 4. 치태지수의 경우 수동치솔에 비해 전동치솔군에서 감소효과가 유의하게 크게 나타났다. 이상의 연구 결과는 고정식 교정장치로 치료받는 환자에서 전동치솔이 구강위생에 도움이 됨을 시사하였다. Patients with fixed orthodontic appliances frequently have increased levels of plaque accumulation leading to the possibility of gingivitis or enamel decalcification. Although many methods may be helpful in reducing dental plaque formation, the optimal mechanical removal of plaque is the most important factor during orthodontic treatment. The purpose of this study was to evaluate the efficacy of an electric toothbrush (with a specially designed orthodontic brush head) compared to a manual toothbrush in controlling plaque and gingivitis for patients with fixed orthodontic appliances. Oral hygiene status was measured in thirty-four patients using a plaque index, a gingival index and a bleeding index, before and four weeks after the attachment of fixed orthodontic appliances. Patients were randomly divided into two groups: electric and manual toothbrush groups. Oral hygiene instruction was given according to the type of toothbrush used. The Braun Oral-B D9511 with Braun Oral-B Ortho OD 15-1 brush head was used as the electric toothbrush while the Butler G.U.M. 124 was given as the manual toothbrush. After four and eight weeks, oral hygiene status was measured again. Through a comparison between the electric and the manual toothbrush groups, the following results were obtained. 1. All oral hygiene indices showed an increasing tendency after four weeks of fixed orthodontic appliance. 2. All indices presented a decreasing tendency four and eight weeks after oral hygiene instruction. 3. In case of the gingival index and bleeding index, the decreasing tendency did not show a statistically significant difference between the electric and the manual toothbrush groups. 4. The decreasing tendency of plaque index presented a statistically significant difference between the two groups, showing that the electric toothbrush was more effective in terms of oral hygiene. These findings suggest that an electric toothbrush is useful to orthodontic patients with fixed appliances.

美國의 國制經濟政策 決定過程의 分析모델에 관한 硏究

朴鴻錫 동아대학교 사회과학대학 1988 사회과학논집 Vol.6 No.-

In this paper, we have examined several aspects of U. S. foreign economic policymaking, focusing on the various models of policymaking and on the institutions and actors of protectionism. In the first section, the concept of "foreign economic policymaking" was briefly defined in order to clarify the main focus of the subject. Although the concept can be expanded to cover international trade, finance, investment, aid, energy, and so on, we have intentionally narrowed the concept down to only the international trade and protectionism. After that, the following models of U. S. foreign economic policymaking were explained in detail with many empirical evidence : individual (persona1ity)model ; bureaucratic politics model ; shared perception model ; single-agency domination model ; multiple-advocacy model ; and linkage model. In the latter part of the paper, the institutional arrangement and major actors of U. S. protectionism were carefully explained. Finally, in the conclusion and summary, the models were again examined to see if the protectionist events in the 1970s and 1980s could fit into the model. However, by nature of the foreign economic policymaking, we have found it difficult to make any typology about the relationship. A reasonable attempt to do that seemed to make a very broad and general categorization which could only explain the very nature of the model in the first place.