• Journal of Advanced Navigation Technology
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• v.18 no.4
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• pp.376-380
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• 2014

In the present study, oblique L-shaped monopole slot antenna with broadband characteristic is newly proposed. For bandwidth enhancement as well as size reduction, L-shaped slot with two open-terminations on the ground edge is used. The lower part of L-shaped slot comprises oblique form for bandwidth enhancement in low frequency band, whereas its higher part comprise tapered form for its enhancement in high frequency band. The short-circuit terminated microstrip line which is generally known to be more useful for bandwidth enhancement than open-circuit termination is used. The measured impedance bandwidth($S_{11}{\leq}-10dB$) and gain of the fabricated antenna have been observed to be 4.72 GHz (2.28~7 GHz) and more than 3dBi over the passband respectively.

• Journal of Advanced Navigation Technology
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• v.13 no.6
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• pp.838-845
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• 2009

In order to obtain magneto-dielectrics with various permmittivity and permeability which could be used as the antenna substrate, various magneto-dielectrics compounded of dielectric materials(such as silicon and epoxy resin) and magnetic materials(such as carbonyl iron, barium and strontium powder) were fabricated. The relative permittivity and permeability of those were measured by use of HP 4291B impedance analyzer. Based upon the measured results, inverted-F meander monopole antennas(IFA) which were printed on the magneto-dielectric substrates fabricated as film type were designed and fabricated to investigate into variations of antenna characteristics such as the resonant frequency and impedance bandwidth in comparison with use of dielectric substrate. Some simulated and measured results for the designed IFA were presented. Characteristics of magneto-dielectrics which are different according as the choice of magnetic material or the composition ratio between magnetic material and dielectric material is different have been discussed.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.42 no.6
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• pp.522-528
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• 2014

A UHF/VHF full-duplex communication using monopole and dipole antenna has been widely used for cube satellite applications. This kind of communication system requires a dedicated structure panel for antenna integration, which is the one of the disadvantages of the conventional communication system from the accommodation point of view considering the extremely limited volume of the cube satellite. In this study, to maximize the accommodation efficiency of the cube satellite, the commercial UHF half-duplex antenna combined with buck converter for communication modes transition has been considered in the communication system design. Its effectiveness has been verified through link budget analysis based on the antenna specifications and satellite's operation conditions. In addition, the antenna deployment mechanism for the synchronous release of multi-antennas has also been introduced.

• Journal of Korean Society of Environmental Engineers
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• v.35 no.12
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• pp.960-966
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• 2013

In this study, operation data from an actual plant in M city were analyzed to evaluate effects of water supply into sewage sludge on the co-incineration of municipal solid waste (MSW) and sewage sludge. Design capacity of the stoker incinerator is 50 m3/day. Maximum portion of sewage sludge in the total waste input was 20%. According to this research, moisture content increase up to 85% of sewage sludge could be possible by water supply on MSW input to the incinerator. Therefore, stable operation of incinerator could be achieved. As water was added into sewage sludge up to 85%, input quantity of sewage sludge to frequency (Hz) was similar to theoretical input. Also, it is concluded that stable management of incinerator without leachate combustion and damages of refractory bricks and castable could be achieved by the reduction of low heating value.

• Journal of the Korea Fashion and Costume Design Association
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• v.11 no.1
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• pp.99-109
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• 2009

한 후란 중국의 전통 복장을 말하는 것이다. 한 장 (漢裝) 이라고도 하며 고대 복장이라고도 한다. 영어로는 silk robe라고도 한다. 한 후는 한 나라 이후 명나라까지 만주가 정복하기 전인 1644년까지 입혀졌던 중국의 전통복장이다. 최근 중국에서도 전통복장에 대한 새로운 모색이 일어나고 있다. 중국 전통복식으로 대표되는 치파오는 만주족의 한족 말살 정책의 일환으로 간소화시킨 복식이다. 따라서 중국 전통의복은 만주족에 의해 사양길을 가기 전 고대 한 조의 복식이 중국전통을 대표한다고 할 수 있다. 전통적인 한 후 스타일은 벨트를 매며 여밈이 있고 좁은 소매 혹은 넓은 소매가 특징이다. 한 족이 한 나라, 상 왕조, 송나라, 당나라때 입었던 한 후가 중국의 복식을 대표하는 복식이며 주나라의 쉔의는 튜닉과 스타일의 결합으로서 아직도 상류그룹이 입고 있다. 당나라에서는 동방의 문화와 혼합되어 화려하거나 사치스럽게 수정되었고 만주가 침범하여 한 후는 더 이상 전통복으로 입히지 못하였다. 한 후의 현대적 의미를 볼 때 역사적으로는 베트남에서 기모노에 이르기까지 그 원형을 볼 수 있고 한 후를 통해 중국전통 복식의 원류를 찾을 수 있다. 연구방법으로 문헌과 시각자료를 활용하였다. 한 후의 현대적 의미는 전통의 새로운 자각과 세계화 현대화의 노력이라 할 수 있다. 치파오로 규정된 중국복식에 반해 전통 한 후에 대한 올바른 인식과 활용은 세계화와 오리엔탈이미지에 녹아 있는 한 후 디자인 디테일을 통해 현대적 모색을 활용하고 있다. 충분한 시각 자료가 부족하지만 현대적 노력이 앞으로의 중국이미지의 재고를 가져올 것이다.

• Journal of the Korean Society of Tobacco Science
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• v.28 no.1
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• pp.43-50
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• 2006

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.

• Journal of Fashion Business
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• v.1 no.2
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• pp.74-85
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• 1997

폴 푸아레 (1879-1944)가 패션 역사상 혁명적이라고 할 수 있는 여성의 코르셋을 제거시켰다는 것은 익히 알려진 사실이다. 그리고 그러한 결과로 인해 발생된 새로운 직선형의 실루엣에 화려한 색채와 장식을 하여 이전 시대와는 전혀 다른 현대패션의 근원이 되었다. 본 연구는 푸아레의 새로운 직선 실루엣과 화려한 색채와 경이적 장식의 근원이 다름아닌 동양이라는데 중점을 두었다. 이미 국내의 몇편의 논문에서 이러한 논의가 지적되어 왔으나 다른 논제를 다루는 중에 언급이 되었고 당시의 작품이나 동시대의 자료를 분석한 것이 아닌 근래의 출판물에 의존한 연구가 대부분이었다. 따라서 본 연구에서는 그의 동양풍 디자인의 근원을 밝히는데 있어 가능한한 1 차적 자료의 접근을 시도하였다. 1912년 작품인 이브닝 드레스, 터번, 숄, 구두 각 1점과 그의 작품 의도와 생애의 추구를 말해주는 자서전(1930년 불어본 및 1931년 영어본)과 보그(Vogue)지의 기사(1920년 2월호, 9월호) 등을 통하여 그의 동양에 대한 관심을 살펴보았다. 그 결과 푸아레의 동양 영향의 근원은 19세기 말 유럽에서 절정을 이룬 'Sino-Japonism'(중국-일본주의)의 심취, 러시아 발레단의 의상과 색채, 천일야화의 영향에 의한 중동(페르시아)에 대한 열망, 그리고 인도 토민병의 복식에서 비롯된 터번에의 매료 등이었음을 알 수 있었다. 이러한 근원에서 탄생된 디자인으로는 직선형의 튜닉, 기모노 소매(처음엔 푸아레 자신도 중국의 것으로 혼동을 하기도 했지만), 하렘팬츠, 비대칭적인 카프탄식의 코트, 원색의 사용, 극동지역의 직물과 문양, 술장식, 터번 등으로 나타내었다. 따라서 폴 푸아레의 동양적인 관심은 단지 개인적 '취향 혹은 취미(taste)'가 아니라 한 시대양식으로 자리잡은 '동양주의(Orientalism)'라 할 수 있으며 이러한 푸아레의 동양주의는 당시의 패션에 있어 신체의 선을 부정하여 코르셋을 제거 시키게한 그의 모더니즘의 근거가 된다. 본연구의 제한점으로 1차적 자료를 수집하는데에 있어 보다 폭넓지 못했던 점을 밝혀둔다.

• Fashion & Textile Research Journal
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• v.13 no.1
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• pp.32-43
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• 2011

This study investigate the transition about Japanese national costume kimono. The prototype of the present kimono is a kosode. The origin of kosode dates back to the mid-Heian period, when this type of kimono served as the everyday wear of commoners and an undergarment for court nobles, both men and women. In the Muromachi period, particularly after the Onin war, the kosode began to be by people of all classes. In the Muromachi period, kosode consisted mainly of woven textiles. In the Momoyama period, kosode became very elaborate, employing such various techniques as tie-dyeing, embroidery, metallic leaf(surihaku) and free-hand painting. These were further combined resulting in such techniques as tsujigahana dyeing and nuihaku, which are now considered to epitomize Momoyama-period textile design. A category of kosode of the early Edo period, known as Keicho kosode, is fashioned mainly from black, white, or red figured satin(rinzu), or from figured satin segmented in these three colors. Books of kosode designs began to be published in the Kambun era, when the merchant class was becoming economically powerful, kosode began to reflect its taste. During its final stage of development in the late 17th and early 18th centuries, yuzen dyeing achieved wide acceptance. From the late 18th century toward the early 19th century, kosode worn by the merchant class underwent drastic changes, while those worn by the samurai class changed little. In the after the late 18th century, clear differences in design and decorative methods appeared between the kosode worn by rich merchants and those worn by middle and lower class merchants.

• Journal of the Korean Vacuum Society
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• v.8 no.1
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• pp.13-19
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• 1999

Total reflection X-ray fluorescence spectroscopy using synchrotron radiation source called as TRSFA was explored to achieve high sensitivities to impurity metals on Si wafer surface. It consists of monochromating part to select a specific wavelength, slit part to shield direct beam and to control monochromated beam, and main chamber to dectect fluorescent X-ray counts of impurities on si wafer. Monochromated X-ray of 10.90 KeV was selected and the optimum total reflection condition on silicon wafer was obtained through tuning the dead time and fluorescent X-ray count of Si and Fe. TRSFA system could increase the sensitivity as high as 50 times in comparision with TRXFA using normal X-ray source. But the trend was varied since the surface conditions of Si wafers and, therefore, the reflectivities were different. Furthemore, there seems to be a promising path to reaching a detection limit useful to the next generation metal impurities control, because Fe impurity below to the $5\times10^{9}\textrm{atomas/cm}^2$ can be detectable through the developed TRSFA system.

• Journal of Pharmaceutical Investigation
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• v.28 no.2
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• pp.73-80
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• 1998

In order to elucidate the effect of N-demethylation on the in vivo metabolite kinetics, especially hepatic first-pass effect of trimebutine(TMB), the N-demethylation of TMB to N-monodesmethyl trimebutine(N-TMB) was studied in rats. TMB(10 mg/kg) and N-TMB(10 mg/kg) were injected into the femoral and the portal vein, respectively. And the pharmacokinetic parameters were obtained from the plasma concentration-time profiles of TMB and N-TMB determined by the simultaneous analysis using high-performance liquid chromatography. It was supposed that these drugs were almost metabolized in vivo because the urinary and biliary excreated amounts of TMB and N-TMB were lower than 0.1% of the administered dose. According to the hepatic biotransformation model and metabolic pathways of TMB proposed, it was found that the fraction of systemic clearance of TMB which formed N-TMB in liver$(G_{mi})$ was 0.826, that of TMB which furnishes the available N-TMB to the systemic circulation$(F_{mi})$ was 0.083, and the absolute hepatic bioavailability of N-TMB formed trom TMB$(F_{mi.p})$ was 0.1. These results showed that TMB was suspected of the sequential hepatic first-pass metabolism and N-demethylated by 82.6%. Therefore, the residue would be hydrolyzed by the esterase in the liver. That is, the ability of N-demethylation of TMB was 4.75-fold larger than that of hydrolysis by the esterase in rats.