• Composites Research
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• 제23권2호
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• pp.31-39
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• 2010

In this paper, composite panels with hat-shaped stiffeners were made using the co-curing, co-bonding and secondary bonding methods. Co-curing is a manufacturing method in which the hat part and the plate are cured simultaneously in a manner that is more cost effective than other methods. Co-bonding is a method in which the stacked prepregs are cured with other cured parts, and secondary bonding is a method in which cured parts are bonded together using an adhesive. A rubber mold was manufactured for co-curing of composite panel with hat-shaped stiffeners, and finite element analyses were done to evaluate the expanding pressure of the rubber mold consistent with the curing temperature. The manufactured panels were also evaluated using a 3-D measurement tester and an ultrasonic tester. Pull-off tests were performed to evaluate their mechanical properties.

• Applied Chemistry for Engineering
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• 제26권6호
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• pp.725-729
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• 2015

Organic light emitting diodes (OLEDs) are regarded as the next generation display and solid-state lighting due to their superb achievements from extensive research efforts on improving the efficiency and stability of OLEDs in addition to developing new materials. Herein, efficient green phosphorescent OLEDs were obtained by using hexaazatrinaphthylene (HAT) derivatives as a hole injection layer. External quantum and current efficiencies of OLEDs were enhanced from 8.8% and 30.8 cd/A to 13.6% and 47.7 cd/A, respectively by inserting a thin layer of HAT derivatives between the ITO and hole transporting layer. The enhancement of OLEDs was found to be originated from the inserted HAT derivatives, which resulted in the optimized hole-electron balance inside the emission layer.

• Journal of the Korean Data and Information Science Society
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• 제24권3호
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• pp.465-475
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• 2013

Higher quality level is generally perceived by customers as improved performance by assigning a correspondingly higher satisfaction score. Usually, the quality level is measured by process capability indices. The index is used to determine whether a production process is capable of producing items within a specified tolerance. Some useful process capability indices $C_p$, $C_{pk}$ and $C_{pm}$ have been widely used in six sigma industries to assess process performance. Most evaluations on process capability indices focus on point estimates, which may result in unreliable assessments of process performance. It is necessary to investigate their asymptotic correlationship among process capability indices $\hat{C}_p$, $\hat{C}_{pk}$ and $\hat{C}_{pm}$. In this paper, we study their asymptotic correlationship for some process capability indices $\hat{C}_p$, $\hat{C}_{pk}$ and $\hat{C}_{pm}$ under the normal process.

• Koreanishche Zeitschrift fur Deutsche Sprachwissenschaft
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• 제10집
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• pp.251-275
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• 2004

In diesem Aufsatz geht es um die Frage. womit Leo Weisgerber seine Sprachtheorie entwickelt hat. Er wurde von mehreren Theoretikern und Wissenschaftlern $beeinflu{\ss}t$, wie z. B. Wilhelm von Humboldt, Ernst Cassirer, Wilhelm Wundt, Ferdinand de Saussure usw. Aber in einigen besonderen Bereichen seiner Sprachtheorie wurde or besonders von F. de Saussure stark $beeinflu{\ss}t$. Leo Weisgerber hat sehr viele $Aufs\"{a}tze$ und $B\"{u}cher$ geschrieben. Aber darunter gibt es einige Werke, die seine Sprachtheorie zusarnmenfassend darstellen. Sie sind die folgenden: seine Habillitationsschrift(1925), Muttersprache und Geistesbildung(1929), Grundzuge der inhaltbezogenen Grammatik(1962). Wir haben daher versucht, zu erfurschen, welchen Einfluss Saussure auf diese Werke Weisgerbers ausgeubt hat. In der Habilitationsschrift konnten wir herausfinden, $da{\ss}$ Weisgerber die $Ans\"{a}tze$ Sausssures kritisierend aufgenommen hat. Wahrend Saussure Sprache nicht als einen Organismus betrachtet $h\"{a}lt$ Weisgerber Sprache $f\"{u}r$ einen lebendigen Organismus. $Dar\"{u}her$ hinaus ist nach Weisgerber die Unterscheidung, zwischen langue und parole $unn\"{o}tig$. Leo Weisgerber hat in dem Buch 'Muttersprache und Geistesbildung' seine Zeichen-Theorie zusammenfasst. Da war or damit einverstanden, $da{\ss}$ ein Zeichen aus signifiant und signifie besteht. $Au{\ss}erdem$unterscheidet or Sprache, $\"{a}hnlich$ wie Saussure, wie folgt : das Sprechen, der Sprachbesitz des einzelnen, Sprache als Kulturbesitz einer Gemeinschaft, das allgemein menschliche Prinzip Sprache im Sinne der fuel die Menscheit kennzeichnenden Sprachtaetigkeit. In 'Grundzugo der inhaltbezogenen Grammatik' stellt or dar, wie die Untersuchung der Sprachinhalte $durchgef\"{u}hrt$ werden soll. Nach ihm ist ein Wortinhalt immer $erkl\"{a}rbar$, durch ein Wert in einem Wortfeld. Dieser Begriff 'Wert' entstammt vom 'valour', den Saussure gemacht hat. Aber die Zeichentheorie Weisgerbers ist ein $bi{\ss}chen$ anders geworden. $W\"{a}hrend$ Saussure ein zweidimensionales Zeichenmodel (signifiant und signifie) aufstellt, stellt Weisgerber ein dreidimensionales Zeichenmodell dar, das aus drei Elemente (Lautform - geistige Zwischenwelt - $Au{\ss}enwelt$) besteht. Aus diesen Ergebnissen der Untersuchung konnen wir $schlie{\ss}en$, $da{\ss}$ Weisgerber mehr oder weniger von F. do Saussure beeinflusst wurde.

• Journal of the Korea Fashion and Costume Design Association
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• 제18권4호
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• pp.141-158
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• 2016

The objective of this study is to examine the type and characteristics of hat, and also to analyze the formative characteristics of hats shown in $Pr{\hat{e}}t-{\grave{a}}$-porter Collection. The literature review focused on the relevant technical books and preceding researches while the case study targeted 1,561 photos of hats shown in the 'Donga TV Collection'. The research range was from the S/S season of 2012 to the F/W season of 2015/16. The results of this study are as follows. 1. A hat is composed of crown and brim. In the results of classifying hats based on it, there were 572 crown-type hats, 533 hat-type, 219 cap-type, 156 irregular-type, and 81 brim-type in the order. 2. For the crown-type hats, they were mainly like cylindrical-type, bell-type, dome-type, and circle-type, using colors like black, beige, brown, red, mustard, and grey, and materials like wool, fur, velvet, straw, and metal while they were decorated with bead or lace. 3. For the hat-type hats, they were mainly like bell-type, ladder-type, and hemisphere-type, using colors like peach, white, gold, brown, and khaki, and materials like silk, cotton, straw, and wool while they were decorated with feather and ribbon. 4. For the cap-type hats, they were mainly like hemisphere-type, using colors like white, black, khaki, mustard, and purple, and materials like fur, leather, and wool while they were decorated with wappen and chain. 5. For the irregular-type hats, they were mainly like sandglass-type, box-type, animal-type, trumpet-type, and bell-type, using colors like purple, orange, pink, yellow, and sky-blue, and materials like metal, feather, mesh, plastic, straw, and linen while they were decorated with ribbon, net, bell, and flower. 6. For the brim-type visor, they were mainly like square-type, using colors like transparent, yellow, and black, and materials like plastic, cotton, leather, and metal.

• International Journal of Naval Architecture and Ocean Engineering
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• 제10권1호
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• pp.85-94
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• 2018

For the design of wind-power facilities, the highest and lowest astronomical tides (HAT and LAT, respectively) are needed for the tidal-water levels regarding international designs; however, the approximate highest high water and approximate lowest low water AHHW and ALLW, respectively, have been used in Korea. The HAT and LAT in the wind-farm test-bed sea should be estimated to satisfy the international standard. In this study, the HAT and LAT are therefore estimated using the hourly tidal-elevation data of the Eocheongdo, Anmado, Younggwang, Gunsan, Janghang, and Seocheon tidal-gauging stations that are located in the adjacent coastal sea. The nodal variation patterns of the major lunar components, such as $M_2$, $O_1$, and $K_1$ are analyzed to check the expected long-term lunar cycle, i.e., 18.61 year's nodal-variation patterns. The temporal amplitude variations of the $M_2$, $O_1$, and $K_1$ clearly show the 18.61-years periodic patterns in the case of the no-nodal correction condition. In addition, the suggested HAT and LAT elevations, estimated as the upper and lower confidence limits of the yearly HAT and LAT elevations, are 50 cm greater than the AHHW and 40 cm lower than the ALLW, respectively.

• Journal of Korean Society of Forest Science
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• 제12권1호
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• pp.1-11
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• 1971

The present study was carried out in order to investigate seasonal variation in tannin, sugar and protein contents of persimmon fruits, Five varieties of Diospyros kaki Thunberg, i. e, Buyoo, Wolha, Kapjubackmok, Pyungmuhek, Heuksi, and Goyom (Diospyros Lotus Linne var. typica Makino) growing in Jeonbug area were used as the experimental material. The result are summarized as follow; 1. Maximum tannin contents were 4% in Buyoo, 5.46% in Wolha, 5.4l% in Kapjubackmok, 5.1 % in Pyungmuhek, 9.2% in Heuksi, and 26.1% in Goyom, respectively. Therefore, Heuksi and Goyom were considered to be the most useful as tannin material. 2. The most suitable season for tannin extraction was thought to be July with most varieties but it was August with Goyom. 3. The total sugar contents seemed to increse linearly. Linear regressions are as follows. Buyoo ; $\hat{Y}=0.2394x+3.861$ Wolha ; $\hat{Y}=0.3093x-1.148$ Kapjubackmok ; $\hat{Y}=0.3173x-1.3708$ Pyungmuhek ; $\hat{Y}=0.2796x+0.982$ Heuksi ; $\hat{Y}=0.3233x-3.242$ Goyom ; $\hat{Y}=0.1555x-4.780$ 4. Average crude protein contents of fruits through the year were 5.32% in Buyoo, 4.97% in Kapjubackmok, 4.49% in Goyom, 4.11% in Wolha, 4.02% in Heuksi, and 3.6% in Pyungmuhek, respectively. 5. The crude protein contents tend to decrease gradually after fruit setting.

• Journal of the Korean association of regional geographers
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• 제19권4호
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• pp.627-640
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• 2013

Cette $\acute{e}$tude a pour objet d'analyser le processus de morphogen$\grave{e}$se de l'$\hat{I}$le rocheuse de Baek. Nous y voyons une cl$\acute{e}$ pour apprendre son relief marin et le processus de morphogen$\grave{e}$se des l'$\hat{I}$les m$\acute{e}$ridionales de Cor$\acute{e}$e du Sud. Le granit porphorique qui compose l'$\hat{I}$le rocheuse de Baek est une roche magmatique qui s'est form$\acute{e}$e il y a 60 million d'ann$\acute{e}$es. La cause principale de formation de l'$\hat{I}$le rocheuse de Baek, est une ligne de d$\acute{e}$lit vers le NE-SO et l'ENE-OSO, un soul$\grave{e}$vement de la plaque tectonique et une $\acute{e}$rosion par les vagues. L'$\hat{I}$le rocheuse de Baek pr$\acute{e}$sente un caract$\grave{e}$re d'$\acute{e}$ruption de magma de calc-alcalin par analyse g$\acute{e}$ochimique de son granit porphorique et fait partie du granit de l'arc volcanique. Il s'agit d'un magma qui s'est form$\acute{e}$ dans la subduction pr$\grave{e}$s du continent. Il est aussi n$\acute{e}$ssaire d'examiner un soul$\grave{e}$vement qui est plus $\acute{e}$lev$\acute{e}$ qu' un mouvement ascendant de la surface de la mer $\grave{a}$ l'$\grave{e}$re quaternaire environ de l'$\hat{I}$le rocheuse de Baek malgr$\acute{e}$ que, selon nous, nous y trouvions une faille et une terrasse marine.

• Journal of Korean Theatre Studies Association
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• 제53호
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• pp.89-128
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• 2014

De notre temps, nous faisons face ${\grave{a}}$ un changement du $th{\hat{e}}atre$ dans son ensemble. Le $th{\acute{e}}atre$ contemporain tente de se $d{\acute{e}}marquer$ des autres formes artistiques, mais aussi des formes $litt{\acute{e}}raires$, lorsque la tendance est ${\grave{a}}$ la fusion des genres. Il existe ainsi de plus en plus de $th{\hat{e}}atre$ ${e}xp{\acute{e}}rimentaux$, $n{\acute{e}}s$ sous le nom de $th{\acute{e}}atre$ anthropologique, $th{\acute{e}}atre$ sociologique, $th{\acute{e}}atre$ ethnologique, $th{\acute{e}}atre$ ${\acute{e}}pist{\acute{e}}miologique$ ou $th{\acute{e}}{\hat{a}}tre$ interculturel. La $m{\acute{e}}thodologie$ doit elle s'adapter ${\grave{a}}$ cette tendance de fusion? Au lieu de trouver une $m{\acute{e}}thode$ d'anlyse de chaque "nouveaux genre" $n{\acute{e}}$ de la fusion, nous nous interrogeons sur la $m{\acute{e}}thodologie$ pour ${\acute{e}}tudier$ le $th{\hat{e}}atre$ dans son ensemble. Si une telle $m{\acute{e}}thodologie$ d'analyse existait, quelle serait la $diff{\acute{e}}rence$ avec la $m{\acute{e}}thodologie$ $d{\acute{e}}j{\grave{a}}$ existante? Et si elle n'existait pas, quelle serait la meilleure $m{\acute{e}}thodologie$ $adapt{\acute{e}}e$? Nous $consid{\acute{e}}rons$ la $m{\acute{e}}thode$ d'analyse de la didascalie comme nouvelle $m{\acute{e}}thodologie$ $adapt{\acute{e}}e$. En effet, la didascalie $conna{\hat{i}}t$ sans cesse des $m{\acute{e}}tamorphoses$ dans $l^{\prime}{\acute{e}}criture$. De nombreux $th{\acute{e}}oriciens$ ont $d{\acute{e}}velopp{\acute{e}}$ des $m{\acute{e}}thodes$ d'analyse afin de mieux comprendre les diverses formes de $th{\acute{e}}atre$ comtemporain et ses didascalies. Notre travail est de rassembler les ${\acute{e}}tudes$ des $diff{\acute{e}}rents$ $th{\acute{e}}oriciens$ et de les ordonner ; afin de proposer un outil d'analyse $adapt{\acute{e}}$ pour $l^{\prime}interpr{\acute{e}}tation$ des $pi{\grave{e}}ces$ du $th{\acute{e}}{\hat{a}}tre$ contemporain.

• Journal of the Korean Mathematical Society
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• 제32권3호
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• pp.615-623
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• 1995

Consider a function m defined in $R^n$ and the associated convolution operator T given by the Fourier transform $\hat{T} = m\hat{f}$.